EN6
MAINTENANCE
1. Enclosure cleaning
Be sure to switch off the Miniature Circuit Breaker (MCB) beforehand.
• Clean it with moist cloth.
• Never use benzene, thinner, detergent, bleach and such for cleaning purpose.
• Do not spray water to the appliance, nor put wet towels on it.
• Make sure to use suitable cloth to clean the Enclosure surface to avoid scratch.
Note:
• Do not place any material on the appliance.
2. Storage Tank cleaning
Under high temperature condition, most water deposits lime scale (white deposit). To prevent accumulation of
lime scale at Storage Tank and Drain Valve End, operate the Safety Valve once a month to drain the water.
Follow the instructions below:
Note:
• Safety Valve is incorporated to prevent excessive water pressure inside the appliance. In the event the pressure is
exceeding 0.75 ± 0.1 MPa (7.5 ± 1 Bar), the Safety Valve will automatically operate and vent the water through the
Drain Valve End which shall not be closed or blocked.
• Operate the Safety Valve once a month to prevent accumulation of lime scale at the Storage Tank and Drain Valve
End. Close or block the Drain Valve End may cause serious damage to the appliance.
• Storage Water Heater must use water that complies with local water quality standard to avoid contaminants
and other impurities which may cause corrosion to the heater and its components thus can create hazardous
condition. Failure to follow will void the warranty.
How to drain the water:
Switch off the electrical supply.
Turn on Hot Water Faucet of the Mixer Tap to release hot water and allow cold water to fi ll in the Storage
Tank. Release large amount of hot water until the water temperature gradually turns cold.
WARNING
Beware of hot water release from the appliance.
Turn off the Main Water Valve of the main water supply.
Lift up the lever on the Safety Valve to start draining the water. Water must be fl owing at the Drain Valve End.
WARNING
Beware that the water
come out from the
Drain Valve End may
be hot.
After the water in the Storage Tank is fully discharged, push down the lever on the Safety Valve.
Lever
Drain Valve End
Note:
• Make sure to empty the Storage Tank if need to remove the appliance from its mounting.
• After maintenance, make sure the Storage Tank is completely refi lled with water before switching on the electrical
supply. Heating element will be damaged if electrical supply is switched on even for a short time while the
appliance is dry or during fi lling up the Storage Tank with water. Please refer to item
no.4 “Fill the Storage Tank”
at page EN11
.
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