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If the reading drops significantly under load or fails to stay above 10-12mV when connected
With a rating of 120/240 VAC at 10 Amps
Always cross-reference the part number in the specific unit's service manual
Look for visible cracking
Cleveland Controls AFS-271 Switch If the reading drops significantlyThe Cleveland Controls AFS 271 is a professional grade air pressure sensing switch designed for critical proving switch applications in HVAC and energy management systems. This adjustable air flow switch offers a precise set point range of 0. 05" to 2. 0" w. c., making it an essential component for monitoring positive, negative, or differential pressure in commercial burners and furnaces. Engineered with a durable plated housing and a silicone
