EKOM DK50 2V/50, Installation, Operation And Maintenance Manual, Page: 21 / 84

DK50 2V/50
DK50 4VR/50
NP-DK50 2V50-4VR50-5_03-2013.doc - 20 - 03/2013
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18. REPAIR SERVICE
Guaranteed and post-guarantee repairs must be done by the manufacturer, its authorized representative, or
service personnel approved by the supplier.
The manufacturer reserves the right to make changes to the appliance without notice. Any changes made
will not affect the functional properties of the appliance.
19. SOLVING PROBLEMS
Caution! Before proceeding, depressurize the air tank to zero and disconnect the
appliance from the mains.
After the remedy of failure and reverse assembly of drier, it is necessary to perform the regeneration
of drier, best at continuous operation of compressor at pressure of 0.6-0.7 MPa for at least 1 hour
and then to check air drying.
Troubleshooting can be performed only by qualified personnel.
FAILURE POSSIBLE CAUSE REMEDY
No voltage in pressure switch Check voltage in socket
Check fuse – replace faulty one
Loosen terminal – tighten it
Check power cord – replace faulty one Compressor does not
start
Disconnected winding of motor, damaged
thermal protection
Faulty capacitor
Seizure of piston or another rotary part
Pressure switch does not switch on Replace motor or re-wind it
Replace capacitor
Replace damaged parts
Check the function of pressure switch
Compressor often
switches on Air leak in pneumatic distribution system
Leaking check valve
Greater volume of condensed liquid in
pressure vessel Check pneumatic distribution system – seal
loose joint
Clean valve, replace seals, replace valve
Drain condensed liquid
Prolonged running of
compressor Air leak in pneumatic distribution system
Worn piston ring
Contaminated input filter and prefilter
Dirty filter in the dryer
Defective solenoid valve Check pneumatic distribution system – seal
loose joint
Replace worn piston ring
Replace contaminated filters with the new ones
Change the outlet filter and inspect dessicant
Repair or change the valve
Compressor is noisy
(knocking, metal
noises) Damaged bearing of piston, piston rod,
motor bearing
Loose or cracked spring Replace damaged bearing
Replace damaged spring
Devaluated or very polluted dessicant Change the dessicant and filters
low operating pressure reduce the air offtake, check the source
efficiency,
check possible leaks in the distribution
inoperative solenoid valve repair or change the valve
clogged nozzle of the regenerating air clean or replace the nozzle, use correct size of
the nozzle (see Product maintenance)
inoperative cooler ventilator replace ventilator check supply of electric
energy
Dryer doesn´t dry
(condensed water in
the tank)
leak of white liquid through the solenoid
valve dismantle the chamber, replace drying
substance, bottom filter and sealing and
inspect tightness, apply soapy water onto O-
rings of the nuts
defective solenoid valve replace the valve
damaged damping substance in the
condensate vessel replace damping substance or the vessel
Drying unit is noisy or
sounds annoying
damaged pressure hose replace pressure hose