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SuperMax
™
Pump Installation and User’s Guide
Section 4
Servicing
This section describes how to service the SuperMax
™
pump.
WARNING —Risk of electrical shock or electrocution.
This pool pump must be installed by a licensed or certified electrician or a qualified pool
serviceman in accordance with the National Electrical Code and all applicable local codes and
ordinances. Improper installation will create an electrical hazard which could result in death or
serious injury to pool users, installers, or others due to electrical shock, and may also cause
damage to property.
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 serviceman, pool users or others due
to electric shock.
Read all servicing instructions before working on the pump.
WARNING — 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.
Pump Disassembly
1. All moving parts are located in the rear sub-assembly of this pump.
Tools required:
a. 1/4 inch socket or open end wrench.
b. 3/8 inch socket or 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 4 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. Remove the three hex head screws holding the diffuser in position.
CAUTION — Be sure not to scratch or mar the polished shaft seal faces; seal will leak if faces are damaged.
f. Hold the impeller securely in place and remove the impeller lock screw by using a flat blade screwdriver
or wrench. 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 (Century
®
)
or 7/16 inch (Franklin) open-end wrench. On A. O. Smith motors, remove the motor canopy, move the
capacitor to one side and hold the shaft with a 7/16 inch open-end wrench.