Mitsubishi PUHY-P250YJM-A - Page 119

[ VIII Test Run Mode ]
- 110 -
HWE1018A GB
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.
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
Start
Put all indoor units in the test run mode
and run the units in cooling mode.
Has it been at least
30 minutes since
start up?
Note 3
Note 1
Does 8°C [14.4°F] Tc-TH3 12°C [21.6°F] hold true?
Does the following hold true?
Tc-TH3
8°C [14.4°F]
*Refer to the previous page for *Notes 1-4 in the chart.
Note 2
Note 2
Note 2
Note 1
Gradually add refrigerant from
the service port on the low-
pressure side.
Keep the unit running for 5 minutes after
adjusting the refrigerant amount to
determine its adequacy.
Keep the unit running for 5 minutes after adjusting the
refrigerant amount to determine its adequacy.
Turn off SW4-3 on the Outdoor unit.
Turn on SW4-3 on the Outdoor unit.
Adjustment complete
Note 4
Has the initial start-up
mode been completed?
Gradually add refrigerant from
the service port on the low
pressure side.
Gradually add refrigerant from
the service port on the low
pressure side.
Keep the unit running for 5 minutes
after adjusting the refrigerant amount
and check(Tc-TH3)
Gradually add refrigerant from
the service port on the low
pressure side.
Gradually draw out
refrigerant from the service
port on the low pressure side.
Does Tc-TH6 20°C [36°F] hold true?
Does “TH4 100°C[212°F]” hold true?
Has the operating frequency
of the compressor become stable?
Note 1
Does “TH4 95°C[203°F]” hold true?
(Check this item on the unit whose “Tc – TH3” value was
used in the step above.)