11
D. Sensor Installation
Carefully unpack the ORP and pH
sensors and remove the plastic pro-
tective cap(s) from the sensor tip(s).
Store the protective cap(s) inside
the controller enclosure for future
use when winterizing or reshipping.
Slide the sensor inside the compres-
sion fitting on the flow cell assembly
or the main pool line so that the
sensor tip is below the water line in
the pipe. Tighten the nut of the com-
pression fitting until it is finger tight.
DO NOT USE A WRENCH.
Attach the sensor connector(s) to
the proper fittings on the controller
box. (see Figure 4, #7 and #14).
E. Electrical
Use the plug-in transformer provided to attach to the 110V out-
let. Low voltage (24V) wiring can be run from the transformer
output to the controller input. Low voltage wiring can then be
run from the controller output to the 24V solenoid valve.
F. Start-up Operations
1.
Determine the free sanitizer level of your swimming pool or
spa using a DPD test kit. It should be between 1.0 and 3.0
ppm—adjust if required.
The controller will not operate if the sanitizer level is below
0.2 ppm (below 100 mV).
2.
Check the pH level of your pool or spa with a test kit. The
pH should be maintained between 7.2 and 7.6 to maximize
sanitizer efficiency and ensure the accuracy of the con-
troller. A pH level above or below this range will cause
inaccurate sensor readings. High or low pH levels can also
cause irritation to swimmers as well as other problems
associated with the pool and equipment.
Coil Extra
Sensor Cable
Externally
Controller
Sensor
Compression
Fitting
PVC Tee
Sensor Tip