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Gas Charging
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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 contains R32 refrigerant. Never use other refrigerant other than R32 for service.
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.
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Thanks to the normally very high degree of turbulence in the heat exchanger, there is a set
self-cleaning effect in the channels. However, in some applications the fouling tendency can be
very high, e.g. when using extremely hard water at high temperatures. In
such
cases it is always
possible to clean the exchanger by circulation a cleaning liquid (CIP - Cleaning In Place). Use a
tank with weak acid, 5% phosphoric acid or if the exchanger is frequently cleaned, 5% oxalic acid
Pump the cleaning liquid through the exchanger. This work should be done by qualified person.
For further information, please contact your supplier.
Cleaning of plate heat exchanger
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Antifreeze in Winter
】
In order to avoid the water inside unit freeze and damage the unit , please don't turn off the unit very
often, keep it working or standby when the ambient temp. is below 0
℃.
12. Maintenance
1104
