Service Manual_2018-V1.0
7
Heating system:
Internal heating: heating tube is placed in the heat tank, contact with the water directly for
heating; the manufacturing process of this kind of heating method is simple, thermal efficiency is
high, but it is easy to form limescale, thus resulting in heating tube failure; this kind of heating
method is unsuitable for mineral water and simply filtered tap water particularly.
External heating: The heating body is placed outside the heat tank,
water is heated through heating the tank body; the reliability and
security of this kind of heating method is higher than internal heating,
but the manufacturing process is complex, cost is high, thermal
efficiency is low, power consumption is large, and the heating process is
noisy.This kind of heating method is commonly used for users who
prefer to mineral water or using simple net bucket to filter tap water.
2.3 Precautions
1．To avoid damage to the machine, don't plug the power
cord or push the red switch until water runs out from the
tap of hot water.
2．In case hot (or cold) water is not needed for a long time,
turn off the switch accordingly to save power.
3. In case not to use this machine for a long time, turn off the
switch, then pull the plug out from socket and drain the
remaining water through draining outlet.
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