Vacuum Pump Attachment And Evacuation Procedure - Panasonic OCU-CR200VF5 Service Manual

Vacuum Pump Attachment and Evacuation Procedure

Evacuation should be performed after completing the airtight test.
Caution
Please follow local regulations and EN378.
1. Piping connection
1) Connect the joint valve of the service piping (SPK-TU125) and the manifold gauge set
exclusively for CO
2) Connect a vacuum pump and the manifold gauge set by using a charge hose or 1/4" pipe.
The low side gauge for this operation should be able to indicate the vacuum level to be
reached (-0.1 MPa).
Low pressure service valve
Joint valve
2. Evacuation
1) Set the evacuation mode in accordance with "Evacuation Mode".
2) Set the low pressure and high pressure service valves to the Mid-position, the access ports
are open, and operate the vacuum pump.
3) Continue the evacuation until the vacuum gauge indication reaches -0.1MPa and continue
evacuation for an additional 1 to 3 hours.
When the intended vacuum level (-0.1MPa) cannot be reached
Caution
after 2 hours, check the set up for any leaks.
refrigerant by using a CO
2
High pressure service valve
Charge hose or 1/4" pipe
Service piping
Vacuum pump
charge hose or 1/4" pipe.
2
CO charge hose or 1/4" pipe
2
10
CO manifold gauge set
2
Low side
gauge
High side
gauge
Charging
valve