Dremel 770 Power Hammer User Manual


 
Page 16
Service
NO USER SERVICEABLE PARTS
INSIDE. Preventive maintenance
performed by unauthorized personnel may result in
misplacing of internal wires and components which
could cause serious hazard. We recommend that all
tool service be performed by a Dremel Service Facility.
SERVICEMEN: Disconnect tool and/or charger from
power source before servicing.
D.C. motors
The motor in your tool has been engineered for many
hours of dependable service. To maintain peak efficien-
cy of the motor, we recommend it be examined every
six months. Only a genuine Dremel replacement motor
specially designed for your tool should be used.
Cleaning
To avoid accidents, always dis-
connect the tool and/or 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.
Certain cleaning agents and sol-
vents damage plastic parts. Some
of these are: gasoline, carbon tetrachloride, chlorinated
cleaning solvents, ammonia and household detergents
that contain ammonia.
Extension Cords
If an extension cord is necessary,
a cord with adequate size conduc-
tors 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.
RECOMMENDED SIZES OF EXTENSION CORDS
120 VOLT ALTERNATING CURRENT TOOLS
NOTE: The smaller the gauge number, the heavier the
cord.
!
WARNING
!
WARNING
!
CAUTION
Maintenance
T
ool’s
Ampere
Rating
Cord Size in A.W.G.
Wire Sizes in mm
2
3-6
6-8
8-10
10-12
12-16
18 16 16 14 .75 .75 1.5 2.5
18 16 14 12 .75 1.0 2.5 4.0
18 16 14 12 .75 1.0 2.5 4.0
16 16 14 12 1.0 2.5 4.0
14 12
25 50 100 150 15 30 60 120
Cord Length in Feet Cord Length in Meters
!
WARNING
DM 2610925743 02-05 2/7/05 9:34 AM Page 16