16
D3
heatless desiccant air dryer
4.2 service ‘C’ instructions - outlet valves
replacing outlet non-return valves - (every 4 years or 24,000 hours)
If the Outlet valves are not intented to be serviced, continue to page 14
1.
Ensure the dryer is shut down and fully depressurised
(See page 8, section 4.1).
2.
Remove the 8 x M10 socket head cap screws and 8 x
washers to release the outlet manifold from the top
manifold.
3.
Remove 4 x M10 bolts holding the outlet flange
4.
Remove the non return valve from the valve orifice within
the top manifold and discard.
5.
Lightly grease and insert the new non return valves into
the valve orifices within the top manifold ensuring the
valve has been insert in the correct orientation. Refer to
figure C.2.1
6.
Place the valve block to the top manifold and insert the
8 x M10 socket head cap screws and the 8 x washers to
complete the assembly. Refer to page 21-22 and follow
the correct tightening sequence when replacing the valve
block
7.
Refit the flange
8.
Start up the Dryer (page 8), or continue to complete
service C
Outlet Manifold
Return Valves
top manifold
