User Manual for Bauer 1641E-B Rotary Hammer

Quick Start Guide

The Bauer 1641E-B is a variable speed rotary hammer designed for drilling and chiseling. Before use, ensure the work area is clean, well-lit, and free of bystanders. Always wear appropriate personal protective equipment, including eye and ear protection. Ensure the tool is unplugged before making any adjustments or changing bits.

Safety Information

• Electrical Safety: This is a double-insulated tool and does not require grounding. Use only appropriate extension cords if necessary.
• Personal Safety: Keep hands and clothing away from moving parts. Do not operate if tired or under the influence.
• Vibration Safety: Prolonged use can cause vibration-related injuries. Take breaks, wear gloves, and grip the tool lightly.
• Pacemaker Warning: Electromagnetic fields may interfere with pacemakers. Consult a physician before use.

Specifications

• Electrical Rating: 120VAC / 60Hz / 11A
• Rotational Speed: 0-800 RPM
• Impact Rate: 0-3900 BPM
• Shank Style: SDS
• Capacities: Wood 1-1/2" (40mm), Concrete 1-1/4" (32mm), Steel 1/2" (13mm)

Setup and Adjustments

Auxiliary Handle

Turn the handle counterclockwise to loosen the band, slide to the desired position, and turn clockwise to secure.

Depth Gauge

Turn the lock knob to open the slot, insert the depth gauge, and tighten the knob to secure. The drilling depth is measured from the tip of the drill bit to the tip of the depth gauge.

Function Switching

Adjust switches only when the motor is stopped. Ensure they click into position.

• Drill: Drill Switch to "Drill ON", Hammer Switch to "Hammer OFF".
• Hammer/Drill: Drill Switch to "Drill ON", Hammer Switch to "Hammer ON".
• Chisel: Drill Switch to "Drill OFF", Hammer Switch to "Hammer ON".

Operating Instructions

1. Install the drill bit by pulling back on the chuck and inserting the bit until it slides into the opening. Release the chuck and verify the bit is secure.
2. Adjust the auxiliary handle and depth gauge as needed.
3. Set the desired function using the drill and hammer switches.
4. Set the speed using the speed control dial.
5. Plug in the power cord.
6. Squeeze and hold the trigger to start. Allow the tool to reach full speed before contacting the work surface.

Maintenance and Servicing

Procedures not explained in this manual must be performed by a qualified technician.

• Before Each Use: Inspect for loose hardware, damaged wiring, or binding parts.
• Monthly: Open the grease port, clean out old grease, and replace with new grease. Failure to do so voids the warranty.
• After Use: Wipe external surfaces with a clean cloth.

Troubleshooting

If the tool will not start, check the power connection, circuit breaker, and the tool's thermal reset button. If the tool operates slowly, avoid using long or thin extension cords. If the tool overheats, ensure vents are not blocked and the tool is not being forced.