OperatiOn and parts Manual
MOdel st41230/st41460
MOdel st61230/st61460
subMersible puMps
Revision #1 (11/12/13)
To find the latest revision of this
publication, visit our website at:
THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.
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order via phone:
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Contact your local Multiquip Dealer for
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when ordering parts, please supply:
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st4/st6 series submersible pumps• operation anD parts manual — rev. #1 (11/12/13) — page 3
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safeTy informaTion
Do not operate or service the equipment before reading
the entire manual. Safety precautions should be followed
at all times when operating this equipment.
Failure to read and understand the safety
messages and operating instructions could
result in injury to yourself and others.
Potential hazards associated with the operation of this
equipment will be referenced with hazard symbols which
may appear throughout this manual in conjunction with
safety messages.
Symbol
Safety Hazard
saFetY messages
Burn hazards
The four safety messages shown below will inform you
about potential hazards that could injure you or others.The
safety messages specifically address the level of exposure
to the operator and are preceded by one of four words:
Danger,Warning, Caution or notiCe.
Electric shock hazards
Rotating parts hazards
Pressurized fluid hazards
saFetY sYmbols
Danger
Indicates a hazardous situation which, if not avoided,
WILL result in DeatH or serious inJurY.
Warning
Indicates a hazardous situation which, if not avoided,
CoulD result in DeatH or serious inJurY.
Caution
Indicates a hazardous situation which, if not avoided,
CoulD result in minor or moDerate inJurY.
NOTICE
Addresses practices not related to personal injury.
page 4 — st4/st6 series submersible pumps • operation anD parts manual — rev. #1 (11/12/13)
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safeTy informaTion
general saFetY
Caution
NOTICE
„ This equipment should only be operated by trained and
qualified personnel 18 years of age and older.
„ never operate this equipment without proper protective
clothing, shatterproof glasses, respiratory protection,
hearing protection, steel-toed boots and other protective
devices required by the job or city and state regulations.
„ Whenever necessary, replace nameplate, operation and
safety decals when they become difficult read.
„ Manufacturer does not assume responsibility for any
accident due to equipment modifications. Unauthorized
equipment modification will void all warranties.
„ never use accessories or attachments that are not
recommended by Multiquip for this equipment. Damage
to the equipment and/or injury to user may result.
„ Avoid wearing jewelry or loose fitting clothes that may
snag on the controls or moving parts as this can cause
serious injury.
„ alWaYs know the location of the nearest
„ never operate this equipment when not
feeling well due to fatigue, illness or when
under medication.
fire extinguisher.
„ alWaYs know the location of the nearest
first aid kit.
„ never operate this equipment under the
influence of drugs or alcohol.
„ alWaYsknow the location of the nearest phone or keep
a phone on the job site. Also, know the phone numbers
of the nearest ambulance,doctor and fire department.
This information will be invaluable in the case of an
emergency.
„ alWaYs clear the work area of any debris, tools, etc.
that would constitute a hazard while the equipment is
in operation.
„ No one other than the operator is to be in the working
area when the equipment is in operation.
„ Do not use the equipment for any purpose other than
its intended purposes or applications.
st4/st6 series submersible pumps• operation anD parts manual — rev. #1 (11/12/13) — page 5
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safeTy informaTion
„ Do not attempt to thaw out a frozen pump by using
a torch or other source of flame. Application of heat in
this manner may heat the oil in the seal cavity above the
critical point, causing pump damage.
pump saFetY
Danger
„ neveroperate the equipment in an explosive
atmosphere or near combustible materials.An
explosion or fire could result causing severe
bodily harm or even death.
„ Do not pump water with a temperature greater than
140°F (60°C).
„ Do not pump liquids containing acid or alkali.
Warning
„ alWaYs check strainer before pumping. Make sure
strainer is not clogged. Remove any large objects, dirt
or debris from the strainer to prevent clogging.
„ Accidental starting can cause severe injury
or death. alWaYs place the ON/OFF
switch in the OFF position.
„ alWaYs use a large basket strainer when pumping
water that contains large debris.
„ Do not place hands or fingers inside
pump when pump is running.
„ alWaYs flush pump (clean) after use when pumping
water concentrated with heavy debris.It is very important
to always flush the pump before turning it off to prevent
clogging.
„ never disconnect any emergency or
safetydevices. These devices are intended for operator
safety.Disconnection of these devices can cause severe
injury, bodily harm or even death. Disconnection of any
of these devices will void all warranties.
„ Fix damage to machine and replace any broken parts
immediately.
„ Risk of Electric Shock - This pump has not been
investigated for use in swimming pool or marine areas.
„ alWaYs store equipment properly when it is not being
used.Equipment should be stored in a clean, dry location
out of the reach of children and unauthorized personnel.
Caution
„ Do not restrict the flow of the discharge hose as it may
cause the pump to overheat.
„ never lubricate components or attempt service on a
running machine.
„ never run pump dry.
„ Be careful of discharge hose whipping under pressure.
„ alWaYs allow the machine a proper amount of time to
cool before servicing.
„ alWaYs check pump oil level only when pump is cool.
Expansion due to heat may cause hot oil to spray from
the oil plug when the oil plug is removed. The possibility
of severe scalding may exist.
„ Keep machine in proper running condition.
eleCtriCal saFetY
Danger
NOTICE
„ alWaYs place the pump in an upright position on a
platform before using.The platform will prevent the pump
from burrowing itself on soft sand or mud.
„ The electrical voltage required to operate
pump can cause severe injury or even death
through physical contact with live circuits.
alWaYs disconnect electrical power from
pump before performing maintenance on
pump.
„ never operate pump on its side.
„ Do not allow the pump to freeze in water.
„ never leave an open pump chamber unattended.
„ alWaYs keep the machine in proper running condition.
Warning
„ To reduce the risk of electric shock, connect only to a
circuit protected by a Ground-Fault Circuit-Interrupter
(GFCI).
page 6 — st4/st6 series submersible pumps • operation anD parts manual — rev. #1 (11/12/13)
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safeTy informaTion
Control box safety
NOTICE
Danger
„ alWaYs make certain that the voltage supplied to the
pump is correct. Always read the pump’s nameplate to
determine what the power requirements are.
„ alWaYs have a qualified electrician perform the control
box installation.The possibility exists of electrical shock
or electrocution.
power Cord/Cable safety
NOTICE
Dan
„ alWaYs mount control box in a vertical position
protected from harsh environmental elements.
„ neverstand in water while AC power cord is connected
to a live power source.
liFting saFetY
Caution
„ never use damaged or worn cables or cords. Inspect
for cuts in the insulation.
„ never grab or touch a live power
cord or cable with wet hands. The
possibility exists of electrical shock,
electrocution or death.
„ When raising or lowering of the pump is required, always
attach an adequate rope or lifting device to the correct
lifting point (handle) on the pump.
NOTICE
„ Make sure power cables are securely connected to the
motor's output receptacles. Incorrect connections may
cause electrical shock and damage to the motor.
„ Do not lift machine to unnecessary heights.
„ never lift the equipment while the electric motor is
running.
Warning
transporting saFetY
„ never attempt to use the power cord as a lifting or
lowering device for the pump.
NOTICE
NOTICE
„ alWaYs shut down pump before transporting.
„ alWaYs make certain that proper power or extension
cord has been selected for the job. See Cable Selection
Chart in this manual.
„ alWaYs tie down equipment during transport by
securing the equipment with rope.
environmentalsaFetY/DeCommissioningCE
grounding safety
„ Do not pour waste or oil directly onto
the ground, down a drain or into any water
source.
Danger
„ alWaYs make sure pump is grounded.
„ never use gas piping as an electrical ground.
„ Contact your country's Department of Public
Works or recycling agency in your area and arrange for
proper disposal of any electrical components, waste or
oil associated with this equipment.
„ alWaYs make sure that electrical circuits are properly
grounded to a suitable earth ground (ground rod) per
the National Electrical Code (NEC) and local codes
before operating generator. severe injury or death by
electrocution can result from operating an ungrounded
motor.
„ When the life cycle of this equipment is over it is
recommended that the pump casing and all other metal
parts be sent to a recycling center
Metal recycling involves the collection of metal from
discarded products and its transformation into raw
materials to use in manufacturing a new product.
Recyclers and manufacturers alike promote the process
of recycling metal. Using a metal recycling center
promotes energy cost savings.
st4/st6 series submersible pumps• operation anD parts manual — rev. #1 (11/12/13) — page 7
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sPeCifiCaTions
table 1. specifications
model
st41230
st41460
Centrifugal
Chrome Steel
4.00 (101)
st61230
st61460
Centrifugal
Chrome Steel
6.00 (152)
type
Centrifugal
Chrome Steel
4.00 (101)
Centrifugal
Chrome Steel
6.00 (152)
impeller
Discharge size in. (mm)
max solids in. (mm)
0.60 in (15.2)
maximum pumping Capacity
gallons/min (liters/min.)
423 (1,600)
423 (1,600)
674 (2,450)
674 (2,450)
max Head ft. (m)
138 ft. (42.1)
10 (7.5)
138 ft. (42.1)
10 (7.5)
105 ft. (32.5)
15 (11)
105 ft. (32.5)
15 (11)
power Hp (kW)
Frequency Hz.
60
voltage (phase)
230 (3Ø)
172.2 (230)
28.6 (230)
460 (3Ø)
85.8 (460)
14.3 (460)
230 (3Ø)
258 (230)
43 (230)
460 (3Ø)
129 (460)
21.5 (460)
starting amps (volts)
running amps (volts)
maximumtemperature °F (°C)
oil Chamber Capacity oz. (cc)
lubrication oil
140°F (60°C)
40 (1,200)
47 (1,400)
ISO VG32 or Equivalent
mechanical seal
See Note 2
See Note 2
See Note 2
See Note 2
motor speed rpm
enclosure protection
insulation Class
3,600
IP68
F
power Cable length ft. (m)
Weight lbs. (kg)
33 (10)
205 (93)
205 (93)
301 (137)
301 (137)
Control box
See Note 3
See Note 3
See Note 3
See Note 3
note 1:
motor rotation – Let pump hang freely from a lifting device. Start and stop pump while observing movement (kick) of
pump.If connected correctly the impeller will rotate clockwise (CW) as viewed from above.If pump rotates counterclockwise
interchange any two phases from the power source.
note 2:
mechanical seal oil – Use ISO VG32 lubrication oil, Mobile DTE 24 turbine oil 90 or equivalent. Fill oil chamber 75%
to 85% full (allow air space for expansion).
note 3:
Control box - For unattended operation, CB1269, CB1274, CB1456, or CB1463 Control Boxes (Table 4) are required.
All control boxes provide thermal overload protection.
page 8 — st4/st6 series submersible pumps • operation anD parts manual — rev. #1 (11/12/13)
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Dimensions
B
G
F
A
C
H
J
E
I
D
Figure 1. Pump Dimensions
table 2. Dimensions in. (mm)
reF. Des.
st41230/st4160
11 (279)
reF. Des.
st61230/st6160
A
B
C
D
E
F
G
H
I
14 (356)
14 (356)
11 (279)
32.5 (826)
5.5 (140)
34.75 (883)
5.5 (140)
31.0 (787)
28.25 (718)
J
st4/st6 series submersible pumps• operation anD parts manual — rev. #1 (11/12/13) — page 9
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general informaTion
The Multiquip Model ST41230/ST41460 and ST61230/
ST61460 submersible pumps are designed to pump
water.These pumps work best when faced with high head
applications where you need an appreciable flow.
The pumping of flammable, toxic, corrosive, abrasive liquids
is strictly forbidden.These pumps are best suited for clear
water applications where maximum size of solids (debris)
does not exceed 0.6-inches (15.2 mm).
These pumps have a chrome steel body that is very durable
and able to withstand rough handling. The ST41230/
ST41460 comes with a 4-inch NPT threads for standard
hose connections, while the ST61230/ST61460 comes
with a 6-inch NPT threads for standard hose connections.
The mechanical seal of these pumps operates within an
oil-filled chamber that provides positive lubrication. This
helps prevent damage in the event the pump is run dry for
short periods of time.
For unattended pump operation control boxes are available.
ReferenceTable 4 for the correct control box for your pump.
Before applying power to the pump always read the
nameplate on the pump. The nameplate will display the
voltage and phase required to run the pump. Applying
the incorrect voltage to the pump can severly damage the
pump.
Please make sure that the correct voltage and phase are
applied to the pump at all times.
page 10 — st4/st6 series submersible pumps • operation anD parts manual — rev. #1 (11/12/13)
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ComPonenTs
7
6
8
11
5
7
8
12
4
4
ST41230
ST41460
3
3
ST61230
ST61460
2
2
9
9
10
10
1
1
Figure 2. Submersible Pump Components
Figure 2 shows the location of the basic components, for
the submersible pumps.Listed below is a brief explanation
of each component.
7. aC power Cable – These pumps are supplied with a
33 ft. (10 meters) AC power cable. Always check the
cable for signs of wear. never use a defective power
cable. Replace the cable immediately if the cable is
worn or defective.
1. strainer base –This strainer base is made of stainless
steel which is resistant to hardware corrosion. For
dewatering purposes, always place the strainer base
on a platform.
8. power Cable Clamp – Attaches power cable to pump
to prevent movement.
2. mechanical seal – This oil-filled seal provides
lubrication when running the pump dry. never run
the pump dry! Running the pump dry will cause severe
damage to the pump.
9. impeller – Impellers are constructed of chrome steel
to minimize wear and prolong service life.
10. mechanical seal oil plug – Remove this plug to
check and add ISO VG32 lubrication oil, Mobile DTE
24, turbine oil 90 or equivalent to the oil chamber.This
oil protects the mechanical seal. Oil chamber should
be full enough to cover seal spring.
3. electric motor – These pumps use either a 230 VAC
or 460 VAC, 3Ø, 60 Hz electric motor. Reference
Table 1. for the electric motor for your model pump.
Consult with a licensed electrician before connecting
motor to a power source. Observe all city and local
safety codes.
11. Discharge port – Connect a 6-inch hose to this port
(NPT 6" threads).Remember to adequately support the
discharge hose to avoid stress on the pump.
4. nameplate –Provides vital electrical pump information.
Always read this tag before applying power to the pump.
12. eye bolts – Attach a suitable lifting device to this
handle capable of lifting about 300 lbs. (136 kg).
never lift the pump by its power cord! Lifting the
pump by the power cord will cause undue stress on
the cord and ultimately the cord will become dislodged
from the pump.
5. Discharge port – Connect a 4-inch hose to this port
(NPT 4" threads). Remember to adequately support
the discharge hose to avoid stress on the pump.
6. lifting Handle – Attach a suitable lifting device to this
handle capable of lifting about 200 lbs.(91 kg) never
lift the pump by its power cord.
st4/st6 series submersible pumps• operation anD parts manual — rev. #1 (11/12/13) — page 11
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floaT swiTChes
mechanical Float switch
Design Features
Mechanically activated float switches offer a reliable low
current control for dewatering applications.
Float switch housings are constructed of high-impact,
corrosion resistant polypropylene with mechanically
activated, snap action contacts.
How it Works
„ Suitable for most liquid environments.
„ Hermetically sealed.
The mechanical float switch control will turn on (close)
when the float tips 45° above -horizontal, indicating a high
level, and turns oFF (opens) when the float switch drops
45° below horizontal. Reference Figure 4 and Figure 5.
Maximum pumping range is 120 degrees. See Figure 3
below.
„ Thick-walled non-corrosive PVC plastic enclosure.
„ Pressure tested to 30 ft. (9 meters).
„ Standard SJO, 16-gauge, 2 conductor cord (20 ft./6.09 m).
CONTACTS
CLOSED
PUMP
ON
60
120
ON/OFF
RAMP
STEEL
BALL
PUMP
60
OFF
Figure 4. Float Switch (Closed)
CONTACTS
OPEN
Figure 3. Pumping Range (Float Switch)
pumping range
The pumping range of the pump is determined by the float
switch tether cord. Use Table 3 as guide line to determine
your required pumping range. Pumping ranges are based
on non-turbulent conditions. Range may vary due to water
temperature and cord shape. Please note as the tether
length increases, so does the variance of the pumping
range.
STEEL
BALL
ON/OFF
RAMP
Figure 5. Float Switch (Open)
table 3. pumping range
6 in. 8 in. 10 in.
5.08 cm. 10.16 cm. 15.24 cm. 20.32 cm. 25.4 cm. 30.48 cm. 35.56 cm. 40.46 cm.
6 in. 10 in. 14 in. 18 in. 22 in. 27 in. 31 in. 35 in.
15.24 cm. 25.4 cm. 35.56 cm. 45.72 cm. 55.88 cm. 68.58 cm. 78.74 cm. 88.9 cm.
2 in.
4 in.
12 in.
14 in.
16 in.
tether length
pumping range
page 12 — st4/st6 series submersible pumps • operation anD parts manual — rev. #1 (11/12/13)
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floaT swiTChes
Float switches
mountingthe Float switches
1. Determine the required cord tether length as shown
in Figure 3 and Table 3.
For unattended operation of the submersible pump two
single float switches (Model SW-1WOPA) will be required.
These float switches can be connected directly to a control
box (bare wires) and will allow the pump to turn on and off
depending on the length of the tether.
2. Place the cord into the clamp as shown in Figure 6.
3. Secure the clamp to the discharge hose as shown in
Figure 6. Do not install cord under hose clamp.
4. Using a screwdriver, tighten the hose clamp. Do not
over-tighten. Make sure the float cord is not allowed to
touch the excess hose clamp band during operation.
CAUTION!
HIGH
VOLTAGE!
CB1269
CB1274
CONTROL
BOX
CB1456
CB1463
RESET
EXTERNAL 3-PHASE
(230 OR 460 VOLT)
POWER SOURCE
INPUT POWER
TO CONTROL BOX
CIRCUIT
BREAKER
L1
RED
WHITE
BLACK
PUMP POWER
CABLE
L2
L3
GND.
FLOAT SWITCH
CABLES (2)
DISCHARGE
HOSE
PUMP
ON
MODEL SW-1WO PA
FLOA T S WITCH (2)
PUMPING
RANGE
3.5 in. (9 cm.)
MINIMUM
TETHER
LENGTH
PUMP
OFF
Figure 6. Float Switch Application
st4/st6 series submersible pumps• operation anD parts manual — rev. #1 (11/12/13) — page 13
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floaT swiTChes
Control boxes
For remote pumping applications, all four model submersible
pumps will require a control box (Figure 7).
CAUTION!
HIGH
VOLTAGE!
For each model submersible pump there is an associated
control box. Reference Table 4 for the desired control box
and applicable heater. The heater size is determined by
the the full load amps the pump will draw.
OFF
MAN
AUTO
RESET
These water-resistant control boxes provide electronic
overload protection a watertight enclosure and glands to
prevent water from leaking into the box, and a float switch
interface.
Each control box will require the use of two SW-1WOPA
float switches, no plug, bare wires for direct connection to
the control box. Reference Figure 20 and Figure 21 for a
schematic reprensentation of each control box.
Figure 7. Electrical Control Box
(Typical)
NOTICE
Contact Multiquip sales department to order control
boxes as listed in Table 4.
table 4. Control box specifications
thermal
overload
protection Capability
Float
switch
Control box
model no.
usedWith
pump model
voltage, Heater
Heater
amps
running UL/CSA
3Ø
size
amps
listed
CB1269
CB1274
CB1456
CB1463
ST41230
ST61230
ST41460
ST61460
230
230
460
460
K69
K74
K56
K63
27.7~30.1
40.2~45.5
13.6~14.5
20.6~22.5
28.6
43.0
14.3
21.5
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
page 14 — st4/st6 series submersible pumps • operation anD parts manual — rev. #1 (11/12/13)
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ConTrol box insTallaTion
Control box installation
Control boX mounting
The following procedure outlines the steps for connecting
the pump to a control box.
Mount the control box in an upright vertical position. Make
sure the control box is securely fastened to a flat surface,
that is free of dust, dirt, moisture or any elements that
may contaminate or erode the electronic components of
the control box.
Danger
Each submersible pump is designed to
work with a control box.This control box
contains the necessary electronics (float
3-phase power installation (input)
switch connections) to operate the pump.
Remember this control box contains
hazardous voltages. Disconnect all sources of power
before installing or servicing.There exists the possibility
of electrocution, electric shock or burn, which can cause
severe bodily harm or even death!
Each pump is either configured for 230 or 460VAC voltage
input. Reference Table 1 for the correct input voltage for
your pump.
If you cannot determine what your pump's power
requirements are, look at the vendor supplied identification
name tag attached to the pump or please contact Multiquip's
Service/Technical Assistance department.
Danger
Caution
When installing the control box, the
possibility exists of electrical shock,
electrocution and possibly death! never
have untrained personnel perform the
installation. alWaYs have qualified
service personnel (licensed electrician) perform the
installation.
Applying incorrect power (voltage phasing) to the
submersible pump can cause severe damage to the
pump. Please make sure that the correct voltage and
phase are applied to the pump at all times.
power Cord requirements
When routing the 230/460 VAC, 60 Hz., 3-phase power
via a power cord to the control box, alWaYs use the
correct wire size. Please refer to Table 5 to determine the
correct wire size. Incorrect wire size can adversely affect
the performance of the pump and may ultimately burn out
the pump motor.
Warning
Explosion or Fire Hazard exists if this pump
is used with flammable liquids.Donot use
this pump with flammable liquids. Donot
install this pump in hazardous locations as
defined by the National Electrical Code,
ANSI/NFPA 70.
table 5. power Cord length
andWire size
10 Ft.
(3.0 m)
20 Ft.
(6.0 m)
30 Ft.
(9.1 m)
50 Ft.
(15.2 m)
AMPS
15
20
25
30
40
12 AWG
10 AWG
10 AWG
10 AWG
8 AWG
10 AWG
8 AWG
6 AWG
6 AWG
6 AWG
8 AWG
6 AWG
6 AWG
4 AWG
4 AWG
6 AWG
4 AWG
4 AWG
2 AWG
2 AWG
st4/st6 series submersible pumps• operation anD parts manual — rev. #1 (11/12/13) — page 15
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ConTrol box insTallaTion
Connecting sW-1Wopa Float switches to Control
box
1. Remove the float switch input connector housing, then
route the float switch wires through the cable gland on
the control box. Attach the wires of the float switch to
the terminal block as indicated by Table 6 and Figure 8.
table 6. Dual Float switch Connections
Float
terminal
Wire
switch
block no.
Color
TB1-A1
TB1-A2
Black
White
Start
Stop
TB1-A3
TB1-A4
Black
White
2. Tighten the connector housing to ensure a tight fit
between the cord and the connector body. This will
prevent the cable from pulling out of the terminal block
and also prevent moisture from entering the control box.
3. Determine the tether length of the float switch wires
then secure float switch wires to pump discharge hose.
See Figure 3 and Table 3 to determine the pumping
range.
page 16 — st4/st6 series submersible pumps • operation anD parts manual — rev. #1 (11/12/13)
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ConTrol box Power ConneCTions
3-phase power installation (input to Control box)
3-phase power installation (outputto pump)
1. The 3-phase input power cord should have four wires.
Each wire is color coded.The colors are reD, WHite,
BLACK and green.
1. The 3-phase output power cord should have four wires.
Each wire is color coded.The colors are reD, WHite,
BLACK and green.
2. Remove the 3-phase AC input connector housing from
the control box, then route the three phase input power
cable through the cable gland on the control box.Attach
the wires to the AC terminal block inside the control
box as indicated by Table 7 and Figure 8.
2. Remove the 3-phase AC output power connector
housing on the control box, then route the output power
cable through the cable gland on the control box.
Attach the wires to the AC terminals on the overload
relay module (heaters load side) as indicated by
Table 8 and Figure 8.
table 7. 3Ø-230/460vaC
input power Connections
table 8. 3Ø-230/460vaC
output power Connections
input power
terminal block
Wire Color
output power
overload relay
Wire Color
RED
L1
L2
RED
T1
T2
WHITE
BLACK
GREEN
WHITE
BLACK
GREEN
L3
T3
GROUND
GROUND
3. Tighten the connector housing to ensure a tight fit
between the power cord and the connector body.This
will prevent the cable from pulling out of the terminal
block and also prevent moisture from entering the
control box.
4. Connect the other end of the 3-phase input power cord
to the voltage source. Remember to provide a means
of disconnecting the power from the control box (circuit
breaker or quick disconnect switch). Also make sure
to provide a good earth ground to the control box.
NOTICE
It is recommended that the power being supplied to the
control box alWaYs be connected to a circuit breaker
or a quick disconnect switch.This safety feature allows
for quick removal of power from the control box in the
event of an emergency.
st4/st6 series submersible pumps• operation anD parts manual — rev. #1 (11/12/13) — page 17
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ConTrol box wiring layouT
MOUNT CONTROL
BOX IN AN UP-LEFT
VERTICAL POSITION
AS SHOWN.
1L1
5L3
3
L2
1-
2-
3-
4-
CONTROLLER
F
N
M
-3
1 0
8 /
-
TRANSFORMER
F U S E
D U E L - E L E
F
T E S U
-4
AC POWER
TERMINAL BLOCK
1-
2-
3-
4-
OFF/ON
LAMP
2T1
4T2
6T3
AEG
1
3
0
1
3
MANUAL/AUTO
SWITCH
/0
L
LL
22
LL
33
2
1
5
0
-
0
FLOAT SWITCH
TERMINAL BLOCK
2
R
E
S
E
T
M
A
I
OVERLOAD
RELAY
N
T
R
I
P
EXTERNAL 3-PHASE
(230 OR 460 VOLT)
POWER SOURCE
4
3
2
1
T
1
T
T
L1 L2
L3
2
3
RED
WHT
BLACK
HEATER
SEE TABLE 4
BLK
CIRCUIT
RED
WHT
BLK
BREAKER
L1
RED
WHITE
GRN
GRN
BLACK
L2
L3
GROUND
3 PHASE
AC OUTPUT
POWER CABLE
FLOAT
SWITCH
INPUTS
3 PHASE
AC INPUT
POWER CABLE
1.SECURE FLOAT SWITCH
WIRES TO PUMP
DISCHARGE HOSE
2. START FLOAT
SWITCH. CONNECT
TO TERMINALS 1 AND 2
3. STOP FLOAT
SWITCH. CONNECT
TO TERMINALS 3 AND 4
WARNING
PUMPING
RANGE
CONTROL BOX INSTALLATION IS TO BE
PERFORMED BYA LICENSED ELECTRICIAN
OR QUALIFIED PERSONNEL.
THE POSSIBILITY OF ELECTRICAL SHOCK
OR ELECTROCUTION EXISTS, WHICH COULD
CAUSE SEVERE BODILY HARM EVEN DEATH!
Figure 8. Three Phase
Control Box/Pump System Diagram
page 18 — st4/st6 series submersible pumps • operation anD parts manual — rev. #1 (11/12/13)
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oPeraTion
2. Make sure the pump is always placed in an upright
position, not tilted (Figure 10).Never position the pump
directly on a soft, loose bottom. To attain maximum
pumping capacity and prevent excessive wear, position
the pump so it will not burrow itself into sand or clay.
pump placement
1. Attach a suitable lifting chain to the eye bolts or lift handle
(Figure 9) on the pump. Use a crane, or similar lifting
device and lower the pump into place.For applications
where there is an excessive amount of mud, grit or silt,
the use of a support platform is desirable.
LIFTING
CONNECT
CHAIN
TO CONTROL
BOX
POWER
CORD
4 or 6-INCH
DISCHARGE
HOSE
SUPPORT
PLATFORM
Figure 10. Tilted Position (Incorrect)
Figure 9. Placing the Submersible Pump
(Correct Upright Position)
st4/st6 series submersible pumps• operation anD parts manual — rev. #1 (11/12/13) — page 19
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oPeraTion
Control box operation (manual mode)
reset button
1. From the voltage source, set the circuit breaker or quick
disconnect switch to the on position.
1. When the electronic overload module detects an
overload condition, the pump will shut down.Check the
pump and correct the cause of ther overload.
2. For manual operation of the pump, place the 3-position
operation switch (Figure 11) on the control box in the
manual position.
2. Let the pump cool down, then press the RESET button
(see Figure 14) on the front of the control box to restore
power.
Figure 11. Manual-Off-Auto SW.
(Manual Position)
Figure 14. RESET Button
3. Verify that the on indicator (Figure 12) on the control
box is LIT.This means that power is being supplied to
the control box.
shut-Down
1. Place the 3-position operation switch on the control
box to the oFF position (Figure 15).
Figure 12. Control Box Power ON Indicator
4. In the manual mode the pump will run continuously.Pay
close attention when running the pump in this mode.
Damage to the pump may occur if pump is not fully
immersed in water.
Figure 15. Manual-Off-Auto SW.
(OFF Position)
2. Verify that the control box power on light is oFF.
Control box operation (auto mode)
3. Turn the circuit breaker or quick disconnect switch to
the oFF position.
1. To operate the pump automatically (float switches),
place the 3-position operation switch in the auto
position (Figure 13).
4. Using a suitable lifting device, lift the pump up from
its current position and place on a secure flat surface.
5. Remove the discharge hose from the discharge port
on the pump.
6. Remove all power cables and float switches from
the control box. Place cables and float switches in a
suitable container where they will not get damaged.
Figure 13. Manual-Off-Auto SW.
(Auto Position)
7. If the pump was used to pump mud, grit or silt, flush
vigorously with clean water.
2. In the auto mode the pump will run as long as there
is a sufficient amount of water. This amount of water
is determined by the setting of the float switches. The
stop float switch contacts will open when the water
level is low and power will be removed from the pump's
electric motor.
8. Wipe off any mud or debris that might have attached
itself to the pump.
9. Store pump in a clean dry place away from dirt and
debris.
Once the water level has risen back to the appropriate
level the start float switch contacts will close and power
will be restored to the pump's motor.
page 20 — st4/st6 series submersible pumps • operation anD parts manual — rev. #1 (11/12/13)
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mainTenanCe
Inspecting Lubrication Oil (Mechanical Seal)
lubrication
1. Block the oil fill opening with a finger and roll pump to
one side to drain (Figure 17) oil into a small transparent
container.
To check the lubrication oil level of the mechanical seal
perform the following:
Checking Lubrication Oil Level
2. If oil is cloudy (milky) or has water in it, indicates
that mechanical seal is defective or worn. Replace
mechanical seal.
1. Lay the pump (Figure 16) on its side with the oil plug
facing upwards.
2. Remove oil fill plug.
3. Visually inspect oil plug hole to verify that oil chamber
is full enough to cover seal spring.
4. When reinstalling oil fill plug, apply teflon tape to
prevent leaking.
LAY PUMP FLAT
ON ITS SIDE
OIL FILL
OPENING
Warning
When removing oil fill plug, please note
that pressure may have built up in the oil
chamber. Do not fully remove plug until
pressure has been relieved.Turn oil fill plug
slowly to relieve pressure.
DISCOLORATION OF OIL (MILKY)
INDICATES A WORN OR DEFECTIVE
MECHANICAL SEAL. REPLACE
MECHANICAL SEAL.
Changing Lubrication Oil
Figure 17. Lubrication Oil Inspection
1. If lubrication oil level is low, block the oil fill opening
with a finger and roll pump to one side to drain oil into
a small container.
NOTICE
When replacing the oil in the oil chamber, shaft seal
MUST be changed at the same time.
Use a funnel (Figure 16) and fill oil chamber with ISO
VG32 lubrication oil or equivalent. Oil chamber
capacity is 40 oz.(1,200 cc) for ST41230/ST41460 and
47 oz (1,400 cc) ST61230/ST61460. Fill to 75-80%
capacity to allow for expansion. Replace lubrication oil
once a year or 3,000 hours.
REMOVE FILL PLUG, AND
VISUALLY INSPECT THAT
OIL CHAMBER IS FULL ENOUGH
TO COVER SEAL SPRING.
FILL TO 75-80% CAPACITY
FILL WITH ISO VG32 LUBRICATION
OIL OR EQUIVALENT.
LAY PUMP FLAT
ON ITS SIDE
CHECK HYDRAULIC OIL ONCE
A YEAR OR EVERY 3000 HOURS.
Figure 16. Adding Lubrication Oil
st4/st6 series submersible pumps• operation anD parts manual — rev. #1 (11/12/13) — page 21
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mainTenanCe
impeller removal
ST61230/ST6146
Refer to the the following procedure and Figure 18 for the
removal of the impeller.
ST41230/ST41460
1. Remove oil screw and gasket from the oil fill chamber
port. Drain oil from oil chamber as referenced
in Figure 18.
2. Remove the four hex nuts and lock washers that secure
the base plate to the inlet plate.
3. Remove base plate, inlet plate, o-ring and strainer.
4. Next, remove the four bolts and lock washers that
secure pump casing to the seal bracket.
5. Remove pump casing and seal bracket.
6. Remove impeller cap nut and washer from motor shaft.
7. Using a rubber mallot, tap impeller off motor shaft
remove impeller and associated hardware from motor
shaft. If necessary use a puller to remove impeller.
MOTOR
SHAFT
8. Reassemble in reverse order.
KEY
GASKET
mechanival seal replacement
OIL DRAIN
SCREW
SEAL
BRACKET
1. Clean entire area surrounding mechanical seal.
2. Lubricate mechanical seal with 30 wt. motor oil before
installing back on motor shaft.This lubrication will help
ease the seal back onto the motor shaft.
IMPELLER
CAP NUT
3. In addition replace o-rings, gaskets and any associated
rubber components that show signs of wear.
4. Inspect and replace if necessary the pump casing
(volute) and seal bracket.
PUMP
CASING
LOCK
WASHER (4)
NOTICE
SCREW (4)
Clearance between impeller and wear plate (pump
casing) should be between .011~.019 in.(0.3~0.5 mm).If
impeller is defective or badly worn, replace immediately.
INLET PLATE
LOCK
WASHER (4)
STANDOFF
SCREW
STRAINER
LOCK WASHER (4)
HEX NUT (4)
Figure 18. Impeller Removal
page 22 — st4/st6 series submersible pumps • operation anD parts manual — rev. #1 (11/12/13)
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mainTenanCe
Watertank storage
NOTICE
If an installed pump (immersed in water) has not been in
operation for a long period of time, check the insulation resistance
and run the pump for 30 minutes every month.
Insulation resistance is moisture and temperature
sensitive. When temperature increases, insulation
resistance decreases, and vice versa.
If the pump cannot be run due to lack of water in the tank inspect
the pump and turn the impeller by hand each month and prior
to putting the pump back into service. If insulation drops below
10 megohms, contact an authorized Multiquip service center.
When performing this test measurement, perform the
test using the same test parameters as used in the
initial testing. Contact an authorized Multiquip service
center if the measured cable insulation is 10 megohms
or less.
electrical insulationtesting
Why perform electrical insulation testing?
Electrical insulation starts to age as soon as it is made. Harsh
environments, especially those with extreme temperature
changes and/or chemical contamination, cause further
deterioration of the insulation (power cord).
20M
POWER CABLE
INSULATION
M
V
OFF
As a result, personnel safety (electrocution/shock) and power
reliability can suffer resulting in higher operating cost and
maintenance.
K
SET
UP
GROUND WIRE
(GREEN)
MEGGER™
500 VDC INSULATION
TEST METER
What is Insulation ResistanceTesting
Insulation resistance testing applies a regulated stabilized
high voltage (Figure 19), typically 500 VDC or greater across
a dielectric (power cord). Measuring the amount of leakage
current flowing through the dielectric will yield a resistive
measurement in megohms.
Figure 19. Insulation Tester Application
Danger
Read and follow the manufacturer's user's
manual prior to operating insulation tester
(megaohm meter). This meter generates
a test voltage of 500 volts or greater. Only
qualified and trained personnel should
use this equipment. The possibility exists of severe
electrical shock, electrocution even death, when
using insulation tester.
Insulating MaterialTesting
To verify the integrity of the pump's insulating material (power
cable) it will be necessary to perform an electrical insulation test.
Any electrical insulation must have the opposite characteristic
as the conductor: it should resist the flow of current, keeping it
within the conductor.
To measure the IR (current x resistance), the use of an IR tester
must be employed. This IR tester is a portable device that is a
resistance meter (ohmmeter) with a built in DC generator that
develops a high DC voltage.
longterm storage
1. Area must be free from excessive humidity, corrosive gases,
vapors or vibrations which might damage the pump.
2. Store pump in a vertical position on a pallet or stand.
The high DC voltage from the IR tester is usually 500 VDC or
more.This voltage, when applied causes a small current to flow
through and over the insulation's surfaces. The tester provides
a direct reading of IR in megohms.
3. Coil up the cable, and seal the open end (control box
wires) with waterproof tape or a cable cap.This will prevent
moisture from penetrating into the motor which could cause
severe damage to the windings.
4. Give all unpainted surfaces a light coat of oil or grease to
prevent corrosion.
A high resistance reading would indicate a "good" insulation,
meaning very little current is escaping through the insulation.
While a relatively low resistance reading would indicate a
poor insulation, meaning a significant amount of current
may be leaking through and along the insulation.
5. If new pumps are stored for more than two months, turn
the impeller by hand every two months to prevent the
mechanical seal faces from seizing up. Failure to do this
may result in seal damage when the pump is started.
st4/st6 series submersible pumps• operation anD parts manual — rev. #1 (11/12/13) — page 23
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noTes
page 24 — st4/st6 series submersible pumps • operation anD parts manual — rev. #1 (11/12/13)
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TroubleshooTing
table 9. pumptroubleshooting
sYmptom
possible problem
solution
Check that the proper voltage, 230 or 460 VAC, 60
Hz, 3-phase is being supplied to the pump. Also
check that there is an adequate amount of current
(amps) to run the pump. Check power source circuit
breaker.
Incorrect voltage/amps?
Check electrical connec-
tions?
If using float switches check wiring, inspect power
cord.
Blown power fuse or tripped Replace fuse check circuit breaker, check cause of
circuit breaker?
blown fuse or tripped breaker.
Pump Fails To Start
Disconnect power cord and check for clogging. Un-
clog pump. Check overload protection device.
Impeller locked?
Use multimeter to check motor insulation. Insulation
resistance must be approximately 15 megaohms. If
resistance is low, disassemble pump motor and bake
windings to dry them.
Wet motor windings?
Defective motor and pump
bearings?
Check for excessive bearing wear, if worn replace
bearings. Replace motor if defective.
Twisted or restricted dis-
charge hose?
Lay hose flat un-kinked. Remove clog from hose line.
Clean strainer.
Clogged pump strainer?
Use a voltmeter to check voltage while pump is
energized. Voltage must be within 10%. Check
power source (no load and load). If an extension cord
is used, make sure it has adequate current-carrying
capacity for the required length.See Table 5.
Pump Fails to Deliver Full
Output
Low voltage?
Impeller worn?
Replace impeller.
Defective mechanical seal?
Loose Oil Fill Plug?
Replace mechanical seal.
Tighten securely. Apply teflon tape.
Water in Mechanical
Seal Oil
st4/st6 series submersible pumps• operation anD parts manual — rev. #1 (11/12/13) — page 25
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ConTrol box wiring Diagram (Cb1269/Cb1274)
230 VAC
CB1269
THREE PHASE WIRING
EXTERNAL 3-PHASE
(230 VAC)
POWER SOURCE
CB1274
POWER
INPUT
CONNECTIONS
M
O/L
CIRCUIT
BREAKER
RED AWG 8
RED
WHT
L1 L1
T1
L1
RED
WHITE
BLACK
PUMP GRN
MOTOR
RED AWG 8
RED AWG 8
T2
T3
L2 L2
L3 L3
L2
L3
BLK
H1
H2
H3
H4
SEE TABLE 4
FOR CORRECT
HEATER SELECTION
CONTROL
TRANSFORMER
50VA CPT
GROUND
F1
WHT
X2
XF
X1
FUSE
1/2 AMP
GRN
OVERLOAD
RELAY
MAN
OFF
AUTO
2
4
1
BLK
O/L
X2
NC
ON
INDICATOR
LAMP
L1
L2
230VAC
INPUT
WHT
AWG 10
RED
AWG 10
G
CONTACTOR
5 HP
NO
RED
AWG 10
4
F U S E
WHT AWG 10
3
M
A1
A2
X 1
X F
X 2
RED
AWG 10
1 2 0
1 1
1 1
5
X 1
TERMINAL
BLOCK
0
T R A N S F O R M E R
230 VAC
H4
H2
H3
H1
1
4
3
2
JUMPER
TABS
230VAC
STOP
FLOAT
SWITCH
START
FLOAT
SWITCH
Figure 20. CB1269/CB1274 Control Box Wiring Diagram
page 26 — st4/st6 series submersible pumps • operation anD parts manual — rev. #1 (11/12/13)
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ConTrol box wiring Diagram (Cb1456/Cb1463)
460 VAC
THREE PHASE WIRING
CONNECTIONS
CB1456
CB1463
POWER
INPUT
EXTERNAL 3-PHASE
(460 VAC)
POWER SOURCE
M
O/L
CIRCUIT
BREAKER
RED AWG 8
RED
WHT
L1 L1
T1
L1
RED
WHITE
BLACK
PUMP GRN
MOTOR
RED AWG 8
RED AWG 8
T2
T3
L2 L2
L3 L3
L2
L3
BLK
H1
H3
H2
H4
SEE TABLE 4
FOR CORRECT
HEATER SELECTION
CONTROL
TRANSFORMER
50VA CPT
GROUND
F1
WHT
X2
XF
X1
FUSE
1/2 AMP
GRN
OVERLOAD
RELAY
MAN
2
4
1
BLK
OFF
O/L
AUTO
X2
NC
ON
INDICATOR
LAMP
L1
L2
460VAC
INPUT
WHT
AWG 10
RED
AWG 10
G
CONTACTOR
5 HP
NO
RED
AWG 10
4
F U S E
WHT AWG 10
3
M
A1
A2
X 1
X F
X 2
RED
AWG 10
1 2 0
1 1
1 1
5
X 1
TERMINAL
BLOCK
0
T R A N S F O R M E R
460 VAC
H4
H2
H3
H1
1
4
3
2
JUMPER
TAB
460VAC
STOP
FLOAT
SWITCH
START
FLOAT
SWITCH
Figure 21. CB1456/CB1463 Control Box Wiring Diagram
st4/st6 series submersible pumps• operation anD parts manual — rev. #1 (11/12/13) — page 27
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exPlanaTion of CoDes in remarKs Column
The following section explains the different symbols and
QtY. Column
remarks used in the Parts section of this manual. Use the
help numbers found on the back page of the manual if there
are any questions.
numbers used — Item quantity can be indicated by a
number, a blank entry, or A/R.
A/R (As Required) is generally used for hoses or other
parts that are sold in bulk and cut to length.
NOTICE
The contents and part numbers listed in the parts
section are subject to change without notice.Multiquip
does not guarantee the availability of the parts listed.
A blank entry generally indicates that the item is not sold
separately.Other entries will be clarified in the “Remarks”
Column.
SAMPLE PARTS LIST
REMARKS Column
no. part no. part name
QtY. REMARKS
Some of the most common notes found in the “Remarks”
Column are listed below. Other additional notes needed
to describe the item can also be shown.
1
2%
12345
BOLT .....................1 .....INCLUDES ITEMS W/%
WASHER, 1/4 IN. ..........NOT SOLD SEPARATELY
WASHER, 3/8 IN. ..1 .....MQ-45T ONLY
2% 12347
3
4
12348
12349
HOSE ..................A/R ...MAKE LOCALLY
BEARING ..............1 .....S/N 2345B AND ABOVE
assembly/Kit — All items on the parts list with the
same unique symbol will be included when this item is
purchased.
no. Column
Indicated by:
unique symbols — All items with same unique symbol
(@, #, +, %, or >) in the number column belong to the
same assembly or kit, which is indicated by a note in the
“Remarks” column.
“INCLUDES ITEMS W/(unique symbol)”
serial number break — Used to list an effective serial
number range where a particular part is used.
Duplicate item numbers — Duplicate numbers indicate
multiple part numbers, which are in effect for the same
general item, such as different size saw blade guards in
use or a part that has been updated on newer versions
of the same machine.
Indicated by:
“S/N XXXXX AND BELOW”
“S/N XXXX AND ABOVE”
“S/N XXXX TO S/N XXX”
specific model number use — Indicates that the part
is used only with the specific model number or model
number variant listed. It can also be used to show a
part is NOT used on a specific model or model number
variant.
NOTICE
When ordering a part that has more than one item
number listed, check the remarks column for help in
determining the proper part to order.
Indicated by:
part no. Column
“XXXXX ONLY”
“NOT USED ON XXXX”
numbers used — Part numbers can be indicated by a
number, a blank entry, or TBD.
“make/obtain locally” — Indicates that the part can
be purchased at any hardware shop or made out of
available items.Examples include battery cables, shims,
and certain washers and nuts.
TBD (To Be Determined) is generally used to show a
part that has not been assigned a formal part number
at the time of publication.
A blank entry generally indicates that the item is not sold
separately or is not sold by Multiquip. Other entries will
be clarified in the “Remarks” Column.
“not sold separately”— Indicates that an item cannot
be purchased as a separate item and is either part of an
assembly/kit that can be purchased, or is not available
for sale through Multiquip.
page 28 — st4/st6 series submersible pumps • operation anD parts manual — rev. #1 (11/12/13)
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suggesTeD sPare ParTs
st41230/st41460 anD st61230/st61460 submersible pumps
1 to 3 units
Qty.
1............432230-01 ............MECHANICAL SEAL
p/n
Description
1............4214335-01 ..........OIL SEAL
1............86414475N...........O-RING GASKET SET (ST41230/ST41460)
1............86414110..............O-RING GASKET SET (ST61230/ST61460)
NOTICE
Part numbers on this Suggested Spare Parts list may
supersede/replace the part numbers shown in the
following parts lists.
st4/st6 series submersible pumps• operation anD parts manual — rev. #1 (11/12/13) — page 29
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sT41230/sT41460 assy.
73G
73
75
73A
75A
75C
2
19
73
1
41D
81
68
45
73B
66
73F
75E
75B
65A
18
43
4A
73C
41D
41A
73D
73D
45B
75C
11
45B
45A
4
42
67
15
75H
73J
75I
75F
41
81A
73E
71
75G
74
3
75D
41C
79
10
32
82
75
76
31
O-RING
AND
GASKETS
SET
73H
12
77
41B
75
17
73L
13
75
65
9
41
76A
79A
74A
page 30 — st4/st6 series submersible pumps • operation anD parts manual — rev. #1 (11/12/13)
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sT41230/sT41460 assy.
no.
1
2
part no.
01360844
02303-1
part name
DISCHARGE HEAD, NPT 4"
HANDLE
QtY.
1
1
REMARKS
3
4
4A
9
0336FS-0550
0436FS0750N
0436FS0750NF UPPER COVER
SWITCH PLATE
MOTOR COVER
1
1
1
1
1
1
1
1
1
1
1
1
0935FS0750N
1036FS0750N
1136FS0750N
1236FS0750N
13431512012
BASE PLATE
10
11
12
13
15
17
18
19
31
31
32
41$
PUMP CASING
SEAL BRACKET
INLET PLATE, 4"
STRAINER, 15MM
1541FS4750174 IMPELLER
1743160320
1843FS0750N
1936FS0750N
313220518F6
313440518F6
323FS0750N
411026-10
MOTOR FRAME
OUTER CASE
BEARING BRACKET
STATOR ............................................................1................ST41230
STATOR .............................................................1................ST41460
SHAFT/ROTOR W/O BEARING
O-RING
O-RING
1
2
1
1
1
2
1
1
1
1
2
1
1
1
1
1
41A$ 411031-08
41B$ 411031-02
41C$ 411031-00
41D$ 411040-01
42
43
O-RING
O-RING
O-RING
OIL SEAL
MECHANICAL SEAL
GASKET
4214335-01
432230-01
455FS-055010
45$
45A$ 451FS0750N10 GASKET
GASKET
45B$ 459010
65
6531150
65433
SHIM, 50MM
SHIM
65A
66
67
68
66715145
674335-01
684321
CABLE GLAND
SHAFT SLEEVE
GLAND HOLDER
71
71
7128-06
7128-07
THERMAL PROTECTOR...................................1................ST41230
THERMAL PROTECTOR...................................1................ST41460
73
73A
73B
73431100301
73432060161
73431120401
SCREW, HEX. M10
6
4
3
4
2
2
3
4
4
4
1
1
4
SCREW, SOCKET HEX. M6
SCREW, HEX. M12
SCREW, HEX. M8
73C 73436084001
73D 73432100161
73E
73F
73G 73431080301
73H 73431100351
73L
73J
74
SCREW, SOCKET HEX. M10
SCREW, ROUND CROSS M4
SCREW, FLAT HEX. M5
SCREW, FLAT HEX. M8
SCREW, FLAT HEX. M10
SCREW, STAND-OFF M10
SCREW, ROUND CROSS M4
NUT, M16
73433040121
73431050121
73437101022
73303040081
7434316
74A
7414310
NUT, M10
st4/st6 series submersible pumps• operation anD parts manual — rev. #1 (11/12/13) — page 31
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sT41230/sT41460 assy.
73G
73
75
73A
75A
75C
2
19
73
1
41D
81
68
45
73B
66
73F
75E
75B
65A
18
43
4A
73C
41D
41A
73D
73D
45B
75C
11
45B
45A
4
42
67
15
75H
73J
75I
75F
41
81A
73E
71
75G
74
3
75D
41C
79
10
32
82
75
76
31
O-RING
AND
GASKETS
SET
73H
12
77
41B
75
17
73L
13
75
65
9
41
76A
79A
74A
page 32 — st4/st6 series submersible pumps • operation anD parts manual — rev. #1 (11/12/13)
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sT41230/sT41460 assy.
no.
75
75A
75B
part no.
part name
QtY.
REMARKS
753430010-01
753430006-01
753430012-01
WASHER, LOCK M10
WASHER, LOCK, M6
WASHER, LOCK, M12
WASHER, LOCK, M8
WAVE WASHER, 6304
WASHER, LOCK, M5
WASHER, M25
14
4
2
8
1
3
1
1
1
1
75C 753430008-01
75D 751306304
75E
75F
75G 752430016-03
75H 753430016-01
75I
76
76A
76A
77
79
79A
81
753430005-01
752430025-01
WASHER, M16
WASHER, LOCK, M16
WASHER, LOCK, M4
SNAP RING .......................................................1................ST41230
SNAP RING .......................................................1................ST41460
757300004
7630STW40
7630RTW90
7630RTW40
771433-01
79363041
SNAP RING
1
1
1
2
1
KEY, 7X7X18
BEARING, 6304
BEARING, 6308
79363081
8102554150131 CABLE, 50 FT.
81A
81A
82
81G1001
811202
86414475N
EARTH LEAD ....................................................1................ST41230
EARTH LEAD ....................................................1................ST41460
O-RING AND GASKET SET..............................1................INCLUDES ITEMS W/$
st4/st6 series submersible pumps• operation anD parts manual — rev. #1 (11/12/13) — page 33
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sT61230/sT61460 assy.
41B
45
73A
75
81
68A
75A 73B
73
1
68
18
73F
73D
75B
73C
75B
66
45
75E
41
76B
43
4A
73G
11
45C
45C
42
73D
45A
45B
73G
67
75B
75I
77
4
15
73E
71
75F
73J
75G
74
75C
3
41D
81A
10
41F
79
75B
75D
32
73H
41B
12
76
82
74A
O-RING
AND
GASKETS
SET
75B
31
17
73I
73D
75B
74A
76A
79A
13
9
73D
75B
41A
75H
75B
74A
19
page 34 — st4/st6 series submersible pumps • operation anD parts manual — rev. #1 (11/12/13)
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sT61230/sT61460 assy.
no.
1
3
4
4A
9
10
11
12
13
15
17
18
19
31
31
32
41$
part no.
01360954
part name
QtY.
REMARKS
DISCHARGE HEAD, NPT 6"
SWITCH PLATE
MOTOR COVER
UPPER COVER
BASE PLATE
1
1
1
1
1
1
1
1
1
1
1
1
1
0336FS-1125
0436FS-1125
0436FS-1125F
0935FS-1125
1036FS-1125
1136FS-1125
1236FS-1125B
13431512511
PUMP CASING
SEAL BRACKET
INLET PLATE, 6"
STRAINER, 15MM
1541FS6110158 IMPELLER
1736190320
1843FS-1125
1936FS1125
313220616F6
313440616F6
323FS-1125
411057-01
MOTOR FRAME
OUTER CASE
BEARING BRACKET
STATOR .............................................................1................ST61230
STATOR .............................................................1................ST61460
SHAFT/ROTOR W/O BEARING
O-RING
O-RING
O-RING
O-RING
1
1
1
2
1
1
1
1
2
3
1
3
1
1
1
1
41A$ 411031-02
41B$ 411031-14
41D$ 411031-00
41F$ 411035-03
42
43
O-RING
OIL SEAL
MECHANICAL SEAL
GASKET
4214335-01
432230-01
456FS-112510
45$
45A$ 451FS-112510-2 GASKET
45B$ 451FS-112510-1 GASKET
45C$ 459010
66
67
68
68A
71
71
73
73A
73A
73B
GASKET
66715145-1
CABLE GLAND
SHAFT SLEEVE
GLAND HOLDER
GLAND HOLDER
THERMAL PROTECTOR...................................1................ST61230
THERMAL PROTECTOR...................................1................ST61460
SCREW, HEX. M12
SCREW, HEX. M8
SCREW, HEX. M8
674335-01
68363
68363A
7128-08
BYH-15-DR
73431120351
73431080601
73431080551
73431060201
6
4
4
SCREW, HEX. M6
2
73C 73431100401
73D 73431100351
SCREW, HEX. M10
SCREW, HEX. M10
SCREW, ROUND CROSS M4
SCREW, HEX. M5
2
13
2
73E
73F
73433040121
73431050121
3
73G 73432100161
73H 73431100401
SCREW, SOCKET HEX.M10
SCREW, FLAT HEX.M10
SCREW, STAND-OFF M10
SCREW, ROUND CROSS M4
NUT, M16
3
4
4
1
1
12
73I
73J
74
73437101021
73303040081
7434316
74A
7414310
NUT, M10
st4/st6 series submersible pumps• operation anD parts manual — rev. #1 (11/12/13) — page 35
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sT61230/sT61460 assy.
41B
45
73A
75
81
68A
75A 73B
73
1
68
18
73F
73D
75B
73C
75B
66
45
75E
41
76B
43
4A
73G
11
45C
45C
42
73D
45A
45B
73G
67
75B
75I
77
4
15
73E
71
75F
73J
75G
74
75C
3
41D
81A
10
41F
79
75B
75D
32
73H
41B
12
76
82
74A
O-RING
AND
GASKETS
SET
75B
31
17
73I
73D
75B
74A
76A
79A
13
9
73D
75B
41A
75H
75B
74A
19
page 36 — st4/st6 series submersible pumps • operation anD parts manual — rev. #1 (11/12/13)
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sT61230/sT61460 assy.
no.
75
75A
75B
part no.
part name
QtY.
REMARKS
753430008-01
753430006-01
753430010-01
WASHER, LOCK M8
WASHER, LOCK, M6
WASHER, LOCK, M10
WASHER, LOCK, M4
WAVE WASHER
WASHER, LOCK M5
WASHER
4
2
27
1
1
3
75C 757300004
75D 751306306
75E
75F
753430005-01
752430016-03
1
75G 753430016-01
75H 752430010-01
WASHER, LOCK, M16
WASHER
WASHER
SNAP RING .......................................................1................ST61230
SNAP RING .......................................................1................ST61460
RING FASTENER, M12
KEY, 7X7X18
BEARING, 6306
BEARING, 6308
1
4
3
75I
76
76A
76B
77
79
79A
81
752430025-01
7630STW40
7630RTW90
7607-01
771433-01
79363061
79363081
2
1
1
2
8102804150171 CABLE, 50 FT. ...................................................1................ST61230
8102554150171 CABLE, 50 FT. ...................................................1................ST61460
81
81A
81A
82
81G0801
811202
86414110
EARTH LEAD
EARTH LEAD
1
1
O-RING AND GASKET SET..............................1................INCLUDES ITEMS W/$
st4/st6 series submersible pumps• operation anD parts manual — rev. #1 (11/12/13) — page 37
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Terms anD ConDiTions of sale — ParTs
5. Parts must be in new and resalable
condition, in the original Multiquip
package (if any), and with Multiquip part
numbers clearly marked.
Multiquip reserves the right to quote and
sell direct to Government agencies, and to
Original Equipment Manufacturer accounts
who use our products as integral parts of their
own products.
paYment terms
Terms of payment for parts are net 30 days.
FreigHt poliCY
6. The following items are not returnable:
All parts orders will be shipped collect or
prepaid with the charges added to the invoice.
All shipments are F.O.B. point of origin.
Multiquip’s responsibility ceases when a
signed manifest has been obtained from the
carrier, and any claim for shortage or damage
must be settled between the consignee and
the carrier.
a. Obsolete parts. (If an item is in the
price book and shows as being
replaced by another item, it is
obsolete.)
speCial eXpeDiting serviCe
A $35.00 surcharge will be added to the
invoice for special handling including bus
shipments, insured parcel post or in cases
where Multiquip must personally deliver the
parts to the carrier.
b. Any parts with a limited shelf life
(such as gaskets, seals, “O” rings,
and other rubber parts) that were
purchased more than six months
prior to the return date.
limitations oF seller’s liabilitY
minimum orDer
Multiquip shall not be liable hereunder for
damages in excess of the purchase price of
the item with respect to which damages are
claimed, and in no event shall Multiquip be
liable for loss of profit or good will or for any
other special, consequential or incidental
damages.
The minimum charge for orders from Multiquip
is $15.00 net. Customers will be asked for
instructions regarding handling of orders not
meeting this requirement.
c. Any line item with an extended
dealer net price of less than
$5.00.
d. Special order items.
returneD gooDs poliCY
Return shipments will be accepted and
credit will be allowed, subject to the following
provisions:
e. Electrical components.
f. Paint, chemicals, and lubricants.
g. Decals and paper products.
h. Items purchased in kits.
limitation oF Warranties
No warranties, express or implied, are
made in connection with the sale of parts or
trade accessories nor as to any engine not
manufactured by Multiquip. Such warranties
made in connection with the sale of new,
complete units are made exclusively by a
statement of warranty packaged with such
units, and Multiquip neither assumes nor
authorizes any person to assume for it
any other obligation or liability whatever in
connection with the sale of its products. Apart
from such written statement of warranty,
there are no warranties, express, implied or
statutory, which extend beyond the description
of the products on the face hereof.
1. A Returned Material Authorization
must be approved by Multiquip prior to
shipment.
7. The sender will be notified of any material
received that is not acceptable.
8. Such material will be held for five
working days from notification, pending
instructions. If a reply is not received
within five days, the material will be
returned to the sender at his expense.
2. To obtain a Return Material Authorization,
a list must be provided to Multiquip
Parts Sales that defines item numbers,
quantities, and descriptions of the items
to be returned.
9. Credit on returned parts will be issued
at dealer net price at time of the original
purchase, less a 15% restocking
charge.
a. The parts numbers and descriptions
must match the current parts price
list.
b. The list must be typed or computer
generated.
10. In cases where an item is accepted, for
which the original purchase document
can not be determined, the price will be
based on the list price that was effective
twelve months prior to the RMA date.
c. The list must state the reason(s)
for the return.
Effective: February 22, 2006
d. The list must reference the sales
order(s) or invoice(s) under
which the items were originally
purchased.
11. Credit issued will be applied to future
purchases only.
priCing anD rebates
e. The list must include the name
and phone number of the person
requesting the RMA.
Prices are subject to change without prior
notice. Price changes are effective on a
specific date and all orders received on or
after that date will be billed at the revised price.
Rebates for price declines and added charges
for price increases will not be made for stock
on hand at the time of any price change.
3. AcopyoftheReturnMaterialAuthorization
must accompany the return shipment.
4. Freight is at the sender’s expense. All
parts must be returned freight prepaid to
Multiquip’s designated receiving point.
page 38 — st4/st6 series submersible pumps • operation anD parts manual — rev. #1 (11/12/13)
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noTes
st4/st6 series submersible pumps• operation anD parts manual — rev. #1 (11/12/13) — page 39
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OperatiOn and parts Manual
HERE’S HOW TO GET HELP
PLEASE HAVE THE MODEL AND SERIAL
NUMBER ON-HAND WHEN CALLING
UNITED STATES
Multiquip Corporate Office
MQ Parts Department
18910 Wilmington Ave.
Carson, CA 90746
Contact: [email protected]
Tel. (800) 421-1244
Fax (310) 537-3927
800-427-1244
310-537-3700
Fax: 800-672-7877
Fax: 310-637-3284
Service Department
Warranty Department
800-421-1244
310-537-3700
Fax: 310-537-4259
Fax: 310-943-2238
800-421-1244
310-537-3700
Fax: 310-943-2249
Technical Assistance
800-478-1244
UNITED KINGDOM
CANADA
Multiquip
Multiquip (UK) Limited Head Office
4110 Industriel Boul.
Laval, Quebec, Canada H7L 6V3
Contact: [email protected]
Tel: (450) 625-2244
Tel: (877) 963-4411
Fax: (450) 625-8664
Unit 2, Northpoint Industrial Estate, Tel: 0161 339 2223
Fax: 0161 339 3226
Globe Lane,
Dukinfield, Cheshire SK16 4UJ
Contact: [email protected]
© COPYRIGHT 2013, MULTIQUIP INC.
Multiquip Inc, the MQ logo are registered trademarks of Multiquip Inc. and may not be used, reproduced, or altered without written permission. All other trademarks are the property
of their respective owners and used with permission.
This manual MUsT accompany the equipment at all times. This manual is considered a permanent part of the equipment and should remain with the unit if resold.
The information and specifications included in this publication were in effect at the time of approval for printing. Illustrations, descriptions, references and technical data contained in
this manual are for guidance only and may not be considered as binding. Multiquip Inc. reserves the right to discontinue or change specifications, design or the information published
in this publication at any time without notice and without incurring any obligations.
Your Local Dealer is:
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