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Installation of compressor
• Install the compressor in the reverse procedure of removal.
• When removing the compressor, the terminals may become loose.
If this happens crimp them with pliers and then check there are no looseness.
Note)
• Only two hexagonal bolts are provided to fix the compressor.
• 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 on the liquid, gas pipes and the check joint on the high-
pressure side and then vacuum.
• Vacuum until the vacuum low-pressure gauge indicates 1 (mmHg).
Note)
• Before vacuuming, open PMV1, 2 fully. Vacuuming of the outdoor heat exchanger will not occur if PMV 1
and 2 are closed.
In case of multiple outdoor unit systems
• In the case of conducting the refrigerant recovery at replacing the compressor, perform vacuuming as “13-3.
Process after Repair ”.
Full opening of PMV1, PMV2
• Turn on the power to the outdoor unit.
• Confirm that Bit 1 on SW12 is OFF.
• Short CN30 on I/F P.C. board on the outdoor unit.
• Turn off the power to the outdoor unit within 2 minutes of short-circuiting.
Refrigerant charging
• Add the same amount of refrigerant as the remaining refrigerant from charge port of the liquid service valve.