Multiquip ST4125G, ST6125G operation manual Pump Troubleshooting

Page 25

 

 

TROUBLESHOOTING

 

 

 

 

Table 8. Pump Troubleshooting

 

 

 

SYMPTOM

POSSIBLE PROBLEM

SOLUTION

 

 

 

 

 

Check that the proper voltage, 230 or 460 VAC, 60

 

 

Hz, 3-phase is being supplied to the pump. Also

 

Incorrect voltage/amps?

check that there is an adequate amount of current

 

 

(amps) to run the pump. Check power source circuit

 

 

breaker.

 

 

 

 

Check electrical connec-

If using fl oat switches check wiring, inspect power

 

tions?

cord.

 

 

 

 

Blown power fuse or tripped

Replace fuse check circuit breaker, check cause of

Pump Fails To Start

circuit breaker?

blown fuse or tripped breaker.

 

 

 

Impeller locked?

Disconnect power cord and check for clogging. Un-

 

clog pump. Check overload protection device.

 

 

 

 

 

 

 

Use multimeter to check motor insulation. Insulation

 

Wet motor windings?

resistance must be approximately 15 megaohms. If

 

resistance is low, disassemble pump motor and bake

 

 

 

 

windings to dry them.

 

 

 

 

Defective motor and pump

Check for excessive bearing wear, if worn replace

 

bearings?

bearings. Replace motor if defective.

 

 

 

 

Twisted or restricted dis-

Lay hose fl at un-kinked. Remove clog from hose line.

 

charge hose?

 

 

 

 

 

 

Clogged pump strainer?

Clean strainer.

 

 

 

Pump Fails to Deliver Full

 

Use a voltmeter to check voltage while pump is

Output

 

energized. Voltage must be within ±10%. Check

 

Low voltage?

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 4.

 

 

 

 

Impeller worn?

Replace impeller.

 

 

 

Water in Mechanical

Defective mechanical seal?

Replace mechanical seal.

 

 

Seal Oil

Loose Oil Fill Plug?

Tighten securely. Apply tefl on tape.

 

 

 

 

ST4125G/ST6125G SUBMERSIBLE PUMP• OPERATION MANUAL — REV. #0 (11/18/10) — PAGE 25

Page 24 Page 26
Image 25
Page 24 Page 26
Contents This Manual Must Accompany the Equipment AT ALL Times Model ST4125G/ST6125GST4125G/ST6125G Submersible Pump Table of ContentsPage Safety Messages Safety InformationSymbol fire extinguisher General Safetyfirst aid kit Electrical Safety Pump Safety Never disconnect any emergency or Grounding Safety Power Cord/Cable SafetyControl Box Safety Lifting SafetySpecifications ST4125G/ST6125G Submersible Pump SpecificationsModel ST4125G/ST6125G Pump Dimensions ST4125G/ST6125G Submersible Pump DimensionsST4125G/ST6125G General Information Submersible Pump Components ST4125G/ST6125G ComponentsMechanical Float Switch Float SwitchesDesign Features How It WorksMounting The Float Switches Float SwitchesControl Box Specifications CB12/CB14 Control BoxesControl Box Used With Heater Thermal FloatControl Box Installation Control BOX InstallationPhase Power Installation Input Power Cord RequirementsDual Float switch Connections Connecting SW-1WOPA Float Switches to Control BoxFloat Terminal Wire 230/460 VAC Voltage Selection 230/460 VAC Voltage SelectionPhase Power Installation Output To Pump CB12/CB14 Control BOX Power Connections230/460 VAC Input Power Connections 230/460 VAC Output Power ConnectionsSee Table CB12/CB14 Control BOX Wiring LayoutOperation Pump PlacementReset Button Control Box Operation Auto ModeShut-Down Lubrication MaintenanceLong Term Storage Impeller RemovalWater Tank Storage Why perform electrical insulation testing? Electrical Insulation TestingPump Troubleshooting TroubleshootingConnections CB12/CB14 Control BOX Wiring DiagramPage HERE’S HOW to GET Help

ST6125G, ST4125G specifications

The Multiquip ST4125G and ST6125G are versatile and robust generators that cater to a variety of demanding applications in the construction, rental, and industrial sectors. These portable generators are designed to deliver reliable power with user-friendly features that make them ideal for both professional and recreational use.

One of the standout features of the ST4125G and ST6125G models is their impressive power output. The ST4125G is capable of providing up to 4,000 watts of continuous power, while the ST6125G offers a higher capacity of 6,000 watts. This flexibility allows users to choose the model that best suits their needs, whether for powering tools on a job site or serving as backup power during an outage.

Both models are equipped with a rugged 4-stroke gasoline engine that ensures efficient performance and longevity. The engines are designed with thermal protection to prevent overheating, allowing for extended run times without interruption. Additionally, Multiquip has engineered these generators to have low noise levels while operating, making them suitable for use in residential areas and noise-sensitive environments.

The ST4125G and ST6125G come with a variety of outlets to accommodate different power needs, including 120V and 240V outlets. This versatility makes them ideal for powering everything from small hand tools to larger machinery. Furthermore, the generators feature a dual circuit breaker system for added safety, ensuring a reliable and secure power source.

Portability is another major advantage of the Multiquip ST4125G and ST6125G. Both models are designed with a steel frame and feature large wheels and a folding handle, making transport to and from job sites effortless. The compact design also allows for easy storage when not in use.

In terms of maintenance, Multiquip has incorporated user-friendly features that simplify routine checks and servicing. The generators feature easy access to critical components, allowing users to perform maintenance tasks efficiently.

With their combination of power, portability, and user-friendly features, the Multiquip ST4125G and ST6125G generators stand out in the competitive landscape of portable power solutions. Whether for construction projects, outdoor events, or emergency backup, these generators are reliable choices that meet the demands of various users.
Top Page Image Contents