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Continuation of "KFG/KFGS pump malfunctions" table
Fault
Category Possible cause Rectification
Pump does not
deliver any lubricant,
although agitator is
rotating.
Malfunction
Suction problems due to 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.
Pressure regulating
valve on pump
opens and lubricant
discharges.
Malfunction
System pressure is over 200/300 bar, e.g.,
due to feeder blockage or blocked lubrication
point.
Valve is damaged or contaminated, so it
does not close properly.
• Check system and repair/rework the system so
the maximum system pressure at 20 °C is 200 bar.
• Replace pressure regulating valve .
14. Operational and pump faults
KFGS
KFG
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