US and Canada 800.683.2378, International 904.641.1666
S Series FW 3.02.02
91
TROUBLESHOOTING – PUMP TUBE
NOTICE:
A leaking pump tube damages the metering pump. Inspect pump frequently for leakage and wear. Refer to
Tube Replacement section for additional safety precautions and instructions.
PROBLEM
POSSIBLE CAUSE
SOLUTION
Tube leaking
Pump tube ruptured
Replace pump tube, ferrules; center tube
Calcium or mineral deposits
Clean injection fitting, replace pump tube,
ferrules; center tube
Excessive back pressure
Verify system pressure against tube psi,
replace tube if needed
Tube is twisted, S30 only
Replace pump tube, ferrules; center tube
Tube not centered, S30 only
Replace pump tube, ferrules; center tube
y
Tube is twisted, S40 only
Replace the tube.
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. Use your fingers
to center the tube on the rollers.
Tube life is shortened
Chemical attack
Check chemical compatibility
Mineral deposits at injection point
Remove deposits, replace pump tube,
ferrules; center tube
Sediment blockage at check valve
Clean injection fitting, ensure suction
line is 2-3" above bottom of tank
Degraded check valve duckbill
Replace duckbill at every tube change
Duckbill in wrong orientation
Reverse duckbill orientation
Tube manually stretched or pinched
Follow tube replacement instructions
during replacement
and allow roller assembly to stretch
tube into place
Seized rollers caused abrasion on tube
Clean roller assembly or replace
Exposure to heat or sun
Do not store tubes in high temperatures
or in direct sunlight
Tube connection is leaking
Missing ferrule on 1/4" line
Replace ferrule
Crushed 1/4" ferrule
Replace ferrule
1/4" ferrule in wrong orientation
Beveled ends of ferrules face pump.
Tubing should bottom into all fittings
Missing 3/8" nut sleeve or gripper Replace nut
