Pentair WhisperFlo P-WFL-071 Manuel D'installation page 3

Whisperflo 11-03-2005 17:21
230 Volt - Three phase motors wired to main volt-
age of 3 x 230 Volt require a DELTA connection.
400 Volt -Three phase motors wired to main volt-
age of 3 x 400 Volt require a STAR connection.
VERY IMPORTANT :
• Please check the turning direction of three phase
motors following each connection. If this does not
correspond with the arrow on the motor, two phase
connections in the junction must be reversed.
• An earth safety circuit or breaker switch with a sen-
sitivity of 30 mA is mandatory and must always be
included in the installation.
• For switching the pump, the electrical installation
must also be provided with a multi-polar connec-
tion with a 3 mm contact breaker.
➩ EVERY MOTOR MUST BE PERMANENTLY GROUNDED.
To exclude tension drop off, always select the diam-
eter of the wiring in accordance with the motor
capacity and in function of the distance between the
power supply and the pump.
➩ CONNECTION CABLE DIAMETER MUST BE MINIMUM 2,5 MM
Connections which are not conform to the above
mentioned safety instructions are not covered by the
warranty.
SERVICING
The Whisperflo pump is designed to operate service-
free for many years. If a failure does occur, it will
most likely be a moving part of the pump.
CAUTION :
Always disconnect the power supply to the pump
before servicing .
The replacement of the electrical motor must be
done by a professional.
Pagina 3
Replacement of a defective part :
The motor, mechanical seal, gaskets, seal plate,
impeller, diffuser etc. can be replaced in a few min-
utes without disassembling any piping.
Make replacement as follows :
• Switch off the power. Make sure that all power lines
to the pump are interrupted.
• Remove the 6 bolts of the seal plate.
• Slide out motor/seal plate combination and pull
away from front housing.
• Replace the defective part.
• Inspect the large housing gasket for nicks and cults
and replace if damaged. Clean gasket and apply a
little bit silicone lubricant.
• Install motor/seal plate combination again and take
care of the position of the gasket between housing
and seal plate.
• Reinstall the 6 bolts and tighten securely.
• Connect the pump to the power supply.
TROUBLESHOOTING
Pump will not prime:
• No (or not sufficient) water in strainer pot
• Strainer pot is not sealed off
• Damaged O-ring from the lid
• Water level is below skimmer
• Strainer basket or skimmer basket is clogged
• Air leak in suction line
Motor does not run:
• Power switch is off
• Circuit breaker has tripped
• Pump is off-mode by a timer controlled circuit
• Motor terminal connections are incorrect
• Motor shaft is locked by damaged bearings
• Impeller is locked by debris.
Low flow-high filter pressure
• Filter is dirty
• Restriction in return line
Low flow-low filter pressure
• Strainer basket or skimmer basket is clogged
• Clogged impeller
• Air leak in suction line
• Restriction in suction line
• Reverse rotation of motor (three phase only)
Noisy pump
• Air leak in suction
• Strange elements in pump housing
• Diameter of suction is smaller than required
• Incorrect pump attachment
• Cavitation
Heating of the motor
• Bad or no ventilation
• Size of wiring too small (see electrical connection)
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