EKOM DK50 2x4VR/110 S, User Manual

Page: 56 / 392

TROUBLESHOOTING
NP-DK50 4VR 50, DK50 2x4VR 110-MD-2_08-2021 56 08/2021
TROUBLESHOOTING
Risk of electric shock.
Before interfering with the equipment, first disconnect it from the mains (remove
the power socket).
Troubleshooting may only be performed by a qualified service technician.
Damage to the safety valve could cause pressure to rise to hazardous levels.
Never adjust a safety valve.
Malfunction Possible cause Solution
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
Replace motor or re-wind it
Faulty capacitor Replace capacitor
Seizure of piston or another rotary part Replace damaged parts
Pressure switch does not switch on
Check the function of pressure
switch
Cabinet switch does
not switch off the
compressor There is a compressor in the cabinet that
previously worked separately (there is a
jumper in the compressor terminal strip)
Remove the jumper from the
terminal strip (see. chap. 18.11)
Compressor often
switches on
Air leak in pneumatic distribution
system Check pneumatic distribution
system
– seal loose joint
Leaking non-return valve
Clean valve, replace seals, replace
valve
Greater volume of condensed liquid in
pressure vessel
Drain condensed liquid
Prolonged running
of compressor
Air leak in pneumatic distribution
system Check pneumatic distribution
system
– seal loose joint
Worn piston ring Replace worn piston ring
Contaminated inlet filter
Replace contaminated filters with
the new ones
Defective solenoid valve Repair or change the valve
Compressor is
noisy (knocking,
metal noises)
Damaged bearing of piston, piston rod,
motor bearing
Replace damaged bearing
Loose or cracked spring Replace damaged spring
Dryer doesn't dry
(condensed water
in the air) *
Cooling fan not working Replace the fan
Damaged dryer Check the power source
Non-functioning automatic condensate
drain
Replace the dryer Clean / replace
)* Clean inside surfaces of the air tank thoroughly and remove all condensed liquid after dryer failure.