14
Maintenance Instructions
Maintenance
Fig. 19
Fig. 20
Direction-1
Direction-2
Direction-3
Edge of Air Filter
Edge of Cover
Only authorized service staff is permitted for maintenance service.
Improper maintenance may have risk of serious injury or property
damage.
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Drain the tank if needed: Close water inlet valve, rotate the handle on safety valve, release
the nut connected to joint of tank, and drain water through discharge pipe.
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Clean the tank regularly.
(1) Cut off power.
(2) Screw off safety valve and remove inlet tube on the heater.
(3) Connect water outlet pipe with tap water, fill water through this end. Connectwater inlet
pipe.
with floor drain, discharge water through this end.
(4) Open water inlet valve to get maximum tap water flow, flush the tank until clean water come
out of tank.
(5) Connect water inlet and outlet pipes referring to Fig.7, and check if there is leakage.
Warning:
Ensure heater is disconnected from power source before maintenance to avoid
electric shock.
Notice:
User may do some easy repair works referring to the trouble shooting chart,
before contact local authorized dealer.
Declaration:
Notice:
Be cautious about the hot water discharged from the tank, as it may have risk
to cause scald.
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Clean air filter semiannually to avoid block, which may affect heating efficiency.
(1) Disassembling air filter (refer to Fig. 19). Hold the wedging block on edge of air filter
(nearby mark of “PUSH”), pull toward right side of heater (Direction-1) softly, and pull the
whole filter downward (Direction-2) slowly.
(2) Wash air filter by water and dry.
(3) Assembling air filter (refer to Fig. 20). Insert air filter upward (Direction-3) to fulfill the
cover gap and press filter to get fixed.
