Technical data

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SUCTION LIFT OR GRAVITY FEED
The schematic diagrams, figs. 2 and 3, illustrate possible methods of pipework
installation. This pump is designed primarily to be gravity fed, that is, drawing
water from an above ground pool. However, it is possible to draw water from
a sunken pool, providing the suction lift does not exceed the distance
specified for your pump. The suction lift i.e. the vertical distance between the
water level and the pump should not exceed 7 metres.
A foot valve/filter must be fitted to the lower
end of the suction hose, (as illustrated in fig
2), so as to help retain water in the suction
system. Remember.... this is NOT a self priming
pump.
When suction lift is used to draw water into
the pump it is essential that all connections
and hoses are completely air tight, otherwise
the system will not work.
Before pumping it is essential to completely fill
the suction side with water. This is known as
priming the pump and is carried out as
follows:-
1. With the pump, all inlet pipes/hoses and the foot valve in position, slowly
pour water into the outlet port. Wait until all air is expelled...this may take a
minute or two...and fill to the brim before connecting the outlet hose to
the outlet port. The hose is then connected to the water filter.
2. Switch on the pump. Water should start to flow through the system. Check
for leaks and repair as necessary.
Do not allow the pump to run dry, otherwise the seal between the pump and
motor may be damaged. If a leak is noticed at this point it may indicate that
the seal is worn and therefore in need of replacement. Contact your CLARKE
dealer, or the Clarke International Service Department for advice.
Do not place any restriction on the inlet
side of the pump.
Remember - this pump is designed for
pumping CLEAN WATER with small solids
in suspension, ONLY. DO NOT USE for
pumping chemicals or other corrosive
liquids (other than pool purification
chemicals in their correct mix ratio).
Fig 2:-Suction Lift
FIG 3:- Gravity Feed