Pump Tests
Testing the tank
47
Testing the tank
Disconnect, lock out, and tag power at the panel before starting to
service the pump.
When servicing unit use non-sparking tools and use caution when removing or installing
equipment to avoid generating a spark.
enerating a spark.
Equipment Required:
• Pressure generating equipment with appropriate fittings to connect to the 1/4’’ NPT tank test port
Procedure:
1.
Remove and retain the protective plug over service screw and turn the screw clockwise (see Figure 43). As
the screw approaches its bottom position, you will hear the system depressurizing. Continue turning the screw
until it can go no further.
2.
Remove and save the 1/4 ‘’ NPT tank test port plug and attach tank testing equipment (see Figure 44).
Figure 44. Tank Test Port On Manifold
3.
Depressurize tank and remove testing equipment. Apply an adequate amount of fresh, UL classified for
petroleum, non-setting thread sealant on the 1/4’’ NPT plug and replace it in the tank test port. Torque the
plug to 14 to 21 ft-lbs (19.4 to 29 N•m). For AG applications, Loctite 564 is recommended for all field
serviceable pipe threads.
4.
Turn the service screw counterclockwise all the way up. As the screw nears its top position you will hear the
check valve drop into position. Replace the protective plug over the service screw, and fully thread into place
to ensure a good seal.
5.
Turn the air purge screw 2 - 3 turns counterclockwise (see Figure 43).
The air purge screw is retained by a hitch pin to limit travel. Do not attempt to rotate
beyond 3 turns.
6.
Turn the pump on and let it run for about 2 minutes to purge air from the manifold’s hydraulic cavities. While
the pump is still running, turn the air purge screw clockwise until it is completely closed.
7.
The pump is now ready for normal operation.
WARNING
OFF
1/4'' NPT Tank test port
rjpumps/fig23.eps
WARNING