Liberty Pumps LCU-N Series Installation Manual Download Page 4

4 | EN

Copyright © Liberty Pumps, Inc. 2021 All rights reserved.

4196000A

 Troubleshooting

No repair work shall be carried out during the warranty period 

without prior factory approval. Liberty Pumps, Inc. assumes no 

responsibility for damage or injury due to disassembly in the field. 

Dismantling the pump voids the warranty. Servicing the pump 

other than replacing cartridge kit, cleaning of pump inlet or 

impeller should be referred to the factory or its authorized service 

centers.

 pH Level is Below 5.0 

1.

Replace neutralization cartridge using Liberty Pumps 

replacement kit #K001898. See replacement steps above.

 Pump Does Not Run or Hum 

1.

Line circuit breaker may be off, tripped or loose. Have a 

certified electrician check fuse or breaker.

2.

Water level in tank may be too low to activate switch. Add 

more water to tank.

3.

Plug on power cord may not be making contact in receptacle. 

Check security and connection.

4.

Float may be obstructed. Make sure float is free and not 

interfering with the inlet pipe or any other obstruction.

5.

Pump is installed on a non-level surface. Re-level pump.

6.

Consult factory.

 Pump Runs or Hums But Does Not Deliver Water 

1.

Check valve may be installed incorrectly or is defective. Check 

that it is installed properly.

2.

Examine discharge tubing for any kinks or blockages. Check 

that intake tubing or pipe is not obstructed.

3.

Discharge line may be blocked or frozen. Check to see if line 

passes through cold areas or is blocked.

4.

Inlet of pump is plugged or the impeller is jammed. Remove 

the pump screen and clean inlet and impeller.

5.

Vertical lift is beyond pump capability. 

Note

:

 At the pump’s 

maximum lift there will be no flow.

• maximum recommended lift: 17 ft

• maximum lift: 20 ft

 Pump Runs and Removes Water But Does Not Shut Off 

1.

Float is stuck in the ON position. Check to make sure the float 

is free to move up and down without obstruction.

2.

Pump is installed on a non-level surface. Level the pump.

3.

Switch is defective. Consult factory.

 Pump Runs But Delivers Very Little Water 

1.

Vertical lift is approaching the pump’s maximum lift capability.

• maximum recommended lift: 17 ft

• maximum lift: 20 ft

2.

Pump’s inlet is partially blocked. Check that inlet is clear of 

debris.

3.

Discharge line is partially blocked. Check line for blockage.

4.

Check valve is not opening all the way. Check for defective or 

blocked check valve.

 Circuit Breaker Trips or Fuse Blows When Pump Starts 

1.

Fuse or breaker size is too small. Use a 15 Amp breaker.

2.

Other major appliances are on the same circuit. Pump must be 

on its own circuit.

3.

Pump wiring is inadequate or is connected to an extension 

cord. Have a certified electrician check for proper wiring.

4.

Defective motor or switch. Consult factory.

Warranty

  

 Liberty Pumps Wholesale Products Limited 

Warranty

Liberty Pumps, Inc. warrants that Liberty Pumps wholesale 

products are free from all factory defects in material and 

workmanship for a period of three (3) years from the date of 

purchase (excluding* batteries and “Commercial Series” models). 

The date of purchase shall be determined by a dated sales receipt 

noting the model and serial number of the pump. The dated sales 

receipt must accompany the returned pump if the date of return is 

more than three years from the date of manufacture noted on the 

pump nameplate.
The manufacturer's sole obligation under this Warranty shall be 

limited to the repair or replacement of any parts found by the 

manufacturer to be defective, provided the part or assembly is 

returned freight prepaid to the manufacturer or its authorized 

service center, and provided that none of the following 

warranty-voiding characteristics are evident:
The manufacturer shall not be liable under this Warranty if the 

product has not been properly installed, operated, or maintained 

per manufacturer instructions; if it has been disassembled, 

modified, abused, or tampered with; if the electrical cord has been 

cut, damaged, or spliced; if the pump discharge has been reduced 

in size; if the pump has been used in water temperatures above 

the advertised rating; if the pump has been used in water 

containing sand, lime, cement, gravel, or other abrasives; if the 

product has been used to pump chemicals, grease, or 

hydrocarbons; if a non-submersible motor has been subjected to 

moisture; or if the label bearing the model and serial number has 

been removed.
Liberty Pumps, Inc. shall not be liable for any loss, damage, or 

expenses resulting from installation or use of its products, or for 

indirect, incidental, and consequential damages, including costs of 

removal, reinstallation or transportation.

There is no other express warranty. All implied warranties, 

including those of merchantability and fitness for a particular 

purpose, are limited to three years from the date of purchase. 

This Warranty contains the exclusive remedy of the purchaser, 

and, where permitted, liability for consequential or incidental 

damages under any and all warranties are excluded.

*Liberty Pumps, Inc. warrants StormCell

®

 batteries for 1 year from 

date of purchase, and warrants that pumps of its Commercial 

Series are free from all factory defects in material and 

workmanship for a period of 18 months from the date of 

installation or 24 months from the date of manufacture, 

whichever occurs first, and provided that such products are used 

in compliance with their intended applications as set forth in the 

technical specifications and manuals.

 

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