Gemas PUMPEX-100M, User Manual

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3. INSTALLATION
Normally the PUMPEX swimming pool pumps
are installed between the skimmer/balance
tank and the swimming pool filter.
The pump should be placed on a flat, solid
foundation with the shaft in horizontal
position and the prefilter cover uppermost. It
must be possible to remove the transparent
cover so that the prefilter basket can be
removed for cleaning.
The suction pipe must have as minimum the
same diameter as the pump suction line with
continuous slope in order to avoid long
priming times. If the suction line exceeds 10
meters, the extra pressure loss should be
considered.
The pipes should be installed to avoid any air
leaksin its interior. The following drawing
shows a correctly fitted piping.
The pipes should be fitted in such a way that
any pressure varioation caused by
temperature changes do not effect the pump.
If the piping is very long and/or high support
the pump in front and behind. It is
reccomendable to put a retention or check
valve at the outlet.
In case of using a suction hose, it must be non-
compressible (with a reinforcement spiral).
The suction pipe/hose should be the shortest
possible in order to assure optimum working
conditions.
It’s recomme ndable to install shutting valves
the both sides in order to isolate the pump.
Note: The pump does not allow to work with
closed discharge valve as it may cause an
increase of the temperature and steam
formation which can damage the pump.
If there is any possibility of operating the
pump with discharge valve closed, it’s
necessary to connect one bypass/mud valve
on the discharge pipe in order to assure a
minimum liquid flow through the pump.