Daikin VRV IV - 19.7 To Check the Insulation Resistance of the Compressor

19 | Electrical installation
Installer and user reference guide
112
RXMLQ8 + RXYLQ10~14T7Y1B*
VRV IV system air conditioner
4P543427-1A – 2020.10
L1 L2 L2 N
19.7 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.