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8.4. MEASURES FOLLOWING MAINTENANCE
THE FOLLOWING STEPS MUST BE PERFORMED WHEN THE MAINTENANCE WORKS HAVE BEEN COM-
PLETED AND BEFORE SWITCHING ON THE SYSTEM.
1. Make sure that all tools, materials and other equipment have been removed from work area.
2. Clean the work area and remove any spilled substances, e.g. liquids, processing material or similar.
3. Make sure that safety relevant components are working perfect.
The following steps must be performed when the maintenance works have been completed and before
switching on the system.
1. Make sure that all tools, materials and other equipment have been removed from work area.
2. Clean the work area and remove any spilled substances, e.g. liquids, processing material or similar.
3. Make sure that safety relevant components are working perfect.
9. TROUBLESHOOTING
The following section describes possible causes of malfunction and how to eliminate them. If malfunctions
occur with increasing regularity, shorten the maintenance intervals to reflect the actual load. If malfunctions
occur that cannot be eliminated with the following help, please contact the manufacturer.
9.1. SAFETY NOTES FOR TROUBLESHOOTING
In any case of malfunction, the shut-o valves oft he connected gas cylinder, gas container or bundle must be
closed. Never operate devices with malfunctions under pressure.
WHAT TO DO IN CASE OF MALFUNCTION:
1. Interrupt and ensure gas supply.
2. Depressurize pressure regulators and close valves.
3. Only trained technical sta may eliminate malfunctions.
4. Restore component to its original state.
Description Reason Solution Valve Cylinder
Regulator
Line
Regulator
Gas
Supply Panel
No Flow
(Inlet Gauge
shows pres-
sure, outlet
gauge not)
Pressure
Regulator is
closed
Open pressure
regulator slowly
Close purge
valve
No Flow (Inlet
and Outlet
Gauge show
„0“)
Cylinder Valve
closed Pro-
cessgas Valve
closed Pres-
sure Regulator
closed Cylin-
der coil/ hose
not connected
Initial Start- Up
see point 6
Installation and
initial start-up
No Flow Handwheel
closed
Open hand-
wheel slowly
Increase of
outlet pressure
& relief valve
opens
Leakage in
pressure regu-
lator seat
Repair by
manufacturer
Slight increase
of outlet pres-
sure & relief
valve does not
open
Inlet pressure
drop
No failure, nor-
mal operating
state
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