Service Manual
Model No:ES50/80/100V-F1(R)
-9-
To ensure the water heater to work efficiently, the heating elements and the inner tank should be
cleaned once every three years. Take care not to damage the protection coating outside the heating
element and inside the inner tank. The magnesium anode rod should be replaced periodically
according to local water quality and the use habits. Please contact the local service department if you
need maintenance
6-2-3Inspection
The relief valve should be checked once every month during use of the water heater. The methods:
turn the small handle of the relief valve from the side of the inlet pipe (take care not injury your hand).
If water flows out, the relief valve is OK. If no water flows out, please contact the local after-sales
service department. If it is damaged, please replace with a relief valve of the same specifications.
Perform safety inspection by service personnel regularly. Remove the scales on the heating tubes
and inspect consumption of the magnesium anode rod in a timely manner. Replace the magnesium
anode rod if it is consumed excessively.
6-2-4. Not used for a long period
If the water heater is not used for a long period, please:
1. Turn off the water tap.
2. Screw one end of the drain hose onto the relief hole of the relief valve and turn on the relief valve
with the handle.
3. Turn the hot water valve of the water heater to maximum position (unscrew the hose of the shower
nozzle from the outlet valve at the same time. Take care to avoid scalding by hot water) to drain the
inner tank.
When it is used again, to avoid injury, before turning on the power supply of the water heater, it is
recommended to turn on the hot water valve to vent the gasses that may accumulated in the pipeline.
Do not smoke or use open fire near the open valve during this period. Before putting into use,
carefully check that all components of the water heater are in good condition and confirm the inner
tank is full of water
