Refrigerant Release - Panasonic MDF-DU702VH Service Manual

1.3 Refrigerant release

Preparation：Refrigerant protection equipment (leather gloves, goggles), tools
Procedure：※Wearing leather gloves and goggles because it handles refrigerant.
※Confirm whether there are ignitable ones like electric appliances outdoors.
Install a piercing tool in the high / low pressure service pipe of the product, open the
valve of the dedicated GM (however, VR is not opened), and release the refrigerant
from the long hose to the outdoor.
（Valve open：ＶＣ⇒ＶＧ⇒ＶＬ⇒ＶＨ）
Dedicated GM
Refrigerant port
To Outdoor
Vacuum port
Long hose
Open Shut
○
VC
○
VG
○
VL
○
VH
○
VR
Valve state
Note：Piercing tool is unnecessary if service valve is attached.
Place the detector near the tip of the outdoor long hose. Be sure to use a detector that
can detect HC refrigerant.
Make sure that the release refrigerant is almost gone by the guidelines and detectors of
the dedicated GM.
VR VH
VC
VG
Low pressure side
service pipe
Low temperate H side
Low temperature L side
Pipe position of MDF-DU702VH
-39-
High pressure port
Loew pressure
VL
port
Piercing tool
High temperature H side
High temperature L side
Charge hose
High pressure side
service pipe