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6.4 SERVICE ‘C’ INSTRUCTIONS - Pilot valves
(Every 4 years or 24,000 hours)
REPLACING PILOT VALVES
If the pilot valves are not intented to be serviced, continue to start up the dryer, see page 8
1. Ensure the dryer is shut down and fully depressurised (See page 8, section 4.1)
2. Disconnect and note configuration of the tubing, cables and variation between the pilot valves (Normally Open
and/or Normally Closed)
3. Remove the 4 screws to release the pilot valve assembly
4. Remove the elbows and joints
5. Refit the elbows and joints with thread sealing material to the new pilot valve
6. Refit the pilot valve assembly and tubing
7. Start up the Dryer (page 8)
Figure C.4
