8
.
C
H
E
C
K
I
N
G
C
8
.
C
H
E
C
K
I
N
G
C
8-1. Check refrigerant system
TEST SYSTEM FLOW
Conditions: ① Compressor is running.
② The air condition should be installed in good ventilation.
Tool: Pressure Gauge
Technique: ① see
SEE
FEEL ----- The difference between tube's temperature.
TEST ----- Test pressure.
cooling run
Pressure
Lo
Hi
gauge
Pressure
gauge
Lo
Hi
Pressure
gauge
Lo
Hi
O
M
P
O
N
E
N
T
S
O
M
P
O
N
E
N
T
S
② feel ③ test
----- Tube defrost.
heating run
Pressure
Lo
Hi
gauge
Pressure
gauge
Lo
Hi
Pressure
gauge
Lo
Hi
33