49
20901544_E12C+16C_NT Vsel_V1.2_260922
Troubleshooting
Error
Error
`
Possible cause
3
Remedy
Personnel
`
Vacuum line too long
or cross‑section too
small.
3
Use a shorter vac‑
uum line with a
larger cross‑sec
‑
tion.
Resp. spe-
cialist
`
Condensate inside
the vacuum pump.
3
Allow vacuum
pump to run for a
few minutes with
the suction nozzle
open.
Operator
No or very little
suction power
`
Deposits inside the
vacuum pump.
3
Clean and check
pump heads.
Specialist
`
Diaphragms or valves
defective.
3
Replace dia‑
phragms and
valves.
Specialist
`
High level of vapor
generated in the pro
‑
cess.
3
Check process
parameter.
Specialist
`
Gas ballast open
3
Close the gas bal
‑
last
Operator
`
Gas ballast cap
porous or no longer
present.
3
Check gas ballast
cap.
3
Replace defective
components.
Operator
No display
`
Pump switched off.
`
Power plug not cor
‑
rectly plugged in or
pulled out.
`
VACUU·BUS plug‑in
connection or cables
defective or not con‑
nected.
`
Controller switched
off or defective.
3
Switch pump on
using rocker switch.
3
Switch on control‑
ler.
3
Check power sup
‑
ply and cable.
3
Check
VACUU·BUS plug‑
in connection and
cables to the con‑
troller.
3
Replace defective
components.
Operator
Loud operating
noises
`
No hose installed at
outlet.
3
Check hose and
install it correctly.
Operator
Error – Cause –
Remedy
