Refrigerant Charging; Remedies To Be Taken In Case Of A Refrigerant Leak - Mitsubishi Electric e Series Service Handbook

[ I Read Before Servicing ]
7. Notes
Apply a vacuum through the check joints on the low pressure sides.
Evacuating the system from the high-pressure side may damage the compressor.

[6] Refrigerant Charging

Cylinder with a siphon
Cylin-
der
Cylinder color R32 is light blue.
Charge refrigerant through the
check joint on the high-pressure side.
1. Reasons
R32 is a single refrigerant with a boiling point of -52°C (-62°F), and can be handled in a similar manner to other single refrig-
erants, such as R22.
2. Notes
When using a cylinder with a siphon, refrigerant is charged in the liquid state without the need for turning it upside down. Check
the type of the cylinder on the label before use.
If the refrigerant leaks out, recharge it in a liquid state. The entire amount of the refrigerant cannot be replaced.

[7] Remedies to be taken in case of a Refrigerant Leak

If the refrigerant leaks out, all of the remaining refrigerant must be replaced with a new charge to maintain the proper composition
of the refrigerant. Repair the leak, and then charge the system with the specified amount of refrigerant (EAHV: 11.5 kg × 4, EACV:
4.7 kg × 4). (Charge refrigerant in the liquid state.)
Refer to "IX [4] Refrigerant Leak."(page 135)
HWE20010
Valve
liquid
- 8 -
Cylinder without a siphon
Cylin-
der
Refrigerant charging in the liquid state
Valve
liquid
Charging refrigerant through the
check joint on the low-pressure side
will create reverse pressure,
resulting in compressor malfunctions.
GB