Instruction Book
97 9829 2115 69
7.6 Precautions Before Storage
Dryer units stored after operation
If the unit will not be started again for a period of up to 6 months:
• Put the correct number of VCI-plates (Volatile Corrosion Inhibitor) in the cubicle. (1 VCI
plate/25L volume, part number VCI-plate 0018 9732 01)
• Close the door of the cubicle. Cover the unit with plastic sheeting to reach down just
over the dryer.
• Store the unit in a clean, dry, well ventilated warehouse. Stand the unit upright in its crate or
on the pallet. The dryer unit is now ready for storage for maximum 6 months. The storage
period remains valid provided that the ambient conditions remain normal (meaning no
excesses of heat, cold or high humidity). If the unit is to be stored for a period longer than
6 months then repeat the storage maintenance procedures once every subsequent 6
months.
• Follow installation checklist before starting.
Transportation
The purpose of these procedures is to ensure continued protection against corrosion or other
damage during transportation.
These instructions also apply to units which (in exceptional cases) are to be returned to Atlas
Copco.
Dryer units
• Carry out the storage instructions.
• Place the original plastic cover over the unit, or cover it up with plastic sheeting secured
with adhesive tape.
• Place the unit in its original crate. If the original crate is not available, construct a wooden
crate strong and safe enough to withstand routine handling by fork lift or slings and crane.
• Apply the shipping data to the crate, using indelible ink. Apply the markings on both sides.
If the original crate is used, delete the old markings.
• Where applicable be sure to include the requisite customs and transport documents, for
shipment with the unit.
Inlet / outlet flanges
When storing the dryer, it is advisable to cover inlet and outlet flanges with tape
(preferably humidity adsorbing).
Inlet, pressure relief, regeneration and check valves
Until further notice, no special precautions should be taken on the inlet valve, pressure
relief valves, regeneration air valves and/or check valves.
Pressure dewpoint sensor
When a pressure dewpoint sensor is installed, make sure that inlet and outlet valves to the
sensor block housing are closed. This to avoid any contamination of the dewpoint sensor while
the dryer is not used. Closing these valves will result in a faster response time.
Also keep in mind that the dewpoint sensor is only calibrated for one year (certificate).
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