OMEGA AIR A-DRY Series, Инструкция по установке и эксплуатации

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13.2 Replacement of the control valves
The following procedure describes the replacement of the normally opened inlet control
valves and the normally closed purge control valves. Make sure that you do not mix the
valves when replacing the control valves since the normally opened and the normally closed
valves fit into any control valve position on the block. All control valves should be installed
on the correct control valve position or the adsorption dryer will not operate correctly!
Replacement of the control valves procedure:
1. Disconnect the adsorption dryer from the compressed air system and the electrical
power.
2. Make certain that the adsorption dryer is depressurised. You can check this by
inspecting the pressure indicators at the top of the adsorption dryer. (Picture 13.8)
3. Carefully place the adsorption dryer on the side. Picture (13.9)
4. Disconnect the connectors on the coils of the electromagnetic control valves.
5. Unscrew the screws that are fixing the control valves to the block. Picture (13.10)
6. Clean the surface of the block of any condensate or particles.
7. Replace the new valves from the control valves kit (Picture (13.11)) on the block. It is
recommendable that you replace one control valve at the time.
8. The components are placed in the following order: membrane, spring and valve. The
screws can be reused.
9. Make sure that the normally open and the normally closed valves are replaced in the
correct positions. The normally open vales have a small screw in the valve seat.
(13.9)
Tower 1 pressure indicator
Tower 2 pressure indicator
(13.8)