Maintenance; Cleaning The Pump Strainer Basket; Motor Care - Pentair WHISPERFLO VS Installation And User Manual

14

MAINTENANCE

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.
Always disconnect power to the pump at the circuit breaker and disconnect the digital input 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.
To prevent damage to the pump and for proper operation of the system, clean pump strainer and skimmer baskets regularly.

Cleaning the Pump Strainer Basket

The strainer pot is located at the front of the pump and
houses the pump strainer basket.
The strainer basket can be viewed through the strainer
pot lid and should be visually inspected at least once
a week. Regularly emptying and cleaning the strainer
basket will lead to higher filter and heater efficiency and
prevent unnecessary stress on the pump motor.
TO CLEAN THE STRAINER BASKET:
1. Press Start/Stop to stop the pump and shut off all
electrical power to the pump at the circuit breaker.
2. Open the filter air relief valve and relieve all pressure
from the filtration system.
3. Turn the strainer pot lid counter-clockwise and
remove it from the pump.
4. Remove debris and rinse out the basket. Replace the
basket if it is cracked or damaged.
5. Place the basket into the strainer pot. Ensure the
notch in the bottom of the basket is aligned with the
rib in the bottom of the strainer pot.
6. Fill the strainer pot with water up to the inlet port.
7. Clean the lid O-ring and sealing surface of the strainer
pot.
Note: It is important to keep the lid O-ring clean and
well lubricated.
8. Reinstall the lid by placing it onto the strainer pot
and tightening clockwise until the lid handles are
horizontal.
Note: Ensure the lid O-ring is properly placed and is
not being pinched between the lid and strainer pot.
Note: Ensure that the side of the lid marked "Front"
is positioned at the front of the pump.
9. Open the filter air relief valve and stand clear of the
filter.
10. Reestablish electrical power to the pump at the circuit
breaker and start the pump.
11. When a steady stream of water flows from the filter air
relief valve, close the valve.
THIS SYSTEM OPERATES UNDER HIGH PRESSURE. When
any part of the circulating system is serviced, air can enter the
system and become pressurized. Pressurized air can cause
the lid to separate which can result in serious injury, death, or
property damage. To avoid this potential hazard, follow above
instructions.
WHISPERFLO VS and WHISPERFLO
®
VST Variable Speed Pump Installation and User's Guide
®

Motor 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.
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 the motor has been damaged by dirt it may void the
motor warranty.
5. Clean the lid, O-ring, and sealing surface of the
strainer pot regularly.
Protect against moisture
1. Protect from splashing or sprayed water.
2. Protect from extreme weather.
3. If motor internals have become wet - let them dry
before operating. Do not allow the pump to operate if
it has been flooded.
4. If the motor has been damaged by water it may void
the motor warranty.
LID
O-RING
STRAINER
BASKET
DRAIN
PLUGS
Strainer Pot Assembly
INLET
PORT