Emerson Alco 099008 Control

The Emerson Alco 099008 (Model PS2-Y7A) is a high-performance dual pressure control designed for precise regulation of HVACR compressor cycles. This control features a low-pressure range of 9"Hg to 102 psig with an adjustable differential of 15 to 73 psig, ensuring optimal suction side management. The high-pressure side operates between 87 and 464 psig with a fixed differential, providing critical system protection. Engineered for flexibility, the low-pressure side utilizes an auto reset, while the high-pressure side features a convertible auto/manual reset toggled via a convenient internal switch. The unit includes standard 1/4" SAE male flare connections for seamless integration into existing lines. As a direct replacement for 097954 and PS2-A7A, verify your field setpoints to ensure proper calibration. The heavy-duty DPST contacts provide reliable switching for high-load commercial mechanical pressure switch applications, maintaining system integrity under demanding refrigeration cycles.

• Universal Compatibility: Serves as a direct drop-in replacement for Emerson Alco 097954 and PS2-A7A models.
• Dual Function Control: Combines low-pressure cutout and high-pressure safety limits into a single, compact housing to save manifold space.
• Convertible Reset Logic: Allows technicians to switch between manual lockout and automatic reset on the high-pressure side depending on site requirements.
• Robust Construction: Built with high-grade bellows to withstand pulsation and vibration typical in commercial refrigeration systems.

Common Questions

Is the PS2-Y7A compatible with R-410A systems?
Yes, the 87 to 464 psig high-pressure range and robust bellows construction allow the dual pressure switch to function effectively with most high-pressure refrigerants, including R-410A.

What is the difference between the PS2-Y7A and the PS2-A7A?
The 099008 (PS2-Y7A) is the modernized version. While physically similar, technicians must verify the pressure setpoints and differential requirements before swapping, as specific factory settings may vary by application.

How do I switch between manual and auto reset?
The high-pressure side features a convertible reset mechanism accessible under the cover, allowing the technician to select the preferred safety protocol for the compressor protection circuit.

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.