Condition
Fault
Remedy
LED L2 lights up and no drain alarm
on the display
Slow draining or no draining
•
Condensate is only being
discharged when the test button
is pressed
•
No condensate is being
discharged when the test button
is pressed
Note:
In alarm situations, the drain valves make an automatic series of
forced openings (2 seconds ON; 2 seconds OFF)
The feed line has insufficient slope
Lay the feed line with an
adequate slope
The outlet line is partially blocked
Check the outlet line
Excessive amount of condensate
Check if the venting line is
properly installed
Check if the maximum drain
capacity of 15 litres/hour is not
exceeded. Make sure all free
water is removed from the
compressed air before it enters
the dryer.
The air pressure has dropped below
the minimum pressure
Ensure there is the minimum
pressure
The drain filter is blocked by dirt
Open the manual drain valve to
clean the drain filter
The feed and/or outlet line is shut off
or blocked
Check the feed line and the outlet
line
Wear
Order the wear kit and substitute
all the parts included
The control Printed Circuit Board
(PCB) of the drain is defective
Replace the complete drain
Both LED L2 on drain and the drain
alarm on the display light up
Slow draining or no draining
•
All above remedies were
checked and did not lead to
solution of the problem
Note:
Drain alarm on display lights up after a series of 30 forced
openings (2 seconds ON; 2 seconds OFF). The drain will now start a
second series of forced openings with a different regime (3 seconds ON;
60 seconds OFF).
Irreversible drain fault
Reset the drain by holding the
test button pressed for at least 5
seconds. Should the problem
persist, replace the drain.
Instruction book
56
2920 7103 90
Summary of Contents for QED-250
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