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S10P Series www.stenner.com
TROUBLESHOOTING – PUMP HEAD
PROBLEM
POSSIBLE CAUSE
SOLUTION
Roller assembly will not
Stripped or cracked roller assembly hub
Replace roller assembly
expand or collapse with
tube housing cover
Components cracking
Chemical attack
Identify and correct cause; clean components
of chemical & replace tube according
to instructions
Chemical intrusion from tube failure
Identify and correct cause; clean components
of chemical & replace tube according
to instructions
Pump head leaking
Pump tube rupture
Replace pump tube according to instructions
No pump output,
Roller assembly not fully expanded
Expand roller assembly using pump head
pump head rotates
cover as a tool, according to instructions
Depleted solution tank or
Replenish solution & position suction line
weighted strainer is above solution
3" above bottom of tank
Leak in the suction line or at connections
Correct or replace suction line or connections
Ferrules installed incorrectly, missing
Replace ferrules, beveled end faces pump
or damaged
Injection point is clogged
Inspect and clean injection point
Clogged suction and/or discharge line
Clean and/or replace as needed
and/or injection check valve
Life of pump tube exhausted
Replace tube according to instructions,
schedule tube replacement based
on application
Suction line is flush with the nose of
Pull suction line approximately 1" from
the weighted strainer
bottom of strainer, cut bottom of suction line
at an angle
Sleeve and/or plastic gripper inside 3/8"
Replace if damaged or missing; Reorient if
connecting nut is missing, damaged,or
incorrectly assembled; gripper beveled end
incorrectly assembled
faces nut; sleeve wide end faces gripper
Low pump output,
Life of pump tube exhausted
Replace tube according to instructions,
pump head rotates
schedule tube replacement based on application
Rollers worn or broken
Replace roller assembly
Injection point is restricted
Inspect and clean injection point regularly
Incorrect tube size
Refer to flow rate output chart and replace
tube with correct size
High system back pressure
Verify system pressure against tube psi,
replace tube if needed
No pump output,
Stripped or cracked roller assembly hub
Replace roller assembly
pump head doesn’t rotate
Motor problem
Refer to motor troubleshooting section
Pump output high
Incorrect tube size or setting
Replace tube with correct size or
adjust settings
Roller assembly broken
Replace roller assembly
