15
MAX
®
S-Series LED Installation & Operation Manual’s
Main Downpipe Flow Valve
The main downpipe flow valve provides a very
fine control of the flow rate however after making
adjustments it takes the system a few minutes to
stabilize at the new setting. Once you have established
the approximate setting for the valve make very small
adjustments and wait for a few minutes each time. It
may take a number of occasional adjustments to reach a
stable level. When set properly this system removes all
of the noise of water flowing down to the sump.
Maintenance of flow valve
To disassemble the valve, switch off all of the pumps and
allow the water level in the rear chamber to drop below
the rim of the transparent funnel. Once the main
downpipe is clear of water, remove the 4 rubber
plugs from the corners and unscrew the 4 screws
with the Allan key provided. Maintain the valve
assembly vertical and pull it away from the valve
body. Be careful not to let the screws fall out.
In the event of calcium deposits clean both the
valve body and diaphragm with a weak acidic
solution (e.g. vinegar) and rinse thoroughly after
treatment.
When reassembling the valve assembly on the
body, ensure that all 4 screws are tight enough
to give a watertight seal however do not use
excessive force. Replace the rubber plugs.
To replace the diaphragm rotate the handle
clockwise and when free of the boby remove the
restaining pin. To reassemble rotate the handle in
the oposite direction until the diaphragm is fully retracted.
1. 2.
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