Operation

Electric Brake

V28™ Lithium-Ion Battery Pack

WARNING

To reduce the risk of injury, keep hands away from the bit and all mov- ing parts. Always wear safety goggles or glasses with side shields.

Using the Forward/Reverse Switch

The forward/reverse switch may be set to three positions: forward, reverse and lock. Due to a lockout mechanism, the forward/ reverse switch can only be adjusted when the trigger is not depressed. Always al- low the motor to come to a complete stop before using the forward/reverse switch.

Fig. 6

Forward

Forward/ Reverse switch

Reverse

1.For forward (clockwise) rotation, push the forward/reverse switch in the direction shown. Check the direction of rotation before use.

2.For reverse (counterclockwise) rotation, push the forward/reverse switch in the direction shown. Check the direction of rotation before use.

3.To lock the trigger, push the forward/ reverse switch to the center position. The trigger will not work when the forward/reverse switch is in the locked position. Always lock the trigger or remove the battery pack before performing maintenance, chang- ing accessories, storing the tool and any time the tool is not in use.

WARNING

To reduce the risk of explosion, electric shock and property damage, always check the work area for hidden pipes and wires before drilling.

WARNING

To reduce the risk of injury, only grasp tool by handle and red insulated surfaces (Fig. 7). Do not hold gray gear case when impacting or drilling.

Fig. 7

Starting, Stopping and Controlling Speed

This impact wrench may be operated at any speed from 0 to full speed.

1.To start the tool, grasp the handle ﬁrmly and pull the trigger.

2.To vary the speed, increase or decrease the pressure on the trigger. The further the trigger is pulled, the greater the speed.

3.To stop the tool, release the trigger.

The electric brake engages when the trigger is released, causing the socket to stop and allowing you to proceed with your work. Generally, the socket stops within two seconds. However, there may be a delay between the time you release the trigger and when the brake engages. Occasionally the brake may miss completely. If the brake misses frequently, the impact wrench needs servicing by an authorized MILWAUKEE service facility.

Impacting Techniques

The longer a bolt, screw, or nut is impacted, the tighter it will become. To help prevent damaging the fasteners or workpieces, avoid excessive impacting. Be particularly careful when impacting smaller fasteners because they require less impacting to reach optimum torque.

Practice with various fasteners, noting the length of time required to reach the desired torque. Check the tightness with a hand- torque wrench. If the fasteners are too tight, reduce the impacting time. If they are not tight enough, increase the impacting time.

Impacting for two seconds is generally sufﬁcient for a 3/8" bolt and one second for a 5/16" bolt. However, oil, dirt, rust or other matter on the threads or under the head of the fastener affects the degree of tightness.

The torque required to loosen a fastener averages 75% to 80% of the tightening torque, depending on the condition of the contacting surfaces. However, if rust or corrosion causes seizing, more torque may be required.

On light gasket jobs, run each fastener down to a relatively light torque and use a hand torque wrench for ﬁnal tightening.

Unlike other battery pack types, Lithium-Ion battery packs deliver fade-free power for their entire run time. The tool will not experience a slow, gradual loss of power as you work. To signal to you that the V28 battery pack is at the end of its run time and needs to be charged, power to the tool will drop quickly. When this happens, remove the tool from the workpiece and charge the battery pack as needed.

Battery Pack Protection

To protect itself from damage and extend its life, the V28 battery pack's intelligent circuit will turn off the battery pack if its internal temperature becomes too high. This could happen in extremely high torque, binding and stalling situations. The pack must be placed on the charger to turn it back on. The charger's light indicator will ﬂash red, indicating that the pack is too hot. Once the light is continuously red, the pack has cooled and can be used again.

Cold Weather Operation

The V28 Lithium-Ion battery pack can be used in temperatures down to -4°F. When the battery pack is very cold, it may pulse for the ﬁrst minute of use to warm itself up. Put the battery pack on a tool and use the tool in a light application. After about a minute, the pack will have warmed itself up and operate normally.

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