Service - Pentair Pool Products WhisperFlo Owner's Manual

SECTION III. SERVICE
This pool pump must be installed by a licensed or certified electrician or a qualified pool installer in accordance with
the 2008 National Electrical Code ("NEC") and/or all applicable local codes and ordinances. The specific section of
NEC covering your pump may vary depending on your location. Some states, and/or municipalities may not have
adopted the 2008 edition of the NEC. In this case your state or local code may only be applicable and/or an earlier
edition of the NEC may apply. Please check your local and state codes and regulations before commencing any
installation of this pump. Improper installation could create, among other things, an electrical hazard which may result
in death or serious injury to pool users, installers, or others due to electrical shock, and/or property damage. Always
disconnect power to the pool pump at the circuit breaker before servicing the pump. Failure to do so could result in
death or serious injury to pool users, installers or others (due to electrical shock) and/or property damage.
DO NOT open the strainer pot if pump fails to prime or if pump has been operating without water in the strainer pot. Pumps operated
in these circumstances may experience a build up of vapor pressure and may contain scalding hot water. Opening the pump may
cause serious personal injury. In order to avoid the possibility of personal injury, make sure the suction and discharge valves are open
and strainer pot temperature is cool to touch, then open with extreme caution.
A. Pump Disassembly.
1. All moving parts are located in the rear sub-assembly of this pump.
Tools required:
a. 3/32 inch Allen head wrench.
b. 1/2 inch open end wrench.
c. 9/16 inch open end wrench.
d. Flat blade screwdriver.
2. To remove and repair the motor sub-assembly perform the following procedures.
a. Turn off the pump circuit breaker at the main panel.
b. Drain the pump by removing the drain plugs.
c. Remove the 6 bolts that hold the main pump body (strainer pot/volute) to the rear sub-assembly.
d. GENTLY pull the two pump halves apart, removing the rear sub-assembly.
e. Use a 3/32 inch Allen head wrench to loosen the two holding screws located on the diffuser.
f. Hold the impeller securely in place and remove the impeller lock screw by using a #2 Phillips screwdriver.
The screw is a left-handed thread and loosens in a clockwise direction.
g. Remove the shaft cap located at the back of the motor and hold the shaft secure with a ½ inch open-end
wrench.
h. To unscrew the impeller from the shaft, twist the impeller counterclock- wise.
i. Remove the four bolts from the seal plate to the motor, using a 9/16 inch wrench.
j. If replacing the mechanical seal set, see Section B. Pump Reassembly/Seal Replacement on the next page.
Rev. H 04/20/12
WARNING
RISK OF ELECTRICAL SHOCK OR ELECTROCUTION
WARNING
5 P/N 071109