BOSCH 20-63 GHG Professional Heavy Duty Heat Gun Instruction Manual

GHG Professional 20-63 | 23-66
Original instructions

20-63 GHG Professional Heavy Duty Heat Gun

Safety instructions

Read all the safety information and instruc tions. Failure to observe the safety information and follow instructions may result in electric shock, fire and/or serious injury.

Save all warnings and instructions for future reference.

▶ This heat gun is not intended foruse by children or persons withphysical, sensory or mental limita-tions or a lack of experience orknowledge. This heat gun can beused by children aged 8 or olderand by persons who have physical,sensory or mental limitations or alack of experience or knowledge ifa person responsible for theirsafety supervises them or has in-structed them in the safe opera-tion of the heat gun and they un-derstand the associated dangers. Otherwise there is a risk of operatingerrors and injury.
▶ Supervise children during use,cleaning and maintenance. This willensure that children do not play withthe heat gun.
▶ Handle the power tool with care.
The power tool produces intense heat which increases the risk of fire and explosion.
▶ Take particular care when working in the vicinity of flammable materials. The hot airflow or hot nozzle may ignite dust or gases.
▶ Do not work with the power tool in potentially explosive areas.
▶Do not aim the hot airflow at the same area for prolonged periods. Working with plastic, paint, varnish or similar materials may produce easily flammable gases.
▶  Please be aware that heat is directed to covered flammable materials, which may ignite.
▶ Safely place the heat gun on the storage surfaces after use and let it cool completely before packing it away. The hot nozzle can cause damage.
▶ Do not let children use the heat gun unsupervised when it is switched on.
▶ Store idle heat guns out of the reach of children. Do not allow persons unfamiliar with the heat gun or these instructions to operate the tool. Heat guns can be dangerous in the hands of untrained users.
▶Do not expose the heat gun to rain or wet conditions.Water entering a heat gun increases the risk of electric shock.
▶Do not misuse the cable, for example by using it to carry, hang up or unplug the heat gun. Keep the cable away from heat and oil. Damaged or entangled cords increase the risk of electric shock.
▶Always wear safety goggles. Safety goggles reduce the risk of injury.
▶ Pull the plug out of the socket before adjusting the tool settings, changing accessories, or storing the heat gun. This safety measure prevents the heat gun from being started accidentally.
▶Always check the heat gun, cable, and plug before use. Stop using the heat gun if you discover any damage.
Do not open the heat gun yourself, and have it repaired only by a qualified specialist using only original replacement parts. Damaged heat guns, cables, and plugs increase the risk of electric shock.

Keep your work area well-ventilated. The gas and steam produced during work are often harmful to one’s health.
▶ Wear protective gloves and do not touch the nozzle while it is hot. There is a risk of burns.
▶ Do not direct the airflow at persons or animals.
▶ Do not use the heat gun as a hair dryer. The outgoing airflow is considerably hotter than that of a hair dryer.
▶ Do not allow foreign objects to enter the heat gun.
▶ The distance between the nozzle and the workpiece depends on the material you are working on (metal, plastic, etc.) and the intended working method. Always test the amount of air and temperature first.
▶ If operating the heat gun in a damp environment is unavoidable, use a residual current device (RCD). The use of an RCD reduces the risk of electric shock.
▶ Never use the heat gun if the cable is damaged. Do not touch the damaged cable and pull out the mains plug if the cable is damaged while working. Damaged cables increase the risk of an electric shock.

Products sold in GB only:
Your product is fitted with an BS 1363/A approved electric plug with internal fuse (ASTA approved to BS 1362).
If the plug is not suitable for your socket outlets, it should be cut off and an appropriate plug fitted in its place by an au-thorised customer service agent. The replacement plug should have the same fuse rating as the original plug.
The severed plug must be disposed of to avoid a possible shock hazard and should never be inserted into a mains socket elsewhere.

Product Description and Specifications

Please observe the illustrations at the beginning of this operating manual.

Intended Use
The power tool is intended for bending and welding plastic, stripping coats of paint and heating shrink tubing. It is also suitable for soldering and tinning, melting adhesive bonding and thawing water pipes.
The power tool is intended to be operated by hand, under supervision.

Product Features
The numbering of the product features refers to the diagram of the power tool on the graphics page.

(1) Nozzle

(2) Heat shield, removable

(3) Storage surface

(4) On/off switch and power settings

(5) Memory preset

(6) Temperature

(7) Thermal protection shutdown

(8) Fan symbol

(9) Airflow

(10) Fan button

(11) Memory button

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(12) +/– button

(13) Display

(14) Surface nozzle A)

(15) Glass protection nozzle A)

(16) Angle nozzle A)

(17) Reflector nozzle A)

(18) Welding wire A)

(19) Welding shoe A)

(20) Reducing nozzle A)

(21) Heat shrink plastic tube A)

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A) Accessories shown or described are not included with the product as standard. You can find the complete selection of accessories in our accessories range.

Technical Data

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A) Maximum possible input power

B) At an ambient temperature of approx. 20 °C

C) The display may go blank if outside the operating temperature.

The specifications apply to a rated voltage [U] of 230 V. These specifications may vary at different voltages and in country-specific models.

Noise/vibration information
Typically, the A-weighted sound pressure level of the power tool is less than 70 dB(A).
Vibration total values ah (triax vector sum) and uncertainty K: ah ≤2.5 m/s², K=1.5 m/s².

Operation

Starting Operation
▶ Pay attention to the mains voltage. The voltage of the power source must match the voltage specified on the rating plate of the power tool.

Creation of Smoke During Initial Use

A coating protects the metal surfaces from corrosion exworks. This protective layer evaporates during initial use.

Switching On

Slide the on/off switch (4) upwards.

Thermal protection shutdown: If the power tool overheats (e.g. due to a build-up of air), the heating system will automatically switch off, though the blower will continue to run.

Once the power tool has cooled back down to its operating temperature, the heating system will automatically switch on again.

Switching Off

Slide the on/off switch (4) downwards into the 0 position.

▶ After working at high temperatures for a prolonged period, let the power tool cool down before switching it off. To do this, allow it to run on the lowest temperature setting for a short while.

Regulating airflow (GHG 20-63)
With the on/off switch (4), you can set the airflow to one ofseveral different levels:

The specifications apply to a rated voltage [U] of 230 V. These spe- cifications may vary at different voltages and in country-specific mod-els.

Reduce the airflow, for instance, if the area surrounding aworkpiece cannot tolerate excessive heat or if a workpiece islight enough that the airflow might move it.

Regulating temperature (GHG 20-63)

On the lowest airflow setting, the temperature is set to50 °C. In the other two airflow settings, the temperature canbe adjusted.
When switching from the lowest airflow setting to another setting, the temperature last set is called up again.
To increase the temperature, press + on the (12) button; to decrease the temperature, press −.
Briefly pressing the (12) button increases or decreases the temperature by 10 C. Pressing and holding down the button continuously increases or decreases the temperature by 10 °C until the button is released or the maximum/minimum temperature is reached.
The set target temperature is shown in the display for three seconds. The actual temperature at the nozzle output is displayed and the unit of measure for the temperature (6) flashes until the target temperature is reached. The unit of measure for the temperature stops flashing once the target temperature is reached.

▶ If you reduce the temperature, it takes a little while for the power tool to cool down.
The lowest airflow setting is suitable for cooling down a heated workpiece or for drying paint. It is also suitable for cooling down the power tool before putting it down or chan- ging the attachment nozzles.

Regulating airflow (GHG 23-66)
In switch position 1 on the on/off switch (4), you can adjust the airflow in ten increments between 150 and 300 l/min. In switch position 2, you can adjust the airflow in ten incre- ments between 150 and 500 l/min.
Alternatively, you can used the saved airflow/temperature combinations (see “Saving airflow/temperature combina- tions (GHG 23-66)”, page 14).
The set airflow is displayed with the ten bar segments (9) at the lower edge of the display.

To adjust the airflow, first press the fan button (10). The fan symbol (8) in the display flashes. The airflow can now be regulated with the airflow control button (12).
To increase the airflow, press + on the (12) button; to de- crease the airflow, press -.
If you wish to adjust the temperature again using the (12) button, press the fan button (10) again. The fan sym- bol (8) in the display stops flashing.
If you move from switch position 1 to position 2, the airflow/ temperature combination last used in position 2 is set.
Reduce the airflow, for instance, if the area surrounding a workpiece cannot tolerate excessive heat or if a workpiece is light enough that the airflow might move it.

Regulating temperature (GHG 23-66)
In switch position 1 on the on/off switch (4), the temperat- ure is fixed at 50 °C. In switch position 2, you can adjust the temperature between 50 and 650 °C.
Alternatively, you can used the saved airflow/temperature combinations (see “Saving airflow/temperature combina- tions (GHG 23-66)”, page 14).
The set temperature is shown in the display (13).

To increase the temperature, press + on the (12) button; todecrease the temperature, press −.
Briefly pressing the (12) button increases or decreases thetemperature by 10 °C. Pressing and holding down the buttoncontinuously increases or decreases the temperature by 10 °C until the button is released or the maximum/minimumtemperature is reached.

The set target temperature is shown in the display for threeseconds. The actual temperature at the nozzle output is dis-played and the unit of measure for the temperature (6) flashes until the target temperature is reached. The unit ofmeasure for the temperature stops flashing once the targettemperature is reached.

▶ If you reduce the temperature, it takes a little whilefor the power tool to cool down.
Switch setting 1 is suitable for cooling down a heated work-piece or for drying paint. It is also suitable for cooling downthe power tool before putting it down or changing the attach-ment nozzles.

Saving airflow/temperature combinations (GHG 23-66)
You can save four airflow/temperature combinations or ac-cess four saved preset combinations.
To do this, the on/off switch (4) must be set to switch posi-tion 2.

Factory settings

– Drying paint
1| 250| 350| Shaping plastic pipes
2| 350| 400| Weldinelastic
3| 450| 500| Removing varnish
4| 550| 400| Soft solderin

A) Not shown in the display

To call up a combination, keep pressing the memory button (11) until the number you want appears in the display (5).
To save your own combination:

• Press the memory button (11) to select the memory pre- set you want.
• Set the desired temperature and airflow. The memory preset (5) flashes to indicate that the saved combination has been changed.
• Press and hold down the memory button (11). The memory preset (5) flashes for around two seconds. When it lights up continuously, the new combination has been saved.

Practical advice

▶ Pull the plug out of the socket before carrying out any work on the power tool.
Note: Do not position the nozzle (1) too close to the work- piece that you are using the power tool on. The resulting build-up of air can cause the power tool to overheat.
Removing the heat shield
When working in particularly tight spaces, you can remove the heat shield (2) by turning it.
▶ Caution: Nozzle is hot! Working without the heat shield increases the risk of burns.
Always switch the power tool off and allow it to cool before removing or attaching the heat shield (2).
To make the power tool cool down quicker, you can also let it run briefly on its lowest temperature setting.

Setting down the power tool
Set the power tool down on the storage surfaces (3) to leave it to cool down or to keep both hands free to work with.
▶ Take particular care when working in the vicinity of the power tool while it has been set aside. The heat from the nozzle or the air flow can cause burns.
Position the power tool on an even, stable surface. Ensure that it cannot tip over. Secure the cable outside of your working area so that it cannot pull the power tool down or cause it to flip over.
Switch the power tool off when not in use for a long period and pull the mains plug out of the socket.

Example applications (see figures A-G)
Images of example applications can be found on the graphics pages.
The distance between the nozzle and the workpiece de- pends on the material you are working on (metal, plastic etc.) and the intended working method.
The optimum temperature for each application can be de- termined by a practical test.
Always test the amount of air and temperature first. Start at a greater distance and a lower power setting. Then adjust the distance and power setting according to requirements.
If you are unsure what material you are working on or what effect the hot air might have on it, first test the effect on a concealed area.
All example applications apart from “Stripping paint from window frames” can be carried out without the use of ac- cessories. However, using the recommended accessories will simplify the work and considerably increase the quality of the result.

▶ Take care when changing the nozzle. Do not touch the nozzle while it is hot. Leave the power tool to cool down before changing the nozzle, and wear protective gloves when doing so. The heat from the nozzle can cause burns.
To make the power tool cool down quicker, you can also let it run briefly on its lowest temperature setting.

Removing varnish/loosening adhesives (see figure A)
Fit the surface nozzle (14) (accessory). Briefly soften the varnish with hot air and remove it with a clean spatula. Long heat exposure burns the varnish and makes removal more difficult.
Many adhesives can be softened using heat. By heating ad- hesives, you can break connections or remove excess adhesive.

Stripping paint from window frames (see figure B)
▶ The glass protection nozzle (15) (accessory) must be used for this application. There is a risk that the glass may break.
You can remove the paint from profiled surfaces with a suit- able spatula and brush it off with a soft wire brush.

Thawing frozen water pipes (see figure C)
▶ Before applying heat to the pipe, check it is in fact a water pipe. Water pipes and gas pipes often look identical from the outside. Gas pipes must under no cir- cumstances be heated.
Fit the angle nozzle (16) (accessory). Gradually heat the frozen points of the pipe, starting at the outlet and moving back towards the inlet.
Take great care when warming plastic pipes and pipe con- nections to avoid causing damage.

Shaping plastic pipes (see figure D)
Fit the reflector nozzle (17) (accessory). Fill plastic pipes with sand and seal them on both sides to prevent the pipe bending. Carefully and evenly heat the pipe by moving the tool back and forth from one side to the other.

Welding plastic (see figure E)
Fit the reducing nozzle (20) and the welding shoe (19) (both accessories). The workpiece requiring welding and the weld- ing wire (18) (accessory) must be made from the same ma- terial (e.g. both PVC). The seam must be clean and free from grease.
Heat the point of the seam carefully until it becomes pliable. Note that there is not a great difference in temperature between pliable plastic and liquid plastic.
Apply the welding wire (18) and allow it to flow into the joint to form an even bead.

Soft Soldering (see figure F)
For spot welding, fit the reducing nozzle (20); for welding pipes, fit the reflector nozzle (17) (both accessories).
If you are using solder without flux, apply soldering grease or paste to the solder joint. Depending on the material, heat the solder joint for approx. 50 to 120 seconds. Apply the solder. The solder must be melted by the temperature of the work- piece.
If necessary, remove the flux after the solder joint has cooled down.

Heat-shrinking (see figure G)
Fit the reflector nozzle (17) (accessory). Choose the dia- meter of the heat shrink plastic tube (21) (accessory) suit- able for the workpiece. Evenly heat the heat shrink plastic tube until it fits closely against the workpiece.

Maintenance and Servicing

Maintenance and Cleaning
▶ Pull the plug out of the socket before carrying out any work on the power tool.
▶ To ensure safe and efficient operation, always keep the power tool and the ventilation slots clean.
In order to avoid safety hazards, if the power supply cord needs to be replaced, this must be done by Bosch or by an after-sales service centre that is authorised to repair Bosch power tools.

After-Sales Service and Application Service
Our after-sales service responds to your questions concern- ing maintenance and repair of your product as well as spare parts. You can find explosion drawings and information on spare parts at: www.bosch-pt.com
The Bosch product use advice team will be happy to help you with any questions about our products and their accessories.
In all correspondence and spare parts orders, please always include the 10-digit article number given on the nameplate of the product.

Great Britain
Robert Bosch Ltd. (B.S.C.) P.O. Box 98
Broadwater Park North Orbital Road Denham Uxbridge
UB 9 5HJ
At www.bosch-pt.co.uk you can order spare parts or arrange the collection of a product in need of servicing or repair. Tel. Service: (0344) 7360109
E-Mail: boschservicecentre@bosch.com

Ireland
Origo Ltd. Unit 23 Magna Drive Magna Business Park City West Dublin 24
Tel. Service: (01) 4666700
Fax: (01) 4666888
Australia, New Zealand and Pacific Islands
Robert Bosch Australia Pty. Ltd.
Power Tools
Locked Bag 66
Clayton South VIC 3169 Customer Contact Center Inside Australia:
Phone: (01300) 307044
Fax: (01300) 307045
Inside New Zealand:
Phone: (0800) 543353
Fax: (0800) 428570
Outside AU and NZ:
Phone: +61 3 95415555
www.bosch-pt.com.au
www.bosch-pt.co.nz

Republic of South Africa
Customer service
Hotline: (011) 6519600
Gauteng – BSC Service Centre
35 Roper Street, New Centre Johannesburg
Tel.: (011) 4939375
Fax: (011) 4930126
E-mail: bsctools@icon.co.za

KZN – BSC Service Centre
Unit E, Almar Centre 143 Crompton Street Pinetown
Tel.: (031) 7012120
Fax: (031) 7012446
E-mail: bsc.dur@za.bosch.com

Western Cape – BSC Service Centre
Democracy Way, Prosperity Park Milnerton
Tel.: (021) 5512577
Fax: (021) 5513223
E-mail: bsc@zsd.co.za

Bosch Headquarters
Midrand, Gauteng
Tel.: (011) 6519600
Fax: (011) 6519880
E-mail: rbsa-hq.pts@za.bosch.com

Disposal
The power tool, accessories and packaging should be re- cycled in an environmentally friendly manner.
Do not dispose of power tools along with household waste.

Only for EU countries:
According to the European Directive 2012/19/EU on WasteElectrical and Electronic Equipment and its implementationinto national law, power tools that are no longer usable mustbe collected separately and disposed of in an environment-ally friendly manner.

EU Declaration of Conformity| We declare under our sole responsibility that the stated products complywith all applicable provisions of the directives and regulations listed belowand are in conformity with the following standards.
Technical file at:
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Heat gun| Article number
GHG 20-63
GHG 23-66| 3 601 BA6 2..
3 601 BA6 3..| 2006/42/EC 2014/30/EU 2011/65/EU| EN 60335-1:2012+A11:2014
EN 60335-2-45:2002+A1:2008+A2:2012
EN 62233:2008
EN 55014-1:2006+A1:2009+A2:2011
EN 55014-2:2015
EN 61000-3-2:2014
EN 61000-3-3:2013
EN 50581:2012
|  Robert Bosch Power Tools GmbH (PT/ECS)
70538  Stuttgart
GERMANY
Henk Becker
Chairman of Executive Management| Helmut Heinzelmann
Head of Product Certification
|
Robert Bosch Power Tools GmbH, 70538 Stuttgart, GERMANYStuttgart, 31.01.2019

Robert Bosch Power Tools GmbH
70538 Stuttgart
GERMANY
www.bosch-pt.com
1 609 92A 4RE (2018.10) T / 73

References

• Invented for life | Bosch Global
• Home | Bosch Power Tools
• Home | Bosch Power Tools

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