Installation & Operation Manual -
VFH-B 30/36/42 Series
18
8 Maintenance
Regular
m
aintenance and care should be performed by professional personnel, which will prolong the unit life
span.
8.1 Outdoor heat exchanger
Outdoor heat exchanger is required to be cleaned once every two months. Use vacuum cleaner with nylon brush
to clean up dust and sundries on the surface of heat exchanger. Blow away dust by compressed air if it is available.
Never use water to wash the heat exchanger.
8.2 Drain Pipe
Regularly check if the drain pipe is clogged in order to drain condensate smoothly.
8.3 Notice before Seasonal Use
(1) Check if the inlet/outlet of the indoor/outdoor unit is clogged.
(2) Check if the ground wire is earthed reliably.
(3) Check if battery of remote wireless controller has been replaced.
(4) Check if the filter screen has been set soundly.
(5) After long period of shutdown, open the main power switch 8 hours before re-operating the unit so as to
preheat the compressor crankcase.
(6) Check if the outdoor unit is installed firmly. If there is something abnormal, please contact
your
service center.
8.4 Maintenance after Seasonal Use
(1)
Cut off main power supply of the unit.
(2)
Clean filter screen and indoor and outdoor units.
(3)
In the event of rusting, use anti-rust paint to stop spreading of rust.
NOTICE!
During leakage test
s
, never mix oxygen,
or
other dangerous gas
es
into refrigeration circuit.
To avoid
hazard
s
,
please
use nitrogen or refrigerant.
Inverterflex Series
1
9
Inverterflex Series
