Operation; Maintenance - DeWalt SDS Max DCH911 Instruction Manual

Consult your dealer for further information on suitable dust
extraction systems.

OPERATION


WARNING: To reduce the risk of serious personal
injury, turn unit off and remove the battery pack
before making any adjustments or removing/
installing attachments or accessories. An
accidental start‑up can cause injury.

WARNING: Always observe the safety instructions and
applicable regulations.

WARNING: Be aware of the location of pipework
and wiring.

WARNING: Apply a pressure of approx. 44–66 lbs.
(20–30 kg) to the tool. Excessive force does not speed
up chiseling but decreases tool performance and may
shorten tool life.
Installing and Removing the Battery Pack
(Fig. H)

WARNING: Ensure the tool/appliance is in the off
position before inserting the battery pack.
NoTE: For best results, make sure your battery pack is
fully charged.
1. To install the battery pack
the battery pack with the rails inside the tool's handle
and slide it into the handle until the battery pack is firmly
seated in the tool and ensure that it does not disengage.
2. To remove the battery pack from the tool, press the
battery pack release button
pack out of the tool handle. Insert it into the charger as
described in the charger section of this manual.
Proper Hand Position (Fig. G1, G2)

WARNING: To reduce the risk of serious personal injury,
ALWAYS use proper hand position as shown.

WARNING: To reduce the risk of serious personal
injury, ALWAYS hold securely in anticipation of a
sudden reaction.
IMpoRTaNT: The tool must be held with two hands at all
times when in use.
Horizontal Applications (Fig. G1)
Proper hand position requires one hand on the bail/
loop style auxiliary handle
main handle 2 .
Vertical Applications (Fig. G2)
Proper hand position requires both hands on the
main handle .
2
Demolition, Chipping and Channeling
(Fig. A)

WARNING: Ensure that the cutting edge does not
show discoloration caused by too much pressure. This
may impair the hardness of the accessory.
Various types of chisels are available as an option.
1. Select the appropriate chisel. Clean and grease its shank.
into the tool handle, align
8
9 and firmly pull the battery
5 with the other hand on the
2. Insert the chisel and check whether it is properly locked.
3. Set the desired impact energy level.
4. Fit and adjust the bail/loop style auxiliary handle
make sure it is firmly tightened.
5. Hold the tool with both the main handle and the bail/
loop style auxiliary handle and switch on. The tool now
runs in continuous operation.
6. Always switch off the tool when work is finished and
before unplugging.

MAINTENANCE


WARNING: To reduce the risk of serious personal
injury, turn unit off and remove the battery pack
before making any adjustments or removing/
installing attachments or accessories. An
accidental start‑up can cause injury.
Your D WALT power tool has been designed to operate
e
over a long period of time with a minimum of maintenance.
Continuous satisfactory operation depends upon proper tool
care and regular cleaning.
Cleaning

WARNING: Blow dirt and dust out of all air vents with
clean, dry air at least once a week. To minimize the
risk of eye injury, always wear approved eye protection
when performing this procedure.

WARNING: Never use solvents or other harsh
chemicals for cleaning the non‑metallic parts of the
tool. These chemicals may weaken the plastic materials
used in these parts. Use a cloth dampened only with
water and mild soap. Never let any liquid get inside the
tool; never immerse any part of the tool into a liquid.
Accessories

WARNING: Since accessories, other than those
offered by D WALT, have not been tested with this
e
product, use of such accessories with this tool could
be hazardous. To reduce the risk of injury, only
D WALT‑recommended accessories should be used
e
with this product.
Recommended accessories for use with your tool are
available at extra cost from your local dealer or authorized
service center.
Repairs
The charger and battery pack are not serviceable.

WARNING: To assure product SAFETY and RELIABILITY,
repairs, maintenance and adjustment (including brush
inspection and replacement) should be performed by a
D WALT factory service center or a D
e
service center. Always use identical replacement parts.
ENglIsh
5 and
WALT‑authorized
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31