Bauer G 120 II V, Инструкция по эксплуатации и список запасных частей

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G 120 II V
Page 50 1st Edition, Rev. 0 Chg. 2
3.2.1.1
Normal Operation
The normally open solenoid valve (1) controls the condensate draining of the intermediate separator (2).
The normally open condensate drain valve (4) controls the condensate draining of the oil and water sepa-
rator. The two valves (1 & 4) are connected together in cascade mode. This means that the operational
state (open or closed) of the solenoid valve (1) causes the same state in the condensate drain valve (4) to
occur. The control air for operating the condensate drain valve (4) is taken from the intermediate separa-
tor (2).
As the compressor is started, the solenoid valve (1) is electrically energized and closes. This allows the
pressure to buildup in the intermediate separator. This pressure buildup results in control air pressing the
piston into the valve seat, closing the condensate drain valve (4).
3.2.1.2
Condensate Drain
Every 15 minutes the Timer de-energizes the solenoid valve (1) for approximately 10 seconds. The sole-
noid valve (1) opens and drains the condensation from the intermediate separator (2). This causes a pres-
sure loss in the intermediate separator and the control air for the condensate drain valve (4). As the
pressure of the control air is dropping, the piston of the condensate drain valve (4) becomes unloaded and
the control air is momentarily vented through a relief port. Then the piston of the drain valve is fully
raised by pressure from the final separator, and the condensate is drained.
3.2.1.3
Start Unloading
The unloading of the compressor during the starting phase is possible because of the lack of control air
immediately after starting the unit. As the unit is switched on the solenoid valve (1) is energized and
closes. After the compressor has attained nominal speed, pressure builds in the intermediate separator and
Figure 3-31
ACD Operation Diagrams
1. Solenoid Valve
2. Intermediate Separator 3. Oil and Water Separator
4. Condensate Drain Valve
N ormal Operation
Condensate Draining
Condensate
Control Air
2
1
4
Condensate
Control Air
2
1
3
4
3