PS536GS
Gas
Domestic, Std. Export & CE
ENGLISH/French/Spanish
P/N 50236
Rev. B • V1 • 10/04
Price $30.00
PS536GS Gas Ovens
Models:
Combinations:
•
PS536GS Gas
•
•
•
SingleOven
DoubleOven(Two-Stack)
TripleOven(Three-Stack)
OWNER'S OPERATING, INSTALLATION,
ANDPARTSMANUAL
for domestic, standard export and CE export ovens
©2003MiddlebyMarshall, Inc.
is a registered trademark of Middleby Marshall, Inc. All rights reserved.
Middleby Cooking Systems Group
•
1400 Toastmaster Drive
•
Elgin, IL 60120
•
(847)741-3300
•
FAX (847)741-4406
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TABLEOFCONTENTS
page
page
SECTION1-DESCRIPTION ................................................... 4
I. OVEN USES............................................................. 4
B. Connection ...................................................... 13
V. GASSUPPLY .......................................................... 14
A. Gas Utility Rough-In Recommendations ....... 14
B. Gas Conversion .............................................. 14
C. Connection ...................................................... 14
SECTION3-OPERATION ..................................................... 16
I. LOCATION AND DESCRIPTION OF CONTROLS . 16
A. BLOWER ( ) Switch ..................................... 16
B. HEAT ( ) Switch ............................................ 16
II. OVENCOMPONENTS ............................................. 4
A. Window ............................................................. 4
B. Conveyor End Stop........................................... 4
C. Eyebrows .......................................................... 4
D. End Plugs ......................................................... 4
E. Control Panel.................................................... 4
F. Machinery Compartment and Control
Compartment Doors ........................................ 4
C. CONVEYOR (
) Switch ............................... 16
G. Serial Plate ....................................................... 4
H. Conveyor Drive Motor ....................................... 4
D. Conveyor Speed Controller ............................. 16
E. Digital Temperature Controller ....................... 16
I.
Crumb Pans ..................................................... 4
F. Machinery and Control Compartment
Safety Switches ............................................... 16
J. Conveyor ........................................................... 4
K. Gas Burner ....................................................... 4
L. Blowers............................................................. 4
M. Air Fingers ........................................................ 4
III. OVENSPECIFICATIONS ......................................... 4
A. Dimensions ...................................................... 4
B. General Specifications..................................... 4
C. Electrical Specifications for Gas Ovens .......... 5
II. NORMALOPERATION,STEP-BY-STEP ................ 17
A. Daily Startup Procedure .................................. 17
B. Daily Shutdown Procedure ............................. 17
III. QUICK REFERENCE: DIGITAL TEMPERATURE
CONTROLLER ....................................................... 18
SECTION4-MAINTENANCE ................................................. 19
I. MAINTENANCE-DAILY.......................................... 19
II. MAINTENANCE-MONTHLY .................................. 20
III. MAINTENANCE - EVERY 3 MONTHS .................... 20
IV. MAINTENANCE - EVERY 6 MONTHS .................... 22
SECTION5-PARTSLIST ..................................................... 23
D. Gas Orifice and Pressure Specifications -
Domestic and Standard Export Ovens ............ 5
E. Gas Orifice and Pressure Specifications -
CE Ovens.......................................................... 5
SECTION2-INSTALLATION.................................................. 6
I.
KEYSPAREPARTSKIT .......................................... 23
I.
INSTALLATIONKIT .................................................. 7
II. INSTALLATIONKIT.................................................. 25
III. PANELS, END PLUGS AND WINDOW ................... 27
IIIa. PANELS, END PLUGS WITHOUT WINDOW .......... 27
IV. CONTROLCOMPARTMENT ................................... 29
V. MACHINERYCOMPARTMENTANDGASTRAIN .... 31
VI. REARCOMPARTMENTANDBLOWERS................ 33
VII. SINGLE-BELTCONVEYORS .................................. 35
VIII. SPLIT-BELTCONVEYORS ..................................... 37
SECTION6-ELECTRICALWIRINGDIAGRAMS ................... 39
II. VENTILATIONSYSTEM ........................................... 8
A. Requirements .................................................. 8
B. Recommendations .......................................... 8
C. Other Ventilation Concerns .............................. 8
III. ASSEMBLY ............................................................... 9
A. Top Panel and Base Pad Assembly ............... 9
B. Stacking ........................................................... 10
C. Restraint Cable Installation ............................ 10
D. Conveyor Installation....................................... 11
E. Final Assembly ................................................ 12
IV. ELECTRICAL SUPPLY ........................................... 13
A. Additional Information - Gas Ovens................ 13
I. WIRINGDIAGRAM, PS536GSGASOVEN
(DOMESTIC & STD. EXPORT VERSION),
208/240V, 50/60 Hz, 1 Ph ................................ 39
3
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SECTION1-DESCRIPTION
J. Conveyor: Moves the food product through the oven.
I. OVEN USES
Not Shown:
PS536GS ovens can be used to bake and/or cook a wide
variety of food products, such as pizza, pizza-type products,
cookies, sandwiches and others.
K. Gas Burner: Heats air, which is then projected to the air
fingers by the blowers.
L. Blowers: Fans that project hot air from the gas burner to
the air fingers.
II. OVEN COMPONENTS - see Figure 1-1.
A. Window: Allows the user to see and access food products
inside the baking chamber.
M. Air Fingers: Project streams of hot air onto the food
product.
B. Conveyor End Stop : Prevents food products from falling
off the end of the moving conveyor.
Fig. 1-1 - Oven Components
B
C. Eyebrows: Can be adjusted to various heights to prevent
heat loss into the environment.
C
D
F
E
D. End Plugs: Allow access to the oven's interior.
E. Control Panel: Location of the operating controls for the
oven. Refer to Section 3, Operation, for details.
F. Machinery Compartment and Control Compartment
Doors: Allow access to the oven's interior components.
One door is located at each end of the oven. No user-
servicable parts are located inside the machinery compart-
ment or control compartment.
G. Serial Plate: Providesspecificationsfortheoventhataffect
installation and operation. Refer to Section 2, Installation,
for details.
G
A
H. Conveyor Drive Motor: Moves the conveyor.
H
I.
Crumb Pans: Catch crumbs and other material that drop
through the conveyor belt. One crumb pan is located
underneath each end of the conveyor.
I
J
III. OVEN SPECIFICATIONS
Table 1-1: Dimensions
Overall Height:
Overall Depth:
single oven with 17-1/2" (446mm) legs
43-1/2" (1105mm)
63" (1600mm)
66" (1676mm)
71" (1803mm)
71" (1803mm)
double oven with standard 17-1/2" (446mm) legs
double oven with optional 20-1/2" (521mm) legs
double oven with optional 25-1/2" (648mm) legs
triple oven with 6" (152mm) legs
46" (1168mm)
61" (1549mm)
57" (1447mm)
77" (1956mm)
36" (914mm)
Overall Length: with standard 60"/1524mm conveyor
with optional 56"/1422mm conveyor
with optional 76"/1930mm conveyor
Baking Chamber Length
Conveyor Width: Single Belt
20" (508mm)
Split Belt
2 x 9-1/2" (241mm)
Conveyor Length
56" (1422mm) or 60" (1524mm) or 76" (1930mm)
Recommended Minimum Clearances:
Rear of oven to wall
3" (76mm)
1" (25.4mm)
1" (25.4mm)
Control end of conveyor to wall
Non-control end of oven to wall
Table 1-2: General specifications (per oven cavity)
Weight
400 lbs. (182kg)
Rated Heat Input: Natural gas ovens
Propane ovens
70,000 BTU (17,638 kcal, 20.51 kW/hr.)
70,000 BTU (17,638 kcal, 20.51 kW/hr.)
550°F (288°C)
Maximum Operating Temperature
Warmup Time
25 minutes
4
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SECTION1-DESCRIPTION
Table 1-3: Electrical specifications for gas ovens (per oven cavity)
Main Blower
Voltage
Control
Circuit Voltage
Current
Draw
Phase
Freq.
Poles
Wires
208/240V
120V conv. speed control
& drive motor; all others
as per line (208/240V)
1 Ph
50/60 Hz
6A *
2 Pole
3 Wire (2 hot, 1 gnd)
* The current draw shown above is an average value for normal operation. The initial amperage draw on oven startup may exceed the listed
value.
Table 1-4: Gas orifice and pressure specifications (per oven cavity) - Domestic and standard export ovens
Orifice (Manifold)
Gas Type
Natural
Main Orifice I.D.
Bypass Orifice I.D.
0.0810” (2.0574mm, #46 drill)
0.052” (1.3208mm, #55 drill)
Supply (Inlet) Pressure
6-12” W.C. (14.9-29.9mbar) *
11-14” W.C. (27.4-34.9mbar) *
Pressure
0.0935” (2.3749mm, #42 drill)
0.081” (2.0574mm, #46 drill)
4.0” W.C. (9.93mbar)
10.5” W.C. (26.15mbar)
Propane
* The gas supply pressures and orifice sizes shown are for ovens installed in North America. The required gas supply pressures and orifice
sizes of ovens installed in other locations are dependent on the local gas type and on all applicable local codes.
Table 1-5: Gas orifice and pressure specifications (per oven cavity) - CE ovens
Supply (Inlet) Pressure
IT,PT,ES,SE,
Main
Orifice
dia.
UK,CH,IT,AT,
DK,FI
I2H
SE,CH,AT,DK,
FI,DE,NL
I3B/P
BE,IE,IT,PT,
ES,UK
I3+
Orifice
(Manifold)
Pressure
Rated
Heat
Input
Gas
Type
NL
I2L
DE
I2E
BE,FR
I2E+
G20
G25
G30
2.3749
mm
20
mbar
--
20
mbar
20
mbar
--
--
--
--
11.21
mbar
22.36
kW-hr.
2.3749
mm
--
25
mbar
--
--
16.19
mbar
22.36
kW-hr.
1.3970
mm
--
--
--
--
29 or 50
mbar
28-30, 37
or 50 mbar
26.2
mbar
22.59
kW-hr.
IMPORTANT
Additional electrical information is provided on the oven's serial plate, and on the wiring diagram inside the machinery
compartment.
5
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SECTION2-INSTALLATION
WARNING - For gas ovens, after any conversions, readjustments, or service work on the oven:
•
•
•
•
Perform a gas leak test.
Test for correct air supply.
Test for proper combustion and gas supply.
Check that the ventilation system is in operation.
WARNING
Keep the appliance area free and clear of combustibles.
WARNING
The oven must be installed on an even (level) non-flammable flooring and any adjacent walls must
be non-flammable. Recommended minimum clearances are specified in the Description section of
this Manual.
WARNING
Do not obstruct the flow of combustion and ventilation air to and from your oven. There must be no
obstructions around or underneath the oven. Constructional changes to the area where the oven is
installed shall not affect the air supply to the oven.
CAUTION
For additional installation information, contact your local Authorized Service Agent.
NOTE
There must be adequate clearance between the oven and combustible construction. Clearance
must also be provided for servicing and for proper operation.
NOTE
An electrical wiring diagram for the oven is located inside the machinery compartment.
NOTE
All aspects of the oven installation, including placement, utility connections, and ventilation requirements,
must conform with any applicable local, national, or international codes. These codes supersede the
requirements and guidelines provided in this manual.
NOTE
In the USA, the oven installation must conform with local codes. In the absence of local codes, gas oven
installations must conform with the National Fuel Gas Code, ANSI Z223.1. Installed ovens must be
electrically grounded in accordance with local codes, or in the absence of local codes, with the National
Electrical Code (NEC), or ANSI/NFPA70.
NOTE
In Canada, the oven installation must conform with local codes. In the absence of local codes, gas oven
installations must conform with the Natural Gas Installation Code, CAN/CGA-B149.1, or the Propane Gas
Installation Code, CAN/CGA-B149.2, as applicable. Installed ovens must be electrically grounded in
accordance with local codes, or in the absence of local codes, with the Canadian Electrical Code CSA C22.2.
NOTE
In Australia, the oven installation must conform with any requirements of the appropriate statutory authority.
Gas oven installtions must conform with AGA Codes AG311 and AG601.
NOTE
In CE countries, all aspects of the gas supply connection must comply with current IEC/CEE requirements and
with all applicable local, national, and international codes. In addition, four casters are provided to allow the oven
to be more easily moved to the installation location. These casters are intended to simplify pre-installation
movement only, and are NOT suitable for use as part of a CE oven installation. During the installation procedure,
the casters MUST be removed, so that the oven can be supported by the supplied 152mm adjustable legs.
6
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SECTION2-INSTALLATION
Figure 2-1 - Installation Kit
2
3
1
4a, 4b, 4c, 4d
8
12
16
14
13
15
6
11
5
10
7
9
I. INSTALLATION KIT - see Figure 2-1
Qty.
Single Double
Oven
1
Qty.
Qty.
Triple
Oven
1
4
1
--
Inc. with
domestic
ovens?
Inc. with
CE
ovens?
Yes
Yes
Yes
Yes
Item
1
Oven
1
Part No.
48605
Description
Top panel
Yes
Yes
Yes
Yes
2
3
4
1
4
4
1
4
3A80A8801
42893
Screw, pan head #10 x 2″
Base pad
4a
42890
17-1/2″ (445mm) leg extension, for single and
double ovens
4b
4c
4d
5
--
--
4
4
--
--
45360
45329
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
20-1/2″ (521mm) leg extension, optional
25-1/2″ (648mm) leg extension, optional
6″ (152mm) leg extension, for triple ovens
Caster, with flat plate and brake
--
--
4
44799
2
2
2
22290-0009
22290-0010
6
A/R
A/R
A/R
Yes
Caster, with flat plate (no brake)
NOTE: Domestic and standard export ovens include 2 braking casters (item 5) and 2 non-braking casters (Item 6). CE-approved
ovens include 4 non-braking casters (Item 6) SOLELY for the purpose of moving the oven to the installation location. Casters are
NOT suitable for use as part of CE oven installations. Refer to the notice on the preceding page.
7
8
9
4
1
4
1
4
1
22450-0028
21392-0004
220373
No
Yes
Yes
Yes
No
Leg, adjustable, 6″ (152mm)
Eyebolt, 3/4″
A/R
A/R
A/R
Yes
Hex bolt, 3/8″-16 x 1″
NOTE: CE-approved ovens include 32 hex bolts. Domestic and standard export ovens include 31 hex bolts and one eyebolt (item 8)
that acts as an anchor for the restraint cable (Item 12). CE ovens are mounted on legs (Item 7) and do not use a restraint cable.
10
11
12
13
32
32
1
32
32
1
32
32
1
21416-0001
21422-0001
22450-0228
22361-0001
Yes
Yes
Yes
Yes
Yes
Yes
No
Flat washer, 3/8″
Lockwasher, 3/8″
Restraint cable assembly
1
2
3
No
Gas hose, 3/4″ to 1/2″ Gas hose reducer
included with gas hose.
14
15
16
1
1
1
1
1
1
1
1
--
50236
1002040
46393
Yes
Yes
Yes
Yes
Yes
Yes
Owner's Operating and Installation Manual
Authorized Service Agency Listing
Lower shelf
7
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SECTION2-INSTALLATION
B. Recommendations
II. VENTILATION SYSTEM
NOTE THAT THE HOOD DIMENSIONS SHOWN IN FIGURE 2-
2ARERECOMMENDATIONSONLY. LOCAL, NATIONALAND
INTERNATIONAL CODES MUST BE FOLLOWED WHEN
INSTALLINGTHEVENTILATIONSYSTEM. ANYAPPLICABLE
CODESSUPERSEDETHERECOMMENDATIONSSHOWNIN
THISMANUAL.
IMPORTANT
Where national or local codes require the
installation of fire suppression equip-
ment or other supplementary equipment,
DO NOT mount the equipment directly to
the oven.
The rate of air flow exhausted through the ventilation system
may vary depending on the oven configuration and hood design.
Consult the hood manufacturer or ventilation engineer for these
specifications.
MOUNTING SUCH EQUIPMENT ON
THE OVEN MAY:
To avoid a negative pressure condition in the kitchen area,
return air must be brought back to replenish the air that was
exhausted. A negative pressure in the kitchen can cause heat-
related problems to the oven components as if there were no
ventilation at all. The best method of supplying return air is
through the heating, ventilation and air conditioning (HVAC)
system. Through the HVAC system, the air can be temperature-
controlled for summer and winter. Return air can also be
brought in directly from outside the building, but detrimental
effects can result from extreme seasonal hot and cold
temperatures from the outdoors.
•
•
•
VOID AGENCY CERTIFICATIONS
RESTRICT SERVICE ACCESS
LEAD TO INCREASED SERVICE EX-
PENSES FOR THE OWNER
A. Requirements
NOTE: Return air from the mechanically driven system must not
blow at the opening of the baking chamber. Poor oven baking
performance will result.
CAUTION
Gas oven installations REQUIRE a mechanically driven
ventilation system with electrical exhaust air sensing control.
C. Other ventilation concerns
A mechanically driven ventilation system is STRONGLY
RECOMMENDED for electric oven installations.
•
Special locations, conditions, or problems may require the
services of a ventilation engineer or specialist.
PROPER VENTILATION OF THE OVEN IS THE
RESPONSIBILITY OF THE OWNER.
•
•
Inadequate ventilation can inhibit oven performance.
It is recommended that the ventilation system and duct
work be checked at prevailing intervals as specified by the
hood manufacturer and/or HVAC engineer or specialist.
Fig. 2-2 - Ventilation System
12" (305mm)
minimum
12" (305mm)
minimum
8" (203mm)
minimum
1" (25mm)
minimum
2" (51mm)
minimum
8
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SECTION2-INSTALLATION
Figure 2-3 - Leg extension and casters installation
III. ASSEMBLY
A. Top Panel and Base Pad Assembly
Finished sides of
leg extension
face corner of
base pad
1. Install the four leg extensions onto the base pad using the
3/8"-16x1" screws, 3/8" flat washers, and 3/8" lockwashers
supplied in the Base Pad Kit. See Figure 2-3. Check that
the finished sides of each leg extension face OUTWARDS.
3/8" flat
washer
For domestic and standard export ovens:
One rear leg should be attached using three 3/8"-16 x 1"
screws and the 3/4" eyebolt, as shown in Figure 2-3. This
eyebolt acts as the anchor point for the restraint cable
assembly (see Part C, Restraint Cable Installation).
3/8" lock
washer
CE ovens
do not use
the
eyebolt.
3/8"-16 x 1"
hex screw
2. If your oven is equipped with the lower shelf, position it in
place as shown in Figure 2-3. Check that the lip on the shelf
faces DOWN. Seal joint between leg and shelf with NSF
listed silicone.
3/4" eyebolt
(inside corner
of one rear leg
extension
3. For domestic and standard export ovens:
only)
Install one caster onto each leg extension, as shown in
Figure 2-4. Use the 3/8"-16x1" screws, 3/8" flat washers,
and 3/8" lockwashers supplied in the Installation Kit. The
locking casters should be installed at the FRONT of the
oven. The non-locking casters should be installed at the
REAR of the oven.
Lower
shelf
Domestic and
standard export
ovens:
Locking casters -
FRONT of oven
For CE export ovens:
The Installation Kit includes four casters AND four 152mm
adjustable legs. The casters are provided to allow the oven
to be more easily moved to the installation location, and are
NOT suitable for use as part of the oven installation. Refer
to the notice at the beginning of this Section.
Non-locking casters -
REAR of oven
3/8" flat
washer
CE-approved
ovens:
After the oven is at the installation location, install one
152mm adjustable leg into the center hole on the bottom
of each leg extension, as shown in Figure 2-4.
3/8" lock
washer
152mm adjustable
leg MUST be used
for installation
3/8"-16 x 1"
hex screw
4. Install the lower oven cavity onto the base pad. See Fig. 2-4.
5. For single ovens ONLY, install the top panel using the
screws included in the base pad kit, as shown in Figure 2-
5. Then, skip ahead to Part C, Restraint Cable Installation.
Figure 2-5 - Top panel installation
NOTE: DO NOT install top panel onto double or triple ovens
until AFTER stacking the oven cavities. See Part B, Stacking.
For double or triple ovens, continue on to Part B, Stacking.
Note that the top panel should NOT be installed for double
and triple ovens until after stacking the oven cavities.
#10 x 2"
screws
Top
panel
Figure 2-4 - Base pad installation
Bottom oven
cavity
Assembled
base pad
9
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SECTION2-INSTALLATION
B. Stacking
1. Stack an oven cavity on top of the lower oven. Check the
following:
For single ovens, skip ahead to Part C, Restraint Cable
Installation.
•
All four sides of the lower lip (on the bottom edge of the
oven cavity) overlap the top of the lower oven.
IMPORTANT
Middleby Marshall STRONGLY RECOMMENDS that PS536GS
oven cavities be stacked using the following:
•
•
The oven is level.
The oven is firmly seated.
See Figure 2-6.
•
•
PS500 Series Stacking Lift Kit, P/N 30580
PS536 Stacking Hardware Kit, P/N 46494
2. For triple ovens, repeat Step 1 to install the top oven cavity.
Contact your Middleby Marshall Authorized Service Agent for
complete stacking instructions.
3. Install the top panel using the screws included in the base pad
kit, as shown in Figure 2-7.
Figure 2-6 - Stacking
Figure 2-7 - Top panel installation
#10 x 2"
screws
Top
panel
C. Restraint Cable Installation
Figure 2-8 - Installing the Restraint Cable
For CE-approved ovens, skip ahead to Part D, Conveyor
Installation.
Restraint cable
assembly
For domestic and standard export ovens, continue with this
Section to install the restraint cable.
3/8"-16 x 1"
eyebolt on
rear leg
Because domestic and standard export ovens are
equipped with casters, a restraint cable assembly must be
installed to limit the movement of the appliance without
depending on the connector and the quick disconnect
device or its associated piping. One end of the cable is
anchored to the eyebolt on one of the rear leg extensions,
while the other is anchored to the wall. See Figure 2-8.
extension
3/4” (19mm)
eyebolt
After connecting the restraint cable, move the oven to its
final location. Then, lock the two front casters.
Wall of
structure
10
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SECTION2-INSTALLATION
Figure 2-9 - Conveyor installation
D. ConveyorInstallation
1. Unfold the conveyor as shown in Figure 2-9. Then, begin
to slide the conveyor into the end of the oven. The conveyor
can only be installed from the end of the oven with the drive
motor.
Folded
frame
2. Continue moving the conveyor into the oven until the frame
protrudes equally from each end of the oven. Check that the
crumb tray supports located on the underside of the con-
veyor frame rest firmly against the lower end plugs, as
shown in Figure 2-10.
Idler end (with
belt tension
adjustment
screws)
3. When the conveyor is positioned properly, check for free-
dom of movement of the conveyor belt by pulling it for about
2-3 feet (0.6-1.0m) with your fingers. The drive and idler
shafts must rotate smoothly, and the belt must move freely
without rubbing on the inside of the oven.
4. Check the tension of the conveyor belt as shown in Figure
2-11. The belt should lift about 1" (25mm). DO NOT
OVERTIGHTEN THE CONVEYOR BELT.
NOTE:
If necessary, the belt tension can be adjusted by turning the
conveyor adjustment screws, located at the idler (non-
control) end of the conveyor. See Figure 2-11.
Drive end (with
drive sprocket)
Figure 2-10 - Conveyor placement
Figure 2-11 - Conveyor belt tension
Crumb tray
support
bracket
End plug
Conveyor
placed in
oven
1" (25mm)
vertical
deflection
Adjustment
screws (2) on
idler end of
conveyor
11
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SECTION2-INSTALLATION
5. If it is necessary to add or remove conveyor links to achieve
the correct tension, OR if it is necessary to reverse the
conveyor belt for correct orientation, the belt will need to be
removed from the conveyor frame. If this is necessary,
perform the following procedure:
E. FinalAssembly
6. Install the drive chain between the conveyor drive sprocket
and the motor sprocket. To install the chain, it will be
necessary to lift the drive end of the conveyor slightly.
7. Install the conveyor chain cover as shown in Figure 2-13.
Check that the chain cover does not bind on the conveyor
sprocket or drive shaft.
•
Remove the conveyor assembly from the oven and
place it flat on the floor.
•
Remove the master links using long-nose pliers.
Then, roll up the belt along the length of the conveyor
frame.
8. Install the crumb trays as shown in Figure 2-13.
9. Press the end stop down over the edge of the conveyor
frame at the exit end of the oven, as shown in Figure 2-13.
•
•
Add or remove belt links as necessary to achieve the
correct belt tension.
Replace the belt on the conveyor frame. Check that the
conveyor belt links are oriented as shown in Figure 2-
12, and that the smooth side of the conveyor belt faces
UP.
Figure 2-12 - Conveyor and master link orientation
Direction
of travel
CORRECT
master link
position
•
•
Connect the inside master links. Check that the links
are oriented as shown in Figure 2-12.
Connect the outside master links. Note that the
outside master links each have an open hook on one
side. This hook aligns with the hooks along the sides
of the other conveyor links. See Figure 2-12.
Incorrect
master link
position
•
Replace the conveyor into the oven.
Figure 2-13 - Final assembly
Press conveyor end stop
down over edge of
conveyor frame
Hang chain cover on
screws in control
compartment wall
Place inside edge
of tray on retainer
bracket
Swing outside
edge of tray up
and into place
12
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SECTION2-INSTALLATION
IV. ELECTRICAL SUPPLY
WARNING
The oven requires a ground connection to the oven ground
screw located in the electrical junction box. (The box is shown
in Figure 2-14.) The ground connection must comply with all
applicable local, national, and international codes. If necessary,
have the electrician supply the ground wire. Do NOT use the
wiring conduit or other piping for ground connections!
Authorized supplier personnel normally accomplish
the connections for the ventilation system, electric supply,
and gas supply, as arranged by the customer. Following
these connections, the factory-authorized installer can
perform the initial startup of the oven.
NOTE: The electric supply installation must satisfy the
requirements of the appropriate statutory authority, such as the
National Electrical Code (NEC), ANSI/NFPA70, (U.S.A.); the
Canadian Electrical Code, CSA C22.2; the Australian Code,
AG601; current IEC/CEE requirements (CE countries); or other
applicable regulations.
A. AdditionalInformation-GasOvens
All electric supply connections are made via the electrical
junction box on the rear of the oven, shown in Figure 2-14. The
power lines then connect to the oven circuits through safety
switches that interrupt electric power to the oven:
•
•
When the Control Compartment Access Panel is opened;
NOTE: All aspects of the electrical supply connection must
comply with all applicable local, national, and international
code requirements.
WhentheMachineryCompartmentAccessPanelisopened,
OR
•
When the rear panel is removed.
Check the oven serial plate before making any electric supply
connections. Electric supply connections must agree with data
on the oven serial plate. The location of the serial plate is shown
in Figure 1-1 (in Section 1, Description).
B. Connection
Refer to the wiring diagram inside the machinery compartment,
or in Section 5 of this Manual, to determine the correct
connections for the electrical supply lines. Connect the supply
as indicated on the wiring diagram.
A fused disconnect switch or a main circuit breaker (customer
furnished) MUST be installed in the electric supply line for each
ovencavity.Itisrecommendedthatthiscircuitbreaker/disconnect
have lockout/tagout capability. For CE installations, the circuit
breaker/disconnect must have a minimum of 3mm contact
separation breaking all poles of the supply.
If required by local, national or international codes, connect an
equipotential ground wire to the lug next to the
symbol
(shown in Figure 2-14). The equipotential ground connection
must meet all applicable national and local code requirements.
The supply conductors must comply with all applicable local,
national and international codes. Supply conductors must be
insulated copper wiring, #18 AWG (American Wire Gauge) or
equivalent. Additional wiring information is shown on the wiring
diagrams in Section 5, Electrical Wiring Diagrams and inside
the machinery compartment of the oven.
Figure 2-14 - Utility connection locations
33mm cutout for
electric utility
connection
1/2" NPT pipe for gas
utility connection
(fitted with 3/4" adapter
for use with supplied
3/4" dia. gas hose)
Equipotential
groundlug
Electrical
Junction Box
13
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SECTION2-INSTALLATION
NOTE:Certainsafetycoderequirementsexistfortheinstallation
of gas ovens; refer to the beginning of Section 2 for a list of the
installation standards. In addition:
V. GAS SUPPLY
CAUTION
•
In the USA, the installation must conform with local codes,
or in the absence of local codes, with the National Fuel Gas
Code, ANSI Z223.1.
DURINGPRESSURETESTINGNOTETHEFOLLOWING:
1.Theovenanditsindividualshutoffvalvemustbediscon-
nected from the gas supply piping system during any
pressuretestingofthatsystemattestpressureinexcess
of 1/2 psi (3.45 kPa).
•
In Canada, the installation must conform with local codes,
or in the absence of local codes, with the Natural Gas
Installation Code, CAN/CGA-B 149.1, or the Propane
Installation Code, CAN/CGA-B 149.2, as applicable.
2. The oven must be isolated from the gas supply piping
system by closing its individual manual shutoff valve
during any pressure testing of the gas supply piping
system at test pressure equal to or less than 1/2 psi (3.45
kPa).
•
•
In Australia, the installation must conform with AGA Codes
AG311 and AG601, and with any requirements of the
appropriate statutory authority.
In CE countries, the gas supply connection should be
according to EN-203 (gas appliance directive) and to
applicable ISO 228-1 or ISO 7-1 recommendations. All
aspects of the gas supply connection must comply with
current IEC/CEE requirements and with all applicable
local, national, and international codes.
3. If incoming pressure is over 14" W.C. (35mbar), a
separate regulator MUST be installed in the line BEFORE
the individual shutoff valve for the oven.
WARNING: To prevent damage to the control valve regu-
lator during initial turn- on of gas, it is very important to
open the manual shutoff valve very slowly.
•
For all ovens equipped with casters, the gas line connection
shall be made with:
Aftertheinitialgasturn-on,themanualshutoffvalvemust
remain open except during pressure testing as outlined
in the above steps or when necessary during service
maintenance.
-
A connector that complies with the Standard for
Connectors for Movable Gas Appliances, ANSI Z21.69
(in USA), or Connectors for Movable Gas Appliances,
CAN/CGA-6.16 (in Canada).
Check the oven’s gas supply requirements to determine the
typeofgastobeusedwiththeoven. Ifthegastyperequireddoes
NOT match the local supply:
A. GasUtilityRough-InRecommendations
The following gas system specifications are STRONGLY
RECOMMENDED. Deviating from these recommendations
may affect the baking performance of the oven.
•
For North American installations, a conversion kit is
supplied with the oven to allow operation using propane
gas. Refer to Part B, Gas Conversion, in this section.
Gas Meter - 650 cfh (307l/min) meter
•
For CE ovens, directions for converting the oven for use with
other gases are described in Part D.1, Preparation for Use
with Various Gases, in this section.
Gas Line
•
•
•
•
DEDICATED LINE from the gas meter to the oven
2" (50.8mm) pipe for natural gas
1-1/2" (38.1mm) pipe for propane
Maximum length: 200' (61m). Each 90° elbow equals 7'
(2.13m) of pipe.
If the installation will use the supplied gas hose, be sure that
the1/2"to3/4"gaslinefittingisattached. Refertotheinstructions
in the gas hose package. One gas line connection method is
shown in Figure 2-15; however, compliance with the applicable
standards and regulations is mandatory.
B. GasConversion
Inlet and regulated gas pressures can be measured using a
“U” tube manometer at the tap locations shown in Figures 2-15
and 2-16.
Ovens are shipped from the factory configured for use with
natural gas. If permitted by local, national and international
codes, the oven may be converted to propane gas operation
using a Gas Conversion Kit that is supplied with the oven. Gas
orifice sizes supplied with the Kit match those shown in Tables
1-4 and 1-5 in the Description section of this Manual.
Figure 2-15 - Flexible Gas Hose Installation
Where permitted by local and national codes, it is possible to
convert ovens from natural to propane gas, or from propane to
natural gas, after the oven has been installed. Gas Conversion
Kits are available from Middleby Marshall for this purpose.
1/2" gas
pipenipple
3/4"-1/2"
gas pipe
To Gas
reducer
Supply
Pipe
C. Connection
3/4" gas
pipenipple
WARNING
Some procedures in this section may require conver-
sions, readjustments, or service on the oven's gas
system. Beforeperformingtheseprocedures,check thatthe
main gas supply valve and the circuit breaker/fused discon-
nect are in the OFF ("O") position. After completing these
procedures, perform a gas leak test before operating the
oven.
1/2" gas line
tee with
pressure tap
90°
Elbow
Full-Flow
Gas
Shutoff
Valve
CAUTION
The terms of the oven's warranty require all start-ups, conver-
sions and service work to be performed by a Middleby Marshall
AuthorizedServiceAgent. Theinstallation,start-upandchanges
required when changing from one gas type to another can be
performed ONLY by a certified professional.
Individual gas
connection for
each oven
cavity
Flexible
Gas Hose
Quick-
disconnect
device
14
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SECTION2-INSTALLATION
1. Checking the Gas Supply (Inlet) Pressure
b. Volumetric Method
a. With the main gas supply valve closed and the circuit
breaker/fused disconnect in the OFF ("O") position, open
the inlet pressure tap shown in Figure 2-16 and attach a
manometer to the tap.
1. Determine the time of 0.1m3 (100 liters) of gas usage
as follows.
NB (Rated input in kW)
Consumption (m3/hr.) =
HuB (Heat [Calorific] value
b. Depress the safety switches to allow the oven to operate.
c. Open the main gas supply valve. Switch the circuit breaker/
fused disconnect to the ON ("I") position.
of gas in kW/m3)
6
Time (in minutes) of
0.1m3 of gas usage
=
d. Start the oven according the directions in the Operation
section of this Manual. Adjust the temperature controller to
the maximum setting (316°C).
Consumption
e. Measure the supply (inlet) pressure.
2. Check that the main gas supply valve and the circuit
breaker/fused disconnect are in the OFF ("O") position.
f. Switch the oven off. Close the main gas supply valve, and
switch the circuit breaker/fused disconnect to the OFF ("O")
position. Remove the manometer, and close the inlet tap.
3. Remove the cap screw from the pressure adjustment
screw (governor) on the gas control valve.
g. Compare the measured supply (inlet) pressure to the
nominal pressures shown in Table 1-5 (in the Description
section of this Manual).
4. Depress the safety switches to allow the oven to
operate.
5. Open the main gas supply valve. Switch the circuit
breaker/fused disconnect to the ON ("I") position.
If the supply pressure is lower or higher than the nominal
pressure, the reason should be investigated and the gas
supplier contacted.
6. Start the oven according the directions in the Operation
sectionofthisManual. Adjustthetemperaturecontroller
to the maximum setting (316°C).
For natural gas ovens, if the measured supply pressure is lower
than 0.247psi, or higher than 0.363psi, contact the gas supplier.
DO NOT OPERATE THE OVEN or adjust the oven controls.
7. Adjust the pressure adjustment screw as necessary
to match the calculated volume using the time (in
minutes) of 0.1m3 of gas usage. Turning the
adjustment screw clockwise increases the flow, while
turning it counterclockwise reduces the flow.
2. Adjusting the Orifice (Manifold) Pressure and Heat Input
To use the orifice pressure method, you must know the specific
gas type and quality used. If using the orifice pressure method,
you should double-check the input using the volumetric method.
8. Record the reading obtained from the gas meter and
calculate the obtained gas flow. Compare this value
to the information in Tables 1-4 and 1-5 in the
Description section of this Manual.
To use the volumetric method, you must know the heat value
(HuB) of the gas used. This information is available from your
gas supplier.
9. Switch the oven off. Close the main gas supply valve,
and switch the circuit breaker/fused disconnect to the
OFF ("O") position. Replace the cap screw onto the
gas control valve.
During these measurements, do not operate any other
appliances that use the same gas meter as the oven.
a. Orifice (Manifold) Pressure Method
1. With the main gas supply valve closed and the circuit
breaker/fused disconnect in the OFF ("O") position,
open the manifold pressure tap shown in Figure 2-16
and attach a manometer to the tap.
Figure 2-16 - Gas Control Valve
2. Remove the cap screw from the pressure adjustment
screw (governor) on the gas control valve.
3. Depress the safety switches to allow the oven to
operate.
4. Open the main gas supply valve. Switch the circuit
breaker/fused disconnect to the ON ("I") position.
5. Start the oven according the directions in the Operation
sectionofthisManual. Adjustthetemperaturecontroller
to the maximum setting (316°C).
6. Adjust the pressure adjustment screw as necessary
to match the correct pressure for the oven's specific
gas type. Refer to Table 1-5 in the Description section
ofthisManual. Turningtheadjustmentscrewclockwise
increases the flow, while turning it counterclockwise
reduces the flow.
Manifold
pressure tap
(whereregulated
gas pressure is
measured)
7. Switch the oven off. Close the main gas supply valve,
and switch the circuit breaker/fused disconnect to the
OFF ("O") position. Remove the manometer, and
close the manifold pressure tap.
Pressure adjustment
screw (under cap)
15
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SECTION3-OPERATION
E
D
B
A
C
I. LOCATION AND DESCRIPTION OF CONTROLS
A.
"BLOWER" Switch: Turns the blowers and
cooling fans on and off. The HEAT Switch has
no effect unless the BLOWER Switch is in the
“ON” position.
Digital Temperature Controller: Continuously
monitors the oven temperature. Settings on the
Digital Temperture Controller control the activa-
tion of the burner. Keypad controls allow the
operator to select the cooking temperature and
monitor oven operation.
E.
B.
"HEAT" Switch: Allows the burner to activate.
Activation is determined by the settings on the
Digital Temperature Controller.
NOT SHOWN:
F. Machinery and Control Compartment Safety Switches:
Disconnect electrical power to the controls and blowers
when EITHER the machinery compartment door OR the
control compartment door is opened. The doors should
only be opened by authorized service personnel.
C.
D.
"CONVEYOR"Switch: Turnstheconveyordrive
motor on and off.
Conveyor Speed Controller: Adjusts and dis-
plays the bake time. Single-belt ovens have one
controller. Split belt ovens have one controller
for each conveyor belt, labeled "FRONT" and
"BACK."
16
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SECTION3-OPERATION
7. Wait for the oven to heat to the setpoint temperature. Higher
setpoint temperatures will require a longer wait. The oven
can reach a temperature of 500°F (232°C) in approximately
5 minutes.
II. NORMAL OPERATION - STEP-BY-STEP
A. DAILYSTARTUPPROCEDURE
1. Check that the circuit breaker/fused disconnect is in the on
position. Check that the window is closed.
8. (Optional)PresstheTem-
perature ( ) key to show
2. Turn the "BLOWER" (
)
the Actual Temperature
wait
switch to the “ON” ("I")
position.
in the display, and wait
for the "ACTUAL TEMP"
for
light to turn on. This al-
lows you to monitor the
oven temperature as it
rises to the setpoint.
3. Turn the "CONVEYOR"
( ) switch to the “ON”
("I") position.
9. Allow the oven to preheat for 10 minutes after it has reached
the set point temperature.
B. DAILYSHUTDOWNPROCEDURE
1. Turnthe"HEAT"( )and
"BLOWER" ( ) swit-
ches to the "OFF" ("O")
4. If necessary, adjust the
conveyor speed setting
by pressing the
or
position. Note that the
+
or
pushbuttons on the con-
veyor speed controller to
change the displayed
bake time.
blowers will remain in op-
eration until the oven has
cooled to below 200°F
(93°C).
5. Adjust the temperature
controller to a desired set
temperature, if neces-
sary.
2. Make certain that there
are no products left on
the conveyor inside the
oven. Turn the "CON-
wait
for
+
•
Press the Set Point
and Unlock keys at
the same time. Wait
forthe"SETPT"light
to turn on.
VEYOR" ( ) switch to
the "OFF" ("O") position.
3. Open the window to allow the oven to cool faster.
•
Press the Up Arrow
and Down Arrow
Keys as necessary
to adjust the set-
point.
4. After the oven has cooled and the blowers have turned off,
switch the circuit breaker/fused disconnect to the off posi-
tion.
or
IMPORTANT
On gas ovens, if the "HEAT ON" light will not illuminate, OR
if the oven does not heat, the gas burner may not have lit.
Turn the "HEAT" ( ), "BLOWER" ( ), and "CONVEYOR"
6. Turn the "HEAT" (
)
(
) switches to the "OFF" ("O") position. Wait for AT
switch to the "ON" ("I")
position, and wait for the
"HEAT ON" light to turn
on.
LEAST FIVE MINUTES before restarting the oven. Then,
repeat the Daily Startup procedure.
CAUTION
In case of power failure, turn all switches to the “OFF” ("O")
position, open the oven window, and remove the product.
After the power has been restored, perform the normal
startup procedure. IF THE OVEN WAS SWITCHED OFF
FOR LESS THAN 5 MINUTES, WAIT FOR AT LEAST FIVE
MINUTES BEFORE RESTARTING THE OVEN.
wait
for
Theburnerwillnotoperateandgaswillnotflowthrough
theburnerwithoutelectricpower. Noattemptshouldbe
made to operate the oven during a power failure.
17
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SECTION3-OPERATION
III. QUICK REFERENCE: DIGITAL TEMPERATURE CONTROLLER
Display
"HEAT ON"
Shows the Set Point
or the Actual Tem-
perature in degrees
Fahrenheit (F) or
Celsius (C).
Light
Lights when the
burner is in
operation.
"SP LOCK"
Light
Lights when the
set point is locked
out from changes.
This setting can
only be changed by
service personnel.
"SET PT"
(setpoint)
Light
Lights when the
set point is shown
in the display.
OVERTEMP
Light
Lights when the oven
temperature is
greater than 650°F
(343°C). Refer to
Quick Reference:
Troubleshooting in
this section.
"ACTUAL
TEMP" Light
Lights when the
Actual Tempera-
ture is shown in
the display.
Service Key
Serviceuse
only.
Temperature
Key
Press this key once
to view the Actual
Temperature in the
Display.
Set Point Key
Press this key
together with the
Unlock Key to allow
the Set Point to be
changed.
Unlock Key
Press this key
together with the Set
Point Key to allow the
Set Point to be
Up Arrow and Down
Arrow Keys
Press these keys to
Changes can only be
made for 60 sec-
onds.
adjust the Set Point up or
down. If the Set Point will
not change, refer to Set
Point Key and Unlock Key
in this section.
changed. Changes
can only be made for
60 seconds.
18
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SECTION4-MAINTENANCE
WARNING
Before ANY cleaning or servicing of the oven, perform the following procedure:
1. Switch off the oven and allow it to cool. Do NOT service the oven while it is warm.
2. Turn the full-flow gas safety valve to the off position.
3. Turn off the electric supply circuit breaker(s) and disconnect the electric supply to the oven.
4. If it is necessary to move a gas oven for cleaning or servicing, disconnect the gas supply before moving the oven.
When all cleaning and servicing is complete:
4. Turn on the full-flow gas safety valve. Test the gas line
connections for leaks using approved leak test sub-
stances or thick soap suds.
5. Turn on the electric supply circuit breaker(s).
6. Perform the normal startup procedure.
1. If the oven was moved for servicing, return the oven to its
original location.
2. Reconnect the gas supply.
3. Reconnect the electrical supply.
WARNING
Possibility of injury from moving parts and electrical shock exists in this oven. Switch off and lockout/tagout the electric
supply BEFORE beginning to disassemble, clean, or service any oven. Never disassemble or clean an oven with the
BLOWER ( ) switch or any other circuit of the oven switched on.
CAUTION
NEVER use a water hose or pressurized steam-cleaning equipment when cleaning this oven. To avoid saturating the oven
insulation, DO NOT use excessive amounts of water. DO NOT use a caustic oven cleaner, which can damage the bake
chamber surfaces.
NOTE
ANY replacement parts that require access to the interior of the oven may ONLY be replaced by a Middleby Marshall Authorized
Service Agent. It is also strongly recommended that the 3-Month Maintenance and 6-Month Maintenance procedures in this
section be performed ONLY by a Middleby Marshall Authorized Service Agent.
Figure 4-1 -Cooling Vents and Grills
I. MAINTENANCE - DAILY
A. Check that the oven is cool and the power is disconnected,
as described in the warning at the beginning of this Section.
B. Clean ALL of the cooling fan grills and vent openings with a
stiff nylon brush. Refer to Figure 4-1 for the locations of the
grills and vents.
C. Clean the outside of the oven with a soft cloth and mild
detergent.
D. Check that ALL cooling fans are operating properly.
Vents on
front panel
of oven
CAUTION
If a cooling fan is not operating correctly, it must be replaced
IMMEDIATELY. Operating the oven without adequate
cooling can seriously damage the oven's internal compo-
nents.
E. Clean the conveyor belts with a stiff nylon brush. This is
more easily accomplished by allowing the conveyor to run
while you stand at the exit end of the conveyor. Then, brush
the crumbs off the conveyor as it moves.
F. Remove and clean the crumb trays. If necessary, refer to
Figure 2-13 (in Section 2, Installation) when replacing the
crumb trays into the oven.
G. Clean the window in place.
Vents on rear
of control
compartment
door
Fan grills (2) on rear
of oven and control
compartment
Vent (1) on rear
of machinery
compartment
19
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SECTION4-MAINTENANCE
Figure 4-2 - Removing Air Fingers and Plates
II. MAINTENANCE - MONTHLY
A. Check that the oven is cool and the power is disconnected,
as described in the warning at the beginning of this Section.
B. Refer to Part D, Conveyor Installation, in the Installation
section of this Manual. Then, remove the following compo-
nents from the oven:
•
•
•
•
•
•
Conveyor end stop
Crumb trays
Chain cover
Drive chain
End plugs
Conveyor assembly
C. Slide the air fingers and blank plates out of the oven, as
shown in Figure 4-2. AS EACH FINGER OR PLATE IS
REMOVED, WRITE A "LOCATION CODE" ON IT WITH A
MARKER to make sure that it can be reinstalled correctly.
Example of markings:
(Top Row)
(Bottom Row)
T1 T2 T3 T4
B1 B2 B3 B4
D. Disassemble the air fingers. See Figure 4-3. AS EACH
FINGER IS DISASSEMBLED, WRITE THE "LOCATION
CODE"FORTHEFINGERONALLTHREEOFITSPIECES.
This will help you in correctly reassembling the air fingers.
Figure 4-3 - Disassembling the Air Fingers
CAUTION
Incorrect reassembly of the air fingers will change the
baking properties of the oven.
Outer Plate
E. Clean the air finger components and the interior of the
baking chamber using a vacuum cleaner and a damp cloth.
Refer to the boxed warnings at the beginning of this Section
for cleaning precautions.
Inner plate
Manifold
F. Reassemble the air fingers. Then, replace them in the
oven, using the "location code" as a guide.
G. Install the end plugs on the oven. Then, reinstall the
conveyor.
I.
Reattach the drive chain. Replace the chain cover.
J. Check the tension of the conveyor belt as shown in Figure
2-11 (in Section 2, Installation). The belt should lift about
1" (25mm). If necessary, adjust the belt tension using the
procedure in Part D (Conveyor Installation) in the Installa-
tion section of this Manual.
K. Replace all components onto the oven.
III. MAINTENANCE - EVERY 3 MONTHS
A. Check that the oven is cool and the power is disconnected,
as described in the warning at the beginning of this Section.
B. Open the machinery compartment access panel. Vacuum
the inside of the compartment using a shop vacuum.
C. Tighten all electrical control terminal screws.
D. Split Belt Disassembly and Cleaning
1. Refer to Part D, Conveyor Installation, in the Installa-
tion section of this Manual. Then, remove the following
components from the oven:
•
•
•
•
•
•
Conveyor end stop
Crumb trays
Chain cover
Drive chains
End plugs
Conveyor assembly
20
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SECTION4-MAINTENANCE
2. Remove the master links from each conveyor belt.
Then, roll the belts up along the length of the conveyor
to remove them from the frame.
Figure 4-4 - Disassembling the idler shaft
3. Remove the two conveyor adjustment screws from the
idler end of the conveyor frame, as shown in Figure 4-
4.
Disassemble,
clean, and
lubricate shafts
4. Remove the idler shaft assembly from the conveyor.
5. Pull apart the two sections of the idler shaft.
Bronze
washer
6. Clean the shafts thoroughly using a rag. Then, lubri-
cate both the extended shaft and the interior of the
hollow shaft using a light food-grade lubricant. DO
NOT lubricate the shafts using WD40 or a similar
product. This can cause the shafts to wear rapidly.
7. Before reassembling the shafts into the conveyor
frame, check that they are oriented properly.
Remove
8. Reassemble the idler shaft into the conveyor. Make
sure that the bronze washer is in place between the
two sections of the shaft. See Figure 4-4.
idler
shaft
assembly
Remove
adjustment
screws
9. Replace the conveyor adjustment screws as shown in
Figure 4-4. To allow the conveyor belt to be reinstalled
later, do not tighten the screws at this time.
Figure 4-5 - Drive shaft configurations
10. Loosen the set screw on both of the conveyor drive
sprockets. Then, remove the sprockets from the shaft.
Flangebearing
(used with high-
speed conveyors)
Bronze bushing with
spacer (used with
standard conveyors)
11. Check the conveyor configuration as follows:
•
High-speed conveyors are equipped with large
flange bearings at both ends of the shaft, as
shown in Figure 4-5. For these conveyors, re-
move the two screws that hold each bearing to the
conveyor frame. With the screws removed, lift the
end of the shaft at the front of the oven, and pull the
entire assembly free of the conveyor frame.
•
Standard conveyors are equipped with bronze
bushings mounted on spacers at both ends of the
shaft, as shown in Figure 4-5. For these convey-
ors, remove the two screws that hold the bracket
to the conveyor frame. With the screws removed,
lift the end of the shaft at the front of the oven, and
pull the entire assembly free of the conveyor
frame. The brackets will be removed along with
the drive shaft assembly.
Figure 4-6 - Disassembling the drive shaft
Disassemble,
clean, and
lubricate shafts
12. Disassemble and lubricate the two sections of the
drive shaft as described for the idler shaft, above.
13. Before reassembling the shafts into the conveyor
frame, check that they are oriented properly.
14. Reassemble the drive shaft into the conveyor. Make
sure that the bronze washer is in place between the
two sections of the shaft. See Figure 4-6.
15. Replace the drive sprockets. Reassemble the belts
and master links onto the conveyor.
16. Reinstall the end plugs and conveyor onto the oven.
17. Reattach the drive chains. Replace the chain cover.
Flangebearing
shown (used with
high-speed
conveyors)
18 Check the tension of the conveyor belt as shown in
Figure 2-11 (in Section 2, Installation). The belt should
lift about 1" (25mm). If necessary, adjust the belt
tension by turning the conveyor adjustment screws.
19. Replace all components onto the oven.
Loosen set
screws and
remove drive
sprockets
Remove 2 screws and nuts per
side to free bearings/brackets
21
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E. Blower Belt
1. Remove the six screws shown in Figure 4-7. Then,
remove the rear panel from the oven.
Figure 4-7 - Rear panel access
2. Check the blower belt for the proper 1/4" (6mm) deflec-
tion at the center, and for cracking or excessive wear.
See Figure 4-7. Overtightening the belt will cause
premature bearing failure and possible vibrations. A
loose belt may also cause vibrations.
3. If necessary, adjust the tension of the belt by loosening
the four motor mounting bolts. Reposition the motor
as neccessary until the correct 1/4" (6mm) deflection
is reached, then tighten the bolts.
F. Lubricating the Blower Fan Bearings
Remove six (6)
screws to remove
rearpanel
1. Use a grease gun to lubricate the main blower fan
shaft bearings, as shown in Figure 4-7.
When lubricating the bearings:
Bearings
(2 total)
• Use a high-quality NLGI #2, lithium soap grease with
petroleum oil, such as Middleby P/N 17110-0015.
• Add the grease slowly until a small bead of grease
is present at the seals. AVOID OVERGREASING.
Excessive greasing may cause harm to the bearing.
Grease fitting
(1 per
bearing)
2. Manually turn the blower shaft by pulling on the belt to
purge the grease. Wipe off any excess grease.
Blowerbelt
3. Replace the rear panel onto the oven.
Blower motor
IV. MAINTENANCE - EVERY 6 MONTHS
A. Check that the oven is cool and the power is disconnected, as
described in the warning at the beginning of this Section.
Loosen four (4) screws to adjust
motor position and belt tension
B. Check for excessive wear on the conveyor drive motor
brushes. The brushes should be replaced if they have
worn to less than 1/4" (6mm) in length. Be sure to replace
the brushes in exactly the same position.
C. For gas ovens, inspect and clean the burner nozzle and the
spark electrode assembly.
D. Check the conveyor drive shaft bushings and spacers.
Replace the components if they are worn.
22
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SECTION5-PARTSLIST
SECTION 5 - PARTS LIST
4
1
2
5
3
7
8
6
9
10
13
12
11
16
17
15
14
I. KEY SPARE PARTS KIT
ITEM QTY.
P/N
DESCRIPTION
1
2
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
47321
51067
30153
37337
33984
50517
44687
33983
36451
97525
37498
48455
50249
41647
31651
50239
50240
DIGITALTEMPERATURECONTROLLER
CONVEYORDRIVEMOTORW/PICKUPASSY.
DRIVE MOTOR BRUSHES
3
4
KIT, CONVEYOR SPEED CONTROLER
KIT, THERMOCOUPLE 6″
5
6
BELT, BLOWER
7
MOTOR, BLOWER, 208/230V, 1/2HP
HIGH LIMIT CONTROL MODULE, 240V
COOLINGFAN(BACKWALL)
COOLINGFAN(CONTROLCOMPARTMENT)
AIRSWITCH
8
9
10
11
12
13
14
15
16
17
IGNITOR
COMBINATIONGASCONTROLVALVE(SAFETYREGULATOR)
MODULATINGGASVALVE,M420,1/2″
AMPLIFIERBOARD
IGNITIONMODULE
IGNITION CABLE, 25″
23
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II. INSTALLATION KIT
QTY.
QTY.
QTY.
ITEM SINGLEOVEN
DOUBLEOVEN TRIPLEOVEN
P/N
48605
DESCRIPTION
1
2
1
2
1
4
1
4
TOP PANEL
3A80A8801
42893
SCREW, PAN HEAD #10 x 2"
3
1
1
1
BASEPAD
4a
4b
4c
4d
5
4
4
--
--
--
4
42890
17-1/2" (445mm) LEG EXTENSION, FOR SINGLE AND DOUBLE OVENS
20-1/2" (521mm) LEG EXTENSION, OPTIONAL
25-1/2" (648mm) LEG EXTENSION, OPTIONAL
6" (152mm) LEG EXTENSION, FOR TRIPLE OVENS
CASTER, WITH FLAT PLATE AND BRAKE
CASTER, WITH FLAT PLATE (NO BRAKE)
EYEBOLT,3/4"
--
--
--
2
4
45360
4
45329
--
2
44799
2
22290-0009
22290-0010
21392-0004
220373
6
2
2
2
7
1
1
1
8
31
32
32
1
31
32
32
1
31
32
32
1
HEX BOLT, 3/8"-16 x 1"
9
21416-0001
21422-0001
22450-0228
22361-0001
50236
FLATWASHER, 3/8"
10
11
12
13
14
15
16
LOCKWASHER, 3/8"
RESTRAINTCABLEASSEMBLY
GAS HOSE, 3/4″ to 1/2″ Gas hose reducer included with gas hose.
OWNER'S OPERATING MANUAL, PS536 GAS OVENS
MIDDLEBY MARSHALL AUTHORIZED SERVICE AGENCY LISTING
LOWER SHELF
1
2
3
1
1
1
1
1
1
1002040
46393
1
1
--
3
1
2
50276
KIT, LP
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III. PANELS, END PLUGS AND WINDOW
ITEM QTY.
P/N
50172
DESCRIPTION
ITEM QTY.
P/N
47633
DESCRIPTION
1
2
1
1
1
2
1
1
1
2
1
1
2
1
WINDOW SHROUD
13
14
15
16
17
1
1
1
1
1
BACK WALL
22500-0021
48437
NAMEPLATE,"MIDDLEBYMARSHALL"
HEATGUARDPLATE
36451
COOLINGFAN
3
31497
FINGER GUARD, COOLING FAN
CHAIN COVER, UPPER
4
30927
BUMPER
See pp. 36-39
49938
5
48512
ASSEMBLY, WINDOW (INC. ITEMS 6-7)
WINDOW FRAME WITH HANDLE
WINDOW GLASS, PRE-CUT
PIVOTSCREW
DOOR, CONTROL COMPARTMENT-FOR
OVENS WITH RIGHT-SIDE CONTROLS
6
47611
18
1
48687
DOOR, MACHINERY COMPARTMENT-FOR
LEFT-SIDE
7
47837
8
34121-0003
49920
19a
19b
20
2
2
2
8
8
43252
43252
42771
36452
45449
END PLUG, TOP
9
WINDOWLATCHASSEMBLY
SPACER BLOCK
END PLUG, BOTTOM
SLIDE, OUTER SIDE
WING NUT, PLASTIC
BRACKET, END PLUG MOUNTING
10
11
12
49921
18A1S19
48605
SCREW, HEX HD 1/4"-20 X 1"
TOP PANEL
21
22
IIIa. PANELS, END PLUGS WITHOUT WINDOW
ITEM QTY.
P/N
22500-0021
18A1S19
48605
DESCRIPTION
ITEM QTY.
P/N
DESCRIPTION
2
11
12
13
14
15
16
17a
1
2
1
1
1
1
1
1
NAMEPLATE,"MIDDLEBYMARSHALL"
SCREW, HEX HD 1/4"-20 X 1"
TOP PANEL
17b
18a
18b
1
1
1
Not available
DOOR, CONTROL COMPARTMENT-FOR
OVENS WITH LEFT-SIDE CONTROLS
48687
DOOR, MACHINERY COMPARTMENT-FOR
OVENS WITH RIGHT-SIDE CONTROLS
47633
BACK WALL
Not available
DOOR, MACHINERY COMPARTMENT-FOR
OVENS WITH LEFT-SIDE CONTROLS
36451
COOLINGFAN
19a
19b
20
2
2
2
8
8
43252
43252
42771
36452
45449
END PLUG, TOP
31497
FINGER GUARD, COOLING FAN
CHAIN COVER, UPPER
END PLUG, BOTTOM
SLIDE, OUTER SIDE
WING NUT, PLASTIC
BRACKET, END PLUG MOUNTING
See pp. 36-39
49938
DOOR, CONTROL COMPARTMENT-FOR
OVENS WITH RIGHT-SIDE CONTROLS
21
22
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IV. CONTROL COMPARTMENT
QTY.
QTY.
QTY.
QTY.
ITEM
SINGLE BELT SPLIT BELT
P/N
DESCRIPTION
ITEM
SINGLE BELT SPLIT BELT
P/N
DESCRIPTION
1
1
1
47321
DIGITALTEMPERATURE
CONTROLLER
12
1
1
1
1
35145
RESET SWITCH, HIGH LIMIT
13
31504
TRANSFORMER, 230V PRI : 120V
SEC, 200VA
2
3
1
1
1
2
48511
37337
DECAL, CONTROL PANEL
KIT, CONVEYOR SPEED CON-
TROLLER WITH DIGITAL DISPLAY
(INC. ITEM 3a)
14
15
16
17
18
19
20
1
2
1
1
1
1
1
1
2
1
1
1
1
1
37498
31047
97525
AIRSWITCH
TERMINAL BLOCK, 8-POLE
COOLING FAN, 230V
3a
4
1
3
2
3
37503
46521
DIGITALDISPLAYONLY
27470-0004 FINGER GUARD, COOLING FAN
F716A8701 GROUND LUG
KIT, SELECTOR SWITCH WITH
KNOB AND CONTACT BLOCK
5
6
7
1
2
2
2
2
2
48635
46831
45036
CIRCUIT BREAKER, 0.3A (DRIVE
MOTORS)
44390
49977
TERMINAL BLOCK, 3-POLE
COVERPLATE,TERMINALBLOCK
ACCESS
CIRCUIT BREAKER, 8A (BLOWER
MOTORS)
21
21a
22
1
1
1
1
2
2
1
1
51067
50163
MOTOR,CONVEYORDRIVE
PICKUP
CIRCUITBREAKER,3A(CONTROL
CIRCUIT)
8
1
1
2
1
1
1
2
1
28021-0047 SAFETYSWITCH
28041-0011 CONTACTOR
33812-1
49938
KIT, THERMOCOUPLE
9
23
DOOR,CONTROLCOMPARTMENT,
FOR RIGHT-SIDE
10
11
33363
33983
END STOP, CONTACTOR
24
1
1
33813
RFI FILTER
HIGH LIMIT CONTROL MODULE,
240V
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V. MACHINERY COMPARTMENT AND GAS TRAIN
ITEM QTY.
P/N
DESCRIPTION
ITEM QTY.
P/N
DESCRIPTION
1
1
27470-0004
FINGER GUARD
16a
3
44984
ORIFICE, MAIN, NATURAL GAS 0.0935"
(2.3749mm, #42 DRILL)
NOTE: The oven does NOT have a cooling fan
in this location. The opening provides passive
cooling only.
16b
3
47320
ORIFICE,MAIN,PROPANE0.0595"(1.5113mm,
#53 DRILL)
2
3
1
1
1
1
1
1
1
2
1
31047
32108
TERMINAL BLOCK, 8-POLE
TRANSFORMER, 240V PRI : 24V SEC, 65VA
SAFETYSWITCH
17
18
1
1
33812-1
48687
KIT, THERMOCOUPLE
DOOR, MACHINERY COMPARTMENT-FOR
LEFT-SIDE
4
28021-0047
45644
19
20
21
22
23
24
1
1
1
3
1
1
48489
49955
47654
44983
48455
50240
ASSEMBLY, BURNER TUBES
HOUSING, INSHOT BURNERS
COVER PLATE, INSHOT BURNER HOUSING
BURNER, INSHOT
5
CIRCUIT BREAKER, 1A
6
41872
TRANSFORMER, 240V PRI : 24V SEC, 25VA
AMPLIFIERBOARD
7
31651
8
50239
IGNITIONMODULE
IGNITOR
9
23051-0003
52291
UNION, 1/2" PIPE
IGNITION CABLE, 25" (635mm)
10
COMBINATION GAS CONTROL VALVE
(SAFETYREGULATOR)
25
1
50276
KIT, LP
11
12
13
14
15
1
A/R
2
41647
48740
44888
49940
30002
MODULATINGGASVALVE,M420,1/2"
TUBE, ALUMINUM, 1/4" (6.35mm) O.D. (BULK)
COMPRESSION FITTING, 1/4" TUBE
MANIFOLD
NOTSHOWN:
--
1
49951
49948
ORIFICE, BYPASS, NATURAL GAS 0.0810"
(2.0574mm, #46 DRILL)
1
--
1
ORIFICE, BYPASS, PROPANE 0.0520"
(1.3208mm, #55 DRILL)
2
TAP PLUG
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VI. REAR COMPARTMENT AND BLOWERS
ITEM QTY.
P/N
DESCRIPTION
ITEM QTY.
P/N
DESCRIPTION
1
2
1
42951
INLET RING
11
12
13
14
4
4
4
1
A11687
SCREW, HEX CAP HEAD 5/16"-18 X 7/8"
2a
42752
BLOWER WHEEL, RIGHT (VIEWED FROM
REAR OF OVEN)
B301A8847
A3682
FLAT WASHER, 5/16"
LOCK WASHER, 5/16"
2b
1
42753
BLOWERWHEEL,LEFT(VIEWEDFROMREAR
OFOVEN)
50256
KIT, RPM, (50/60Hz) CONTAINS SHEAVE
(50260) WITH BUSHING (50259)
3
4
5
2
2
2
42999
RETAINER, TEFLON SEAL
TEFLON SEAL
15
16
17
18
19
20
1
1
1
1
1
1
50224
50517
PULLEY, BLOWER SHAFT
BELT, (50/60Hz)
35121-0045
22072-0025
BEARING, 5/8" BORE WITH STANDARD
GREASE
28021-0061
47633
SAFETYSWITCH
--
6
7
--
2
2
17110-0015
50160
GREASE,MMSTANDARDCARTRIDGE
GASKET,BEARING
BACK WALL
36451
COOLINGFAN
50151
BLOWERSHAFT
31497
FINGER GUARD, COOLING FAN
8
9
1
1
1
44748
44687
44688
COUPLING, BLOWER SHAFT
MOTOR, BLOWER, 208/230V, 1/2HP
PLATE,MOTORMOUNTING
10
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VII. SINGLE-BELT CONVEYORS
P/N - 60"
P/N - 56"
P/N - 76"
P/N - 60"
P/N - 56"
P/N - 76"
ITEM QTY. CONVEYOR CONVEYOR CONVEYOR
DESCRIPTION
ITEM QTY. CONVEYOR CONVEYOR CONVEYOR
DESCRIPTION
1
2
1
1
48847
< - - - -
48847
48797
48790
- - - - >
FRAME,DRIVESIDE
23
1
< - - - -
51067
- - - - >
ASSEMBLY, CONVEYOR MO-
TORANDPICKUP(INC.ITEM23a)
ASSEMBLY,STANDARDDRIVE
SHAFT(INC.ITEMS3-8)
23a
24a
1
1
< - - - -
< - - - -
50163
34128
- - - - >
- - - - >
PICKUP
3
4
5
6
7
8
9
1
4
2
2
2
2
1
< - - - -
48781
- - - - >
DRIVESHAFT
SPROCKET,CONVEYORDRIVE
MOTOR,20T(STANDARD)
< - - - - 22229-0003 - - - - >
< - - - - 43275 - - - - >
SPROCKET,CONV.BELT
SPACER
25
26
1
1
< - - - - 22159-0003 - - - - >
SPROCKET,CONVEYORDRIVE
SHAFT, 20T
< - - - - 22034-0003 - - - - >
< - - - - 35000-1080 - - - - >
BUSHING,BRONZE5/8"I.D.
SPACER,NYLON
50050
50050
50052
ASSEMBLY,DRIVECHAIN(INC.
ITEM26a)
26a
27a
1
1
< - - - - 3101212 - - - - >
MASTERLINK,DRIVECHAIN
< - - - -
< - - - -
49972
48782
- - - - >
- - - - >
BRACKET,DRIVESUPPORT
48851
48851
50029
ASSEMBLY,CHAINCOVER-FOR
OVENS WITH RIGHT-SIDE
CONTROLS
ASSEMBLY,HIGHSPEEDDRIVE
SHAFT(INC. ITEMS10-11)
10
11
12
1
4
2
< - - - -
48781
- - - - >
DRIVESHAFT
27b
1
<--- Not available --->
ASSEMBLY,CHAINCOVER-FOR
OVENS WITH LEFT-SIDE
CONTROLS
< - - - - 22229-0003 - - - - >
SPROCKET,CONV.BELT
< - - - -
45377
- - - - >
FLANGEBEARING(HIGHSPEED
ONLY)
28a
28b
1
1
50057
50057
50055
50055
50059
50059
BELT, CONVEYOR, 18"/457mm,
STANDARD
13
14
1
1
48746
48780
48784
50032
48795
48780
FRAME,IDLERSIDE
BELT, CONVEYOR, 18"/457mm,
HIGHSPEED
ASSEMBLY,IDLERSHAFT(INC.
ITEMS15-19)
29a
29b
30
1
1
1
48707
48707
50044
48706
48707
50044
48708
48708
50044
CRUMBPAN,DRIVESIDE
CRUMBPAN,IDLERSIDE
15
16
17
18
19
20
21
22
1
4
2
2
2
2
2
4
< - - - -
48779
- - - - >
IDLERSHAFT
< - - - - 22229-0003 - - - - >
< - - - - 22034-0003 - - - - >
SPROCKET,CONV.BELT
BUSHING,BRONZE5/8"I.D.
BRACKET,IDLERADJUSTMT.
BRACKET,IDLERSUPPORT
SCREW,IDLERADJUSTMENT
PIVOTPLATE
END STOP (STD. ON 76" CON-
VEYOR, OPT. ON 60" & 56")
37000-0413
50033
37000-0413
31a
1
50040
50040
50040
EXITTRAY, 8"/203mm(STD. ON
60" & 56" CONVEYORS, OPT.
ON 76")
< - - - - 35900-0020 - - - - >
35000-1008
50028
35000-1008
31b
32
1
1
50023
50235
50023
50235
50023
50235
EXIT TRAY, 20"/508mm (OPT.
ON ALL CONVEYORS)
< - - - - 35900-0398 - - - - >
< - - - - 21176-0002 - - - - >
PLATEMOTORCOVERASSY
LOCKNUT, HEX3/8"-16SS
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VIII. SPLIT-BELT CONVEYORS
P/N - 60"
P/N - 56"
P/N - 76"
P/N - 60"
P/N - 56"
P/N - 76"
ITEM QTY. CONVEYOR CONVEYOR CONVEYOR
DESCRIPTION
ITEM QTY. CONVEYOR CONVEYOR CONVEYOR
DESCRIPTION
1
2
1
1
48847
< - - - -
48847
48759
48790
- - - - >
FRAME,DRIVESIDE
23
2
< - - - -
51067
- - - - >
ASSEMBLY, CONVEYOR MO-
TORANDPICKUP(INC.ITEM23a)
ASSEMBLY, SPLIT DRIVE
SHAFT, STANDARD AND HIGH
SPEED(INC.ITEMS3-6)
23a
24
1
2
< - - - -
< - - - -
50163
34128
- - - - >
- - - - >
PICKUP
SPROCKET,CONVEYORDRIVE
MOTOR,20T(STANDARD)
3
4
5
6
7
8
1
1
1
4
2
2
< - - - -
< - - - -
49969
48837
- - - - >
- - - - >
SPLITDRIVESHAFT-MAIN
SPLITDRIVESHAFT-SLEEVE
FLATWASHER,BRONZE
SPROCKET,CONV.BELT
25
2
< - - - - 22159-0003 - - - - >
SPROCKET,CONVEYORDRIVE
SHAFT, 20T (STANDARD AND
HIGHSPEED)
< - - - - 21415-0001 - - - - >
< - - - - 22229-0003 - - - - >
26
1
1
< - - - - 35900-0023 - - - - >
BUSHING,DRIVESPROCKET
< - - - -
43275
- - - - >
SPACER(STANDARDONLY)
27a
50050
50050
50051
50053
ASSEMBLY,DRIVECHAIN,REAR
BELT (LONG - INC. ITEM 27c)
< - - - - 22034-0003 - - - - >
BUSHING, BRONZE 5/8" I.D.
(STANDARD ONLY)
27b
1
50051
50052
ASSEMBLY, DRIVE CHAIN,
FRONTBELT(SHORT-INC.ITEM
27c)
9
2
2
< - - - -
< - - - -
49972
45377
- - - - >
- - - - >
BRACKET, DRIVE SUPPORT
(STANDARD ONLY)
27c
28
1
1
2
< - - - - 3101212 - - - - >
MASTERLINK,DRIVECHAIN
ASSEMBLY,CHAINCOVER
10
FLANGEBEARING(HIGHSPEED
ONLY)
48851
48851
50054
50029
11
12
1
1
48746
48769
48784
50035
48795
48769
FRAME,IDLERSIDE
29a
50056
50058
BELT, CONVEYOR, 9"/229mm,
STANDARD
ASSEMBLY,SPLITIDLERSHAFT
(INC.ITEMS13-19)
29b
2
50056
50054
50058
BELT, CONVEYOR, 9"/229mm,
HIGHSPEED
13
14
15
16
17
18
19
20
21
22
1
1
1
4
2
2
2
2
2
4
< - - - -
< - - - -
49968
48778
- - - - >
- - - - >
SPLITIDLERSHAFT-MAIN
SPLITIDLERSHAFT-SLEEVE
FLATWASHER,BRONZE
SPROCKET,CONV.BELT
BUSHING,BRONZE5/8"I.D.
BRACKET,IDLERADJUSTMT.
BRACKET,IDLERSUPPORT
SCREW,IDLERADJUSTMENT
PIVOTPLATE
30a
30b
31
1
1
48707
48707
50044
48707
48706
50044
48708
48708
50044
CRUMBPAN,DRIVESIDE
CRUMBPAN,IDLERSIDE
< - - - - 21415-0001 - - - - >
< - - - - 22229-0003 - - - - >
< - - - - 22034-0003 - - - - >
END STOP (STD. ON 76" CON-
VEYOR, OPT. ON 60" & 56")
32a
32b
1
1
50040
50023
50040
50023
50040
50023
EXITTRAY, 8"/203mm(STD. ON
60" & 56" CONVEYORS, OPT.
ON 76")
37000-0413
50033
37000-0413
< - - - - 35900-0020 - - - - >
EXIT TRAY, 20"/508mm (OPT.
ON ALL CONVEYORS)
35000-1008
< - - - -
50028
48755
35000-1008
- - - - >
< - - - - 21176-0002 - - - - >
LOCKNUT, HEX3/8"-16SS
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NOTES
38
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SECTION6-ELECTRICALWIRINGDIAGRAMS
SECTION6-ELECTRICALWIRINGDIAGRAMS
Fig. 6-1 - Wiring diagram, PS536GS Gas Oven
208/240V, 50/60 Hz, 1 Ph
IMPORTANT
An electrical wiring diagram for the oven is also located inside the machinery compartment.
39
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Fig. 6-2 - Wiring diagram, PS536GS Gas Oven
208/240V, 50/60 Hz, 1 Ph
40
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SECTION6-ELECTRICALWIRINGDIAGRAMS
Fig. 6-3 - Wiring diagram, PS536GS Gas Oven
208/240V, 50/60 Hz, 1 Ph
41
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NOTES
42
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N
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WARNING
Improper installation, adjustment, alteration, service or maintenance
can cause property damage, injury or death. Read the installation,
operating and maintenance instructions thoroughly before
installing or servicing this equipment.
NOTICE
During the warranty period, ALL parts replacement and servicing should be performed by
your Middleby Marshall Authorized Service Agent. Service that is performed by parties
otherthanyourMiddlebyMarshallAuthorizedServiceAgentmayvoidyourwarranty.
NOTICE
UsinganypartsotherthangenuineMiddlebyMarshallfactorymanufacturedpartsrelieves
themanufacturerofallwarrantyandliability.
NOTICE
Middleby Marshall reserves the right to change specifications at any time.
Middleby is proud to support the Commercial Food Equipment
Service Association (CFESA). We recognize and applaud
CFESA's ongoing efforts to improve the quality of technical
serviceintheindustry.
MiddlebyCookingSystemsGroup•1400ToastmasterDrive•Elgin,IL60120•USA•(847)741-3300•FAX(847)741-4406
24-Hour Service Hotline: 1-(800)-238-8444
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