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ST4125G
User Manual
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Multiquip ST4125G, ST6125G User Manual

OPERATION MANUAL
MODEL ST4125G/ST6125G
SUBMERSIBLE PUMP
Revision #0 (11/18/10)
To fi nd the latest revision of this
publication, visit our website at:
www.multiquip.com
THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.
ST4125G/ST6125G Submersible Pump
Table Of Contents .................................................... 2
Parts Ordering Procedures ...................................... 3
Safety Information ................................................ 4-7
Specifi cations ............................................................ 8
Dimensions .............................................................. 9
General Information .............................................. 10
Components ......................................................... 11
Float Switches .................................................. 12-14
Control Box Installation .................................... 15-16
230/460 Vac Voltage Selection ............................. 17
Control Box Power Connections ........................... 18
Control Box Wiring Layout .................................... 19
Operation ......................................................... 20-21
Maintenance .................................................... 22-25
Control Box Wiring Diagram ................................. 26
TABLE OF CONTENTS
NOTES
ST4125G/ST6125G SUBMERSIBLE PUMP• OPERATION MANUAL — REV. #0 (11/18/10) — PAGE 3
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.
SAFETY MESSAGES
The four safety messages shown below will inform you about potential hazards that could injure you or others. The safety messages specifi cally address the level of exposure to the operator and are preceded by one of four words:
DANGER, WARNING, CAUTION or NOTICE.
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.
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
Burn hazards
Electric shock hazards
Rotating parts hazards
Pressurized fluid hazards
CAUTION
Indicates a hazardous situation which, if not avoided, COULD result in MINOR or MODERATE INJURY.
NOTICE
Addresses practices not related to personal injury.
SAFETY INFORMATION
GENERAL SAFETY
CAUTION
 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.
 Avoid wearing jewelry or loose fi tting clothes that may
snag on the controls or moving parts as this can cause serious injury.
NEVER operate this equipment when not
feeling well due to fatigue, illness or when under medication.
NEVER operate this equipment under the
infl uence of drugs or alcohol.
NOTICE
 This equipment should only be operated by trained and
qualifi ed personnel 18 years of age and older.
 Whenever necessary, replace nameplate, operation and
safety decals when they become diffi cult read.
 Manufacturer does not assume responsibility for any
accident due to equipment modifi cations. Unauthorized equipment modifi cation 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.
 ALWAYS know the location of the nearest
fi re extinguisher.
 ALWAYS know the location of the nearest
fi rst aid kit.
 ALWAYS know 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 fi re 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.
ST4125G/ST6125G SUBMERSIBLE PUMP• OPERATION MANUAL — REV. #0 (11/18/10) — PAGE 5
SAFETY INFORMATION
PUMP SAFETY
DANGER
 NEVER operate the equipment in an explosive
atmosphere or near combustible materials. An explosion or fi re could result causing severe
bodily harm or even death.
WARNING
 Accidental starting can cause severe injury
or death. ALWAYS place the ON/OFF switch in the OFF position.
DO NOT place hands or fingers inside
pump when pump is running.
 NEVER disconnect any emergency or
safety devices. 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.
 Risk of Electric Shock - This pump has not been
investigated for use in swimming pool or marine areas.
CAUTION
DO NOT restrict the fl ow of the discharge hose as it may
cause the pump to overheat.
 Be careful of discharge hose whipping under pressure.
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.
a torch or other source of fl ame. Application of heat in this manner may heat the oil in the seal cavity above the critical point, causing pump damage.
DO NOT pump water with a temperature greater than
104°F.
DO NOT pump liquids containing acid or alkali.
ALWAYS check strainer before pumping. Make sure
strainer is not clogged. Remove any large objects, dirt or debris from the strainer to prevent clogging.
ALWAYS use a large basket strainer when pumping
water that contains large debris.
ALWAYS fl ush pump (clean) after use when pumping
water concentrated with heavy debris. It is very important to always fl ush the pump before turning it off to prevent clogging.
 Fix damage to machine and replace any broken parts
immediately.
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.
NEVER lubricate components or attempt service on a
running machine.
NEVER run pump dry.
ALWAYS allow the machine a proper amount of time to
cool before servicing.
 Keep machine in proper running condition.
ELECTRICAL SAFETY
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.
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.
DO NOT attempt to thaw out a frozen pump by using
DANGER
 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.
WARNING
 To reduce the risk of electric shock, connect only to a
circuit protected by a Ground-Fault Circuit-Interrupter (GFCI).
SAFETY INFORMATION
k
E
p
NOTICE
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.
Power Cord/Cable Safety
DANGER
 NEVER let power cords or cables lay in water.
 NEVER stand in water while AC power cord is connected
to a live power source.
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.
 Make sure power cables are securely connected to the
motor's output receptacles. Incorrect connections may cause electrical shock and damage to the motor.
WARNING
Control Box Safety
DANGER
 ALWAYS have a qualifi ed electrician perform the control
box installation. The possibility exists of electrical shoc or electrocution.
NOTICE
ALWAYS mount control box in a vertical position
protected from harsh environmental elements.
LIFTING SAFETY
CAUTION
 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
 DO NOT lift machine to unnecessary heights.
 NEVER lift the equipment while the electric motor is
running.
TRANSPORTING SAFETY
 NEVER attempt to use the power cord as a lifting or
lowering device for the pump.
NOTICE
ALWAYS make certain that proper power or extension
cord has been selected for the job. See Cable Selection Chart in this manual.
Grounding Safety
DANGER
 ALWAYS make sure pump is grounded.
 NEVER use gas piping as an electrical ground.
 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.
NOTICE
 ALWAYS shut down pump before transporting.
 ALWAYS tie down equipment during transport by
securing the equipment with rope.
ENVIRONMENTAL SAFETY/DECOMMISSIONINGC
 DO NOT pour waste or oil directly onto
the ground, down a drain or into any water source.
 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.
 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
romotes energy cost savings.
ST4125G/ST6125G SUBMERSIBLE PUMP• OPERATION MANUAL — REV. #0 (11/18/10) — PAGE 7
ST4125G/ST6125G SUBMERSIBLE PUMP — SPECIFICATIONS
Table 1. Specifi cations
Model
Type
Impeller Cast Ductile Iron Cast Ductile Iron
Discharge Size 4.00 in. (101 mm) 6.00 in. (152 mm)
Max Solids .078 in (2 mm) .078 in (2 mm)
Maximum Pumping Capacity
Max Head 111 ft. (33.8 meters) TBD
Power 10 HP (7.5 kw) 15 HP (11 kw)
Voltage/Phase 230/460 3Ø 230/460 3Ø
Starting Amps
Running Amps
Max Starts/Hr.
Enclosure Type
Insulation Class
Max Temperature
Centrifugal Submersible Pump Centrifugal Submersible Pump
ST4125G ST6125G
380 gallons/minute
(1,438 liters/minute)
180 (230V)
90 (460V)
24 (230V) 12 (460V)
TBD
TBD
TBD
30 30
68 68
FF
104° F (40° C) 104° F (40° C)
Control Box Required See Note 3 See Note 3
Power Cable Length 50 ft. (15.2 m) 50 ft. (15.2 m)
Dry Weight 344 lb (156 kg) TBD)
Max Height 33.5 in (85.09 cm) TBD
Max Diameter 14.0 in (35.56 cm) TBD
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.
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).
3. Control Box - For unattended operation, CB12 or CB14 Control Box (Table 3) is required. Control boxes will provide
thermal overload protection.
ST4125G/ST6125G SUBMERSIBLE PUMP — DIMENSIONS
34.21 in.
(869 mm)
12.72 in.
(323 mm)
6.97 in.
(177 mm)
15.47 in.
(393 mm)
3.94 in.
(100 mm)
35.67 in.
ST4125G ST6125G
28.9 in.
(734 mm)
(906 mm)
16.89 in.
(429 mm)
5.90 in.
(150 mm)
(323 mm)
6.97 in.
(177 mm)
30.67 in.
(779 mm)
12.72 in.
4.57 in.
(116 mm)
11.89 in.
(302 mm)
4.57 in.
(116 mm)
11.89 in.
(302 mm)
Figure 1. ST4125G/ST6125G Pump Dimensions
ST4125G/ST6125G SUBMERSIBLE PUMP• OPERATION MANUAL — REV. #0 (11/18/10) — PAGE 9
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