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Electrode Installation
Controllers may come configured for various circulating water systems. Listed below are instructions for
cooling tower typical installations. Your specific installation requirements may differ but should conform to
these instructions as much as possible for proper operation.
Cooling Tower Installation
The standard probe(s) and/or flow assembly for cooling tower installations is constructed of schedule
80 PVC and supplied with 3/4" slip fittings for installing into a sample line. To insure proper operation
the sample line must have a flow rate of 3-10 gpm. Inlet pressure must be higher than outlet pressure in
order for water to flow past the electrode(s) to achieve the required rate. The probes are temperature
compensated for increased accuracy.
NOTES:
1.
Install an isolation valve on either side of the flow assembly so electrodes can be easily
isolated for removal and cleaning.
2.
A line strainer is recommended upstream from the probes to protect against fouling and
damage.
3.
Systems with a flow switch require 2-3 gpm flow rate to operate outputs.
!
WARNINGS:
1.
Electrodes are O-ring sealed, which if damaged will cause a leak.
2.
Do not exceed a water temperature range of 32°F to 140°F.
3.
Do not exceed a maximum pressure of 130 psi.
Typical Cooling Tower Installation Diagram
MAKE-UP
WATER METER
CIRCULATION PUMP
COOLING TOWER
BLEED VALVE
5
BLOWDOWN
CHILLER
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