Water Pump - Troubleshooting - Monaco LaPalma Owner's Manual

Vibration induced by road conditions can cause the plumbing or pump
hardware to loosen. Check for system components that are loose. Many
symptoms can be resolved by simply tightening the hardware. Check the
following items along with other particulars of the system.
The Water Pump Will NOT Start/Blows the Circuit:
• Check the electrical connections, fuse, breaker, main switch and ground
connection.
• Is the motor hot? The thermal breaker may have triggered. It will reset
when cool.
• Is the voltage present at the switch? Bypass the pressure switch.
• Does the pump operate? Check the charging system for correct
voltage and check the pump for the proper ground connection.
• Look for an open or grounded circuit or motor.
• Check for seized or locked diaphragm assembly (water frozen).
The Water Pump Will NOT Prime/Sputters (No Discharge/Motor runs):
• Is the strainer clogged with debris?
• Is there water in the tank, or has air collected in the hot water heater?
• Is the inlet tubing/plumbing sucking in air at plumbing connections
(vacuum leak)?
• Check for proper voltage with the pump operating.
• Look for debris in the pump inlet/outlet valves or dry/swollen valves.
• Check the pump housing for cracks or loose drive assembly screws.
The Water Pump Will NOT Shut-off/Runs When the Faucet is Closed:
• Make sure the fresh water tank fill valve is completely closed.
• Check output side (pressure) plumbing for leaks and inspect for a leaky
toilet(s) or valves.
• Look for loose drive assembly or pump head screws.
• Are the valves or the internal check valve held open by debris or is the
rubber swollen?
The Water Pump is Noisy or Rough in Operation:
• Check for plumbing which may have vibrated loose.
• Does the mounting surface multiply noise (flexible)?
• Check for mounting feet that are loose or compressed too tight.
• Look for loose pump head to motor screws (three long screws).
• Is the motor with the pump head removed? Is noise coming from the motor
or pump head?
The Water Pump is Rapid Cycling:
• Look for restrictive plumbing/flow restrictors in the faucets or shower
heads.
2004 • LaPalma
Water Systems
Water Pump -
Troubleshooting
6 • 251