307
REV
AL 182
Use, maintenance and warning instructions
MEDIUM PRESSURE REGULATOR
|
MAINTENANCE AND FUNCTIONAL CHECKS
|
REV. 00
EN
Step Action
1
Undo and remove the screws (64).
NOTICE!
In this step, support the built-in SB/82 slam-shut valve.
2
Remove the O-ring (37) from the flange (9) and replace it, taking care to lubricate it with synthetic grease.
NOTICE!
Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution.
3
Undo the screws (3) together with the toothed washers (60).
4
Take out the plug unit.
5
Remove the spring (47).
6
Unscrew and remove the ring nut (18) with the appropriate tool.
NOTICE!
Refer to table 7.59 of paragraph 7.1 “List of equipment”.
7
Remove and replace the reinforced gasket (19).
8
Fit and fix the ring nut (18) with the appropriate tool.
NOTICE!
Refer to table 7.59 of paragraph 7.1 “List of equipment”.
9
Unscrew and remove the ring nut (1).
10
Remove the O-ring (40) from the plug (2) and replace it, taking care to lubricate it with synthetic grease.
NOTICE!
Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution.
11
Position and secure the ring nut (1).
12
Undo the plug screw (5).
13
Remove the washer (26).
14
Remove the spring (48) and the spring support (4).
15
Undo and remove the screws (22) of the pressure switch.
16
Remove the cover (119) together with the gasket (29).
17
Undo the side screws (36) inside the control pressure switch.
18
Undo the external screws (35).
19
Take out the pressure switch unit.
NOTICE!
For the maintenance procedure of the pressure switch assembly, please refer to par. 9.4.13.
20
Remove the cup (15).
21
Remove the O-ring (42) from the cup (15) and replace it, taking care to lubricate it with synthetic grease.
NOTICE!
Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution.
Summary of Contents for REVAL 182
Page 404: ......
