Servicing; Motor And Drive Care; Shaft Seal Replacement; Pump Disassembly - Pentair Pool Products CC50 Owner's Manual

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SERVICING

Always disconnect power to the IntelliFlo
communication cable before servicing the pump. Failure to do so could result in death or serious injury to service people, users
or others due to electric shock. Read all servicing instructions before working on the pump.
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, be sure the suction and discharge valves are open and strainer pot
temperature is cool to touch, then open with extreme caution.
Be sure not to scratch or mar the polished shaft seal faces; seal will leak if faces are damaged. The polished and lapped faces
of the seal could be damaged if not handled with care.

Motor and Drive Care

Protect from heat
1. Shade the motor from the sun.
2. Any enclosure must be well ventilated to prevent
overheating.
3. Provide ample cross ventilation.
4. Provide a minimum clearance of 3-inches behind the
motor fan for proper circulation.
Protect against dirt
1. Protect from any foreign matter.
2. Do not store (or spill) chemicals on or near the motor.
3. Avoid sweeping or stirring up dust near the motor
while it is operating.
4. If a motor has been damaged by dirt it may void the
motor warranty.
Protect against moisture
1. Protect from continuous splashing or continuous
sprayed water.
2. Protect from extreme weather such as flooding.
3. If motor internals have become wet - let it dry before
operating. Do not allow the pump to operate if it has
been flooded.
4. If a motor has been damaged by water it may void
the motor warranty.
5. Be sure to close the keypad cover after every use.

Shaft Seal Replacement

The Shaft Seal consists primarily of two parts, a rotating
ceramic seal housed in the impeller and a stationary
spring seal in the sealplate. The pump requires little or
no service other than reasonable care, however, a shaft
seal may occasionally become damaged and must
be replaced.
Note: The polished and lapped faces of the seal could
be damaged if not handled with care.

Pump Disassembly

Tools required:
•
3/32-inch Allen head wrench
•
Two (2) 9/16-inch open end wrenches
•
1/4-inch Allen head wrench
• No. 2 Phillips head screwdriver
•
Adjustable wrench
INTELLIFLO VSF Variable Speed and Flow Pump Installation and User's Guide
®
VSF Variable Speed and Flow Pump at the circuit breaker and disconnect the
®
To remove and repair the motor subassembly, follow the
steps below:
1. Turn off the pump circuit breaker at the main panel.
2. Disconnect the RS-485 communication cable from
the pump (if connected to pump).
3. Drain the pump by removing the drain plugs. No tools
are required.
4. Remove the four (4) Phillips head screws from the
outer corners of the keypad.
5. Disconnect the keypad from the drive and set it to
the side in a safe place.
6. Remove the three (3) Phillips head screws, located
inside the drive, that anchor the drive to the motor.
7. Remove the drive by lifting upwards to separate it
from the motor.
8. Use the 9/16-inch wrenches to remove the six (6)
bolts that hold the housing (strainer pot/volute) to the
rear subassembly.
9. Gently pull the two pump halves apart, removing the
rear subassembly.
10. Use a 3/32-inch Allen head wrench to loosen the two
(2) holding screws located on the diffuser.
11. Hold the impeller securely in place and remove
the impeller lock screw by using a Phillips head
screwdriver. The screw is a left-handed thread and
loosens in a clockwise direction.
hands. Pentair recommends that safety gloves be worn when holding
the impeller during disassembly and reassembly.
12. Use a 1/4-inch Allen head wrench to hold the motor
shaft. The motor shaft has a hex-shaped socket on
the end which is accessible through the center of the
fan cover.
13. To unscrew the impeller from the shaft, twist the
impeller counterclockwise.
14. Remove the four (4) bolts from the seal plate to the
motor, using a 9/16-inch wrench.
15. Place the seal plate face down on a flat surface
and tap out the carbon spring seat.
16. Clean the seal plate, seal bore, and the motor shaft.
- Pump illustrated parts view on the next page -
The pump impeller may have sharp edges
that could potentially cut or scratch the user's