WilTec AOYUE 474A++ User manual
Instruction Manual
Desoldering Station AOYUE 474A++
90474
Illustration similar, may vary depending on model
Please read and follow the operating instructions and safety information prior to initial operation.
Technical changes reserved!
Illustrations, functional steps and technical data may deviate insignificantly due to continuous further
developments.
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The information contained in this document may alter at any time without prior notice. No part of this
document may be copied or otherwise duplicated without prior written consent. All rights reserved.
WilTec Wildanger Technik GmbH cannot be held liable for any possible mistakes in this operating man-
ual, nor in the diagrams and illustrations shown.
Although WilTec Wildanger Technik GmbH has made every possible effort to ensure that this operating
manual is complete, accurate and up-to-date, errors cannot be ruled out entirely.
If you have found an error or wish to suggest an improvement, we look forward to hearing from you.
Send us an e-mail to:
or use our contact form:
https://www.wiltec.de/contacts/
The most recent version of this manual in several languages can be found in our online shop:
https://www.wiltec.de/docsearch
Our postal address is:
WilTec Wildanger Technik GmbH
Königsbenden 12
52249 Eschweiler Germany
Do you wish to collect your goods? Our address for collection is:
WilTec Wildanger Technik GmbH
Königsbenden 28
52249 Eschweiler Germany
In order to shorten the waiting time and to allow for an easy on-site processing, we kindly ask you to
contact us briefly beforehand or to place your order via the webshop.
E-mail: service@wiltec.info
Phone: +49 2403 55592-0
Fax: +49 2403 55592-15
To return your goods for exchange, repair or other purposes, please use the following address. Atten-
tion! To allow for a trouble-free complaint or return, it is important to contact our customer service team
before returning your goods.
Retourenabteilung
WilTec Wildanger Technik GmbH
Königsbenden 28
52249 Eschweiler Germany
E-mail: [email protected]o
Phone: +49 2403 55592-0
Fax: (+49 2403 55592-15)
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Introduction
Thank you for choosing to purchase this quality product. To minimise the risk of injury, we ask you to
always take some basic safety precautions when using this product. Please read this operating manual
carefully and make sure that you understand it.
Keep these operation instructions in a safe place.
ATTENTION:
•Always use an earthed power supply with the correct voltage. The corresponding voltage value
is given on the nameplate. If there are doubts concerning the earthing of the power supply,
contact a qualified person for checking it. Never use a damaged power cable.
•Do not open this device in a damp or wet area or with yourself being wet and protect it from
direct sunlight. Install the device in a safe place so that nobody can walk on the cables, fall over
them, and/or damage them. Make for sufficient cooling by ambient air and avoid any heat build-
up.
•Before cleaning the device, pull out the plug and only use a damp cloth for cleaning. Avoid using
cleaning agents and make sur that liquids may not enter the device.
•The inner parts of the device do not contain components requiring maintenance by the user.
Leave all maintenance, control, and repair works to a qualified person. With an unqualified per-
son intervening, the 2-years warranty will expire.
•Read all safety precautions and instructions. Failure to obey the safety precautions and
instructions might cause an electric shock, a fire, and/or severe injuries. Keep all safety precau-
tions and instructions for future use.
Safety instructions
General safety instructions
•The use of this device is only allowed with a fault current protection switch with a triggering
nominal current up to 30 mA (according to VDE 0100 Article 702 and 738).
•The device is not intended for use by persons (including children) with impaired or limited phys-
ical, sensory and mental abilities or lack of experience and/or real knowledge, unless they are
supervised by a person responsible for their safety or follow the instructions made by this person
on how to correctly use the device.
•Children should be supervised to ensure that they do not play with the device.
•During operation, the desoldering gun, hot air piston, and nozzle have temperatures between
200 ℃and 480 ℃. Therefore, personal injuries or material damage inside the work area might
happen in case the desoldering station is not handled with care.
•Obey the following principles when working with this device:
oAfter opening the parcel, check if every individual part of the device is in good condition or
if you can detect visible damage caused by transport. If there are damages visible, do not
operate the device, but immediately contact your vendor.
oSwitch off the device and pull out the plug before moving it.
oAvoid exposing parts of the device to too high a mechanical stress (shocks, pushes, etc.).
•Perform a visual inspection of the device before every use. Do not use the device if the safety
appliances are damaged or worn out. Never override safety regulations.
•Only use the device accordingly to the intended purpose stated in this manual.
•You are responsible for the safety of the working zone.
•If the cable or the plug is damaged due to external influences, the cable must not be repaired,
but has to be replaced with a new one.
•The voltage of 230 V AC indicated on the nameplate of the device must match the existent
mains voltage.
•Never lift, carry, or fix the device by using the power cable.
•Make sure that the electrical plug connection is protected from flood and moisture.
•Before working on the device (maintaining, repairing, cleaning it), pull out the plug.
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•Avoid exposing the device to direct jets of water.
•The user is responsible for complying with local safety and mounting regulations. If necessary,
ask a qualified electrician.
•In case of device failure, repairs can only be carried out by an electrician.
Special safety instructions
For your own safety, obey the following instructions, for otherwise material damage and/or
personal injuries might result:
•During operation, parts of this station can reach temperatures up to 480 ℃; therefore:
odo not use the station near flammable gases, paper, or other flammable substances;
oavoid touching hot parts of the station, for otherwise you might seriously injure yourself;
odo not touch metallic pieces that are near the desoldering tip.
•Overheating protection
oThe device is equipped with an automatic overheating protection that switches off the device
in case one of the temperatures is too high.
oThe device re-switches itself on as soon as its condition has normalised.
•Handle the device with care.
oNever drop it, never expose it to shock/pushes!
oThe device contains fragile components that might be destroyed when not handled with
care.
•Disconnect the device from the mains before not using it for a longer period of time, if the power
has gone off, or before opening it.
•During soldering, vapours form that might be harmful. Only perform soldering inside a well-
ventilated work zone to avoid harmful accumulations.
•Do not modify the device in any way.
Electrical connection
The electrical connection is made to an earthed socket 230 V ~ 50 Hz. Min. fuse 10 A.
Initial operation
•Place the device on a level and solid surface the temperature of which does not exceed 40 ℃.
Place the device horizontally to allow the station to operate correctly.
•Connect to mains.
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Scope of delivery
474-main station
Desoldering gun
Filter/spring
Filter/spring support
Ceramic filter paper
Desoldering gun holder
Cover
Cleaning drill
Cleaning needle
Mains plug and power cable
Desoldering tips
Technical specifications
Main device
Voltage (V)
230 ±10%
Frequency (㎐)
50 ±2
Size (㎜)
250 × 188 × 126
Length cable to handle (m)
approx. 0.9
Weight (㎏)
4.8
Desoldering smoke extraction (mmHg)
600 (24 inHg)
Electrical potential of earth (mV)
< 2
Resistance of earth (Ω)
< 2
Desoldering gun
Heating element
Ceramic
Power consumption (W)
50
Temperature range (℃)
200 –480 (392 °F–896 °F)
Pumping power (ℓ⁄min)
15
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Features and functions
•Large temperature adjustment range
•Extremely short heating-up times
•Antistatic design (ESD safe)
•Useful handle
•Desoldering gun holder
Operational components
Main device
Front part
№
Name
№
Name
1
Display
4
Vacuum connection
2
Function key for desoldering gun
5
Connection for desoldering gun
3
Temperature adjustment
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Desoldering gun
№
Explanation
№
Explanation
1
Ceramic paper filter collecting soldering ma-
terial and flux
6
Connection cable, to connect to the station
2
Filter holder, keeps the filter in place
7
Trigger, begins suction on press; do not
press if nozzle has not heated up completely
3
Ejection knob, ejects filter on press
8
Heating element, clean regularly
4
Pressure display, displays need of the noz-
zle or heating element to be cleaned or the
filter to be replaced
9
Hot nozzle to melt solder, intake for molten
solder
5
Vacuum cable, to connect to the station
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Main components
№
Name
№
Name
1
Filter pad
6
Heating element casing
2
Filter holder
7
Safety cap
3
Main part of desoldering gun
8
Filter tube cap
4
Heating element
9
Filter spring
5
Nozzle
10
Filter tube
Preparations
Main device
Remove the red safety screw on the underside of the station before operating the station.
Desoldering station
1. Plug the plug of the desoldering gun into the appropriate socket of the desoldering station.
2. Connect the vacuum hose to the vacuum socket.
3. Place the desoldering gun in its holder.
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Fasten the plug by turning it
clockwise.
Plug the plug into the station, making sure that the
marks match.
Basics
•Humidify the filter pads before use to allow them to be very efficient. It is recommended to
regularly re-humidify the pads.
•Clean the filter spring and exchange the filters when they are dirty.
•The solder channel inside the gun can be cleaned with the help of the cleaning needle if neces-
sary.
Initial operation
1. Plug the power cable into the station and in an appropriate wall socket.
2. Press the main switch on the rear part of the station to switch it on.
3. The display shows “OFF.”The display changes only with a function being activated by the user.
4. Plug the plug of the desoldering gun into the appropriate socket of the desoldering station.
5. Connect the vacuum hose to the vacuum socket.
6. To activate the desoldering function, press and hold the function key 2. The temperature display
shortly displays the pre-set temperature, then changes to show the actual temperature.
7. To change the temperature, use the function key 3.
8. Wait until the desoldering gun has heated up completely. The desoldering tip reaches its service
temperature after approximately 5–6 min. The optimal service temperature is reached after
about 5–9 min. If after switching-on for the first use solder collects inside the gun, clean the gun
and wait another moment until the gun has reached an ideal service temperature.
9. If necessary, check the temperature with an external thermal sensor and adapt it.
10. The solder must have melted completely before you can use the desoldering gun. Solder par-
tially melted obstructs the desoldering gun.
11. When activating the desoldering gun, wait another 1 or 2 s in order to make sure that the entire
solder reaches the filter instead of obstructing the gun.
12. Regular cleaning of the filter and gun avoids a loss of suction power.
13. To turn off the desoldering function, press the function key 2 for 3–5 s. Note that the temperature
shortly decreases when the desoldering gun is pressed. This is caused by the air flow sucking
in the solder. The system automatically heats up to the pre-set temperature.
Automatic sleep function
This function can be used to automatically switch off the desoldering station after a pre-set time. The
station being in sleep mode, the display shows three dashes: “---.”Simply activate a function key to
wake the station up. This function is turned off at the factory. If you wish to use it, follow the next steps:
1. With the station being switched off, press the function keys 2 and 3 at the same time for 5 s.
2. The display now shows “t00.”The function can be adjusted.
3. Use the function key 3 to set the desired time. You can set a time between 1 and 60 min. The
time value “0”means that the function has been turned off.
4. Confirm the changes by pressing and holding down the function key 2.
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Maintaining the desoldering gun
1. Checking and cleaning the desoldering gun in case of an obstruction
a) Plug in the power plug of the station, turn on the desoldering function of the station, and
wait for the nozzle to heat up.
b) Wait until the nozzle has heated up completely before beginning cleaning.
c) Clean the nozzle opening with the help of the cleaning needle.
d) In case the cleaning needle does not penetrate into the opening, instead use the cleaning
drill.
ATTENTION: During cleaning, the desoldering gun is hot. Apply appropriate material to avoid
injuries! Only perform maintenance jobs with the device being switched off and the power plug being
unplugged!
The cleaning needle is completely pushed in to the nozzle opening.
Push the cleaning drill into the nozzle opening by turning it clockwise.
Pull out the cleaning drill straightly without turning it.
Attention!
If the cleaning drill gets stuck into the nozzle, there is a risk of it breaking or being damaged other-
wise.
2. Check the nozzle for signs of wear and tear.
a) Check the condition of the nozzle tip coating.
b) The inner part of the nozzle and its surface are coated with a special alloy. If this alloy is
damaged by high temperatures, the nozzle is not able any longer to heat up correctly and
regularly.
Solder
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3. Replacing the heating element
a) Release the holder and remove the cover and tip.
b) Remove the old heating element, place a new one.
c) Replace the nozzle and cover on their correct places. Re-tighten the locking screw to pre-
vent any air leak. In case the locking screw is not correctly tightened, the desoldering cannot
heat up correctly any longer.
Heating element
Heating element protection
Nozzle
4. Checking the filters
a) The filters have to be checked regularly.
b) If the filter cover has cooled down to the point that one may touch it, press the ejection knob
on the rear part of the gun and remove the cover.
c) Remove the front holder and filter spring to avoid damages and obstructions.
d) Remove the filter.
e) Exchange the filter if you remark one of the following changes:
•The filter is rigid and brittle;
•solder has filled up two thirds of the filter spring;
•the filter spring is rigid and obstructed with flux and solder.
5. Re-installing the filter
a) Attach the filter spring to the front holder.
b) Attach the front holder to the filter cover, making sure that it is correctly oriented.
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Use –desoldering
1. Switch the desoldering switch to “on.”
2. Adjust the temperature.
a) Always adjust a temperature as low as possible.
b) To be able to precisely set the temperature, measure the nozzle temperature with a ther-
mometer and adjust the temperature regulation.
c) The temperature may be between 380 ℃and 480 ℃.
3. Wipe off old solder on the nozzle in the central hole of the sponge. If the nozzle tip is stuck with
old solder, the tip cannot correctly heat up any longer. Coat the nozzle with a thin layer of new
solder to ensure optimal heating power.
4. Allow the tip to touch the soldered spot to melt the solder.
a) Never allow the hot nozzle to touch the board itself.
b) Ensure that the solder has melted properly. Partially molten solder obstructs the desoldering
gun.
c) Never try to move the solder by force. It moves very easily when molten. If it does not move
easily, this is a sign for the solder not having melted correctly.
5. After ensuring that all the solder has melted, suck it in by pressing the gun trigger.
a) Hold the trigger for another 1–2 s in order to be sure that no solder rests stay in the channel
and that all solder gets into the filter.
b) Do not leave any solder rests in the hole on the board.
c) After removing all solder, wait for the board to cool down to avoid any accidental desolder-
ing.
6. Clean the filter and regularly humidify the sponge during and after use to ensure constant effi-
ciency.
7. After work, switch off the desoldering unit.
8. Before storing the device, wait for the desoldering gun to cool down.
Note: With the suction power obviously decreasing, clean the nozzle and heating element with the
help of the cleaning needle.
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Regulations for waste disposal
The Waste Electrical and Electronic Equipment Directive (WEEE Directive, 2012/19/EU) of the EU was
implemented in the German law related to electrical and electronic equipment and appliances.
All WilTec electric devices that fall under the WEEE directive are labelled with the symbol of a crossed-
out wheeled rubbish bin. This symbol indicates that this electric device must not be disposed of with the
domestic waste.
WilTec Technik GmbH is registered with the German registration authority EAR (Stiftung Elektro-
Altgeräte Register) under the WEEE-registration number DE45283704.
Disposal of used electrical and electronic devices (in-
tended for use in the countries of the European Union
and other European countries with a separate waste
collection system for these devices).
The symbol on the packaging or the product itself indi-
cates that this product must not be treated as normal
domestic waste but must be disposed of at a recycling
collection station for electrical and electronic waste.
By disposing of this product correctly, you contribute to
the protection of the environment and the health of your
fellow people. Inappropriate disposal threatens the en-
vironment and health.
Material recycling helps to reduce the consumption of raw materials.
Additional information about the recycling of this product can be provided by your local commune, the
municipal waste disposal facilities, or the store where you purchased the product.
Address:
WilTec Wildanger Technik GmbH
Königsbenden 12 / 28
52249 Eschweiler Germany
Important Note:
Reproduction and any commercial use (of parts) of this operating manual, requires a written permission
of WilTec Wildanger Technik GmbH.
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1
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