EKOM DK50 3x4VR/M, User Manual

Page: 44 / 64

PRODUCT MAINTENANCE
NP-DK50 3x4VR_M-AD-A-EN-3_06-2022 44 06/2022
18.2. Check of product operation

Check air pump condition
– the air pumps
should be operating normally without
excessive vibration or noise. Troubleshoot
any problem or call in service personnel if
trouble is detected.

Visually inspect fan operation
– the fans
must be operating when the aggregates
are running. Troubleshoot any problem or
call in service personnel if trouble is
detected.

Check to ensure the power cord, the
connecting compressed air hoses are
undamaged.
Replace damaged
components or call in service personnel.

Check the ambient temperature
– the
ambient temperature must be below the
temperature limit (40°C). Cool the space if
the temperature is high.

Check for alarm conditions on the display
–
troubleshoot and remedy all alarms.

Check the operating condition of the
equipment (see Chapter 18.4).
18.3. Check the compressed air
connections for leaks and inspect
the equipment
Leak testing

Check the compressor's compressed air
lines for leaks during operation
– pressure
supplied by the compressor.

Use a leak analyser or soapy water to
check all joints and connections for leaks.
Tighten or reseal the connection where
leaks are found.
Inspecting the equipment

Check the condition of the compressor air
pump for normal operation and noise
levels.

Fan operation check
– the fans must be
running during the defined compressor
work cycles.

Check filters condition
– filters must be
undamaged and sufficiently clean.

Check condition of the pump itself, check if
there is no dirt inside the crankcase or
clearance in the crankshaft.

Check the functionality of the automatic
condensate drain.

Replace any defective parts as needed.

Check the solenoid valves in the valve
module
– the valves should cyclically cycle
between the chambers based on the
description of the operation.

Check the operating condition of the
equipment (see chap. 18.4).
18.4. Inspection of electrical
connections
Risk of electric shock.
Inspect the product’s electrical
connections when the mains
are disconnected.

Check mechanical function of the main
switch.

Check if the power cable and conductors
are not damaged.

Visually check if cables are connected to
the terminal box.

Check all screw connections of the green-
yellow PE grounding conductor.

Check the mechanical function of the main
switch Q10

Check the power cord, conductors
connected to the X1 terminal strip and the
main
switch to ensure they are
undamaged. Inspect to ensure the
connection terminals are properly
supported to relieve tension.

Check to ensure all threaded conductor
terminals are tight (on motor circuit
breakers Q1-3, main circuit breakers F1,
contactors Q11-13, etc.). Tighten all loose
terminals with a screwdriver.

Visually inspect the connection of
individual cables to the terminal strip X1
(spring clips) and the LOGO! control
system (screw terminals).

Inspect all screw terminals for the
protective green and yellow PE grounding
conductors in the switchboard, the motor
section, the cooling unit and the pressure