Note; Repair And Maintenance; Maintenance - A.O. Smith CEWH-A1 Series Installation Instructions Manual

Note:

It is normal that there is water dripping from the safety valve outlet during heating. Under normal
use, the safety valve lever should be opened periodically. If water flows, the relief valve is in good working
condition; if not, please contact local customer service for maintenance.
Declaration: Only qualified service technicians are allowed to repair and maintain this water heater.
Incorrect operation may cause serious injuries or property loss.
Warning-Electric shock: This appliance must be unplugged before being opened up or repaired.
Attention: Before calling for repair service, please use the Troubleshooting lists on the next page as
a guide to correct apparent problems.

Maintenance:

When it is necessary to drain the water heater, close inlet valve, open outlet valve and lift the lever of
pressure-relief safety valve, then the water will flow out of the discharge pipe.
Clean water tank periodically to remove scale.
Step by step guides: 1) Shut off power. 2) Remove pressure-relief safety valve and water inlet. 3) Connect
water outlet to tap water to become water inlet; connect original water inlet to floor drain with a pipe to
become water outlet. 4) Fully open the water inlet valve to wash the tank with large water flow until the
water flowing out of the tank becomes clean. 5) Re-connect water inlet and outlet according to Figure VII
and start to use after leakage test is qualified.
Caution: Water discharged could be very hot, please take care so as not to be scalded.
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CEWH-A1
CEWH-A1 Cylinder Electric Wall-Hung Water Heater CEWH-A1 Cylinder Electric Wall-Hung Water Heater

Repair and Maintenance