15
Suitable for desoldering of SMD components such as SOIC, CHIP, QFP, PLCC, BGA etc.
QFP De-soldering
1.
Melt the solder:
Hold the iron so that the nozzle is located directly over, but not touching the IC
and allow the hot air to melt the solder. Be careful not to touch the leads of the IC with the
nozzle.
2.
Remove the IC:
Once the solder has melted, remove the IC by lifting the pliers.
3.
Turn the power switch off:
After the power switch is off, an automatic blowing function begins
sending cool air through the pipe in order to cool both the heating element and the handle. So do
not disconnect the plug during this cooling process.
4.
In case you don’t use the unit for a long time, disconnect the plug.
Note
: After the power switch off about one minute later, the temperature will fall down to 75
℃
(167
℉
) and power automatically shut off.
5.
Remove any remaining solder:
After removing the IC, cleaning the remaining solder chips with
a wick or desoldering tool.
Note:
For SOP, PLCC etc. would recommend by using tweezers iron to desolder.
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 of hot air SMD rework, it is also possible to have defects
for soldering BGA. Will recommend to inspect all soldering joints closely.
MAINTENANCE
DESOLDER TIP REPLACEMENT AND DRESSING
Desolder tips can be changed or replaced simply unscrewing the barrel nut assembly.
The station must be turned off and allowed to cool before this operation. If the system
is left on without a tip in place, damage to the iron assembly may occur!
After removing the tip, blow out any oxide dust that may have formed in the tip
receptacle. Be careful not to get dust in your eyes. Replace the tip according to
Figures 3-9 and hand tighten the securing screw for the barrel nut assembly. Pliers can
be used to avoid contact with hot surfaces BUT SHOULD BE USED WITH
CAUTION because over tightening may cause damage to the element or fuse the tip
to the element.
PROCEDURE FOR CLEANING CLOGGED TIPS
CAUTION: This procedure is to be working in high temperature. Be careful to avoid
burning your fingers during this operation.
