Description
The Johnson Controls P70AB-2CM is a PENN P70 Series pressure control for low pressure applications with a 20 in. Hg to 100 psig (-68 to 690 kPa) setpoint range. Per the manufacturer, the P70, P72, and P170 controls for low pressure applications "are designed primarily for low-pressure cut out control, pump-down control, and capacity control on commercial refrigeration and air conditioning applications. These controls are available in several pressure ranges and are compatible with most common refrigerants. You can also use the controls on other non-corrosive fluid applications."
A pressure-actuated bellows on the control is connected to a pressure tap on the controlled system by a capillary or a field-installed hose; the bellows responds to system pressure changes and operates a snap-action electrical switch. The all-steel case and cover are built to provide long lasting, rugged protection for internal components, and the sight-set calibrated pressure adjustment displays a visible pressure scale that is fully adjustable through the range without removing the cover. In the P70 model code the first letter after P70 identifies the switch action and the second letter identifies the enclosure and adjustment style.
* Brand / Manufacturer: Johnson Controls (PENN)
* Model / Part Number: P70AB-2CM
* Series: P70 Series Controls for Low Pressure Applications
* Switch Action: SPST, open-low, automatic reset (code letter A) - contacts open to M1 on pressure fall (cut-out) and close to M1 on pressure rise (cut-in)
* Enclosure: Type 1 (NEMA 1), with adjustment knob (code letter B)
* Setpoint Range: 20 in. Hg to 100 psig (-68 to 690 kPa)
* Differential: Minimum 7 psi (48 kPa); Maximum 50 psi (345 kPa), adjustable
* Pressure Connection: 36 in. copper capillary with 1/4 in. SAE flare nut
* Pressure Rating: 325 psig (2,239 kPa) maximum overpressure; 100 psig (690 kPa) maximum working pressure
* Limited Knob Adjustment: Limited knob adjustment supplied, but not assembled
* Electrical Ratings (SPST): 120/208/240 VAC - 24.0 full load amps, 144.0 locked rotor amps, 24.0 resistive amps; 480 VAC - 5.0 FLA, 30.0 LRA; 600 VAC - 4.8 FLA, 28.8 LRA; pilot duty 125 VA at 120-600 VAC, 20 VA at 120-300 VDC
* Ambient Temperature: -40 to 140°F (-40 to 60°C)
* Case and Cover: Galvanized steel case; plated and painted steel cover
* Dimensions (H x W x D): 3-1/4 x 4 x 2-1/16 in. (83 x 101 x 53 mm)
* Shipping Weight: 2.4 lb (1.08 kg), individual pack
* Compliance: cULus Listed, UL 60730; Controllers, Refrigeration - SDFY.SA516 (U.S.), SDFY7.SA516 (Canada)
* Mounting Accessories: BKT38A-600R L-shaped horizontal surface mounting bracket; BKT40A-600R vertical surface mounting bracket
Typical applications include low-pressure cut out, pump-down and capacity control on commercial refrigeration and air conditioning systems, and other non-corrosive fluid service. Except for models listed as refrigeration pressure cut out controls, use this control only as an operating control - where failure or malfunction could lead to personal injury or property damage, incorporate additional supervisory, alarm, safety or limit devices into the control system. Mount the control upright and level, use copper conductors only, and avoid sharp bends in the capillary tubing. Do not make field repairs.
The M suffix on this code is not itemised in any Johnson Controls selection chart; the pressure data shown is that published for the base P70AB-2C. Confirm the setpoint range, differential and pressure connection on the control nameplate before ordering.. Johnson Controls. Johnson Controls. P70AB-2CM.
Warranty Information
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