18
OPERATING GUIDELINES
F. TRADITIONAL REWORKING GUIDE
The hand held reflow gun is also well suited for traditional reflow solder
ing and extraction, the following is a brief guide on reworking via the tradi
tional method.
Extraction:
1. 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. Use a preheating station if appropriate.
2. Pick up the hot air gun.
3. Set the temperature to about 220 to 300 degrees Celsius.
3. Turn the airflow to around 1630.
(
NOTE:
Air flow and temperature may vary depending on size of job)
4. Wait for the hot air temperature to reach the desired setting.
5. Place the hot air gun vertically on top of the target device. This will allow
hot air to directly heat up the target device and melt the solder. Use
appropriate nozzle for better extraction.
6. Use an air suction pen to safely remove the SMD.
7. Allow the PCB to cool down.
Soldering:
1. 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. Use a preheating station if appropriate.
3. Apply solder paste to the PCB .
4. Pick up the hot air gun.
5. Set the temperature to about 250 degrees Celsius.
6. Turn the airflow 1630.
(
NOTE:
Air flow and temperature may vary depending on size of job)
15
OPERATING GUIDELINES
Stage 2: SMD Extraction
1. The target device should be around 180°C after subjecting to preheat.
2. Lower the mouthpiece of the soldering gun a little to increase the effec
tive temperature to 210°C
3. Continue the spiral motion but this time concentrate more on the target
device.
4. The solder would be molten after around 30 seconds. The SMT device/s
can now be extracted.
5. Use an air suction pen to safely remove the SMD.
Stage 3: Cooling Down
1. The PCB needs to slowly cool down in order to minimize thermal shock.
2. Gradually raise the hot air gun to a height of about 15cm or half a foot
from the target board.
3. Then remove the hot air gun from the target device.
WARNING:
Items can be very hot. Allow sufficient time
for items to cool down before handling. Use
proper equipment to handle hot objects.
