BOL Series
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Catalog excerpts

BOL Series - 1

Fluid Cooling P-BAR ▪ Industrial BOL Series BRAZED ALUMINUM CONSTRUCTION Performance Notes ▪ Bar and plate brazed aluminum core ▪ 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 ▪ Welded fittings/ports and manifolds ensure structural integrity ▪ Standard SAE ports – NPT & BSPP available Options Low noise T-BAR core Serviceable internal pressure and temperature bypass ▪ Customized units are available to meet your OE specific performance requirements ▪ T-BAR core optional for high viscosity oils or other highly fouling fluids. (See T-BAR Performance Curve) Internal Bypass Options Mounting Feet Steel ▪ Optional internal termperature controlled bypass (T-BAR) Standard Core Brazed aluminum bar and plate Ⅲ Tanks – 5052 Aluminum Ⅲ Nose Bar & Little Bar – 3003-H Aluminum Ⅲ Air Fin, Plate, Turbulator & End Plate – 3003-O Aluminum Fanguard Steel Ratings Maximum Operating Pressure 250 PSI (17 BAR) Maximum Operating Temperature 300°F (150°C) Pressure Bypass Connectors Aluminum Fan Aluminum Hub, Plastic Blades Shroud Steel Fluid Compatability Petroleum/mineral oils Oil/water emulsion Water/ethylene glycol Temperature Controlled Bypass with Integrated Pressure Relief How to Order – Model Series BOL BOLR - Internal pressure bypass included – Connection Type* 1 - NPT 2 - SAE 3 - BSPP – Bypass* Blank - No Bypass Pressure bypass only (P-BAR and T-BAR) 25 - 25 PSI 60 - 60 PSI Thermal/pressure relief bypass (T-BAR only) 29 - 29 PSI 87 - 87 PSI 130 - 130 PSI – Specify Motor Required 2 - Single Phase 3 - Three Phase 6 - 575V Three Phase 9 - Hydraulic 18 - IEC Three Phase C - Core Only 0 - No Motor – Core Blank - Standard P-BAR TB - T-BAR Core** Noise Level Blank - Standard Noise Level LN - Low Noise Level*** *BOL-4 is not offered with bypass. This is a partial flow pressure bypass only. It is not designed to be a full flow system bypass. ** T- BAR core option provides a T-BAR core in a BOL frame. Used for high fouling or high viscosity fluids. Performance is typically 15-25% less than the P-BAR Core. Consult Factory for details. ***Available in models 8-2000 only, the low noise option is done by lowering the fan speed. As a result, the performance will be reduced by approximately one model size. apiheattransfer.com thermaltransfer.com

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BOL Series - 2

G 2 PLACES BOL 8 - 30 AIR FLOW BOL 400 -1600 AIR FLOW Approx. Shipping Weight LBS (KG) 18 (8.16) Note: We reserve the right to make reasonable design changes without notice. All dimensions are in inches (millimeters) unless noted otherwise. apiheattransfer.com thermaltransfer.com

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BOL Series - 3

Dimensions with Internal Pressure Bypass BOLR-8 – BOLR-1600 #16 SAE SERVICEABLE BYPASS 25/60 PSI ASSEMBLY OPTIONAL & REVERSIBLE #16 SAE SERVICEABLE BYPASS 25/60 PSI ASSEMBLY OPTIONAL & REVERSIBLE Approx. Ship Weight LBS (KG) Thermal/Pressure Relief Bypass is different height than pressure only bypass. Consult factory for details. Note: We reserve the right to make reasonable design changes without notice. All dimensions are in inches (millimeters) unless noted otherwise. apiheattransfer.com thermaltransfer.com

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BOL Series - 4

Specifications Electric Motor Information (60 HZ Nema Frame) Model Full Load Amps 230V Thermal Overload *BOL-4 is a custom 50/60 HZ motor. It is not NEMA or IEC. Additional 2 µF capacitor required (between black and brown wires). Not supplied with motor. Electric Motor Information (50 HZ IEC Frame) Voltage *BOL-4 is a custom 50/60 HZ motor. It is not NEMA or IEC. All IEC frame motors have CE mark. IEC motor voltages have +/- 5% tolerance. Hydraulic Motor Information Model Notes: Maximum Pressure is 2000 PSI. Stated Minimum Operating Pressure is at Inlet Port of Motor. 1000 PSI Allowable Back...

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BOL Series - 5

Selection Procedure STEP 1 Determine Heat Load. Typical application, size cooler for 1/3 of the input horsepower. Heat load may be expressed as either Horsepower or BTU/HR or KW/°C. KW = HP x .745 STEP 2 Determine Entering Temperature Difference. Entering air temperature is the highest Ambient Air temperature the application will see. STEP 3 Determine the Corrected Heat Dissipation to use the Curves Oil Temperature: Oil coolers can be selected using entering or leaving oil temperatures. Off-Line Recirculation Cooling Loop: Desired reservoir temperature is the oil temperature entering the...

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BOL Series - 6

Performance Curves BOL Models with Standard P-BAR Core 1,000,000 Heat Rejection KW/°C °C = ETD Heat Rejection BTU/HR @ 100°F ETD Note: Derate heat rejection values 15% if using 50 HZ motors. apiheattransfer.com thermaltransfer.com

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BOL Series - 7

Performance Curves BOL Models with Optional T-BAR Core 1,000,000 Heat Rejection BTU/HR @ 100°F ETD Oil Flow GPM (LPM) Note: Derate heat rejection values 15% if using 50 HZ motors. apiheattransfer.com thermaltransfer.com Heat Rejection KW/°C °C = ETD

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BOL Series - 8

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. 5.3 Heat Rejection KW/°C °C = ETD Heat Rejection BTU/HR @ 100°F ETD Available on 60 HZ Nema frame only. Electric Motor Information Model Sound Data apiheattransfer.com thermaltransfer.com Low noise ratings are lab tested in a 1/4 spherical pattern. Additional nearby objects can increase the sound level.

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