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MC • Edition 04.19 • No
. 278 349
25 … 56
12.3 Commissioning / unlocking/ control of the set values
1. Slowly open the shutoff valve on the inlet side. The
ball valve on the outlet side remains closed.
2. Monitor the pressure rise on the pressure gauge on
the inlet side upstream of the device.
4.0 Venting
4.1 Vent the test section in the atmosphere by using a
suitable hose. Do not use a test burner for venting.
4.2 The test section must be completely filled with gas:
make sure that the test section is free from air by us
-
ing a test burner. Close the stop-cock on the venting
hose.
5.0 Check of the outlet pressure
5.1 Check the closing pressure of the regulator.
5.2 Open the vent valve and check the set value
(outlet pressure) on the pressure gauge and,
if necessary, correct it according to section 11.1
5.3 Close the vent valve, remove the hose.
6.0 Check of the upper shut-down pressure p
do
6.1 SBV installation on the outlet side: block the line
upstream of the SBV.
6.2 Check the upper trip pressure of the SAV:
create wind load on the outlet side (reduction in
pressure pulse)
6.3 Create a lockable connection between the inlet and
outlet side.
6.4 Conduct the inlet pressure in the bypass on the outlet
side through the long opening of the stop-cock.
6.5 Monitor the increase in pressure on the outlet side
on the pressure gauge.
6.6 Avoid inadmissible high pressure on the outlet
side. Stop applying pressure immediately after the
SAV has tripped.
3.1
Press the bypass button valve.
Check increase in downstream pressure until setpoint
pressure is achieved. Then stop pressing bypass
buton valve.
3.2
Operate hand lever to open the valve.
6.7 Read the upper response pressure on the pressure
gauge on the outlet side and compare it with
the nominal value.
6.8 The determined triggering pressure must be
within the response tolerance (AG
o
) of the
nominal value.
6.9 If necessary, correct the response pressure according
to the specifications in section 11.2 and check it again.
7.0 Check of the lower shut down pressure p
du
7.1 Release the pressure in the test section on the outlet
side until the operating pressure is reached.
7.2 Check if gas is available and release it safely in the
atmosphere.
7.3 Monitor pressure drop on the pressure gauge.
7.4 Unlock SAV.
7.5 Close the shut-off fitting on the input side.
7.6 Create the wind load: continue to safely release the
gas in the line on the outlet side into the atmosphere.
7.7 After trip the SAV: 6.7 Read the lower response
pressure on the pressure gauge on the outlet side
and compare it with the nominal value.
7.8 The determined trip pressure must be within
the response tolerance (AG
u
) of the nominal value.
7.9 Close the vent valve, remove the hose, insert the
sealing cap.
7.10 Slowly open the shut-off valve on the inlet side.
3. SAV unlocking:
