EKOM DK50 4VR/50, Installation, Operation And Maintenance Manual

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DK50 4VR/50
NP-DK50 4VR50-11_04-2018 - 26 - 04/2018
Troubleshooting can be performed only by qualified personnel.
FAILURE POSSIBLE CAUSE REMEDY
Compressor does not start No voltage in pressure switch Check voltage in socket
Check fuse – replace faulty one
Loosen terminal – tighten it
Check power cord – replace faulty one
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
Dryer doesn´t dry
(condensed water in the
tank) Membrane dryer
inoperative cooler ventilator replace ventilator
check supply of electric energy
Damaged dryer Replace dryer
Dirty automatic condensate drain on filters clean / replace
Dirty filter and micro-filter elements Replace old elements with new elements
NDM Dryer
Decreased dew point
performance 1. Insufficient pressure at inlet
2. Electrical failure
3. Damp or contaminated dryer media
4. Excessively high air consumption
5. Excessive intlet air temperature
6. Insufficient clean air
7. Exhaust silencer blocked 1. Inlet pressure must be at least 4 Bar. If this is not the
case, adjust and set the inlet pressure.
2. Ensure the equipment is switched on and the dryer's
front panel is lit, check for proper dryer cycle.
3. Remove the source of the contamination. Replace
the cartridges – do not reuse.
4. Ensure dryer performance matches required air
demand.
5. Check technical specifications.
6. Cancel incorrect settings and contact a service
technician – adjust settings.
7. Contact a service technician.
Dryer cycle failure 8. Controller malfunction
9. Lamp is not lit
10. Insufficient inlet pressure
11. Venting malfunction during regeneration
12. Output flow halted
8. Check to ensure controller has power, check the
display to ensure the solenoid valves are powered in
regular cyclical operation.
9. Check unit power and fuses
10. Inlet pressure must be at least 4 Bar. If this is not
the case, adjust and set the inlet pressure.
11. If the solenoid valve has power and is
malfunctioning – replace the valve. The valve is
working properly if a click can be heard at the outlet
when venting
12. Check the air flow at the inlet.
Constant venting 13. Dryer run failure
14. Irregular air flow from exhaust
13. Switch off and restart the dryer. Check to see if the
dryer is under pressure before switching on – to ensure
the dryer can be started before starting operation.
14. Defective or damaged valve, maintenance required