Dungs FRM 100025 HD, Instruction Manual, Page: 138 / 174

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Edition 10.15 • No
. 270 442
Fault on the regulator Possible causes Troubleshooting
There is no gas.
The regulator contains no gas.
Check the gas installation upstream of the regu -
lator.
The SSD is closed. Unlock the SSD.
The regulator provides a
wrong outlet pressure.
The false setpoint spring is installed in the regulator. Replace the setpoint spring.
The required outlet pressure is outside the possible range. Change the model of the regulator.
The inlet pressure is not sufficient.
Check the gas installation or dismount the regu -
lator again.
With no flow volume the
outlet pressure corresponds
to the inlet pressure.
The pulse line is not installed. Close the pulse line.
The pulse line is blocked. Check the pulse line.
The pulse line is leaky. Seal the pulse line.
The control plate is damaged. Replace the control plate.
The control plate seat is damaged. Replace the control plate seat.
The working diaphragm is damaged. Replace the working diaphragm.
The admission pressure compensation diaphragm is damaged.
Replace the admission pressure compensation
diaphragm.
The lever system is damaged. Replace the lever system.
The O-rings in the regulator are damaged. Replace the O-rings of the regulator.
The O-rings of the SSD are damaged. Replace the O-rings of the SSD.
During operation the outlet
pressure corresponds to the
inlet pressure.
The pulse line is not installed. Close the pulse line.
The pulse line is blocked. Check the pulse line.
The pulse line is leaky. Seal the pulse line.
The working diaphragm is damaged. Replace the working diaphragm.
The admission pressure compensation diaphragm is damaged.
Replace the admission pressure compensation
diaphragm.
The lever system is damaged. Replace the lever system.
The outlet pressure drops
if the flow rate of the outlet
pressure is increased.
The desired volume flow exceeds the capacity
of the regulator.
Start the regulator again and replace it.
False dimensions of the gas installation. Increase the nominal values of the pipeline.
The gas filter upstream of the regulator is soiled. Clean the gas filter, replace the filter mat.
The lever system is damaged. Replace the lever system.
The pulse line is blocked. Check the pulse line.
The SSD is damaged. Check the SSD.
Gas escapes at the vent
connection.
The working diaphragm is damaged. Replace the working diaphragm.
The compensation unit is damaged. Replace the control plate.
The O-rings of the compensation axis are leaky. Replace the lever system.