Function Test Of The Trigger Unit Int69 G; Oil Sump Heater (Accessories) - BOCK UL-HGX66e/1340 ML 31 Assembly Instructions Manual

5| Electrical connection
5.9

Function test of the trigger unit INT69 G

Before commissioning, after troubleshooting or making changes to the control power circuit, check the
functionality of the trigger unit. Perform this check using a continuity tester or gage.
Gage state
Deactivated state
INT69 G switch-on
Remove PTC connector
Insert PTC connector
Reset after mains on
5.10

Oil sump heater (accessories)

When the compressor is at a standstill, refrigerant diffuses into the lubricating oil of the compressors
housing, depending on pressure and ambient temperature. This reduces the lubricating capacity of
the oil. When the compressor starts up, the refrigerant contained in the oil evaporates out through the
reduction in pressure. The consequences can be foaming and migration of the oil, causing oil shocks
under certain circumstances.
Operation: The oil sump heater operates when the compressor is at a standstill. When the compres-
sor starts up, the oil sump heater switches off again automatically.
Connection: The oil sump heater must be connected via an auxiliary contact (or parallel wired auxil-
iary contact) of the compressor contactor to a separate electric circuit.
El. data: 115 V AC 60 Hz, 160 W.
Relay position
11-12
11-14
11-12
11-12
11-14
Connection to the current path of the safety control chain is not
permitted.
Relay position INT69 G
B2 12 14 11
Fig. 15
US
23