Pentair WhisperFlo Pump - Manual (Page 7)

Rev. D 6-5-01 7 P/N 071109
B. Priming the Pump.
1. The pump strainer pot must be filled with water before the pump is initially started. Follow these steps to
prime the pump.
a. Remove the pump lid plastic clamp. Remove the pump lid.
b. Fill the pump strainer pot with water.
c. Reassemble the pump cover and plastic clamp onto the strainer pot. The pump is now ready to
prime.
d. Open the air release valve on the filter, and stand clear of the filter.
e. Turn on the switch or time clock.
f.
When water comes out of the air release valve, close the valve. The system should now be free of air
and recirculating water to and from the pool.
2. For 2-speed pumps:
a. Pump should run on high-speed for priming.
b. The pump should not run longer than 8 minutes before priming is achieved.
SECTION V. TROUBLESHOOTING.
A. Failure to Pump.
1. Pump will not prime - too much air. - Remedy:
a. Check suction piping and valve glands on any suction gate valves.
b. Secure lid on pump strainer pot and make sure lid gasket is in place.
c. Check water level to make sure skimmer is not drawing air.
2. Pump will not prime--not enough water. - Remedy:
a. Make sure suction lines, pump strainer, and pump volute are full of water.
b. Make sure valve on suction line is working and open, (some systems do not have valves).
c. Check water level to make sure water is available through skimmer.
3. Pump strainer clogged. - Remedy:
a. Clean pump strainer pot.
4. Pump strainer gasket defective. - Remedy:
a. Replace gasket.
B. Reduced Capacity and/or Head.
1. Air pockets or leaks in suction line. - Remedy:
a. See item A.1. of this section, above.
2. Clogged impeller. Remedy:
a. Turn off electrical power to the pump.
b. Remove the clamp that holds the volute to the seal plate.
c. Slide the motor and seal plate away from the volute.
d. 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.
(3) Reinstall anti-spin bolt and O-ring.
e. Reinstall wear-ring, diffuser, and O-ring.
f. Reinstall motor and seal plate into volute aligning with keyway at top of volute.
g. Reinstall clamp around seal plate and volute and tighten securely.
3. Pump strainer clogged. - Remedy:
a. Clean suction trap.