4233 5000 13
77
9
Problem solving
Air inlet and outlet valve
Use only authorised genuine parts. Any damage or malfunction caused by the use of
unauthorised parts is not covered by Warranty or Product Liability.
Safety precautions during maintenance or repair
All valves, couplings and pipes used/installed after the unit must be free from oil and grease
(hydrocarbon contamination < 550 mg/m
2
) and dust (particles size < 50 micrometer).
Before carrying out any maintenance or repair work on the purifier unit: make sure that the
tower or unit is not active or under pressure and switch off the voltage.
Open the isolating switch to prevent an accidental start.
Close air inlet and outlet valve (2) of the unit.
The air inlet and outlet valve (2) can be locked during maintenance or repair work
as follows:
•
Close the valve.
•
Using a wrench, remove the screw fixing the handle.
•
Lift the handle and turn it until the slot of the handle fits over the blocking edge on
the valve body.
•
Fit the screw.
Faults and remedies, PD dryer unit
Condition
Fault
Remedy
The dryer produces a lot of
noise
Check the silencers and their
fixation
Replace the silencers if necessary or correct
its fixation
Insufficient air leaves the dryer Too much purge air escapes Check the condition of the solenoid valve and
replace it if necessary
Connection tubing
Tubing obstructed, ruptured
or leaking
Check/clean piping and connections, replace
worn parts
Instruction book missing or
unreadable
Replace (contact your supplier)
Data label
Not present or unreadable
Clean or replace (contact your supplier)
Summary of Contents for dMED 025
Page 2: ......
