Stenner Pumps CLASSIC Serie Manual De Instalación Y Mantenimiento página 26

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
Tube leaking
Tube life is shortened
Tube connection is leaking
26
Classic Series
POSSIBLE CAUSE
Pump tube ruptured
Calcium or mineral deposits
Excessive back pressure
Tube is twisted
Tube not centered
Chemical attack
Mineral deposits at injection point
Sediment blockage at check valve
Degraded check valve duckbill
Duckbill in wrong orientation
Seized rollers caused abrasion on tube
Exposure to heat or sun
Missing ferrule on 1/4" or 6 mm line
Crushed ferrule
Ferrule in wrong orientation
3/8" nut loose
Missing ferrule in 3/8" adapter
Sleeve and/or plastic gripper inside
3/8" connecting nut is missing
damaged, or incorrectly assembled
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SOLUTION
Replace tube according to instructions
Clean injection fitting; replace tube
according to instructions
Verify system pressure against tube psi,
replace tube if needed
Replace tube according to instructions
Replace tube according to instructions
Check chemical compatibility
Remove deposits, replace pump tube,
ferrules; center tube
Clean injection fitting, ensure suction
line is 3" above tank bottom. Use
suction line strainer.
Replace duckbill at every tube change
Reverse duckbill orientation
Clean roller assembly or replace
DO NOT store tubes in high temperatures
or in direct sunlight
Replace ferrule
Replace ferrule
The ferrule's beveled end should face the
tube fitting
Secure adapter and tighten 3/8" nut
as needed
Replace with new adapter fitting or
insert new ferrule into adapter
If damaged or missing, replace entire 3/8"
connecting nut; beveled end of gripper
faces nut; wider end of sleeve faces gripper