Hitachi DV18DLP4 Instruction Manual - Page 22

English CAUTION: ● When changing the rotational speed with the shift knob, confirm that the switch is off. Changing the speed while the motor is rotating will damage the gears. ● When a large force is required for operation (operations indicated in the following chart) set the shift knob to "LOW". If "HIGH" is set and the unit is used, it may cause the motor to burn out or malfunction prematurely. ● In the work of the save mode (S), avoid the continuous screw-tightening as temperature of electronic components of the converter switch increases. Model Brick Drilling Metal Drilling Wood Drilling Wood Screw Tightening DV18DL DS18DL When the diameter of the hole __ exceeds 3/8"(10 mm). When the diameter of the hole exceeds 5/16" (8 mm). When the diameter of the hole exceeds 1-1/16" (27 mm). When the size of the wood screw exceeds 3/16" (4.8 mm) diameter × 2" (50 mm). 9. Confirm the cap position (See Fig. 21) The three modes of screwdriver, drill and hammer drill can be switched by the position of the cap in this unit. (1) When using this unit as a screwdriver, line up the one of the numbers "1, 4, 7 ... 22" on the cap, or the black dot, with the triangle mark on the outer body. (2) When using this unit as a drill, line up the cap drill mark " " with the triangle mark on the outer body. (3) When using this unit as a hammer drill, align the cap hammer mark " " with the triangle mark on the outer body. CAUTION: Cap Triangle mark Hammer mark Drill mark Fig. 21 ● The cap cannot be set between the numerals "1, 4, 7 ... 22" or the black dot. ● Do not use with the cap numeral at "22" and the black line at the middle of the drill mark. Doing so may cause damage. (See Fig. 22) 10. Rotation to Hammer changeover The "Rotation (Rotation only)" and "Hammer (Hammer + Rotation)" can be switched by aligning the drill mark " " or the hammer mark " " with the triangle mark on the outer body. ⅜ To make holes in the metal, wood or plastic, switch to "Rotation (Rotation only)". ⅜ To make holes in the bricks or concrete blocks, switch to "Hammer (Hammer + Rotation)". Hammer mark Drill mark Triangle mark Black line Fig. 22 CAUTION: ● Do not use the Cordlless hammer drill in the "Hammer" setting if the material can be bored by rotation only. Such action will not only reduce drill efficiency, but may also damage the drill tip. 22