GEA HGX6 R134a series Assembly Instruction Manual page 21

5| Electrical connection
5.8 Function test of the trigger unit MP 10
Before start-up, troubleshooting or making changes to the control power circuit, check the functionality
of the trigger unit:
Pos
Procedure
1 • Interrupt power supply (L1 or S1)
• Release the motor temperature sensor connection (1 or 2)
• Release the hot gas temperature sensor (if installed) (3 or 4)
2 • Restore the power supply (L1 or S1)
• Function check of motor temperature sensor: operational
• Function check of hot gas temperature sensor: operational
3 Interrupt power supply again (L1 or S1)
•
• Reconnect terminals 1 or 2 and/or 3 or 4
Restore the power supply (L1 or S1):
4
•
MP 10 is operational again
•
The compressor and the trigger unit MP10 are operational when the H3 LED (green) lights.
LED H1 LED H2 LED H3
red red green
OFF OFF OFF
ON
ON
ON
OFF OFF OFF
OFF OFF ON
D
GB
F
E
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