Delta 18-900L, N081935 instruction manual Drilling Holes to Depth, Setting zero

DRILLING HOLES TO DEPTH

To reduce the risk of injury, turn unit off and disconnect it from power source before installing and removing accessories, before adjusting or when making repairs. An accidental start-up can cause injury.

When you want to drill a number of holes to the same depth, follow this procedure:

Setting zero

1.Place bit (L1) in chuck Fig. 43.

2.Lower the bit until it touches workpiece (M1) Fig. 43.

3.Raise the quill locking nut (N1) by pressing button and raising it up against the depth stop bracket (O1).

4.Turn scale on the pinion (P1) Fig. 44 to the zero mark.

Set depth

1.Remove the workpiece and rotate pinion handles to lower quill to desired drilling depth as registered on the scale.

2.Holding the quill at this depth, raise the quill locking nut (N1) Fig. 43 back up against the depth stop bracket.

3.Still holding the spindle, lower the depth stop nut (Q1) Fig. 43 down against depth stop bracket.

4.Lower the quill locking nut (N1) Fig. 43 out of the way.

To reduce the risk of injury, tighten all lock handles before starting the machine. Loss of control of the workpiece can cause serious injury.

5.Connect the machine to the power source and drill a test hole to check the adjustment. Readjust, if necessary, by rotating the stop nut (Q1) Fig. 43 for fine adjustment. You do not have to depress the button to rotate the stop nut (Q1).

MACHINE USE

NOTE: Use drill bits with shank diameters of 5/8" or less.

NOTE: After installing a drill bit, use the supplied key to tighten all three locations on the chuck.

To reduce the risk of injury, tighten all lock handles before starting the machine. Loss of control of the workpiece can cause serious injury.

To reduce the risk of injury, properly support long or wide work-pieces. Loss of control of the workpiece can cause severe injury.

To reduce the risk of injury, do not place more than 250 pounds (113 kg) of weight on the table.

The use of accessories and attachments not recommended by Delta may result in risk of injury.

IMPORTANT: When the workpiece (M1) Fig. 45 is long enough, position it on the table with one end against the left side of the column (R1) to prevent the workpiece from rotating. If it is not possible to support the workpiece against the column, clamp the workpiece to the table.

Q1

O1

N1

L1

M1

Fig. 43

P1

Fig. 44

R1

M1

Fig. 45

19