SOP for the ProMac 378C Drill Press with Slow/Fast Speed Switch

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1. Purpose

To establish safe and consistent operating procedures for using the drill press equipped with a simple speed selector switch, minimizing risks and ensuring quality drilling.

2. Scope

Applies to all authorized and trained personnel operating the drill press in the GHE workshop.

3. Personal Protective Equipment (PPE)

  • Safety glasses or face shield
  • Hearing protection if needed
  • No loose clothing, jewelry, or gloves
  • Long hair tied back
  • Closed-toe shoes

4. Pre-Operation Checks

  • Ensure the work area is clean, dry, and free of obstructions.
  • Check that the drill press is securely mounted or stable.
  • Verify that all guards and safety shields are in place.
  • Inspect the electrical cord and plug for damage.
  • Confirm the drill bit is sharp, correctly sized, and securely tightened with the chuck key removed before operation.
  • Adjust the table height and angle as required and securely lock in position.
  • Clamp the workpiece securely with a vise or clamps to prevent movement.
  • Set the depth stop if applicable.

5. Speed Selection

  • Select Slow speed for harder materials or larger diameter bits to prevent overheating and bit damage.
  • Select Fast speed for softer materials or smaller diameter bits for cleaner, faster drilling.

6. Operating Procedures

  • Stand clear of the rotating drill bit and ensure no body parts or loose items are near moving parts.
  • Turn the drill press ON using the main switch.
  • Slowly lower the drill bit to the workpiece, applying moderate, steady pressure—do not force the drill bit.
  • Use the appropriate coolant or lubricant for metal drilling if necessary.
  • Drill fully through the workpiece or to the desired depth, then slowly retract the drill bit.
  • Turn the drill press OFF before removing the workpiece or making adjustments.

7. Post-Operation

  • Wait for the drill bit to stop moving completely before opening any guards or removing the workpiece.
  • Use a brush to clean metal or wood chips from the table—never use hands.
  • Remove and store drill bits properly and clean the chuck if needed.
  • Ensure the machine is turned OFF and unplugged if cleaning or maintenance is required.
  • Keep the area around the drill press clean and free of debris.
  • Clean the area after use, disposing of any waste materials properly.

8. Emergency Procedures

  • Know the location of the emergency stop and the main power switch.
  • In case of abnormal noise, vibration, or malfunction, stop the machine immediately.
  • Report any injuries or malfunctions to the supervisor immediately.