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McDonnell & Miller General Catalogue Industrial Controls

McDonnell & Miller Series PS-800 – Probe Type Low Water Cut-Off

Standard Features
• Green LED indicating power is on
• Red LED indicating low water condition
• 30 second DOM
• Test button
• Self-Cleaning probe
• No lock out with loss of power if probe is in water
• Provisions to add water feeder of alarm
Models available with:
• 120 VAC
• 24 VAC
• ‘U’ probe (extended barrel)
• ‘RX2’ probe (remote)

The Series PSE-800 probe type LWCO uses patented technology to monitor changes in water conductivity. When defined parameters are exceeded the new PSE-800 makes a decision to shut the burner off based on the volatility/variability of the resistance settings. This new patented technology provides the best protection possible without turning off the boiler unless a low water condition exists. As an added measure of safety, the control will turn off the boiler if it recognizes an out-of-water condition when the sensitivity threshold is exceeded.

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