Collecting The Cooling Liquid From The Accumulator (Only P450-P650 Types) - Mitsubishi Electric PURY-P200 Service Handbook

(19) Attach the crankcase heater.
Note : Attach the appropriate crankcase heater to the appropriate compressor.
(20) Attach the soundproof material to the compressor.
(21) Attach the discharge tempareture themistor, and attach the insulation cover.
(22) Attach the power source wire to the terminal on the compressor.
(23) After vacuuming, calculate the amount of added refrigerant at factory shipment and the amount of added
refrigerant on site, and charge the system.
(24) After reconfirming the power source-wiring phase, apply a megger, attach the terminal cover, turn on the
main power, and check whether the crankcase heater is powered.
(25) Check that the ball valves (both on the liquid and the gas side) are open.
(26) Operate all the indoor units, and check whether they run properly.
(27) If there is something that needs to be improved in the installation or the usage, explain that to the
customers.
Equal oil
pipe joint
Drain oil plug

[7] Collecting the Cooling Liquid from the Accumulator (Only P450-P650 types)

(1) Perform evacuation inside the recovery cylinder.
(2) Connect the check joint for collecting liquid that is derived from the accumulator and the recovery cylinder
with a connection pipe (or hose that has predetermined withstand pressure).
Note : When connecting the check joint and the connecting pipe (hose), extremely low-temperature oil may
flow out. Use some protective equipment, such as leather gloves.
(3) Open the valves of the recovery cylinder while the recovery cylinder is being weighed, and collect the liquid
inside the accumulator into the cylinder.
Note : Allow some capacity when collecting the liquid so that the recovery cylinder will not be flooded.
Use several cylinders when collecting large amount of liquid.
(4) After collecting the liquid, close the valve of the recovery cylinder, and remove the connecting pipe (hose).
Note : When removing the check joint and the connecting pipe (hose), extremely low-temperature oil may
flow out. Use some protective equipment, such as leather gloves.
(5) Charge 3-liter oil from the check joint of the accumulator during evacuation.
Compressor1
Metal fitting1 Flare nut
Soundproof material
Equal oil
Check joint for draining liquid
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Compressor2
Flare nut Metal fitting2