BOL Series
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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

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

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

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...

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...

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

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

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.