Used Deckel Maho Dmu 60 Evo for sale (22,758)

Condition: used, Year of construction: 1997, operating hours: 10,227 h, functionality: fully functional, travel distance X-axis: 600 mm, travel distance Y-axis: 525 mm, travel distance Z-axis: 500 mm, table width: 540 mm, table length: 1,000 mm, overall weight: 4,500 kg, spindle speed (max.): 12,000 rpm, For sale is a machining centre from Deckel Maho, model DMU 60 E. The machine is fully functional and ready for immediate use. Particularly noteworthy are the low program run hours. Technical data: Year of manufacture (estimated): 1997 Control: HEIDENHAIN TNC 426PB Control ON: 8,283 h Machine ON: 31,148 h Program run: 10,227 h Total power requirement: approx. 26 kVA Travel X-axis: 600 mm Travel Y-axis: 525 mm Kedpfxjw I R I Hj Aa Ejdp Travel Z-axis: 500 mm Clamping surface: 1,000 x 540 mm Max. table load: 350 kg Spindle speed range: 20 - 12,000 rpm Tool holder: SK 40 Feed speed: 20 - 10,000 mm/min Rapid traverse X/Y-axis: 18 m/min Rapid traverse Z-axis: 15 m/min Tool changer: 25 positions Dimensions (L x W x H): approx. 2.95 x 2.1 x 2.26 m Weight: approx. 4,500 kg Transport and loading can be organised throughout Europe at additional cost, upon request. All prices are subject to VAT. Inspection possible by appointment. Contact us — our team will be happy to assist you. Trade-in or exchange possible! Machinery purchase / sale PURCHASE / SALE OF PRODUCTION & METALWORKING MACHINERY AND MORE. Do you require a high-quality yet affordable metalworking machine for your production? Or are you looking to sell yours? For more information or contact options, please visit our website.

Year of construction: 1998, condition: ready for operation (used), Travel X/Y/Z: 600mm/400mm/500mm, Speed: 8000rpm, Tool holder: SK40, Feed rate: 10m/min, Rapid traverse: 20m/min, Table dimensions X/Y: 1000mm/600mm, max. table load: 500kg. Machine dimensions X/Y/Z: approx. 3560mm/2700mm/2250mm, Weight: approx. 6500kg, Operating hours: approx. 66000h, Spindle hours: approx. 18000h. Including approx. 30 SK40 holders and 2x Allmatic hydraulic vices. Documentation available. An inspection on site is possible. Without IKZ and tool changer. Ksdoyn Nzrjpfx Aa Ejdp

Condition: excellent (used), Year of construction: 2002, Machining Centre - Universal Deckel Maho DMU 60 T Year of manufacture: 2002 Number of axes: 5 (3+2) Technical specifications: Kodpfexqfw Tox Aa Esdp Travel paths: X-axis: 630 mm Y-axis: 560 mm Z-axis: 560 mm Magazine positions: 24 SK 40 NC rotary table integrated into fixed table. Clamping surface: 600 x 1000 mm Diameter: 600 mm Table weight: 800 kg Number of T-slots: 8 / 1 T-slot width: 14 H12 / 14 H7 T-slot distance: 63 mm Max. table load: 350 kg Rotatable C: 360° 5 axes - Controlled NC swivel milling head (B axis) - Rotary table integrated into fixed table (C axis)

Condition: used, Year of construction: 1999, serial number 10970000633 control 3D Bahnsteuerung MILLPLUS letzte Ausbaust Control 67 10.221.661 x-travel 600 mm y-travel 700 mm z-travel 550 mm spindle SK40 - neu - 380 Std. spindle speed: 12.000 U/min Kdodpfox Uz Apjx Aa Esp tool change unit 30 Plätze Infrarot-Taster 600 L 40 bar mode of operation 3 + 4 MillPlus IT flushing gun mit Pumpe Durchmesser 630 mm T-slots 9 T-Nuten 14 H7 / 63 mm capacity 700 kg

Year of construction: 2000, condition: ready for operation (used), Travel X/Y/Z: approx. 600mm/525mm/500mm, table dimensions X/Y: 1000mm/550mm, max. table load: 350kg, tool holder: SK40, speed: 12000rpm, tool positions: 25, rapid traverse: 24m/min. Machine dimensions X/Y/Z: approx. 2900mm/2000mm/2300mm, weight: approx. 4500kg, control: Heidenhain, operating hours: approx. 87955h, spindle hours: approx. 21800h. Documentation available. On site inspection is possible. Kdjdpfjyg Nuiex Aa Eop

Condition: used, Year of construction: 2006, operating hours: 37,654 h, functionality: fully functional, machine/vehicle number: 10915548924, spindle speed (max.): 18,000 rpm, Equipment: chip conveyor, documentation/manual, rotational speed infinitely variable, We are offering this used Deckel Maho DMU 50 eVo linear universal machining centre, year of manufacture 2006. The guides of the X, Y, and Z axes, as well as the ball screws, were completely replaced at the end of 2023. Geometrically, the machine is currently as good as new. If you have any questions or need further information, please feel free to send us a message or give us a call. Kodex Srp Ujpfx Aa Esdp

Condition: good (used), Year of construction: 2001, functionality: fully functional, machine/vehicle number: 11045522744, travel distance X-axis: 500 mm, travel distance Y-axis: 420 mm, travel distance Z-axis: 380 mm, rapid traverse X-axis: 50 m/min, rapid traverse Y-axis: 50 m/min, rapid traverse Z-axis: 50 m/min, feed rate X-axis: 20 m/min, feed rate Y-axis: 20 m/min, feed rate Z-axis: 20 m/min, nominal power (apparent): 40 kVA, torque: 1,100 Nm, controller manufacturer: HEIDENHAIN, controller model: MILLPLUS, workpiece weight (max.): 330 kg, total height: 2,500 mm, total length: 3,500 mm, total width: 2,400 mm, table width: 380 mm, table length: 500 mm, overall weight: 7,000 kg, spindle speed (max.): 18,000 rpm, number of slots in tool magazine: 32, mount diameter: 40 mm, input voltage: 400 V, input frequency: 50 Hz, input current: 80 A, DECKEL MAHO DMU 50 EVOLUTION Universal Machining Center - Operating hours: see photos - Tool holder: SK 40 - Resolution of the measuring system X/Y/Z: 0.001 mm - Positioning tolerance: 0.010 mm - Max. tool length from spindle nose: 280 mm - Max. tool weight with automatic tool changer: 6 kg - Max. total tool weight in the magazine: 90 kg - NC rotary table with swivel axis, clamping surface: 500 x 380 mm - Distance of T-slots/size: 63/4 H 7 mm - Centering bore diameter: 30 H 6 mm Kedezlgnvjpfx Aa Ejdp - Max. revolutions of the table top (rotary axis): 33 rpm - Max. swiveling torque: 1400 Nm - Swiveling speed: 26 rpm Attention: The item must be picked up between October 7th and October 14th, 2026, on a date to be agreed upon. FCA D-35576 Wetzlar - loaded onto a truck.

Condition: ready for operation (used), Year of construction: 2005, travel distance X-axis: 630 mm, travel distance Y-axis: 560 mm, travel distance Z-axis: 560 mm, total height: 2,500 mm, table load: 400 kg, spindle speed (max.): 18,000 rpm, number of axes: 4, This 4-axis DECKEL MAHO DMU-60T was manufactured in 2005. It features a robust vertical machining centre with X, Y, Z travels of 630 mm, 560 mm, and 560 mm respectively. Equipped with a high-speed spindle up to 18,000 rpm and a HSK-63A taper, it ensures precision and efficiency. The machine includes a Heidenhain MillPlus CNC control and a 20-tool magazine. Consider the opportunity to buy this DECKEL MAHO DMU-60T vertical machining centre. Contact us for further details regarding this machine. Ksdpfx Aezhm Etsa Eodp • Table size (L x W): 1000 x 600 mm • CNC control: Heidenhain MillPlus • Tool magazine capacity: 20 tools • Through-spindle coolant: Yes Additional equipment • Chip conveyor Dimensions Machine Depth 3000 mm

Condition: reconditioned (used), Year of construction: 2008, functionality: fully functional, travel distance X-axis: 1,600 mm, travel distance Y-axis: 1,250 mm, travel distance Z-axis: 1,000 mm, rapid traverse X-axis: 60 m/min, rapid traverse Y-axis: 60 m/min, rapid traverse Z-axis: 60 m/min, feed rate X-axis: 15 m/min, feed rate Y-axis: 15 m/min, feed rate Z-axis: 15 m/min, controller model: HEIDENHAIN TNC 530, workpiece weight (max.): 4,000 kg, overall weight: 35,000 kg, spindle speed (min.): 20 rpm, spindle speed (max.): 12,000 rpm, spindle nose: SK 40 (DIN 69871), number of slots in tool magazine: 60, CNC Machining centre DECKEL MAHO DMU 160 P TECHNICAL CHARACTERISTICS: Year of manufacturing: 2008 CNC control: HEIDENHAIN TNC 530 Number of simultaneous axes: 5 Stroke X axis: 1600 [mm] Stroke Y axis: 1250 [mm] Stroke Z axis: 1000 [mm] Feed rate on X, Y and Z axes: 15000 [mm/min] Kdodozggmbepfx Aa Eep Traversing feeds X, Y and Z axes: 60000 [mm/min] Table dimensions: Ø1500 x 1250 [mm] Max. load on table: 4000 [Kg] Spindle type: SK 40 (DIN 69871) Min. spindle speed: 20 [rpm] Max. spindle speed 12000: [rpm] Tool changer magazin number of stations: 60 Machine weight: 35000 [Kg] INCLUDED EQUIPMENT: 1 × HEIDENHAIN part probe 1 × laser measuring system for tool setting and tool monitoring 3 × HEIDENHAIN linear glas scales on the X, Y and Z axes 1 × through-spindle coolant system 1 × chip conveyor 1 × paper-band filtration unit (paper filter system) More information upon request.

Condition: used, Year of construction: 2003, functionality: fully functional, travel distance X-axis: 1,600 mm, travel distance Y-axis: 1,250 mm, travel distance Z-axis: 1,000 mm, rapid traverse X-axis: 60 m/min, rapid traverse Y-axis: 60 m/min, rapid traverse Z-axis: 60 m/min, feed length X-axis: 1,600 mm, feed length Y-axis: 1,250 mm, feed length Z-axis: 1,000 mm, feed rate X-axis: 15 m/min, feed rate Y-axis: 15 m/min, feed rate Z-axis: 15 m/min, nominal power (apparent): 90 kVA, controller manufacturer: HEIDENHAIN, controller model: TNC 530, workpiece weight (max.): 3,000 kg, total height: 3,600 mm, total length: 8,017 mm, total width: 4,905 mm, table width: 1,000 mm, table length: 1,250 mm, table load: 3,000 kg, rotational speed (max.): 10 rpm, overall weight: 35,000 kg, spindle speed (max.): 18,000 rpm, spindle motor power: 28 W, spindle nose: HSK63A, number of slots in tool magazine: 60, Equipment: CE marking, chip conveyor, documentation/manual, rotational speed infinitely variable, Equipped with: - 5 axes - Automatic pallet changer system Kdedpfx Aozgbdzea Eop - High-pressure coolant system running through the spindle with paper filter and 1000-liter tank - Automatic tool presetting system by BLUM - CE marking

Condition: ready for operation (used), operating hours: 41,072 h, functionality: fully functional, travel distance X-axis: 630 mm, travel distance Y-axis: 560 mm, travel distance Z-axis: 560 mm, spindle speed (max.): 12,000 rpm, number of slots in tool magazine: 20, TECHNICAL DETAILS Travel range, X-axis: 630 mm Kodpfozd Aw Djx Aa Eodp Travel range, Y-axis: 560 mm Travel range, Z-axis: 560 mm Spindle speed: 12,000 rpm Feed rate: 20-10,000 mm/min Rapid traverse rate, X/Y/Z-axis: 26/26/20 m/min Number of tool changer positions: 20 Spindle taper: SK 40 Table clamping surface (L x W): 1,000 x 600 mm MACHINE DETAILS Control model: Heidenhain TNC 430 Total power consumption: 26 kW Operating hours: 41,072 h Machine weight: approx. 6.5 t EQUIPMENT B-axis (NC milling head) Electric handwheel Chip conveyor Cooling system

Condition: used, Year of construction: 2002, Technical details: x-travel: 630 mm Kedpfx Aajxn Swne Eedp y-travel: 560 mm z-travel: 560 mm weight of the machine ca.: 6,5 t Number of axles: 5 St. spindle turning speed range: 18.000 U/min numbers of tools in magazin: 24 tool taper: SK 40 Round Table B-Axis *

Condition: good (used), For sale is a Deckel Maho DMU 60T machining center. The machine can be inspected on site. Kdedpfeydm Sasx Aa Ejp

Condition: used, Year of construction: 2001, Technical details: x-travel: 630 mm y-travel: 560 mm z-travel: 560 mm c-axis: Tisch 360° ° b-axis: Spindel=rechts:90/links=10° manuell ° control: Heidenhain TNC 430 MillPlusM table-size: 1000x600 mm table load capacity: 400 kg tool taper: SK 40 Revolution per minute: 20 - 12 000 U/min. feed speeds infinitely variable: x/y/z= 20 - 10.000 mm/min tool changer: 2 Magazine tool changer with: 12 place pro Magazin spindle hours: 21 212 h operating hours - idle run: 49 845 h total power requirement: 20,6 kW Weight approx.: 6,7 t Kodpfju Idgcsx Aa Eodp dimension machine xH: 3,0 x 2,0 x 2,15 m Equipment: - AC motors for x/y and z-axis - Tool clamping hydraulic/mechanical - Chip conveyor with separator (screw conveyor) - seperately working indexing head Ø 300mm with manual control unit for B-axis table tilting -10° / +95° and C-axis table turning 360° (not interpolable, electric selectable via manual control unit) - Coolant unit 8 m³/h (dimensions: L:1,1 x W: 0,54 x H:1,2m) - control unit *

Condition: used, Year of construction: 2002, x-travel 750 mm y-travel 600 mm z-travel 520 mm control iTNC 530 Heidenhain turning speed range - main spindle 20 - 18.000 min/-1 Kdodpfountmdjx Aa Eop power capacity - main spindel 35 / 25 kW max. Torque 130 / 87 Nm tool taper HSK-A63 table surface area 700 x 500 mm Swivel range B-Axis 0 - 180 ° Swivel range C-Axis 0,001 ° max. table load 350 kg center hole 30 H6 mm T-slots 7x 14H7 x 63 mm table turning speeds 21,5 rpm number of toolpositions 32 pos. max. tool length 315 mm max. tool diameter 105 mm max. tool-dia with free toolbox 130 mm max. tool weight 6,0 kg rapid traverse ( X / Y / Z ) 50 / 50 / 50 m/min feed speeds 20.000 mm/min Feed force X / Y / Z: 8 / 8 / 7 kN total power requirement 50 kVA weight of the machine ca. 8,5 t dimensions of the machine ca. 6,5 x 3,5 x 3,5 m 5 Axis-CNC-Machining Center DECKEL MAHO - DMU 70 eVolution - 5 Axis - NC-Swivel-Rotary-Table - Operating-Hours: Power-On: ca. 62.500h / Spindle: ca. 15.100h

Year of construction: 2001, operating hours: 26,266 h, condition: used, Colour: Grey Empty weight: 7.000 kg Dimensions (LxBxH): 350 x 220 x 240 cm Price: On request Milling machine, VMC Model: CNC Manufacturer: DMG / Deckel MAHO Type: DMU60T Year of manufacturing: 2001 Ksdpfx Aeywt Nyea Eedp Control: Heidenhain Working-hours: 26266 Travel: 630x560x560mm Spindle-speed: 10.000 rpm Table-dimensions: 1000x600mm Spindle-take: ISO40 Max. Workpiece-weight: 400kg Incl. Filter Interlit SK200-760 Incl. Automatic toolholder Incl. Documents Incl. Video available Machine-weight: 6700kg Machine-dimensions: 3500x2400x2200mm - Year: 2001 - Documentation available: Yes - CE marking present: Yes - CE certificate present: No - Operating hours: 26266 - Drive system: CNC - Number of axes [pcs]: 3 - X-axis travel [mm]: 630 - Y-axis travel [mm]: 560 - Z-axis travel [mm]: 560 - Table length [mm]: 1000 - Table width [mm]: 600 - Tool holder: SK40 - Max. spindle speed [rpm]: 10000 - Options: External cooling, Tool magazine - Transport dimensions: 3500mm x 2200mm x 2400mm (l x w x h) - Transport weight [kg]: 7000kg - Transport packages [pcs.]: 1 Financial information VAT: The price shown is exclusive of VAT VAT/margin: VAT deductible for entrepreneurs Delivery and trade-in always possible for everything in the industrial sectors Lukas van Rossum

Condition: used, DECKEL MAHO DMU 60T Kjdewg Df Dopfx Aa Esdp HEIDENHAIN 426 – worktable dimensions (length x width): 900 x 500 mm – table load: 350 kg – maximum feeds in the X/Y/Z axes: 600/525/ 500 mm

Condition: ready for operation (used), Year of construction: 2001, travel distance X-axis: 630 mm, travel distance Y-axis: 560 mm, travel distance Z-axis: 560 mm, controller manufacturer: HEIDENHAIN, spindle speed (max.): 12,000 rpm, number of axes: 5, This 5-axis DECKEL MAHO DMU 60T was manufactured in 2001. It features an X-axis travel of 630 mm, Y-axis travel of 560 mm, and Z-axis travel of 560 mm. The machine includes a table size of 1000 x 600 mm and a tool magazine with 2x12 positions. If you are looking to get high-quality machining capabilities, consider the DECKEL MAHO DMU 60T vertical machining centre we have for sale. Contact us for further details. Kodpfx Aaey Hktbj Eodp • Table size: 1000 x 600 mm • Tool magazine: 2x12 positions • Incl. a set of tool holders • Under power and well maintained machine. Technical Specification Taper Size SK 40

Condition: excellent (used), Hello, I have for sale a Deckel Maho DMU 60T Machining Center. Control: Heidenhain 430 Machine Technical Condition – Excellent Year of Manufacture: 2000 Country of Manufacture: Germany Machine Specifications: Ksdpfoy Rb Dfox Aa Esdp X-axis travel: 630 mm Y-axis travel: 560 mm Z-axis travel: 560 mm Swiveling head Maximum spindle speed: 18,000 rpm Tool magazine: 24 tools (2 x 12 positions) Heidenhain linear scales on all axes Through-spindle coolant supply Chip conveyor High-pressure coolant system Central lubrication system Hydraulic tool clamping Spindle taper: SK40 Full programming manual Mechanical and electrical documentation Loading included in the price About us: For 19 years, Stal-Com has been engaged in the sale, servicing, and training on CNC machines from the DMG group. We specialize in all Gildemeister lathe models and Deckel Maho machining centers. All machines undergo a meticulous technical inspection. Besides Polish customers, our machines are also purchased by clients throughout Europe and some parts of Asia. Each machine can be inspected during operation, as we additionally carry out machining services ourselves. After purchasing a machine from our company, we provide staff training and can also assist with commissioning the production of parts at the client's facility. We work with many companies on a long-term cooperation basis, supplying them with subsequent machine tools.

Condition: excellent (used), Year of construction: 2000, Controll HeidenHain 3D 430 Spindle Taper SK 40 Power on spindle13 kW CNC Automatic milling head / Gr.-91 to + 12 Grad X – Travel 630 mm Y – Travel 560 mm Kodpogqbp Usfx Aa Eodp Z – Travel 560 mm Table Length x Width 1000 x 600 mm Table load 500 Kg Number off controlled axis 4 ATC tool changer 20 Spindle speeds / ranges 18000 Rpm

Condition: good (used), Year of construction: 2004, functionality: fully functional, operating hours: 39,000 h, travel distance X-axis: 500 mm, travel distance Y-axis: 420 mm, travel distance Z-axis: 380 mm, total height: 5,600 mm, total length: 9,000 mm, overall weight: 6,000 kg, controller model: Heidenhain Mill Plus IT, For sale is a 5 axis machining center of the Makre DMU and type 50 eVolution Please note the GMN high frequency spindle spindle HCS 30.000 /15 and the 92-fold tool changer The machine is in good condition and fully functional Technical data Year of construction: 2004 Operating hours: approx. 39,000 h Control system: Heidenhain MillPlus IT Table size: approx 500 mm ⌀ Traverse paths: X-axis: 500 mm Y-axis: 420 mm Z-axis: 380 mm A-axis: 0-180° C-axis: 360 ° Tool holder: HSK 50 Spindle speeds: max: 30,000 1/min Frequency: 500 Hz Power: 15 kW Tool places: 92 NO chip conveyor Space requirement according to drawing: 9,000*5,600 mm Transport dimensions: 2,800*3,700*2,800 mm Weight: 6,000 kg On request, transport and loading can be organized throughout Europe for an additional charge. Kdsdpjtyit Esfx Aa Eop Prices plus VAT Viewing possible by appointment. Contact us, our team will be happy to help you. Trade-in or exchange possible! Machines purchase / sale PURCHASE / SALE OF PRODUCTION & METALWORKING MACHINES AND MUCH MORE. Fzho0bc Do you need a high-quality but inexpensive metalworking machine for your production? Or do you want to sell yours? For more information or to contact us, please visit our website

Condition: ready for operation (used), Year of construction: 2004, operating hours: 18,183 h, functionality: fully functional, machine/vehicle number: 15035709304, travel distance X-axis: 700 mm, travel distance Y-axis: 600 mm, travel distance Z-axis: 520 mm, swivel angle B-axis (max.): 180 °, swivel angle C-axis (max.): 360 °, The machine will remain powered until 06.03.2026. TECHNICAL DETAILS Travel distances X-axis travel: 750 mm Y-axis travel: 600 mm Z-axis travel: 520 mm C-axis: ±360° B-axis: 180° Spindle type: SK-40 Spindle speed: 18,000 rpm Rotary table Clamping surface: 700 × 500 mm T-slot spacing: 63 mm Number of T-slots: 7 T-slot size: 14 H7 Centering bore: 30 H6 Rotary axis torque: max. 1,674 Nm Table rotation speed: max. 21.5 rpm Swivel torque: max. 2,019 Nm Swivel speed: 18.9 rpm Swivel range: 0 – 180° Input/display unit: 0.001° Maximum tool length from spindle nose: 315 mm Maximum tool weight (with automatic tool changer): 6 kg Ksdpfoymmpdox Aa Ejdp MACHINE DETAILS Control system: Siemens 840D Shop Mill Operating hours Power-on hours: 65,794 h Spindle hours: 18,183 h Dimensions & Weight Machine dimensions (L x W x H): 2,604 x 2,820 x 2,785 mm Machine weight (including base): 9,255 kg EQUIPMENT 5-axis simultaneous machining 32-position tool changer Chip conveyor IKZ (internal coolant supply) with 70 bar Blum TC50 spindle probe

Condition: excellent (used), Year of construction: 2004, travel distance X-axis: 1,600 mm, travel distance Y-axis: 1,250 mm, travel distance Z-axis: 1,000 mm, rotary table diameter: 1,500 mm, spindle speed (min.): 18,000 rpm, spindle speed (max.): 18,000 rpm, Heidenhain iTNC 530 control Tool changer for 60 tools Kedpfxow Ngk Hs Aa Ejdp Automatic head 180/-7° stepless

Condition: excellent (used), Year of construction: 1999, X-axis travel: 1,250 mm Y-axis travel: 880 mm Z-axis travel: 800 mm Kodpfx Aegypabsa Esdp Main spindle: Speed range – main spindle, max. 12,000 rpm Drive power – main spindle: 15 / 10 kW Table surface area: 1,500 x 1,050 mm Number of tool positions: 30

Condition: ready for operation (used), Year of construction: 2005, operating hours: 20,729 h, functionality: fully functional, travel distance X-axis: 980 mm, travel distance Y-axis: 630 mm, travel distance Z-axis: 630 mm, controller model: Heidenhain iTNC 530, rotational speed (max.): 18,000 rpm, TECHNICAL DETAILS Travel range X-axis: 980 mm Travel range Y-axis: 630 mm Travel range Z-axis: 630 mm Spindle speed range: 0–18,000 rpm Tool holder: HSK 63 MACHINE DETAILS Control system: Heidenhain iTNC 530 Clamping area: 1,250 × 700 mm Operating hours Machine operating hours: 46,922 h Program runtime: 20,279 h Spindle operating hours: 20,746 h EQUIPMENT Fixed angular table 3D measuring probe Heidenhain Tool measurement in the working area with BLUM laser Vertical tool changer with 32 magazine slots Full protective enclosure with sliding doors and interior lighting Electronic handwheel Operating modes 3 and 4 Chip conveyor Coolant system 3 height-adjustable machine feet Kdodpfezmry Tox Aa Eop Spindle cooler Control cabinet cooler from Rittal Operating manuals