US and Canada 800.683.2378, International 904.641.1666 Classic Series
25
TROUBLESHOOTING – PUMP HEAD
PROBLEM POSSIBLE CAUSE SOLUTION
Roller Assembly Motor not locked Fixed Rate Pumps: Place tube housing latch
will not expand or into motor slot; Adjustable Rate Pumps:
collapse with Set feed rate control to 10
tube housing cover
Stripped or cracked Replace roller assembly
roller assembly hub
Components cracking Chemical attack Check chemical compatibility
Chemical intrusion from tube failure Identify and correct cause, clean components of
chemical & replace tube according to instructions
Pump head leaking Pump tube rupture Identify and correct cause, clean components of
chemical & replace tube according to instructions
No pump output, Depleted solution tank Replenish solution
pump head rotates
Pump suction line weight is Position suction line 3" above bottom
above solution of tank
Leak in the suction line Inspect or replace suction line
Ferrules installed incorrectly, Replace ferrules
missing or damaged
Sleeve and/or plastic gripper inside Replace if damaged or missing. Reorient if
3/8" connecting nut is missing incorrectly assembled; gripper beveled end
damaged, or incorrectly assembled faces nut; sleeve wide end faces gripper
Injection point is clogged Inspect and clean injection point
Clogged suction and/or discharge Clean and/or replace as needed
line and/or 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 the Pull suction line approximately 1" from bottom of
weighted strainer tubing at an angle strainer, cut bottom of suction
Low pump output, Life of pump tube exhausted Replace tube according to instructions, schedule
pump head rotates 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 Replace roller assembly
pump head roller assembly hub
doesn’t rotate
Feed rate control problem Refer to feed rate control section
Motor problem Refer to motor section
Pump output high Incorrect tube size or setting Refer to flow rate output chart and replace
tube with correct size or adjust settings
Roller assembly broken Replace roller assembly
Malfunctioning feed rate control Refer to feed rate control section
Incorrect motor rpm Replace with motor that matches pump model
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