26
Type 1 installations. Above ground
tank and pump outside tank.
1. Remove the priming plug on the
top of the pump and fill the casing
and suction line with water then refit
plug. If there is an isolation valve
fitted on the delivery pipe from the
rainwater tank (as recommended)
this needs to be opened.
If there is an air lock i.e. the pipe and
pump casing is not fully filled with water,
the pump may not draw water. If this is
the case you should repeat the priming
procedure. If the pump still does not
draw properly this may be a fault in the
way the delivery pipe is installed. The
pump should be slightly higher than the
pipe inlet and this should run up hill to
the pump at a slight but consistent slope
so that any air is expelled at the pump
end as the pump is primed.
2. Hold down ‘manual override’ button
on the RainBank to operate pump to
clear trapped air. Make sure an outlet
(tap) is open so that air and water can be
dispelled and ensure the mains water is
turned off until the pump is fully primed.
IMPORTANT
Leaky joins can also cause a loss of
prime. NOTE: The pump must be below
the float switch.
Type 2 and 3 installations.
Submersible pumps inside tank.
Provided the pump is sitting in sufficient
water the pump will self prime and push
air out of the taps and appliances that
are used at the other end. To let this
air out without causing damage, it is
important that:
• All taps connected to the rainwater
system are turned on.
• Toilets connected to the system are
flushed so the cistern fills and any air
is cleared from the line.
PRIMING PUMPS
!
Summary of Contents for RainBank KRBS1
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