DC Inverter Multi VRF System
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9 Maintenance and Care
Regular check, maintenance and care can extend unit
’
s service life. Please have a dedicated
person in charge of the management of air conditioners.
9.1 Outdoor Heat Exchanger
Outdoor heat exchanger shall be cleaned regularly, which is at least once every two months.
You can use a dust catcher with nylon brush to clean away the dust on the heat exchanger. If
compressed air source is available, it also can be used to clean the heat exchanger. Do not clean
it with water.
9.2 Drain Pipe
Please check regularly whether drain pipe is blocked. Make sure condensate can be drained
out smoothly.
9.3 Notice before Seasonal Use
(1) Check whether air inlets and air outlets of indoor and outdoor units are blocked;
(2) Check whether ground connection is reliable;
(3) Check whether batteries in the remote controller need replacing;
(4) Check whether air filter is properly installed;
(5) If unit has had power off for a long period of time, it should be power on 8 hours before
operation starts so as to preheat the outdoor compressor;
(6) Check whether outdoor unit is securely installed. If there is any problem, please contact
an authorized service technician.
9.4 Maintenance after Seasonal Use
(1) Disconnect power of the entire system;
(2) Clean the air filter and outer case of indoor and outdoor units;
(3) Clean away the dust and debris on indoor and outdoor units;
(4) If outdoor unit has rust, please apply some paint to it so as to prevent the rust from
growing.
9.5 Parts Replacement
Parts and components can be obtained from authorized distributor.
When you are conducting air tightness test and leakage test, do not mix oxygen, C
2
H
2
or other dangerous gas into
the refrigerant circuit. Use nitrogen or refrigerant to conduct the tests.
