Oil Replenishing Procedure - Panasonic OCU-CR200VF5 Service Manual

Oil Refill Procedure
Caution
In principle, there is no need for adding oil to the refrigeration unit.
However, if such an operation is required when moving the refrigeration unit or
for other reasons, then comply with the following procedure.
(Any failure of a refrigeration unit resulting from moving is not covered by the
warranty.)
1. Release of refrigerant and Evacuation
1) Carry out the release of refrigeration and the evacuation of the refrigerant circuit in
accordance with the "Refrigerant Releasing Procedure" and "Vacuum Pump Attachment
and Evacuation Procedure".
2) After completing the evacuation, set the high pressure and low pressure service valves to
the back seated position. (The access ports of the high pressure and low pressure service
valves have been closed.)
3) Remove the service piping (SPK-TU125).
2. Addition of oil
1) Attach the service piping for oil (SPK-TU125) to the low pressure service valve.
(Joint valve of the service piping is "CLOSED")
2) Assemble the extension pipe to the joint valve. Make sure that the tip of the pipe reaches the
bottom of the oil container.
3) Set the low pressure service valve to the Mid-position (the access ports are open), and open
the joint valve (oil is sucked up). High pressure service valve have been back seated
position.
4) After completing oil suction, close the joint valve and remove the extension pipe from the
joint valve.
5) Connect a nitrogen cylinder to the joint valve.
Pump the oil remaining in the service piping into the circuit by using nitrogen.
6) After completing this process, set the low pressure service valve to the back seated position,
and remove the service piping and nitrogen cylinder.
Low pressure
service valve
High pressure
service valve
18
Service piping
(SPK-TU125)
Joint valve