Bosch 1943 LED User Manual

IMPORTANT: IMPORTANT : IMPORTANTE:
Read Before Using Lire avant usage Leer antes de usar

Operating/Safety Instructions
Consignes de fonctionnement/sécurité
Instrucciones de funcionamiento y seguridad

1943 LED

Consumer Information

Renseignement des consommateurs

Información para el consumidor

Toll Free Number: Appel gratuit : Número de teléfono gratuito:

1-877-BOSCH99 (1-877-267-2499) http://www.boschtools.com.

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See page 3 Voir page 10 Ver página 17

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650°C

500°C

350°C

200°C

100°C

50°C

thermo-control

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Product Data - Heat Gun

Model number 1943 LED
Identification number 0 601 943 7..

( Note: This tool is designed and sold for use with alternating current (AC) only.)

Accessory Listing

Spreader
Concentrator
Deflector
Reflector

( * = standard equipment)

Heat Gun Components

1. Nozzle 5. Temperature setting dial

2. Heat shield 6. Two position on off switch

3. Blower speed dial 7. Integral stand surfaces

4. Temperature display

WARNING! “READ ALL INSTRUC-

TIONS”. Failure to follow the SAFETY RULES
identified by the BULLET (•) symbols listed
BELOW and other safety precautions, may
result in serious personal injury. Keep these
operating instructions with this product.

Safety Instructions

for Heating Appliances

Work Area

• Keep your work area clean and well lit.

Cluttered and dark areas invite accidents.

• Do not operate heating appliance in explo­sive atmospheres, such as in the presence of
flammable liquids, gases or dust, dry grass,
leaves and paper. Heating appliances generate

high temperatures which may ignite the dust
or fumes. Combustible materials like dry grass,

leaves and paper will scorch and may catch fire.

• Keep bystanders, children and visitors
away while operating a heating appliance.

Distractions can cause you to lose control.

Electrical Safety

• Before plugging in the heating appliance,
be certain the outlet voltage supplied is com­patible with the voltage marked on the name­plate within 10%. An outlet voltage incompat-

ible with that specified on the nameplate can
result in serious hazards and damage to the
heating appliance.

• Double Insulated heating appliances are
equipped with a polarized plug (one blade is
wider than the other.) This plug will fit in a
polarized outlet only one way. If the plug
does not fit fully in the outlet, reverse the
plug. If it still does not fit, contact a qualified
electrician to install a polarized outlet. Do
not change the plug in any way. Double

Insulation eliminates the need for the three
wire grounded power cord and grounded power
supply system. Polarized plug inserted in prop­erly wired outlet insures that no voltage is
supplied to the tool when switch is “OFF”.

• When operating a heating appliance use
Ground Fault Circuit Interrupter (GFCI)
on the circuit or outlet. Don’t expose heating

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appliance to rain or wet conditions. Water en­tering a heating appliance will create an electric
shock hazard.

• Do not abuse the cord. Never use the cord
to carry the heating appliance or pull the
plug from an outlet. Keep cord away from
heat, oil, sharp edges or moving parts. Re­place damaged cords immediately. Damaged

cords create electric shock hazard.

• When operating a heating appliance with
an extension cord while outdoors, use only
extension cords marked W–A or W. These

cords are rated for outdoor use and reduce the
risk of electric shock.

Personal Safety

• Stay alert, watch what you are doing and
use COMMON SENSE when operating a
heating appliance. A moment of inattention or

use of drugs, alcohol or medication while oper­ating a heating appliance can be dangerous.

• Use safety equipment. Always wear safety
goggles. Dust mask, protective gloves, safety

shoes or non-skid shoes, must be used for
appropriate conditions.

• Avoid accidental starting. Be sure switch
is “OFF” before plugging in. Carrying the

heating appliance with your finger on the switch
or plugging in the heating appliance that has
switch “ON” invites accidents.

• Do not direct hot tip or nozzle toward cloth­ing, hands or other body parts. Intense heat
from tip or nozzle can cause serious burns or
cause clothing to ignite.

• Do not touch nozzle or shield until com­pletely cool. During use very high tempera-

tures are generated in these areas.

• Dress properly. Do not wear loose clothing
or jewelry. Contain long hair. Keep your hair,
body, clothing and gloves away from nozzle or
shield. Clothing or hair could ignite from ex­treme heat.

• Do not overreach, keep proper footing
and balance at all times. Proper footing and

balance enables better control of the heating
appliance in unexpected situations.

Tool Use and Care

• Do not use heating appliance if switch does
not turn it “ON” or “OFF”. Any tool which

cannot be controlled by the switch is dangerous.

• Disconnect the plug from the power source

before making any adjustments or changing
accessories. Such preventative safety measures

reduce the risk of starting the heating appliance
accidentally.

• Store idle heating appliance only after
adequate cooling period, indoors in high,
dry place out of the reach of children and
untrained persons. Heating appliances are dan-

gerous in the hands of untrained persons.

• Do not leave heating appliance unattended
while it is running or cooling down. Always

set tool on a flat, level surface so that nozzle tip
is directed upwards, away from supporting sur­face while running or cooling down.

• Keep a fully charged fire extinguisher close
at hand for emergency use.

Service

• Heating appliance service must be per­formed only by qualified repair personnel.

Service or maintenance performed by unquali­fied personnel may result in misplacing internal
wiring and components which could cause se­rious hazard.

Specific Safety Rules for

Heat Guns

Paint Stripping Safety Instructions

PERSONS REMOVING PAINT SHOULD
FOLLOW THESE GUIDELINES:

WARNING! This heat gun generates ex­tremely high temperatures (as high as
1100

°F). Hidden areas such as behind walls,

ceilings, floors, soffit boards and other pan­els may contain flammable materials that
could be ignited by the heat gun when work­ing in these locations. Keep the heat gun
moving in a back and forth motion, do not
linger or pause in one spot as the panel or
material behind it may ignite. The ignition of

these materials may not be readily apparent and
could result in property damage and injury to
persons.

• Use caution when operating the heat gun.

Excessive heat will generate fumes which in­haled may be dangerous to the operator.

WARNING! Use extreme care when strip­ping paint. The peelings, residue and vapors of

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paint may contain lead, which is poisonous.
Any pre-1977 paint may contain lead and paint
applied to homes prior to 1950 is likely to
contain lead. Once deposited on surfaces, hand
to mouth contact can result in the ingestion of
lead. Exposure to even low levels of lead can
cause irreversible brain and nervous system
damage; young and unborn children are par­ticularly vulnerable.

Before beginning any paint removal process
you should determine whether the paint you are
removing contains lead. This can be done by
your local health department or by a profes­sional who uses a paint analyzer to check lead
content of the paint to be removed. LEAD-

BASED PAINT SHOULD ONLY BE RE­MOVED BY A PROFESSIONAL AND
SHOULD NOT BE REMOVED USING A
HEAT GUN.

• Move the workpiece outdoors. If this is not
possible, keep the work area well ventilated.

Open the windows and put an exhaust fan in one
of them. Be sure the fan is moving the air from
inside to outside.

• Seal work areas from rest of dwelling by
sealing openings or doors with drop cloths.

Work in limited areas or one room at a time will
help to limit paint or dust contamination.

• Remove or place furnishings in center of
room then cover any carpets, rugs, furni­ture, clothing, cooking utensils and air ducts.

Place drop cloths in the work area to catch paint
chips or peelings, at the end of each work
session put the paint chips and debris in a
double plastic bag, close it with tape or twist ties
and dispose of properly.

• Do not allow children, pregnant or poten­tially pregnant women and nursing mothers
in work area until work and clean up is
complete. Certain individuals may be at risk, if

not properly protected.

• Do not eat or keep food and drink in work
area. Do not smoke or chew gum or tobacco
products in the work area. Paint residue or

dust may settle on or in food containers which
can cause the transmission of poisons to your
body.

• Wear a dust respirator mask or dual filter
(dust and fume) respirator mask which has

been approved by the Occupational Health
and Safety Administration (OSHA), the Na­tional Institute of Safety and Health (NIOSH)
or the United States Bureau of Mines. These

types of masks and replaceable filters are readily
available at major hardware stores. Be sure the
mask fits securely, beards and facial hair may
keep masks from sealing properly. Change fil­ters often. DISPOSABLE PAPER MASKS

ARE NOT ADEQUATE.

• Wear protective clothing such as extra
work shirts, overalls and hats. Paint residue

or dust may settle on your skin which may cause
the transmission of poisons to your body.

• DO NOT SWEEP, DRY DUST OR
VACUUM paint shavings, dust or peelings
during the clean up process. Clean up all

removed paint and dust by wet mopping the
floors. Use a wet cloth to clean all walls, sills
and any other surface where paint or dust is
clinging. Use a phosphate detergent or triso­dium phosphate (TSP) to wash and mop areas.

• Always remove protective clothing and
work shoes in the work area to avoid carry­ing dust into rest of the dwelling. Wash work

clothes separately. Wipe shoes off with a wet
rag that is then washed with the work clothes.
Wash hair and body including hands, arms and
face thoroughly with soap and water. Rinse
your mouth

Some dust created by

power sanding, sawing,
grinding, drilling, and other construction
activities contains chemicals known to cause
cancer, birth defects or other reproductive
harm. Some examples of these chemicals
are:

• Lead from lead-based paints,

• Crystalline silica from bricks and cement and
other masonry products, and

• Arsenic and chromium from chemically
treated lumber.

Your risk from these exposures varies, de­pending on how often you do this type of work.
To reduce your exposure to these chemicals:
work in a well ventilated area, and work with
approved safety equipment, such as those dust
masks that are specially designed to filter out
microscopic particles.

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Double Insulated Tools

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100- 155

3

205-250

5

270- 300

7

370-395

9

465-49511

515-545

13

565-595

15

1

°C

50

50

°F

120
210-310
400-480
520-570
700-740
870-920

960-1010

1050-1100

120

Operating the Tool

• Double Insulation is a design concept
used in electric power tools which eliminates
the need for the three wire grounded power cord
and grounded power supply system. It is a
recognized and approved system by
Underwriter’s Laboratories, CSA and Federal
OSHA authorities.

IMPORTANT: Servicing of a tool with

double insulation requires care and knowledge
of the system and should be performed only by
a qualified service technician. WHEN SER-

Air flow setting:

The air flow is set steplessly with air flow
blower speed dial 3. A lower air stage may be
required in certain cases, e.g. to avoid over­heating the workpiece's surroundings or to
avoid displacing the workpiece if the air flow
is too strong. A higher air stage heats up the
workpiece more quickly and enables the hot air
gun to be held at a greater distance from the
workpiece.

VICE IS REQUIRED USE ONLY IDENTI­CAL REPLACEMENT PARTS.

POLARIZED PLUGS: If your tool is equipped
with a polarized plug (one blade is wider than
the other), this plug will fit in a polarized outlet

ON/OFF switch

I

(Cool air stage) 8.8 CFM ª120ºF.

For cooling down a hot workpiece or for drying
paint.

only one way. If the plug does not fit fully in the

II

outlet, reverse the plug. If it still does not fit,

(Hot air stage) 17.8 CFM ª1100ºF.
contact a qualified electrician to install the
proper outlet. To reduce the risk of electric
shock do not change the plug in any way.

Temperature control (thermo-electronic):
The temperature can be controlled steplessly

with the setting dial 5 and switch 6 in setting II.

Thermo-electronic

Extension Cords

• Replace damaged cords immediately. Use of
damaged cords can shock, burn or electrocute.

• If an extension cord is necessary, a cord with
adequate size conductors should be used to
prevent excessive voltage drop, loss of power
or overheating. The table below shows the
correct size to use, depending on cord length
and amperage rating on the tool’s nameplate. If
in doubt, use the next heavier gauge. Always
use U.L. and CSA listed extension cords.

Ampere Rating (shown on nameplate)

0- 2.1- 3.5- 5.1- 7.1- 12.1-

2.0 3.4 5.0 7.0 12.0 16.0

25' 18 18 18 18 16 14
50' 18 18 16 16 14 12

75' 18 18 16 14 12 10
100' 18 16 14 12 10
150' 16 14 12 12 Wire Gauge

Cord Length

Note: The smaller the gauge number, the larger

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the wire is in the cord.

"SAVE THESE INSTRUCTIONS"

If the nozzle is hot or if you wish to have both
hands free when working, you can set the tool
down in an upright position on its base.

Temperature displays:

The temperature is displayed via LED 4. By
carefully controlling the air flow and tempera­ture, very precise work can be performed on
temperature sensitive electrical fittings, pack­aging, and other materials.

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The ideal temperature should first be ascer­tained by performing a test. You should there­fore start with a low temperature setting. The
temperatures specified in the illustrated ex­amples of use are recommended values which
can vary depending on the properties of the
workpiece. The distance between the nozzle
and workpiece is dependent on the material to
be processed. Additional information can be
found in popular DIY books or consult the
manufacturer of the heat activated product.

NOTE: The 1100ºF(595ºC) setting can not be
reached on full air flow setting. If 1100ºF(595ºC)
is required, reduce setting on blower speed dial
3 until 1100ºF(595ºC) is indicated on LED
temperature display 4.

Bosch stocks a range of accessories (see cata­log) which offer a wide range of other applica­tions.

The sections indicated by capital letters in the
instructions for use below refer to the illustrated
examples of use in this manual.

A

Removing paint/dissolving adhesives
Fit the flat nozzle. Soften the paint using hot air

and remove evenly using a scraper. Do not heat
the paint for too long since this will burn the
paint, making it more difficult to remove. To
carry out work in confined spaces, remove the
heat shield. Many adhesives (e.g. stickers) be­come softer when heated, allowing adhesive
bonds to be separated and adhesive to be re­moved.

D

Defrosting water pipes

Fit the reflector nozzle. Always heat the frozen
area inwards from the edge to the center.

CAUTION! Do not attempt to defrost PVC
piping.

Note: Water pipes are often difficult to distin­guish from gas pipes. Copper pipes are joined
using tin and should therefore not be heated
above 392ºF (200ºC).

B

Removing paint or caulking from

windows

Glass can break easily. Always use the glass
deflector nozzle. On profiled surfaces, paint
can be removed using a scraper and brushed off
using a soft wire brush.

C

Shrink fitting electrical connections

Fit the reflector or reducing nozzle. Select a
heat-shrinkable sleeve with a diameter match­ing that of the workpiece, e.g. cable lug. Heat
the heat-shrinkable sleeve evenly.

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Maintenance and Service

WARNING! Preventive maintenance per-

formed 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 at a
Bosch Factory Service Center.

Tool Lubrication

Your Bosch tool has been properly lubricated
and is ready for use. We recommend, that tools
with gears be regreased with a special gear
lubricant every time the brushes are changed.

Carbon Brushes

The brushes and commutator in your Bosch
tool have been engineered for many hours of
dependable service. To maintain peak effi­ciency of the motor, we recommend that every
two to six months the brushes be examined.
Only genuine Bosch replacement brushes spe­cially designed for your tool should be used.

Bearings

After about 300-400 hours of operation, or at
every second brush change, the bearings should

be replaced at a Bosch Factory Service Center.
Bearings which become noisy (due to heavy
load or very abrasive material cutting) should
be replaced at once to avoid overheating and
motor failure.

Cleaning

WARNING! To avoid accidents, always

disconnect the tool from the power supply
before cleaning or performing any maintenance.
The tool may be cleaned most effectively with
compressed 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 openings.

CAUTION! Certain cleaning agents and

solvents damage plastic parts. Some of these
are: gasoline, carbon tetrachloride, chlorinated
cleaning solvents, ammonia and household
detergents that contain ammonia.

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