Beko BUDL 700 Specifications Page 22

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Technical description
22 DRYPOINT
®
RS 15 – 1700 HP50 NA
5. Technical description
5.1. Control panel
The control panel illustrated below is the only dryer-operator interface.
1
Main switch
DRYPOINT RS 15-40 HP50 NA – DMC15
2
Electronic control instrument
3
Air and refrigerating gas flow diagram
4
ON/OFF switch with mains detecting light
5
Alarm light
K
1
2 3
P
Q
S
0
0
0
8
DMC15
1
0
ON
sec - min
set
DRYPOINT RS 50-100 HP50 NA – DMC14 DRYPOINT RS 140-450 HP50 NA – DMC14
1
P
Q
S
0
0
1
6
1
0
K
set
2
DMC14
esc
°F
°C
3
P
Q
S
0
0
1
7
K
set
2
DMC14
esc
°F
°C
3
I
ON
1
DRYPOINT RS 550-1700 HP50 NA – DMC14
2
1
5
4
P
Q
S
0
0
1
8
set
esc
DMC14
°F
°C
5.2. Operation
Operating principal The dryer models described in this manual operate all on the same principal. The hot moisture
laden air enters an air to air heat exchanger. The air then goes through the evaporator, also known as the air to
refrigerant heat exchanger. The temperature of the air is reduced to approximately 36°F (2°C), causing water vapor to
condense to liquid. The liquid is continuously coalesced and collected in the separator for removal by the condensate
drain. The cool moisture free air then passes back through the air to air heat exchanger to be reheated to within 15
degrees °F (8 degrees °C) of the incoming air temperature as it exits the dryer.
Refrigerant circuit
-
Refrigerant gas is cycled through the compressor and exits at high pressure to a condenser where
heat is removed causing the refrigerant to condense to a high-pressure liquid state. The liquid is forced through a
capillary tube where the resulting pressure drop allows the refrigerant to boil off at a predetermined temperature. Low-
pressure liquid refrigerant enters the heat exchanger where heat from the incoming air is transferred causing the
refrigerant to boil; the resulting phase change produces a low pressure, low temperature gas. The low-pressure gas is
returned to the compressor, where it is re-compressed and begins the cycle again. During those periods when the
compressed air load is reduced the excess refrigerant is by-passed automatically back to the compressor via the Hot
Gas By-pass Valve circuit.
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