Stenner Pumps SVP Serie Manual De Instalación Y Mantenimiento página 31

CLEANING THE POINT OF INJECTION
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 injection check valve or
injection fitting to disconnect discharge tubing.
26-100 psi Model (includes injection check valve)
• 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 if deteriorated or swollen
(replace duckbill with every tube change). If clogged, clean or replace (yearly
replacement recommended).
• Examine O-ring in the injection fitting and replace if deteriorated or damaged.
4. 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.)
Clean out accumulated
deposits with a #2 Phillips
head screwdriver.
Periodic inspection and cleaning of the point
of injection will maintain proper pump
operation and provide maximum tube life.
Replace Duckbill
US and Canada 800.683.2378, International 904.641.1666
continued
More on next page
31