Instruction Book
89 9829 2115 69
The dryer unit (1) must be installed on a level floor suitable for taking the weight of the dryer.
There must be a free space of 39 in (100 cm) around the dryer.
On both inlet filters ((2) and (3)) a drain tube must be installed. The drain pipes to the drain
collector must not dip into the water. For draining of pure condensate water, install an oil/water
separator (Consult Atlas Copco).
A high-efficiency PD filter (3) is installed downstream of the DD filter (2) (particle removal down
to 0.01 micron and max. oil carry-over of 0.01 ppm) (option).
A MaxLife Fiber Bed Mist Eliminator (MLME) can be installed upstream of the dryer for the
maximum protection against oil carryover. Consult Atlas Copco for details.
An outlet dust filter type DDp (4) (particle removal down to 1 micron) is installed
downstream of the dryer (option).
Should oil vapor and odors be indesirable, a QD carbon filter should be installed downstream
of the DDp filter.
It is recommended to install by-pass pipes over each filter together with ball valves in order
to isolate the filters during service operations, without disturbing the compressed air
delivery.
It is required to install pressure relief valves on each vessel of the dryer when there are ball
valves installed at the inlet and the outlet of the dryer to isolate the dryers from the air net.
For the dryer there is no extra ventilation needed.
Water separator (7): High-efficiency water separator removes 90% of water from the
compressed air when by-passing the dryer. If no WSD is mounted in the compressor, a
WSD must be installed downstream of the vessel.
The drain pipes (8) to the drain collector must not dip into the water. For draining of pure
condensate water, install an oil/water separator. Consult Atlas Copco.
5.3 Positioning
Guidelines
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 39 in (100 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 must be
installed before the CD dryer, in order to prevent free water from entering the dryer.
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