IRDA-WELDER T-890 USER MANUAL
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causing the solder paste does not melt. If the peak temperature is high or the reflow
time is long, the metal power will be oxidized and affect the welding quality and
serious is causing the component and PCB board damaged.
2. The set of temperature wave:
Set the wave according to the solder paste and the above foundation. Different
solder paste, choose and set different waves. In addition, the temperature wave has
related to the PCB, the density and size of components. Generally lead-free welding
temperature should be higher 40
than melting point.
℃
Instructions:
1. Examination and starting
Inspect the infrared lamp body, temperature sensor and power line to check if they are
in good connection.
2. Adjustment and preparatory work before sealing-off/repair
1).
Put and adjust the PCB board:
Pull-out the slid support, unscrew the closing handle on the bracket, adjust the PCB
board bracket, and put the PCB board aim at the bracket rabbet. Put the PCB board
on the socket, screw the closing handle on the PCB board bracket, fix well the PCB
board; move the slid support to choose the suitable operating position.
2).
Adjust the infrared lamp holder:
Unscrew the lamp body closing handle, move the lamp handle, and make the infrared
lamp laser aims at the middle of the sealing-off /repairing chip, screw the lamp body
closing handle. Adjust the lamp body height by adjust whirl the focusing knob. And
keep the ideal distance between the lamp holder and chip is 20-30mm.
