Stenner Pumps S FIXED SERIE Manual De Instalación Y Mantenimiento página 26

INSTALLATION
4. Hand tighten the injection fitting into the FNPT fitting.
Injection Fitting
a. Install connecting nut and ferrule to the pump discharge line. Insert
discharge line into injection fitting until it reaches base of fitting.
b. Finger tighten connecting nut to fitting. For 3/8" connections wrench tighten
one additional 1/2 turn. If leak occurs, gradually tighten the 3/8" connecting
nut as required.
Duckbill Check Valve or Ball Check Valve
a. Prior to connection, test check valve and NPT threads for leaks by pressurizing
system. If necessary, tighten an additional 1/4 turn.
b. Install connecting nut and ferrule to the pump discharge line. Insert
discharge line into check valve body until it reaches base of body.
c. Finger tighten connecting nut to fitting. For 3/8" connections wrench tighten
one additional 1/2 turn. If leak occurs, gradually tighten the 3/8" connecting
nut as required.
5. Prime the pump.
- Fixed: Connect the power.
- Variable: Set potentiometer to 100.
6. Re-pressurize system, observe chemical flow as actuated by system and check all
connections for leaks.
7. After suitable amount of dosing time, perform tests for desired chemical readings. If
necessary, fine tune dosing levels by adjusting solution strength.
To allow quick access to the point of injection, installation of shut-off valves
is recommended.
Regular cleaning of the check valve is needed to ensure proper functioning.
Remove, inspect and clean components at every pump tube replacement.
Replace components at least annually.
26
S Fixed & Variable Series
continued
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