171
ASX 176
Use, maintenance and warning instructions
HIGH PRESSURE REGULATOR
|
MAINTENANCE AND FUNCTIONAL CHECKS
|
REV. 00
EN
Step Action
21
Insert and fix the screws (36) according to the following tightening torque:
• DN 2”: tab. 9.75;
• DN 3”: tab. 9.76;
• DN 4”: tab. 9.77;
• DN 6”: tab. 9.78.
NOTICE!
Tighten the screws according to the cross diagram in paragraph 9.4.2.2.
22
ONLY VALID FOR PM/176 DN 2" - 6"
Check the hole in the transfer (19) on the left diaphragm holder (10).
WARNING!
Make sure it is not obstructed.
23
Undo and remove the screws (31).
24
Separate the upstream cover (2) from the upstream mouthpiece (1).
25
Remove and replace the O-rings (40, 48) from the upstream mouthpiece (1), lubricating them with synthetic
grease.
NOTICE!
Before inserting the replacement O-rings, clean the retaining slots with a cleaning solution.
26
Remove and replace the I/DWR ring (52) from the upstream mouthpiece (1).
NOTICE!
Before fitting the replacement I/DWR ring, clean the retaining slots with a cleaning solution.
27
Place upstream cover (2) in upstream mouthpiece (1).
28
Insert and fix the screws (31) according to the following tightening torque:
• DN 2”: tab. 9.75;
• DN 3”: tab. 9.76;
• DN 4”: tab. 9.77;
• DN 6”: tab. 9.78.
NOTICE!
Tighten the screws according to the cross diagram in paragraph 9.4.2.2.
29
Remove and replace the O-ring (48) from the downstream cover (3), lubricating it with synthetic grease.
NOTICE!
Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution.
30
Remove and replace the I/DWR ring (52) from the downstream cover (3).
NOTICE!
Before fitting the replacement I/DWR ring, clean the retaining slots with a cleaning solution.
31
Turn the downstream cover assembly (3) and downstream mouthpiece (4) upside down, placing the down-
stream cover on an impact-resistant surface.
Summary of Contents for ASX 176
Page 32: ...32 ASX 176 EN Use maintenance and warning instructions HIGH PRESSURE REGULATOR SAFETY REV 00 ...
Page 253: ...253 ASX 176 ...
Page 254: ......