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VI. Description For Function Setting
1. 853AA
In the case of shutdown, to press the air gun and preheat the reduce button for
3 seconds, then preheat window will show the factory default the correction
temperature“00”,If need to correct the working temperature of the preheating
station, or not air gun soldering iron, you can press increase button or reduce
button to make compensation of the respective temperature (compensation
range: -50°C~50°C). After 4 seconds, the program and exit the automatic
memory, display windows shows working temperature, the setting is
completed.
2. 853AAA
A.
After air gun ,soldering iron and preheating station temperature is stable,
pressing the temperature plus and minus key at the same time for 2 seconds,
the LED display screen display setting temperature, at the same time 3 digit
lighting.
B.
Press the temperature plus and minus key to input the measured
temperature.
C.
Press the temperature plus and minus key at the same time to make sure,
the program automatically correct the temperature and exit the correction
state.
Figure 1
5. Pay attention to avoid rework station nearby components reflow or blow away
small chip components, the hot gas stream discharged by the nozzle must be
isolated with these elements, the thin layer of shielding plate or the mask can
be put in the surrounding components of the reword station. Mask technology
is quite effective,but more trouble consuming, but can be used dedicated BGA
rework nozzles, it can reduce the damage to the components in the vicinity of
the demolition components and circuit boards in the process of unsoldering.
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PCB and component heating:
1. Advanced rework system uses a microcomputer to control the heating process,
with solder paste manufacturer specifications given parameters as possible,
and using a combination of the top and bottom of heating.
2. Bottom heating to complement the board due to pass of heat, while elevated
board temperature; The top heating is used heating components, in addition
the use of coders bottom heater can be eliminated due to local over - heating
the circuit board caused by distortions.
3. Motherboard heating can be used three methods, namely conduction, conve-
ction, and thermalefferma effects. Conduction heating when the heat source
with the motherboard contacts ( for example, using a hot plate ), which on the
rear components of the circuit board not applicable(NA).
4. Components heating (or top heating) generally use a convection hot air nozzl-
es, careful control of top heating components uniformly heated is extremely
important , especially for small quality components is particularly critical
(Figure 1).
853AA
853AAA
Digital temperature correction function
Air gun temperature down button
Preheating station temperature
down button
Air gun temperature plus and
minus key
Air gun manual / automatic conversion function (853AAA)
1.Open the air gun and soldering iron switch.
2. Pressing the air gun temperature minus key
and iron temperature minus key at the same
time for 2 seconds, the display shows “A1”,
for the automatic state (A0 for the manual
state).
3. Pressing the air gun plus key or minus key
to set the manual state or automatic state.
No operation for 3 seconds to exit the setting
state, the setting is completed.
Air gun temperature down button
Soldering iron temperature
down button
