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MODEL 250-C WELD GUN
The AGM Model 250-C weld gun is a semi-automatic, contact welding tool that has been
carefully engineered and designed for use with a wide variety of AGM accessories. Given
normal care and use, this weld gun will require very little maintenance. When repairs are
required, the complete disassembly of the weld gun can be accomplished in a matter of
minutes.
Following is a description of the various accessories available. The application sheets list
the recommended accessories and their part numbers.
COLLET* - This is always required for welding. It is very important that the correct size
be used and that it is in good condition. A loose fitting collet will cause arcing on the stud
or pin and could possibly cause poor welds.
COLLET PROTECTOR* - This is used when welding flanged studs or weld pins. It
allows you to weld various lengths of studs or pins without changing the gun set up. It
also helps to keep splatter away from the collet. It is important that the collet protector be
used whenever recommended. Protectors are not required when using stops, except when
welding Power Base pins.
STOP* - This is required when welding non-flanged studs or when the adjustable foot
assembly is used. Its purpose is to back up the pin or stud to prevent it from being
inserted too far into the gun. The Model 250-C gun utilizes two types of stops; the 437G
and the 250C-G. Both are easily installed.
COLLET ADAPTOR ASSEMBLY – This is used as a holder for the collets, stops, and
collet protectors. It allows for rapid interchange of collets and is easily removed by the
tapered wedge that is supplied with the gun.
It has been found to be good practice to keep extra collets, protectors, stops, and adaptors
on hand.
LEGS – These are used to provide correct weld gun spring pressure while keeping the
stud or pin perpendicular to the work. Legs are normally mounted 120 degrees apart on
the weld gun faceplate.
LEG SUPPORT RING – This is used when welding on curved or round tanks. It is
placed over the three legs and aligns the stud or pin when the ring is held firmly against
the work.
* Specify stud or pin diameter and length when ordering
.