OMEGA AIR A-DRY Series, Installation And Operating Manual

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13.5 Replacement of the nozzles
If the adsorption dryer operating conditions have changed it is recommendable to contact
your supplier to consider different nozzles for a more efficient and economic operation. Find
more information in the section
6 Efficiency considerations .
If the operating conditions have not changed since the commissioning or the last
maintenance then continue with the following procedure to replace the nozzles:
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 (13.19)
3. Unscrew and pull out the back panel. Picture (13.20)
4. Unscrew the nuts at the top of the adsorption dryer. Picture (13.21)
5. Pull the block connection hose out and remove the upper block.
6. Place the block on a horizontal surface bottom up and clean the bottom surface.
7. Unscrew and remove the nozzles.
8. Screw in the new nozzles. Picture (13.22)
9. Replace the O-ring seals on the blocks with the O-rings found in the service kit.
Remove the used O-rings and wipe any residual condensate and particles from the
blocks before replacing the O-rings into the grooves.
10. Place the upper block back into position, connect the tube, place the back panel into
position and screw the nuts tightly to ensure the proper sealing.
(13.21)
(13.22)
Front panel fixing screw
(13.20)
Tower 1 pressure indicator
Tower 2 pressure indicator
(13.19)