ARI Armaturen Air vent PN 40 EN - Manual (Page 9)

Rev. 0040807004 2714 Page 2-9
Operating and installation instructions
Automatic air vent
8.0 Troubleshooting
In the event of malfunction or faulty operating performance check that the installation and
adjustment work has been carried out and completed in accordance with these Operating
Instructions.
If malfunctions cannot be eliminate with the help of the following table
“9.0 troubleshooting table”, the supplier or manufacturer should be consulted.
9.0 Troubleshooting table
-
ATTENTION !
It is essential that the safety regulations are observed when identifying faults.
ATTENTION !
- refer to item 10.0 and 11.0 prior to dismantling and repair work!
- refer to item 6.0 before restarting the plant !
Fault Possible cause Corrective measures
No flow Installed in wrong flow direction Fit valve in direction of flow arrow.
Flange covers not removed Remove flange covers
Ball float (Pos. 24.16) defective Check lifting force; refer to item 7.1
Little flow Wrong installation position Note installation position; refer to item
5.5. Correct installation position
Piping system clogged Check piping system
Wrong controller size choosen Correct selection acc. to flow diagram
No closure, or internal
leakage Controller clogged Clean controller; refer to item 7.1
Controller worn out Change controller; refer to item 7.1
Controller incorrectly screwed into body Check seal face between body and con-
troller, tighten controller correctly; refer
to item 7.3
Controller operated above safe operating
pressure Observe operating limits as per data
sheet, i.e. possibly select different con-
troller
External leakage Hood (Pos. 16) not properly tightened
cheese-head screw (Pos. 27) Tighten; refer to item 7.3
Flat gasket (Pos. 17) defective. Change flat gasket;
refer to item 7.1
Connector (Pos. 45) for venting valve not
properly tightened. Tighten; refer to item 7.3