Open the startup valve.
The startup valve is used to achieve safe pressure compensation at the throttle
diaphragm.
2.1.1 Commissioning
Close outlet gate valve
Fully release the setpoint springs of the regulator RMG 630/640 in the regualting stage
and the load limiting stage (regulator RMG 630 only) by turning the setpoint adjustment
screw anti-clockwise.
Apply inlet pressure slowly.
The startup valve must always be closed again.
Adjust the setpoint value in the load limiting stage at the regulator RMG 630 to
approx. 10 bar above p
a
.
Adjust the output pressure in small steps by turning the setpoint adjustment screw
clockwise until the desired value has been reached. The load limiting pressure at the
RMG 630 will rise automatically.
2.1.2. De-commissioning
Turn the setpoint adjustment screw of the regulating stage anti-clockwise
Slowly close the outlet gate valve
2.2 Special maintenance notices
Due to the maintenance-friendly design the maintenance of the gas pressure regulator is principally limited
to checking the throttle diaphragm. This must be checked for wear and swelling and where necessary be renewed.
Prior to dismantling all gas supplied chambers must be depressurised.
The throttle diaphragm (306) must be inserted into the main valve body without
distortion.
Foam rings (314 and 319) from nominal width DN 80/150 are to be renewed with
every maintenance.
2.2.1 Screw tightening torques M
A
in Nm
screw
item no. 25/50 50/100 80/150 100/200
318 160 160 240 240
nominal width DN
components lubricants RMG part no.
all O rings and
diaphram tensioning bead silicon grease 00 027 081 (tube 0.1 kg)
all fastening screws
and pipe screw connections assembly grease 00 028 267
For designs with noise reduction
the correct position of the relief plates
(328) must be observed ->
The groove of the relief plates
must face upwards
503.20 p.04
2. Gas pressure regulator
2.1 Special operating notices
•
•
•
Caution
!
•
•
•
•
•
•
2.2.2
Lubricants
•
•
•
!
Danger
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