Performing Maintenance On Regulator Unit Re2 - Honeywell HON 380 User And Maintenance Instructions

8.6.2

Performing maintenance on regulator unit RE2

Requirements
Cleaning
Performing mainte-
nance on regulator
unit
HON 380 gas pressure regulator with HON 673/674 controller
Make sure that the following requirements are met:
 The system is not pressurized, see Starting maintenance (see page 41).
WARNING! Mortal danger associated with pressurized components.
Observe the following cleaning instructions:
 Before assembly, all parts must be cleaned in order to remove any foreign
particles (swarf) and soiling.
 If screws, bolts, or washers are replaced with identical new parts, any oil on
these new parts must first be removed.
Proceed as follows:
Figure Step Description
1 Turn the spring adjuster to reduce the
spring tension.
2 Unscrew the flat-head screws (1).
Press down the locking plate (2) to re-
move the half rings (3).
CAUTION! The locking plate is
spring-loaded. Risk of injury due to
springing up when the half rings are
released.
3 Take out the following parts:
 Spring adjuster (1)
 Locking plate (2)
 Washers (3,5)
 Axial bearing (4)
 O-ring (6)
 Spring plate (7)
 Pilot spring (8)
Replace the O-ring (6) with a new, lu-
bricated O-ring.
4 Unscrew and remove the screws (1)
and nuts (2) of the diaphragm hous-
ing cover.
Maintenance
52