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This document outlines the operating instructions for a built-in device designed for conveying air. It emphasizes safety, proper usage, and maintenance to ensure optimal performance and longevity.
The device is an air-conveying unit, specifically a fan, intended for integration into larger systems. Its primary function is to move air according to its technical specifications. It operates within power systems with grounded neutral (TN/TT), phase conductor grounding, or IT power systems, and is designed for use in networks conforming to EN 50160 quality characteristics. The device is equipped with an integrated PI controller, configurable inputs/outputs (I/O), and supports MODBUS V6.3 communication. It features motor current limitation, soft start functionality, and a voltage output for external devices. Safety features include reverse polarity and locked-rotor protection, as well as thermal overload protection for both electronics and the motor. It also detects line undervoltage and phase failure. The device is designed for stationary systems and includes a status relay for monitoring its operational state.
The fan is designed for continuous operation within a specified ambient temperature range, with occasional start-up permitted at lower temperatures, particularly for refrigeration applications requiring special low-temperature bearings. It is crucial to operate the device with all protective devices in place and to adhere strictly to the operating instructions. The device should only be used to convey air at ambient air pressure between 800 mbar and 1050 mbar.
Improper use, which can be hazardous, includes operating the device in an unbalanced state (e.g., due to dirt or ice), in resonant operation, or with severe vibration. It is not suitable for medical equipment with life-sustaining functions. Conveying solids, abrasive particles, highly corrosive air (unless specifically designed for it), or air with high dust content (e.g., sawdust) is prohibited. Painting the device, allowing connections to come loose, or operating it in an explosive atmosphere are also forbidden. The device should not be used as a safety component or for safety-related functions, nor should it be operated with disassembled or manipulated protective devices.
Mechanical connection requires careful handling to avoid bending blades or subjecting them to shock. The device is heavy, requiring suitable hoisting equipment for unpacking. Once installed, the impeller must move freely without deformation or obstruction. Electrical connection must comply with specified voltage and current levels, using appropriate cable cross-sections and fuses. Protective earth must always be connected first. The device is a built-in component and lacks a disconnecting switch, so it must be connected to circuits that can be switched off with an all-pole disconnection switch. Control lines should be routed separately from supply lines to avoid interference. Water ingress into cables must be prevented by proper cable routing, such as creating a U-shaped loop or drip edge.
The device features locked-rotor protection, ensuring the starting current does not exceed the nominal current. Factory settings include PWM control for both parameter sets, a fan/device address, and defined maximum and minimum PWM percentages. The set value requirement is analog (linear), with a positive (heating) direction of action for both parameter sets.
Regular maintenance is essential for ensuring a long service life. This includes checking the fan regularly for proper operation and soiling, with the frequency adjusted based on the degree of soiling. Cleaning should only be performed when the fan is not in motion and disconnected from the power supply via the control input to prevent accidental start-up. Dry cleaning, preferably with compressed air, is the recommended method. Aggressive cleaning agents, high-pressure cleaners, acids, alkalis, solvents, or pointed/sharp-edged objects must not be used. All cleaning agents must be completely removed.
If severe corrosion is observed on load-bearing or rotating parts, the device must be immediately switched off and replaced, as repair of these parts is not permitted. After cleaning, the fan should be operated at maximum speed for two hours to evaporate any ingressed water. If vibrations persist after cleaning, the fan may need rebalancing.
The fan is equipped with maintenance-free ball bearings designed for a service life of 40,000 hours. If bearing replacement becomes necessary after this period, ebm-papst should be contacted. Maintenance intervals should be adapted to the actual level of dust exposure.
Safety inspections include regular visual checks of contact protection covers, blades, housing, cable fastenings, and insulation for damage. Condensation drainage holes should be checked for clogging. Welds should be inspected for crack formation, and abnormal bearing noise should be investigated.
The device has integrated protective functions that automatically switch off the motor in case of faults such as rotor position detection error, blocked rotor, line undervoltage, or phase failure. For blocked rotor, the motor restarts automatically once the blockage is removed. For line undervoltage, it restarts when the voltage returns to permitted values. For phase failure, it restarts after 10-40 seconds once all phases are correctly supplied.
In the event of malfunctions, no repairs should be attempted; the device should be sent to ebm-papst for repair or replacement. If the device is not operated for a lengthy period in a dry environment, it should be started and operated at full speed for one hour every four months. In a damp environment (e.g., outdoors), this should be done for at least three hours once a month to move the bearings and evaporate any condensate.
The electronics housing features an LED that indicates motor status with various colors and flash codes. Green signifies no warning or fault, orange indicates a warning requiring no user intervention, and red indicates an error. Multiple simultaneous errors or warnings are displayed in succession, with errors taking precedence. Warning codes include current limitation, high line impedance, power limiter in action, high output stage temperature, and high motor temperature. Error codes include phase failure/line undervoltage, output stage overheating, communication error, motor overheating, Hall sensor error, and motor blocked.
Disassembly of the product must be performed by qualified personnel, as heavy parts may drop off. Components are mostly steel, copper, aluminum, and plastic, and should be separated for recycling. Ferrite magnets can be disposed of with normal iron and steel. Electrical insulating materials, cables, wires, and electrolytic capacitors should be treated as electronic scrap. Country-specific legal requirements for disposal must always be observed.
General| Manufacturer | ebm-papst |
|---|---|
| Model Number | W3G800-NU21-08 |
| Type | Axial Fan |
| Rated Voltage | 230 V |
| Voltage | 230 V |
| Frequency | 50/60 Hz |
| Airflow | 800 m³/h |
| Speed | 3000 rpm |
| Impeller Material | Plastic |
| Weight | 4.5 kg |
| Housing material | Plastic |
| Protection class | IP54 |
| Approval | CE |
| Phase | Single Phase |
