DKL L2-S300, Operating Instructions Manual, Page: 240 / 327

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11 Tips for operators and service technicians
Any repairs above and beyond routine maintenance must only be carried out by suitably quali-
fied personnel or by one of our service technicians
WARNING
Infection due to contaminated unit
i
Clean and disinfect the suction before working on the unit
i
Wear protective equipment when working (e g impermeable gloves, protective goggles
and mouth and nose protection)
Prior to working on the device or in case of danger, disconnect it from the mains (e g pull the
mains plug)
Fault Probable cause Solution
Spittoon valve not working No power supply
i
Check power supply and
restore *
Faulty connections
i
Check the plug connections *
Relay not switching
i
Check the switching function of
the relay *
No compressed air present
i
Check the compressed air sup-
ply of the spittoon valve *
Sensor defective
i
Check the function of the sensor
with the aid of the button
i
Check the function by manually
moving the float sensor
Suction unit does not start
up or runs continuously Float sensor does not move in its
housing
i
Clean the housing and float
sensor *
i
Insert the float sensor correctly
*
Fluid does not drain off
Drain blocked
i
Clean the drain line *
i
Check whether the filter is
blocked, clean if necessary
* Only by customer services service technicians
Troubleshooting
EN