Installation; Positioning; Piping; Electrical Wiring - Atlas Copco CD2 Bedienungsanleitung

INSTALLATION

Positioning

It is important to keep the following in mind when installing the dryer:
– Place the dryer at a location where the temperature never
exceeds the limits.
– Provide enough space for maintenance operations on the filters
and the dryers.

Piping

!
When installing the piping, make sure that all pipes are
clean.
To ensure correct operation of the dryer, it has to be fitted properly into
the compressed air system consisting of a compressor, the dryer and
an application.
The recommended installation, as shown in figure 4, can only be used
in case the particular application allows to bypass the dryer.
AR .......Air receiver
BV .......Bypass valves
Together with the external inlet valve and the external outlet
valve, the bypass valves allow the dryer and the filters to be
serviced while non-dried air flows through the bypass system.
D .........Dryer
EIV ......External inlet valve
To cut off the air supply towards the dryer.
EOV.....External outlet valve
To cut off the air supply towards the air consumer.
F1........Compressed air prefilter PD
To remove water and oil droplets from the air entering the
dryer. In this way, it prevents unnecessary overloading of the
dryer and prolongs the life of the desiccant.
F2........Compressed air afterfilter DD
To remove possible dust particles coming from the desiccant.
F3........Compressed air bypassfilter PD
To protect the compressed air system against dirt, water and
oil in case the dryer is bypassed.
Concerning the piping, following checks should be carried out:
– make sure that all pipes, filters, valves, etc. are clean and are
installed correctly with or without bypass system,
– make sure that no external force is exerted on the piping.

Electrical wiring

The electrical wiring must comply with the local regulations. The air
dryer must be earthed and protected by fuses against short-circuiting.
No ON/OFF switch is provided on the dryer. If it should be required, it
has to be installed by the customer.
Refer to figure 5a for the electrical wiring of the 10.5 bar units.
Refer to figure 5b for the electrical wiring of the 16 bar units. The use
of the supplied plug is recommended.
!
Before switching on the main power supply, check the volt-
age requirements in the technical specifications or on the
dryer's data plate.
2904 0104 02

OPERATING INSTRUCTIONS

!
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 plugging the power supply connector or by
switching on the ON/OFF switch (if installed).
The yellow Power On LED should light up permanently (only for
16 bar units).
8. Let the dryer operate for several hours with the external outlet
valve closed. Check that the moisture indicator turn brown/green.
9. Gradually open the external outlet valve.
10. As required, close the bypass valves of the dryer.
!
If the application allows the air that is not dried optimally,
the valve towards the air consumer may be opened even
when the moisture indicator is not completely brown/green.
In this case it will take more time for the desiccant to dry
completely and for the moisture indicator to turn brown /
green.
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NSTRUCTION MANUAL
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