Stenner M128 Serie Manual De Instalación Y Mantenimiento página 22

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
22
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
Tube manually stretched or
pinched during replacement
Seized rollers caused abrasion on tube
Exposure to heat or sun
Missing ferrule on 1/4" line
Crushed ferrule
Ferrule in wrong orientation
www.stenner.com
SOLUTION
Replace pump tube, ferrules; center tube
Clean injection fitting, replace pump tube,
ferrules; center tube
Verify system pressure against tube psi,
replace tube if needed
Replace pump tube, ferrules; center tube
Replace pump tube, ferrules; center tube
Check chemical compatibility
Remove deposits, replace pump tube,
ferrules; center tube
Clean injection fitting, ensure suction
line is 2" above bottom of tank
Replace duckbill at every tube change
Reverse duckbill orientation
Follow tube replacement instructions
and allow roller assembly to stretch tube
into place
Clean roller assembly or replace
Do not store tubes in high temperatures
or in direct sunlight
Replace ferrule
Replace ferrule
Reverse orientation of ferrule