Emerson Alco 099024 Pressure Control

The Emerson Alco 099024 (Model PS1-X3K) is a high-performance single pressure control designed for low-pressure side monitoring in commercial refrigeration, air conditioning, and heat pump systems. Engineered as a direct replacement for 097904, this auto reset pressure switch features an adjustable setpoint range from 9" Hg to 102 psig and a flexible differential range of 15 to 73 psig. The inclusion of extended adjustment spindles allows for precise field calibration, while the heavy-duty SPDT contacts (rated for 120V/240V) provide reliable switching for compressor cycling or loss of charge protection. This unit comes equipped with a 36" capillary tube and a 7/16"-20 SAE female nut featuring an integrated Schrader valve opener, ensuring a secure and efficient connection to HVACR refrigeration systems. Built with copper bellows and silver cadmium contacts, the PS1 series pressure control is compatible with HFC and HCFC refrigerants, offering a chatter-free, snap-action switch for mission-critical environmental control applications.

• Universal Compatibility: Serves as a direct 1:1 replacement for the Alco 097904 and PS1-X3K, minimizing downtime during field repairs.
• Precision Calibration: The adjustable low pressure range and differential settings allow technicians to fine-tune compressor cutout and cut-in points for optimized system performance.
• Durable Construction: Features laser-welded bellows and premium contact materials for superior wear resistance in demanding condensing unit environments.
• Simplified Installation: The 3-foot capillary tube with Schrader opener eliminates the need for additional adapters, reducing potential leak points in the refrigerant line.

Is the PS1-X3K compatible with R-410A systems?
Yes, this adjustable pressure switch is rated for use with most non-corrosive HFC and HCFC refrigerants. However, always verify that the maximum working pressure of 290 psig is not exceeded during high-side surges.

What is the purpose of the extended adjustment spindles?
The extended spindles allow for easier manual adjustments of the cut-in and cut-out pressures without requiring specialized tools or removing the entire cover in tight HVAC cabinet spaces.

Can I use this for high-pressure cut-out applications?
This specific model is a low pressure control (Range 3). For high-pressure protection, a Range 5 controller (such as the PS1-X5A) should be utilized to handle the higher psig thresholds required for condenser side safety.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.