ICM head pressure controls operate as temperature sensitive motor fan speed controls. Head pressure is regulated during low ambient conditions by varying the amount of airflow through the condenser. This helps ensure sufficient pressure across the expansion valve, preventing costly downtime and/or loss of valuable perishable goods.

ICM Controls Head Pressure Control, 24 VAC, 100 mA to 10 A, 50/60 Hz Frequency, 4 VA Power, Surface Mounting, 120/208/240 VAC Supply, -40 to 176 deg F, 4-3/4 in L X 3-3/16 in W X 1-3/4 in H Dimensions, For Use With: Air Conditioner and Refrigerators

• Integral heat pump bypass circuitry allows electronic bypass of speed control
• Built-in transformer eliminates cost, reduces installation time and simplifies wiring
• Helps prevent evaporator freeze up, low pressure cutouts and liquid slugged compressors in low ambient conditions
• Features hard start, low temperature cutoff, high temperature bypass
• Ideal for line voltage air conditioning and refrigeration

• Catalog https://assets.unilogcorp.com/267/ITEM/DOC/ICM_Controls_ICM326HNC_LF_Catalog.pdf
• Instruction/Installation Manual https://assets.unilogcorp.com/267/ITEM/DOC/ICM_Controls_ICM326HNC_LF_Instruction_Installation_Manual.pdf