139
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. 9.65;
• DN 3”: tab. 9.66;
• DN 4”: tab. 9.67;
• DN 6”: tab. 9.68.
NOTICE!
Tighten the screws according to the cross diagram in paragraph 9.4.2.2.
22
Check the hole in the transfer (19) on the diaphragm holder (10).
WARNING!
Make sure the hole 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 inserting the replacement I/DWR rings, 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. 9.65;
• DN 3”: tab. 9.66;
• DN 4”: tab. 9.67;
• DN 6”: tab. 9.68.
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 cover on
an impact-resistant surface.
32
Undo the screws (32) together with the washers (61).
Содержание ASX 176
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