GCE druva VPLDSMAR Gebrauchsanleitung Seite 16

8.3 MAINTENANCE WORK
8.3.1 CLEANING
NOTE!
•
All cleaning agents must be compatible with the materials of the installed component.
EN
8.3.2 REQUIREMENTS FOR MAINTENANCE
CHECK BEFORE MAINTENANCE START, IF:
•
no gas supply is connected to the shut-off valve
•
shut-off valve is depressurized
•
no process gas is inside the shut-off valve
•
shut-off valve is purged and filled with Nitrogen
8.3.3 NECESSARY MAINTENANCE
•
Shut-off valve: check condition, function and labelling
•
Check labelling
•
Check for corrosion
•
Check function
•
Pressure test with 1-times working pressure for 12 hours
•
Worn and defective components have to be changed immediately from authorized qualified company
•
If there is leakage or corrosion at the shut-off valve, it has to be changed immediately from authorized
qualified company
•
After the changing of components or tubes, pressure and leakage test have to be done again and be
protocolled
8.4 MEASURES FOLLOWING MAINTENANCE
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 malfunctions 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 (see
section 1.8 for contact details).
9.1 SAFETY NOTES FOR TROUBLESHOOTING
In any case of malfunction the shut-off valves of the connected gas containers have to be closed. Never ope-
rate devices with malfunction under pressure.
WHAT TO DO IN CASE OF MALFUNCTION:
1. Interrupt gas supply
2. Depressurize shut-off valve with handwheel
3. Only trained technical staff may eliminate malfunctions.
4. Restore the shut-off valve to its original state.
No. Description of fault
1 No flow
2 No shut-off and open function
even turning the handwheel
Cause
Handwheel closed
Handwheel is highly charged
due overturning the torque
16/36
Solution
Open handwheel
Change complete handwheel