90
ASX 176
EN
Use, maintenance and warning instructions
HIGH PRESSURE REGULATOR
|
COMMISSIONING
|
REV. 00
8.7 - COMMISSIONING PROCEDURE FOR THE ASX 176 REGULATOR WITH BUILT-IN
PM/176 MONITOR AND M/A ACCELERATING VALVE
Fig. 8.26.
Commissioning of the ASX 176 regulator with built-in PM/176 monitor and M/A accelerating valve
Step
Action
1
Partially open the drain cock (6).
2
Completely unscrew the fixing nut and the adjusting screw of the pilots (3, 10) and the M/A accelerating valve
(11).
3
Completely compress the pilot spring (3) by turning the adjusting screw (fig. 8.30) clockwise.
4
Completely relieve the pilot spring (10) by turning the adjusting screw (fig. 8.30) anti-clockwise.
5
Fully compress the M/A accelerating valve spring (11) by turning the adjusting screw clockwise.
6
Open the upstream shut-off valve (V1) very slowly.
NOTICE!
Check the pressure by referring to the pressure gauge (4) located upstream.
7
Slowly increase the downstream pressure by turning the adjusting screw (fig. 8.30) of the monitor pilot (10)
clockwise until the tripping pressure value for the M/A accelerating valve (11) has been reached.
NOTICE!
Check the pressure referring to the pressure gauge (5) located upstream.
8
Turn the adjusting screw of the M/A accelerating valve (11) anti-clockwise to decrease the tripping pressure
calibrated value until gas is released from the gas outlet.
NOTICE!
Check the gas outlet with a foaming substance.
Summary of Contents for ASX 176
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