PIETRO FIORENTINI REVAL 182, Use And Maintenance Instructions

Page: 371 / 404

371
REV
AL 182
Use, maintenance and warning instructions
MEDIUM PRESSURE REGULATOR | MAINTENANCE AND FUNCTIONAL CHECKS | REV. 00
EN
Step Action
22 Remove the O-ring (46.3) and the bush (8).
23
Remove the O-ring (46.2) and the bush (9).
24 Take out the O-ring (46.1).
25
Replace the O-rings (46.1, 46.2 and 46.3) and lubricate them with synthetic grease.
NOTICE!
Before inserting the replacement O-rings, clean the retaining slots with a cleaning solution.
26
Remove the O-ring (46.1) and the perforated bush (9).
NOTICE!
Use the equipment (G) from Table 7.59.
27
Insert the O-ring (46.2) and the perforated bush (8).
NOTICE!
• Use the equipment (G) from Table 7.59.
• Align the bush (8) as shown in detail (C)
28
Insert the o-ring (46.3).
NOTICE!
Use the equipment (G) from Table 7.59.
29
Insert and press the fixture (G) together with the O-rings (46.1, 46.2, 46.3) and the perforated bushings (8, 9)
into the valve body (3).
30 Pull out the equipment (G).
31 Insert and screw the stem assembly (5, 6, 7, 8, 9, 10).
32
Remove the O-ring (43) from the valve bracket (1) 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.
33 Turn the device upside down.
34 Undo and remove the outer screws (21).
35 Undo and remove the inner screws (21).
36 Lift the pressure switch.
37 Remove the centring pin (2).
38
Remove the O-rings (41, 42) from the centring pin (2) and replace them, taking care to lubricate them with
synthetic grease.
NOTICE!
Before inserting the replacement O-rings, clean the retaining slots with a cleaning solution.
39 Remove and replace the gasket (40).
40
Fit the centring pin (2) on the valve bracket (1).
41 Assemble the pressure switch to the valve bracket (1).
42 Insert and fix the screws (21).
43 Insert and fix the internal screws (21).
44 Turn the device upside down.