M SERIES M150 | M175 | M250 POOL & SPA PUMP INSTALLATION AND OPERATION MANUAL
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6
PIPE CONNECTION
A barrel union is provided for connecting to the piping from the pool.
The pumps are designed to accept the following PVC Pipes:
•
Inlet PVC Position 40mm pipe ID or 50mm fitting ID PVC pressure pipe fittings
•
Outlet PVC Position 40mm pipe ID or 50mm fitting ID PVC pressure pipe fittings
The use of pipe with a smaller ID than those specified above is not recommended and may cause
damage to the pump voiding warranty.
A straight length of pipe measuring no less than 300mm should be installed in front of the inlet of
the pump allowing quieter and smoother operation.
Suction piping should be free from all air leaks and any humps and hollows, which may cause
suction difficulties.
The outlet piping from the pump should be connected to the inlet connection on the swimming pool
filter (at the filter valve).
For pump installations above water level, it generally requires a check valve in the suction line.
Do not use type ‘P’ (green) plumber’s glue on the barrel unions as this may cause damage to the
material used.
Always install pump for maintenance and service accessibility.
