Mitsubishi Electric PUHY-200YMF-B Service Handbook page 85

(3) Refrigerant adjustment in cooling season (When the high pressure is 14 kg/cm
Adjustment start
Cooling operations of all indoor unit
in test run mode.
Turn on refrigerant amount adjust-
ment switch (SW2-4) of outdoor unit.
Operations status
stabilized ?
Liquid level of accumulator
indicates AL=0 or AL=2
AL=0
Charge refrigerant from low
pressure service port little by little.
After adjusting the refrigerant
volume, run for 5 minutes and
judge the AL.
Liquid level changed from
AL=0 to AL=1 ?
Finish refrigerant replenishment.
Adjustment finished.
Caution :
• Do not let the drained out refrigerant escape to the outside atmosphere.
• Always be sure to charge with refrigerant from the liquid phase side. (PUHY-P200·250YMF-B)
AL=2
–83–
for PU(H)Y-(P)200·250YMF-B
2 G (1.37MPa) or greater)
YES
NO
Draw out refrigerant little by little
from low pressure service port.
After adjusting the
refrigerant volume, run for 5
minutes and judge the AL.
Liquid level changed from
AL=2 to AL=1 ?
Finish to draw out refrigerant refrigerant.