Cleaning And Maintenance - Haier ES30V-A3 Instruction Manual

Cleaning and Maintenance

The water heater must be repaired or maintained by qualified professionals.
Improper methods may cause serious injury or damage to property.
Cleaning
1. External cleaning
Power must be switched off before cleaning the water heater.
Take a wet cloth and dab it with small quantity of neutral detergent. Lightly wipe the water
heater. Do not use petrol or other solvents. Finally use a dry cloth to wipe, make use to
dry the water heater thoroughly. Make sure not to use detergents containing abrasive
agents (e.g. toothpaste),acidic substances, chemical solvents (e.g. alcohol) or polish to
clean the water heater.
2. Internal cleaning
In order to ensure that the water heater will work with high efficiency, clean the heating
pipe and inner chamber once every three years. Take care not to damage the exterior of
the heating pipe and the protective layer on the surface of the inner chamber. Depending
on the local water quality and usage habit, the magnesium rod should be regularly
replaced. If maintenance is required, please contact the local Maintenance Department.
Check
When the water heater is in use, the safety valve should be checked to remove lime
deposits and to verify that it is not blocked once a month.
To check it, turn the safety valve's small handle on the side of the water intake (take care
not to hurt your hand). If there is water flowing out, the safety valve is working normally.
Please contact the local After-sales Department if no water flows out. In the event of
damage to the safety valve, please replace it with a safety valve of similar specifications.
Regularly engage service personnel to carry out safety inspection and promptly clear the
water heating pipes of the scale. Check also the consumption of the magnesium rod;
change it if consumption becomes excessive.
Not in use for an extended period of time
If the water heater is not used for an extended period of time, please carry out the following
steps:
1. Turn off the water pipe valve.
2. Screw the water drainage pipe to the safety valve's pressure-relief hole; turn on the
safety valve handle.
3. Turn the hot water valve to the maximum (at the same time unscrew the soft sprinkler
pipe from the water outlet valve; take care not be scalded by hot water), drain the inner
chamber of water.
When the water heater needs to be used again, our recommendation is to open hot water
valve before switching on the power in order to prevent accidents. Allow any gas that may
be trapped in the pipe to be discharged. Do not smoke or allow other exposed fire to be near
the opened valve. At the same time, make sure to carefully examine all the parts of the
water heater and ensure that they are in a perfect condition. Make sure to fill the inner
chamber with water before use.
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