Maintenance &
troubleshooting
0973008-52-03
DDE 2000 // DDE 3000
33
7.8 Eliminating faults
DANGER
Electric shock from high voltages
Any work on the electrical grid and on voltage-conducting parts may only
be performed by an electrical specialist.
CAUTION
Damage from dust leaks and dust trails at air outlet openings.
Turn the product off at the main switch immediately.
CAUTION
Danger from the fan producing smoke and loud running noises
Turn the product off at the main switch immediately.
Fault
Possible cause
Possible solution
Suction too weak
Filter soiled.
Clean filter.
Throttle is shut too firmly. Open throttle accordingly.
Clog due to deposited
residue in the suction pipe
system
Check the suction pipe system
for deposited residue and
clogs, and clean it if
necessary.
Cleaning point too low,
meaning no cleaning of
the filter.
Contact LISSMAC customer
services to adjust the cleaning
point.
Suction performance of
the product decreases
and does not improve
after the cleaning.
Filter worn.
Perform filter change.
Collection drawer full.
Replace disposal carton;
empty collection drawer if
necessary.
The resistances in the
suction system are too
high.
Check suction pipe; if
necessary, use pipeline with
larger diameter or reduce
length of pipeline.
Motor protection trips.
Motor was switched on/off
too often within a short
period of time.
Please consult the "Activation
operations for motors" table.
