Kamasa-TOOLS K 10640 User manual

K 10640
Cordless
angle
grinder

2
SAFETY AND PRECAUTION
1 Consider the work area environment. Do not expose the tool to rain. Do not
use the tool in damp or wet locations – Keep work area clean and well lit. Do
not use the tool in the present of flammable liquids or gases.
2 Guard against electric shock. Avoid body contact with earthed or grounded
surfaces.
3 Keep children away. Do not let visitors touch the tool. All visitors should be
kept away from work area.
4 When not in use, the tool should be stored in a dry locked up place, out of
reach of children.
5 Do not force the tool. It will do the job better and safer at the rate for which
it was intended.
6 Stay alert. Watch out what you are doing–Use common sense. Do not oper-
ate tool when you are tired. Check damaged parts. Before further use of the
tool, if a guard or other part is damaged it should be carefully checked to
determine that it will operate properly and perform its intended function.
7 Check for alignment of moving parts, blinding of moving parts, breakage of
parts, mounting and any other condition that may aect its operation.
8 A guard or other parts that is damaged should be properly repaired or
replaced by an authorized service center unless otherwise indicated in this in-
struction manual. Have defective switches replaced by an authorized service
center. Do not use the tool if switch does not turn it on.
9 To ensure the designed operational integrity of power tools, do not remove
installed cover or screws.
10 Use your tool at lower input than specified on the nameplate, otherwise, the
finish may be spoiled and working eciency reduced by motor overload.
11 Do not wipe plastic parts with solvent. Solvents such as gasoline, thinner,
benzene, carbon tetrachloride, alcohol, ammonia and oil containing chloric
annex may damage and crack plastic parts. Wipe plastic parts with a soft
cloth lightly dampened with soap water.
12 Dress properly. Do not wear loose clothing or jewellery. Keep your hair,
clothing, and gloves away from moving parts.
13 Use safety equipment. Always wear eye protection, non-skid safety shoes,
and hearing protection.
14 Do not overreach. Proper footing and balance enables better control of the
tool in unexpected situations.

3
PRODUCT SAFETY INSTRUCTIONS
1 Disconnect battery pack from tool or place the main switch in the locked or
o position before making any adjustments, changing accessories, or storing
the tool. Such preventative safety measures reduce the risk of starting the
tool accidentally.
2 In case of cup-wheels, cones or plugs with a threaded hole intended to be
mounted on the machine spindle, critical dimensions and other data shall be
given in order to prevent the spindle end from touching the bottom of the
hole of the abrasive product.
3 Check that speed marked on the grinding wheel is equal to or greater than
the rated speed of the grinder.
4 Ensure that the grinding wheel dimensions are compatible with the grinder.
5 Abrasive wheels shall be stored and handled with care in accordance with
manufacturer’s instructions.
6 Inspect the grinding wheel before use, do not use chipped, cracked or other-
wise defective products.
7 Ensure that mounted wheels and points are fitted in accordance with the
manufacturer’s instructions.
8 Ensure that blotters are used when they are provided with the bonded abra-
sive product and when they are required.
9 Ensure that the abrasive product is correctly mounted and tightened before
use and run the tool at no-load for 15 s in a safe position, stop immediately if
there is considerable vibration or if other defects are detected. If this condi-
tion occurs, check the machine to determine the cause.
10 If a guard is supplied with the tool never use the tool without such a guard.
11 Do not use separate reducing bushings or adapters to adapt large hole abra-
sive wheels.
12 For tools intended to be fitted with threaded hole wheel, ensure that the
thread in the grinding wheel is long enough to accept the spindle length.
13 Check that the work piece is properly supported.
14 Do not use cutting o grinding wheel for side grinding.
15 Ensure that sparks resulting from use do not create a hazard e.g. do not hit
persons, or ignite flammable substances.
16 Ensure that ventilation openings are kept clear when working in dusty
conditions. If it should become necessary to clear dust, first disconnect the
tool from the mains supply(use non metallic objects) and avoid damaging
internal parts.
17 Always use eye and ear protection.
18 Personal protective equipment such as dust mask, gloves, helmet and apron
should be worn.
19 The grinding wheel continues to rotate after the tool is switched o.

4
IMPORTANT SAFETY INSTRUCTIONS
FOR CHARGER & BATTERY PACK
1 Caution: To reduce risk of injury, charge only specific type rechargeable
battery packs. Other types of battery packs may burst causing personal
injury and damage.
2 Before using charger, read all instructions and cautionary markings
on battery packs and chargers.
3 Do not expose charger to rain or snow.
4 To reduce the risk of damage to electric plug and cord, pull by plug rather
than cord when disconnecting charger.
5 Use of an attachment not recommended or sold by the charger manufacture
may result in a risk of fire, electric shock, or injury to persons.
6 Make sure cord is located so that it will not be stepped on, tripped on,
tripped over, or otherwise subjected damage or stress.
7 Do not operate charger with damaged cord or plug.
Replace them immediately.
8 Do not operate charger if it has received a sharp blow, been dropped,
or otherwise damage in any way, take it to qualified center.
9 To reduce risk of electric shock, unplug charger from outlet before
attempting any maintenance or cleaning. Turning o controls will not
reduce this risk.
10 Do not disassemble charger or battery pack, take it to a qualified service
center while repair is required. Incorrect reassembling may result in a risk
of electric shock or fire.

5
ADDITIONAL SAFETY RULES FOR
CHARGER & BATTERY PACK
1 Do not charge battery pack when temperature is below 10°C (50°F) or above
40°C (104°F).
2 Do not attempt to use a set-up transformer, an engine generator or DC
power receptacle.
3 Do not allow anything to cover or clog the charger vents.
4 Always cover the battery pack terminals with the battery pack cover when
the battery pack is not used.
5 Do not short circuit the battery pack.
6 Do not touch the terminals with any conductive material.
7 Avoid storing battery pack in a container with other metal objects such as
nails, coins, etc.
8 Do not expose battery pack to water or rain, a battery pack short can use
large current flow, overheating, possible burns and even a breakdown.
9 Do not store the machine and battery pack in locations where the tempera-
ture may reach or exceed 50°C (122°F)
10 10 Do not incinerate the battery pack even if it is severely damaged or com-
pletely worn out. The battery pack can explode in a fire.
11 Be careful not to drop, shake or strike battery pack.
12 Do not charge inside a box or container of any kind. The battery pack must
be placed in a well ventilated area during charging.
13 Do not leave batteries unused for extended period of time. Recharge the
battery every 3–6 months and bring Li-Ion battery to 40–80% charge level
before storage.
14 Li-Ion batteries are sensitive to high temperature and should be kept in a
cool, dry and out of direct light exposure. Ideal temperature for operation
and storage is below 25°C (77°F).
15 This product is designed with low voltage protection, which prevents the tool
from over discharging and prolong battery’s life span.

6
PRODUCT SPECIFICATION
Model No. K 10640
Voltage 18V DC
No load speed 7000 rpm
Wheel size 125 mm (5”)
Total weight 2.35 kg
Charging time 1 hour auto cut o
MAJOR COMPONENTS
Switch fixity
Handle
Battery knob
Battery pack
Main switch
Grinding
wheel
Wheel cover
Battery charger
K 10258
Key

7
OPERATING INSTRUCTIONS
Installing or removing battery pack (See Fig.1 Fig.2)
Always switch o the machine before insertion
or removal of the battery pack.
1 To remove the battery pack, push the button on
the battery pack and pull the tool unit from the
battery pack.
2 To insert the battery pack, align the tool unit
slides with the battery pack sliding groove and
push the tool unit into place. The tool unit can
be slipped into the battery pack in two direc-
tions.
3 Do not force the battery pack in sliding it into
tool unit. If the battery pack does not slide in
easily, it is not being inserted correctly.
Charging the Battery Pack (See Fig.3)
1 Plug the fast charger into the power source.
2 Slide the battery pack into the charger as the ar-
row direction shown on the charger.
3 Push the battery pack into place and make sure
the red light on the charger is “ON”. The battery
pack is now starting the charging cycle.
4 After finish the charging cycle, the light will turn to green. The battery pack is
now ready for use.
5 Your new battery pack is not charged. You need to charge it before use.
6 Always use the specified charger to charge the battery. When the battery
pack is inserted into the charger correctly, the red light will come on and
charging will begin.
7 When you charge a new battery pack or a battery pack which has not been
used for a long period, it may not accept a full charge. This is a normal condi-
tion and does not indicate a problem. You can recharge the battery pack fully
after discharging it completely a couple of times.
8 Unplug the charger from the power source after finish the charge.
9 Please remove the battery from the unplugged charger for storage.
Fig 3
Fig 2
Fig 1

8
LED LIGHT ON THE CHARGER
Power On (Green light flashes slowly)
Battery low (Red light stays illuminated)
Battery charged 80% (Green light flashes rapidly)
Battery charged 100% (Green light stays illuminated)
Battery pack temperature is too hot or too cold (Red light flashes slowly)
Battery pack malfunction (Red and Green lights stay illuminated)
1 Charger shall be plugged into a 100-240V a.c outlet only.
2 If the battery pack is too hot or too cold, the charger will not fast charge the
battery pack and the red Indicator light is “blinking”. When the battery pack
temperature returns to between 0°C and 50°C, The charger will automati-
cally begin charging.
3 If both red and green indicator lights are “ON” the battery pack either does
not comply or is defective. Please contact your retailer.
4 Do not charge the battery pack in rain, snow or high temperature environ-
ment.
5 Do not charge battery pack when temperature is below 10°C(50°F)or above
40°C(104°F).
6 While charge the cool battery pack (below 5°C) in the warm indoor, keep the
battery pack in the room for one hour to warm up before starting the battery
pack. A cool battery may charge unsaturated.
7 Remove the plug after finishing the charge.
8 The charger should be cooled at least one hour after continue charging three
times.
9 Do not use generator for charging the battery pack.

9
OPERATION INSTRUCTIONS
Switch fixity
For safety concern, push the switch fixity forward,
then press main switch upward to operate the tool.
Switch fixity
Installing the grinding wheel
Release the lock nut by
pressing the lock button.
(Use key if not able to release
by hand)
Place the grinding wheel on
the wheel washer.
Tighten the lock nut by hand.
Main switch
Lock nut
Wheel washer
Lock button
Grinding
wheel
Lock nut

10
Key
Screw hole
Wheel cover
Lock button
Handle
Press the lock button after
tighten the lock nut. Use the
key to tighten the lock nut.
Before using the tool, ensure
that the lock button is fully
released.
Installing the handle
Install the handle to the front
cover screw hole.
Adjust the wheel cover
Release the adjust screw to
adjust the location of the
wheel cover. Tighten the
screw after moving.
Adjust handle

11
Pos. Stock No. Parts name Qt
1 Front cover screw 4
2 K 10642 Front cover gearbox ass´y 1
3 Bush 1
4 Motor screw 2
5 Motor fixity 1
6 K10643 Motor 1
7 Grindstone sheath 1
8 Grindstone gasket 1
9 Grindstone nut 1
10 Handle 1
11 Housing screw 6
12 Housing lable (R) 1
13 Housing ass´y 1
14 Trigger ass´y 1
15 K 10645 Main switch 1
16 Trigger lever 1
PARTS LIST
Pos. Stock No. Parts name Qt
17 K 10644 Trigger lever 1
18 Wire 1
19 Wire 1
20 Wire 1
21 K 10646 Discharge protector 1
22 Trigger pin 1
23 Battery connector 1
24 Battery pack 1
25 Fuel gauge lable 1
26 Battery lable 1
27 K 10647 Key 1
28 Charger upper lable 1
29 Charger 1
30 Charger lower lable 1
31 Power cord 1
32 Housing lable (L) 1

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K 10640