ABB RPB 320 Instruction Manual page 9

 &RQWUROV DQG XWLOL]DWLRQ
 0DLQ VZLWFK 212)) ,2
When the switch is set to position , the indicating lamp (+ on the front goes on
to indicate that the power source is ready for use.
$OZD\V VZLWFK WKH SRZHU VRXUFH RQ DQG RII E\ ZD\ RI WKH PDLQ VZLWFK 1HYHU
XVH WKH SOXJ IRU WKH SXUSRVH
 ,QGLFDWLQJ ODPSV
There are two indicating lamps (H11, H12) on the power source, se Figure 6.:
The green lamp (H11) for stand-by mode is always on when the power source is
connected to the mains and the main switch is in position I.
The yellow lamp (H12) for thermal cut-out goes on when the thermostat has tripped
as a result of overheating. The fans cool the power source and when the lamp goes
out the power source is ready for use again (resetting takes place automatically).
 7KH IXQFWLRQ RI WKH IDQ
RPB 320 has one fan and RPB 420/520 has two fans running simultaneously.
• The fans run for a while when the main switch is turned to position I.
• The fans go on when the power source after a period of welding is heated
and stops 1-10 minutes after the welding is terminated.
• At idle running the fans enter into function for about 60 sec. every 30 min.
505 890-102
)LJXUH  0DLQ VZLWFK ,2
:$51,1*
53% 
&RQWUROV DQG XWLOL]DWLRQ
H12
H11
9