PIETRO FIORENTINI ASX 176, Translation Of Original Instructions

Page: 219 / 254

219
ASX 176
Use, maintenance and warning instructions
HIGH PRESSURE REGULATOR | MAINTENANCE AND FUNCTIONAL CHECKS | REV. 00
EN
Step Action
43
Insert and fix the valve seat (38).
NOTICE!
Take care not to damage the valve seat profile (38) and the O-ring (50).
44 Remove assembly “ A ” (plug) from the valve body (4).
45 Unscrew and remove the pilot nut (2).
46 Remove the spring (21).
47 Remove and replace the plug (17).
48 Remove the upper protection disc (15).
49
Remove and replace the upper diaphragm (16), taking care to lubricate the lanyards with synthetic grease.
NOTICE!
Before inserting the replacement diaphragm, clean the retaining slots with a cleaning solution.
50 Unscrew and remove the nut (25).
51 Remove the lower protection disc (15).
52
Remove and replace the lower diaphragm (16), taking care to lubricate the lanyards with synthetic grease.
NOTICE!
Before inserting the replacement diaphragm, clean the retaining slots with a cleaning solution.
53 Fit the lower protection disc (15).
54
Insert and fix the screws (25) according to the following tightening torque:
• R44/SS > tab. 9.86.
55 Fit the upper protection disc (15).
56
Fit the plug (17).
57
Fit the spring (21).
58
Insert and fix the pilot nut (2) according to the following tightening torque:
• R44/SS > tab. 9.86.
59
Insert assembly “ A ” (plug) from top to bottom into the valve body (4).
NOTICE!
• Take care not to damage the diaphragms (16) during this step;
• The marking on the lower section of the headframe (5) must be parallel to the axis of the hole
for inserting the seat (3) into the valve body (4)
.
60
Insert assembly “ B ” (valve) into the valve body (4).
NOTICE!
• Insert the assembly with the valve seat (38) facing upwards;
• Take care not to damage the O-rings (28, 29) and the valve seat (38).
61
Screw in the nut (26) according to the following tightening torque:
• R44/SS > tab. 9.86.
62 Fit the spring (20).
63 Insert the piston (58) into the cover (1).
64 Fit the covers (1 and 12).