Installation Of Compressor; Vacuuming; Full Opening Of Pmv; Refrigerant Charging - Toshiba Super MMU-AP0091H Service Manual

<Installation of compressor>
• Install the compressor in the reverse procedure of removal.
• When removing the compressor, Fasten receptacle terminals of the compressor may be loosened.
Prior to the installation, caulk a little to them with radio pinchers, reinsert them into the compressor,
and then check there is no looseness.
(NOTES)
• Only two hexagonal bolts are provided to a compressor, but it is not lacking.
• The tightening torque of the hexagonal bolt to fix the compressor is 200kg/cm.
• If oil has been extracted from the accumulator, braze the cutoff pipe after pinching.
<Vacuuming>
(In case of single outdoor system>
• Connect vacuum pump to the valve charge ports of the liquid and gas pipes and the check joint at high-
pressure side, and then drive the vacuum pump.
• Vacuum until the vacuum low-pressure gauge indicates 1 (mmHg).
(NOTE)
• Before vacuuming, open PMV fully. Vacuuming may not be executed for the heat exchanger of the outdoor
unit under condition of PMV closed.
(In case of multiple outdoor units system)
• In case of conducting the refrigerant recovery at replacing the compressor, perform vacuuming as
13-3. Process after repair.
<Full opening of PMV>
• Turn on power of the outdoor unit.
• Short CN30 on I/F P .C. board of the outdoor unit.
• Turn off power of the outdoor unit within 2 minutes after short-circuiting.
<Refrigerant charging>
• Add the same amount of refrigerant as the remaining refrigerant refrigerant from the charge port of the
service valve at liquid side.
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