DeWalt DWP849XD, Manual

E N G L I S H

9

continue to run. To turn the tool off from a locked-
on position, squeeze and release the trigger switch 
once. Do not unplug the tool with the switch in 
the locked-on condition. Make sure the tool is not 
locked on when plugging in. If the tool is plugged 
back in with the switch in the locked-on position, the 
tool will not run until the lock button (G) is depressed 
(no-volt release).

NOTE:

 The trigger switch can only be locked 

on with the tool running at the maximum RPM 
designated by the speed control wheel (A).

Speed control Wheel (fig. 1)

The maximum speed of your tool can be changed 
by rotating the speed control wheel (A) to the 
desired setting. The wheel incorporates detents to 
prevent inadvertent wheel movement and to facilitate 
speed selection. For added versatility, the trigger 
switch may be locked in its full on position and tool 
speed changed by means of the speed control 
wheel (A) alone.The electronic speed control not 
only lets you select the speed to suit the job, but 
also helps to maintain that speed as you load the 
tool by pressing down. It’s this feature, coupled with 
the variable speed trigger switch, that make this tool 
such a value.

The speed control wheel (A) can be set for any 
speed between 600 and 3500 RPM and the variable 
speed switch will then control tool speed from zero 
to the wheel setting. For example: A control wheel 
setting of 2200 RPM will allow the variable speed 
switch to operate the tool between zero and 2200 
RPM, depending on how far the trigger switch is 
depressed. A wheel setting of 600 RPM would allow 
the switch to operate the tool from zero to 600 
RPM.

The electronic speed control feature comes into play 
whenever the trigger switch is fully depressed and 
the tool is running at the selected speed determined 
by the setting of the control wheel. As you load the 
tool by pushing it down on the work surface, (with 
the trigger fully depressed) the electronic circuit 
inside the tool will compensate for the loading and 
maintain the selected speed. If the speed selected 
by the control wheel is 2200 RPM, as in the 
example above, the tool will maintain 2200 RPM, as 
it is loaded.

It is important to remember two things about 
electronic speed control: 

1.

The electronic speed control operates only 
when the trigger switch (C) is fully depressed. 

2.  The effect of electronic speed control is much 

easier to observe at lower speed settings 

(2600 RPM and below), than at high speeds. 
As the tool approaches 3000 RPM, the effect 
is considerably less dramatic.

Keep in mind that, with a conventional polisher 
running at a typical no-load speed of 2400 RPM, 
the tool slows down to about 2000 RPM under a 
polishing load. Your DWP894X will continue to run 
at 2400 RPM (or any speed you select with the 
control wheel) as a load is applied. Since it doesn’t 
slow down, the speed may be greater than you’re 
used to, so some extra caution should be observed 
until you get the “feel” of your polisher. If you feel the 
speed is too great, you can, of course, slow the tool 
down with either the trigger switch or the control 
wheel.

Spindle Lock Button (fig. 1)

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WARNING:

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4O¬REDUCE¬THE¬RISK¬OF¬

SERIOUS¬PERSONAL¬INJURY¬TURN¬TOOL¬OFF¬
AND¬DISCONNECT¬TOOL¬FROM¬POWER¬
SOURCE¬BEFORE¬MAKING¬ANY¬ADJUSTMENTS¬
OR¬REMOVINGINSTALLING¬ATTACHMENTS¬OR¬
ACCESSORIES¬"EFORE¬RECONNECTING¬THE¬
TOOL¬DEPRESS¬AND¬RELEASE¬THE¬TRIGGER¬
SWITCH¬TO¬ENSURE¬THAT¬THE¬TOOL¬IS¬OFF

In order to prevent the spindle of the tool from 
rotating while installing or removing accessories, a 
spindle lock button (E) has been provided in the gear 
head of the machine. To lock the spindle, depress 
and hold the lock button. NEVER DEPRESS 
THE SPINDLE LOCK BUTTON WITH THE TOOL 
RUNNING OR COASTING.

Wool Ingestion Shields (fig. 1, 2)

The wool ingestion shields (K) are designed to 
reduce the amount of wool, dust, and debris that 
gets ingested by the motor during normal use. The 
goal of the ingestion shields is to improve durability 
as compared to a unit without the ingestion shields. 

Each ingestion shield can be easily removed for 
cleaning by removing the mounting screw (L), 
followed by sliding the shield back towards the 
trigger end of the tool and then lifting it off. The wool 
ingestion shields can be cleaned with soap and 
water and a soft bristle brush in the event they get 
clogged with polish and debris. Clean the shields 
as soon as you start to see buildup on the outside. 
Your tool may come with a set of wool ingestion 
shields. The wool ingestion shields are available 
at extra cost from your local dealer or authorized 
service center.