Problem solving guide
127
Dispensing/Dispensing systems
Caution when handling chemical agents.
For all chemical agents, the chemical agent manufacturer's safety instructions as given
on their safety data sheets must be observed.
Problem Cause and remedy
DOS Refill During a programme sequence a low level of liquid
chemical agent in a container has been identified.
Replace the empty container with a full one.
Programme could not be
started. Vent DOS
A programme cannot be started because ...
... there is air in the dispensing system.
... the dispensing system has been sucked completely dry.
Check the level in the supply container. Replace an
empty container with a full one, if necessary.
Vent the dispensing system.
Dispensing system DOS
venting
This is not a fault.
The dispensing system will now be automatically vented.
Wait until the venting process is finished.
Venting DOS cancelled.
Venting 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 siphon blocked.
Check the dispensing hose for kinks and leaks. Position
it so that it cannot become kinked.
Check the suction aperture of the siphon 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 siphon.
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 siphon for deposits.
Vent the dispensing system.
The dispensing hose is blocked.
Remove any kinks from the dispensing hose. Position it
so that it cannot become kinked.
Check the dispensing hose for leaks.
Vent the dispensing system.
Contact Miele Service if there are leaks in the dispensing
hose or a fault with the siphon.
Highly viscous (thick) chemical agents can affect the dispenser monitoring and lead to
inaccurate data. In this instance please contact Miele Service for advice.
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