DK50 3x4VR/M
NP-DK50-3x4VRM_ED-EN-2_10-2018
- 26 -
10/2018
18.2. Functionalitycheck
Check air pumps 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
Check fan operation (visually) – the fans
must be running per the description of
their function. Troubleshoot any problem
or call in service personnel if trouble is
detected
Check to ensure the power cable and
connecting
pneumatic
hoses
are
undamaged.
Replace
damaged
components or call in service personnel.
Check the ambient temperature at the
display – the ambient temperature must
be below the temperature limit (40
o
C).
Cool the space if the temperature is
high.
Check for alarm conditions on the
display – troubleshoot and remedy all
alarms.
18.3. Leakcheckcompressedairconne
ctions and inspecttheequipment
Leak testing:
leak test the compressor’s compressed
air lines when running - when the
compressor is delivering pressure (not
during regeneration blowdown).
Use a leak analyser or soapy water to
check all joints and connections for leaks.
Tighten or reseal the connectionwhere
leaks are found
.
Equipment inspection (Fig. 1):
Check the condition of the compressor air
pump for normal operation and noise
levels.
Check the operation of fans.
Check the condition of filters.
Check the condition of the air pump itself:
- contamination in the crankcase and
play in the crankshaft
Replace any parts as needed.
18.4. Inspection of
electricalconnections
Inspect
the
product’s
electrical
connections
when
the
mains
are
disconnected!
Inspection
Check the mechanical operation of 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, 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
vessel. Tighten any loose terminals
Inspect connector X5 (dryer and cooler)
and the pressure sensor (B1) (on the
pressure vessel)
