Electronic Protection System; Optional Accessory - Black & Decker BDCOS20 Instruction Manual

20v max oscillating tool
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switches to the pack charging mode. This feature ensures
maximum battery pack life.
A cold battery pack may charge at a slower rate than a warm
battery pack.
The hot/cold pack delay will be indicated by the red light
continuously flashing a short ON followed by a longer ON
(see charger for blink pattern). Once the battery pack has
reached an appropriate temperature, the charger will resume
the charging procedure.

Electronic Protection System

Li‑Ion tools are designed with an Electronic Protection
System that will protect the battery pack against overloading,
overheating or deep discharge. The tool will automatically
turn off and the battery pack will need to be recharged.
Important Charging Notes
1. The charger and battery pack may become warm to the
touch while charging. This is a normal condition, and
does not indicate a problem. To facilitate the cooling of
the battery pack after use, avoid placing the charger or
battery pack in a warm environment such as in a metal
shed or an uninsulated trailer.
2. If the battery pack does not charge properly:
a. Check operation of receptacle by plugging in a lamp
or other appliance;
b. Check to see if receptacle is connected to a light
switch which turns power off when you turn out
the lights;
c. If charging problems persist, take the tool, battery
pack and charger to your local service center.
3. You may charge a partially used pack whenever you
desire with no adverse effect on the battery pack.
Charger Cleaning Instructions

WARNING: Shock hazard. Disconnect the charger from
the AC outlet before cleaning. Dirt and grease may be
removed from the exterior of the charger using a cloth
or soft non‑metallic brush. Do not use water or any
cleaning solutions.
SAVE THESE INSTRUCTIONS FOR
FUTURE USE
ASSEMBLY AND ADJUSTMENTS

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: Risk of lacerations or burns. Do not touch
the sharp edges of accessories at any time. Do not
touch workpiece or blade immediately after operating
the tool. They can become very hot. Handle carefully.
Always allow accessories and work piece to cool
before handling.
Installing/Removing Accessories (Fig. C, D)
The tool features an exclusive tool‑free system for faster
accessory changes and adjustments without the need for
wrenches or hex keys like other oscillating tool systems.
1. Grasp the tool and squeeze the tool‑free accessory
clamp lever 
 4 
.
2. Clean any residual debris from the tool shaft 
the tool‑free accessory clamp holder.
3. Slide the accessory 
 10 
accessory holder 
engages all of the pins 
with the shaft.
4. Release the tool‑free accessory clamp lever.
5. Some accessories, such as scrapers and blades can
be mounted at an angle if required as shown in
Fig. D.
Attaching Accessories Using the
Universal Adapter (Fig. E)

CAUTION: To avoid injury, do not use any accessory
for an application where the adaptor may fail to hold
the accessory.

CAUTION: Read and follow all manufacturers' safety
warnings for any accessories used with this tool.

CAUTION: To avoid injury, ensure adaptor and
accessory are securely tightened.
Non‑BLACK+DECKER accessories can be attached using the
universal adaptor.
1. Place the washer 
 12 
2. Place accessory 
 9 
on to washer.
3. Tighten and secure adaptor nut 
wrench 
 14 
.
To purchase any of the following accessories, please contact
your local service center.
Part
Outer flange
Screw
Ring
Flange
Installing/Removing Sanding Sheets
(Fig. F)

Optional Accessory

A diamond shaped platen uses a hook and loop adhesion
system to attach the sanding sheets. The platen allows you to
use it on large flat surfaces and tight spots or corners.
1. Attach the sanding platen accesory as described under
Installing/Removing Accessories.
2. Align the edges on the sanding sheet with the edge
of the sanding platen and press the sanding sheet
onto the platen.
3. Firmly press the base with the sanding sheet
attached against a flat surface and briefly switch the
 9 
between the shaft and the
making sure the accessory
 11 
on the holder and is flush
on the tool.
 13 
using hex
Part number
90583886
90583887
90583888
N440293
English
 8 
and
9

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