Stenner Pumps CLASSIC Serie Manual De Instalación Y Mantenimiento página 25

TROUBLESHOOTING – PUMP HEAD
PROBLEM
Components 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 high
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
Sleeve and/or plastic gripper inside
3/8" connecting nut is missing
damaged, or incorrectly assembled faces nut; wider end of sleeve faces gripper
Injection point is clogged
Clogged suction and/or discharge
line and/or check valve
Life of pump tube exhausted
Suction line is flush with
the nose of the weighted strainer
Life of pump tube exhausted
Rollers worn or broken
Injection point is restricted
Incorrect tube size
High system back pressure
Stripped roller assembly
Feed rate control problem
Motor problem
Incorrect tube size or setting
Roller assembly broken
Malfunctioning feed rate control
Incorrect motor rpm
US and Canada 800.683.2378, International 904.641.1666
SOLUTION
Check chemical compatibility
Replace tube according to instructions
Replenish solution
Position suction line 3" above bottom
of tank
Inspect or replace suction line
Replace ferrules
If damaged or missing, replace entire 3/8"
connecting nut; beveled end of gripper
Inspect and clean injection point
Clean and/or replace as needed
Replace tube according to instructions
Pull suction line approximately 1" from
bottom of strainer, cut bottom of suction
tubing at an angle
Replace tube according to instructions
Replace roller assembly
Inspect and clean injection point
Replace tube with correct size
Verify system pressure against tube psi,
replace tube if needed
Replace roller assembly
Refer to feed rate control section
Refer to motor section
Replace tube with correct size or
adjust settings.
Replace roller assembly
Refer to feed rate control section
Replace with motor that matches pump model
Classic Series
25