RANCO. P/N: 012-4834. DUAL PRESSURE CONTROL., SPST SWITCH., CONVERTIBLE RESET  SELECTOR SCREW FOR MANUAL RESET OR AUTOMATIC RESET., HIGH PRESSURE RANGE: 150 PSIG TO 450 PSIG., LOW PRESSURE RANGE: 10" VACUUM TO 100 PSIG., DIFFERENTIAL: 10 PSI TO 40 PSI., CONNECTIONS: TWO 48" LONG COPPER CAPILLARY TUBES WITH 1/4" BRASS FEMALE FLARE NUTS., NEMA 1 ENCLOSURE., REPLACES: 012-1551 RANCO & PENN P70MA-1 & P70LB-1., HAS A RESET BUTTON, RANGE ADJUSTMENT SCREW, CONVERTIBLE SELECTOR SCREW, DIFFERENTIAL ADJUSTMENT SCREW ON TOP OF CONTROL., HAS A MANUAL TEST OPERATION TAB., VOLTAGE: 24 VAC, 120VAC, 240VAC., SCREW TERMINALS., 7/8" OD HOLE FOR 1/2" CONDUIT CONNECTION., OVERALL DIMMENSIONS: 5 3/8" LONG X 3 1/2" HIGH X 2" WIDE., STEEL BODY AND PLASTIC COVER., WHITE/SILVER/BLUE/GOLD COLORED., ORIGINAL GENUINE RANCO OEM REPLACEMENT PART., GUARANTEED TO WORK PERFECTLY., BRAND NEW CONDITION., NEVER USED., INCLUDES: ONE DUAL PRESSURE CONTROL, MOUNTING BRACKET, HARDWARE, INSTALLATION INSTRUCTIONS, PACKAGING AND BOX., I CAN SUPPLY MORE PICTURES IF REQUESTED.

O12-4834

O Series Pressure Controls

The Ranco® Dual Pressure Controls combine the functions of a single high-pressure limit control and a single low-pressure control in one unit with a single pole, single throw (SPST) switch.

Features and Benefits

• Convertible feature allows selection of manual or reset function when operating at high pressure (O12‑4833/O12-4834)

• A wide range of high-pressure manual or automatic reset controls can be replaced (O12-4833 or O12‑4834)

• A high-pressure limit is combined with suction pressure sensing to provide temperature control and/or pump down

• High-limit adjustment screw

• Low-pressure differential and range adjusting screws

• Selector screw for manual or automatic

• Reset button

• Low-pressure scale plate

• High-impact plastic cover with center mount screw

• High-pressure scale plate

• Super Cap® capillary protection system

• Color-coded for easy identification of pressure line

• High-side capillary flare nut (silver)

• Low-side capillary flare nut (brass)

• Cap included on all Australia temperature controls. Optional for all other regions.

Dual-pressure controls connect to a refrigeration system's high- and low-pressure lines and make or break an electrical connection when pressures exceed or drop below the set point. They feature a control unit that helps protect the sensitive components and allows the user to view and adjust the setpoint. Both the high- and low-pressure sides are monitored and controlled independently. This allows the system to react to various conditions and operate efficiently and safely.

Brand: RANCO

Manufacturer Part Number: O12-4834

Series: O Series

Product Type: Dual Pressure Control

Minimum Pressure Range - Low Side: 10 in Hg

Maximum Pressure Range - Low Side: 100 psi

Maximum Differential Pressure - Low Side: 40 psi

Minimum Pressure Range - High Side: 150 psi

Maximum Pressure Range - High Side: 450 psi

Maximum Differential Pressure - High Side: 70 psi

Rated Voltage: 240V AC; 24V AC

Capillary Tube Length: 48 in

Low Side Reset Type: Automatic Reset

High Side Reset Type: Convertible

Compatible Refrigerant: R12; R134A; R22; R502

Contact Form: SPST

Contact Rating (AC): 24 A @ 120/240V

Mounting Orientation: Any Position

NEMA Rating: 1

IP Rating: IP44

Bellows Material: Copper

Pressure Connection Gender: Female

Pressure Connection Size: 1/4 in

Pressure Connection Type: Flare

Pressure Type: Differential

Includes: Non-Conductive Cover, Pressure Control, Mounting Bracket, Hardware, Instructions, Box

Standards: CE Certified; cULus Listed; cURus Listed

Process Connection: 1/4 in Female Flare

UNSPSC: 41112411

Country of Origin: Mexico (subject to change)

Description:

These controls offer a tailored variety of ranges and options for R12, R22, and R502 refrigerants. Low and high pressure functions are combined into a single control with one switch

Features:

• Exclusive "convertible" reset for manual or automatic high pressure reset on some models

• NEMA 1 enclosure with non-conductive cover

• Front-located captive cover screw

• Large, easy-to-read scale plate

• SUPER CAP® capillary protection system

• Universal mounting and compact design

• Color coded flare nuts

Specs:

Cut-In PSI: 10" to 100 PSI

Cut-Out PSI: 150 to 450 PSI

Switch Action: SPST

Reset Type: Manual

Low Pressure Differential: 10 to 40 PSI

High Pressure Differential: 70 Fixed

Capillary Length: 48"

Product Type: Dual Pressure

Pressure Range: 150 to 450 psi / 10" to 100 psi

Min Pressure (PSI): 150

Max Pressure (PSI): 450

Connection Type: 1/4" SAE flare nut

Ranco dual pressure controls are used for either operating or protecting commercial refrigeration and air conditioning systems.  Within one NEMA 1 enclosure, they are a combination of both high and low pressure controls interconnected to operate a common switch.

Ranco dual pressure controls are suitable for R12, R22 and R502 refrigerants and are available with either male flare or capillary with flare nut pressure connections.

The O12 series, with a single pole, single throw switch (SPST), will directly control a single phase compressor;  the O12 may also be used with a contactor for pilot control for single and three-phase compressors.  The O22, with a double pole, single throw switch (DPST), will directly control single of three-phase compressors.  The electrical ratings inside the control cover must not be exceeded.

The low pressure closes (cuts-in) the switch on rise of compressor suction pressure and opens (cuts-out) the switch on pressure drop.  The high pressure function overrides to open the switch as the compressor discharge pressure rises.

• Low Pressure (Open Low): 10" to 100 PSI, 10 to 40 PSI differential, automatic reset.

• High Pressure (Open High): 150 to 450PSI, 70 PSI fixed differential, convertable reset (manual or automatic)

• Capillary: 48" with 1/4" SAE flare nut.

• Switch: SPST

• FLA: 24Amps @ 120VAC/240VAC