Page 10
7. SERVICE ‘A’ INSTRUCTIONS
(Every 6,000 hrs or 12 months)
1. Ensure the dryer is shutdown and
fully depressurized before attempting any
maintenance work.
Refer to:
CH. 6.MAINTENANCE GUIDELINES
2. Remove the 4x M5 screws as shown to
remove the dryer top cover.
3. Remove the 8x M12 cap head screws and 8x
washers to remove the top manifold from the
dryer column and support front shroud.
4. Discard the gasket seal.
5. Lift the wire handle and remove the
cartridge from the dryer column.
6. Check and clean the top manifold and dryer
column as required, paying particular attention to
the gasket sealing faces.
7. Remove the new cartridges and gasket seal
from the service kit provided.
8. Insert 2x new desiccant cartridges and press
them down until they stop and the cartridge is
below the top surface of the dryer column.
9. Insert the new gasket seal placing it into the
gasket groove in the top manifold ensuring it is
fully retained.
10. Ensure both handles are folded flat.
11. Replace the top manifold and secure with the
8x M12 cap head screws tightening to a torque
setting of 80Nm.
NOTE
: Refer to:
CH.
14. MANIFOLD TIGHTENING SEQUENCES
and
follow the correct tightening sequence.
12. The seal between the dryer column and top
manifold should be checked for leaks prior to
fitting the top cover and operating the dryer.
13. Replace the dryer top cover and secure with
the 4x M5 screws. These screws should be hand
tightened only or tightened to a torque setting of
less than 1Nm.
If service A is complete reset the dryer,
Refer to:
NOTE:
Care must be taken when removing the
desiccant cartridges not to damage the top face of
the dryer column. This is a sealing face!
(Sealing face shown as the shaded area)
GASKET SEAL
TOP MANIFOLD
8x M12 CAP HEAD
SCREWS
TOP COVER
DESICCANT CARTRIDGES
4x M5 SCREWS
MODELS:
NBA-070, 090, 110, 120
DESICCANT CARTRIDGE REPLACEMENT
NBK-060, 080, 110, 120
Figure 1.
CH. 13. RESETTING DRYER CONTROLLER
