EKOM DK50 3x4VR/M, User Manual

Page: 52 / 64

PRODUCT MAINTENANCE
NP-DK50 3x4VR_M-AD-A-EN-3_06-2022 52 06/2022
18.18. Inspecting the cooled and fan
The equipment, in particular the compressor
fan, cooler fan, and the cooler, must be kept
clean to ensure efficient drying. Remove dust
from the surface of the cooling fins and fans
by vacuuming or blowing down with
compressed air.
18.19. Replacement of solenoid valves
Risk of electric shock.
Shut off the compressed air
source, turn off the equipment
and disconnect it from the
mains before working on the
equipment.
Working with pressurised
pneumatic components poses a
risk of injury.
Disconnect the equipment from
the mains and vent the pressure
in the equipment and the
pneumatic
system to zero
before working on the
equipment.
In normal operation, the solenoid valves in the
bottom of the dryer must be replaced at the
defined interval.

Turn off the compressor.

Check the pressure in the dryer.

If the dryer chambers are under pressure,
proceed in accordance with Chapter 18.13.

Unscrew the 1 screw from the valve
connector (1).

Disconnect the valve connector (2).

Unscrew the 4 screws (3).

Remove the solenoid valve (4).

Remove the valve seal (4-1) from the body.

Physically clean the valve seat surface to
remove any impurities.

Physically clean the 16 screws to remove
the thread locking adhesive.

Install the solenoid valve (Fig. 28).

The new valve seal (4-1).

Install the new solenoid valve using the 4
screws (3) and use a thread locking
adhesive on the threads of the screws
(such as Loctite 243).

Reattach the solenoid valve connector and
attach with a screw (1).

Switch on the compressor.

Check for any dryer leaks.