Chamberlain Safety Gate SW470 User Manual
GL  
MODEL SW470  
MEDIUM DUTY SWING GATE OPERATOR  
MODEL SW490  
HEAVY DUTY SWING GATE OPERATOR  
INTENDED FOR PROFESSIONAL INSTALLATION ONLY.  
VISIT WWW.LIFTMASTER.COM TO LOCATE A PROFESSIONAL  
INSTALLING DEALER IN YOUR AREA.  
2 YEAR WARRANTY  
Serial # _______________________  
(located on electrical box cover)  
THIS MANUAL IS TO BE LEFT WITH THE PROPERTY OWNER.  
Installation Date_________________  
MODELS SW470 AND SW490 ARE FOR VEHICULAR PASSAGE GATES  
ONLY AND NOT INTENDED FOR PEDESTRIAN PASSAGE GATE USE.  
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O P E R A T O R D I M E N S I O N S A N D S P E C I F I C A T I O N S  
MODEL SW470  
24.25"  
(61.6 cm)  
20"  
• 1/2 HP Motor  
Maximum Gate Weight – 500 lbs. (226.8 kg)  
Maximum Gate Width – 12 ft. (3.7 m)  
(50.8 cm)  
10"  
(25.4 cm)  
6.81"  
(17.3 cm)  
13.63"  
(34.6 cm)  
14.25"  
(36.2 cm)  
13.38"  
(34 cm)  
13" (33 cm)  
MODEL SW490  
• 1/2 HP Motor  
30.24"  
Maximum Gate Weight – 750 lbs. (340.2 kg)  
Maximum Gate Width – 16 ft. (4.9 m)  
(76.8 cm)  
26.24"  
(66.7 cm)  
7.12"  
(18.1 cm)  
7.03"  
(17.9 cm)  
• 3/4 HP Motor  
Maximum Gate Weight – 900 lbs. (408.2 kg)  
Maximum Gate Width – 19 ft. (5.8 m)  
13.75"  
(35 cm)  
• 1 HP Motor  
Maximum Gate Weight – 1000 lbs. (453.6 kg)  
Maximum Gate Width – 22 ft. (6.7 m)  
22"  
(55.9 cm)  
18.5"  
(47 cm)  
17.63"  
(44.8 cm)  
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U L 3 2 5 M O D E L C L A S S I F I C A T I O N S  
The SW470 and SW490 are intended for use with vehicular swing gates. The opener can be used in  
Class I, Class II, Class III and Class IV applications.  
CLASS I – RESIDENTIAL VEHICULAR GATE OPERATOR  
A vehicular gate operator (or system) intended for use in a home of one-to four single family dwellings,  
or a garage or parking area associated therewith.  
CLASS II – COMMERCIAL/GENERAL ACCESS VEHICULAR GATE OPERATOR  
A vehicular gate operator (or system) intended for use in a commercial location or building such as a  
multi-family housing unit (five or more single family units) hotel, garage, retail store or other building  
servicing the general public.  
CLASS III – INDUSTRIAL/LIMITED ACCESS VEHICULAR GATE OPERATOR  
A vehicular gate operator (or system) intended for use in a industrial location or building such as a  
factory or loading dock area or other location not intended to service the general public.  
CLASS IV – RESTRICTED ACCESS VEHICULAR GATE OPERATOR  
A vehicular gate operator (or system) intended for use in a guarded industrial location or building such  
as an airport security area or other restricted access locations not servicing the general public, in which  
unauthorized access is prevented via supervision by security personnel.  
UL325 ENTRAPMENT PROTECTION REQUIREMENTS  
GATE OPERATOR ENTRAPMENT PROTECTION  
UL325 Slide Gate Operator Swing & Gate Barrier  
SAFETY ACCESSORY SELECTION  
All UL325 compliant LiftMaster gate operators will accept external  
entrapment protection devices to protect people from motorized  
gate systems. UL325 requires that the type of entrapment  
protection correctly matches each gate application. Below are the  
six types of entrapment protection systems recognized by UL325  
for use on this operator.  
Installation  
Class  
(Arm) Operator  
Primary  
Type  
Secondary  
Type  
Primary  
Type  
Secondary  
Type  
Class  
I & II  
B1, B2  
or D  
A, B1, B2,  
C or D  
A
A or C  
ENTRAPMENT PROTECTION TYPES  
A, B1,  
or C  
Type A: Inherent obstruction sensing system, self-contained  
within the operator. This system must sense and initiate  
the reverse of the gate within two seconds of contact  
with a solid object.  
Type B1:Connections provided for a non-contact device, such as a  
photoelectric eye can be used as a secondary protection.  
Type B2:Connections provided for a contact sensor. A contact  
device such as a gate edge can be used for secondary  
protection.  
Type C: Inherent adjustable clutch or pressure relief valve.  
Type D: Connections provided for a control requiring continuous  
pressure to operate the operator  
open and close.  
Type E: Built-in audio alarm. Examples  
include sirens, horns or buzzers.  
A, B1 or A, B1, D or  
D or E  
Class III  
Class IV  
E
B2  
A, B1, B2 A, B1, B2, A, B1, C or A, B1, C, D  
D or E  
or D  
D
or E  
The chart above illustrates the entrapment protection  
requirements for each of the four UL325 classes.  
In order to complete a proper installation you must satisfy the  
entrapment protection chart shown above. That means that  
the installation must have one primary means of entrapment  
protection and one independent secondary means of  
entrapment protection. Both primary and secondary  
entrapment protection methods must be designed, arranged  
or configured to protect against entrapments in both the open  
and close directions of gate travel.  
For Example: For a slide gate system that is installed on a  
single-family residence (UL325 Class I) you must provide the  
following: As your primary type of entrapment protection you  
must provide Type A- inherent (built into the operator)  
entrapment sensing and at least one of the following as your  
secondary entrapment protection: Type B1- Non-contact  
sensors such as photoelectric eyes, Type B2- Contact sensors  
such as gate edges or Type D- Constant pressure control.  
NOTE: UL requires that all installations must  
Moving Gate Can Cause  
have warning signs placed in plain view on  
Injury or Death  
both sides of the gate to warn pedestrians of  
the dangers of motorized gate systems.  
KEEP CLEAR! Gate may move at any  
time without prior warning.  
Do not let children operate the gate or  
play in the gate area.  
This entrance is for vehicles onl.y  
Pedestrians must use separate entrance  
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S U G G E S T E D S A F E T Y P R O T E C T I O N D E V I C E L O C A T I O N S  
SWING GATE SYSTEM  
Telephone  
Entry System  
STREET  
Photo eye for  
open cycle  
Run twisted wire*  
from loop to  
operator  
Seal Loops*  
Shadow  
Loop  
1-1/2" (37 mm)  
Loop Wire* Layer  
1/4" (6 mm) or larger  
depending on loop wire  
size  
Photo eye for  
close cycle  
4' (1.2 m)  
Typical  
COMPLEX  
OR  
PARKING LOT  
DUAL SWING GATE SYSTEM  
STREET  
Photo eye for  
open cycle  
Run twisted wire*  
from loop to  
operator  
Gate 2  
Seal Loops*  
1-1/2" (37 mm)  
Shadow  
Loop  
Gate 1  
Loop Wire* Layer  
1/4" (6 mm) or larger  
depending on loop wire  
size  
Photo eye for  
open cycle  
4' (1.2 m)  
Typical  
COMPLEX  
OR  
PARKING LOT  
Photo eye for  
close cycle  
* REFER TO LOOP MANUFACTURER’S INSTRUCTIONS FOR DETAILED INSTALLATION & LOOP WIRING INSTRUCTIONS.  
5
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S A F E T Y I N S T A L L A T I O N I N F O R M A T I O N  
1. Vehicular gate systems provide convenience and security. Gate systems are comprised of many component parts. The gate  
operator is only one component. Each gate system is specifically designed for an individual application.  
2. Gate operating system designers, installers and users must take into account the possible hazards associated with each individual  
application. Improperly designed, installed or maintained systems can create risks for the user as well as the bystander. Gate  
systems design and installation must reduce public exposure to potential hazards.  
3. A gate operator can create high levels of force in its function as a component part of a gate system. Therefore, safety features must  
be incorporated into every design. Specific safety features include:  
• Gate Edges  
• Screen Mesh  
• Guards for Exposed Rollers  
• Vertical Posts  
• Photoelectric Sensors  
• Instructional and Precautionary Signage  
4. Install the gate operator only when:  
a. The operator is appropriate for the construction and the usage class of the gate.  
b. All openings of a horizontal slide gate are guarded or screened from the bottom of the gate to a minimum of 4' (1.2 m) above  
the ground to prevent a 2 1/4" (6 cm) diameter sphere from passing through the openings anywhere in the gate, and in that  
portion of the adjacent fence that the gate covers in the open position.  
c. All exposed pinch points are eliminated or guarded, and guarding is supplied for exposed rollers.  
5. The operator is intended for installation only on gates used for vehicles. Pedestrians must be supplied with a separate access  
opening. The pedestrian access opening shall be designed to promote pedestrian usage. Locate the gate such that persons will not  
come in contact with the vehicular gate during the entire path of travel of the vehicular gate.  
6. The gate must be installed in a location so that enough clearance is supplied between the gate and adjacent structures when  
opening and closing to reduce the risk of entrapment. Swinging gates shall not open into public access areas.  
7. The gate must be properly installed and work freely in both directions prior to the installation of the gate operator.  
8
Controls intended for user activation must be located at least six feet (6') away from any moving part of the gate and where the  
user is prevented from reaching over, under, around or through the gate to operate the controls. Outdoor or easily accessible  
controls shall have a security feature to prevent unauthorized use.  
9. The Stop and/or Reset (if provided separately) must be located in the line-of-sight of the gate. Activation of the reset control shall  
not cause the operator to start.  
10. A minimum of two (2) WARNING SIGNS shall be installed, one on each side of the gate where easily visible.  
11. For a gate operator utilizing a non-contact sensor:  
a. Reference owner’s manual regarding placement of non-contact sensor for each type of application.  
b. Care shall be exercised to reduce the risk of nuisance tripping, such as when a vehicle trips the sensor while the gate is  
still moving.  
c. One or more non-contact sensors shall be located where the risk of entrapment or obstruction exists, such as the perimeter  
reachable by a moving gate or barrier.  
12. For a gate operator utilizing a contact sensor such as an edge sensor:  
a. One or more contact sensors shall be located where the risk of entrapment or obstruction exists, such as at the leading edge,  
trailing edge and post mounted both inside and outside of a vehicular horizontal slide gate.  
b. One or more contact sensors shall be located at the bottom edge of a vehicular vertical lift gate.  
c. A hard wired contact sensor shall be located and its wiring arranged so the communication between the sensor and the gate  
operator is not subject to mechanical damage.  
d. A wireless contact sensor such as the one that transmits radio frequency (RF) signals to the gate operator for entrapment  
protection functions shall be located where the transmission of the signals are not obstructed or impeded by building structures,  
natural landscaping or similar obstruction. A wireless contact sensor shall function under the intended end-use conditions.  
e. One or more contact sensors shall be located on the inside and outside leading edge of a swing gate. Additionally, if the bottom  
edge of a swing gate is greater than 6" (152 mm) above the ground at any point in its arc of travel, one or more contact sensors  
shall be located on the bottom edge.  
f. One or more contact sensors shall be located at the bottom edge of a vertical barrier (arm).  
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G A T E C O N S T R U C T I O N I N F O R M A T I O N  
Vehicular gates should be installed in accordance with ASTM F2200: Standard Specification for Automated Vehicular Gate Construction.  
For a copy, contact ASTM directly at 610-832-9585 or www.astm.org.  
1. GENERAL REQUIREMENTS  
1.1 Gates shall be constructed in accordance with the provisions  
given for the appropriate gate type listed, refer to ASTM  
F2200 for additional gate types.  
1.2 Gates shall be designed, constructed and installed to not fall  
over more than 45 degrees from the vertical plane, when a  
gate is detached from the supporting hardware.  
3.1.4 Positive stops shall be required to limit travel to the  
designed fully open and fully closed positions. These stops  
shall be installed at either the top of the gate, or at the  
bottom of the gate where such stops shall horizontally or  
vertically project no more than is required to perform their  
intended function.  
3.1.5 All gates shall be designed with sufficient lateral stability to  
assure that the gate will enter a receiver guide, refer to  
ASTM F2200 for panel types.  
1.3 Gates shall have smooth bottom edges, with vertical bottom  
edged protrusions not exceeding 0.50 inches (12.7 mm)  
when other than the exceptions listed in ASTM F2200.  
3.2 The following provisions shall apply to Class IV vehicular  
horizontal slide gates:  
3.2.1 All weight bearing exposed rollers 8 feet (2.44 m), or less,  
above grade shall be guarded or covered.  
3.2.2 Positive stops shall be required to limit travel to the  
designed fully open and fully closed positions. These stops  
shall be installed at either the top of the gate, or at the  
bottom of the gate where such stops shall horizontally or  
vertically project no more than is required to perform their  
intended function.  
1.4 The minimum height for barbed tape shall not be less than 8  
feet (2.44 m) above grade and for barbed wire shall not be  
less than 6 feet (1.83 m) above grade.  
1.5 An existing gate latch shall be disabled when a manually  
operated gate is retrofitted with a powered gate operator.  
1.6 A gate latch shall not be installed on an automatically  
operated gate.  
1.7 Protrusions shall not be permitted on any gate, refer to ASTM  
F2200 for Exceptions.  
1.8 Gates shall be designed, constructed and installed such that  
their movement shall not be initiated by gravity when an  
automatic operator is disconnected.  
1.9 A pedestrian gate shall not be incorporated into a vehicular  
gate panel or that portion of the adjacent fence that the gate  
covers in the open position.  
2. SPECIFIC APPLICATIONS  
2.1 Any non-automated gate that is to be automated shall be  
upgraded to conform to the provisions of this specification.  
4.  
4.1  
VEHICULAR HORIZONTAL SWING GATES  
The following provisions shall apply to Class 1, Class II  
and Class III vehicular horizontal swing gates:  
2.2 This specification shall not apply to gates generally used for  
pedestrian access and to vehicular gates not to be  
automated.  
2.3 Any existing automated gate, when the operator requires  
replacement, shall be upgraded to conform to the provisions  
of this specification in effect at that time.  
4.1.1  
Gates shall be designed, constructed and installed so as  
not to create an entrapment area between the gate and  
the supporting structure or other fixed object when the  
gate moves toward the fully open position, subject to the  
provisions in the 4.1.1.1 and 4.1.1.2.  
3.  
VEHICULAR HORIZONTAL SLIDE GATES  
3.1 The following provisions shall apply to Class I, Class II and  
4.1.1.1 The width of an object (such as a wall, pillar or column)  
covered by a swing gate when in the open position shall  
not exceed 4 inches (102 mm), measured from the  
centerline of the pivot point of the gate, refer to ASTM  
F2200 for exception.  
4.1.1.2 Except for the zone specified in Section 4.1.1.1, the  
distance between a fixed object such as a wall, pillar or  
column, and a swing gate when in the open position shall  
not be less than 16 inches (406 mm), refer to ASTM  
F2200 for exception.  
Class III vehicular horizontal slide gates:  
3.1.1 All weight bearing exposed rollers 8 feet (2.44 m), or less,  
above grade shall be guarded or covered.  
3.1.2 All openings located between 48 inches (1.22 m) and 72  
inches (1.83 m) above grade shall be designed, guarded or  
screened to prevent a 4 inch  
(102 mm) diameter sphere from passing through the  
openings anywhere in the gate, and in that portion of the  
adjacent fence that covers in the open position.  
4.2  
Class IV vehicular horizontal swing gates shall be  
designed, constructed and installed in accordance with  
security related parameters specific to the application in  
question.  
3.1.3 A gap, measured in the horizontal plane parallel to the  
roadway, between a fixed stationary object nearest the  
roadway, (such as a gate support post) and the gate frame  
when the gate is in either the fully open position or the  
fully closed position, shall not exceed 2-1/4 inches  
(57 mm), refer to ASTM F2200 for Exception.  
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SAFETY PRECAUTIONS FOR SWING AND  
ORNAMENTAL "GRILL TYPE GATES"  
WARNING  
To prevent SERIOUS INJURY or DEATH from a moving gate:  
• Entrapment protection devices MUST be installed to protect  
anyone who may come near a moving gate.  
• Locate entrapment protection devices to protect in BOTH the  
open and close gate cycles.  
• Locate entrapment protection devices to protect between  
moving gate and RIGID objects, such as posts.  
• A swinging gate shall NOT open into public access ways.  
WARNING SIGN PLACEMENT  
WARNING  
To prevent SERIOUS INJURY or DEATH from a moving gate:  
• Install warning signs on EACH side of gate in PLAIN VIEW.  
• Permanently secure each warning sign in a suitable manner  
using fastening holes.  
Moving Gate Can Cause  
Injury or Death  
KEEP CLEAR! Gate may move at any  
time without prior warning.  
Do not let children operate the gate or  
play in the gate area.  
This entrance is for vehicles only  
Pedestrians must use separate entrance  
8
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I N S T A L L A T I O N  
POST MOUNTING (SW470)  
Figure 1  
1. Locate and anchor two posts made of 3" (7.6 cm) outer  
diameter heavy walled pipe. Posts should be parallel and  
square to the gate.  
Fence  
IMPORTANT NOTE: The distance between mounting posts and  
the relative location of the operator to the gate and fence is  
critical.  
30"  
9.5"  
3" O.D. pipe  
(2 req’d.)  
23"  
2. Locate electrical conduit, as required, prior to pouring concrete.  
Concrete pad  
3. Set mounting post and electrical conduit in place (Figure 2).  
Knockouts for 3" pipe clamps (not supplied) are provided in the  
operator.  
16 x 32 minimum  
Operator  
Parallel Mount  
Fence  
20"  
18.5"  
3" O.D. pipe  
(2 req’d.)  
Concrete pad  
16 x 32 minimum  
23"  
Figure 2  
Operator  
Perpendicular Mount  
3" U-bolt  
(4 required)  
Power and control wiring should  
be run in separate conduit  
9
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I N S T A L L A T I O N  
Figure 1  
PAD MOUNTING (SW470)  
1. Layout the concrete pad (Figure 1).  
Hinge Pin  
9-3/4"  
Fence  
22-1/2"  
IMPORTANT NOTE: The relative location of the operator to the  
fence and the gate is critical. Be sure that the measurements for  
operator mounting are taken from the centerline of the fence and  
of the gate hinge.  
2. Locate electrical conduit, as required, prior to pouring concrete.  
3. Pour concrete pad.  
c
1/2" Redhead  
(4 required.)  
24"  
8"  
Concrete pad 18"x34" min.  
4. Bolt the (2) pad mount brackets to the bottom of the operator  
with the hardware provided.  
5. Secure the operator to the concrete pad. It is very important  
that the operator be level and square to the gate.  
Operator  
Parallel Mount  
Centerline  
Gate  
6"  
8"  
8"16"1/2" Redhead  
(4 required)  
18-3/4"  
22-1/2"  
Concrete pad  
18"x34" min.  
Profile of  
Operator  
Figure 2  
SW470  
Perpendicular  
Perpendicular Mount  
Using suitable hardware secure  
operator to L-bolts  
1/2" red head bolts or  
anchors (4 required)  
Power and control wiring should be  
run in separate conduit  
Concrete Pad  
2" to 4" above grade  
Depth required by  
local codes or below  
frost line  
10  
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I N S T A L L A T I O N  
Figure 1  
PAD MOUNTING (SW490)  
1. Measure the gate length and select appropriate “P” dimension  
from the gate installation table.  
2. Layout the concrete pad as detailed in Figure 1.  
Gate  
Fence  
IMPORTANT NOTE: The relative location of the operator to the  
fence and the gate is critical. Be sure that the measurements for  
operator mounting are taken from the centerline of the fence and  
of the gate hinge.  
P
1/2" Redhead  
(4 Required)  
5"  
3. Locate electrical conduit, as required, prior to pouring concrete.  
4. Pour concrete pad.  
5. Bolt the (2) pad mount brackets to the bottom of the operator  
with the hardware provided (Install the operator so that the  
output shaft is on the side closest to the gate).  
Output  
Shaft  
8"  
6. Secure the operator to the pad. It is very important that the  
operator be level and square to the gate.  
Operator  
28"  
Concrete Pad  
18" x 34" min.  
SW490 GATE OPERATOR INSTALLATION TABLE  
GATE LENGTH (FEET)  
8-9 10-11 12-13 14-15 16-17 18-19 20-21 22  
P DIMENSION IN INCHES  
21.9 25.3 28.8 32.3 35.7 39.2 42.7 46.1  
Figure 2  
Using suitable hardware secure  
operator to L-bolts  
1/2" red head bolts or  
anchors (4 required)  
Power and control wiring should be  
run in separate conduit  
Concrete Pad  
2" to 4" above grade  
Depth required by  
local codes or below  
frost line  
11  
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I N S T A L L A T I O N  
CONTROL ARM ASSEMBLY (SW470)  
CAUTION  
If the arm stop is installed incorrectly, the gate will be  
prevented from opening and damage to the operator may  
result!  
1. Set the control arm stop on the operator in the positions  
appropriate for the installation (Figure 1).  
2. Install the arm channel to the hub assembly to the operator  
output shaft.  
3. Secure the arm channel to arm hub with 1/4-20 black plastic  
knobs provided (Hub is factory installed - Figure 2).  
Close Stops  
Figure 1  
4. Assemble extension arm to control arm. Be sure to keep the  
extension arm with spot-faced side up. Use the holes that are  
appropriate for desired degree of gate opening. The extension  
arm should swivel easily on pivot screws when the nuts are  
tightened. Attach the other end of the actuator arm to the gate  
brackets (Figure 3).  
Left hand  
installation  
Right hand  
installation  
SW470 Parallel to Fence  
Close Stops  
Figure 2  
Black Plastic  
Knob  
Arm Channel  
“L.H.”  
“R.H.”  
SW470 Perpendicular to Fence  
Figure 3  
Housing  
Eccentric stop during  
installation of gate  
plate  
Hinge Pin  
36"  
Hub  
Assembly  
Eccentric stop (operating position  
after adjustment). Arm must  
swing approximately 2 degrees  
past straight position (See detail)  
Gate  
Plate  
Installation Detail  
Crank Extension  
Extension arm  
installation detail  
NOTE: Dotted line indicates  
straight arm position  
GATE BRACKET INSTALLATION (SW470)  
1. Install gate bracket (supplied) or install an angle (2" x 2" x 1/4"  
by others) horizontally on gate, at the same height as the top  
surface of the control arm extension (see figure to the right).  
2. Adjust the eccentric stop as shown so that the wide area of the  
eccentric stop is against the arm. Be sure that the control arm  
and actuator are in a straight line. Install the gate bracket and if  
required install an angle (for SW490 2" x 2" x 1/4" by others) at  
the appropriate point on the gate in reference to gate hinge pin.  
Model SW470  
Top of gate bracket should be mounted 1/2"  
higher than top of arm channel  
Arm Channel  
NOTE: As an alternative, (2) 3/8-16 bolts and a nut plate are  
provided. Adjust arm length and then rotate the eccentric stop  
180 degrees so that the small thickness is against the arm. This  
will provide the necessary deflection in the arm assembly to lock  
the gate.  
Gate  
Bracket  
Gate  
12  
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I N S T A L L A T I O N  
CONTROL ARM ASSEMBLY (SW490)  
1. Set the control arm’s close stop on the operator so that its  
position corresponds with the handling of the installation  
(Figure 1).  
Figure 1  
Close Stops  
2. Remove the open stop, as it is not to be used in this  
application. Use any existing hardware necessary to seal the  
open stop’s hole in the operator’s cover.  
3. Measure the length of the gate panel and select the appropriate  
extension arm (x) and control arm (Y) dimensions from the  
gate installation table.  
Left hand  
installation  
Right hand  
installation  
4. Install the control arm hub assembly to the operator’s output  
shaft. Make sure that the key is properly inserted into the hub  
assemblies keyway. Lock the key in place with using the set  
screw provided in the hub.  
5. Attach control arm extension to control arm hub assembly by  
bolting or welding the two pieces together to achieve the  
proper control arm dimension (Y).  
6. Determine the proper location of the gate bracket by measuring  
the gate panel’s length and referring to the gate installation  
table (Dimension B) on the next page. Install the supplied gate  
bracket or install your own gate bracket (recommended  
2" x 2" x 1/4" angle) horizontally on the gate and at the same  
height as the top surface of the control arm extension. Secure  
the gate bracket to the gate by either welding or bolting the  
bracket to the gate.  
SW490 Parallel to Fence  
Figure 2  
3/4"-10 x 3 Hex Head Bolt  
3/4" Flat Washer  
3/4" Bushing  
Extension Arm Holder 3/4"  
Gate bracket or  
extension arm  
3/4" Flat Washer  
3/4" Flat Washer  
Split Lock Washer 3/4"  
7. Assemble one extension arm holder to the gate bracket using  
supplied hardware (Figure 2).  
3/4"-10 Hex Nut  
8. Assemble the other extension arm holder to the control arm  
extension using the supplied pivot pin assembly and cotter pin  
(Figure 3).  
Figure 3  
Pivot pin assembly  
9. Measure and cut pipe (not provided) and position the pipe into  
the extension arm holders to achieve the proper extension arm  
dimension (X). Insert the hex head set screws in each  
extension arm holder in order to hold pipe firmly. Do not  
tighten until testing and all final adjustment have been  
completed (Figure 4).  
Extension arm holder  
Cotter Pin  
Extension arm  
Figure 4  
MODEL SW490  
Bottom of angle and top of control  
arm extension should be level  
Control arm
extension  
2"x2"x1/4"  
angle  
(by others)  
gate  
13  
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I N S T A L L A T I O N  
CONTROL ARM ASSEMBLY (SW490) continued  
Gate Length  
Gate Hinge  
B
A
4.5"  
Open gate position  
34"  
Closed  
gate  
position  
90º  
2"  
Pipe  
Gate Bracket  
Closed gate stop  
D
Control arm hub  
assembly  
Extension  
Arm  
Extension  
Arm Holder  
X
Control arm  
extension  
SW490 Gate Installation Table  
Y
Gate Center Line  
Gate Length (Feet)  
8-9  
10-11 12-13 14-15 16-17 18-19 20-21  
22  
4.5  
Output Shaft  
A Dimension (Inches)  
B Dimension (Inches)  
C Dimension (Inches)  
D Dimension (Inches)  
X Dimension (Inches)  
Y Dimension (Inches)  
4.5  
24  
4.5  
30  
4.5  
36  
4.5  
42  
4.5  
48  
4.5  
54  
4.5  
60  
66  
13  
13  
13  
13  
13  
13  
13  
13  
25.9  
*25.7  
29.3  
*29  
32.8  
36.3  
39.7  
43.2  
46.7  
*50  
34.2  
50.1  
*54.6  
36.6  
*32.8 *36.9 *41.2 *45.6  
29.3 31.8  
**17 **20.6 **23.8 26.6  
All table dimensions are measured from pivot to pivot.  
* Cut/add excess pipe for desired extension arm pivot to pivot dimension.  
** Cut excess control arm extension and/or control arm hub assembly for desired pivot to  
pivot dimension. Weld or bolt extension arm to arm assembly.  
C
13"  
Figure 1  
MANUAL DISCONNECT  
Black Plastic  
Knob  
MODEL SW470  
Arm Channel  
1. Remove the (2) black knobs securing the control arm to the  
operator (Figure 1).  
2. Swing arm assembly off to the side. Gate should swing freely.  
MODEL SW490  
1. Remove hitch pin and pivot pin securing control arm to arm  
assembly (Figure 2).  
2. Swing arm assembly off to the side. Gate should swing freely.  
Housing  
Hub  
Assembly  
Figure 2  
Pivot Pin Assembly  
Extension Arm Holder  
Cotter Pin  
Extension Arm  
14  
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W I R I N G  
WARNING  
To reduce the risk of SEVERE INJURY or DEATH:  
• DO NOT install any wiring or attempt to run the operator  
without consulting the wiring diagram. We recommend that  
you Install an optional reversing edge BEFORE proceeding  
with the control station installation.  
• ANY maintenance to the operator or in the area near the  
operator MUST not be performed until disconnecting the  
electrical power and locking-out the power via the operator  
power switch. Upon completion of maintenance the area  
MUST be cleared and secured, at that time the unit may be  
returned to service.  
• ALL power wiring should be on a dedicated circuit and well  
protected. The location of the power disconnect should be  
visible and clearly labeled.  
• Disconnecting power at the fuse box BEFORE proceeding.  
Operator MUST be properly grounded and connected in  
accordance with local electrical codes. NOTE: The operator  
should be on a separate fused line of adequate capacity.  
• ALL electrical connections MUST be made by a qualified  
individual.  
• ALL power and control wiring MUST be run in separate  
conduit.  
• BEFORE installing power wiring or control stations be sure to  
follow all specifications and warnings described below. Failure  
to do so may result in SEVERE INJURY to persons and/or  
damage to operator.  
POWER WIRING INSTALLATION  
Wiring Specifications (STRANDED COPPER WIRE)  
On a Dual Gate System, each unit must be installed on ITS OWN separate circuit.  
SINGLE PHASE  
THREE PHASE  
460 Vac  
115 Vac  
230 Vac  
230 Vac  
575 Vac  
WIRE GAUGE 6  
• 1/2 HP Motor-------  
• 3/4 HP Motor-------  
• 1 HP Motor ---------  
425 ft. (129.5 m) 1845 ft. (562.4 m)  
291 ft. (88.7 m) 1107 ft. (337.4 m)  
213 ft. (64.9 m) 852 ft. (259.7 m)  
2557 ft. (779.4 m) 12789 ft. (3898.1 m) 15987 ft. (4872.8 m)  
1827 ft. (556.9 m) 6394 ft. (1948.9 m) 10657 ft. (3248.3 m)  
1278 ft. (389.5 m) 5115 ft. (1559.1 m) 7993 ft. (2436.3 m)  
WIRE GAUGE 8  
• 1/2 HP Motor-------  
• 3/4 HP Motor-------  
• 1 HP Motor ---------  
269 ft. (82 m)  
183 ft. (55.8 m) 699 ft. (213.1 m)  
134 ft. (40.8 m) 537 ft. (163.7 m)  
1165 ft. (355.1 m)  
1614 ft. (492 m) 8072 ft. (2460.4 m) 10089 ft. (3075.1 m)  
1152 ft. (351.1 m) 4035 ft. (1229.9 m) 6726 ft. (2050.1 m)  
807 ft. (246 m)  
3228 ft. (983.9 m)  
5044 ft. (1537.4 m)  
WIRE GAUGE 10  
• 1/2 HP Motor-------  
• 3/4 HP Motor-------  
• 1 HP Motor ---------  
168 ft. (51.2 m) 730 ft. (222.5 m)  
115 ft. (35.1 m) 438 ft. (133.5 m)  
1012 ft. (308.5 m) 5064 ft. (1543.5 m) 6330 ft. (1929.4 m)  
723 ft. (220.4 m) 2532 ft. (771.8 m)  
506 ft. (154.2 m) 2025 ft. (617.2 m)  
4220 ft. (1286.3 m)  
3165 ft. (964.7 m)  
84 ft. (25.6 m)  
337 ft. (102.7 m)  
WIRE GAUGE 12  
• 1/2 HP Motor-------  
• 3/4 HP Motor-------  
• 1 HP Motor ---------  
105 ft. (32 m)  
72 ft. (22 m)  
53 ft. (16.2 m)  
458 ft. (139.6 m)  
274 ft. (83.5 m)  
211 ft. (64.3 m)  
634 ft. (193.2 m) 3171 ft. (966.5 m)  
503 ft. (153.3 m) 1585 ft. (483.1 m)  
3964 ft. (1208.2 m)  
2643 ft. (805.6 m)  
1982 ft. (604.1 m)  
316 ft. (96.3 m)  
1269 ft. (386.8 m)  
NOTE: Calculated using NEC guidelines. Local codes and conditions must be reviewed for suitability of wire installation. All power  
wiring should be dedicated and protected. Location of primary power disconnect should be labeled.  
15  
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W I R I N G  
ON/OFF SWITCH POWER WIRING  
NOTE: Before running power wiring refer to wiring specifications  
on page 15 for correct wire gauges.  
Secure all electrical power connections inside the disconnect  
switch electrical box. Refer to electrical wiring diagrams on pages  
31-33.  
IMPORTANT: On three phase operators, power connections must  
be properly phased. If phased incorrectly, the gate operator will  
run reversed. To correct this situation, shut off power at main  
power source and at the operator’s electrical disconnect switch.  
Then reverse any two of the three power leads.  
SINGLE PHASE  
All single phase operators will have the following:  
ON/OFF Switch  
Cover  
115V  
208/230V  
• L1 (NEUTRAL), WHITE  
• L2 (HOT), BLACK  
• GROUND, GREEN  
• L1 (HOT), BLACK  
• L2 (HOT), BLACK  
• GROUND, GREEN  
Wire Nut Connections  
(See Instructions)  
THREE PHASE  
All three phase operators will have the following:  
Power Wiring Conduit  
• L1 BLACK  
• L3 BLACK  
• L2 BLACK  
• GROUND, GREEN  
STOP/RESET BUTTON CONTROL WIRING (REQUIRED)  
1. This control will function as a Stop/Reset command and is to  
be wired within line of sight of the gate. The operator will not  
function unless this circuit is completed.  
Control Conduit  
2. Wire control station to terminals 3 and 5 in the control box on  
the operator.  
J1 CONNECTOR  
STOP/RESET  
Button  
STOP/RESET BUTTON WIRING  
1
2
3
4
5
6
7
8
9
10  
STOP/RESET  
NOTE: For additional control station options refer to pages  
21 and 22.  
16  
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A D J U S T M E N T  
PROGRAMMING THE RADIO RECEIVER  
SET SECURITY MODE  
WARNING  
The Universal Receiver can be used with up to 15 315 MHz rolling  
code remote controls or PINs in HIGH security mode. Alternately,  
it can be used with up to 31 of any type 315 MHz remote control  
in NORMAL security mode, including any combination of rolling  
code, billion code, or dip switch remotes.  
The jumper must be set at the HIGH position for the receiver to  
operate in HIGH security mode. It must be set at NORMAL  
position to operate at the NORMAL mode (Figure 1).  
When changing from NORMAL to HIGH security mode, any  
previous remote control codes must be erased. Repeat Steps 2  
and 3 in the Programming Section below to reprogram the  
receiver for each remote control in use.  
To prevent possible SERIOUS INJURY or DEATH from  
electrocution:  
• Be sure power is not connected BEFORE installing the  
receiver.  
To prevent possible SERIOUS INJURY or DEATH from a  
moving gate or garage door:  
• ALWAYS keep remote controls out of reach of children.  
NEVER permit children to operate, or play with remote  
control transmitters.  
• Activate gate or door ONLY when it can be seen clearly, is  
properly adjusted, and there are no obstructions to door  
travel.  
• ALWAYS keep gate or garage door in sight until completely  
closed. NEVER permit anyone to cross path of moving gate  
or door.  
The receiver is factory set at HIGH.  
WARNING  
To prevent possible SERIOUS INJURY or DEATH, the use of  
CONSTANT OPERATION on residential openers is  
PROHIBITED.  
NOTICE: To comply with FCC and or Industry Canada (IC) rules, adjustment or modifications of  
this receiver and/or transmitter are prohibited, except for changing the code setting or replacing  
the battery. THERE ARE NO OTHER USER SERVICEABLE PARTS.  
Tested to Comply with FCC Standards FOR HOME OR OFFICE USE. Operation is subject to the  
following two conditions: (1) this device may not cause harmful interference, and (2) this device  
must accept any interference received, including interference that may cause undesired operation.  
Figure 1  
Security Mode  
Terminals  
Security Mode  
Terminals  
Jumper  
Jumper  
SET OUTPUT DURATION  
For commercial applications, the receiver can be set for either  
constant or momentary closure on the output contacts. Use of  
constant closure is prohibited on residential garage door openers  
because it overrides the safety reversal devices.  
With the jumper in the “M” (Momentary) position, the contacts  
will close for 1/4 second regardless of the length of radio  
transmission. With the jumper in “C” (Constant) position, the  
contacts will stay closed as long as the radio continues  
transmitting (Figure 2).  
HIGH  
SECURITY MODE  
NORMAL  
SECURITY MODE  
Figure 2  
The receiver is factory set at M.  
MOMENTARY  
OPERATION  
CONSTANT  
OPERATION  
Jumper  
Jumper  
Output  
Duration  
Terminals  
Output  
Duration  
Terminals  
PROGRAMMING THE REMOTE TO THE RECEIVER  
1. Pry open the front panel of receiver case with a coin or a  
screwdriver. Re-connect power to opener (Figure 3).  
2. Press and release the “learn” button on the receiver. The learn  
indicator light will glow steadily for 30 seconds.  
3. Within 30 seconds, press and hold the button on the hand-held  
remote that you wish to operate your garage door.  
The opener will now operate when the push button on either the  
receiver or the remote control is pressed.  
Repeat Steps 2 and 3 for each remote control that will be used to  
operate the garage door opener.  
Figure 3  
OPENING RECEIVER  
Indicator Light  
Learn Button  
OPEN RECEIVER  
Connect  
Antenna  
To erase all remote control codes:  
Output Duration  
Terminals  
C
P2  
M
Press and hold the “learn” button on the receiver panel until the  
indicator light turns off (about 6 seconds). All remote control  
codes are now erased. Then follow the steps above to reprogram  
each remote control.  
Security Mode  
24V  
12V  
Power Supply Jumper  
17  
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A D J U S T M E N T  
LIMIT SWITCH ADJUSTMENT  
NOTE: For limit location and configuration refer to Figure 1.  
CAUTION  
1. Before turning on power, disconnect extension arm from  
gate bracket so gate is no longer connected to operator.  
Push manual release pin(s) up through the control arm, slide  
clevis pin in place and secure with a cotter pin.  
2. The (3) collars are held to shaft by set screws. The collars  
should now be loose on the shaft. If not, loosen all set  
screws until collars are moving freely on shaft.  
When following limit switch adjustment procedure, the motor  
belt will turn and the control arm will move during some  
steps. Keep hands and tools out of operator and away from  
arm and drive shaft unless power is off or SERIOUS INJURY  
may occur.  
TO ADJUST CLOSE LIMIT SWITCH  
Limit Switch  
3. Turn on electrical power.  
Drive Shaft  
4. Press CLOSE button (if installed) or connect terminals  
4 & 5 on J1 terminal strip to cause the gate to close. The  
control arm should move in the close direction.  
5. When control arm is pointed in approximate direction of gate  
bracket (on fully closed gate) press STOP button or release  
terminals to stop control arm.  
Set Screw  
Aux switch (optional)  
Limit Switch “A”  
Limit Switch “B”  
Limit Cam  
NOTE: If control arm does not move far enough to point in proper  
direction, the close limit switch has been prematurely actuated.  
Turn off power, loosen set screw on close limit cam and rotate  
nut away from close limit switch. Repeat steps 3 and 4 until  
control arm is pointed in correct direction.  
6. Turn off power. Be sure close limit cam is freely turning.  
Rotate cam in close direction. Stop when cam just clicks  
close limit switch. Tighten set screw.  
7. Reconnect gate bracket to extension arm. If arm has moved  
too far in close direction to allow connection of gate bracket  
turn off power, connect terminals 5 & 7 to rotate arm in  
opposite direction, and press STOP button when arm is in  
desired position.  
LIMIT DIRECTION  
DIRECTION OF  
GATE TO OPEN  
OPEN  
LIMIT  
CLOSE  
LIMIT  
RIGHT  
(Factory Default)  
A
B
LEFT  
B
A
TO ADJUST OPEN LIMIT SWITCH  
8. Turn on power. Press OPEN button (if installed) or connect  
terminals 5 & 7 on J1 terminal strip. Gate should open. If  
gate does not open the open limit cam may be already  
actuating open limit switch or an improper electrical  
connection may have been made. Turn off power, inspect,  
correct and repeat this step.  
9. When gate reaches desired fully open position press STOP  
button or release terminals. Turn off power. Limit cam  
should turn freely. Rotate cam in open direction. Stop when  
cam just clicks the open limit switch. Tighten set screw.  
10. Fine tune both switch settings by using J1 terminals 4 & 5  
(to CLOSE) of 5 & 7 (to OPEN) and the factory supplied  
STOP button to move gate and rotating limit collars slightly  
to alter gate travel. Rotate cam away from limit switch to  
increase travel, toward switch to decrease travel.  
18  
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A D J U S T M E N T  
RPM SENSOR (HALL EFFECT) ADJUSTMENT  
NOTE: Normally the RPM sensor (hall effect) does not need  
adjustment, but may go out of alignment due to shipping  
vibration or rough handling.  
WARNING  
To reduce the risk of SEVERE INJURY or DEATH:  
• Disconnect power BEFORE performing ANY adjustments.  
These operators use an internal entrapment protector system.  
This system consists of the control board, magnet, and RPM  
sensor. It may become necessary to adjust the sensor for correct  
alignment. To do so, please perform the following steps:  
1. Loosen the two screws holding the hall bracket to the frame.  
2. Adjust the bracket so that the sensor is:  
a. Parallel with the pulley.  
b. .020" (.051 cm) away from the pulley's magnet. Use a  
feeler gauge to measure the distance.  
3. Tighten screws to secure assembly.  
4. Manually rotate pulley to ensure that each magnet clears the  
sensor board.  
If a magnet does not clear the board, re-adjust the RPM  
(hall effect) assembly accordingly.  
Pulley  
Magnet  
Mounting  
Screw (2)  
MODEL SW470  
Hall Effect  
Bracket  
Pulley  
Hall Effect Cable  
Mounting  
Screw (2)  
MODEL SW490  
Pulley  
Magnet  
Pulley  
Mounting  
Bracket  
Hall Effect Cable  
Hall Effect  
Magnet  
19  
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A D J U S T M E N T  
SEQUENCED ACCESS MANAGEMENT SYSTEM (SAMS)  
3. Once the barrier is open the vehicle may pass through the SAM  
system. At this point you have two options in how you would  
like to initiate the SAM systems closure. You may chose to:  
The Sequenced Access Management System or SAMS allows the  
customer more control when managing vehicular entrances to  
areas such as apartment complexes, businesses and gated  
communities. The basic concept of the system is that traffic is  
controlled by two gates installed in tandem, a fast moving gate  
such as a barrier gate operator and a slower moving more secure  
or ornamental gate such as a single or pair of slide/swing gate  
operator. The design of this gate system balances the demands of  
speed during high traffic periods with security during low traffic  
periods. Barrier gates typically have the fastest open times of the  
many gate operator types and the slide or swing gates allow you  
to effectively seal off the perimeter of the complex you are  
planning to secure.  
a. Use a timer to close system to automatically close the  
barrier gate after a preset amount of time or  
b. Use a loop system to close the barrier gate after the vehicle  
has passed through the SAM system.  
4. Once the barrier gate is closed the slide or swing gate will  
activate its internal timer to close and begin closing.  
5. If another authorized vehicle accesses the SAM system before  
the slide or swing begins to close the barrier will open and  
allow the vehicle to pass through the SAM system.  
6. If another authorized vehicle accesses the SAM system during  
the slide or swing gates closing cycle the SAM system will  
reopen the slide or swing gate. Once the slide or swing gate  
reaches the open position the barrier will then open to allow  
the vehicle to pass through the SAM system.  
7. If no other authorized vehicles access the SAM system the  
swing or slide gate will close followed by the barrier.  
NOTE: Connect all entry devices to the slide or swing gate. If  
using a device, such as a 7-day timer, to latch the slide or swing  
gate open during high traffic times, connect the device’s N/O relay  
output to the control board’s Interrupt Loop input. Once the  
device activates the Interrupt Loop input, the next vehicle to  
access the SAMS system will lock the gate in the open position  
until the device deactivates. When the device deactivates, the  
timer to close will automatically close and secure the gate.  
SAMS WIRING  
SAMS OPERATION  
1. Install conduit between the BG770 and the SW420 for SAMS  
control wiring.  
2. Run a 4-conductor cable in the conduit between the BG770  
SW420.  
3. Locate the SAMS relay terminals (J5) on the control board in  
the SW420 and locate the auxiliary limit switch in the BG770.  
1. When an authorized vehicle accesses the gate system, the SAM  
system responds by first opening the gate farthest from the  
vehicle, the swing or slide gate.  
2. Once the swing or slide gate is open, the barrier gate begins its  
open cycle.  
4. Attach a wire from the SAMS relay terminal (J5) on the control  
board to terminal 1 on the BG770 terminal strip.  
5. Attach a wire from the SAMS relay terminal (J5) on the control  
board to terminal 3 on the BG770 barrier gates terminal strip.  
TERMINAL BLOCK  
INTERRUPT LOOP INPUT  
TB5  
BG770 BARRIER GATE  
AUXILIARY LIMIT SWITCH  
N/0  
6. Attach a wire from terminal J1-5 on the control board to the  
common (COM) on the auxiliary limit switch in the barrier gate.  
7. Attach a wire from terminal J1-8 on the control board to the  
normally open (NO) on the auxiliary limit switch.  
COM  
TB8  
SAMS RELAY AT J5  
N/0  
TERMINAL STRIP  
1 (OPEN)  
COM  
3 (COMMON)  
8. Test for correct functionality of the SAM system.  
TRAFFIC  
STREET  
Master  
SAMS Conduit  
Second  
COMPLEX  
OR  
PARKING LOT  
20  
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A D J U S T M E N T  
ACCESSORY WIRING  
All inputs are normally open and momentary, except the stop  
(N.C.). The following instructions are based upon UL325, and  
include recommendations for significant increase in safety.  
We strongly recommend that you follow the UL guidelines  
presented throughout the manual. Refer to instructions shipped  
with optional control devices for mounting, wiring, programming  
and adjustment.  
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16  
J1 Terminal Block  
24 Vac Accessory Power  
Can be found at terminals R1 and R2 located on radio terminal  
block.  
Control Board  
R1  
R2  
R3  
R4  
24 Vac  
J1 Terminals 1 & 5 - Residential Radio (single button) Input  
ONE BUTTON WIRING  
These terminals are intended for use with a radio receiver in a  
residential application or as a single button control. This allows  
the user to open the gate by activating the remote control when  
the gate is closed or between limits. This input also gives the user  
the ability to close the gate by activating the remote control when  
the gate is on the open limit.  
1
2
3
4
5
6
7
8
9
10  
SHADOW LOOP INPUT  
J1 Terminals 2 & 5 - Shadow Loop Input  
1
2
3
4
5
6
7
8
9
10  
These terminals are intended for use with a loop detector and is  
primarily used on swing gate operators. This input protects cars  
by preventing the gate from moving off of the open or close limit  
when the shadow loop input is active.  
SOFT OPEN  
J1 Terminals 6 & 5 - Soft Open  
1
2
3
4
5
6
7
8
9
10  
These terminals are intended for use as a general open control.  
Accessories that may be wired to this input include: Telephone  
Entry Systems, Radio Receiver (Commercial Applications), Exit  
Loop Detector, Keypads, 7-Day Timer.  
NOTE: Will not override a double entrapment (signalled by the  
gate stopped and entrapment alarm on).  
3
6
9
#
2
1
7
5
8
0
INTERRUPT (SAFETY) LOOP INPUT  
10 11 12  
Field Wiring Terminals 8 & 5 - Interrupt (Safety) Loop Input  
5
8
9
These terminals are intended for use with a loop detector. This  
input functions to reverse a closing gate to the open limit.  
Latching this input will reset the timer to close.  
21  
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A D J U S T M E N T  
OBSTRUCTION OPEN (EDGE/PHOTO EYE INPUT)  
10 11 12  
ACCESSORY WIRING  
Field Wiring Terminals 9 & 5 - Obstruction Open  
5
8
9
(Edge/Photo Eye Input)  
Edge Input: See Programming Section  
This input will reverse an opening gate to the close limit.  
Activating this input when the gate is closing will have no effect.  
NOTE: If upon reversal a second separate obstruction is detected  
(gate edge or RPM sensor), gate will stop and alarm.  
Photo Eye Input: See Programming Section  
This input will pause an opening gate. Once the input (photo eye)  
is cleared, the gate continues to open. Activating this input when  
the gate is closing will have no effect.  
Field Wiring Terminals 10 & 5 - Obstruction Close  
(Edge/Photo Eye Input)  
OBSTRUCTION CLOSE (EDGE/PHOTO EYE INPUT)  
10 11 12  
5
8
9
Edge Input: See Programming Section  
This input will reverse a closing gate to the open limit. When  
reaching the open limit the Timer to-Close, if enabled, will be  
disabled until another command is given. Activating this input  
when the gate is closing will have no effect. NOTE: If upon  
reversal a second separate obstruction is detected (gate edge or  
RPM sensor), gate will stop and alarm.  
Photo Eye Input: See Programming Section  
This input will reverse a closing gate to the open limit. This input  
will not affect the Timer-to-Close. Activating this input when the  
gate is closing will have no effect.  
Field Wiring Terminals 3 & 5 - Stop/Reset Control Input  
These terminals are intended for use with a single stop/reset  
button or the stop control of a three-button station that is  
installed within line of site of the gate. This input functions to  
stop the gate or to reset the gate after an entrapment fault.  
NOTE: This input uses a normally closed circuit and the operator  
will not run until a stop control is installed.  
STOP/RESET BUTTON WIRING  
R1 R2 R3 R4  
O
P
E
N
3
5
CL  
O
SE  
S
T
O
P
STOP  
J1 Terminals 4 & 5 - Hard Close Control Input  
These terminals are intended for use only with the close control  
of a three-button station that is installed within line of sight of the  
gate. A momentary activation of this input will cause the gate to  
close. Activation of this input for longer than three seconds will  
enable the control to be used as a constant pressure override  
device. This will allow the user, in emergencies, to override a  
failed accessory such as a loop detector or photo-eye.  
HARD CLOSE CONTROL INPUT  
4 9 10 11 12 13 14 15 16  
O
P
E
N
1
2
3
5
6
7
8
CL  
O
SE  
CLOSE  
S
T
O
P
J1 Terminals 7 & 5 - Hard Open Control Input  
These terminals are intended for use only with the open control of  
a three-button station that is installed within line of sight of the  
gate. A momentary activation of this input will cause the gate to  
open. Activation of this input for longer than three seconds will  
enable the control to be used as a constant pressure override  
device. This will allow the user, in emergencies, to override a  
failed accessory such as a loop detector or photo eye.  
HARD OPEN CONTROL INPUT  
9 10 11 12 13 14 15 16  
O
P
E
N
1
2
3
4
5
6
7
8
OPEN  
CL  
O
SE  
S
T
O
P
22  
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C O N T R O L B O A R D I L L U S T R A T I O N  
J4 Connector  
Master/Second  
Main Terminal  
Dip Switch #4  
Wiring  
Master/Second  
Potentiometer Timer-to-Close  
Potentiometer Force  
Adjustment  
Dip Switch #2  
Dip Switch #1  
Diagnostic LED  
Limit LEDs  
J2 Connector  
Programming Port  
(factory use only)  
J5 Connector  
SAMS  
Motor Learn  
Button  
Relay Drive  
Troubleshooting LEDs  
J3 Connector  
Aux. Relay Drive  
(not used)  
J1 Terminal  
Troubleshooting LEDs  
23  
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A D J U S T M E N T  
CONTROL BOARD PROGRAMMING AND FEATURES  
MOTOR LEARN BUTTON  
MOTOR LEARN FUNCTION (FORCE PROFILE)  
This function is preprogrammed at factory. If either board or  
motor is replaced, the controller will need to be programmed to  
“LEARN” the specific motor RPM profile of your operator. Switch  
“S3” is provided for this. This is important for accurate force  
control. Failure to do so may result in improper and unsafe  
operation.  
Motor  
Learn  
Button (S3)  
To learn the motor:  
NOTE: Motor Learn must be performed in stand alone mode.  
1. The operator must remain attached to the gate throughout the  
entire process.  
2. Press the motor learn button. The yellow LED should start to  
flash rapidly.  
3. Install a jumper on either the hard open or the hard close input  
terminals. The motor will run for a few seconds and then stop.  
If the LED goes out the motor is learned. If the unit activates a  
limit before completing the learn or some other error occurs,  
the LED will go back to on continuously. If this happens, try  
learning while running in the opposite direction.  
FORCE CONTROL  
Force Control  
Min  
NOTE: It is important that the jumper is in constant contact  
while the gate is moving in learn mode.  
Max  
FORCE CONTROL  
Set the force control pot such that the unit will complete a full  
cycle of gate travel but can be reversed off an obstruction without  
applying an unreasonable amount of force. On most operators  
this will be around the middle of the range.  
NOTE: For LED location refer to illustration on previous page.  
LED Code  
Flashed  
OFF  
Diagnostic Meaning  
Cleared By  
DIAGNOSTICS (LEDS AND CODES)  
There are three diagnostic LEDs. Two red LEDs (OLS, CLS) are  
indicators for the open and close limits. The LEDs are illuminated  
when the limit switch contacts are closed.  
The third amber LED (DIAG) is used to blink out diagnostic  
codes. The number is the count of the number of times the LED  
is on in an 8 second period. The LED is on for approximately 1/2  
second and repeats every second until the number is reached.  
There will be a pause following each pulse cycle (1-6 pulses) to  
differentiate between the different diagnostic codes.  
Normal operation  
N/A  
1
2
3
Single entrapment sensed  
Double entrapment  
Control Input  
Hard Input*  
Failed or no hall  
effect sensor  
Removal of  
problem  
4
Exceed maximum motor  
run time  
Hard Input*  
5
6
Limit fault  
Control Input  
Loss of communications  
between master and  
Removal of  
problem  
second during run mode  
On No  
Flash  
Motor not learned  
Completion  
of Motor Learn  
Routine  
*Hard inputs include open override, close override  
and stop inputs.  
24  
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A D J U S T M E N T  
CONTROL BOARD PROGRAMMING AND  
FEATURES (CONTINUED)  
RELAY DRIVE TROUBLESHOOTING LEDS  
There are 5 troubleshooting LEDs on relay drives K1 through K5. These LEDs will be illuminated when the microcontroller relay drive is  
activated.  
LED  
LED NAME  
DESCRIPTION  
D6  
D5  
D4  
D3  
D2  
Contactor A  
Contactor B  
SAM  
On when Contactor A is activated  
On when Contactor B is activated  
On when SAM relay is activated  
On when Mag Lock relay is activated  
On when Alarm Relay is activated  
Lock  
Alarm  
TROUBLESHOOTING LEDS  
There are 9 troubleshooting LEDs.  
LED  
D11  
D13  
LED NAME  
Radio  
Shadow  
Hard Close  
Stop  
DESCRIPTION  
On when Radio switch is activated  
On when Shadow Loop is activated  
On when Close switch is activated  
On when Stop switch is not activated  
On when Open switch is activated  
On when Open switch is activated  
On when Interrupt/Safety Loop activated  
D15  
D17 (Green)  
D19  
Soft Open  
D21  
D24  
D29  
Hard Open  
Interrupt (Safety) Loop  
Obstruction Open  
On when Edge is activated or when Photo Eye  
Beam is broken  
D31  
Obstruction Close  
On when Edge is activated or when Photo Eye  
Beam is broken  
25  
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PROGRAM SETTINGS (DIP SWITCH S1)  
NOTE: For all S1, S2 and S4 switch settings to take effect, the Save Mode switch must be set to the off position.  
TIMER-TO-CLOSE  
TIMER-TO-CLOSE ENABLE  
This switch enables the auto close timer. The timer to close  
feature works in conjunction with the potentiometer located on  
the board.  
Max = 180 sec  
Min = 0 sec  
TIMER-TO-CLOSE  
ENABLED  
TIMER-TO-CLOSE  
DISABLED  
S1  
S1  
ON  
1
ON  
1
ON  
ON  
2
3
4
2
3
4
(Factory Default)  
SLIDE/SWING  
SLIDE GATE  
SWING GATE  
S1  
S1  
This switch selects slide or swing gate operation, in order to  
optimize gate behavior for specific application.  
SL = Slide • SW = Swing  
ON  
ON  
1
ON  
ON  
1
2
3
4
2
3
4
(Factory Default)  
RIGHT/LEFT OPERATION  
LEFT HAND  
RIGHT HAND  
S1  
S1  
This switch selects the gate opening direction, to the left or to  
the right. Right/Left operation is determined from the inside of  
fence looking out.  
ON  
ON  
1
ON  
ON  
1
2
3
4
2
3
4
(Factory Default)  
UNLOCKED  
ON  
“SAVE” SWITCH  
LOCKED  
S1  
S1  
This switch stores all settings into memory and locks out changes.  
ON APEMs  
NOTE: For any programming changes to take effect this switch  
must be in OFF position. When switch is ON, no settings can be  
changed.  
ON  
ON  
1
2
3
4
1
2
3
4
(Factory Default)  
PROGRAM SETTINGS (DIP SWITCH S2)  
MAGLOCK ENABLE  
MAGLOCK ENABLED  
MAGLOCK DISABLED  
S2  
ON  
ON  
S2  
ON  
ON  
This switch enables the Maglock feature. On an open command  
there will be a half second delay after the maglock relay is  
released before the motor starts.  
1
2
3
4
1
2
3
4
(Factory Default)  
WARNING ENABLE  
WARNING ENABLED  
S2  
WARNING DISABLED  
S2  
This switch enables the gate “in motion” alarm feature. The  
alarm will beep 3 seconds prior to movement and throughout  
movement.  
ON  
ON  
1
ON  
ON  
1
2
3
4
2
3
4
(Factory Default)  
26  
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PROGRAM SETTINGS (DIP SWITCH S2)  
EDGE/PHOTO OPEN  
EDGE/PHOTO CLOSE  
This switch (S2-3) selects edge or photo sensor for the gate  
opening protection input.  
This switch (S2-4) selects edge or photo sensor for the gate  
closing protection input.  
Open Photo Eye (Pause): When the controller is configured  
for photo eyes, the input functions to pause the gate during  
the opening cycle. Once the input is cleared the gate  
continues to open.  
Close Photo Eye (Reverse): When the controller is  
configured for photo eyes, the input functions to reverse the  
gate to the open limit when activated during the close cycle.  
NOTE: Timer-to-Close will reset if enabled.  
Open Edge: When the controller is configured for safety  
edges, the input functions to reverse the gate to the close  
limit when the edge is activated during the opening cycle.  
Close Edge: When the controller is configured for safety  
edges, the input functions to reverse the gate to the open  
limit when activated during the close cycle. The entrapment  
is not cleared at the limit and the timer to close will be  
disabled. The Timer-to-Close may be enabled by activating  
the interrupt loop, soft open or hard open input.  
EDGE OPEN  
PHOTO OPEN  
S2  
S2  
ON  
ON  
EDGE CLOSE  
PHOTO CLOSE  
ON  
ON  
1
2
3
4
1
2
3
4
S2  
S2  
ON  
ON  
(Factory Default)  
ON  
ON  
1
2
3
4
1
2
3
4
(Factory Default)  
MASTER/SECOND SYSTEMS  
Dual Gate Communications  
The control board is capable of running the operator in a master  
or second mode depending on (S4) switch setting.  
When two operators are connected in dual gate configuration  
accessories may be connected to either the master or second.  
Before initiating any command the master unit queries for the  
presence of a “second unit” for a time period of one second. If  
the master gets no response the operator will operate in a stand  
alone mode. NOTE: For single unit applications, a jumper must be  
placed between pins 1 and 2 of the J4 connector. In this mode no  
further communications will take place during travel. If the master  
detects the presence of a second unit the master will continue to  
query the second unit during travel. The second unit will send a  
response to the master for every query. The second operator will  
stop if there is a period of one second or more of no  
NOTE: Do not run Master/Second communication wiring in the  
same conduit as the power and control wiring. The Second unit  
will require a normally close stop circuit for proper system  
operation. After Master/Second wiring has been completed and  
the S4 switch programmed, both units must have their power  
cycled to initiate proper Master/Second communication. The  
motor learn function must be completed in stand alone mode  
prior to Master/Second wiring.  
Master or Standalone  
Gate Setting  
Second Gate  
Setting  
communications.  
Master  
Master  
Unit  
ON  
Unit  
ON  
S4  
S4  
Second  
Unit  
Second  
Unit  
TRAFFIC  
Terminal  
Block  
Terminal  
Block  
Earthground Rod  
(One Side Only)  
STREET  
Shielded  
Cable  
(Twisted Pair)  
Conduit  
SAMS  
Conduit  
Second  
COMPLEX  
OR  
PARKING LOT  
27  
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T R O U B L E S H O O T I N G  
SYMPTOM  
POSSIBLE CAUSES  
No Stop Control.  
SOLUTION  
Operator fails to  
run.  
Check the green LED (D17) on control board. If the green LED is off,  
check to make sure a stop control has been installed across terminals  
J1-3 & J1-5 of the control board.  
Fault in the operator. Check the yellow If the yellow LED blinks six times there is a master/second unit  
diagnostic LED at the top right of the communication failure. If operator is a single unit make sure there is a  
control board next to the programming jumper across J4 pins 1 & 2. If operator is in a dual gate configuration  
dip switches.  
make sure that the communication wiring between the two units is  
undamaged and complete.  
If the yellow light is solid the board needs to learn the motor. Follow  
the directions on page 24.  
An accessory is active or  
malfunctioning. Check the red input  
status LEDs, D11-D31.  
If any red LEDs are on, check the corresponding input. An installed  
accessory may be wired incorrectly or malfunctioning. Remove the  
accessory and test the operator.  
Improper J4 Connector Wiring  
(Master/Second).  
Stand-alone Operators: make sure there is a jumper installed across  
the J4 connector.  
Master/Second Operation: Make sure that the master/second wiring is  
installed correctly and is intact (not damaged).  
Low or no high voltage power.  
Low or no low voltage power.  
Measure the incoming voltage at the unit’s on/off switch. It should be  
within 5% of the operator’s rating when running. Make sure that the  
proper wire gauge was used for the distance between breaker and  
operator by consulting the wiring specifications section on page 14 of  
this manual.  
Measure the voltage at terminals R1 & R2 in the operator. This  
voltage should be within 5% of 24 Vac. If the high voltage power is  
good and the low voltage power is bad, check transformer wiring and  
replace transformer.  
No LEDs illuminated on the control  
board.  
If both primary and secondary power is good, check to make sure that  
the J2 connector is making good contact with the pins on the board. If  
all is good, replace the control board.  
The relays chatter  
when the operator  
begins to move.  
Low secondary (low voltage) power.  
Measure the voltage at terminals R1 & R2 in the operator. This  
voltage should be within 5% of 24 Vac. If the high voltage power is  
good and the low voltage power is bad, check to make sure the circuit  
breaker is not tripped and that the correct primary tap is used on the  
transformer. If breaker and tap are correct replace the transformer.  
The operator runs  
slow and/or trips  
the internal  
Low primary (high voltage) power.  
Measure the incoming line voltage at the unit’s on/off switch as well  
as the meter base or sub panel. Make sure there is not a major  
change in voltage. The voltage at the operator should be within 5% of  
the operator’s rating when running.  
overload.  
Check the number of amps currently being drawn from the panel,  
make sure that the total power being drawn does not exceed the  
panel’s rating.  
Make sure that the proper wire gauge was used for the distance  
between breaker and operator by consulting the wiring specifications  
section on page 15 of this manual.  
Problem in the motor.  
Perform a visual inspection of the motor. Examine the motor’s labels  
for any distortion or signs of over heating. Replace the motor if it is  
humming, grinding or making excessive noise. NOTE: Repeated motor  
problems indicate poor primary power.  
Motor runs but gate  
does not move.  
Damaged or improperly tensioned  
belt/drive chain.  
Make sure that the operator’s belt/drive chain is intact and tensioned  
correctly.  
28  
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T R O U B L E S H O O T I N G c o n t i n u e d  
SYMPTOM  
POSSIBLE CAUSES  
SOLUTION  
Master or Second  
operator is not  
functioning  
Failure to cycle power after setup.  
The power to each unit must be cycled in order to initiate proper  
master/second communication if the operators were previously in  
stand-alone mode.  
properly.  
The communication wiring may be  
Make sure that the communication wire that is used is twisted pair  
damaged or improperly wired for dual and not run in the same conduit with any power wiring. Failure to do  
gate operation.  
so will result in interference across the master/second communication  
line.  
The master or second unit is not  
programmed correctly.  
Review program settings pages 26-27 and check both the master and  
second for proper programming.  
Operator runs but  
then stops and  
reverses direction.  
Entrapment (Force Pot) incorrectly set. This pot must be set so that the gate will run smoothly normally and  
reverse when encountering an obstruction. See page 24.  
Gate is binding or not running  
smoothly.  
Disconnect the gate from the operator and swing the gate open and  
close by hand at normal operating speed. Make sure that the gate  
swings smoothly and does not bind. If the gate is hard to move or  
binds repair the gate.  
Observe red LEDs D29 and D31.  
Both LEDs will indicate the activation of entrapment protection devices  
on terminals J1-9 & J1-10 on the control board. Remove the devices  
and retest. If the operator now runs without fault, check those  
accessories as well as their wiring.  
The Hall Effect Sensor is not aligned/  
adjusted correctly.  
Make sure that the sensor is adjusted so that it is within 20  
thousandths of an inch or as close to the magnets located on the  
gearbox pulley as possible without coming into contact with them or  
the pulley.  
Replace the sensor if it is adjusted correctly but continues to fail.  
If any red LEDs are on, check the corresponding input. An installed  
The operator opens  
immediately upon  
power up and does  
not close.  
Check the red input status LEDs,  
D11-D31, for indication of an active or accessory may be wired incorrectly or malfunctioning. Remove the  
malfunctioning accessory.  
accessory and test the operator.  
Programming  
changes do not  
effect the gate.  
Check the save switch on switch S1-1. If the switch S1-1 is in the on position any subsequent programming  
changes will not affect the gate. To make programming changes,  
switch S1-1 off, make desired changes, and then switch S1-1 on.  
Open photo eye  
reverses gate  
closed when  
activated during  
opening.  
Open obstruction input is programmed The open obstruction input has been programmed to function with  
incorrectly.  
gate edges not photo eyes. Refer to page 27 and reprogram the  
obstruction inputs for correct operation.  
Gate does not  
activate the timer to  
close after the close  
photo eye is  
Close obstruction input is  
programmed incorrectly.  
The close obstruction input has been programmed to function with  
gate edges not photo eyes. Refer to page 27 and reprogram the  
obstruction inputs to match the accessories that are installed on the  
operator.  
broken.  
Radio controls will  
close gate from the  
open limit.  
Radio terminals R1-4 are factory  
configured for residential  
(Open and Close) radio function.  
Configure terminals R1-4 for residential radio function by performing  
the following modifications:  
1. Locate and disconnect the end of the wire running to terminal  
J1-1 from R4.  
2. Connect the end of wire removed from J1-1 to J1-6. Refer to  
page 34.  
29  
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O P E R A T O R M A I N T E N A N C E  
IMPORTANT SAFETY INSTRUCTIONS  
WARNING  
To reduce the risk of SEVERE INJURY or DEATH:  
1. READ AND FOLLOW ALL INSTRUCTIONS.  
2. NEVER let children operate or play with gate controls. Keep  
the remote control away from children.  
6. Keep gates properly maintained. Read the owner’s  
manual. Have a qualified service person make repairs to  
gate hardware.  
7. The entrance is for vehicles ONLY. Pedestrians MUST use  
separate entrance.  
3. ALWAYS keep people and objects away from the gate. NO  
ONE SHOULD CROSS THE PATH OF THE MOVING GATE.  
8. Disconnect ALL power BEFORE performing ANY  
maintenance.  
9. ALL maintenance MUST be performed by a LiftMaster  
professional.  
4. Test the gate operator monthly. The gate MUST reverse on  
contact with a rigid object or stop when an object activates  
the non-contact sensors. After adjusting the force or the  
limit of travel, retest the gate operator. Failure to adjust and  
retest the gate operator properly can increase the risk of  
INJURY or DEATH.  
10.  
SAVE THESE INSTRUCTIONS.  
5. Use the emergency release only when the gate is  
not moving.  
CHECK AT LEAST ONCE EVERY  
DESCRIPTION  
TASK  
3 MONTHS  
6 MONTHS  
12 MONTHS  
RPM Sensor (Hall Effect) Check for proper adjustment  
X
X
X
X
External Entrapment  
Protection Systems  
Check for proper operation  
Gate Caution Signs  
Manual Disconnect  
Drive Chain  
Sprockets and Pulleys  
Gate  
Accessories  
Electrical  
Frame Bolts  
Total Unit  
Make sure they are present  
Check and operate  
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Check for excessive slack and lubricate  
Check for excessive slack and lubricate  
Inspect for wear or damage  
Check all for proper operation  
Inspect all wire connections  
Check for tightness  
Inspect for wear or damage  
NOTES  
1. Severe or high cycle usage will require more frequent  
maintenance checks.  
2. Inspection and service should always be performed anytime a  
malfunction is observed or suspected.  
3. Limit switches may have to be reset after any major drive chain  
adjustments.  
4 If lubricating chain, use only a proper chain lube spray or a  
lightweight motor oil. Never use grease or silicone spray.  
5. When servicing, please do some “house cleaning” of the  
operator and the area around the operator. Pick up any debris  
in the area. Clean the operator as needed.  
6. It is suggested that while at the site voltage readings be taken  
at the operator. Using a Digital Voltmeter, verify that the  
incoming voltage to the operator it is within ten percent of the  
operators rating.  
30  
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S I N G L E P H A S E W I R I N G D I A G R A M ( S W 4 7 0 )  
NOTE 1  
MOTOR  
SWITCH  
1 PHASE  
POWER IN  
SEE NOTE 2  
GROUND  
NOTE 1  
PRIMARY  
GL CONTROL BOARD  
J2 PLUG  
SEE NOTE 4  
24V  
SEC.  
R2  
ALARM ASSY  
76-G0564  
24 Vac - IN  
24 Vac - COMMON  
SOFT OPEN  
NC  
“B” LIMIT  
CONTACTOR B  
“A” LIMIT  
CONTACTOR A  
RPM - IN  
RPM - SUPPLY  
RPM GND  
RPM  
SENSOR  
J2 PLUG  
RADIO COMMAND  
SHADOW  
+24 Vdc  
R3  
CLOSE  
STOP  
SOFT OPEN  
R4  
HARD OPEN  
INT. LOOP  
OBS. OPEN  
OBS. CLOSE  
24 Vac - COMMON  
DC - GND  
LEGEND  
PERMANENT TERMINAL  
J1 TERMINAL BLOCK  
TERMINAL BLOCK  
LOCK 1  
LOCK 2  
ALARM 1  
ALARM ASSY  
76-G0564  
ALARM 1  
B+  
R1  
R2  
R3  
R4  
1
2
J4  
24 Vac  
RADIO  
SIGNAL  
DUAL GATE  
APPLICATIONS:  
NOTES:  
CONTROL WIRING TYPE - GL  
1) TRANSFORMER PRIMARY VOLTAGE SAME AS OPERATOR LINE VOLTAGE  
24V SECONDARY 60VA.  
FIELD WIRING & ADJUSTMENTS  
2) TERMINAL DESIGNATIONS SHOWN FOR 115V ONLY.  
3) OPTIONAL WIRE HARNESS.  
MODEL TYPES:  
SW470 (MSW)  
4) (B+) AND (B-) ARE 100dB SAFETY ALARMS.  
HORSEPOWER:  
1/2  
VOLTAGE/PHASE:  
115V & 230V, 50/60Hz - 1 PHASE ONLY  
DRAWING NUMBER:  
01-G1978  
REVISION:  
DATE:  
7/29/03  
E
ECN: 03-0401  
845 Larch Avenue, Elmhurst, IL 60125  
31  
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S I N G L E P H A S E W I R I N G D I A G R A M ( S W 4 9 0 )  
(W)  
1 PHASE  
POWER IN  
115 VOLT  
MOTOR  
CONNECTION  
(GN)  
(GN)  
GROUND  
SEE NOTE 2  
230V ONLY  
SEE NOTE 5  
230 VOLT  
MOTOR  
CONNECTION  
SEE NOTE 1  
PRIMARY  
115 ONLY  
SEE NOTE 5  
(W)  
GL CONTROL BOARD  
J2 PLUG  
R2  
R1  
(BK)  
(Y)  
(BL)  
(GY)  
(Y)  
ALARM ASSY  
76-G0564  
24 Vac - IN  
24V  
B-  
Sec.  
24 Vac -COMMON  
SOFT OPEN  
NC  
SEE NOTE 4  
(Y)  
“B” LIMIT  
CONTACTOR B  
(Y)  
“A” LIMIT  
CONTACTOR A  
RPM - IN  
RPM - SUPPLY  
RPM GND  
RPM SENSOR  
J2 PLUG  
RADIO COMMAND  
SHADOW  
R3  
+24 Vdc  
CLOSE  
STOP  
SOFT OPEN  
HARD OPEN  
INT. LOOP  
OBS. OPEN  
OBS. CLOSE  
24 Vac - COMMON  
DC - GND  
R4  
LEGEND  
PERMANENT TERMINAL  
J1 TERMINAL BLOCK  
TERMINAL BLOCK  
LOCK 1  
LOCK 2  
R1  
R2  
R3  
R4  
ALARM 1  
ALARM ASSY  
76-G0564  
ALARM 1  
B+  
24 Vac  
RADIO  
SIGNAL  
1
2
J4  
DUAL GATE  
APPLICATIONS:  
NOTES:  
CONTROL WIRING TYPE - GL  
1) TRANSFORMER PRIMARY VOLTAGE SAME AS OPERATOR LINE VOLTAGE  
24V SECONDARY 60VA.  
FIELD WIRING & ADJUSTMENTS  
2) RELAY VOLTAGE SAME AS LINE VOLTAGE.  
3) OPTIONAL WIRE HARNESS.  
MODEL TYPES:  
SW490 (HSW)  
4) (B+) AND (B-) ARE 100dB SAFETY ALARMS.  
5) WIRE COLOR: 120V BLACK, 208V RED, 230V ORANGE.  
HORSEPOWER:  
1/2, 3/4 & 1  
VOLTAGE/PHASE:  
115V, 208 & 230V - 1 PHASE ONLY  
DRAWING NUMBER:  
01-G1979-1  
REVISION:  
DATE:  
7/29/03  
E
ECN: 03-0401  
845 Larch Avenue, Elmhurst, IL 60125  
32  
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T H R E E P H A S E W I R I N G D I A G R A M ( S W 4 9 0 )  
SEE NOTE 4  
'
'
'
'
ON/OFF  
SWITCH  
3 PHASE  
POWER IN  
208/230V MOTOR  
460V MOTOR  
SEE NOTE 2  
GL CONTROL BOARD  
ALARM ASSY  
76-G0564  
B-  
Note 1  
J2 PLUG  
R2  
24V  
24 Vac - IN  
Sec.  
24 Vac -COMMON  
O/L  
NOTE 4  
SOFT OPEN  
NC  
“B” LIMIT  
CONTACTOR B  
575V MOTOR  
“A” LIMIT  
CONTACTOR A  
RPM - IN  
RPM - SUPPLY  
RPM GND  
RPM SENSOR  
J2 PLUG  
(OPTIONAL)  
RADIO COMMAND  
SHADOW  
R3  
+24 Vdc  
CLOSE  
STOP  
R4  
SOFT OPEN  
HARD OPEN  
INT. LOOP  
OBS. OPEN  
OBS. CLOSE  
LEGEND  
PERMANENT TERMINAL  
J1 TERMINAL BLOCK  
TERMINAL BLOCK  
24 Vac - COMMON  
DC - GND  
LOCK 1  
LOCK 2  
ALARM 1  
ALARM 1  
SEE NOTE 5  
ALARM ASSY  
76-G0564  
B+  
R1  
R2  
R3  
R4  
1
2
24 Vac  
RADIO  
SIGNAL  
J4  
DUAL GATE  
APPLICATIONS:  
NOTES:  
CONTROL WIRING TYPE - GL  
1) TRANSFORMER PRIMARY VOLTAGE SAME AS OPERATOR LINE VOLTAGE  
24V SECONDARY 60VA.  
FIELD WIRING & ADJUSTMENTS  
2) WIRE COLOR: 208V RED, 230V ORANGE, 460V VIOLET, 575V GRAY  
3) OPTIONAL WIRE HARNESS (SEE DRAWING 90-G0532).  
4) OVERLOAD PROTECTION EITHER IN MOTOR OR FROM AN EXTERNAL  
OVERLOAD.  
MODEL TYPES:  
SW490 (HSW)  
HORSEPOWER:  
1/2, 3/4 & 1  
VOLTAGE/PHASE:  
208,230,460 & 575V - 3 PHASE ONLY  
5) (B+) AND (B-) ARE 100dB SAFETY ALARMS.  
DRAWING NUMBER:  
01-G1979-3  
REVISION:  
DATE:  
7/29/03  
E
ECN: 03-0401  
845 Larch Avenue, Elmhurst, IL 60125  
33  
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C O N T R O L C O N N E C T I O N D I A G R A M S  
GL BOARD  
J1 TERMINAL BLOCK  
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16  
SOFT OPEN  
INPUT (N.O.)  
3
6
9
#
2
5
8
0
1
7
HARD CLOSE CONTROL  
INPUT (N.O.)  
24 Vac ACCESSORY POWER MAY BE FOUND ON  
THESE TERMINALS  
OPEN  
CLO  
SE  
R1  
R3  
R2  
R4  
HARD OPEN  
ST  
OP  
CONTROL INPUT (N.O.)  
OPEN  
CLO  
SE  
24 Vac  
ST  
OP  
STOP/RESET  
CONTROL INPUT (N.C.)  
NOTE: See wiring diagrams shipped with kit for  
additional information. See owner’s manual for wiring  
distances and wire gauge information.  
OPEN  
CL  
O
SE  
INTERRUPT (SAFETY) LOOP  
INPUT (N.O.)  
ST  
OP  
WARNING: All controls that are to be used to operate  
the gate system, MUST be installed where the user  
cannot come into contact with the gate while operating  
the controls. Also, always install the controls where the  
user has full view of gate operation.  
SHADOW LOOP  
INPUT (N.O.)  
OBSTRUCTION OPEN  
EDGE/PHOTO EYE INPUT (N.O.)  
* All inputs are normally open and momentary, except  
the stop (N.C.). The following instructions are based  
upon UL325, and include recommendations for  
significant increase in safety.  
RESIDENTIAL RADIO  
(SINGLE BUTTON) INPUT (N.O.)  
* We strongly recommend that you follow the UL  
guidelines presented throughout the manual.  
Installation device instructions – always follow the  
instructions provided by the manufacturer when  
installing and adjusting any control device. If these  
instructions are contrary to the advice given here,  
call for assistance.  
OBSTRUCTION CLOSE  
EDGE/PHOTO EYE INPUT (N.O.)  
34  
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R E P A I R P A R T S - S W 4 7 0  
Refer to the parts lists below for replacement parts available for  
your operator. If optional modifications and/or accessories are  
not be available. Please consult a parts and service representative  
regarding availability of individual components. Refer to page 40  
included with your operator, certain components may be added or for all repair part ordering information.  
removed from these lists. Individual components of each kit may  
Complete Electrical Panel Replacement Kits  
SERVICE KITS  
To order a complete electrical box replacement kit, add a  
K- prefix to the model number of your operator. For example:  
ITEM  
PART#  
DESCRIPTION  
Arm Assembly Kit  
Arm Channel  
Arm Extension  
Gate Bracket  
Arm Hub  
Bearing 1-1/4" 1/8"  
Arm Stop  
Tinnerman Nut  
K75-18364  
10-2108-T  
10-2109  
10-2111  
07-2101  
12-3000  
07-2103  
80-2103  
K75-18365  
SW420-33-11 (Operator) = K73SW420-33-11 (Electrical Box Kit)  
A1  
A2  
A3  
A4  
A5  
A6  
A7  
Motor Kits  
To order a motor replacement kit, add a K prefix to the number of  
your motor and remove the second dash (-). For example:  
20-5752-33 (Motor Number) = K20-575233 (Motor Kit)  
INDIVIDUAL PARTS  
Drive Assembly Kit  
(Motor Not Included)  
Shaft  
Self Aligning  
Flanged Mount Bearing  
ITEM  
1
2
3
4
5
6
7
8
PART#  
DESCRIPTION  
D1  
D2  
11-2101  
12-4164  
10-2013  
Mounting Bracket  
Reducer Bracket  
Motor Bracket  
Switch Box Cover  
Sensor Support Bracket  
On/Off Switch  
Hall Effect Sensor Assembly  
Alarm Assembly  
10-2103-T  
10-2104-T  
10-G0326  
10-G0387  
23-3001  
K74-18382  
76-G0564  
10-18461  
K001A5566  
21-3260-1  
G232016  
D3  
D4  
D5  
D6  
D7  
D8  
D9  
D10  
G152142  
15-40B12-EEF  
G162101  
G176017  
17-G0475  
19-2153  
Sprocket, 40B42 1x1/4"  
Sprocket, 40B12 5/8"  
Belt 25"  
Pulley for Motor  
Molded Pulley 6"  
Chain, #40-53 Pitches  
Master Link, #40  
Motor, 115V, 1PH, 1/2HP  
(Not Included in Kit)  
Motor 208/230V, 1PH, 1/2HP  
(Not Included in Kit)  
9
Side Cover  
19-5040  
G202100  
10  
11  
12  
13  
Control Board, GL  
Transformer, Dual Voltage 24V  
Limit Switch  
Capacitor for 115V  
Capacitor for 230V  
20-2101-LD  
29-3530  
29-12110  
03-8024-K  
D11  
D12  
G322100  
75-G0089  
Reducer 30:1  
Limit Collar Assembly  
14  
Mini Contactor 24V  
35  
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I L L U S T R A T E D P A R T S - S W 4 7 0  
A7  
A2  
A1  
A3  
A4  
A5  
A6  
D8  
D9  
D3  
9
1
D1  
D12  
6
4
1
8
D2  
2
D4  
D5  
D11  
10  
D7  
3
11  
14  
5
12  
7
D10  
13  
D6  
36  
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R E P A I R P A R T S - S W 4 9 0  
Refer to the parts lists below for replacement parts available for  
SERVICE KITS  
DESCRIPTION  
your operator. If optional modifications and/or accessories are  
included with your operator, certain components may be added or  
removed from these lists. Individual components of each kit may  
not be available. Please consult a parts and service representative  
regarding availability of individual components. Refer to page 40  
for all repair part ordering information.  
ITEM  
PART#  
A1-7  
A1  
K75-18366  
08-2001  
10-2011  
70-18618  
10-3900  
Arm Assembly Kit  
Rod End Fitting  
Gate Bracket  
A2  
A3  
Extension Arm  
A4  
Galvanized Tube 39"  
OD 1" IDx1.315"  
Sleeve Bearing  
Complete Electrical Panel Replacement Kits  
To order a complete electrical box replacement kit, add a  
K- prefix to the model number of your operator. For example:  
A5  
A6  
A7  
12-10172  
07-2103  
06-2025-T  
K75-18367  
Actuator Arm Stop  
Actuator Arm Assembly  
Drive Assembly Kit  
(Motor Not Included)  
SW420-33-11 (Operator) = K73SW420-33-11 (Electrical Box Kit)  
Motor Kits  
D1  
D2  
D3  
D4  
D5  
10-2008  
10-G0539  
Switch Bracket  
To order a motor replacement kit, add a K prefix to the number of  
your motor and remove the second dash (-). For example:  
Sensor Bracket  
Output Shaft*  
20-5752-33 (Motor Number) = K20-575233 (Motor Kit)  
12-2125  
G152002  
Flange Ball Bearing 1-1/4" Bore  
Sprocket, 50B60  
1-1/2x3/8 2-1/4" LTB  
D6  
15-50B12LGH Sprocket, 50B12 1/4KW  
D7  
16-4L280  
17-2002  
G172701  
19-2075  
19-9024  
G232016  
32-2001  
Belt 28"  
Pulley, 2", Bore 5/8", Key 3/16"  
Pulley, 7"  
Chain, #50-75  
Master Link, #50  
Limit Switch N.C. SPST  
Gear Reducer  
INDIVIDUAL PARTS  
D8  
ITEM  
PART#  
DESCRIPTION  
D9  
D10  
D11  
1
2
3
4
5
10-18458  
10-2013  
73-18457  
10-G0326  
23-3001  
23-3005  
Side Plate Cover  
Mounting Bracket  
Frame Assembly  
Switch Box Cover  
On/Off Switch, 1PH  
On/Off Switch, 3PH  
D12  
D13  
D14  
D15  
D16  
D17  
D18  
D19  
D20  
D21  
75-G0400  
75-G0401  
K74-18382  
80-1003  
Single Swing Collar  
Double Swing Collar  
Hall Effect Sensor Assembly  
Tinnerman Nut  
6
7
8
76-G0564  
K001A5566  
12-2002  
Alarm Assembly  
Control Board, GL  
Bearing 1-1/2"x1-3/4"  
31-2712  
Nylon Spacer  
80-207-19  
80-207-23  
80-207-25  
Key 1/4x1/4x1-1/2"  
Key 3/16x1-3/8"  
Key 3/8x3/8x2-1/4"  
E1  
E2  
E3  
03-8024-K  
21-3260-1  
24-115-1  
24-230-5  
25-2006  
25-2008  
25-2010  
25-2015  
25-2020  
25-4002-5  
25-4006  
Mini Contactor 24V  
Transformer, Dual Voltage  
Relay 115 Vac  
Relay, 208/230V  
E4  
6 Amp Overload Fuse  
8 Amp Overload Fuse  
10 Amp Overload Fuse  
15 Amp Overload Fuse  
20 Amp Overload Fuse  
2.5 Amp Overload Fuse  
4.0-6.0 Amp Overload Fuse  
F
20-1050-1T  
20-1075-1T  
20-1100-1T  
20-3050-1T  
Motor, 115/230V TEFC, 1PH, 1/2HP  
Motor, 115/230V TEFC, 1PH, 3/4HP  
Motor, 115/230V TEFC, 1PH, 1HP  
Motor, 230/460V TEFC, 3PH, 1/2HP  
20-3075B-4T Motor, 230/460V TEFC, 3PH, 3/4HP  
20-3100B-4T Motor, 230/460V TEFC, 3PH, 1HP  
20-3050B-5T Motor, 575V TEFC, 3PH, 1/2HP  
20-3100M-5T Motor, 575V TEFC, 3PH, 3/4HP  
20-3100-5T  
Motor, 575V TEFC, 3PH, 1HP  
37  
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I L L U S T R A T E D P A R T S - S W 4 9 0  
A5  
A1  
A4  
A5  
A3  
A2  
D10  
8
A7  
D11  
1
D5  
A6  
D21  
D3  
D20  
6
3
D1  
D14  
D15  
D12  
D18  
D12  
D17  
D6  
D4  
5
2
D19  
D13  
4
D7  
D8  
D16  
D2  
D9  
F
E5  
E3  
E1  
7
E2  
E4  
38  
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V A R I A B L E P A R T S - S W 4 9 0  
VARIABLE PARTS LIST - SW490  
DESCRIPTION  
PART  
PART NO.  
USED ON  
20-1050-1T  
1PH 1/2HP Base Mnt. 115/230V TEFC  
SW490-33-11, SW490-33-21, SW490-50-11,  
SW490-50-21  
20-1075-1T  
20-1100B-2T  
20-3050-1T  
1PH 3/4HP Base Mnt. 115/230V TEFC  
1PH 1HP Base Mnt. 115/230V TEFC  
3PH 1/2HP Base Mnt. 230/460V TEFC  
SW490-75-11, SW490-75-21  
SW490-100-11, SW490-100-21  
20-XXXX  
(Motor)  
SW490-33-23, SW490-33-43, SW490-50-23,  
SW490-50-43  
20-3075B-4T  
20-3100B-4T  
3PH 3/4HP Base Mnt. 230/460V TEFC  
3PH 1HP Base Mnt. 230/460V TEFC  
SW490-75-23, SW490-75-43  
SW490-100-23, SW490-100-43  
23-XXXX  
(Switch)  
23-3001  
23-3005  
On/Off SW, 1PH  
On/Off SW, 3PH  
All 1PH  
All 3PH  
24-XXX-X  
(Relay)  
24-115-1  
24-230-5  
TPDT, 115V Coil (IR)  
TPDT, 230V Coil (IR)  
All 115V 1PH  
All 230V 1PH  
25-2006  
25-2008  
25-2010  
25-2015  
25-2020  
6 Amp  
SW490-33-21, SW490-50-21, SW490-75-21  
SW490-33-11  
25-20XX  
8 Amp  
(Overload)  
10 Amp  
15 Amp  
20 Amp  
SW490-50-11, SW490-100-21  
SW490-75-11  
SW490-100-11  
25-40XX  
25-4001-8K  
25-4002-5K  
25-4004-K  
1.2 to 1.8 Amp  
1.6 to 2.5 Amp  
3.3 to 5.5 Amp  
SW490-100-53-G, SW490-75-53-G  
SW490-100-43-G  
(Overload)  
SW490-100-23-G, SW490-100-83-G  
S A F E T Y A C C E S S O R I E S F O R S E C O N D A R Y E N T R A P M E N T P R O T E C T I O N  
The following devices are acceptable for Safety Accessories for  
secondary entrapment protection.  
PHOTO-ELECTRIC CONTROLS  
MODEL  
DESCRIPTION  
Photocell/Electric Eye - 30' (9 m) Maximum Range  
SENSING EDGES  
VOLTAGE  
AOMRON  
+24V ac/dc  
MODEL  
DESCRIPTION  
G65MG0204  
Miller MG020 2-wire electric edge for gates. Sensitized on three sides.  
Requires mounting channel (4' [1.2 m] long).  
G65MG0205  
Miller MG020 2-wire electric edge for gates. Sensitized on three sides.  
Requires mounting channel (5' [1.5 m] long).  
G65ME12C5  
G65MGR205  
G65MGS205  
Mounting Channel - 5' (1.5 m) long  
Miller MGR20 2-wire electric edge in 5' (1.5 m) lengths for 2" (5 cm) round post.  
Miller MGR20 2-wire electric edge in 5' (1.5 m) lengths for 2" (5 cm) square post.  
39  
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W A R R A N T Y P O L I C Y A N D S E R V I C E  
®
LIFTMASTER TWO YEAR LIMITED WARRANTY  
The Chamberlain Group, Inc. warrants to the final purchaser of this product, for the structure in which this product is originally  
installed, that it is free from defect in materials and/or workmanship for a period of two years from the date of purchase. The proper  
operation of this product is dependent on your compliance with the instructions regarding installation, operation, maintenance and  
testing. Failure to comply strictly with those instructions will void this limited warranty in its entirety.  
If, during the limited warranty period, this product appears to contain a defect covered by this limited warranty, call 1-800-528-2806,  
toll free, before dismantling this product. Then send this product, pre-paid and insured, to our service center for warranty repair. You  
will be advised of shipping instructions when you call. Please include a brief description of the problem and a dated proof-of-purchase  
receipt with any product returned for warranty repair. Products returned to Seller for warranty repair, which upon receipt by Seller are  
confirmed to be defective and covered by this limited warranty, will be repaired or replaced (at Seller’s sole option) at no cost to you  
and returned pre-paid. Defective parts will be repaired or replaced with new or factory-rebuilt parts at Seller’s sole option.  
ALL IMPLIED WARRANTIES FOR THE PRODUCT, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTIES OF  
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO THE TWO YEAR LIMITED  
WARRANTY PERIOD SET FORTH ABOVE, AND NO IMPLIED WARRANTIES WILL EXIST OR APPLY AFTER SUCH PERIOD. Some  
States do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you. THIS LIMITED  
WARRANTY DOES NOT COVER NON-DEFECT DAMAGE, DAMAGE CAUSED BY IMPROPER INSTALLATION, OPERATION OR CARE  
(INCLUDING, BUT NOT LIMITED TO ABUSE, MISUSE, FAILURE TO PROVIDE REASONABLE AND NECESSARY MAINTENANCE,  
UNAUTHORIZED REPAIRS OR ANY ALTERATIONS TO THIS PRODUCT), LABOR CHARGES FOR REINSTALLING A REPAIRED OR  
REPLACED UNIT, OR REPLACEMENT OF BATTERIES.  
THIS LIMITED WARRANTY DOES NOT COVER ANY PROBLEMS WITH, OR RELATING TO, THE GATE OR GATE HARDWARE,  
INCLUDING BUT NOT LIMITED TO THE GATE ALIGNMENT OR HINGES. THIS LIMITED WARRANTY ALSO DOES NOT COVER ANY  
PROBLEMS CAUSED BY INTERFERENCE. ANY SERVICE CALL THAT DETERMINES THE PROBLEM HAS BEEN CAUSED BY ANY OF  
THESE ITEMS COULD RESULT IN A FEE TO YOU.  
UNDER NO CIRCUMSTANCES SHALL SELLER BE LIABLE FOR CONSEQUENTIAL, INCIDENTAL OR SPECIAL DAMAGES ARISING IN  
CONNECTION WITH USE, OR INABILITY TO USE, THIS PRODUCT. IN NO EVENT SHALL SELLER’S LIABILITY FOR BREACH OF  
WARRANTY, BREACH OF CONTRACT, NEGLIGENCE OR STRICT LIABILITY EXCEED THE COST OF THE PRODUCT COVERED HEREBY.  
NO PERSON IS AUTHORIZED TO ASSUME FOR US ANY OTHER LIABILITY IN CONNECTION WITH THE SALE OF THIS PRODUCT.  
Some states do not allow the exclusion or limitation of consequential, incidental or special damages, so the above limitation or  
exclusion may not apply to you. This limited warranty gives you specific legal rights, and you may also have other rights which vary  
from state to state.  
HOW TO ORDER REPAIR PARTS  
OUR LARGE SERVICE ORGANIZATION  
SPANS AMERICA  
FOR INSTALLATION AND SERVICE INFORMATION,  
CALL OUR TOLL FREE NUMBER  
1-800-528-2806  
www.liftmaster.com  
WHEN ORDERING REPAIR PARTS  
PLEASE SUPPLY THE FOLLOWING INFORMATION:  
PART NUMBER DESCRIPTION MODEL NUMBER  
ADDRESS ORDER TO:  
THE CHAMBERLAIN GROUP, INC.  
Technical Support Group  
6020 Country Club Road  
Tucson, AZ 85706  
© 2010, The Chamberlain Group, Inc.  
01-18452H  
All Rights Reserved  
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