Classic Series
www.stenner.com
36
CLEANING THE POINT OF INJECTION
continued
1.
Turn metering pump off and unplug cord. Disable water pump or auxiliary equipment
electrical supply.
2.
Depressurize system and bleed pressure from pump discharge line.
3.
Loosen and remove connecting nut and ferrule from the check valve or injection
fitting to disconnect discharge tubing.
Duckbill Check Valve, go to
4.
Injection Fitting, skip 4 and go to
5.
4.
•
Unscrew the top fitting (check valve body) to disassemble. The bottom fitting
(injection fitting with arrow) should remain attached to the pipe.
•
Remove duckbill from check valve body and replace it.
•
Examine o-ring in the injection fitting and replace if deteriorated or damaged.
5.
Insert a #2 Phillips head screwdriver through injection fitting into the pipe to locate
or break up accumulated deposits. If screwdriver cannot be inserted, drill the deposit
out of the injection fitting (DO NOT drill through the opposite pipe wall).
More on next page
Periodic inspection and cleaning of the point
of injection will maintain proper pump
operation and provide maximum tube life.
Replace Duckbill
Clean out accumulated
deposits with a #2 Phillips
head screwdriver.
