Doosan DX60R Shop Manual page 860

2. Check system for vacuum leak;
A. Allow system to sit for 10 minutes and check whether
the system is holding the pressure. If the pressure
has dropped, it must be repaired before proceeding
to the next step.
3. Vacuuming Procedure;
NOTE: If the system is holding the pressure and it has
not changed for 10 minutes, vacuum out the
system for an additional 20 minutes.
A. Turn on the vacuum pump and slowly open both
valves.
B. Allow vacuum pump to run for additional 20 minutes
until the
approximately 750 mmHg.
C. Close both valves and stop the vacuum pump.
4. Installation of Refrigerant Container
Reference
Number
1
2
3
A. Before mounting valve on the container, make sure
the handle is in the counter clockwise most position,
with the puncture pin retracted and the mounting
disk is in the raised position.
B. Attach the manifold gauge center hose to the valve
assembly.
C. Turn the disc in the clockwise direction and securely
mount valve onto refrigerant container.
D. Turn the valve handle in the clockwise direction and
puncture the container seal with the pin.
E. Once the can has been punctured, turn the handle in
the counter clockwise direction so the refrigerant can
flow into the manifold gauge center hose. At this
time, do not open the low and high-pressure valves
of the manifold gauge.
F. Press the manifold gauge low side valve to eliminate
the trapped air in the hose.
Electrical System
Page 48
low-pressure gauge
Description
Handle
Hose Connection
Mounting Disk
Figure 31
dial reads
Figure 32
HDA6069L
1
2
3
HDA6070L
SP001687