21/46
EN
No. Description of fault
Cause
Solution
1
No flow
Pressure regulator closed
Inlet shut off valve closed
Purge valve open
Cylinder valve closed
Open pressure regulator
Open inlet shut off valve
Close purge valve
Open cylinder valve
2
Increasing outlet pressure, relief
valve opens
Leakage at pressure regulator
seat
Service through manufac-
turer
3
Increasing outlet pressure,
Relief valve does not open
Emptying of gas cylinder,
thereby pressure drop, 50 bar
version, reason inlet pressure
raises
No failure, standard opera-
tion condition
4
Slight outlet pressure drop
Difference between “no flow”
and flow
No failure, standard opera-
tion condition
5
Massive outlet pressure drop
Flow too high for pressure
regulator
Choose new gas supply
panel for needed pressure
and flow
6
Noises during operation
Flow too high for pressure
regulator
Choose new gas supply
panel for needed pressure
and flow
7
Moisture on pressure regulator
(NO thaw, rain or snow)
Pressure regulator withdraw
energy from the environment
because of depressurizing
No failure, standard opera-
tion condition
8
Icing at pressure regulator (NO
thaw, rain or snow)
Pressure regulator withdraw
energy from the environment
because of depressurizing
Flow to high (N2O, CO2)
No failure, standard opera-
tion condition
Attention: take care of func-
tionality of gauges
Increase gas cylinders
9
Outlet pressure too high
Regulator is adjusted wrong
Seat is broken or dirty
Correct adjustments
Maintenance of regulator
10
Relief valve opens
Inlet pressure is higher than
approved
Check inlet pressure
11
No flow
Relief valve open
Close relief valve
12
Coil/ hose does not fit to the gas
cylinder
Wrong cylinder connection
(pressure, gas type, national
standard)
New acquisition
