Hydrotech Classic Series Stenner Basic Service Manual - Manual (Page 18)

17
Excessive back pressure at the point of injection
Blockage or restriction of the (check valve) duckbill due to
insoluble sediments or particulates from the bottom of
the tank.
Corrective Action
1. Replace suction/discharge tubing and clean sediment
from tank bottom.
2. Position suction weight 3" from tank bottom.
3. Use strainer.
4. Replace duckbill.
Split along tube side
Rubbing along roller assembly and pump head housing edge.
Corrective Action
1. Center tube at time of new tube installation.
BEST PRACTICE
Factory recommended
Replace duckbill with every tube change.
NOTE Additional information
Tube will not center if wrist
twists during installation,
(shortening the tube) or if
rollers are worn.
Continued...