Stenner Pumps S FIXED SERIE Manual De Instalación Y Mantenimiento página 28

TROUBLESHOOTING – PUMP HEAD
PROBLEM
Components are cracking
Pump head leaking
No pump output,
pump head rotates
Low pump output,
pump head rotates
No pump output,
pump head doesn't rotate
Pump output is high
28
S Fixed & Variable Series
POSSIBLE CAUSE
Chemical attack
Pump tube rupture
Depleted solution tank
Pump suction line weight is
above solution
Leak in the suction line
Ferrules installed incorrectly,
missing or damaged
Injection point is clogged
Clogged suction and/or discharge
line and/or check valve
Life of roller assembly exhausted
Life of pump tube exhausted
Suction line is flush with the
nose of the weighted strainer
Life of roller assembly exhausted
Life of pump tube exhausted
Rollers worn or broken
Injection point is restricted
Incorrect tube size
High system back pressure
Stripped roller assembly
Motor problem
Incorrect tube size or setting
Roller assembly broken
S4F & S4V MODELS 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.
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SOLUTION
Check chemical compatibility
Replace tube according to instructions
Replenish solution
Maintain suction line 2-3" above bottom
of tank
Inspect or replace suction line
Replace ferrules
Inspect and clean injection point
Clean and/or replace as needed
Replace roller assembly
Replace tube according to instructions
Pull suction line approximately 1" from
bottom of strainer, cut bottom of suction line
at an angle
Replace roller assembly
Replace tube according to instructions
Replace roller assembly
Inspect and clean injection point
Install correct tube size according to instructions
Verify system pressure against tube psi,
if needed replace tube according to instructions
Replace roller assembly
Refer to motor section
Install correct tube size according to
instructions or adjust settings
Replace roller assembly