Daikin VRV 5-S Series - 21.3 Checking Compressor Insulation Resistance

21 | Finishing the outdoor unit installation
Installer and user reference guide
115
RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600330-1 – 2020.01
21.2 To close the outdoor unit
NOTICE
When closing the outdoor unit cover, make sure that the tightening torque does NOT
exceed 4.1N•m.
2
1
4
3
1×
PH2
8 mm
21.3 To check the insulation resistance of the compressor
NOTICE
If, after installation, refrigerant accumulates in the compressor, the insulation
resistance over the poles can drop, but if it is at least 1 MΩ, then the unit will not
break down.
▪ Use a 500V mega-tester when measuring insulation.
▪ Do not use a mega-tester for low-voltage circuits.
1 Measure the insulation resistance over the poles.
If Then
≥1MΩ Insulation resistance is OK. This procedure is
finished.
<1MΩ Insulation resistance is not OK. Go to the next step.
2 Turn ON the power and leave it on for 6hours.
Result: The compressor will heat up and evaporate any refrigerant in the
compressor.
3 Measure the insulation resistance again.