DeWalt DWE4235 Original Instructions Manual page 13

Spindle Lock (Fig. B)
The spindle lock button
1
from rotating when installing or removing wheels. Operate the
spindle lock only when the tool is turned off, unplugged from
the power supply, and has come to a complete stop.
NOTICE: To reduce the risk of damage to the tool, do not engage
the spindle lock while the tool is operating. Damage to the tool
will result and attached accessory may spin off possibly resulting
in injury.
To engage the lock, depress the spindle lock button and rotate
the spindle until you are unable to rotate the spindle further.
Surface Grinding, Sanding and
Wire Brushing

CAUTION: Always use the correct guard per the
instructions in this manual.

WARNING: Metal dust build-up. Extensive use of flap
discs in metal applications can result in the increased potential
for electric shock. To reduce this risk, insert an RCD before use
and clean the ventilation slots daily by blowing dry compressed
air into the ventilation slots in accordance with the below
maintenance instructions.
To perform work on the surface of a workpiece:
1. Allow the tool to reach full speed before touching the tool to
the work surface.
2. Apply minimum pressure to the work surface, allowing the
tool to operate at high speed. Material removal rate is greatest
when the tool operates at high speed.
3. Maintain an appropriate angle between the tool and work
surface. Refer to the chart according to particular function.
Function
Grinding
Sanding with Flap Disc
Sanding with Backing Pad
Wire Brushing
4. Maintain contact between the edge of the wheel and the
work surface.
- If grinding, sanding with flap discs or wire brushing move
the tool continuously in a forward and back motion to avoid
creating gouges in the work surface.
- If sanding with a backing pad, move the tool constantly in a
straight line to prevent burning and swirling of work surface.
nOTE: Allowing the tool to rest on the work surface without
moving will damage the workpiece.
5. Remove the tool from work surface before turning tool off.
Allow the tool to stop rotating before laying it down.

CAUTION: Use extra care when working over an edge, as a
sudden sharp movement of grinder may be experienced.
is provided to prevent the spindle
Angle
Angle
20˚-30˚
5˚-10˚
5˚-15˚
5˚-10˚
Precautions To Take When Working on a
Painted Workpiece
1. Sanding or wire brushing of lead‑based paint is NOT
RECOMMENDED due to the difficulty of controlling the
contaminated dust. The greatest danger of lead poisoning is to
children and pregnant women.
2. Since it is difficult to identify whether or not a paint contains
lead without a chemical analysis, we recommend the following
precautions when sanding any paint:
Personal safety
1. No children or pregnant women should enter the work area
where the paint sanding or wire brushing is being done until all
clean up is completed.
2. A dust mask or respirator should be worn by all persons
entering the work area. The filter should be replaced daily or
whenever the wearer has difficulty breathing.
nOTE: Only those dust masks suitable for working with lead
paint dust and fumes should be used. Ordinary painting masks
do not offer this protection. See your local hardware dealer for
the proper N.I.O.S.H. approved mask.
3. NO EATING, DRINKING or SMOKING should be done in the
work area to prevent ingesting contaminated paint particles.
Workers should wash and clean up BEFORE eating, drinking or
smoking. Articles of food, drink, or smoking should not be left in
the work area where dust would settle on them.
Environmental safety
1. Paint should be removed in such a manner as to minimise
the amount of dust generated.
2. Areas where paint removal is occurring should be sealed
with plastic sheeting of 4 mils thickness.
3. Sanding should be done in a manner to reduce tracking of
paint dust outside the work area.
Cleaning and Disposal
1. All surfaces in the work area should be vacuumed and
thoroughly cleaned daily for the duration of the sanding project.
Vacuum filter bags should be changed frequently.
2. Plastic drop cloths should be gathered up and disposed of
along with any dust chips or other removal debris. They should
be placed in sealed refuse receptacles and disposed of through
regular trash pick‑up procedures.
During clean up, children and pregnant women should be kept
away from the immediate work area.
3. All toys, washable furniture and utensils used by children
should be washed thoroughly before being used again.
Edge Grinding and Cutting

WARNING: Do not use edge grinding/cutting wheels for
surface grinding applications because these wheels are not
designed for side pressures encountered with surface grinding.
Wheel breakage and injury may result.

CAUTION: Wheels used for edge grinding and cutting may
break or kick back if they bend or twist while the tool is being used.
In all edge grinding/cutting operations, the open side of the guard
must be positioned away from the operator.
NOTICE: Edge grinding/cutting with a Type 27 wheel must be
limited to shallow cutting and notching—less than 13 mm
in depth when the wheel is new. Reduce the depth of cutting/
notching equal to the reduction of the wheel radius as it wears
down. Refer to the Accessory Chart for more information. Edge
grinding/cutting with a Type 41 wheel requires usage of a Type
A guard.
English
13