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© 11.2023
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7.23
7.22
7.25
7.24
• For the functional test of the GPR, let gas flow via the discharge line (venting)
(item 7.11) to the outside atmosphere and read the set regulating pressure on
the outlet pressure gauge (item 7.12).
• It may be necessary to correct the setpoint of the outlet pressure.
This is done by turning the GPR setpoint setting screw (item 7.22) to the right
or left, in order to increase and decrease the setpoint, respectively, after
removal of the GPR sealing cap (item 7.21).
• After closing the discharge line (item 7.11), a constant closing pressure within
the closing pressure class can be read on the outlet pressure gauge (item
7.12).
• Slowly open the shut-off valve (item 7.13), close the discharge line (item 7.11)
and read the set regulating pressure on the outlet pressure gauge (item 7.12).
• It may be necessary to correct the setpoint of the outlet pressure once again.
• Screw on the sealing cap (item 7.15) of the safety shut-off valve (SSV) again.
• Screw on the GPR sealing cap (item 7.21) again.
Changing the control range
Switching to the control range of a different setpoint spring can be done for the SSV as
well as for the GPR while the device is pressurized.
Gas pressure regulator
• Take off the sealing cap (item 7.21) and unscrew the setting screw (item 7.22),
• Pull out the spring plate (item 7.24) with ball (item 7.23) and spring (item 7.25)
and replace the spring with one that fits.
• Screw in the spring plate (item 7.24), the ball (item 7.23) and the setting screw
(item 7.22) again.
• Set the desired setpoint and screw on the sealing cap (item 7.21).
Safety shut-off valve
• Remove the sealing cap (item 7.15) and screw off the pull knob (item 7.14) for
changing the spring of the underpressure shut-off device (item 7.16).
• Screw off the corresponding setting screw (items 7.17 / 7.19) for the upper or
lower trigger level.
• Pull out the spring (item 7.16 / 7.18) and replace it with one that fits.
• Screw in the setting screw (item 7.17 / 7.19) again and fasten the pull knob
(item 7.14) on the spindle again.
• Set the desired setpoint and screw on the sealing cap (item 7.15).
The SSV closes if the overpressure setpoint spring (upper trigger level) is removed from
a pressurized system.
Note
Fig. 7.5
Fig. 7.6
Fig. 7.7
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