Electrical
(continued)
10
Step 1:
Mount the 4-20mA controller to a suitable vertical surface according to the installation manual supplied
with the controller.
Step 2:
Wire the #22 AWG orange ‘positive’ (+) lead from the ozone generator to the 4-20mA controller according
to the manual supplied with the controller.
Step 3:
Wire the #22 AWG purple ‘negative’ (-) lead from the ozone generator to the 4-20mA controller according
to the manual supplied with the controller.
Step 4:
Complete the required programming and calibration steps as outlined in the installation manual supplied
with the 4-20mA controller.
Step 5:
Air Preparation System Power:
120VAC systems only: plug the power cord into main power. 240VAC
systems only: the power cord must be hard wired to the main power source (Black-L1, White-L2/N and Green-Ground).
Notes: The prescribed air flow of the air prep system must be set to “atmospheric pressure” prior to use, follow
Step 5 of the ‘Start-up & Calibration' section. Warnings: Failure to calibrate may lead to premature failure of the
air preparation system. Vacuum from the venturi must be interrupted if the air prep system is not “ON;” failure
to do so will damage the air prep system.
External Loop Electrical Interface
Figure 5-1
120 VAC Signal
L1
Power from ORP, PPM,
pump or timer
N
120V
Coil
Interface Relay
External Loop
240 VAC Signal
L1
Power from ORP, PPM,
pump or timer
L2
240V
Coil
Interface Relay
External Loop
