Oil Sump Heater On Hc And Lg Compressors; Capacity Regulator (Accessories) - BOCK HG44e Assembly Instructions Manual

7 | Electrical connection
7.11 Oil sump heater at HC and LG compressors
As the solubility of hydrocarbons and HFO refrigerants in oil can be very high, especially at high
suction pressures, the compressor must be equipped with an oil sump heater. For this reason, a
pump-down circuit is recommended during standstill to reduce the suction-side standstill pressures.
ATTENTION The oil sump heater must generally be connected and operated!
Compressor
HG44e... HC, HG44e... LG
HG56e... HC, HG56e... LG
7.10 Capacity regulator (Accessories)
ATTENTION A fuse (max. 3xlB in accordance with IEC 60127-2-1) corresponding
• In a TT- or TN system, a residual current protection device (RCD)
must be used.
• In an IT system, an insulation monitoring device must be used.
National standards and regulations must be observed.
to the rated current must be placed in front of every magnetic
coil of the capacity regulator as short-circuit protection. The ra-
ted voltage of the fuse must be equal to or greater than the rated
voltage of the magnetic coil. The ability of the fuses to switch off
must be greater than or equal to the maximum assumable short-
circuit current at the installation location.
Capacity regulator DCR14 is not approved for digital capacity
regulation for HC and LG compressors.
Electrical data
230 V - 1 - 50/60 Hz, 160 W
D
GB
F
E
27