Maintenance - Bosch 1644-24 Operating/Safety Instructions Manual

BM 2610917685 9-02 9/23/02
Service
NO USER SERVICE-ABLE
! WARNING
PARTS INSIDE. Preventive
maintenance performed by unauthorized
personnel may result in misplacing of
internal wires and components which
could cause serious hazard. We recom-
mend that all tool service be performed by a
Bosch Factory Service Center or Authorized
Bosch Service Station. SERVICEMEN:
Disconnect tool and/or charger from power
source before servicing.
BATTERIES
Be alert for battery packs that are nearing
their end of life. Battery packs typically last
from 500 to 1000 charges. If you notice
decreased tool performance or significantly
shorter running time between charges then it
is time to replace the battery pack. Failure
to do so can cause the tool to operate
improperly or damage the charger.
Long term battery storage should be in
the discharged state. Battery packs last
longer and re-charge better when they are
stored discharged. Remember to fully re-
charge battery packs before using after
prolonged storage.
TOOL LUBRICATION
Your Bosch tool has been properly
lubricated and is ready for use.
If an extension cord is
WARNING
!
necessary, a cord with
adequate size conductors that is capable
of carrying the current necessary for your
tool must be used. This will prevent
excessive voltage drop, loss of power or
overheating. Grounded tools must use 3-
wire extension cords that have 3-prong
plugs and receptacles.
NOTE: The smaller the gauge number, the
heavier the cord.
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Maintenance

D.C. MOTORS
The motor in your tool has been engineered
for many hours of dependable service. To
maintain peak efficiency of the motor, we
recommend it be examined every six
months. Only a genuine Bosch replacement
motor specially designed for your tool
should be used.
Bearings which become noisy (due to heavy
load or very abrasive material cutting) should
be replaced at once to avoid overheating and
motor failure.
WARNING
!
charger from the power supply before
cleaning. The tool may be cleaned most
effectively with compressed dry air. Always
wear safety goggles when cleaning tools
with compressed air.
Ventilation openings and switch levers must
be kept clean and free of foreign matter. Do
not attempt to clean by inserting pointed
objects through opening.
! CAUTION
parts. Some of these are: gasoline, carbon
tetrachloride, chlorinated cleaning solvents,
ammonia and household detergents that
contain ammonia.
Accessories
RECOMMENDED SIZES OF EXTENSION CORDS
120 VOLT ALTERNATING CURRENT TOOLS
Cord Size in A.W.G.
Tool's
Ampere
Rating Cord Length in Feet
25
3-6 18
6-8 18
8-10 18
10-12 16
12-16 14
-12-
BEARINGS
Cleaning
To avoid accidents, always
disconnect the tool and/or
Certain cleaning agents and
solvents damage plastic
2
Wire Sizes in mm
Cord Length in Meters
50 100 150 15 30 60 120
16 16 14 .75 .75 1.5 2.5
16 14 12 .75 1.0 2.5 4.0
16 14 12 .75 1.0 2.5 4.0
16 14 12 1.0 2.5 4.0 —
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