Adjustment Of Hot Gas By-Pass Valve - Beko DRYPOINTRA III 20 Translation Of Original Installation And Operation Manual

Original installa�on and opera�on manual

11.2.1 Adjustment of hot gas by-pass valve

NOTE
INFORMATION
The device is stopped.
1.
2. Inlet / outlet air valves are closed. Compressed air does not flow into the heat exchanger.
Service panels are removed.
3.
A low pressure gauge is connected to the Schrader service valve on the low pressure side of
4.
refrigerant circuit.
A set of hex keys is available.
5.
Illustration
92 | 118
Schrader service valve
Each time a pressure gauge is connected to the Schrader service valve, a part of
refrigerant fluid is discharged in the environment.
•
Connect the pressure gauge to the Schrader service valve only in case of
real malfunction of the refrigerant circuit.
Factory setting of hot gas by-pass valve
The hot gas by-pass valve is adjusted by the manufacturer during the testing phase
of the device and the adjusting screw is sealed with yellow sealant.
In case of malfunction of refrigerant circuit, is possible to recalibrate the by-pass
valve.
Preparatory tasks
Adjustment work
Description / explanation
DRYPOINT
1. Start the device and wait few minutes.
2. Turn the adjustment screw clockwise to reduce the
evaporation pressure or counterclockwise to increase it.
3. Wait for the evaporation pressure to stabilize, until the set
point value 2,3 bar(g), +0,1/-0 bar (33.4 psi(g) +1.5/-0 psi) is
reached.
RA III 20 ...240
®
DRYPOINT ® RA III