Maintenance - universalblue UBT2500-20 Instruction Manual

• The thermostat will automatically control the temperature.
When the water temperature inside the heater has reached
the set temperature, it will switch off automatically, when the
water temperature falls below the set point the heater will be
turned on automatically to restore the heating.

5. MAINTENANCE

Do cut off power supply before maintenance, to avoid
danger like electric shock.
• Check the power plug and outlet as often as possible. Secure
electrical contact and also proper grounding must be
provided. The plug and outlet must not heat excessively.
with low air temperature(below 0 ℃), it is nessary to drain
• If the heater is not used for a long time, especially in regions
water from the heater to prevent damage of the water heater,
due to water freezing in the internal tank.(Refer Cautions in
this manual for the method to drain away the water from the
inner container).
• Clean the outer casing using neutral soapy solutions and
never organic solvent- based abrasive products (alcohol,
petrol, etc.).
• To ensure long reliable water heater operation, it is
recommended to regularly clean the internal tank and remove
deposits on the electric heating element of the water heater,
as well as check condition (fully decomposed or not) of the
magnesium anode and, if necessary, replace it with a new
one in case of full decomposition. Tank cleaning frequency
depends on hardness of water located in this territory.
Cleaning must be performed by special maintenance
services. You can ask the seller for address of the nearest
service center
• The water heater is equipped with a thermal switch, which
cuts off power supply of the heating element upon water
overheating or its absence in the water heater. If the water
heater is connected to the mains, but water is not heated and
32