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MC • Edition 2022.08 • No
. 278 349 R
ev
. -0
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9. Installation
9.1 General information
• This device can only be installed in
compliance with the rules and stand-
ards applicable and in accordanc
with the local regulations and
authorisantions.
• Install the device in a building or
housing, do not install it outdoors without suitable
protective measures!
• The lifting devices used must be suitable for the
load to be lifted.
• Enough installation space for operation and main-
tenance has to be provided.
• It is recommended to install a filter with a pore size
≤ 50 µm upstream of the regulator.
• The installation must not impair the functioning of
other components.
Check prior to installation!
•
Shut-off valves both on the inlet and outlet side are
closed.
•
Upstream and downstream piping are free from com
-
bustible gas.
•
Prevent explosive gas-air mixture: the room atmosphere
must be monitored for gas leakages. For the US and
Canada, piping shall be purged per NFPA 56, NFPA 54
or per B 149.1.
•
Ensure electrical continuity with use of suitable bonding
straps. Prevent contact voltage and ignitable flashover.
•
The performance data on the type plate corresponds to
the purchase ordering data.
•
Flanges on the inlet side and outlet side of the connect
-
ing lines are parallel with the FRM flanges.
•
The sealing surfaces of the flange are undamaged and
clean.
•
The maximum inlet pressure of the system is lower than
the maximum admissible pressure of the regulator.
•
Protective caps at the connection flange, if any, must be
removed.
•
The minimum distances for the setting and changing
springs must be observed.
•
The pipeline on the inlet side must be free of water and
dirt.
Note during installation!
•
Mounting must be carried out in a tension-free state.
No excessive bending.
•
Tighten the screws crosswise.
•
Tightening torques must be observed.
•
Vent lines and blow-off lines have to be positioned
separately.
•
Vent lines and blow-off lines must lead outdoors: gases
must be able to escape to a non-hazardous environ
-
ment. See section “vent lines”.
•
The impulse lines may not be shut off or isolated from
the gas pressure.
•
The specified distance between the measuring points of
the impulse lines must be observed.
•
The flow direction (arrow) on the housing must be fol
-
lowed.
