EKOM DK50 4x2VT/M, User Manual

Page: 47 / 60

PRODUCT MAINTENANCE
04/2022 47 NP-DK50-Nx2VTM-AD-EN-6_04-2022
18.10. Check of solenoid valve operation
Check their operation using the
“Magnetic indicator” fixture as follows:

Attach the fixture to the valve coil and if the motors
are active at the valve coil, the indicator must rotate
and if they are out of inactive, the indicator must
not rotate.
Fig. 24: Check of solenoid valve operation
18.11. Check the function of the
pressure switch
Every pressure switch has a defined
hysteresis of ~2 bar. Functionality is checked
visually. If the air pumps reach the upper limit,
the pressure switch must disconnect the
motors from the power. The process is
reversed and the motors started at the low
pressure limit.
18.12. Cleaning and disinfection of the
exterior surfaces of the product
Clean and disinfect the exterior surfaces with
neutral cleaning products.
Use of aggressive detergents
and disinfectants containing
alcohol and chlorides can lead
to
surface damage and
discolouration.
AD dryer maintenance
18.13. Venting pressure from the dryer
The equipment is designed to permit the safe
venting of pressure within 10 seconds after
the compressor is shut off.
If pressure is not automatically vented from
the dryer, then the pressure may be vented
manually.
Venting compressed air poses
an injury hazard
Wearing hearing protection is
recommended given the noise
generated
by the venting
process.
Shut off the compressed air
source before venting pressure
from the equipment.
Venting pressure sing the display screen
Press ESC+▼ in the display screen to vent
pressure from the equipment.

First, shut off the compressed air
source.

Then press and hold ESC+▼, which
will open all the solenoid valves (inlet
and regeneration) for 10 seconds and
then vent the pressure from the
equipment and connected pneumatic
circuits and elements that are not
separated from the equipment by the
check valve.
Manual venting of pressure

Turn off the compressor.

Open the vent plugs on the outlet
module on the equipment (Fig. 25).