Mitsubishi Electric PURY-P72 Service Handbook page 171

[VIII Test Run Mode]
Start
Tum on SW4·3 on the
ae.
Put all indoor units in the test run mode
and run the units in cooling mode.
--"'YES
- - -.... NO
'Refer to the previous page for 'Notes 1-4 in the chart.
Keep the unit running for 5 minutes after
adjusting the refrigerant amount to
determine its adequacy.
Note 2
YES
Gradually add refrigerant from
NO
the service port on the low
pressure side.
Keep the unit running for 5 minutes after adjusting the
refrigerant amount to determine its adequacy. Note 2
Gradually add refrigerant from
NO
the service port on the low
pressure side.
YES
Adjustment complete
Tum off SW4-3 on the
ae.
Note 4
NO
NO
NO
Gradually add refrigerant from
~,....;.;..;;;.~ the service port on the low-
pressure side.
NO
NO
Keep the unit running for
5
minutes
after adjusting the refrigerant amount
and check(Tc-TH3) Note
2
NO
YES
Gradually add refrigerant from Gradually draw out
the service port on the low refrigerant from the service
pressure side.
port
on the low pressure side
&
CAUTION
Do not release the extracted refrigerant into the air.
&
CAUTION
Charge liquid refrigerant (as opposed to gaseous refrigerant) into the system.
'If gaseous refrigerant is charged into the system, the composition of the refrigerant in the cylinder will change and may
result in performance loss.
HWEOB03A
- 161 -
GB