Installation - Pentair ONGA 112 Series Owner's Manual

INSTALLATION

a) Preparation for operation
Read these instructions first
Inspect your pump for shipping damage. Report any damage to your Onga
dealer. Make sure the suction piping is free of air leaks and is laid so that
it rises evenly from water source to pump. This makes priming easier and
avoids airlock.
b) Pump Protection
Warranty of these pumps is void unless they are housed correctly and protected
from weather, floods, chemicals, dust, vermin, insects etc. Housing used should
be weather proof and well vented so that motor heat can escape. To obtain best
performanceopumps should be installed as close to water as possible.
Depending on application they do not have to be bolted down.
c) Pump Mounting
The pump must be mounted on a solid, level, vibration free surface.
Moulded pumps can be damaged by connected piping. Pipe should be supported
so the pump casing is not strained by the pipe weight or misalignment.
d) Suction
Suction should be laid so that it rises evenly from water source to pump. This
makes priming easy and avoids airlocks.
Pipes should be the same size or larger than the pump inlet and discharge
threads. If piping is longer than 15m (50ft) then a pipe fiction table should be
consulted to obtain the correct size.
All pipe joints must be sealed to ensure they are airtight and a foot or check
valve must be used in the suction pipe. If using a check valve make sure that
it is installed in correct direction.
e) Discharge
The length and diameter of the discharge hoses or pipe will effect the
pressure and flow rate at which your pump operates. Pressure ratings of all
components must exceed the maximum pressure of the pump by an
appropriate safety factor.
This appliance is not intended for use by young children or infirm persons
without supervision. Children should be supervised at all times when near this
appliance.
Reduction of Capacity with Centrifugal Pump Suction
Total Suction Head
Feet Metres
10 3.0
15 4.6
20 6.1
Please note. Reduction of capacity affects both flow and pressure.
Percentage
of Rated
Capacity
80%
70%
57%
5