With switch and gauge
Series G Model B pump also is available with an option that includes tubing to a pressure gauge and
switch as shown in figure 6-18 In the event of a diaphragm leak the process fluid is trapped inside the
system and pressure switch (760) is tripped to set an alarm or shutdown.
This leak detection system is not filled with any fluid and will only be pressurized in the event of a seal
failure. A drain (790) is provided for pressure relief prior to system disassembly.
ELECTRICAL CONNECTIONS
Ensure that the electrical supply matches the pump motor nameplate characteristics.
Before operating the pump, check the direction of rotation of the motor to be sure it matches the direction
of the arrow stamped on the motor (rotation should be clockwise when viewed from the top of the motor). If
motor rotation is incorrect, refer to the motor data plate or motor manufacturer's instructions for reversing.
CAUTION:
Operation with the wrong motor rotation will damage the pump and motor and void the warranty.
CAUTION:
Do not forget to connect the pump to an earth ground!
Electric protection of the motor (fuses, overload meters or relays) should correspond to the rated current
indicated on the motor data plate.
FigureFigure 22--55..
8
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