Used Briquettes for sale (162)

Condition: new, Year of construction: 2025, Also, different models are available! IMPORTANT: MACHINE WILL BE BRAND NEW. SEE THE TECHNICAL DESCRIPTION BELOW 1. Briquette Diameter: Ø 200mm 2. Capacity: 12.000 kg/hour ( Steel) 3. Preliminary Compression Ram Thrust: 50 tons 4. Main Compression Cylinder Thrust: 850 tons 5. Maximum Working Pressure: 300 bars 6. Cycle Time: 10 - 12 sec 7. Electric Motor Power: 6x37=222 kW (Main Motors) 8. Machine Dimensions : 11.000mm x 10.000mm 9. Machine Weight: 60.000 kg 10. Screw drive feeders will fill the compression chamber automatically and a built-in vibrating hopper will provide safety to the chamber by preventing the oversize material from entering the chamber. 11. Cylinder Rods are induction-hardened and chrome plated. 12. A Hydraulic Oil cooling system is implemented. 13. Pumps and valves of hydraulic systems are PARKER or BOSCH-REXROTH brand. 14. The machine is fully automatic by PLC control. 15. All electrical and electronic parts are by SCHNEIDER or SIEMENS Brand. 16. The machine is CE certificated. The marking certifies that a product has met European Directives regarding consumer safety, health, or environmental requirements. Isdpfxjgv I N Us Aabotn 17. Machine will be under AYMAS Makina San. Ve Tic. A. Ş. Guarantee against manufacturing defects for one (1) year or two thousand five hundred (2.500) working hours.

Condition: new, Year of construction: 2025, We produce pellet-briquette line We are the only manufacturers in Lithuania, the only ones with our own service. We will deliver, install, set up and train the lines. We select a package according to your budget. We not only produce the equipment ourselves, but we also produce pellets ourselves, you can come and see the working equipment. Pellet production lines from 100 kg/h to 30 t/h We produce: Drum dryer Belt dryer pipe dryer Pellet plant Mills Itedpjhgbarofx Aabjn crushers Conveyor Coolers Cyclones Bunker Packing machines TSF-Justinas

Condition: new, Year of construction: 2024, New machine Year of construction: 2024 Equipment and technical data: Right-hand version Technical data: Overall dimensions: 1,900 x 1,410 mm Hopper opening: 1,044 x 1,044 mm Hopper height: 1,010 mm Hopper capacity: 1.1 m³ Drive power: 5.5 kW Briquette diameter: 50 mm Hydraulic oil: 160 l Throughput: up to 50 kg/h (depending on material) Paint finish: Weima Standard Connected load: 400 V +/- 5 % / 50 Hz including: Press mechanism with filling cylinder, main cylinder, gripper cylinder Connecting part for transport line Chrome-plated tongs Hydraulic tank 160 l with pump motor + valve control Safety switch for oil temperature Base plate 1,040 x 1,040 mm with agitator + motor and screw channel Screw channel Discharge screw + motor Side walls standard height 1,010 mm Base frame with rubber feet Switch cabinet on hopper and electrical control system Briquette length monitoring Automatic end position of all cylinders Manual control Automatic "On/Off" with level switch Material: Wood shavings, sawdust from solid wood, loose, clean and free of foreign matter*/ Dimensions: max. 12 mm Throughput capacity: approx. 50 m³/year/ * Specification foreign matter: Everything except wood, pieces of wood larger than 12 mm. Itjdet Hagnopfx Aabon The throughput capacity is highly dependent on the material. Average values are given. Depending on mixing ratio, moisture and material properties! Application not or not fully known/specified. Machine is sold appropriately and sold by the specialist dealer in accordance with the solution. In the event of heat build-up, the running time can be drastically reduced in accordance with the heating. Availability: short term Storage location: Solingen

Condition: new, Year of construction: 2023, RUF LIGNUM CLASSIC BRIQUETTING PRESS FOR WOOD THE ADVANTAGES FOR YOU AT A GLANCE: - Fully automatic 24h operation possible - Long service life - Low maintenance costs - Compact construction - Direct incorporation into existing production facilities possible Ijdpsnxkrbefx Aabetn - More than 35 years’ experience The RUF LIGNUM Classic wood briquette press is ideally suited to briquetting medium quantities of wood chips that are produced as a waste product of the wood processing industry. Thanks to the process of briquetting, additional revenue can be earned and storage and transport costs are cut. Another advantage can be found in the flexibility of our wood briquette presses. They can press various grain sizes of material into high-quality briquettes, completely without the use of binding agents. As a result, as a valuable source of energy, RUF briquettes actually have a higher utilisation value and an optimum CO2 balance. Our LIGNUM range also performs well in terms of having a high level of energy efficiency and a low level of wear and tear, thanks to our innovative RUF hydraulics. - Max. throughput rate (kg/h) Wood: 410 - Power (kW): 30 - spec. Pressure, max. (kg/cm²): 1700 - briquette formats (mm): 150x60 - Size (m) Lenght x Width x Hight: 2,1 x 1,9 x 2,0 - ca. weight (t): 3,3 t - with suction hoods - PACKAGING TABLE is GRATIS

Condition: as good as new (ex-display), Year of construction: 2024, Machine for sale at a special price Another machine, available immediately (ex works Neckartailfingen) * Including 1 year warranty. Your advantages: + Very robust, simple technology + Top price-performance ratio + Suitable for continuous operation + Long-standing, well-functioning / established machine Including control cabinet with timer operation Press is switched on manually and then runs until the time set on the timer (e.g. 4 hours) has elapsed. Then the press switches off. Technical data: Briquette dimensions: approx. 30 x 30 mm (square), Briquette length: 5-40 mm *depending on material Throughput capacity: up to a maximum of 20 kg/h. *depending on material Machine dimensions approx. 137 x 75 x 148 cm (length x width x height), Weight of the machine: approx. 250 kg, Capacity of the silo: approx. 250 liters, Motor: 2.2 kW, 400 V - 50 Hz, Noise emission: 62 dB, Raw material requirements: -Wood chips and dust smaller than 15 mm in length -Moisture content less than 18 % ATRO -Sand, stones, metals and minerals increase wear --- Options at extra charge: --Timer function + 490 € net Machine is started manually and switches off automatically after a set time X. -Level indicator for automatic operation + 1450 € net Iodpfx Aajd Nnwlsbotn Press starts and then stops automatically * NEW !!! Also available in 230 Volt, Motor then 3 kW instead of 2.2 kW, Surcharge + 890 € net (delivery time then approx. 8 weeks) - Special pressing units + 2.950 € net ---

Condition: like new (used), Year of construction: 2014, operating hours: 146 h, functionality: fully functional, Equipment: cooling unit, The press has only 146 working hours. Capacity up to 450 kg/h Square briquettes: L 150 x w 60 x H setable 40 - 110 mm Main motor 30kW Cooling system for hydraulic oil Packing table + sealing unit Itedpfx Aswzaxcjaben Feeding hopper.

Condition: new, Year of construction: 2025, Also, different models are available! IMPORTANT: MACHINE WILL BE BRAND NEW SEE THE TECHNICAL DESCRIPTION BELOW: 1. Briquette Diameter: Ø 120mm 2. Capacity: 1.800 – 2.200 kg/hour (Iron & Steel) 3. Preliminary Compression Ram Thrust: 15 tons 4. Main Compression Cylinder Thrust: 400 tons 5. Maximum Working Pressure: 300 bars 6. Cycle Time: 12 - 14 sec 7. Electric Motor Power: 75 kW 8. Machine Dimensions (Width x Length x Height): 3.200mm x 4.200mm x 3.500mm Itedpfx Asdfc Ikjabjn 9. Machine Weight: 13.000 kg 10. Screw drive feeders will fill the compression chamber automatically and a built-in vibrating hopper will provide safety to the chamber by preventing oversize material from entering the chamber. 11. Cylinder Rods are induction-hardened and chrome plated. 12. A Hydraulic Oil cooling system is implemented. 13. Pumps and valves of hydraulic systems are PARKER or BOSCH-REXROTH brand. 14. The machine is fully automatic by PLC control. 15. All electrical and electronic parts are by SCHNEIDER or SIEMENS Brand. 16. The machine is CE certificated. The marking certifies that a product has met European Directives regarding consumer safety, health, or environmental requirements. 17. Machine will be under AYMAS Makina San. Ve Tic. A. Ş. Guarantee against manufacturing defects for one (1) year or two thousand five hundred (2.500) working hours.

Condition: new, Year of construction: 2025, We produce pellet-briquette line We are the only manufacturers in Lithuania, the only ones with our own service. We will deliver, install, set up and train the lines. We select a package according to your budget. We not only produce the equipment ourselves, but we also produce pellets ourselves, you can come and see the working equipment. Pellet production lines from 100 kg/h to 30 t/h Isdpfjhga Srsx Aabstn We produce: Drum dryer Belt dryer pipe dryer Pellet plant Mills crushers Conveyor Coolers Cyclones Bunker Packing machines TSF-Justinas

Condition: good (used), Year of construction: 1999, Briquetting press type GP 120 Tandem Briquetting press for briquetting chips, wood chips and dust incl. automatic fill level indicator Itsdoupwx Hepfx Aaben - Briquette diameter: 60 mm - Pressing capacity: 40 - 120 kg/h * 2 = 80 - 240 kg/h (depending on material) - Hopper opening: approx. 1,900 x 1,900 mm - Hopper height: approx. 1,800 mm - Hopper capacity: approx. 6.0 m³ - Drive power: 7.5 kW, 400 V, 50 Hz - Switch cabinet: available on both sides - Operating hours: 13,725 h or 13,005 h - Hydraulic unit: approx. 300 litre tank for hydraulic oil - Weight: approx. 1,100 kg * 2 = 2,200 kg Used briquetting press in good condition W tong cylinder, tongs (RB 120 reinforced), tong connection flange renewed on one side (left in conveying direction) briquetting | briquette press | briquetting presses | briquette press | briquetting

Condition: excellent (used), Year of construction: 2016, functionality: fully functional, briquette diameter: 80 mm, overall weight: 7,650 kg, Manufacturer: AYMAS Model: BP 80T Year of manufacture: 2016 Isdpfew Awn Rsx Aabotn Weight: 7,650 kg Power: 30 kW Briquette diameter: 80 mm The BP series briquetting presses for steel and metal chips are machines designed for the production of briquettes from metals. Standard versions allow processing of materials such as aluminum chips, fine iron turnings from machining, or copper chips. The briquetting models for steel are specifically engineered to handle difficult materials, such as shredded steel cord from tire recycling. The special design enables continuous production and ensures high density and robustness of the briquettes.

Condition: reconditioned (used), Year of construction: 2023, All wear parts new only 704 operating hours Special price for a low-hour demonstration unit Base machine: €29,990 net Optional extras (for an additional charge): - Cooling unit: €3,995 net - Emulsion tray: €3,990 net The hydraulic briquetting presses of the MPP NEM series compact materials such as aluminum, copper, brass, bronze, graphite, and other non-ferrous metals into dimensionally stable cylindrical briquettes. These machines are distinguished by their robust construction, ensuring consistent briquette quality during continuous operation. The pressing process does not require any binding agents – compaction is achieved solely through hydraulic pressing force. Depending on material, the feedstock volume can be reduced by up to 90%. Throughput capacity: maximum 70 kg/h (depending on material) Briquette diameter: Ø 50 mm Itsdpjd N Dnhsfx Aabsn Motor: 5.5 kW 400 Volt / 50 Hz / 3-phase Pump: 40 liters Maximum briquette length: 50 mm Optimal briquette length: 40 mm Silo diameter: 1,000 mm Oil tank: 110 liters Dimensions: 1750 x 1130 x 1100 mm (L x W x H) Weight: 950 kg Hydraulic pre-compaction via slide Main press cylinder Vertical cylinder Fill level sensor: yes Feed material requirements: - Max. chip length: 15 mm - Installation room temperature: heated space, at least +5°C - Max. load on agitator: 150 kg - Feed material must be free from magnetic metals and mineral contaminants such as sand, stones, etc. Damage to pressing tools and/or increased wear may otherwise occur.

Year of construction: 2023, condition: new, Technical data briquetting press: Throughput capacity: 30-60 kg/h The briquetting capacity refers to a bulk density of the starting material of 200 kg/m³! Motor power: 5,5 kW Briquette Ø: 50 mm Iedpfx Aokuz Tueabotn weight: approx. 680 kg 1680 x 1100 x 1500 mm Equipment: - Automatic start/stop of the briquetting press via rotary vane probe - inspection cover - Transport pipe holder for briquetting press - Inspection window in the container Requirements for the raw material for briquetting: - Moisture content (atro) must be between minimum 6 to maximum 18 %. - Chip length maximum 15 mm - Installation temperature: tempered room at least +5°C - The customer must insure himself against hydraulic oil leakage - The feed must be free of metals and mineral impurities such as sand, stones, etc. Damage to the press tools and / or increased wear can be the result The screen from the crusher should not exceed a size of 10/12 mm.

Condition: ready for operation (used), Year of construction: 2015, Briquette Diameter: 40 mm Power: 4,1 kW Itedpfx Aajw Ewpgjbon Press Output per hour: 30 kg/h depended on material Hopper opening: 900 x 900mm Controlled by PLC Hydraulic tank: 50l Autom. ON/OFF with level alarm Oil temperature sensor Transport pipes Used machine in good condition

Condition: new, Year of construction: 2025, We produce pellet-briquette line We are the only manufacturers in Lithuania, the only ones with our own service. We will deliver, install, set up and train the lines. We select a package according to your budget. We not only produce the equipment ourselves, but we also produce pellets ourselves, you can come and see the working equipment. Pellet production lines from 100 kg/h to 30 t/h We produce: Drum dryer Belt dryer Ijdsghmptspfx Aabjtn pipe dryer Pellet plant Mills crushers Conveyor Coolers Cyclones Bunker Packing machines TSF-Justinas

Condition: refurbished (used), Year of construction: 2025, I sell the heavy duty briquetting press RUF RB440. Year 11/2002, Fully reconditioned with warranty 2025 Isdpfx Ajwun I Esabetn Motor power 30kW Productivity Amount 440 pcs. wood briquettes / hr. Wood briquette RUF 150 x 60 x 40-110mm (depends on material) Material humidity up to 15% Nominal pressing power 14200 N/cm2 Oil cooler included. Dimensions 3000 x 1800 x 2000 mm Total power 3000kg Composition right - right side input Condition after full recondition / 500 working hours warranty like new. Available immediately. Including full documentation and CE.

Condition: excellent (used), Year of construction: 2019, functionality: fully functional, machine/vehicle number: 19072038, BSW-722-ST0_Mod packaging machine designed for packaging wood briquettes. The unit formats a bundle of 12 cubes (2 layers of 6 cubes flat). The automatic feeder inserts a leaflet onto the bundle of briquettes. The bundle is then transported through a film curtain and wrapped with film. Finally, the bundle is transported through a heat-shrink tunnel. Technical parameters: Year of construction: 2019 Iedpewh S Hxefx Aabjtn Installed power: 21 kW Maximum product height: 240 mm Welding rod length: 800 mm Foil roll dimensions: 780 x 350 mm Machine dimensions (length x width x height): 3.9 x 2.4 x 2.5 m Dimension requirements for briquettes: Type A: cube weight: approx. 0.83 kg, package contains 12 cubes Type B: cube weight: approx. 1.0 kg, package contains 10 cubes Video showing the machine in operation: on request The price of a new machine is approx. EUR 75,000.

Condition: good (used), Technical Data: Briquetting press in good condition Iodpjwtdk Tefx Aabetn Technically inspected in 06 / 2025 Cylindrical briquette 80 mm Throughput up to a maximum of 150 kg/h *only approx. 3,949 operating hours - Hydraulic press: Briquetting press with discharge chute - Hydraulic unit: 4 kW - Pressure: max 300 bar - Transport dimensions: 1585/2140/H1940 mm - Weight: 1370 kg Functionality guaranteed upon handover We are happy to offer a free test run!

Condition: used, No. 3231 Extraction unit with briquetting press Spänex SHB 50 Used Complete disposal system for waste materials made of wood, paper, plastic, cotton, etc. The sawdust enters the chip bunker of the hydraulic briquetting press directly after the filter system. After compression, the briquettes are transported directly to the heating system. Technical data according to manufacturer's brochure: Capacity 50 kg/h (depending on material) Throughput 0.45 m3/h Briquette shape 8-cornered, 125 x 70 mm Motor power 5.5 kW Compaction 1:10 Moisture min. 8%, max. 20% Sale on behalf of customer, ex location near 69124 Heidelberg, without dismantling, without transportation and assembly Dismantling, loading and transportation by us optionally possible Errors in description and price reserved To avoid possible misunderstandings, an on-site inspection is possible and recommended by appointment Itsdpfx Aajwqhwlsben Sold as is Technical information, description of condition, year of construction and scope of delivery according to manufacturer's brochure or previous owner, without guarantee Subject to prior sale Any warranty is excluded for used machines, the following applies: “purchased as viewed” Pictures and videos serve as examples and do not represent the actual scope of delivery Terms of payment: Prices excl. VAT, payment before collection or dispatch Terms of delivery: ex location

Condition: as good as new (ex-display), Year of construction: 2025, Briquette Diameter: 40 mm Ijdpfx Aaovptrtjbotn Power: 4,1 kW Press Output per hour: 30 kg/h depended on material Hopper opening: 900 x 900mm Controlled by PLC Hydraulic tank: 50l New exhibition machine with 5 operating hours

Condition: new, Year of construction: 2025, functionality: fully functional, machine/vehicle number: HaRo2020, total width: 800 mm, total height: 1,100 mm, total length: 1,200 mm, briquette diameter: 60 mm, overall weight: 300 kg, warranty duration: 12 months, type of input current: AC, input voltage: 400 V, power: 3 kW (4.08 HP), Equipment: emergency stop, Our new HaRo2020 briquetting press, with a capacity of up to 40 kg/h, automatic tongs, and pre-compactor, is manufactured by ourselves. You can only purchase this machine directly from us, as we do not use intermediaries. The briquetting presses are CE-compliant and manufactured according to the latest standards. Since we produce most of the components in-house, we can offer the machine at a particularly competitive price. Price is exclusive of VAT. The new hydraulic unit is equipped with a SILENCE-PUMP, making the machine extremely quiet in operation. Another benefit of the helical gearing in the pump is increased durability. Isdew A Hvdopfx Aabotn Everything is made in Germany! You are welcome to visit us and test the machine with your own material. When purchasing our briquetting press, you will receive a detailed and comprehensive German (PDF) operating manual for this machine. The input material must have a moisture content below 15%—ideally 10 to 12%—for sawdust and planer shavings. Technical Data – Hydraulic unit: 3.0 kW (connected load) – Power consumption per hour: approx. 1.8–2.0 kWh – Throughput: approx. 15–40 kg/h – Voltage: 400 V – Frequency: 50 Hz – Circuit protection: 16 A plug – Power cable length: 3 m – Hydraulic control with Bosch Rexroth valves – Briquette diameter: 60 mm (length varies according to material) – Motor equipped with motor protection switch and emergency stop—for operator and machine safety, including motor protection – No electronic components prone to failure such as controllers, sensors, or complicated electronics – Pressing without additives – Counter-pressure adapts fully automatically to your material – Thanks to the pre-compactor, bulky shavings are no problem – No adjustments or monitoring of the pressure required – Fully automatic operation Spare parts supply is guaranteed, as we manufacture the machines in small series in our facility in Germany. The large oil tank ensures that the oil will not overheat during continuous operation. Machine dimensions: Length: 1.25 m Width: 0.82 m Height: 1.11 m Feed hopper: Diameter approx. 80 cm x height 60 cm Weight: 300 kg The briquetting press is immediately operational and does not require installation—just plug it in and start working. The machine can be viewed and tested on-site. You are welcome to send us a sample of your material for testing; we find this is the most effective method.

Condition: refurbished (used), Year of construction: 2024, I sell the heavy duty briquetting press RUF RB440. Year 10/2014 Motor power 40kW Productivity Amount 600 pcs. wood briquettes / hr. Wood briquette RUF 150 x 60 x 40-110mm (depends on material) Material humidity up to 15% Nominal pressing power 14200 N/cm2 Oil cooler included. Dimensions 3800 x 1800 x 2000 mm Iodpfx Aaovld A Ijbjtn Total power 4000kg Composition right - right side input Condition after full recondition / 500 working hours warranty like new. Available immediately. Including full documentation and CE.

Condition: new, Year of construction: 2024, Good, used demonstration machine Availability upon request Very robust machine with high pressing force - also suitable for producing briquettes of saleable quality *depending on the material. The large pressing cylinder and the 70 mm briquette make this possible. Our best-selling briquetting press series + Proven, simple technology for extremely low susceptibility to errors + 25 years of experience, continuous development, and know-how + Several thousand machines in use with satisfied customers + Top price-performance ratio Supplement for demonstration cooling unit + €4,980 net, (can also be retrofitted later) * Cools the pressing tongs (important for use after 4 hours) and the hydraulic oil Itjdpfxod Nm Sij Aaben * Cooling unit recommended for regular use of more than 4 hours at a time. Tariff number: 84793010, Briquette diameter: 70 mm, Front bushing: 125 mm, Max. briquette stroke: 100 mm, Optional briquette stroke: 80 mm, Capacity (depending on material): up to 150 kg/h* *depending on bulk density, *based on a bulk density of 200 kg per cubic meter. . Motor power: 9.2 kW, 400 volts / 50 Hz / 3-phase, Length: 2095 mm, Width: 1300 mm, * with large chamber 1600 mm Height: 1700 mm, Weight: 1250 kg, Oil capacity: 220 liters, Silo diameter: 1200 mm Silo capacity: approx. 1 cubic meter Pump: 75 liters Hydraulic pre-compressor Cooling option for pressing tongs: yes, with optional coolable pressing tongs Cooling option for hydraulic oil: yes Cooling of the pressing tongs and hydraulic oil with a cooling unit (optional accessory) Level monitoring option: yes Extruded briquette option; Yes (depending on material) Optional enlarged feed slide: Yes, with special accessory enlarged feed slide CE compliant Raw material requirements: - The moisture content (dry) must be between a minimum of 6% and a maximum of 18% - Maximum chip length: 20 mm - Installation temperature: Temperature-controlled room at a minimum of +5°C - The feed must be free of metals and mineral contaminants such as sand, stones, etc. This may result in damage to the press tools and/or increased wear.

Condition: refurbished (used), Year of construction: 2024, I sell the heavy duty briquetting press RUF RB440. Year 11/2002 Motor power 30kW Productivity Amount 440 pcs. wood briquettes / hr. Wood briquette RUF 150 x 60 x 40-110mm (depends on material) Material humidity up to 15% Nominal pressing power 14200 N/cm2 Oil cooler included. Dimensions 3000 x 1800 x 2000 mm Total power 3000kg Iodpfjmk Hwnsx Aabetn Composition right - right side input Condition after full recondition / 500 working hours warranty like new. Available immediately. Including full documentation and CE.

Condition: new, Year of construction: 2025, Production time appr. 4 months Our best-selling briquetting press series + Tried and tested, simple technology for extremely low susceptibility to errors + 25 years of experience, further development and know-how + Several hundred machines in use with satisfied customers + Good price performance ratio Throughput approx. Up to 200 kg per hour * strongly dependent on the material. Itodpechqxxefx Aaben - in the last test with aluminum granules smaller than 5 mm - approx. 186 kg per hour + the pressed emulsion. - in the last test with aluminum chips smaller than 18 mm - approx. 120 kg per hour + the pressed emulsion. Technical specifications: Motor: 7.5 KW + 0,55 kW Cooler 400 volts / 50 Hz / 3-phase, Front bush: 125 mm, Briquette stroke max .: 100 mm, Briquette stroke opt .: 80 mm, Pump: 80 liters, Storage container approx. 0.5 qbm content (expandable), Diameter: 1200 mm, with agitator discharge, Hydraulic unit complete with oil tank 220 liters Dimensions approx. 2095 x 1600 x 1310 mm lxwxh, Weight 1370 kg, Automatic on-off switching via level indicator CE compliant. . Requirements for the raw material: - Chip length maximum 20 mm - Installation temperature: temperature-controlled room at at least + 5 ° C - The loading must be free of magnetic metals and mineral impurities such as sand, stones, etc. This can result in damage to the pressing tools and / or increased wear

Condition: new, Year of construction: 2025, Briquetting press with PLC and automatic briquette length control Throughput: up to 60 kg/h Briquette: 50 mm cylindrical Motor: 5.5 kW Iodpfsv Rpxlox Aabstn Dimensions: 1,900 x 1,350 x 1,410 mm Weight: approx. 860 kg Requirements: Feed material ideally less than 25 mm chip length Moisture content 6-12% dry matter Machine suitable for discontinuous operation. For example, briquette for up to 2 hours; 1 hour break, etc. If the machine is to produce continuously for longer than 2 hours, an optional cooling system must be connected.