Pentair CHALLENGER VS2 Guide D'installation page 19

19
TROUBLESHOOTING
Diagnosing certain symptoms may require close interaction with, or in close proximity to, components that are energized with
electricity. Contact with electricity can cause death, personal injury, or property damage. When trouble shooting the pump,
diagnostics involving electricity should be cared for by a licensed professional.
Problem
Pump failure.
Reduced capacity and/
or head.
Challenger VS2 Motor Assembly
Possible Cause
Pump will not prime - Air leak, too much air.
Pump will not prime - Not enough water.
Pump stainer gasket is clogged.
Pump strainer gasket is defective.
Air pockets or leaks in suction line.
Clogged impeller.
Pump strainer clogged.
Corrective Action
Check suction piping and valve glands on any suction
gate valves. Secure lid on pump strainer pot and be
sure lid gasket is in place. Check water level to be
sure skimmer is not drawing air.
Be sure the suction lines, pump, strainer, and pump
volute are full of water. Be sure valve on suction line
is working and open (some systems do not have
valves). Check water level to make sure water is
available through skimmer.
Clean pump strainer pot.
Replace gasket.
Check suction piping and valve glands on any suction
gate valves. Secure lid on pump strainer pot and be
sure lid gasket is in place. Check water level to be
sure skimmer is not drawing air.
Turn off electrical power to the pump.
Disassemble (see page 14, 'Pump Disassembly')
Clean debris from impeller. If debris cannot be
removed, complete the following steps:
1. Remove left hand thread anti-spin bolt and o-ring.
2. Remove, clean, and reinstall impeller.
Reassemble (see page 15, 'Pump Reassembly')
Clean suction trap.