87
ASX 176
Use, maintenance and warning instructions
HIGH PRESSURE REGULATOR
|
COMMISSIONING
|
REV. 00
EN
Step
Action
1
Partially open the air vent valve (6).
2
Completely unscrew the fixing nut and adjusting screw (fig. 8.30) of the pilot (3) to relieve the spring.
3
Open the upstream shut-off valve (V1) very slowly.
NOTICE!
Check the pressure by referring to the pressure gauge (4) located upstream.
4
Turn the pilot adjusting screw (3) clockwise to load the calibration spring until the pre-set downstream pressure
value has been reached.
NOTICE!
Check the pressure referring to the pressure gauge (5) located upstream.
5
Close the drain cock (6).
6
Check that the downstream pressure, after an increase phase, does not exceed the shut-off pressure value
(refer to the SG value on the nameplate, see 2.8).
NOTICE!
• If the downstream pressure exceeds the shut-off pressure value, refer to chapter 10 “Fault
search and troubleshooting” to remove the causes of the malfunction.
• Check the pressure referring to the pressure gauge (5) located upstream.
7
Check all fittings between the shut-off valves (V1, V2) for sealing.
NOTICE!
Check for sealing with a foaming substance.
8
Open the downstream shut-off valve (V2) very slowly until the piping has been filled completely.
NOTICE!
If at the beginning of this operation, the pressure in the downstream pipeline is much lower
than the calibration pressure, shutter the opening of this valve so as not to exceed the maxi-
mum flow rate of the system.
9
Insert and secure the adjusting screw and fixing nut (fig. 8.30) of the pilot (3).
Tab. 8.52.
Summary of Contents for ASX 176
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