Installation; Positioning; Piping; Electrical Wiring - Atlas Copco CD65 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 (approximately 80 cm) around the dryer
for maintenance operations.
– Place the dryer as level as possible and fix it firmly to the
concrete.
– When the compressor has NO built-in water separator, a water
separator has to be installed before the CD dryer, in order to
prevent free water from entering the dryer.

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.
If installed, provide each vessel with pressure relief valves.
WSD....Water separator (optional)
To prevent free water from entering the dryer. The water
separator must always be installed in case of 'Standard Pack
Units'.
!
Never overload the dryer as it will damage the desiccant. It
may be recommended to install the air dryer upstream of the
air receiver to prevent overload (e.g. after extending the dry
air system). Consult Atlas Copco if in doubt.
Concerning the piping, following checks should be carried out:
– plugs and pipes must be removed before connecting the pipes,
– 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.
!
Before switching on the main power supply, check the
voltage requirements in the technical specifications or on
the dryer's data plate.
2904 0177 04

OPERATING INSTRUCTIONS

!
In your own safety interest, always observe all relevant
safety instructions. See page 219.
!
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. Close the air supply towards the PDP-sensor and unplug the
PDP-sensor.
3. Cut off the air supply from the compressor towards the dryer by
closing the external inlet valve.
4. If installed, close the external outlet valve.
5. Start the compressor and wait for pressure.
6. Slowly open the external inlet valve.
7. Check the connections of the dryer for air leaks and repair if
necessary.
8. Switch on the voltage to the dryer.
9. Switch the dryer on by pushing button I on the Elektronikon.
10. Let the dryer operate for several hours with the external outlet
valve closed.
11. Gradually open the external outlet valve.
12. As required, close the bypass valves of the dryer.
13. Press the stop button 0 and switch off the voltage to the dryer.
14. Plug the PDP-sensor.
15. Open the air supply towards the PDP-sensor.
!
If the application allows air that is not dried optimally, the
valve towards the air consumer may be opened even when
the PDP temperature is too high. In this case, it will take
more time for the desiccant to dry completely.

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. Cut off the air supply towards the PDP-sensor.
3. If installed, close the external outlet valve between the dryer unit
and the dry air consumer.
4. Slowly open the external inlet valve.
5. Switch the dryer on.
6. Gradually open the air outlet valve.
7. As required, close the bypass valves of the dryer.
8. Open the air supply towards the PDP-sensor.
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