Doosan DX225LC, Manual

Page: 117 / 136

Electrical System SP000935
Page 116
Leakage Check
NOTE:
Perform the leakage check after completing
vacuuming process.
1. After attaching the manifold gauge, open the high side
valve.
2. Charge system until the low side gauge dial indicates a
pressure of 1 kg•cm
2
(14 psi) and close the high side
valve.
3. Using a refrigerant leak detector or soapy water check
each joint for leakage.
4. If a leak is detected, check for O-ring damage or correct
tightening torque and replace or repair as necessary.
5. If no leaks are detected, proceed with the charging
process.
Refrigerant Charging
1. Perform the vacuuming procedure, vacuum holding and
leaking tests as described in the proceeding headings.
NOTE:
First charge the refrigerant system with 100g
(3.5 ounces) of refrigerant with the engine off.
Then using the manifold gauges as a guide fully
charge the system with the engine running.
When exchanging refrigerant containers, press
the manifold gauge low side valve to eliminate
air from the charging hose.
2. Charge the system by opening the manifold gauge low side
valve.
Initial charge amount: 100 g (3.5 ounces).
1
HDA6071L Figure 101
Reference
Number
Description
1 Refrigerant Leak Detection Device
WARNING!
For accurate refrigerant leak detection, perform leak
detection procedure in a well ventilated area.
1
2
3
4
5
HDA6072L
Figure 102
Reference
Number
Description
1 To Compressor
2 Low-pressure Side
3 High-pressure Side
4 From Receiver
5 Refrigerant Supply Container