Refrigerant Pressure Switches Lps - Hps; Compressor Crankcase Heater - Beko BEKOBLIZZ LC 480 Instructions For Installation And Operation Manual

Technical description
11.14 Refrigerant pressure switches LPS – HPS
To ensure the operational reliability and the protection of the chiller, a series of pressure switches are installed in the
gas cycle.
LPS : Low-pressure appliance on the suction side of the compressor, which is triggered when the pressure dros
below the predetermined value. The values are reset automatically as soon as the nominal conditions are re-
established.
HPS :
The high-pressure appliance on the discharge side of the compressor is activated when the pressure exceeds
the predetermined value. The values are not reset automatically when the nominal conditions are re-
established. Reset takes place manually via a button on the appliance.

11.15 Compressor crankcase heater

During a longer downtime, the oil can intermix with the refrigerant. Therefore, "hydraulic shocks" may occur during the
start-up of the compressor.
To prevent this, a heating resistor was installed in the housing of the compressor which maintains a corresponding oil
temperature when the control panel is switched on and the compressor is idle.
Note!
The heating resistor needs to be switched on at least two hours prior to the start-up of the refrigerant
compressor.
28 BEKOBLIZZ® LC 480-720