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OPERATION
MAINTENANCE
Setting Gas Flow Rate on Gas Cylinder Regulator
Gas handling systems having adjustable flow valves should be
set per the information in the spool gun operating manual. A
typical value is 30 cubic feet per hour (cfh), or 14 liters per
minute.
Setting Gas Preflow Time on Control Module
Set the preflow to achieve good bead appearance at the start of
the bead. A contaminated appearance at the start of the bead
probably indicates a longer preflow time is needed.
Setting the Wire Speed
Set the wire speed, per the instructions in sections 1 and 2
below, to obtain the wire speed specified in the procedure set-
tings given in the spool gun manual. Measure the wire speed
with a wire speed meter or drive roll tachometer, if available.
Alternatively, the wire speed can be set by adjusting until the
welding current per desired welding procedure is achieved.
Setting Wire Speed When Using a K469 Spool Gun
The wire speed control knob on the Control Module varies
the wire speed from approximately 50 to 650 ipm (1.3 to 16.5
m/min.). Use this control to set the desired wire feed speed.
Setting Wire Speed When Using a K487 Spool Gun Having
Remote Speed Control
Set the wire speed control knob on the Control Module to
maximum. The control in the handle of the spool gun now
varies the wire speed across the entire range [approximately
50 to 650 ipm (1.3 to 16.5m/min.)]. In general, the spool gun
potentiometer varies the speed between 0 and 100% of the
Control Module wire speed control setting. A good practice
is to set the Control Module speed potentiometer for the
maximum anticipated wire speed needed so that the control
in the handle of the spool gun gives good range control.
Alternatively, the spool gun handle potentiometer can be set
to maximum and the Control Module potentiometer used as
a conventional speed control.
Making a Weld
Refer to your spool gun operating manual for instructions for
welding.
Routine Maintenance
The Control Module is designed to give years of trouble-free
service with little maintenance.
Recommended maintenance is limited to keeping the case and
cables clean. Use a damp rag to wipe down the case parts and
cables. Mild detergent can also be used, but do not use solvent-
based cleaners on nameplate, plastic parts, or cables. Any
questionable cleaner should be tried first on an inconspicuous
place on the machine.
-16-
Safety Precautions
WARNING
ELECTRIC
SHOCK
can kill
• Do not operate with covers
removed.
• Disconnect input power from power
source before servicing control
module.
• Do not touch electrically live parts.