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5. MAINTENANCE
!
Take the electrical plug out before clean or maintenance.
● Check up frequently to see whether the gas supply pipelines (rubber hose) are in good conditions
without aging, cracks. Pay attention to periodic replacement of rubber hoses. In order to prevent gas
leakage, check the joints of pipelines frequently by using suds to see if there are bubbles given off.
● A water heater must be examined, cleaned after it has been used for a period of time (generally about
half a year) to guarantee normal operation of the heater. Observe the flame frequently. When the flame
turns to be yellow from blue, accompanied by black fume, the heater must be cleaned.
● Clean the casing of the unit with water and neutral cleaner other than any chemical cleaner or volatile
solvent, otherwise the casing will fade and lose luster.
● Clean the filter net at the water inlet of the unit regularly.
● Wipe the casing of the unit with soft and clean cloth often.
● The water heaters must be examined, cleaned periodically by the professional personnel.
● Non-professional personnel can not open the cases of water heaters. Pull out the power plug when
opening the case of a water heater. Do not wet the power socket with water in use to ensure safety.
6. TROUBLESHOOTING
!
!
!
When there are any abnormal phenomena found, such as gas leakage, abnormal burning
When there are any abnormal phenomena found, such as gas leakage, abnormal burning
When there are any abnormal phenomena found, such as gas leakage, abnormal burning
(backfire, deflaming, yellow flame or black fume, etc.), abnormal odors or sounds, etc., or
(backfire, deflaming, yellow flame or black fume, etc.), abnormal odors or sounds, etc., or
(backfire, deflaming, yellow flame or black fume, etc.), abnormal odors or sounds, etc., or
other emergencies happened, close the gas valve immediately, and contact with the
other emergencies happened, close the gas valve immediately, and contact with the
other emergencies happened, close the gas valve immediately, and contact with the
maintenance department or the gas company for disposal.
maintenance department or the gas company for disposal.
maintenance department or the gas company for disposal.
WARNING
WARNING
WARNING
WARNING
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