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Need help?Do you have a question about the ASTRO ONYX 325 and is the answer not in the manual?
Study, understand, and follow all instructions before installing, operating, servicing, or repairing this tool.
Warrants products against defective material or workmanship for 1 year from the date of 1st use.
Describes the sander's intended use for finishing and lists key product information and specifications.
Mandatory safety measures including wearing ANSI approved safety equipment and avoiding misuse.
Covers hazards like explosive atmospheres, loose clothing, high pressure, vibration, and rotating parts.
Guidance on lubrication, part tightness, storage to prevent rust, and ordering service parts.
Details on oil/water extractors, air line draining, and pipe sizing for optimal air supply.
Visual diagram of the tool's components with a detailed list of parts, numbers, and quantities.
The 325/325P is a 6" Finishing Palm Sander with a 3/32" stroke, designed for a range of sanding applications from stripping paint to achieving fine finishes on metal, plastic, and painted surfaces. This tool is intended for professional use and should not be modified or used for any purpose other than its designed intent.
The primary function of the 325/325P is to provide efficient and precise sanding. Its 3/32" stroke finish allows for fine material removal, making it suitable for tasks requiring a smooth surface. The sander operates by rotating a 6-inch backing pad, which can be either a Velcro pad (#4606) for quick abrasive changes or a PSA (Pressure Sensitive Adhesive) pad (#4608) for secure attachment of abrasives. The internal mechanism, driven by compressed air, ensures consistent rotation and orbital action, which is crucial for achieving a uniform finish without swirl marks. A built-in speed regulator allows the operator to adjust the sanding speed to match the specific requirements of the material and desired finish, enhancing control and preventing over-sanding or damage to delicate surfaces. The tool's design incorporates sealed bearings, which contribute to its extended operational life by protecting internal components from dust and debris, thereby maintaining consistent performance over time.
The 325/325P is engineered with several features to enhance user experience and operational efficiency. Its super lightweight design, at just 1.5 lbs. (.68kg), and compact form factor significantly reduce operator fatigue during prolonged use, making it comfortable to handle for extended periods. This ergonomic design is particularly beneficial in professional settings where continuous operation is common. The tool also features a low noise and vibration design, which improves the working environment by minimizing auditory distraction and physical stress on the operator. This contributes to better concentration and reduced risk of vibration-related injuries.
Before using the sander, it is crucial to perform a pre-use check. Users should consult the parts diagram and listing to ensure all components are present and undamaged. Any missing or damaged parts should be reported to the distributor before operation. This preventative measure helps ensure the tool's safe and effective functioning. The sander is designed to be connected to an air supply system, and proper connection of the air hose, ensuring all couplings and plugs are securely fixed, is paramount to prevent accidental disconnections that could lead to serious injuries.
Safety is a critical aspect of using the 325/325P. Operators are strongly advised to wear ANSI approved safety equipment, including safety glasses and appropriate clothing, to protect against potential hazards such as flying debris and microscopic particles generated during sanding. Hearing protection is also recommended due to the potential for high sound levels to cause permanent hearing loss. The tool's power source is compressed air, and users must be aware of the air pressure limits to prevent injuries from excessive pressure. It is important to avoid contact with the high-speed rotating disc to prevent cuts and other injuries. The tool is not insulated, so contact with electric currents must be avoided.
When preparing the work area, it is essential to ensure it is clean, safe, well-lit, organized, and adequately equipped. Users should review the chemical composition of the work surface and any products used in conjunction with the tool, especially concerning dust and microscopic particles. Material Safety Data Sheets (MSDS) for all identified chemicals should be obtained and followed to understand and mitigate exposure risks. Common chemicals encountered during sanding, such as lead from paints, crystalline silica from masonry, and arsenic/chromium from treated lumber, require specific precautions. To minimize exposure, users should work in well-ventilated areas and wear safety equipment designed to filter out microscopic particles.
The sander's accessories, including the #4606 6" PU Velcro Backing Pad and #4608 6" PSA Backing Pad, are designed for specific abrasive types and applications. Selecting the correct accessory of the appropriate size and design for the task is vital for optimal performance and safety. The tool should never be used in potentially explosive atmospheres, and the air hose must be disconnected before changing or adjusting any inserted tools. Operators should also be mindful of loose clothing, long hair, or other personal accessories that could get caught in moving parts. Awareness of the rotation direction before starting the tool helps prevent hazardous situations. Finally, maintaining a clear working area, free from unattended hoses, is important to prevent trips and falls.
Proper maintenance is essential for ensuring the longevity and consistent performance of the 325/325P. Regular lubrication is a key maintenance task. Before connecting the air hose, 4 to 5 drops of a good quality air tool oil should be applied at the air inlet. This lubrication helps keep internal components moving smoothly and prevents premature wear. Depending on the frequency and duration of use, re-oiling may be necessary after every 3 to 4 hours of operation.
Another critical maintenance step is regularly checking the tightness of all connection parts. This procedure should be performed daily before beginning work to ensure all components are securely fastened, preventing potential malfunctions or safety hazards during operation.
For storage, it is important to keep the tool in a location free from high humidity. Residual moisture inside the tool can lead to rust formation, which can severely impact its performance and lifespan. Before storing and after each operation, the tool should be oiled at the air inlet with a good quality air tool oil and run for a short period. This helps distribute the oil internally, protecting components from moisture and corrosion.
In the event that replacement parts or components are needed, users should contact the sales agent from whom the tool was purchased or the service division of the company. When ordering, it is crucial to provide the specific part number, name, and desired quantities to ensure the correct parts are supplied. This structured approach to maintenance and parts replacement helps maintain the tool's operational integrity and extends its service life.
Disposal of the tool should always be carried out in accordance with national waste disposal legislation, ensuring environmentally responsible practices.
General| Exhaust | Rear |
|---|---|
| Dust extraction | Yes |
| Motor | 0.21 kW |
| Air Consumption | 340 l/min |
| Operating Pressure | 6.3 bar |
| Power | 0.22 kW |
