EKOM DK 50 4X2VT/M, User Manual

Page: 34 / 60

OPERATION
NP-DK50-Nx2VTM-ADM-EN-1_06-2022 34 06/2022
OPERATION
ONLY TRAINED PERSONNEL
MAY
OPERATE THE
EQUIPMENT!
Risk of electric shock.
In case of emergency,
disconnect the compressor
from the mains (pull out the
mains plug).
Burn or fire hazard.
When the compressor is
running, the connecting hose
between the compressor and
dryer and parts of the dryer and
aggregate may be hot enough to
burn people or other material.
Warning - compressor is
controlled automatically.
Automatic start. The
compressor automatically
switches on when the pressure
in the air tank drops to the
pressure switch’s lower limit
level.
The compressor
automatically switches off once
the pressure in the tank reaches
the shut-off pressure.
Potential for damage to
pneumatic components.
The working pressure settings
for the pressure switch set by
the manufacturer cannot be
changed.
Compressor
operation at a working pressure
below the switching pressure
indicates high air usage (see the
Troubleshooting chapter).
Risk of damage to the dryer.
The dryer may be damaged if
operated
at ambient
temperatures that are higher
than the maximum working
temperature
(ambient
temperature >30°C or inlet air
temperature of >100°C)
Required drying performance
can only be achieved when
following the defined operating
conditions.
Drying performance will decline
and the achieved dew point will
drop if the dryer is operated at
any
pressure below the
minimum working pressure.
16. SWITCHING THE COMPRESSOR
After the pressure switch (6) is activated and
circuit breakers FA13 (26) and FA14 (27) are
turned to position I, the compressor air pumps
sequentially come online (the air pumps in the
second column or shelf react with a 2 s delay).
Circuit breaker FA13 (26) functions as the
main switch.
The air pumps switch on (at ≤6 bar) and off (at
≥8 bar) automatically and are controlled by the
LOGO! (28) controller and the pressure switch
(6) based on compressed air usage.
If the motor surface temperature exceeds
40oC, the temperature switches automatically
turn on the compressor cooling fans, switching
them off once the temperature decreases to
approximately 32
o
C.
16.1. Controller LOGO!
This controller controls the compressors
monitors and signals alarms (as described
below) and displays the number of operating
hours. It is composed of a base module and
an expansion module. The base module
includes a display and the cursor (control)
buttons ▲, ▼, ►, ◄, OK and ESC. The
expansion module has LED indicators for
RUN and STOP.