WLD-TEC Fuego User manual

Safety Enhanced
Laboratory Gas Burner
EN
Instruction manual
EN 61326, 61000-3-2 DIN 30665, part 1
73/23/EEC
89/336/EEC

1 - Function knob
2,3 - Dual knob: 2 - Gas adjustment
3 - Air adjustment
4 - Multifunction Display (LCD)
5 - Power lamp
6 - IR-Sensor
7 - Burner head
7a - Flame orifice
8
46
32
5
7
1
9
10
11
14
16
13
12
17
18
15
6
19 19
8 - Connector for foot pedal
9 - Power connector for 9 V DC
10 - Gas inlet R 1/4“ L gas adapter
(left hand thread)
11 - Holding device for
inoculation loop holder
12 - Burner head screw
13 - Monitor electrode
14 - Ignition electrode
15 - Active nozzle
16 - Nozzle holder for
alternative gas
17 - Cover of the burner
shaft
18 - Retaining screw for
cover of the burner shaft
18a- Position scew for the
cover
19 - Guide slots for
tilt adjustment
7a
18a

Read these instructions carefully to familiarize yourself with the product. Please retain
these operating instruction for future reference.
Use: Safety laboratory gasburners for heating and flame sterilizing. Ideal for use in
cleanroom workbenches and the laboratory.
WARNING: DO NOT LEAVE THE ACTIVATED LABORATORY
GAS BURNER UNATTENDED!
SAFETY PRECAUTIONS:
•On unpacking the unit, check for possible transportation damages. Do not operate
the unit if damages are visible.
• After use or for any longer period of time without attendance, turn the main gas
supply
off and turn off the gas burner at the function knob (1).
•Pay attention to your relevant rules for using liquid gas.
•Only use DVGW safety tubings with thread or tubing connectors. Check the
condition of the tube/hose frequently. Depending upon type of tube/hose, hose
clamps are required.
• All gas connections must be adequately tightened with two wrenches. Ensure gas
proofness with a suitable test fluid / equipment. DO NOT seal the swivel nut with
Teflon tape etc.
•Keep hands or other parts of the body away from the burner orifice (7a).
•Do not operate the unit near flammable liquids or hazardous materials.
•Unattended operation of the unit is not permissible.
•Always work in a well-ventilated area.
•Note that the burner orifice (7a) remains hot after the flame has been
extinguished. Do not touch. Can cause burns.
•Allow sufficient time for flame orifice (7a) to cool down prior to
cleaning, desinfecting, servicing or transport. Ensure that the
unit and the gas supply are turned off.
•Because of the connectors at the back of the unit the backside should not be
sterilized with a flame.
•Allow sufficient time for burner head (7) to cool down prior to disassembling.
•Operate the unit with assembled burner head only.
•After cleaning the burner head (7) allow sufficient time to dry before assembling
again.
•Keep substances away from the flame orifice.
•Before mounting a nozzle check the O-Ring (20). Replace the sealing if damaged
or worn.

The range: Fuego SCS Art.-No. 8.000.000
with IR-Sensor and LC-Display
Adjustable IR-Sensor reaction distance
DoubleClick IR-Sensor (connectable)
5 standard-programs for IR-Sensor, button (function knob)
and foot pedal with count down display
SCS (Safety Control System)
BHC (Burner Head Control)
Removable and decomposable burner head
Tilt mechanism, right / left (23)
Holding device for 3 inoculation loop holders
Nozzles for natural gas, propane/butane gas
Turbo flame
Wrench 17 mm (21) for gas connection
Screwdriver (22) for burner head and
cover of the burner shaft
Tubing connector with swivel nut (24)
Power connection
Instruction manual and 2-year warranty
Optional: Foot pedal Art.-No. 6.000.402
1. Setup Procedure:
The unit is shipped with the nozzle for natural gas (N) installed.
The nozzle must be changed if other gas is to be used.
Replacement procedure: Remove the Nozzle P from the nozzle holder (16)
with a coin or the edge of the wrench (21) by turning it counterclockwise.
Remove the active Nozzle N for natural gas (15) in the same way
and exchange the nozzles.
ATTENTION: Before mounting a nozzle check the O-Ring (20).
Replace the sealing if damaged or worn (Art.-No. 8.000.010).
Now you are ready to connect the gas supply to the gas inlet (10).
The correct pressure for natural gas is within the range of 18 - 25 mbar,
for propane/butane gas 28 - 57 mbar.
Only use DVGW or other gas approved safety tubings with thread
or tubing connectors (24). Check the condition of the tube/hose
frequently. Depending upon type of tube/hose, hose
clamps are required.
All gas connections must be adequately tightened with
the wrench (21) (SW 17mm, included). Ensure gas proofness
with a suitable test fluid / equipment. Do not seal
up the included tubing connector (24) and swivel nut
with Teflon tape etc.
A DVGW-proven or other gas approved pressure
regulator (50mbar) must be used for liquid gas.
Pay attention to your relevant rules for using liquid gas.
1.1 Foot pedal connection:
Insert the connection cable of the foot pedal (accessory)
into the socket (8) at the back of the unit.
16
15
20
10
21
22 23
24
89

1.2 Electrical connection:
Insert the power cord into the socket (9) on the back panel of the unit, or into the socket of the
foot pedal. The default supply must be connected to a voltage source of 100 - 240 V /
50/60 Hz.
2. Operation: Flame regulation:
The flame can be varied in size and intensity by turning the gas knob (2) and adjusting the
air knob (3) to suit all requirements.
Attention When operating the unit for the first time or after changing the nozzle, turn the gas
adjustment knob (2) two revolutions to the left and turn the air adjustment knob (3) 3-4
revolutions to the left, too.
2.1 Operation: On-Off switch, menu navigation
Switch the unit on by a short push on the function knob (1). It can be turned off by a long push
( 2 seconds +) on the function knob.
By pushing and turning the function knob all programs and settings can be selected and
adjusted. Structure of menu:

4
1
6
According to the arrows in the LCD (4) all menu items can be
selected and deselected. The arrows in the display
(left, push, right) show, in which direction the next menu items
are accessible. If a menu item for time adjustment or settings is
selected the time or parameter can be altered generally by turning
the function knob.
2.2 Operation: Application programs
- BUTTON StartStop:
The flame is ignited by operation of the function knob (1). The flame is extinguished after
renewed actuation of the function knob (1). Additionally the flame is automatically extinguished
when the burning timer has expired. (The application program “BUTTON StartStop“uses the
same timer as the application program “SENSOR StartStop“. If a different burning time is
required, the timer can be adjusted in application programm “SENSOR StartStop“. For more
information see paragraph “SENSOR StartStop“.)
- PEDAL Standard:
The flame is ignited by operation of the foot pedal. The foot pedal remains depressed for the
duration of use. The flame is extinguished upon release of the pedal. (In case of a connected
Autoloop (Pro) the unit switches over to a special Autoloop program. Please see Autoloop
manual for further information)
- PEDAL Start-Stop:
The flame is ignited by operation of the foot pedal. The flame is extinguished after renewed
actuation of the foot pedal. Additionally the flame is automatically extinguished when the
burning timer has expired. Alternatively the flame can be extinguished by a short push on the
function knob. (In case of a connected Autoloop (Pro) the unit switches over to a special
Autoloop program. Please see Autoloop manual for further information)
Varying the burning time (1sec. - 2 h): The burning time can be adjusted when the flame
is off, only.To change the timer, press the function knob (1) at the particular application
program. The time adjustment appears on the display. Now, by turning the function knob (1)
the minutes can be varied. If the desired minute value is achieved press the function knob (1)
again. Then, the needed seconds can be set by turning the function knob (1). By pushing the
knob again the time will be memorized and the menu returns to the application program.
- SENSOR Auto-Off:
For flame ignition, activate the sensor window (6) by passing your hand over it at a distance
of 5-50 mm. The flame will burn for the timespan set on the burning timer and then extinguish
automatically. Alternatively the flame can be extinguished by a short push on the function
knob (1).
Varying the burning time (1sec. - 2 h): see PEDAL Start-Stop

- SENSOR Start-Stop:
For flame ignition, activate the IR-Sensor (6) by passing your hand over it at a distance of 5-
50 mm. The flame is extinguished after renewed activation of the IR-Sensor. Additionally the
flame is automatically extinguished when the burning timer has expired. Alternatively the
flame can be extinguished by a short push on the function knob (1).
Varying the burning time (1sec. - 2 h): see PEDAL Start-Stop
Notice: All burning times are memorized and are available upon the next switch-on of the unit.
Additionally the application program which was used the last time before turning off the unit
is memorized and will be called upon the next switch-on.
2.3 Operation: Settings
To select the settings menu turn the function knob (1) to the right till “Settings“appear on the
LCD. Access the settings menu by a short push on the function knob.
- BHC, Burner Head Control:
The safety feature BHC (see paragraph 3)identifies burner head clogging by liquids or
solid substances. If the burner head is clogged “BHC“appears on the LCD (see also
paragraph 3) and the maximum burning time is limited to 30 seconds. To disconnect this
time limit press the function knob and set the asterisk “*“to OFF. Memorize and return to
the settings menu with a short push on the function knob.
BHC: ON: 30 s time limit activated (factory settings)
BHC: OFF: 30 s time limit deactivated
- DC, DoubleClick IR-Sensor:
When activated, this safety function ensures that the burner can only be ignited by
activating the DoubleClick IR-Sensor twice. As a result, unintentional ignition or ignition
due to dropping or falling objects is virtually impossible. To turn the DoubleClick ON press
the function knob and set the asterisk “*“to ON. Memorize and return to the settings
menu with a short push on the function knob.
DC ON: DoubleClick connected, within one second the IR-Sensor needs to
be activated twice to ignite the flame
DC OFF: DoubleClick disconnected. The IR-Sensor needs to be activated
one time only to ignite the flame (factory settings).
Working with the DoubleClick: Ignite the flame by passing the IR-Sensor (6) with your
hand twice within a time range of one second. After the first activation „DC“appears in
the LCD for one second. During the period “DC“is shown on the LCD the IR-Sensor (6)
needs to be activated a second time to ignite the flame.
- Stand-By:
This automatic unit cut-off system can be varied from 1 to 120 minutes. When the flame has
been not ignited for a longer time as set on the Stand-By-timer the unit is switched off to avoid
accidental activation, for example after a break.

To adjust the Stand-By timer press the function knob (1) and set the time by turning the knob
clockwise or counterclockwise. If the needed time is set, memorize and return to the settings
menu with a short push on the function knob (1).
- IR-Sensor:
At the menu IR-Sensor, the detection range of the IR-Sensor can be varied. To adjust the
IR-Sensor range press the function knob (1) and set the range by turning the knob clockwise
or counterclockwise.
clockwise rotation: IR-Sensor range ++
counterclockwise rotation: IR-Sensor range --
The bar indicates the current (quantitative) IR-Sensor range. The adjusted range can be
checked by passing the IR-Sensor (6) with your hand. If the IR-Sensor (6) is activated by your
hand “IR“appears in the LCD.
If the needed range is set, memorize and return to the settings menu with a short push on
the function knob (1).
Attention: It is possible to adjust the sensor range to 0 mm or more than 50 mm. Then the
IR-Sensor is out of range and cannot be activated or “IR“is shown on the LCD permanently.
In that case, increase or decrease the IR-Sensor range.
- Language:
To adjust the language press the function knob (1) and set the language by turning the knob
clockwise or counterclockwise. If the asterisk “*“is placed in front of the required language,
memorize and return to the settings menu with a short push on the function knob (1).
- Factory settings:
Enter the selection “NO“/ “YES“by pushing the function knob (1). If “YES“is selected and if
the function knob is pressed again, all timer and parameters will be reset to factory settings.
- Up:
To exit the settings menu press the function knob (1). Then turn the function knob
counterclockwise to return to the application programs.
2.4 Operation: switch-off
The unit can be turned off by pushing the function knob (1) for more than 2 seconds.
3. Safety symbols:
Residual heat display: The residual heat display indicates a hot burner head.
Attention: If the residual heat display is on DO NOT TOUCH the burner head. Can cause
burns!
Even after switching-off the unit the residual heat display remains on the LCD till the burner

head is cooled down.
Notice: Disconnecting the power supply or removing the power cord will clear the residual
heat display even if the burner head is still hot.
BHC: If the burner head is clogged “BHC“will blink on the LCD. Additionally, if BHC is ON in
the settings menu, the maximum burning time will be limited to 30 seconds.
(see paragraph 2.3)
If BHC is blinking it is requested to clean the burner head immediately.(see paragraph 5.1)
4. Error displays:
- Ignition failure:
This message appears and indicates a malfunction if the flame fails to ignite after 7 seconds.
In case of ignition failure check the burner head (7) for possible clogging, check the correct
input pressure of the gas supply and verify that the correct nozzle is installed.
In case of this malfunction the gas supply will be shut off automatically.
Nozzle N: natural gas, 18-25 mbar Nozzle P: propane-/ butane gas, 47-57 mbar
- Flame failure:
This message indicates a malfunction if the flame is extinguished by external factors and fails
to reignite within 5 sec. In case of flame failure check the burner head (7) for possible clogging
and verify the correct input pressure of the gas supply.
In case of this malfunction the gas supply will be shut off automatically.
- Overtemperature
This message indicates a malfunction if the interior temperature has exceeded 70 °C. At a
normal room temperature with normal air circulation the unit is suited for continuous
operation.
In case of overtemperature increase the air ventilation or change the operation site.
In case of this malfunction the gas supply will be shut off automatically.
- BHC:
This message indicates that the time limit (30 seconds) was turned on due to a clogged burner
head. For cleaning the burner head see paragraph 5.1.
- Burner head assembly monitor:
This message indicates that the burner head is removed. Further operation is possible after
the burner head is reinstalled.
Notice: All error displays can be reset by a long push (2 seconds+) on the function knob (1).
(In case of overtemperature the unit needs to be cooled down and in case of burner head
assembly monitor the burner head needs to be reinstalled prior a reset is possible.)

5. Cleaning and sterilizing:
Allow sufficient time for burner orifice (7, 7a) to cool down before disassembling or cleaning
the burner head. Check the unit is disconnected and that the gas supply is turned off at the
mains. The burner can be cleaned with customary commercial disinfectants. Additionally, it
is possible to remove the burner head and to clean it separately.
The stainless steel and glass construction allow 100% UV-radiation sterilization and short
time surface flame sterilization.
Attention: Because of the connectors at the back of the unit the backside should not be
sterilized with a flame.
5.1 Burner head disassembly and cleaning:
Allow sufficient time for burner orifice (7,7a) to cool down
before disassembling or cleaning the burner head.
Check the unit is turned off, that the gas supply is
turned off at the mains. Clean the burner head with
customary commercial disinfectants, sterilize it in
an autoclave or wash it in a dishwasher. To remove
the burner head proceed as follows:
Unscrew the burner head screw (12) completely with
the included screwdriver. Turn approx. 8 revolutions
to the left. Now remove the burner head from the device
by pulling it upwards. Reinstallation is performed
in the reverse sequence.
The dismounted burner head can be even dismantled into the individual components for in-
depth cleaning: Unscrew both screws (12a) and take off the base plate (12b) of the burner
head which was fixed by the two screws (12a). After the base plate is removed both electrodes
can be pulled out for seperate cleaning. Reinstallation is performed in the reverse sequence.
5.2 Burner shaft cleaning:
Unscrew the screw (18) completely
with the included screwdriver. Take off the cover (17)
of the burner shaft. Now the burner shaft can
be cleaned or solid substances which have fallen
into the unit can be removed. Reinstallation is
performed in the reverse sequence. Take care that
the notch of the cover fits to the screw (18a).
6. Turbo flame:
If the cover of the burner shaft (17) is removed the
flame is extremely firm and consistent. To take off
the cover of the burner shaft unscrew the screw (18)
completely with the included screwdriver. With an open burner shaft the intensity of the
flame cannot be adjusted by the air knob any longer. During the use of the turbo flame most
of the needed air is taken inside through the open burner shaft. Remounting the cover of
burner shaft. (see paragraph 5.2)
7. Tilt adjustment:
Insert the tilt adjustment (23) into the slots (19)
at the bottom of the unit. The tilt-adjustment can
be used to the left or right side to protect the
burning chamber from contamination when
working with liquids.
23
7a 7
12
12a 12b
18a
17
18
18a open
burner
shaft

Notes
8.Warranty:
All Fuegos are covered under our two-year manufacturer warranty against any manufacture
defects in material and workmanship. The WLD-TEC warranty guarantees all Fuegos
under normal usage conditions and does not cover any damages as a direct result of user
misuse or/and abuse. The warranty is void upon any unauthorized servicing, disassembly
or modifications.

Troubleshooting guide
The blue power lamp does not light up
Check for correct connection and specification of the power adapter.
Ensure that the original power adapter is used.
Specifications: 9 V / DC, 1A Polarity:
The foot pedal does not work
Check for correct connection of the foot pedal.
Ensure that the foot pedal socket and plug is not twisted or broken.
No Flame
In case of ignition or flame faliure check if the burner head is clogged. Verify the input
pressure of the used gas. Ensure that the correct nozzle is installed in the unit.
Nozzle N: natural gas, input pressure: 18-25 mbar
Nozzle P: propane / butane gas, input pressure: 47-57 mbar
Inspection of the burner head (clogging)
Take care that there are no liquids or other substances at the Bypass (area between the
inner and the outer ring)
Especially remove substances in the
marked areas at the electrodes. If there
are contaminants in this area, the flame
cannot encircle the electrodes correctly.
Clean this areas with a brush. The
burner head can be cleaned with
customary commercial disinfectants,
or it can be sterilized in an autoclave or
washed in a dishwasher.
Flame burns 30 seconds, only
BHC time limit is active, BHC appears at the LCD. The burner head is clogged and must
be cleaned. (see paragraph 5.1)
The time limit can be disconnected in the settings menu at point BHC.
(see paragraph 2.3)
Flame too small / large / soft
Check the position of the air and gas adjustment.
Check if the correct nozzle is installed.
Nozzle N: natural gas, 18-25 mbar
Nozzle P: propane / butane gas, 47-57 mbar
Check if the drilling of the active nozzle is blocked. Unscew the active nozzle.
(see paragraph 1) If the drillig is blocked clean with a brush or compressed air.
No ignition spark / BHC blinks but the burner head is clean.
Check if the ceramic electrodes are in good condition. In some cases the electrodes
may break. To check move the ends of the electrodes. If they are not moving they
should be okay. If they are moving more than 0.5 mm the electrodes are broken. The
electrodes can be dismantled and changed by the user. (see paragraph 5.1)
+-
Bypass

The IR-Sensor does not work
It is possible to adjust the sensor range to 0 mm or more than 50 mm. Then the IR-Sensor
is out of range and cannot be activated or “IR“is shown on the LCD permanently.
In that case, increase or decrease the IR-Sensor range at the point IR-Sensor in the
setting menu.(see paragraph 2.3)
The burner shuts-off due to overtemperature frequently
In case of overtemperature increase the air ventilation or change the operation site.
Service address:
WLD-TEC GmbH
Production & Service
Halle-Kasseler-Str.49
37318 Arenshausen
Germany
Telefon: [phone]
Telefax: [phone]
Email: [email protected]
Internet: www.wld-tec.com

Technical data:
Technology Microprocessor, LC-Display
Programs
IR Sensor: Start-Stop with timer, 1 sec - 2 h
Auto-Off with timer, 1
sec - 2 h
Foot pedal: Standard (flame during pressed foot pedal)
Start-Stop with timer, 1
sec - 2 h
Button: Start-Stop with timer, 1 sec - 2 h
Safety features
Safety Control System (SCS): ignition and flame control, temperature monitor
with gas safety cut off burner head clogging and
assembly monitor (BHC)
automatic unit switch off,1 - 120
min
residual heat display
Gas supply and consumtion
Gas supply: 1/4“left + filter
Gas types: II2ELL3B/P: natual gas E/LL,18 - 25 mbar
liquid gas,20 - 50 mbar
Connected load: 70 g/h liquid gas
Continuous cartridge operation CV 360 - 40
min, Express 444 - 50 min,
CG
1750 - 150 min, C 206 - 170 min,
CP 250 - 210 min, CV 470 - 3470min
Temperatures
Flame temperature: 1350 °C on liquid gas
1300 °C on natural gas (E)
Temperature threshold level: 1 kW liquid gas, 1 kW natural gas
Electrical
Power consumption: 2 VA
Power connection: 100 - 240 V / 50/60 Hz / max. 0.3 A
9 V DC / 1 A
IR-Sensor coverage: 5 - 50 mm, adjustable
DoubleClick IR-Sensor: time range 1sec (can be disconnected)
Mechanical
Casing and operating controls: stainless steel / glass, UV and solvent resistant
Burner head: removable and decomposable, stainless steel
Cover of the burner shaft: Ø23 mm, with drains
Measurements (B x H x T): 103 x 49 x 130 mm
Weight: 700 g
Licences
DIN-DVGW Reg.-No.: NG-2211AS0167
CE: EN 61326-1, EN61000-3-2, EN 61010
EEC guidelines: 89/336/EEC und 73/23/EEC

Göttingen, 09/28/2005 B.Wartewig
Geschäftsführer
Manufacturer
Declaration of Conformity
Following the Directives 89/336/EWG (EEC) and 73/23/EWG (EEC)
Electronic Laboratory gas burner
Fuego SCS Typ / type 8.000.000
This declaration relates is in conformity with the relevant provisions of the following standards together
with the normative document A1 mains connection.
1. Electromagnetic Compatibility Directive
1.1 EN 61326-1 A1/A2/A3 Electrical equipment for measurement, control and laboratory use,
EMC requirements
Generic Emission Standard: Electrical Equipment, class B, table 4
Generic Immunity Standard: Industrial areas,
continuous, unmonitored operation
1.2 EEN61000-3-2:2000 Limits for harmonic current emissions, class A
2. Security of electrical resources
EN 61010 Safety requirements for electrical equipment for measurement, control,
and laboratory use
Part 1: General requirements

Overview:
Sales:
Spandauer Weg 1
D - 37085 Göttingen
Telefon : [phone]
Fax : [phone]
Internet: http://www.wld-tec.com
10/05
Production und Service:
Halle-Kasseler Straße 49
D - 37318 Arenshausen
Telefon : [phone]
Fax : [phone]
Email: [email protected]
WLD - TEC GmbH