Cleaning The Point Of Injection - Stenner Pumps S FIXED SERIE Manual De Instalación Y Mantenimiento

CLEANING THE POINT OF INJECTION

1. Disconnect power. Disable any water pump or auxiliary equipment's electrical supply.
2. Depressurize system and bleed pressure from pump discharge line.
3. Loosen and remove the 3/8" or 1/4" nut & ferrule from the check valve or injection
fitting to disconnect discharge line.
Duckbill Check Valve
• Unscrew the check valve body (top fitting) and remove the duckbill
• Inspect and replace duckbill as needed
Ball Check Valve
• Unscrew the check valve body (top fitting)
and remove the ball check components.
Be careful not to stretch or damage
the spring.
• Inspect and replace parts as needed.
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.
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S Fixed & Variable Series www.stenner.com
continued
Check Valve Body
Seat
Ball faces smooth side of seat
Spring
O-Ring
Injection Fitting
Ball Check Valve