Atlas Copco ZR 200 Instruction Book page 19

Instruction book
Reference
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If the controller detects water in the intercooler or aftercooler drain receiver for too long a period,
a shutdown is generated. If water is detected on the integrated dryer drain receiver for too long a
period, a warning is generated.
The level switch is a capacitive sensor which generates a high signal when no water is present.
The solenoid valves of the intercooler and aftercooler/integrated dryer drains are different. The
solenoid valve of the intercooler drain has a high flow but cannot handle high pressures. The
solenoid valve on the aftercooler/integrated dryer drains has less flow but can handle higher
pressures. It is not allowed to open the valves as they can loose their set point. Special attention
must be paid to the correct wiring of the different level switches and solenoid valves.
The output of the level switch can be called up on the screen of the Elektronikon regulator. The
reading does not indicate whether the solenoid valve is open or closed, but indicates whether the
level switch is detecting water in the collector. Since there is a drain opening delay timer, the
display on the Elektronikon can show "Condensate Drain IC Open", while the solenoid valve is
still closed. Changes to the Elektronikon settings are not allowed. The "Always pressurized" bit
must be activated on aftercooler and integrated dryer drains. On the intercooler it is not allowed
to activate this bit.
A functionality test is possible through the Elektronikon regulator. By performing this test, all
solenoid valves will be opened for a short time (e.g. 15 seconds). Refer to the Elektronikon
chapter for more details.
AIF999999
Description
Solenoid valve
Connector
Sensor
Bushing
Drain receiver
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