Problem solving guide
123
Dispensing/dispensing systems
Caution when handling process chemicals.
For all process chemicals, the process chemical manufacturer's safety instructions as
given on their safety data sheets must be observed.
Problem
Possible cause and solution
Refill DOS
During a program sequence a low level of liquid process
chemical in a container has been identified.
Replace the empty container with a full one.
Prog. start not possible.
Prime dispenser pump DOS
A program cannot be started because ...
... there is air in the dispensing system.
... the dispensing system has been sucked completely dry.
Check the fill level in the supply container. Replace the
empty container with a full one if needed.
Vent the dispensing system.
Dispensing system DOS
priming
This is not a fault.
The dispensing system will now be automatically vented.
Wait until the venting process is finished.
Priming DOS canceled.
Priming must be repeated
Venting of the dispensing system was cancelled because
an insufficient flow rate was identified. A dispensing hose
may be kinked or the suction lance blocked.
Check the dispensing hose for kinks and leaks. Position
it so that it cannot become kinked.
Check the suction aperture of the suction lance for
blockages and remove these as necessary.
Start the venting process again.
Contact Miele Service if there are leaks in the dispensing
hose or a fault with the suction lance.
Check container/lance DOS
Little or no flow has been identified.
Check the level in the supply container. Replace an
empty container with a full one, if necessary.
Check the suction aperture of the suction lance for
deposits.
Prime the dispensing system.
The dispensing hose is kinked.
Remove any kinks from the dispensing hose. Position it
so that it cannot become kinked.
Check the dispensing hose for leaks.
Prime the dispensing system.
Contact Miele Service if there are leaks in the dispensing
hose or a fault with the suction lance.
Highly viscous (thick) process chemicals can affect the dispenser monitoring and lead to
inaccurate data. In this instance, please contact Miele Service for advice.