EKOM DK50 4x4VRT/M, User Manual

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TROUBLESHOOTING
NP-DK50-Nx4VRTM-AD-A-EN-4_03-2021 66 03/2021
often, even without
demand for air system system
– seal loose joints
Leaky check valves
Test check vales and clean, or replace
if damaged
Leak through solenoid valves once
regeneration is complete Clean the check valve - replace if
damaged
Leak at pressure sensor and safety
valve Test their function and clean, or replace
if damaged
Output of certain air
pumps is reduced,
extended run cycle
Air pump leaking
Check connections on the air pump for
leaks
– tighten leaking connections
Worn piston rings Replace worn piston
Gasket between cylinder head and
valve plate damaged
Replace gasket, tighten
Intake filter is plugged Replace old filter with a new filter
One of the air pumps
is noisy (knocking,
metal noises)
Damaged motor bearing Replace damaged bearing
Damaged piston bearing, piston rod Replace damaged piston
Failed (cracked) rubber mount spring
Replace damaged spring with new
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
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 dryer
operation, check the dryer’s working
pressure,
and replace defective
components.
Air leaking through
relief valve at dryer
inlet
Compressor running at high working
pressure
Check the compressor’s working
pressure setting
Dryer inlet solenoid valve not working
Check coil operation, replace if damaged
Inspect the condition of the valve - clean
the valve or replace if problems persist
High pressure in equipment resulting
from plugged filters
Check the internal filters and accessory
filter assemblies.
Clean or replace dirty filters.
Once a fault is cleared and after reassembling the dryer, the condensate must be drained from the