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
