3-93
DX380LC-7
Malfunctions on Pump Units
Fault
Category
Possible Cause
Rectification
Pump Agitator in
grease reservoir does
not rotate during the
activated pump cycle
(CONTACT mode).
Malfunctions
•
Mechanical
damage,e.g., motor
defective
•
Under voltage
•
Electrical connection
interrupted
•
Replace pump
–
Loosen main line at outlet of
pressure regulating valve.
–
Loosen electrical connection.
–
Loosen three fastening screws.
–
Remove defective pump.
–
Mount new pump and connect
lubrication line and electrical
cable.
•
Perform commissioning and functional
inspection.
•
Be sure the interval and contact times
are correct.
•
Check or replace fuse.
•
Check electrical connections
•
Check cable set for damage.
Pump does not
function when the
key is pressed,
although all electrical
connections are OK.
Malfunctions
•
Electrical control
has failed.
•
Pump drive/motor
is defective.
•
Lubricant level in
reservoir is below
minimum.
•
Agitator does not
rotate.
•
Check fuse
•
Replace pump
•
Fill lubricant reservoir to "max".
•
Replace pump element.
Note: Metering is indicated by grooves.
Pump does not
deliver any lubricant,
although agitator is
rotating.
Malfunctions
•
Suction problems
because of air
pockets in grease.
•
Pump element does
not build up
pressure, pump
element is worn out.
(This is indicated
when the outlet can
be closed with a
finger once the main
line is removed.)
•
Lubricant too stiff
•
Dismantle pump element and operate
pump using key until grease
discharges from outlet on housing.
•
Replace pump element.
Note: Metering is indicated by
grooves.
•
If necessary, adjust lubricant to work
properly at lowest working
temperature.
