15
Fault-Cause-Remedy
Fault-Cause-Remedy
Fault
Cause
Remedy
Breakdown in operating pressure
Breakdown of gas supply
Establish emergency supply.
Reduce gas consumption.
Cylinder empty ? If yes, replace.
Cylinder valve closed ? If yes, open.
Have repaired by experts.
Operating pressure too low
(P3 < 4 bar)
Inadequate gas supply
Establish emergency supply.
Reduce gas consumption.
Pressure OK after these measures ?
If not, have repaired by experts.
Operating pressure too high
(P3 > 6 bar)
Increased gas consumption
Have repaired by experts.
Pressure gauge defective
Misinformation
Have repaired by experts.
No empty message
Misinformation
Observe pressure gauge.
Replace cylinders if P1 / P2 is approx.
10 bar.
Have repaired by experts.
Blow-off valve blows off
Increased gas consumption
Incorrect change-over
Observe pressure gauge.
Check VIE, if connected.
Have repaired by experts.
Safety valve blows off
Increased gas consumption
Incorrect change-over
Observe pressure gauge.
Have repaired by experts.
Change-over effected too early
Increased residual pressure in gas
cylinder
Empty message fails
Reduce gas consumption.
Observe pressure gauge.
Switch to fuller manifold by brief shut off.
Replace cylinder upon receipt of empty
message.
Change-over OK now ? If not, have
repaired by experts.
Both manifolds feed in simultaneously
Reserve supply being used
Observe pressure gauge.
Shut off side with higher pressure, for
use the side with lower pressure.
After empty message: open side with
higher pressure and replace empty
cylinders.
Have repaired by experts.