GM V5 Compact Series VRF Outdoor Unit
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5 Check Items after Installation and Trial Run
5.1 Check Items after Installation
Check Items
Conditions Might Happen
Check
Has the unit been fixed firmly?
The unit may drop, shake or emit noise.
Has the gas leakage be checked?
It may cause insufficient cooling/heating capacity.
Does the unit get proper thermal insulation?
It may cause condensation and dripping.
Does the unit drain well?
It may cause condensation and dripping.
Is the voltage in accordance with the related
voltage specified on the nameplate?
It may cause malfunction or damage the part.
Is the electric wiring and piping connection
installed correctly and securely?
It may cause malfunction or damage the part.
Has the unit been earthed securely?
It may cause electrical leak age.
Is the power cord specified?
It may cause malfunction or damage the part.
Has the inlet and outlet been clogged?
It may cause insufficient cooling/heating capacity.
Has the pipe length and refrigerant charging
amount been recorded?
The refrigerant charging amount is not accurate.
5.2 Trial Run
5.2.1 Check before Trial Run
(1)
Check if the unit appearance and piping system are damaged due to transportation.
(2)
Check if the wiring terminals of the electronic component are loose and the phase sequence is correct.
(3)
Check if the rotation direction of the fan motor is correct.
(4)
Check if all valves in the system are fully opened.
5.2.2 Trial Run
5.2.2.1 Notices
(1)
Before the trial running, make sure the unit is power on and compressor has been preheated for more than N
(see Table 5.2) hours. Touch the unit to check whether it’s normally preheated. Start test operation after unit is
normally preheated, otherwise compressor might be damaged.
Table 5.2
Outdoor Temperature/
℃
N
T>10
N
≥
1
0<T<10
N
≥
2
-10<T<0
N
≥
4
T<-10
N
≥
8