Hydrotech Classic Series Stenner Basic Service Manual - Manual (Page 33)

32 Maintenance Basics – FRC
Worn lifter (wear part)
Continuous repetition of the lifter riding on the cam can cause
a flat spot on the rounded point of the lifter. The flat spot
contributes to the premature wear of the cam and index plate.
A seized or corroded index pin and lifter assembly
Usually caused by water or chemical intrusion.
NOTE Additional information
The lower the feed rate control setting, the more
wear on the cam, lifter, and plate. To reduce FRC
parts wear, select the pump model that will
operate at the desired maximum gpd.
BEST PRACTICE
Factory recommended
Mount pump in vertical
position with spill recovery
tube to allow chemicals to
drain away from
internal parts.