【
Cleaning of water filter
】
The water filter should be cleaned according to the manual of water filter, to ensure the water
flow of the water system. It is recommended to be cleaned once in the first month, and then, once
half a year.
【
Cleaning of heat exchanger
】
Heat exchanger should be cleaned once half a year, because after long term running, gap between
the fins of heat exchanger may be clogged up by dust, leaves, plastic films or papers, which will
affect the efficiency of heat exchange, please clean the heat exchanger as follows:
A. Use a vacuum cleaner to clean the surface of the fins, to get rid of the dust or other rubbish.
B. Use a soft nylon brush to clean the fins, rinse by water at the same time (please don't rinse
with high water pressure). If the outdoor unit is located in an oily place and is hard to clean,
please ask for professional service to clean it.
C. After cleaning, please leave the unit at a shady and well-ventilated environment to dry the
surface of the unit.
①
. Avoid splashing water to the electric part when cleaning.
②
. Avoid touching the sharp fins when cleaning, or they may cut your skin. It's recommended
to wear rubber gloves before cleaning.
③
. The fins of heat exchanger are soft, please don't wipe strongly with hard object, or it may
damage the fins.
④
. If the unit is working in a salty environment, please clean the heat exchanger more often.
⑤
. If the fins have corrosion in surface, please move the unit to a better environment.
【
Gas charging
】
The refrigerant plays an important role in delivering energy in cooling or heating. Insufficient
refrigerant affects directly efficiency of cooling and heating. Please pay attention to the following
before adding refrigerant:
A. The work should be done by professionals
B. Please make sure the copper pipe has no leakage before gas charging. If the copper pipes has
leakage, please repair or change the pipes firstly.
C. Don't add too much refrigerant than required, or it may cause a lot of failures, such as high
pressure and low efficiency.
D. This system uses R410A refrigerant, whose pressure is about 1.6 times than that of R22, so
never us R22 or other refrigerant to replace R410A.
E. There must be no air in the refrigerant circulation, because the air will cause abnormal high
pressure, which will damage the gas piping and lower heating or cooling efficiency.
F. If the refrigerant leaks in indoor environment, please ventilate the room.
G. Copper pipe must be used for gas pipe. Never use iron pipe, aluminium pipe or alloy pipe.
4
Service and maintence
3. Maintenance
1
86