OCA Series

OCA Series
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OCA Series

Product catalog summary
Overview: The document details the specifications and features of the P-Bar Series and OCA Series air-cooled fluid coolers, designed for hydraulic or compressor oil cooling. These units are constructed with brazed aluminum for high performance and durability.
Key Features:
  • High oil flow capacity and performance.
  • Compact, all-aluminum core for converting water-cooled to air-cooled systems, reducing costs and corrosion.
  • Vertical air flow for heat recovery and advanced heat transfer technology.
  • Optional features: hydraulic motors, SAE ports, marine coatings, detachable legs.
Materials: Coolers are made with steel legs and shroud, brazed aluminum core, aluminum fan hub with plastic blades, and a TEFC motor.
Ratings:
  • Max operating pressure: 250 psi (17 BAR).
  • Max operating temperature: 300°F (150°C).
Ordering Information: Models available in sizes 400 to 3500, with options for motor type, connection type, and noise level.
Performance and Maintenance:
  • Performance curves based on a 100°F entering temperature difference.
  • Regular maintenance includes cleaning fins with compressed air and using chlorinated solvents.
  • Not suitable for ambient temperatures below 35°F (1°C).
Dimensions and Specifications: Detailed dimensions and specifications for each model, including fan motor data and noise levels.
Additional Notes:
  • Design changes may occur without notice.
  • Support piping and flexible connectors required for warranty.
  • Outdoor operation requires weather protection.
Specifications: Detailed specifications for the OCA series, including electric and hydraulic motor data, material options, and performance metrics.
Procedures: Selection involves determining heat load, entering temperature difference, and using performance curves to select the appropriate model.
Performance Curves: Provided for single and dual motor configurations, illustrating heat removal capacity relative to entering temperature difference.
Material Options: Options include Heresite coating, galvanized steel, and stainless steel for enhanced durability.
Advantages: OCA series offers leak-free design, low pressure drop, resistance to fouling, and high performance in salt conditions.
Manufacturing Process: T-BAR process involves cutting, stacking, fluxing, brazing, and welding for a robust core unit.
Key Data: Tables and diagrams provide essential data on dimensions, motor specifications, and performance metrics, including correction factors for pressure drop and viscosity.
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Catalog excerpts

OCA Series-1

FLUID COOLING | P-Bar Series Industrial AOL BRAZED ALUMiNUM CONSTRUCTiON HYDRAULiC OR COMPRESSOR OiL COOLiNG Features Large Oil Flow High performance industrial duty brazed aluminum bar and plate Core Compact all aluminum core assembly Ideal for converting water cooled equipment to air cooled Eliminates high water and sewer costs Eliminates corrosion problems associated with water cooled units Vertical air flow works well for heat recovery State-of-the-art heat transfer technology Hydraulic motors available Optional SAE Ports Marine corrosion control coatings available High performance air side fin design Detachable legs maximum Operating pressure Legs Steel with baked enamel finish Petroleum/mineral oils 250 psi (17 BAR) Shroud Steel Oil/water emulsion M®x ""TO Ce rating Temperature standard Core Brazed Aluminum Bar and Plate Water/ethylene glycol 300 F (150 C) ■ Tanks - 5052 Aluminum ■ Nose Bar & Little Bar - 3003-H Aluminum ■ Air Fin, Plate, Turbulator & End Plate -3003-O Aluminum Fan Aluminum Hub, Plastic Blades Motor TEFC Model Model Size Selected Specify Motor Required 0 - No Motor 2 - Single Phase 3 - Three Phase 6 - 575 Volt 9 - Hydraulic 18 - IEC Three Phase Noise Level Blank - Standard Noise Level LN - Low Noise Level

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OCA Series-2

Note: We reserve the right to make reasonable design changes without notice. Ail dimensions are in inches and (millimeters). Selection Procedure Performance Curves based on 100°F (55.56°C) E.T.D. or Entering Temperature Difference (E.T.D = Entering oil temperature minus ambient air temperature). SAE #10 oil @ 200°F (93.33°C). Oil pressure drop coding: X = 5 PSI (.345 BAR) • = 10 PSI (.689 BAR) ♦ = 15 PSI (1.03 BAR) ▲ = 20 PSI (1.38 BAR) ■ = 30 PSI (2.10 BAR) E.T.D. temperature correction formula: ENGLiSH Version 100 HP Curve = HP To Be Removed X Desired E.T.D METRiC Version KW Heatload (KW) °C Desired...

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OCA Series-3

Specifications Electric Motor & Fan Data Model Fan Motor Full Load CFM H.P. Voltage Phase Amps 230V Frequency Nema Thermal Sound (Hz) RPM Frame Overload dB(A) at 3 ft. Published electrical ratings are approximate, and may vary because of motor brand. Actual ratings are on motor nameplate. May also be operated at 50 hz. Consult factory for details. 50 Hz voltage: 190-200-208-220/380-400-415-440 (4) 50 Hz voltage: 190-208/380-415 All motors shown are TEFC—Other motor options available upon request. (1) Electric Motor Information (50 Hz IEC Frame) S dB(A) ound Voltage Phase All IEC frame motors...

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OCA Series-4

Note: Derate heat rejection values 15% if using 50Hz motors. Heat Rejection (KW/°C) Horsepower Removed in Cooler @ 100°F ETD Heat Rejection (KW/°C) Horsepower Removed in Cooler @ 100°F ETD Available in 60 Hz Nema Frame only.

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OCA Series-5

FLUID COOLING | P-Bar Series Industrial BOL brazed aluminum Construction Features Bar and Plate Brazed Aluminum Core Rugged, lightweight, and compact Provides the best heat transfer per given envelope size while minimizing pressure drop Air-side fin design minimizes fouling and static pressure ensuring longterm, reliable performance elded fittings/ports and manifolds W ensure structural integrity Standard SAE ports – NPT and BSPP ports available ustomized units are available to C meet your specific performance requirements -BAR core optional for high viscosity T oils or other highly fouling fluids....

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OCA Series-6

G 2 PLACES BOL 8 - 30 AIR FLOW BOL 400 -1600 AIR FLOW Approx. Wt. Ship Model A B C D E F G H J K L M N P (Kg) lbs BOL-4 See diagram above BOL-2000 See diagram above — — — — — — — — — — — (264.00) 582 Note: We reserve the right to make reasonable design changes without notice. All dimensions are in inches and (millimeters).

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OCA Series-7

Specifications Electric Motor Information (60 Hz Nema Frame) Load T Full hermal S ound Voltage Phase Amps 230V 230 Frame Overload — Electric Motor Information (50 Hz IEC Frame) S ound All IEC frame motors have CE mark. IEC motor voltages have +/- 10% tolerance. Hydraulic Motor Information Oil Flow Min. Pressure Motor IN 3 /REV Sound Required Required (CM 3 /REV) dB(A) Model GPM (LPM) PSI (BAR) Displacement at 3 ft. Oil Flow Min. Pressure Motor IN 3 /REV Sound Required Required (CM 3 /REV) dB(A) Model GPM (LPM) PSI (BAR) Displacement at 3 ft. Notes: Maximum Pressure is 2000 psi. Stated Minimum...

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OCA Series-8

Selection Procedure Step 1 Determine Heat Load. Typical Rule of Thumb, -size cooler for 1/3 of the input horsepower. Heat load may be expressed as either Horsepower or BTU/Hr or KW/°C. HP=BTU/HR ÷ 2545 Metric Version Corrected Heat Rejection Step 4 Select Model From Curves Enter the Performance Curves at the bottom with the GPM oil flow and proceed upward to the adjusted Heat Rejection from Step 3. Any Model or Curve on or above this point will meet these conditions. Step 2 Determine Entering Temperature Difference. Step 5 Calculate Oil Pressure Drop Find the oil pressure drop Entering oil –...

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OCA Series-9

Performance Curves BOL Models with Optional T-BAR Core -Bar Series BOL-T Performance Data Curve Op t ional T- Bar core sect ion cutaway Heat Rejection KW/°C Heat Rejection BTU/HR @ 100F ETD Note: Derate heat rejection values 15% if using 50Hz motors. Pressure Drop Oil Temperature Typical operating temperature ranges are: Hydraulic Motor Oil 120°F - 180°F (49°C - 82.2°C) Hydrostatic Drive Oil 160°F - 180°F (71°C - 82.2°C) Engine Lube Oil 180°F - 200°F (82.2°C - 93.3°C) Automatic Transmission Fluid 200°F - 300°F (93.3°C - 149°C) Correction Factor Desired Reservoir Temperature Oil Temperature: Oil...

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OCA Series-10

Performance Curves BOL Models with Low-Noise Option The low noise option offers the BOL models with a reduced motor speed. This allows a lower sound level output for noise-sensitive applications. Performance Data Curve Heat Rejection KW/°C Heat Rejection BTU/HR @ 100F ETD Available on 60 Hz Nema frame only. Sound Data Electric Motor Information Low Low Low Noise Noise Noise Model HP Frame RPM CFM CMM Voltage

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.