Toplicht BLAKES LAVAC Popular 4610-000, Manual

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27
Operational Solutions
Fault Possible cause Solution
No flushing water
drawn in when
bowl emptied.
Inlet seacock closed.
Failure of vaccum
Inlet hose looped
greater than 5 feet
(1.5m) above water
line.
Inlet pipe or seacock
inlet outside the boat
blocked.
Open inlet seacock and check that the
outlet seacock is open as well.
When the seat and lid are closed and the
pump operated, the bowl should be
sealed for around 30 seconds, i.e. you
cannot lift the lid. Anything less indicates
excess air bleeding into the system.
Check the condition of the seat and lid
seals.
Are all the hose clips tight?
Check air bleed plug is in place and that
the hole is not too large.
In this instance it may be necessary to fit a
non-return valve in the inlet hose just
above the water line.
This maintains a head of water to facilitate
the initial syphoning of flushing water.
In this condition the bowl will seal. Check
seacock by closing it, removing the hose
and then turning on.
Check inlet hose for blockage.
Pump will not
empty the bowl
and is hard to
operate Closed seacock,
blocked hose or
blocked pump.
Stop pumping.
The pump will be hard and then impossi-
ble to operate as it builds up pressure.
You could easily blow a hose connection
off.
Check the hose for blockage from bowl to
pump and from pump to seacock.
The pump is checked via the opening
front cover. If pressure has built up
through excess pumping, be very careful
to ease the front cover slowly.
Do not attempt to remove it completely
until the pressure has gone.