Operation; Priming The Pump - Pentair WhisperFlo VS 800 Owner's Manual

OPERATION

NEVER run pump dry. Running pump dry may damage seals, causing leakage and
flooding. Fill pump with water before starting motor.
Freezing conditions will damage the unit, as water expands as it freezes. Ensure that
the WhisperFlo VS 800 is located so that it is not prone to freezing, or ensure that the
product is disconnected and dried of water during cold conditions.
Trapped air in system can cause explosion. Ensure all air is out of the system before
operating or testing equipment.
Fire and burn hazard. Modern motors run at high temperatures. To reduce the risk of
fire, do not allow leaves, debris, or foreign matter to collect around the pump motor. To
avoid burns when handling the motor, let it cool for at least 20 minutes before trying to
work on it.
Small children using pool must ALWAYS have close adult supervision.
Pump suction is hazardous and can trap and drown or disembowel bathers. Do not use
or operate pump, pool/spas if a suction outlet cover is missing, broken, or loose. Follow
the guidelines below for a pump installation which minimises risk to users of pool and
spas.
NEVER tighten or loosen trap lid while pump is operating.

1. Priming the pump

It is not necessary to lubricate the
o-ring. The original equipment
O-ring contains a permanent
internal lubricant.
c. Remove the trap lid (turn anti-clockwise).
d. Fill trap tank with water.
e. Check the lid o-ring and sealing surface, ensure there is no dust or debris on either, and replace
the lid (turn clockwise to tighten by hand only - no wrenches!).
f. Open the shut-off valves on the suction and discharge pipes, if present.
g. Release all air from filter, pump and piping system (refer filter owner' s manual). In a flooded
suction system (water source higher than pump), pump will prime itself when suction and
discharge valves are opened and air is released.
h. Switch on power to the pump to start.
i. Pump should start to prime now. Priming time will depend on vertical height of suction lift and
horizontal length of suction piping but is generally between 30 seconds to 3 minutes under
normal installation conditions.
j. The WhisperFlo VS 800 will start slowly but ramp up to high speed for the first 2 minutes to assist
priming. It will then switch to the selected speed.
WhisperFlo VS 800 Owner' s Manual
10
a. Before removing trap lid, SWITCH OFF
POWER SUPPLY to pump.
b. CLOSE SHUT-OFF VALVES on suction and
discharge pipes, if present.
*Should the pump not prime, ensure that all valves are open, lint trap is clear of debris and suctions and suction
pipe end is submersed in water, and that there are no leaks in suction pipe. See troubleshooting guide.