ENGLISH
WS 931
Melchioni S.p.A.
12
impurities and this can prevent them from dropping to the welding point. After welding, the
welding mouth has to be cleaned again and has to be filmed a little tin before the electric
iron is put again on the frame. It is very important to film the welding mouth with solder,
otherwise the welding mouth will be passivated after a period of time and cannot absorb
the welding preparation any more.
1. Heat to working temperature (the welding temperature regulated on the weld machine),
then put the welding mouth which is cleaned and equably filmed with tin and the welding
rod together on the welding point. The welding preparation will melt first to clean the
surface of the metal which needs welding. Then the welding tin melts so as to create
relating conductive connections. The welding of electric components costs not more than 2
minutes.
The well-welded jointing point looks slick and lustrous after cooling. While the welding
point with bad quality and many mistakes looks lusterless, uneven and easy to crack. The
causes leading to such result are as following: the improper solder is used or the welding
temperature is regulated too high. Another familiar
used last time and the higher line will display current temperature of the electric iron.
The welding temperature can be regulated from 150
0
C to 450
0
C in steps by means of two
regulating switches (up+/down-). The temperature will increase cause is that welding time
is too long or too short. The welding point cannot be heated for too much time. And the
electric iron also cannot be moved away from the welding point too early. Only when
welding tin melts to bright silvery white can the electric iron be moved away.
After welding, please melt a little solder on the welding mouth before putting the iron back
to the frame and turning off the machine. Clean away excrescent solder on the fiery
welding mouth with wet sponge before starting welding next time.
Technology specification:
Power supply voltage:
230volt•220volt-/50HZ
Electric iron power:
50watt
Equipment power supply fuse:
T1 A/250volt•50X20mm glass pipe•
Regulating scope of temperature:
150
0
C----450
0
C
Temperature display:
2 * 31/2grades LCD display•
display scope:150
0
C----450
0
C
Display precision:
5%
Circumstance humidity:
+5
0
C----+40
0
C, relative
humidity•85% (not in humidification)
Atmospheric pressure:
600 hPa---1000 hPa
Shell size:
210X125X135mm
width/height/depth•without electric
iron•
Weight:
about 2000 gram
