Honeywell HON 5020 User And Maintenance Manual page 51

Maintaining the actuator
assembly
HON 5020 gas pressure regulator with HON 630 pilot
Proceed as follows:
Figure Step Description
1 Disassemble the lid.
CAUTION! The lid is spring-loaded. Risk of
injury due to bouncing up when the screws
are unscrewed. Push the lid down when
unscrewing the screws.
2 Remove the closing spring (1) and the
diaphragm unit (2).
3 Remove the flow restrictor.
If the flow restrictor is damaged: Replace
the flow restrictor with a new one.
4 Remove the O-ring (1), the noise reduction
element (2), and the supporting shim (3).
Replace the O-ring with a new, lubricated
O-ring.
Check the noise reduction element and the
support disc for damage and replace them
if necessary.
5 If the diaphragm is damaged: Dismantle
the diaphragm unit.
Replace the diaphragm with a new dia-
phragm.
Maintenance
51