Finishing The Outdoor Unit Installation; To Check The Insulation Resistance Of The Compressor - Daikin LREN8A7Y1B Installer And User Manual

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Finishing the outdoor unit installation

18 Finishing the outdoor unit installation

18.1 To check the insulation resistance of the compressor

Installer and user reference guide
122
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
≥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.
Then
LREN8~12A7 + LRNUN5A7
CO₂ ZEAS outdoor unit and capacity up unit
4P704142-1 – 2022.08