14
OPERATING GUIDELINES
C. SMD REWORKING INITIAL PROCEDURES
1. Plug the device to the main power source using the power cord provided
in the package.
2. Secure the hot air gun on its holder.
3. With all terminal connections properly secured, switch ON hot air gun
function switch (“9” from the control panel).
D. SMD EXTRACTION GUIDE
Proper care should be taken when extracting SMT devices and plastic
components. Convectionstyle extraction is especially wellsuited to handle
highly sensitive devices. Likewise, the handheld reflow gun is made specially
for this type of application.
Follow these easy steps for convectionstyle extraction of SMD and plas
tic components.
Stage 1: Preheating
1. The target device should be pre heated in order to minimize thermal
shock to the system. Use a preheating station if appropriate.
2. Prepare the unit to be worked upon on a stable elevated surface. A
working platform with locking mechanisms to secure the PCB is highly
recommended.
3. Set air flow level to 50.
4. Set hot air temperature at about 250°C.
5. Lift the hot air gun and hold it vertically on top of the target device,
leaving approximately 2cm of space between the mouthpiece of the hot
air gun and the target device.
6. Begin preheating the target device by moving the hot air gun in a slow
spiral motion upon the entire PCB.
7. Maintain this motion for 30 to 90 seconds.
IMPORTANT:
Set air level control knob first before adjusting
the temperature knob to prevent burning
out the heating element .
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OPERATING GUIDELINES
ATTENTION:
●
Temperature settings presented in these guidelines are provided only for
reference purposes. Please refer to device manufacturer data for the
tolerances of the items to be soldered.
●
Actual temperature settings for soldering and reworking are dependent
on the size of the material to be soldered and solder paste reflow tem
peratures.
●
Very high reworking temperatures can damage sensitive SMT materials.
7.
Wait for the temperature to reach the desired setting.
8.
Place the hot air gun vertically on top of the target device. This will al
low hot air to directly heat up the target device and the solder paste.
Use appropriate nozzle for better soldering.
9.
Solder paste would turn to solder and meld the PCB and target device
together.
10. Allow the PCB to cool down.