D
GB
F
E
21
96032-04.2015-DGbF
5
|
Electrical connection
5.8 Function test of the trigger unit MP10
The compressor and the trigger unit MP10 are operational when the H3 LED (green) lights.
Pos
Procedure
LED H1 LED H2 LED H3
red
red
green
1
•
Interrupt power supply (L1 or S1)
OFF
OFF
OFF
•
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)
ON
•
Function check of motor temperature sensor: operational
ON
•
Function check of hot gas temperature sensor: operational
ON
3
•
Interrupt power supply again (L1 or S1)
OFF
OFF
OFF
•
Reconnect terminals 1 or 2 and/or 3 or 4
4
•
Restore the power supply (L1 or S1):
OFF
OFF
ON
•
MP10 is operational again
Before start-up, troubleshooting or making changes to the control power circuit, check the functionality
of the trigger unit:
Operation:
The oil sump heater operates when the compressor is at a standstill.
When the compressor starts up, the oil sump heating switches off.
Connexion:
The oil sump heater must be connected via an auxiliary contact (or parallel wired auxiliary
contact) of the compressor contactor to a seperate electric circuit.
Electrical data: 230 V - 1 - 50/60 Hz, 160 W.
ATTENTION The oil sump heater must generally be connected and
operated!
5.7 Oil sump heater
In order to avoid damage to the compressor, the compressor is equipped with an oil sump heater as
a standart feature.
