MIAG Forklift owner’s, service and maintenance manuals, error codes list, DTC, spare parts manuals & catalogs, wiring diagrams, schematics free download PDF
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MIAG Forklift Manuals PDF
It was in 1846 that Luther Wolfenbuttel laid the groundwork for what would become MIAG, a manufacturer of flour milling machines. Having established an electric machinery division in 1922, MIAG manufactured the world’s first electric forklift in 1927. It was an electric cart outfitted with a forklift and a counterweight. Explosion-proof technology was initially developed in 1936, and by 1938, the first explosion-proof electric tractor had been manufactured.
The LM 1 EEX, the first explosion-proof electric forklift, went into service in 1955; the LM 20 DX, the first diesel explosion-proof forklift, followed in 1962. Both machines are zone 1 certified (possible explosive concentration of impurities during regular operation).
The Bhler-MIAG GmbH’s industrial forklift division split out in 1983 to form MIAG Fahrzeugbau GmbH. The present headquarters of the corporation may be found on a 20,000-square-meter plot of land in Braunschweig, Lower Saxony.
MIAG’s current production program focuses primarily on industrial loading equipment for use in explosive environments; thus, the model range includes some unusual variants, such as an escorted electric pallet truck with a carrying capacity of 10 tons (!) and escorted electric tractors, in addition to the standard counterbalanced forklift trucks, reach trucks, stackers, and escorted pallet transporters.
The following products are included in the entire inventory of MIAG explosion-proof gear:
- Platform electric trolleys with a cabin carrying up to 2.5 tons; f
- Fork three- and four-wheel electric loaders carrying 1 to 4 tons;
- Fork diesel loaders carrying 1.2… 4 tons;
- Electric carts, stackers, and reach trucks;
How is protection against explosions provided?
Forklifts made by MIAG are designed to be explosion-proof, and parameters are automatically controlled. For example, automation ensures that the units’ temperature stays within the acceptable range.
Each machine produces a lot of heat, whether it has an internal combustion engine or an electric motor. On a moving item, static electricity builds up and can unleash sparks. Sparks can also be seen when metal pieces collide, and an electrical circuit has loose contact. In other words, any machine becomes extremely dangerous in an explosive environment, and it is the job of those who design explosion-proof machinery to completely prevent the risk of sparks, heating surfaces over the safe temperature, and static charge buildup. To prevent sparks from forming from metal parts colliding or rubbing against one another, all machine parts are sealed. In addition, all electrical circuit components, including electric motors, generators, switching devices, lighting and signaling equipment, and electrical wire, are sealed and protected from mechanical damage.
The battery is mounted for the same reason on an explosion-proof pallet with sealed contact connectors (traction on electric forklifts and starter on diesel forklifts). The prongs are covered in a material resistant to explosions, such as copper, bronze, or stainless steel, to prevent sparking when they contact metal or stone. The braking discs are encased in an oil bath and constructed of non-metallic materials. All driving functions are turned off when the handbrake is applied with an automatic stop. This keeps the brake system from overheating excessively, even during emergency braking.
Belt drives are one of the principal sources of static charge. Drive belts constructed of conductive material are a feature of MIAG equipment, preventing static charges from building up on rotating components. However, because the loader is grounded and the tires and wheel hubs are likewise constructed of conductive material, they will gradually “drain” from one node to another and fall into the earth.
An automated explosion safety control system keeps track of the loader’s operating parameters. For example, on forklifts, the frequency of engine rotation, the pressure of engine oil and oil in the hydraulic system, the fluid temperature in the cooling and hydraulic systems, and exhaust gas temperature are all monitored. The temperature of the electric motor windings and the oil in the hydraulic system is also observed on electric forklifts. The loader will immediately stop for cooling as soon as one of these parameters exceeds the permitted limit.
Electric asynchronous motors that are explosion-proof are included in MIAG electric forklifts. Its benefits are well recognized, including accurate acceleration control, battery recharge during braking (regenerative braking), compactness, no sparking while operating, and minimal maintenance requirements (asynchronous motors do not have graphite brushes). The truck stops instantly once the driver releases the accelerator pedal because the engine switches to generator mode and takes effort to rotate. The battery is currently being recharged. Far less frequently must the brakes be applied.
The MDE 226B-3x (three-cylinder, 45 kW) and MDE 226B-4x (four-cylinder, 60 kW) engines are utilized as the power source in MIAG diesel variants. The surface temperature does not exceed 200 °C. Hence these power levels belong to the temperature class T3. The maximum diesel power is lowered for the T4 temperature class (surface temperature not exceeding 135 °C): for the MDE 226B-3x engine, up to 36 kW, and for the MDE 226B-4x engine, up to 48 kW. Both units have undergone testing and received EN 1834-1 certification, making them both suitable for zone 1. You may start the engine immediately in dangerous places thanks to the explosion-proof electronic starter. There is a spark gap and a flame arrester in the exhaust system.
MIAG loaders also meet the newest specifications in terms of performance and ergonomics. To lessen vibration, the cab and engine are situated on shock-absorbing mounts. The brake and accelerator pedals on an automated gearbox (hydrostatic or hydrodynamic) may control the movement. The forks can be lifted fast thanks to the low-speed travel mechanism. A closed cabin and an exemplary filtration system are fitted as options.
The items made by MIAG are highly known worldwide. In addition to Germany, loaders of this model are used in 36 other nations, including Austria, Great Britain, Sweden, Italy, Denmark, Finland, France, Norway, Switzerland, China, and South Korea.