Used Al-Ko Therm Extraction System for sale (48,413)

Condition: ready for operation (used), Year of construction: 1999, functionality: fully functional, input voltage: 400 V, input current: 21 A, type of input current: DC, volume flow: 6,045 m³/h, overall weight: 1,100 kg, ALKO ECO JET 60/5 HD EXTRACTION UNIT Sawdust extraction, dust extraction, self-cleaning negative pressure filter, ALKO ECO JET The filter is pneumatically cleaned with compressed air pulses during operation, ensuring high device efficiency. Lrsdpsyrqnzofx Aa Ror Ideally suited for all types of dry dust in various technological processes. The filter bags can be exchanged according to requirements and intended use.

Condition: good (used), Year of construction: 1994, functionality: fully functional, For sale is a mobile dust extraction unit from AL-KO, suitable for extracting wood chips and dust from woodworking machines. Technical data / Features: Manufacturer: AL-KO Model: AL-KO 100 Filter module 1 Year of manufacture: 1990 Airflow rate: approx. 2,200 m³/h Motor power: 1.5 kW Connection: 380 volts Mobile dust extraction unit Filter bag Chip collection bag Chassis with wheels Motor protection switch with on/off button Extraction nozzle Lredpfx Aajzv Thqo Rsr Compact and robust design Condition and scope of delivery as shown in the photos The unit is suitable as a compact, individual dust extraction system for various woodworking machines. Inspection and demonstration are possible by appointment. Transport is possible for an additional charge! The machine will be inspected before sale. For used machines manufactured in 2009 or earlier, the warranty is excluded when sold to commercial customers. Technical data and features may vary. Errors, prior sales and changes are subject to change. All information is without guarantee.

Condition: used, Year of construction: 1998, machine/vehicle number: 980919, functionality: fully functional, power: 5.5 kW (7.48 HP), input voltage: 400 V, input frequency: 50 Hz, volume flow: 3,450 m³/h, intake vacuum (max.): 3,550 mbar, suction capacity: 3,450 m³/h, intake manifold diameter: 250 mm, filter area: 23 m², total height: 2,959 mm, total length: 2,500 mm, total width: 1,238 mm, overall weight: 750 kg, Used clean air system for two to three woodworking machines operating simultaneously. Suitable for outdoor installation. Lrsdpfozukulsx Aa Ror New filters are included. The control system is equipped with a speed control function via a frequency inverter.

Condition: used, Year of construction: 2023, Used system Year of manufacture: 2023 Condition: As new, only a few operating hours Equipment and technical data: Stationary clean-air filter system ECO JET DUO 6 XL ZRS for extracting wood dust and chips Fans: 2 × 7.5 kWAir volume: 10,000 m³/hNegative pressure: 2,700 Pa (total) / 2,200 Pa (static)80 filters à 2.50 m, BIA Category M, electrically conductive, incl. support cagesFilter area: 77.6 m²Filter surface loading: 129 m³/(m² × h)Filter cleaning: AL-KO OPTI-JET®Pressure relief area: 0.84 m² (bursting discs)Base frame with discharge hopper and rotary valve; dry discharge with C-coupling ECO JET DUO 6 ZWR XL, 1,100 mm intermediate section for increasing unit height with 2 suction openings Base frame with discharge hopper and ZRS 960/1 FG rotary valve for chip disposal via on-site transport fan into an existing silo or similar; DN 200 transport pipe, approx. 1,260 mm, connection on site ZRS 960/1 FG Rotary valve: ATEX Directive 94/9/EC; CE 0588 Ex II 1D/- (indoor/outdoor); EX D; FSA 11 ATEX 1614XMotor: 0.18 kW / 0.78 A, 3 Ph / 400 V / 50 HzProtection class: IP 54 / B3; Insulation class FSpeed: 41 rpm; Capacity: 15,744 l/h*; 7 cellsInlet/outlet: 960 × 250 / 960 × 208 mmDimensions: 1,100 × 605 × 330 mm; Temperature range: up to 50 °C Further equipment: 400 mm suction connection with non-return flap in rectangular ductECO JET backflow flap 910 × 346 × 500 mm AL-KO Control System ACS II: Touchscreen display, ST 1200 controller, Sitop Power power supply, 24 V control voltage and integrated frequency inverter for cascade control of 2 fans up to 37 kW Plain-text fault display with common fault lamp; manual discharge start via display button; manual cleaning start via push button; cleaning via differential pressure; post-cleaning; external start via potential-free contact; operating hours counter; maintenance interval display; control cabinet lighting and ventilation; monitoring of fire damper, residual dust sensor, level sensor and max. filter pressure 10 individually controlled solenoid valves 4-group slide control for up to 8 machines: control via potential-free contact (PFK) or induction coil; 24 V DC motorised or electro-pneumatic slide gates; max. 4 panels per conveying line Power section ZRS up to 0.18 kW; time settings adjustable via touchscreen Bursting disc sensor and evaluation unit; pressure transmitter for inverter; pressure switches; warning beacon; 2 × PTC monitoring; rotary valve speed monitoring Exhaust/return air changeover 24 V DC for summer/winter operation Filter monitor/residual dust monitoring with evaluation unit according to DIN EN 12779 and H3: if 0.3 mg/m³ is exceeded, a self-latching alarm is triggered and the recirculation air damper automatically switches to exhaust air 10-way terminal box 24 V/230 V, fully wired for filter cleaning, incl. approx. 6 m cable Pipe system incl. bends, branches, reducers, PU hoses, machine connections, small parts and EP slide gates for extraction of 11 woodworking machines + 1 HRS according to specification Return air according to TRGS 553 with changeover damper and fire damper Galvanised base frame for container loading Lodezlbqrjpfx Aa Rsrr Paddle switch 24 V–230 V with socket for level indication in the discharge hopper Dimensions: 2,092 × 2,000 × 5,292 mm Inspection possible in assembled condition in 06667 Weißenfels. Price incl. dismantling. Availability: Short notice Location: ...

Condition: reconditioned (used), Year of construction: 1994, machine/vehicle number: 941108, functionality: fully functional, total height: 2,520 mm, total length: 2,580 mm, total width: 1,000 mm, Compact dust extraction system with 3 chip collection bags – WITHOUT fan Nominal air flow rate: 5000 m³/h with existing fan – up to 7500 m³/h possible Filter area: 37.5 m² Filtration technology: AL-KO Opti-Jet system consisting of compressed air cleaning (sequence-controlled) and surface filtration Chip collection capacity: 8 solenoid valves Suction nozzle: DN 355 mm Compressed air connection: 1", compressed air, water and oil-free Minimum compressed air consumption 8.5 bar: 1140 NL/cleaning cycle Operating pressure: maximum 8.5 bar Fire extinguisher connection: 1 x 1 1/2" Dimensions WxD approx: 2572 x 981 mm Height approx: 2520 mm Weight without filter approx: 457 kg JET cleaning: A pressure surge on the inside of the filter achieves effective cleaning of the filter hoses on the outside. Easy maintenance: large access doors facilitate filter maintenance, additional inspection covers High-quality filter material: oil and water-repellent surface coating of the filter, for problematic dusts (paint sanding dust, wet dust), filter washable Uniform bag filling: infinitely adjustable distribution flaps enable uniform bag filling Suitable fan: see item no. 7458 D=250 mm - 5000 m³/h extraction capacity Lsdpfxjzqan Ho Aa Rorr With a fan D=350 mm, up to 7500 m³/h extraction capacity is possible!!!

Year of construction: 2005, condition: used, Extraction system for removing dust from the ambient air. The motor drives a fan impeller, creating negative pressure. The air is sucked into the machine via the intake manifold and reaches the filter elements. The treated air is then blown out again. Additional title: Workshop dust extraction Nominal flow rate: 1400 m³/h minimum flow rate: 1,108 m³/h Power: 2.2 kW Current: 5 A Voltage: 400 V Frequency: 50 Hz Ljdpfx Aaezgczhs Rorr Base construction: on a mobile frame Features: 140 mm intake manifold; air filter (category C el. lt.); asynchronous motor (manufacturer EMGR)

Condition: excellent (used), Paint mist extraction unit, ALKO spray wall Increased flexibility thanks to extraction technology with a frontal plate system Motor data: 0.75 / 2.1 kW ex/ 400 V / 50 Hz Speed: 950 / 1,420 rpm Airflow: 3,000 / 6,800 m3/h Dimensions (W/H/D): 1,912 x 1,405 x 943 mm with side panels extended: 2,971 x 1,405 x 1,215 mm Filter surface: 2 m2 Weight: 248 kg Condition: very good Lodpfxoy Dpfws Aa Rjrr

Condition: used, Year of construction: 2001, functionality: fully functional, type of input current: three-phase, suction capacity: 6,000 m³/h, intake manifold diameter: 300 mm, filter area: 31 m², Dust extraction unit, chip extractor, self-cleaning filter, vacuum, pneumatic ALKO MOBIL JET 300 The filter is pneumatically cleaned by compressed air pulses during operation, ensuring high device efficiency. The fan is positioned on the clean air side, minimizing explosion risk. Lsdsy Rz T Hspfx Aa Rorr The unit is additionally equipped with a fire protection system. Perfectly suited for wide belt sanders and all types of dry dust in various technological processes – filtration bags can be replaced to suit specific requirements and applications. Fan power: 7.5 kW Capacity: 6000 m3/h Vacuum: 2400 Pa Nozzle diameter: 300 mm Air return Automation for direct start from machines. Stock no.: 1131

Condition: new, With air flow rates of up to 22,000 m³/h, the stationary compact filter systems of the ECO JET series offer a wide range of applications. They are the ideal extraction solution for machines in various manufacturing sectors and industries, including larger processing machines. Eligible for BAFA funding according to Module 4. ECO JET series systems are equipped with fans arranged on the clean air side, which draw the dust- and chip-laden air towards the filter unit. In the most powerful DUO models, two fans are connected in parallel. A flange at the filter unit inlet enables the connection of custom duct diameters. The aerodynamically optimized airflow in the separation chamber allows coarse particles to be separated directly, without reaching the filter bags. Residual dust collected by the filters is automatically cleaned by the AL-KO OPTI JET® filter cleaning system, with the separated material discharged into mobile collection containers located beneath the filter. Applications: - Extraction from production machines, machining centers, and ductwork systems with multiple suction points - Direct extraction for continuous operation - In sectors such as wood processing, joineries, carpentry workshops, furniture manufacturing, plastics manufacturing and processing, paper production, orthopedic industry, and many more Lrodpswwtuijfx Aa Rsr Advantages: - Wide selection of standard extraction systems with numerous customer-specific customization and options - Consistently high suction performance thanks to integrated pre-separator and AL-KO OPTI JET filter cleaning system - Heating cost savings, as 100% recirculation operation is possible in many cases - Small footprint due to compact design - Suitable for indoor and outdoor installation - Available in ATEX-compliant versions - Extensive range of accessories and numerous options for individual device configuration - Eligible for BAFA funding according to Module 4

Condition: used, Year of construction: 1996, Suction nozzle diameter: 160 mm Maximum volumetric flow rate: 1770 m³/h Rated volumetric flow rate: 1448 m³/h Airflow monitoring: differential pressure indicator Vacuum: 1570 Pa Filter area: 10.5 m² Residual dust content: less than 0.2 mg/m³ Sound pressure level: Chip sack volume: Ledjyffx Ijpfx Aa Rsrr Filter cleaning: pneumatic, jet cleaning Motor power: 2.2 kW Machine length: 1600 mm Machine width: 700 mm Machine height: 2200 mm Weight:

Condition: used, Year of construction: 2018, functionality: fully functional, Complete Orbital Welding System: OWC Plus Controller + Inverter T 180 + CWH 53 Weld Head Description: For sale is a high-quality, complete orbital welding system from Orbitalservice GmbH. The package includes the control unit, power source, cooling system, and a closed weld head with accessories. Ideal for precise tube welding applications. German-made quality. Components included in the package: 1. Controller & Inverter: - OWC Plus Orbital Welding Controller: Modern control unit (weight: 2.5 kg). - Inverter T 180 Basic Plus - DC: Powerful power source (3 A - 180 A), weight: 12.2 kg. - Mains cable: Connection between power source and controller (80 cm). 2. Cooling: - Water cooling unit WUK 7 Plus: 230 V version, includes two self-sealing couplings (weight: 16.2 kg). 3. Welding head & accessories: - Closed weld head CWH 53: For tube outside diameters (OD) from 6 mm to 53 mm. Includes drive unit and 8 m hose package. Lrodpfx Ajyg R Svea Rer - Collet set: Spring-loaded set for CWH 53 (OD 19.0 mm), consists of 4 half-shells made from high-strength aluminium. 4. Other accessories: - Remote cable control RC Plus+: 8 m cable length, suitable for AVC-OSC. - Argon pressure regulator: 3-way, chrome-plated brass. - Gas hose: 3 m, for OWC Plus control unit. Technical details: Manufacturer: Orbitalservice GmbH / Made in Germany. Original list price: approx. €15,900 (before discounts as per quotation). Condition: [Please insert current condition here; e.g.: "The system is from 2018, has seen little use and is fully functional."] Price: €6,500 plus VAT Location: PL 2 units available. Scope of delivery: Complete system as described above. More pictures available on request. Can be picked up in Poland or shipped via forwarding agent.

Condition: used, Year of construction: 1996, Suction nozzle diameter: 160 mm Maximum volumetric flow rate: 1770 m³/h Rated volumetric flow rate: 1448 m³/h Airflow monitoring: differential pressure indicator Vacuum: 1570 Pa Filter area: 10.5 m² Residual dust content: less than 0.2 mg/m³ Sound pressure level: Chip sack volume: Filter cleaning: pneumatic, jet cleaning Lredsx Edmpjpfx Aa Rjr Motor power: 2.2 kW Machine length: 1600 mm Machine width: 700 mm Machine height: 2200 mm Weight:

Condition: used, functionality: fully functional, Alsident System Extraction Arms. The extraction arm of the Alsident System brand is designed to keep the breathing atmosphere clean during work. This extraction arm is suitable for both ceiling mounting and for the wall of a work table. Good working condition. Please check out our other listings as well. Lsdpfxeupv U He Aa Rjrr

Condition: used, Year of construction: 2006, functionality: fully functional, input voltage: 400 V, input frequency: 50 Hz, type of input current: three-phase, intake vacuum (max.): 2,400 mbar, suction capacity: 6,000 m³/h, intake manifold diameter: 300 mm, filter area: 30 m², total height: 2,350 mm, total length: 3,000 mm, total width: 1,100 mm, overall weight: 900 kg, Dust extractor, chip extractor, self-cleaning pneumatic vacuum filter Alko Mobil Power JET 300 The filter is pneumatically cleaned with compressed air pulses during operation, ensuring high device efficiency. The fan is mounted on the clean air side, minimizing the risk of explosion. Ideally suited for wide belt sanders and all types of dry dust generated in various technological processes. Fan power: 7.5 kW Capacity: 6000 m3/h Lrjdpfxoy A Iwce Aa Rsr Vacuum: 2400 Pa Connection diameter: 300 mm Air return Stock number: 1130

Condition: excellent (used), Year of construction: 2018, 1 x Zumex Food Engineering juice extraction and flitration system with elevator and squeezing kits. Manufactured completely in stainless steel. Technical specification ⚙️: ✅ Manufacturer - Zumex Food Engineering ✅ Model - Z450. ✅ Date of manufacture - 2018. ✅ Hopper capacity - 40 kg.  Performance Specification ⚙️: ✅ Sizes 9-10-11: Heat unit - Kit 9, Oranges/minute - 150.35, Output capacity - 902.4 kg/h, Litres/minute - 6.01 L/min, Litres/hour - 360.84 L/hr. ✅ Sizes 5-6-7-8: Heat unit - Kit 8, Oranges/minute - 133.68, Output capacity - 1145.4 kg/h, Litres/minute - 7.64 L/min, Litres/hour - 458.22 L/hr. ✅ Sizes 2-3-4: Heat unit - Kit 7, Oranges/minute - 116.94, Output capacity - 2338.8 kg/h, Litres/minute - 15.59 L/min, Litres/hour - 935.53 L/hr. PLEASE NOTE - Estimated calculations with a 40% juice performance of the oranges. FRUIT DIAMETER: Minimum:Ø55mm, Maximum:Ø100mm NET/GROSS:  750/960KG DIMENSIONS (L x W x H):  2.5 x 1 x 2.2m Lodpfx Ajt Uircoa Rerr CONSUMPTION:  2.010W VOLTAGE: 380 V / 50-60 Hz / 3 phase.

Condition: new, Year of construction: 2025, A truly reliable and mobile family: AL-KO POWER UNIT® dust extraction systems are available for maximum volume flows between 790 and 10,000 m³. This makes the energy-efficient AL-KO POWER UNIT® models the perfect solution for small to medium dust extraction volumes or an ideal addition to existing stationary systems. Your advantages: • IE 3 motor as standard • approx. 73 m² filter area • Pre-separator as standard Lrodpfx Ashkzt Nja Rsr • Certified according to GS-HO-07 • H3 residual dust content of 0.1 mg/m³ is reliably maintained (wood dust) • optionally with type-tested rotary valve airlock (FSA) • Tested backflow flap • Integrated automatic extinguishing system Technical data: • Motor rated power: 11.0 kW / 3-phase • Voltage: 400 V / 50 Hz • max. volume flow: up to 8,500 m³/h at the fan • Rated volume flow: 6,927 m³/h • Negative pressure at Vnenn.: 2,543 Pa • Suction nozzle: 350 mm • Noise level: 71 dB (A) at full load (according to DIN EN ISO 11201) • Chip collection volume (net/gross): 3 x 165 L / 3 x 250 • Dimensions (L x W x H) in mm: 3,130 x 1,058 x 2,361 • Net weight without packaging: 977 kg • Dust class H3 Location: Available from stock at 54634 Bitburg • immediately available – in stock Subject to prior sale

Condition: new, Thanks to their modular design, the PROFI JET® series system filter units enable the bespoke planning and construction of extraction solutions for virtually any required air volume and practically every conceivable application. The proven system also impresses with outstanding noise protection due to its insulated wall panels and, when installed outdoors, minimizes heat loss. Eligible for BAFA funding under Module 4. Operation: The custom-designed extraction systems of the PROFI JET series are built on a robust steel frame. The frame is fully clad with insulated, double-walled, powder-coated steel sheet panels to ensure that all components—including fan, filter cleaning, and discharge elements—are protected from dirt and weather within the closed system enclosure. The clean-air side fans are installed at the top of the unit and draw in dust- and chip-laden air into the filter section. A generously proportioned pre-separation chamber ensures effective separation of coarse particles and chips. The subsequent filter bags or cartridges remove any remaining fine dust. The cleaned exhaust air is routed through a sound-insulated return air chamber either back into the building or discharged outside. Applications: - Extraction at multiple processing machines, workstations, or entire production areas - Spatial ventilation and extraction for enclosures and work cabins - Suitable for virtually all types of dust and chips - Also for dusts and applications with ATEX classification - Extraction especially in the wood, plastics, metal, welding, cutting, and recycling industries—as well as many others Advantages: - Custom, precise planning and implementation of your extraction system - Cost-effective and quick delivery due to modular design with standard components - Quiet and energy-saving operation thanks to insulated panels - Consistently high extraction performance due to integrated pre-separation chamber and AL-KO OPTI JET® filter cleaning system - Heating cost savings, as 100% recirculated air operation is possible in many cases - Minimal space requirements due to compact construction - Suitable for indoor and outdoor installation - Professional appearance thanks to powder-coated panels - Available in ATEX-compliant versions Lrjdpfjwwryqox Aa Ror - Comprehensive accessories and numerous options for individualized system configuration - Eligible for BAFA funding under Module 4

Condition: used, Year of construction: 2020, functionality: fully functional, machine/vehicle number: 2433380060, overall weight: 176 kg, nominal power: 0.75 kW (1.02 HP), rotational speed (max.): 950 rpm, protection type (IP code): IP54, The devices in the COLOUR JET series are optimally designed for extracting paint mist and solvents at wet painting workstations. The front guide plate ensures that the mist is captured from below and at the side inlets, as solvents from paints settle and collect near the floor. At the same time, the guide plate enables uniform air distribution over the filter and protects the filter medium from direct exposure. Paint pigments are separated by the large-area replaceable filter, and the cleaned exhaust air is then discharged to the outside via a pipe or hose. Lsdpfozkgwnjx Aa Rsrr Dimensions (W x D x H) in mm: 1,012 x 1,405 x 943

Condition: used, Year of construction: 1995, functionality: unexamined, suction capacity: 10,000 m³/h, actuation type: electric, We are selling a dust extraction system from Wipos that we no longer need. We used the system to blow the chips into a container. The container is not included in this auction. Inspection is possible. Price is ex works; the buyer must dismantle the system. On-site support is available. Lsdozunzijpfx Aa Rorr No warranty is provided for the system!

Condition: excellent (used), Year of construction: 2021, Used clean air dust collector with frequency converter Year of manufacture: 2021 Max. volume flow up to 10,000 m³/h at the fan Approx. 73 m² filter area Pre-separator as standard 71 dB (A) at full load (according to DIN EN ISO 11201) Certified according to GS-HO-07 H3 residual dust content of 0.1 mg/m³ safely maintained (wood dust) Models with type-tested rotary valve airlock (FSA) Tested backflow flap Integrated automatic extinguishing system 350+ P Suction nozzle 355 mm Motor rated power 15.0 kW / 3-phase Voltage 400 V / 50 Hz Max. volume flow 10,000 m³/h Rated volume flow* 7,127 m³/h Lrsdezizz Sspfx Aa Rer Negative pressure at Vnenn. 3,347 Pa Filter area 73 m² Chip collection volume (net / gross) 3 x 165 L / 3 x 241 L Sound pressure level 72 dB (A) Dimensions (L/W/H) in mm 3,112 x 1,058 x 2,361 Weight 1,074 kg Location: in stock at warehouse 54634 Bitburg - immediately available -

Condition: used, functionality: fully functional, input voltage: 400 V, type of input current: three-phase, suction capacity: 4,900 m³/h, intake manifold diameter: 250 mm, Dust extraction unit, wood chip extractor, pneumatic self-cleaning vacuum filter – Alko Mobil JET 250 The filter is cleaned pneumatically with pulses of compressed air during operation, resulting in high device efficiency. The fan is located on the clean air side, minimizing the risk of explosion. Ideally suited for wide belt sanders and for extracting all types of dry dust in various technological processes. Lsdpfx Aszlcxqoa Rsrr Fan power: 6.5 kW Capacity: 4900 m3/h Vacuum: 2740 Pa Nozzle diameter: 250 mm Air return Stock number: 0904

Condition: used, Year of construction: 2001, from government authority used, top condition, low hours Manufacturer: AL-KO Model: Mobil Jet 100 Year of manufacture: 2001 Machine no.: 2433306444 Clean air unit / negative pressure GS dust-tested CE type-tested Lsdpfx Aaeyclxve Rsrr Motor: 1.5 kW Connection diameter: 100 mm Pressure: 1572 Pa Air output: 770 m³/h 1 collection drum 50 cm Manual filter cleaning Filter pressure monitor New price approx. 3,600.00 EUR Space required approx. 1200 x 1700 x 2000 mm Weight approx. 120 kg Location: 97447 Gerolzhofen, loaded free, unpacked Delivery in current as-inspected condition, without guarantee or warranty

Condition: used, This listing is for a Thermo Labsystems Multiskan Ascent Microplate Reader The Thermo Labsystems Multiskan Ascent is an advanced, compact, one-channel vertical light path filter photometer designed to perform standard photometric measurements. The measurement types include end point, two point and kinetic measurements. Due to the innovative optical system of the Multiskan Ascent, the instrument can read both 96- and 384-well microplates and is linear to 4.0A. The instrument is a rapid reading microplate reader. Lodpfx Aaoxzhcte Rerr

Year of construction: 2025, condition: like new (used), It is to be used for a Chemical Vapor Deposition machine but can also be used in other inflammable gas ventilcation. Lodezvh Ewopfx Aa Rsrr

Year of construction: 2022, operating hours: 427 h, condition: like new (used), functionality: fully functional, The extraction unit is from 2022 and has only 427 operating hours. It is therefore immediately ready for use and in excellent condition—see pictures. Lodpsxy Spzofx Aa Rerr The price is gross (3,500 EUR net); you will receive an invoice with VAT shown separately. The mobile LOCTITE extraction system LAS 250 is a key component for health and environmental protection at the workplace. Molecules released by adhesives in their liquid phase are captured directly at the workstation, cleaned by the extraction unit via a special activated carbon filter system, and then the purified air is returned to the workspace. This reliably prevents air pollution in the work area and ensures compliance with workplace air quality regulations. Thanks to its low weight and mobility, the LOCTITE extraction system can be easily transported to different workstations. Features: - Special fan with high pressure reserve - Adjustable flow volume control - Suitable for up to 4 workstations - Filter combination with special activated carbon - Filter cartridges are recycled upon return - Built-in operating hour counter to monitor filter element life