Descaling Tool Maintenance And Common Faults

Most Faults Are Supply Faults

When a pneumatic scaling tool feels weak, the first assumption on board is usually that the tool is worn. More often the tool is fine and the supply is not. Before opening anything, check the pressure at the tool rather than at the receiver, check the coupling for leaks, and check the hose run for length and kinks.

The manufacturer sheets state the supplying source and the estimated air consumption for each model. A tool run below its stated supply will not reach the blows per minute on the sheet, and no amount of servicing changes that.

Pneumatic Tool Checklist

• Pressure measured at the tool inlet under load, not at rest
• Coupling seating clean and undamaged; a leaking coupling costs more than a worn piston
• Hose length and diameter appropriate for the consumption figure
• Line lubrication where the tool requires it
• Needles or chains inspected — bent, short or missing elements change the tool's behaviour completely

Electric Tool Checklist

• Supply voltage and frequency matched to the code that was ordered
• Cable length and cross section adequate for the current draw at the working position
• Ventilation openings clear of scale dust
• Brushes and moving parts inspected on the maintenance interval, not on failure

Keeping The Working Area Clean Is Maintenance

Scale dust drawn into a motor or packed into a mechanism shortens tool life more than the work itself does. Using a pneumatic vacuum cleaner as part of the working sequence protects the tools as well as the accommodation.

Stock The Failure Points

The parts that stop a campaign are needles, chains, couplings and hose. They are all inexpensive and all have a lead time. Carrying spares of the four items most likely to fail is cheaper than a stalled campaign, and they take almost no store space.