White-Rodgers 1609-90 Control

The White-Rodgers 1609-90 is a heavy-duty hydraulic action refrigeration temperature control designed specifically for demanding commercial and industrial applications. This mechanical control is built for zoning systems where multiple controllers manage a common compressor via separate solenoid refrigerant valves in each zone. Engineered with a two-circuit hook-up (SPST), the 1609-90 provides a close-on-rise switch action to ensure positive system response as temperatures climb. This model features a wide temperature range from -20°F to +50°F (-30°C to +10°C), supported by a 5-1/4" sensing bulb and a versatile 8-foot capillary for flexible remote mounting. The rugged, dustproof steel case includes convenient top and bottom knockouts for clean field wiring. With high electrical ratings, this remote bulb controller can frequently operate equipment directly without requiring additional relays or motor starters, streamlining installation for the service technician and reducing potential failure points in the system.

• Commercial Reliability: Built with a hydraulic action element to provide consistent switching and long-term durability in walk-in coolers and industrial refrigeration.
• Adjustable Differential: Features a field-adjustable differential range of 3.5°F to 40°F, allowing for precise cycling control and preventing excessive compressor wear.
• Dual-Scale Monitoring: The calibrated temperature dial includes both Fahrenheit and Celsius scales, visible through the cover for quick setpoint verification.
• Flexible Installation: The 8' capillary tubing allows the sensing bulb to be positioned in the optimal airflow path while keeping the switch housing in an accessible service area.
• Heavy-Duty Contact Rating: Supports line voltage applications (up to 240V) with high inductive capacities, suitable for direct compressor or solenoid control.

Is the bulb mounting clamp included with this model?
Unlike other 1609 series models, the 1609-90 does not typically include a bulb mounting clamp; ensure you have appropriate hardware on hand for securing the 5-1/4" sensing element.

Can this control be used for heating applications?
This specific model is a close-on-rise controller, meaning it completes the circuit when the temperature increases. It is primarily designed for cooling/refrigeration cycles and zoning rather than standard heating applications.

What is the primary difference between the 1609-90 and standard controllers?
The 1609-90 is specifically optimized for two-circuit hook-ups and zoning configurations, making it the preferred choice for multi-evaporator systems sharing a single compressor rack.

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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.