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Fluidcontrol
Oil/air cooler
BLK
Installation and Operation Instructions
Original instructions
BE350025
Bühler Technologies GmbH, Harkortstr. 29, 40880 Ratingen
06/2025
Tel. +49 (0) 21 02 / 49 89-0, Fax: +49 (0) 21 02 / 49 89-20
E-Mail: fluidcontrol@buehler-technologies.com
Internet: www.buehler-technologies.com
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Table of Contents
Related Manuals for Bühler technologies BLK Series
Summary of Contents for Bühler technologies BLK Series
- Page 1 Fluidcontrol Oil/air cooler Installation and Operation Instructions Original instructions BE350025 Bühler Technologies GmbH, Harkortstr. 29, 40880 Ratingen 06/2025 Tel. +49 (0) 21 02 / 49 89-0, Fax: +49 (0) 21 02 / 49 89-20 E-Mail: fluidcontrol@buehler-technologies.com Internet: www.buehler-technologies.com...
- Page 2 Bühler Technologies GmbH, Harkortstr. 29, 40880 Ratingen Tel. +49 (0) 21 02 / 49 89-0, Fax: +49 (0) 21 02 / 49 89-20 Internet: www.buehler-technologies.com E-Mail: fluidcontrol@buehler-technologies.com Read this instruction carefully prior to installation and/or use. Pay at- tention particularly to all advises and safety instructions to prevent in- juries.
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Page 3: Table Of Contents
Contents Introduction ............................................. 2 Intended use ......................................... 2 Model key.......................................... 2 Scope of delivery ........................................ 2 Safety instructions ......................................... 3 Important advice ......................................... 3 General hazard warnings .................................... 4 Transport and storage ........................................ 5 4 Installation and connection ...................................... 6 Requirements to the installation site................................ 6 Installing the unit........................................ 6 4.2.1 Installing swivel nuts in the fitting body ............................ 6... -
Page 4: Introduction
1 Introduction 1.1 Intended use BLK oil/air coolers are suited for the cooling of oils in hydraulic and lubrication systems. Their scope is given by their specifica- tions. The use in other applications is not permitted without confirmation by Bühler Technologies GmbH. 1.2 Model key BLK 4.6- IBx - T50 Number of motor contacts... -
Page 5: Safety Instructions
2 Safety instructions 2.1 Important advice The device may only be operated if: – the product is used under the conditions described in the operating and installation manual, in accordance with the type la- bel, and for the intended applications; Any unauthorised modifications to the device will void the warranty provided by Bühler Technologies GmbH, –... -
Page 6: General Hazard Warnings
2.2 General hazard warnings The device may only be installed by qualified specialist personnel who are familiar with the safety requirements and associated risks. In addition, through their professional training, they possess knowledge of the relevant standards and regulations. Be sure to observe the safety regulations relevant to the installation location and the generally accepted rules of technology. Prevent malfunctions and thereby avoid personal injury and damage to property. -
Page 7: Transport And Storage
3 Transport and storage Only transport the product inside the original packaging or a suitable alternative. Ensure secure fastening and mooring. Air coolers have M10 eye bolts at the top of the cooler housing for transport. Please note, due to the variety of versions the mounting bracket is not located at the exact centre of gravity and the cooler may swing when hoisted. -
Page 8: Installation And Connection
4 Installation and connection 4.1 Requirements to the installation site Aggregate The aggregate must be set up to allow for unobstructed air flow and adequate room for maintenance/repairs. When installed outdoors, be sure to consider the motor protection rating (standard: IP 55) and ensure adequate protection from the weather. Air cooler The cooler must be located in such a way that the air flowing through the matrix has free flow on entry and exit. -
Page 9: Hydraulic Connection
4.3 Hydraulic connection Carry out the hydraulic connection as described in the attached data. Connect the lines stress and vibration free, so typically us- ing hoses. Be sure to use suitable lines (with regard to pressure, fluid resistance, environmental influences, fire) when connecting to the hydraulic-, lubrication circuit. -
Page 10: Electrical Connections Blk 1-Phase
4.4.1 Electrical connections BLK 1-phase U1 blue Z brown U2 black PE green-yellow 4.4.2 Electrical connection temperature switch TSA The temperature switch TSA is installed in a cooling circuit with an oil/air cooler BLK as a typical application. Through reaching the switching temperature the fan-motor is switched-on and the oil will be cooled. - Page 11 Example wiring with temperature switch F1 Fuse K1 Relay F2 Fuse K2 Circuit breaker F3 Fuse S1 Protecting device H1 Mains switch S2 Protecting device Relay, circuit breaker and protecting devices are not part of the delivery. BE350025 ◦ 06/2025 Bühler Technologies GmbH...
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Page 12: Operation And Control
5 Operation and control WARNING Danger due to rotating fan Injuries to the hand may occur. Do not reach into the safety guard! NOTICE The device must not be started or operated outside the specifications! NOTICE Abrupt flow variation can lead to pressure peaks that may damage the cooler matrix. Make sure that the specifications are not exceeded in this case! 5.1 Before starting –... -
Page 13: Maintenance
6 Maintenance During maintenance, remember: – The equipment must be maintained by a professional familiar with the safety requirements and risks. – Only perform maintenance work described in these operating and installation instructions. – Observe the respective safety regulations and operating specifications when performing any type of maintenance. –... -
Page 14: Cleaning And Disassembly Of The Cooler Matrix
Condensate drain holes at motors from manufacturer WEG If the motor is used in surrounding with high humidity this could lead, depending on the ambient temperature, to formation of condensate inside the motor housing. Specially at longer nonoperation period. The motors of WEG have a condensate drain plug which can be used for draining off. -
Page 15: Cleaning The Cooler Matrix Inside
6.2 Cleaning the cooler matrix inside In the event of deposits in the cooling matrix due to inadequate filtration, you may try to remove these as follows after cleaning the outside: – Remove the cooler matrix as described in “Cooler matrix cleaning and disassembly”. –... -
Page 16: Service And Repair
7 Service and repair If an error occurs during operation, you will find troubleshooting and corrective information in this chapter. Repairs to the equipment may only be performed by Bühler authorised personnel. If you have any questions, please contact our service department: Tel.: +49-(0)2102-498955 or your local representative. -
Page 17: Disposal
8 Disposal The applicable national laws must be observed when disposing of the products. Disposal must not result in a danger to health and environment. The crossed out wheelie bin symbol on Bühler Technologies GmbH electrical and electronic products indicates special disposal notices within the European Union (EU). -
Page 18: Appendices
9 Appendices 9.1 Technical data Technical Data Materials / surface protection Cooling battery: Aluminium, painted ventilation box, safety guard and motor brackets: Steel, powder-coated Colour: RAL 7001 / Motor: RAL 7024/7030 Operating fluids: Mineral oils according to DIN 51524 Gear lubricant according to DIN 51517-3 Oil/water emulsions HFA and HFB according to CETOP RP 77 H Water glycol HFC according to CETOP RF 77 H Phosphoric ester HFD-R according to CETOP RP 77 H... -
Page 19: Basic Data (At 50 Hz Frequency)
9.1.1 Basic data (at 50 Hz frequency) Item no. Cooler type Motor power Weight Capacity Sound pressure Number of poles (kg) level Rated current at 400 V db(A)* 3501200 BLK 1.2 0,05 kW / 2 / 0,24 A (230 V) 3502200IE3 BLK 2.2 0,55 kW / 2 / 1,3 A... -
Page 20: Performance Curves Frame Size 5-7
9.1.3 Performance curves frame size 5-7 9.1.4 Performance curves frame size 8-10 Bühler Technologies GmbH BE350025 ◦ 06/2025... -
Page 21: Dimensions
9.2 Dimensions on some models the motors are mounted with a bracket on BLK 9 and 10 = 150 mm Connection fitting on BLK 9 and 10 only Model BLK 1.2 62,5 2x G1/2 BLK 2.2 83,5 2x G1 BLK 2.4 83,5 2x G1 BLK 3.2... -
Page 22: Functional Diagram
9.3 Functional diagram Standard version BLK 2 Standard version BLK 1, 3 to BLK 10 Direction of flow left to right or vice versa. Direction of flow BLK 3-10 top left to bottom right or the exact opposite. The oil outlet is always on the opposite side. The second connection must be closed. -
Page 23: Installation Torques And Clamping Range For Cable Fitting
9.4 Installation torques and clamping range for cable fitting Strain relief clamping Installation torque (Nm) Size range (mm) M12x1,5 M16x1,5 5-9,5 M20x1,5 8-13 M25x1,5 11-17 M32x1,5 15-21 M40x1,5 19-28 M50x1,5 27-35 M63x1,5 32-42 9.5 Screw torques Thread Torque (Nm) 9.6 Hose torques Connections/mounts Torque (Nm) Hose connections DN20... -
Page 24: Table Of Operational Viscosity For Vg Oil
9.7.2 Table of operational viscosity for VG oil 10 °C 20 °C 30 °C 40 °C 50 °C 60 °C 70 °C 80 °C 90 °C VG 46 264,45 131,96 73,58 46,00 29,13 20,04 14,43 10,78 8,32 VG 68 444,77 210,85 112,61 68,00... -
Page 25: Pressure Loss In Straight Pipes
9.8 Pressure loss in straight pipes Pressure loss (bar) per metre in straight tubing with laminar flow of mineral oil: BFP 8 8 l/min – DN 25 VG 46 VG 68 VG 120 VG 160 VG 220 VG 320 VG 460 VG 680 10 °C 0.03... -
Page 26: Attached Documents
10 Attached documents – Declaration of conformity KX350001 – RMA - Decontamination Statement Bühler Technologies GmbH BE350025 ◦ 06/2025... - Page 29 RMA-Formular und Erklärung über Dekontaminierung RMA-Form and explanation for decontamination RMA-Nr./ RMA-No. Die RMA-Nr. bekommen Sie von Ihrem Ansprechpartner im Vertrieb oder Service. Bei Rücksendung eines Altgeräts zur Entsorgung tragen Sie bitte in das Feld der RMA-Nr. "WEEE" ein./ You may obtain the RMA number from your sales or ser- vice representative.
- Page 30 Dekontaminierungserklärung DE000011 Bühler Technologies GmbH, Harkortstr. 29, D-40880 Ratingen 12/2022 Tel. +49 (0) 21 02 / 49 89-0, Fax: +49 (0) 21 02 / 49 89-20 E-Mail: service@buehler-technologies.com Internet: www.buehler-technologies.com...
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