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Basic Analog Constant Pressure Installation Procedures:
1. Install the analog pressure transducer and emergency over-pressure switch in the water line.
2. Remove protective rubber boot from the over-pressure switch, insert factory provided duplex cable
through the boot, and connect a twisted pair of wires to the normally closed (NC) and common I
terminals of the switch.
CAUTION: The use of shielded cable is recommended. Regular wire may induce capacitance in the line
and corrupt the signals from the pressure switches.
3. Attach the cable shield to the Control Terminal Ground post located in the drive enclosure adjacent
to the Control Terminals.
4. Connect the emergency over-pressure limit switch to the AUX2 Control Terminal and COM
(common). Use a jumper wire to connect AUX2 and COM if no limit switch is present. Also, jumper
AUX1 to COM if no external switch is connected to it.
5. Navigate through the keypad to 1.3.1 SYSTEM CONFIG. Select 2 to set the system configuration
for an analog CP system (see Table 20 for details).
6. To set the emergency over-pressure limit switch, remove the rubber boot from the switch and pry
the plastic plug from the top of the switch housing to access the pressure adjustment screw. Use
an Allen wrench to adjust the pressure setting of the switch – jumper the AUX1 terminals and run
the pump in the AUTO mode, and observe the pressure gauge, turning the Allen screw to adjust
the pressure shut-off point. The emergency over-pressure limit switch should be set at least
10 PSI higher than the desired constant pressure set point.
7. Connect the remaining twisted pair of wires to the + and – terminals of the transducer.
8. Connect the positive terminal of the transducer to the I1+ Control Terminal, and the negative
terminal to the I1- Control Terminal.
9. If a redundant analog transducer is used, connect it to the I2+ and I2- Terminals in likewise fashion.
See Section 5.5 for instructions on using an additional analog sensor.
CAUTION: It is critical that the positive terminal of the transducer is connected to the + terminal of the 4-
20mA Control Terminal, and likewise for the negative terminals.
10. Set the 1.4.1 ANALOG SETPOINT 1 on the keypad (see Table 20 for details)
11. Set the keypad to AUTO mode to operate the system.
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