McQuay M5MSX Spezifikationen Seite 62

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59
M5MSX-2009
Troubleshooting
Check Point (4) – Compressor
Step-by-step troubleshooting guide for identifying compressor failure.
Check Point (4)
Check Compressor
Yes
Unplug all
Compressor
No
Nothing Wrong
with Compressor
No
Yes
Use Multi Meter
Check Resistance /
Connectivity Between
Either Two Terminals
Resistance
Small / Short?
Compressor
Winding Burnt
Change
Compressor
Use Multi Meter
Check Resistance /
Connectivity Between
Either Two Terminals
Use Multi Meter
Check Resistance /
Connectivity Between
Terminals and Body
Change
Compressor
Compressor
Short Body
Resistance
Small / Short?
Check Point (3) – IPM Board
Step-by-step troubleshooting guide for identifying IPM Board error.
Check Point (3)
Check IPM Board
No
Yes
Check DC Voltage
Input ~300Vdc
Unplug Compressor
Wire from IPM
Check Wiring
& Connection
Yes
DC Voltage
~300Vdc?
Short?
Use Multi Meter
Check Connectivity
Between +ve and
-ve Terminals
No
Short?
Use Multi Meter
Check Connectivity
Between +ve and U,
V and W Terminals
Use Multi Meter
Check Connectivity
Between -ve and U,
V and W Terminals
Short?
Nothing Wrong
with IPM Board
Change
IPM Board
Change
IPM Board
Change
IPM Board
Yes
No
Yes
No
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