Electrical Wiring; Operating Instructions; In Your Own Safety Interest, Always Observe All Relevant; Some Of The Components Mentioned In The Operating - Atlas Copco CD100 Bedienungsanleitung

CD100 – CD140 – CD230

Electrical wiring

The electrical wiring must comply with the local regulations. The air
dryer must be earthed and protected by fuses against short-circuiting.
The four connectors of the timer module (refer to figure 6) have the
following function:
P1 ....... Power supply connector
Provides the general power supply to the unit.
P2 ....... Power supply connector of solenoid valve 1
Provides power supply to solenoid valve 1.
P3 ....... Power supply of solenoid valve 2
Provides power supply to solenoid valve 2.
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! In your own safety interest, always observe all relevant

safety instructions.

! Some of the components mentioned in the operating

instructions were not mentioned before in this manual, e.g.
external inlet valve and external outlet valve. Refer to the
chapter "Installation – Piping" for more detailed information.

Initial start up

To start up the dryer for the first time or after a long period of standstill,
proceed as follows:
1. If installed, open the bypass valves of the dryer.
2. Cut off the air supply from the compressor towards the dryer by
closing the external inlet valve.
3. If installed, close the external outlet valve.
4. Start the compressor and wait for pressure.
5. Slowly open the external inlet valve.
6. Check the connections of the dryer for air leaks and repair if
necessary.
7. Switch the dryer on by putting S1 in position I.
8. Let the dryer operate for several hours with the external outlet
valve closed. Check that the moisture indicator turns blue.
9. Gradually open the external outlet valve.
10. As required, close the bypass valves of the dryer.
! If the application allows air that is not dried optimally, the
valve towards the air consumer may be opened even when
the moisture indicator is not completely blue. In this case, it
will take more time for the desiccant to dry completely and
for the moisture indicator to turn blue.
6
P4........Remote control connector
Allows the connection between the dryer and the compressor
for remote control of the dryer (refer to § Operation).
! Before switching on the main power supply, check the volt-
age requirements in the technical specifications or on the
dryer's data plate.

Start up

If the dryer has not been used for more than 3 months, refer to the
chapter "Initial start up". In all other cases proceed as follows:
1. Cut off the air supply from the compressor towards the dryer by
closing the external inlet valve.
2. If installed, close the external outlet valve between the dryer unit
and the dry air consumer.
3. Slowly open the external inlet valve.
4. Switch the dryer on by putting switch S1 in position I.
5. Gradually open the air outlet valve.
6. As required, close the bypass valves of the dryer.
! Close the external inlet valve in case the compressor needs
to be restarted. The air speed in the start-up phase of the
compressor may damage the desiccant.

During operation

At regular intervals, check the moisture indicator. If it shows pink and
the application allows only dry air, shut down the application and let
the dryer regenerate.

Stopping

To stop the dryer proceed as follows:
1. If installed and if necessary, open the bypass valves of the dryer
so that the application will still receive compressed air.
2. Close the external inlet valve between the compressor and the
dryer and the external outlet valve between the dryer and the dry
air consumer.
3. Let the dryer run for a period without consumption, to
depressurize the vessels.
4. Switch the dryer off by putting S1 in position O.
! If the dryer is stopped for a longer period, close the inlet and
outlet valve to avoid moisture from entering the dryer.
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