Stenner Pumps CLASSIC Serie Manual De Instalación Y Mantenimiento página 24

TROUBLESHOOTING – FEED RATE CONTROL
PROBLEM
Adjustment ring will not turn
Adjustment ring turns,
output doesn't change
Pump head does not rotate
Pump head rotates continuously Variable cam
Erratic indexing
24
POSSIBLE CAUSE
Seized variable cam
Seized adjustment ring
Variable cam disengaged from ring
Broken variable cam
Worn index plate
Motor problem
Pump head roller assembly stripped Replace roller assembly
Index pin holder loose
Index pin broken
Index plate worn
Variable cam worn
Lifter worn
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SOLUTION
Apply Aquashield to variable cam &
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cam slot
Clean then lubricate ring with AquaShield
Re-insert 90˚ end into ring
Replace variable cam
Turn over or replace index plate
Refer to Motor section
Tighten holder into spider assembly
Replace index pin and lifter assembly
Replace or re-insert variable cam
Turn over or replace index plate
Replace variable cam
Replace index pin & lifter assembly
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