Emerson Alco 099027 Control

The Emerson Alco 099027 is a high-performance PS1-X5K single pressure control engineered for critical monitoring in refrigeration and HVACR systems. As a veteran-grade adjustable pressure switch, this unit offers an upper setpoint range of 87 to 464 psig and a technical differential setpoint between 44 and 218 psig. Designed specifically as an automatic reset low pressure control, it facilitates seamless compressor protection and system cycling without manual intervention. This model serves as the direct 099027 replacement for discontinued or legacy parts, including the 097908, HK680016, and original PS1-X5K series. The hardware features a robust 1-meter (3 ft.) capillary tube equipped with a 1/4" flare nut for secure, leak-resistant connection to the high or low side of the circuit. Utilizing high-rated SPDT contacts, the Emerson 099027 pressure switch ensures reliable electrical switching for industrial cooling or heat pump applications, maintaining tight system tolerances under demanding operational loads.

• Precise Pressure Regulation: Features adjustable range and differential pointers in both psig and bar for exacting field calibration.
• Broad Compatibility: Engineered as a drop-in replacement for HK680016 and 097908, ensuring minimal downtime during retrofits.
• Durable Construction: Includes a heavy-duty cap tube and vibration-resistant 1/4" flare nut connection for long-term mechanical integrity.
• Circuit Versatility: High-rated SPDT contacts allow for flexible wiring in both control and alarm circuits.
• Field Security: Range and differential settings are individually lockable via an integrated tab to prevent accidental setpoint drift.

Is the Alco 099027 compatible with modern refrigerants?
Yes, the PS1-X5K is designed for standard HFC, HCFC, and CFC refrigerants used in commercial refrigeration and air conditioning systems, provided the operating pressures remain within the 87 to 464 psig range.

How do I calibrate the differential on this pressure switch?
Calibration is handled via the internal adjustment screws. Professionals use the visible scale pointers to set the cut-in and cut-out points, then secure the settings using the locking tabs to maintain accuracy.

What is the difference between the 099027 and the PS1-X5K?
The 099027 is the specific Emerson Alco part number for the PS1-X5K model configuration. They are technically identical and represent the same physical control unit used in the field.

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.