134
16. Maintenance Guide
In order to ensure safety and optimal performance of the unit, seasonal inspections on the unit, functional check of
RCCB/ELCB, field wiring and piping have to be carried out at regular intervals. This maintenance should be carried
out by authorized dealer. Contact dealer for scheduled inspection.
1 Air purge valve
Make sure all the piping installations are properly done before carry out below steps.
o
Open Cabinet front plate to access to the Pressure Relief Valve and Air Purge Valve.
o
Turn the plug on the Air Purge Valve outlet anticlockwise by one complete turn from fully closed position.
Air purge valve
Plug (turn
anticlockwise by
one complete
turn)
o
Set the Pressure Relief Valve level “DOWN”.
Pressure relief valve
Pressure
relief valve
Lever
Turn down
or
Pressure relief
valve
Lever
Turn down
Pressure relief valve
o
Start filling water (with pressure more than 0.1 MPa (1 bar)) to the Mono bloc unit via water inlet. Stop
filling water if the free water flow through Pressure Relief Valve drain hose.
o
Turn ON the power supply and make sure Water Pump is running.
o
Check and make sure no water leaking at the tube connecting points.
o
Reinstall the Cabinet front plate by tightening the 2 mounting screws.
2 Water pressure *(0.1 MPa = 1 bar)
Water pressure should not lower than 0.05 MPa (with inspects the Water Pressure Gauge). If necessary add
tap water into the water circuit.
3 Pressure relief valve
o
Check for correct operation of Pressure Relief Valve by turning on the lever to become horizontal.
o
If you do not hear a clacking sound (due to water drainage), contact your local authorized dealer.
o
Push down the lever after finish checking.
o
In case the water keeps drained out from the unit, switch off the system, and then contact your local
authorized dealer.
