Stenner Pumps SVP Serie Manual De Instalación Y Mantenimiento página 21

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
POSSIBLE CAUSE
Pump tube ruptured
Calcium or mineral deposit
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" or 6 mm line
Crushed ferrule
Ferrule in wrong orientation
3/8" nut loose
Missing ferrule in 3/8" adapter
US and Canada 800.683.2378, International 904.641.1666
SOLUTION
Replace pump tube, ferrules; center tube
Clean injection fitting, replace pump tube,
Verify system pressure against tube psi,
replace tube if needed
Replace pump tube according to instructions
Replace pump tube and center it
Check chemical compatibility
Remove deposits, replace pump tube,
ferrules; center tube
Clean injection fitting; Ensure suction line
is 3" above bottom of the tank
Use a suction line strainer
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
Secure adapter and tighten 3/8" nut
as needed
Replace with new adapter fitting or
insert new ferrule into adapter
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