Bungard HOT AIR 3000 User manual

Manual-HotAir-3000-en Page 1 / 15
QUARZ REFLOW OVEN
HOT AIR 3000
Translation of the Original Instructions
Tabel of Content
Prospect.....................................................2
Technical Data............................................2
EG-Declaration of Conformity.....................3
Intended se of Machine............................4
Sicherheitshinweise....................................4
Scope of delivery........................................6
Installation..................................................6
Overview.....................................................7
Description of the function keys..................7
The temperature curve ..............................8
Setting of Parameters.................................9
Reflow-Process.........................................11
Characteristics of soldering alloys............12
Temperature curve parameters................13
Cleaning and Maintenance.......................13
Error message..........................................14
Spare Parts ans Options...........................14
Guarantee.................................................14
Disclaimer of Warranty.............................14
Copyright..................................................15
Bungard Elektronik GmbH & Co. KG, Rilkestraße 1, 51570 Windeck – Germany
Tel.: [phone] - 0, Fax: [phone] - 29, E-mail: [e-mail]

Manual-HotAir-3000-en Page 2 / 15
Prospect
The HotAir3000 is a stylish, practical reflow oven for manufacturing
and reworking of SMT products. The oven has a large display. The
intuitive menu navigation is controlled by a membrane keyboard.
The product uses highly efficient infrared heating elements and has
several thermocouple temperature gauges. Due to this and the pre-
cise evaluation in the microprocessor, the temperature curve of the
reflow process is highly accurate and the temperature in the respect-
ive reflow sections very uniform.
With the HotAir3000 all common alloys can be processed. The oven
has an automatic error detection with alarm.
This product has a variety of applications such as reflow soldering,
repairing, drying and so on. It is suitable for SMT small series, for re-
search and development of electronic products, school, education and study. The operating system soft-
ware is in English.
The stove is well insulated by a special aluminum silicate cotton, which reduces energy consumption, pro-
tects the circuit and allows optimal operation and keeps the temperature in the furnace constant.
Technical Data
Power connection 200 – 230 VAC. / 50-60Hz
Max. Power onsumption 2400 W
Max. P B-Board Size 350 x 300 mm
Time Settings 00:00 – 99:59 sec.
Temperature 60 -300 °C
Setting Options 5 Phases adjustable in time and temperature:
Preheat
Heat
Soldering
Holding
Cool down
Working Modi AutomaticReflow-Soldering
Permanent Heating or Drying function
Option to store 4 different Reflow profiles
Interface Grafic display with Keyboard
automatic Alarm function
Display of Process progress
Heatup Time ca. 8 min
Dimensions (LxWxH) (mm) 504 x 500 x 314 mm
Weight +/- 28 kg
Technical Changes reserved
Bungard Elektronik GmbH & Co. KG, Rilkestraße 1, 51570 Windeck – Germany
Tel.: [phone] - 0, Fax: [phone] - 29, E-mail: [e-mail]

Manual-HotAir-3000-en Page 3 / 15
EG-Declaration of Conformity
EG-Konformitätserklärung/Declaration of onformity
Hersteller / Supplier: Bungard Elektronik GmbH & Co. KG
Rilkestraße 1
51570 Windeck Germany
Bevollmächtigte Person für die Zusammenstellung
der technischen nterlagen:
Person in charge
Jürgen Bungard, Geschäftsführer /general director
Rilkestraße 1
51570 Windeck Germany
Produkt: Reflow Ofen HotAir3000
Hiermit erklären wir, dass die oben beschriebenen Maschinen allen einschlägigen Bestimmungen der Maschinen-
richtlinie 2006/42/EG entspricht.
Die oben genannte Maschine erfüllt die Anforderungen der nachfolgend genannten Richtlinien und Normen:
We hereby declare that the machines described above complies with all relevant provisions of the Machinery Direct-
ive 2006/42/EC.
The above machine meets the requirements of the following guidelines and standards:
Maschinenrichtlinie 2006/42/EG / Machinery Directive 2006/42/EC
EMV-Richtlinie 2014/30/EG / EMC Directive 2014/10830EC
Niederspannungsrichtlinie 2014/35/EG / Low Voltage Directive 2014/35/EC
DIN EN 60204-1 Sicherheit von Maschinen - Elektrische Ausrüstung von Maschinen - Teil 1: Allgemeine Anfor-
derungen / Safety of machinery - Electrical equipment of machines - Part 1: General requirements
DIN EN ISO 14121-1 Sicherheit von Maschinen - Risikobeurteilung - Teil 1: Leitsätze / Safety of machinery - Risk
assessment - Part 1: Principles
DIN EN ISO 12100-1 Sicherheit von Maschinen - Allgemeine Gestaltungsleitsätze, Risikobeurteilung und Risiko-
minderung / Safety of machinery - Basic concepts, risk assessment and risk reduction
DIN EN 55014-1 2012-05 Elektromagnetische Verträglichkeit, Anforderungen an Haushaltsgeräte, Elektrow-
erkzeuge und ähnliche Elektrogeräte, Teil 1: Störaussendung / Electromagnetic compatibility Requirements for
household appliances, electric tools and similar electrical appliances Part 1: Emission
DIN EN 55014-2-2009-06 Elektromagnetische Verträglichkeit - Anforderungen an Haushaltgeräte, Elektro-
werkzeuge und ähnliche Geräte - Teil 2: Störfestigkeit - / Electromagnetic compatibility - Requirements for
household appliances, electric tools and similar apparatus - Part 2: Immunity
Niederspannungsrichtlinie / Low Voltage Directive 2014/35/EG
Maschinenrichtlinie / Machinery Directive 2006/42/EG/37/EG
Windeck, 10.1.2020
Jürgen Bungard Geschäftsführer
Bungard Elektronik GmbH & Co. KG, Rilkestraße 1, 51570 Windeck – Germany
Tel.: [phone] - 0, Fax: [phone] - 29, E-mail: [e-mail]

Manual-HotAir-3000-en Page 4 / 15
Intended Use of Machine
The HotAir3000 is a soldering furnace for SMD components and also designed for lead-free solder-
ing processes.
All other applications require our written consent or at the user's own risk.
Safety Regulations
IMPORTANT SAFETY INSTRU TIONS FOR THE FOR ED ONVE TION OVEN
Generally
Please read the following text carefully and pay particular attention to the instructions on safety at
work and on commissioning.
Please keep this manual at a safe place. It contains instructions that are also important for later
maintenance or cleaning work.
The machines are not intended for integration or interconnection with other machines or equipment.
They may only be operated in rooms equipped for this purpose and operated only by qualified spe-
cialist personnel (soldering skills). Children and pets are to be kept away!
Do not use the oven if it is damaged or does not work properly.
Avoid strong shocks and collisions. This could damage the glass heating rods. If the glass heating
elements are damaged, switch off the machine immediately and replace with original glass heating
rods.
Site
The oven must be level and dry and there must be enough space around the oven for service and
maintenance (about 1m on all sides). Do not use this device outdoors! The table must be able to
carry a weight of at least 30 kg. The oven should be used at normal room temperatures of 15 to 25
degrees.
It is not allowed and even dangerous to install the oven in a cabinet or box. Do not install this unit
near a heating element or stove, even in a damp environment.
Electricity
The machine is manufactured using tested parts according to the usual electrical safety regulations.
However, this does not relieve the user of his duty of care when handling electrically operated
devices.
The main switch disconnects the machine from the power supply. The protection of the circuit and
the fault circuit must be carried out by the customer (16A).
After completion of work, the main switch should always be switched off.
Before carrying out any work on the machine (cleaning, etc.), switch off the machine and pull out the
mains plug. The power outlet should be near the machine and accessible so that the plug can be
pulled quickly in an emergency. This stove must have its own socket, which may only be used by
this stove.
High voltage - the housing may only be opened by qualified persons. High voltages can cause death
or serious injury.
Keep the plug and power cord away from liquid. Avoid liquids entering through the door or through
the ventilation grilles.
Should this nevertheless happen once:
Immediately switch off the oven and unplug the appliance from the socket.
In case of damage, the power cord may only be replaced by qualified persons.
Bungard Elektronik GmbH & Co. KG, Rilkestraße 1, 51570 Windeck – Germany
Tel.: [phone] - 0, Fax: [phone] - 29, E-mail: [e-mail]

Manual-HotAir-3000-en Page 5 / 15
Danger of fire and burns
During operation, the stove becomes hot and it must therefore only be operated under supervision.
Long heating times and high heating temperatures can lead to overheating of the stove, which in
turn may cause fire.
When placing pcbs into the oven or removing them, wear suitable gloves or use fireproof equip -
ment.
If the stove generates too much smoke, pull the plug and close the door. That stifles the flames.
Do not place flammable materials in the vicinity or on the reflow oven.
Do not block the ventilation grilles.
Do not touch the cover of the stove, it can be very hot and you risk severe skin burns.
Do not place flammable, explosive or other hazardous substances near the reflow oven. Do not dry
objects that emit flammable and explosive gases!
Never set a temperature higher than 300 ° ! The stove is not designed for that and could be
damaged. We exclude a guarantee for this!
Exhaust
se the oven only in well-ventilated areas. Follow the safety rules of the solder paste and adhesive
suppliers. During the soldering process gases can arise. These gases may endanger your health.
We recommend the use of a hood or an alternative extractor option!
1. Check the proper function of the stove using the following checklist:
2. Check the drawer. The drawer must not be kinked or damaged. Do not use the oven if
something is stuck between the lock and the ceiling. If the drawer is damaged, do not use
the oven
3. Check the seal for damage
4. Check if the oven room is free of dents.
5. Check the power cord, plug and socket for damage.
Maintenance
Clean the oven regularly. A dirty stove can lead to dangerous situations.
Do not insert wire or other foreign objects into the air inlet and outlet to avoid burns or damage to
ventilation and heat.
Do not wash the machine directly with water in order not to affect the insulation performance of the
machine.
Bungard Elektronik GmbH & Co. KG, Rilkestraße 1, 51570 Windeck – Germany
Tel.: [phone] - 0, Fax: [phone] - 29, E-mail: [e-mail]

Manual-HotAir-3000-en Page 6 / 15
Scope of deli ery
•Reflow-Ofen HotAir3000
•Foil tube D100 x 1,5 x 2 m for Exhaust
•Hose clamp
•This manual
•RS232-cable
Installation
Takeover from transport companies
After receiving and unpacking the machine, check for possible transport damage. In case of trans-
port damage, please inform your insurance company, the carrier and the manufacturer / supplier.
Site
The oven must be level and around the machine there must be sufficient space for operation and
maintenance (about 1 m on all sides). When setting up the machine, observe all safety prevention
regulations and other local regulations.
The oven should be set up on a well accessible table. The surface must be level and heat resistant
and be able to carry at least a load of 30 kg.
Install the device near exhaust vent. For the connection between the stove and the vent, use the
supplied aluminum foil pipe D100.
Make sure the power supply is correctly protected (16A) and residual current protection.
The outlet height of the exhaust air should be about 1m above the machine to use the chimney ef-
fect.
Do not place any other objects on the device, especially no flammable liquids, such as: As water,
hot water, alcohol, methanol, gasoline.
The machine can be cleaned in the cooled state. Wipe the inside of the machine with a dishcloth.
You can use some rinse water or anhydrous alcohol. Do not switch on the machine until it is com-
pletely dry.
At the beginning of operation, odors may occur during operation. This is a normal phenomenon.
After a while, that kind of smell disappears.
When not in use, turn off the main switch and unplug the power cord
If you are not going to use the device for a long time, you should take it out, pack it and put it back in
the original container in order to avoid moisture damage.
If you want to solder small PCB or FPC board pieces, use a high temperature mica board. Leave at
least 30 mm space between the boards on four sides to ensure uniform heating.
The manufacturer's specifications in the menu are only clues. se tests to determine the optimal
parameters for your application.
Temperature-sensitive precision devices such as LED, s laser head, micro connectors, soft pack-
ages, ICs u. Ä. Can be soldered by gently lowering the temperature while lengthening the times.
For components that can withstand high temperatures, you can increase the soldering temperature
accordingly to shorten the reflow soldering time.
Bungard Elektronik GmbH & Co. KG, Rilkestraße 1, 51570 Windeck – Germany
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Manual-HotAir-3000-en Page 7 / 15
O er iew
Description of the function keys
There are 5 buttons on the front panel of the unit: POWER, UP, DOWN, SET, and RUN, with the
R N and SET buttons being multifunction buttons. Depending on the dialog, there are various com-
mands above the keys that are activated by pressing the keys.
Bungard Elektronik GmbH & Co. KG, Rilkestraße 1, 51570 Windeck – Germany
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Manual-HotAir-3000-en Page 8 / 15
The temperature cur e
In the SMT production process, the temperature curve must be adapted to different alloy composi-
tions of solder paste. This temperature curve is one of the most important parameters to ensure
product quality. A standard reflow process typically has five temperature zones. For this reason, you
can define 5 temperature zones in the HotAir3000 software to map the standard reflow process.
Each temperature plane with the appropriate temperature and time performs another function during
the soldering process. The requirement and function of each temperature section are explained be-
low.
Preheating (READY)
Here, the circuit board is heated from room temperature to 120-150°C to remove residual moisture
or residual gas and possibly reduce internal stress in the circuit board. It also achieves a smooth
transition to the next section. The duration is usually 1 - 5 minutes. The specific time and temperat-
ure depends on the size of the board and the number of components.
Heating up (HEAT)
Here, the preheated circuit board is further heated until the flux contained in the solder paste be-
comes liquid. The flux removes oxides of tin paste and component.
sually the following temperatures are set in this section:
Lead alloy solder and precious metal alloy solder (Sn 42% -Bi58% lead-free or
Sn43% -Pb43% -Bi14% lead containing low-temperature solder)
150 – 180°C
Lead-containing medium temperature solder 180 – 220°C
Lead-free high-temperature solder 220 – 250°C
Soldering (WELD)
Here the reflow process is basically completed. Since the highest temperature is used here, temper-
ature-sensitive components can easily be damaged. The physical and chemical changes within the
solder paste are the biggest here and the molten solder can easily oxidise by air in combination with
high temperature. The settings of this stage are based primarily on the data of tin pastes.
Solder pastes are usually classified into low temperature solder pastes (150-180°C), medium tem-
perature solder pastes (190-220°C) and high temperature solder pastes (230-260°C).
The lead-free solder used today is a high-temperature solder.
Lead-free low-temperature solder paste usually contains precious metals. Leaded low temperature
solder paste is rarely used and then for special applications. Lead solder has excellent electrical,
physical and mechanical properties, e.g. Temperature change and oxidation resistance.
In this phase, the solder should be liquid so that the components will float and automatically center
and align with the surface tension of the liquid solder. In addition, 2 intermetallic phases are formed
between the circuit board and component, in which the tin mixes with the copper of the circuit board
and the metal of the component and forms the ideal brazing structure.
The soldering time is usually about 10-30 s. Larger boards and circuit boards with components that
form large soldering shadows require a longer soldering time.
Generally, the soldering time should be kept as long as necessary and as short as possible so as
not to expose the components to unnecessary thermal stress, which can lead to component mal-
function.
Bungard Elektronik GmbH & Co. KG, Rilkestraße 1, 51570 Windeck – Germany
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Manual-HotAir-3000-en Page 9 / 15
Hold time (HOLD)
The holding time plays a role especially for high temperature solders. When high temperature solder
paste rapidly cools, the tin forms very coarse crystals with undesirable mechanical and physical
properties.
At high temperatures and mechanical effects, the welding spots may easily tear off and lose the
mechanical and electrical connection function, thereby reducing the durability of the product.
By the holding time, the solidification occurs slowly and it form fine crystals.
The temperature is generally set 10-20 ° C lower than the solder melting point.
ooling time ( OOL)
Here the oven is no longer heated and the natural cooling accelerated by a fan. In principle, you can
remove the printed circuit boards when the temperature has fallen below 150 ° C. Please use tools
and personal protective equipment to avoid burns.
Annotation
In general, the soldering temperatures are set as low as possible, so that the components as well as
the printed circuit board are not damaged by thermal stress.
The temperature can also be lowered by extending the reflow time accordingly. This is advantage-
ous for protecting heat sensitive components, connectors and connectors.
Setting of Parameters
In general, the parameters are set during commissioning and each time the requirements change
due to other materials, components or solder pastes.
Start
Turn on the main power switch on the back of the unit and the indicator light in the upper left of the
screen lights up in green. If you press the red ON-OFF button, the display on the picture below will
show USE, WELD and ONST.
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Manual-HotAir-3000-en Page 10 / 15
Soldering Mode (WELD)
Preliminary note: the temperature and time settings in
the delivery condition of the stove are only indicative. The
parameters suitable for your application must be determ-
ined by test soldering. Please also refer to the informa-
tion provided by the solder paste manufacturer.
After pressing ON-OFF, WELD is highlighted. Press
RUN to display the dialogue as shown in the picture on
the left.
RUN starts the cycle, the indicator light in the upper left
corner of the display turns red and the oven starts to heat
up. The soldering cycle will be explained later. Here we
first explain the setting options.
If you press SET instead of RUN, then READY (pre-heat-
phase) will be highlighted. se the arrow keys to change the text to HEAT, WELD, HOLD or OOL.
Stay on READY and press SET. The marking jumps to TEMP (temperature) and you can adjust the
temperature between 70 and 130° with the arrow keys. Another press on SET and you can change
the time between 00:00 and 99:99 (minutes: seconds).
Button SET takes you back to READY and here you can use the the arrow keys to go e.g. to HEAT
to set the parameters for the heating phase. Press SET to go to the temperature settings and use
the arrow keys to set values between 120 and 300° . Another SET takes you to the time setting for
the heating phase.
Back to HEAT, press arrow down to get to the actual soldering phase. WELD is marked and with
SET you can change the temperature again between 120 and 300 ° and set the time with another
SET.
For HOLD, the holding time, the same applies, but the temperatures can only be adjusted between
70 and 230 ° here.
When you have finally arrived at OOL, the cooling phase, you can only set the temperature
between 70 and 200 ° here. A time is not set in section OOL, but a signal terminates the entire
soldering cycle when the set temperature is reached.
To exit the WELD dialogue, press ON-OFF.
Permanent heating mode
In the main menu, you can use the arrow keys to switch
between USE, WELD and ONST. Highlight ONST and
press RUN. The dialogue on the left side appears.
With RUN you switch on the heating, the control light
turns red and the oven heats up to the set temperature (=
SET TEMP). The current temperature is displayed to the
left. At the same time the display changes R N upwards
and STOP downwards, so that you can end the heating
process at any time by pressing the green RUN button. In
this case, RUN returns to the bottom of the display and
STOP to the top and you can restart heating by pressing
the RUN key.
When the set temperature is reached, the indicator changes to green and the oven keeps the tem-
perature.
Bungard Elektronik GmbH & Co. KG, Rilkestraße 1, 51570 Windeck – Germany
Tel.: [phone] - 0, Fax: [phone] - 29, E-mail: [e-mail]