TROUBLESHOOTING
06/2022
57
NP-DK50 3x4VR_M-AD-A-EN-3_06-2022
regeneration is complete
damaged
Leak at pressure sensor and safety
valve
Test their function and clean, or
replace if damaged
Low pressure in
the air tank
(compressor
running constantly)
High air consumption of supplied
equipment
Decrease air consumption
Use compressor with higher
capacity
Leakage in pneumatic system
Check pneumatic system
– seal
loose connections
Low capacity of the pump
Clean / replace the pump
Pump failure
Clean / replace the pump
Dryer failure
Replace dryer
Prolonged
operation of the
compressor
Air leakage in pneumatic system
Check pneumatic system
– seal
loose connection
Worn piston ring
Replace worn piston ring
Dirty inlet filter
Replace dirty filter with new filter
Incorrect function of solenoid valve
Repair or replace fan or coil
Compressor is
noisy (knocking,
metal noises)
Damaged piston bearing, piston
rods, motor bearing
Replace damaged bearing
Loose (cracked) dampening
element (spring)
Replace damaged spring
High ambient
temperature
causes
compressors to
switch off in vertical
stacks
(overheating)
Lack of ventilation in compressor
room
Secure suitable ambient conditions
Cooling fans for aggregates, cooler
and enclosure do not work
Defective fans - replace
Defective temperature switch -
replace
Degraded
drying
performance
–
high-pressure dew
point
(condensed water
in the air)
Low operating pressure
Reduce the demand for air, check
the output from the compressed air
source, fix any leaks in the
distribution system
Regeneration solenoid valve not
working
Check coil operation, replace if
damaged
Inspect the condition of the valve
–
clean the valve or replace if
problems persist
Air regeneration nozzle plugged
Clean or replace the nozzle
(see product maintenance)
Cooling fan not working
Check the power source to the fan
Replace damaged fan
Dirty cooler
Inspect the cooler and clean as
necessary
Silencer plugged at outlet from
regeneration valve
Inspect the silencers. Clean or
replace the silencer if flow
resistance is too high or if heavily
soiled.
Dryer emitting high
levels of noise
Damaged fan
Replace damaged fan
Damaged silencer
Replace the silencer
Air leaking through relief valve at
dryer inlet
Check the dryer connection to the
mains and dryer connections, check
the dryer operation, check the
Summary of Contents for DK50 3x4VR/M
Page 1: ...DK50 3x4VR M User manual ...
Page 2: ......
Page 13: ...PRODUCT DESCRIPTION 06 2022 13 NP DK50 3x4VR_M AD A EN 3_06 2022 Fig 2 Adsorption dryer ...
Page 14: ...PRODUCT DESCRIPTION NP DK50 3x4VR_M AD A EN 3_06 2022 14 06 2022 Fig 3 Switchboard ...
Page 30: ...INSTALLATION NP DK50 3x4VR_M AD A EN 3_06 2022 30 06 2022 14 PNEUMATIC DIAGRAM DK50 3x4VR M ...
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