Drill Master 68420 Assembly instructions

Battery pack sold separately.
Visit our website at: http://www.harborfreight.com
Email our technical support at: [email protected]
Owner’s Manual & Safety Instructions
Save This Manual Keep this manual for the safety warnings and precautions, assembly,
operating, inspection, maintenance and cleaning procedures. Write the product’s serial number in the
back of the manual near the assembly diagram (or month and year of purchase if product has no number).
Keep this manual and the receipt in a safe and dry place for future reference.
When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
please call 1-888-866-5797 as soon as possible.
Copyright©2013 by Harbor Freight Tools®. All rights reserved.
No portion of this manual or any artwork contained herein may be reproduced in
any shape or form without the express written consent of Harbor Freight Tools.
Diagrams within this manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product described herein.
Tools required for assembly and service may not be included.
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.
REV 15f

Page 2 For technical questions, please call 1-888-866-5797. Item 68420
WARNING SYMBOLS AND DEFINITIONS
This is the safety alert symbol. It is used to alert you to
potential personal injury hazards. Obey all safety messages
that follow this symbol to avoid possible injury or death.
Indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
Addresses practices not related to personal injury.
IMPORTANT SAFETY INFORMATION
Charger Safety Warnings
Read all safety warnings and all instructions.
Failure to follow the warnings and instructions may result in electric shock, fire and/or serious injury.
Save all warnings and instructions for future reference.
The warnings, precautions, and instructions discussed in this instruction
manual cannot cover all possible conditions and situations that may occur.
It must be understood by the operator that common sense and caution are factors
which cannot be built into this product, but must be supplied by the operator.
1. The battery Charger gets hot
during use. The Charger’s heat
can build up to unsafe levels and
create a fire hazard if it does not
receive adequate ventilation, due to an
electrical fault, or if it is used in a
hot environment. Do not place the Charger on
a flammable surface. Do not obstruct any
vents on the Charger. Especially avoid
placing the Charger on carpets and rugs;
they are not only flammable, but they also
obstruct vents under the Charger.
Place the Charger on a stable, solid,
nonflammable surface (such as a stable metal
workbench or concrete floor) at least 1 foot
away from all flammable objects, such as
drapes or walls. Keep a fire extinguisher and
a smoke detector in the area.
Frequently monitor the Charger and
Battery Pack while charging.
2. Charge only designated battery packs;
others may overheat, leak, or burst.
3. Follow charging instructions.
4. Do not insert damaged battery pack.
5. Check frequently while charging.
6. Wear ANSI-approved
safety goggles during use.
7. Use chargers only with specifically
designated battery packs.
Use of any other battery packs may
create a risk of injury and fire.

Page 3For technical questions, please call 1-888-866-5797.Item 68420
8. When battery pack is not in use,
keep it away from other metal objects,
like paper clips, coins, keys, nails, screws
or other small metal objects, that can
make a connection from one terminal to
another. Shorting the battery pack terminals
together may cause burns or a fire.
9. Under abusive conditions, liquid may
be ejected from the battery pack;
avoid contact. If contact accidentally
occurs, flush with water. If liquid
contacts eyes, additionally seek
medical help. Liquid ejected from the
battery pack may cause irritation or burns.
10. Do not expose chargers to rain or
wet conditions. Water entering a
Charger will increase the risk of
electric shock. Charge indoors only.
11. Keep charging area clean and well lit.
Cluttered or dark areas invite accidents.
12. Do not operate chargers in explosive
atmospheres, such as in the presence
of flammable liquids, gases or dust.
Chargers create sparks which
may ignite the dust or fumes.
13. Charger plugs must match the outlet.
Never modify the plug in any way.
Unmodified plugs and matching outlets
will reduce risk of electric shock.
14. Do not abuse the cord. Never use the cord for
carrying, pulling or unplugging the Charger.
Keep cord away from heat, oil, sharp edges
or moving parts. Damaged or entangled
cords increase the risk of electric shock.
15. Store idle chargers out of the reach
of children and do not allow persons
unfamiliar with the Charger or these
instructions to operate the Charger.
16. Maintain chargers. Check for breakage
of parts and any other condition that may
affect the Charger’s operation. If damaged,
have the Charger repaired before use.
17. Have your Charger serviced by a qualified
repair person using only identical
replacement parts. This will ensure that
the safety of the Charger is maintained.
18. Inspect before every use; do not use
if parts are loose or damaged.
19. Use as intended only.
20. Unplug after use and before
service, cleaning or storage.
21. Maintain labels and nameplates on the
Charger. These carry important safety
information. If unreadable or missing, contact
Harbor Freight Tools for a replacement.
22. This product is not a toy.
Keep it out of reach of children.
23. People with pacemakers should consult their
physician(s) before use. Electromagnetic
fields in close proximity to heart pacemaker
could cause pacemaker interference or
pacemaker failure. In addition, people
with pacemakers should properly maintain
and inspect to avoid electrical shock.
24. WARNING: The cord of this product contains
lead and/or di (2-ethylhexyl) phthalate
(DEHP), chemicals known to the State of
California to cause cancer, and birth defects
or other reproductive harm. Wash hands after
handling. (California Health & Safety Code
§ 25249.5, et seq.)
SAVE THESE INSTRUCTIONS.

Page 4 For technical questions, please call 1-888-866-5797. Item 68420
Grounding
TO PREVENT ELECTRIC SHOCK AND DEATH FROM INCORRECT GROUNDING:
Check with a qualified electrician if you are in doubt as to whether the outlet is
properly grounded. Do not modify the power cord plug provided with the charger.
Do not use the charger if the power cord or plug is damaged. If damaged, have it
repaired by a service facility before use. If the plug will not fit the outlet, have a proper outlet
installed by a qualified electrician.
Extension Cords
Note: Extension cords must not be used with this Charger.
Symbology
Double Insulated
Canadian Standards Association
Underwriters Laboratories, Inc.
VVolts
~Alternating Current
AAmperes
WARNING marking concerning
Risk of Eye Injury.
Wear ANSI-approved safety
goggles with side shields.
Read the manual before
set-up and/or use.
WARNING marking concerning
Risk of Fire.
Do not cover Charger
ventilation ducts.
Charge on fireproof surface only.
WARNING marking concerning
Risk of Electric Shock.
Properly connect Charger’s power
cord to appropriate outlet.
WARNING marking concerning
Risk of Explosion.
Do not puncture, short, or open
battery packs and do not charge
damaged battery packs.

Page 5For technical questions, please call 1-888-866-5797.Item 68420
Specifications
Electrical Rating 120VAC / 60Hz
Adapter Output 27VDC / 200mA
Charge Time 3-5 hours
Compatible
Batteries
18V, NiCd / NiMH
drillmaster®brand battery packs
Base
Adapter
Battery
(sold
separately)
Green LED
Red LED
Figure A: Charger Setup

Page 6 For technical questions, please call 1-888-866-5797. Item 68420
Operating Instructions
Read the ENTIRE IMPORTANT SAFETY INFORMATION section
at the beginning of this manual including all text under
subheadings therein before set up or use of this product.
1. Place the Battery Pack on a dry
fireproof surface in a room where the
temperature is from 50–104° F.
Note: If recharging a newly spent Battery Pack,
allow it to cool completely before charging.
2. Examine the Battery Pack.
It must be undamaged, and an
18V, NiCd or NiMH type Battery Pack.
Do not charge a cracked, open, or
leaking Battery Pack, or charge a
non-recommended type of Battery Pack.
3. The Battery Pack’s terminals are
designed to fit this Charger specifically.
If the Battery Pack does to not fit the Charger
properly, do not try to insert it. Do not
force a Battery Pack into the Charger.
4. Plug the Power Supply into a grounded,
120VAC, 60Hz receptacle.
5. Connect the Power Supply to the Charger.
6. Slide the Battery Pack onto the Charger.
Note: The Battery Pack’s capacity will increase
somewhat during the first few charging
cycles. A fully discharged Battery Pack will
take about 3-5 hours to fully charge.
7. While charging, the Battery Pack,
Charger, and Power Supply may become
warm to the touch. This is normal,
and does not indicate a problem.
8. The red LED will light continuously when
the Battery Pack is charging. The green
LED will light when the battery is charged.
Unplug the Charger and disconnect it
from the Battery Pack when finished.
CAUTION! The Battery Charger needs
to be disconnected when charging is
finished to prevent overcharging.
9. Allow the Battery Pack to cool
completely before using it.
10. Press the Battery Button to release
Battery Pack from the Charger.

Page 7For technical questions, please call 1-888-866-5797.Item 68420
Maintenance and Servicing
Procedures not specifically explained in this manual must
be performed only by a qualified technician.
TO PREVENT SERIOUS INJURY FROM ACCIDENTAL OPERATION:
Remove the Battery Pack and unplug the charger before performing
any inspection, maintenance, or cleaning procedures.
TO PREVENT SERIOUS INJURY FROM TOOL FAILURE:
Do not use damaged equipment.
If damage is noted, have the problem corrected before further use.
1. BEFORE EACH USE, inspect the general
condition of the charger. Check for:
• loose hardware,
• misalignment or binding of moving parts,
• cracked or broken parts,
• damaged electrical wiring, and
• any other condition that may
affect its safe operation.
2. AFTER USE, wipe external surfaces
of the charger with clean cloth.
3. NiCd BATTERIES MUST BE RECYCLED OR
DISPOSED OF PROPERLY.
Do not short, incinerate or open batteries.
4. Disconnect Battery Pack and store
Charger and any Battery Packs in
a dry, indoor area out of reach of
children and away from metal objects
(i.e., paperclips, coins) to prevent shorting.
WARNING! TO PREVENT SERIOUS INJURY
AND DEATH FROM ELECTRIC SHOCK:
Do not open Base or Adapter.
Do not service internal parts.
Record Product’s Serial Number Here:
Note: If product has no serial number, record month and year of purchase instead.
Note: Replacement parts are not available for this item.

3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • 1-888-866-5797
Limited 90 Day Warranty
Harbor Freight Tools Co. makes every effort to assure that its products meet high quality
and durability standards, and warrants to the original purchaser that this product is free from
defects in materials and workmanship for the period of 90 days from the date of purchase. This
warranty does not apply to damage due directly or indirectly, to misuse, abuse, negligence or
accidents, repairs or alterations outside our facilities, criminal activity, improper installation,
normal wear and tear, or to lack of maintenance. We shall in no event be liable for death,
injuries to persons or property, or for incidental, contingent, special or consequential damages
arising from the use of our product. Some states do not allow the exclusion or limitation of
incidental or consequential damages, so the above limitation of exclusion may not apply to
you. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS
OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS.
To take advantage of this warranty, the product or part must be returned to us with
transportation charges prepaid. Proof of purchase date and an explanation of the complaint
must accompany the merchandise. If our inspection verifies the defect, we will either repair or
replace the product at our election or we may elect to refund the purchase price if we cannot
readily and quickly provide you with a replacement. We will return repaired products at our
expense, but if we determine there is no defect, or that the defect resulted from causes not
within the scope of our warranty, then you must bear the cost of returning the product.
This warranty gives you specific legal rights and you may also
have other rights which vary from state to state.