Maintenance Instruction; Maintenance; Warning - A.O. Smith CEWHR-PE6 User Manual

Warning:

Only A. O. Smith Authorised service personnel should maintain and repair this
water heater. Unauthorised servicing could result in serious injury or property
damage.
While repairing the water heater , please disconnect the power plug from the
socket.
Caution:
Prior to the repair of the water heater , please refer the troubleshooting chart to
rule out all the obvious causes.

Maintenance

If the water heater needs to be drained, close the water inlet valve first, open the drain valve, then

rotate the handle of the relief valve, release the nut connected to the water outlet joint of the inner
tank and drain water from the discharge tube.
It is recommended that the tank should be flushed to remove sediment which may buildup during

operation.Specific operating procedures are as follows:
(1) Disconnect the power
(2) Screw off the relief valve and remove the internal water inlet pipe of the water heater.
(3) Connect the water outlet pipe connection of the water heater to the tap water .
pipeline and fill water from this end, the water inlet pipe connection is connected to floor drain
by pipes and discharge water from this end.
(4) Open the water inlet valve to get a maximum tap water flow, flush the tank till the drained water
from the tank becomes clean.
(5) Connect the water inlet and outlet pipes again according to Fig. 7, and put the water heater into
use after a leakage test.
Caution:
The drained water could have a high temperature, a scald might be caused, please
be careful.
Before installation, check and confirm if water heater power,match up with each other. electricity

meter and wiring
The water heater should be grounded reliably. It is prohibited to connect the earth wire to neutral

wire or tap water pipe.
If the safety valve has been installed by the manufacture, for sake of safe operation.users can not

alter the installation location or block its outlet without permisstion.
Water of 50℃ or above may have risk of scald. Please check water temp by hand and use water

mixing valve to get water in appropriate temperature
Be cautious about the hot water discharge through safety valve, as it may have risk to cause scald.

For any damage of power cord, please contact local authorized dealer for replacement.

Maintenance instructions
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Warning
12
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