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Chemical exposure
High pump speed
High conveying temperature
Short opera-
High operating pressure
tional lifetime
of the tubes
Pump cavitation
Abnormal elevation of tempera-
ture
Unsuitable lubricant
Insufficient quantity of lubricant
High inlet pressure (>0,5 bar)
Tube pulled
Tube filled with deposits
into the
Holder (press flange) insuffi-
pump hou-
ciently tightened
sing
Insufficient lubricant
Insufficient motor performance
Insufficient output from frequen-
cy converter
The pump
does not
Blockage in the pump
start up
Blockage in the pump
Check the compatibility of the tube with
the liquid being conveyed, the cleaning
fluid and the lubricant
Reduce pump speed
Reduce product temperature
Reduce operating pressure
Check the suction conditions
Check number of shims
Use Boyser lubricant
Reapply lubricant
Reduce inlet pressure
Clean or replace the tube
Re-tighten holder (press flange)
Reapply lubricant
Check motor and replace if necessary
The frequency converter must match the
motor
Check voltage. Start occurs at minimum
10 Hz
Check if the suction or discharge side is
blocked. Rectify blockage
21
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