S Series FW 3.02.02
www.stenner.com
90
TROUBLESHOOTING – PUMP HEAD
PROBLEM
POSSIBLE CAUSE
SOLUTION
Components cracking
Chemical attack
Check chemical compatibility
Pump head leaking
Pump tube rupture
Replace pump tube and connections
No pump output,
Depleted solution tank
Replenish solution
pump head rotates
Pump suction line weight is above solution
Maintain suction line 2-3" above
bottom of tank
Leak in the suction line
Inspect or replace suction line
Ferrules installed incorrectly, missing
Replace ferrules
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 check valve
Life of roller assembly exhausted
Replace roller assembly
Life of pump tube exhausted, S30 only
Replace pump tube, ferrules;
center tube
Life of pump tube exhausted, S40 only
Replace pump tube, refer graphic below
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
Low pump output,
Life of roller assembly exhausted
Replace roller assembly
pump head rotates
Life of pump tube exhausted, S30 only
Replace pump tube, ferrules; center tube
Life of pump tube exhausted, S40 only
Replace pump tube, refer graphic below.
Rollers worn or broken
Replace roller assembly
Injection point is restricted
Inspect and clean injection point
Incorrect tube size
Replace tube with correct size
High system back pressure
Verify system pressure against tube psi,
replace tube if needed
No pump output,
Stripped roller assembly
Replace roller assembly
pump head doesn’t rotate
Motor problem
Refer to motor section
Pump output high
Incorrect tube size or setting
Replace tube with correct size or
adjust settings
Roller assembly broken
Replace roller assembly
S40 ONLY
IMPORTANT: DO NOT TWIST THE TUBE
during installation. To
ensure it doesn't twist, keep the tube positioned so the printed
description stays aligned along the length of the tube.
