Hello,

Can anybody please help or advice.

I am trying to settle a dispute between my company's production
supervisor and the maintenance technician on the wave soldering
machine.

1) The maintenance technician insisted that the wave should be switched
on and off between boards to prevent/lessen "damage" to the wave
creation mechanism.
(The wave can be switched on and off automatically by a sensor on the
conveyor). My production supervisor think otherwise. She covered the
sensor so that the wave would not be off.(She says the sensor can
miss a board) So, who is right ?

2) My production supervisor sets the preheat to about 95 degree C so
that
the flux would not dry up when the PCB board reaches the wave and to
increase
solderability.(but this created a lotof residue on the solder
bath,according to maintenance).
My maintenance technician says the temperature should be about 120
degree C
so that it dry up the flux before the board reaches the wave. The reason
is so that
not much residue is created. Who is right again ??

Thanks in advance.

How Chee
Malaysia

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