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2221 Standard Ave.
Santa Ana, CA 92707
Toll free: 800-676-SWIM
Office: 714-754-4044
Fax: 714-754-1405
1-800-676-SWIM
info@knorrsystems.com
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Preventative Maintenance
SENSOR PROBE CLEANING
Types of Probes:
White Probe - Measures HRR on an ECS system
Yellow Probe - Measures pH
Blue Probe - Measures HRR
Sensor probes need to be cleaned periodically to remove oils, mineral deposits and other debris to function properly. Sensor probes on smaller bodies of water, especially spas, will need to be cleaned more often.
Procedure
- Close sample stream assembly valves (2 total)
- Turn chemical feed pumps off
- Disconnect probe wires from controller
- Carefully unscrew probe from sample stream assembly making sure not to bind wire
- Spray Fantastic (or 409) on tip of probe and gently scrub with toothbrush
- On blue probe, scrub white Teflon ring on probe
- On the yellow probe, scrub white Teflon ring at base of glass bulb
- Rinse with water
- Agitate tip of probe in light solution of acid (10 parts water to 1 part acid)
- Rinse with water
- Screw probes back into sample stream taking care not to bind wire
- Connect sensor wires to controller
- Open both sample stream assembly valves
- Only open the valve returning to the suction side of the pump 45 degrees to create a positive pressure in the sample stream
- After 20 minutes, take a manual chemical reading
- Re-calibrate controller if necessary
- Turn feed pumps back on
If you have any questions, call Knorr Systems at 800-676-SWIM.
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