20
Version 2.2
Pos. 1 Main switch Pos. 2 Dew-point indicator
Pos. 3 Dryer ON button Pos. 4 Dryer OFF button
Pos. 5 Dryer ON indicator green Pos. 6 Compressor ON indicator yellow
Pos. 7 Low pressure failure Pos. 8 High pressure failure
Pos. 9 Temperature relay failure
Dew-point indicator
The dew-point indicator has 3 zones: Green zone — optimum operating mode; Orange
zone — system overcooled; Red zone — system overheated
REFRIGERANT PRESSURE RELAY S1-S2-S3
In order to ensure safe operation and integrity of the dryer, several pressure relays are
installed in the refrigerant gas circuit.
S1: The fan pressure relay is arranged on the discharge side of the compressor. It is used
to maintain constant temperature and condensate pressure within preset values (air cooling).
Pressure value: R 134.a Start-up at 12 bar (50,0°C) – Shutdown at 9 bar (40,0°C).
R 134.a Start-up at 23 bar (52,0°C) – Shutdown at 19 bar (44,0°C) – Deviation ±1 bar
S2: The low-pressure relay is arranged on the suction side (crankcase) of the compressor.
It is actuated if the pressure falls below the preset value. It is automatically reset when
the nominal pressure value is reached.
429
56 78
Fig. 4.1.3 V.2 RDX-100-360 control panel
To Next Page
Loading...
