Maintenance And Troubleshooting - Liberty Pumps CSP-237 Manuel D'installation

3. Maintenance and Troubleshooting

Each unit is individually factory tested to ensure proper adjustment and operation. If the unit fails to operate properly, carefully re-read
the instructions to see that they have been followed correctly. Routine maintenance is not required on the pump itself, but associated
connections may require occasional attention. The check valve on the discharge should also be checked for freedom of operation at
the same time.
 NOTE: Liberty Pumps, Inc. assumes no responsibility for damage or injury due to disassembly beyond float removal in the field.
Disassembly, other than at Liberty Pumps or its authorized service centers, automatically voids warranty.
Problem
Pump will not turn
on
Pump runs or hums
but does not pump.
Pump does not turn
off
Pump operates
noisily.
3 Year Limited Warranty
Liberty Pumps, Inc. warrants that pumps of its manufacture are free from all factory defects in material and workmanship for a period of
3 years from the date of purchase. 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 3 years from the
"CODE" (date of manufacture) number noted on the pump nameplate. The manufacturer's 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; if it
has been disassembled, modified, abused or tampered with; if the electrical cord has been cut, damaged or spliced; if the p ump
discharge has been reduced in size; if the pump has been used in water temperatures above the advertised rating, or water containing
sand, lime, cement, gravel or other abrasives; if the product has been used to pump chemicals or hydrocarbons; if a non-submersible
motor has been subjected to excessive moisture; or if the label bearing the serial, model and code 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 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 two years from the date of purchase.
Warranty contains the exclusive remedy of the purchaser, and, where permitted, liability for consequential or incidental damages under
any and all warranties are excluded.
Cause
Blown fuse or other interruption of

power; improper voltage.
Defective switch or build-up on tank

wall restricting free movement of
float switch.
Discharge is blocked or restricted.

Check valve is stuck closed or

installed wrong.
Total lift height has been reached

(see Fig. 2)
Pump impeller is jammed.

Defective switch.

Defective switch or build-up on tank

wall restricting free movement of
float switch.
Foreign objects in impeller cavity.

Broken impeller

©Copyright 2011 Liberty Pumps Inc. All rights reserved
Correction
Check that the unit is securely plugged in.

Have an electrician check all wiring for proper
connections and adequate capacity.
Check that float is free to move. If build-up

restricts float, clean and reinstall. If defective,
replace switch.
Check the discharge line for blockage,

including ice if the line passes through or into
cold areas.
Remove and examine for freedom of

operation and proper installation.
Try routing pipe to a lower level. If not

possible, another pumping station may be
required at a level of roughly half the total lift.
*Disassemble the receiver and bottom base

of pump. Remove foreign material.
Reassemble.
Check that float is free to move. If build-up

restricts float, clean and reinstall. If defective,
replace switch.
Check that float is free to move. If build-up

restricts float, clean and reinstall. If defective,
replace switch.
*Disassemble the receiver and bottom base

of pump. Remove foreign material.
Reassemble.
Consult the factory for information regarding

the replacement of impeller.
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