Mitsubishi Electric PURY-P200 Service Handbook page 115

[ Refrigerant Adjustment Method ]
Start
SW2-4 ON
All indoor units are run in
test cooling mode
Has the initial start-up
mode been completed?
Minimum of
30 minutes continuous
operation
Is TH11
Has the compressor
operating frequency stabilised? Note2
A stable com pressor
frequency.
All indoor units
SH
Is 5K
Note1
Is 10 SC16
Note1
Is TH11
System has the correct
amount of refrigerant
SW2-4 OFF Note4
NO
NO
YES
Add a small amount of refriger-
NO
100˚C ? ant at low pressure service
port.
YES
NO
YES
NO
5K
YES
Has the opening degree of indoor
unit LEV stabilized?Note1
YES
Run the operation for 5 minutes after refrigerant amount adjustment, then judge.
NO
SC11?
YES
Run the operation for 5 minutes after refrigerant amount adjustment, then judge.
NO
30K?
YES
Is 30K SC16?
YES
Run the operation for 5 minutes after refrigerant amount adjustment, then judge.
NO
95˚C ?
YES
YES
NO
❉ Refer to the previous page for Notes 1
through 4.
Gradually add refrigerant from the service
port on the low-pressure side
NO
Gradually add refrigerant from the service
port on the low-pressure side
Gradually add refrigerant from the service
port on the low-pressure side
Gradually add refrigerant from the service
port on the low-pressure side
Caution
Ensure that no refrigerant is released into the atmosphere.
Caution
USE liquid refrigerant to fill the system.
• If gas refrigerant is used to seal the system, the
composition of the refrigerant in the cylinder will change
and performance may drop.
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