- 3 -
pipe in order to cool both the heating element and the handle. So do not disconnect the plug during this
cooling process. In case you don’t use the unit for a long time, disconnect the plug.
Note: After turn off the power switch of 852D about one minute later, power is automatically shut
off.
7
. Remove any remaining solder.
After removing the IC, remove remaining solder with a wick or desoldering tool.
Note: In case of SOP, PLCC, desolder it by using tweezers, etc.
QFP Soldering
1.
Apply the solder paste.
Apply the proper quantity of solder paste and flux (preferably no-clean) and place install the SMD on the
PCB.
2.
Preheat SMD.
3. Soldering
Heat the lead frame evenly.
4. Washing
When soldering is completed, wash the area with a defluxer.
Note: While there are many advantages Hot Air SMD rework, its is also possible to have defects such as
solder balls and solder bridges. We recommend you to closely inspect all soldering joints.
Precautions
1. Before attaching the nozzle, make sure that both the heating tube and the
nozzle are cool.
2. Caution High Temperature Operation
Do not use the 852D near ignitable gases, or other inflammable materials. Both the nozzle and the
heating air are extremely hot and can cause painful burns. Never touch the heater assembly or allow the
heated air to blow against your skin. Initially, the iron may emit white smoke, but this will soon dissipate.
3. After use, be sure to cool the unit.
After turning off the power switch, the unit will automatically blow cooling air through the pipe for a short
period of time .Do not disconnect the plug during this cooling process.
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