Valley FABRICATOR 251, Руководство по обслуживанию

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August 22, 2008 4-5
SERVICE MANUAL FABRICATOR 251
Positive and Negative Welding Current Terminals
Refe r back to Figu r e 4-1. Both te r minals located at
the bottom of the unit a r e shown without the te r minal
knob. Both knobs must be fi r mly secu r ed befo r e
attempting to weld.
Gun Polarity Lead
This lead selects the welding voltage pola r ity of the
elect r ode wi r e. Attach it to the positive welding te r minal
(+) when using steel, stainless steel o r aluminium
elect r ode wi r e . Attach the Gun Pola r ity Lead to the
negative welding te r minal ( - ) when using gasless
flux co r ed elect r ode wi r e. If in doubt, consult the
manufactu r e r of the elect r ode wi r e fo r the co rr ect
pola r ity. Also r efe r to section 3-15.
Positive and Negative Welding Terminal Knobs
Welding cu rr ent flows f r om the Powe r Supply via
heavy duty te r minals. It is essential, that these te r minal
knobs a r e tight to achieve the necessa r y elect r ical
connection.
CAUTION
Loose welding te r minal connections can cause
ove r heating and r esult in failu r e of the
te r minals.
Gun Switch Receptacle
The To r ch T r igge r 4-pin r eceptacle is used to connect
the two wi r es f r om the to r ch gun to the Fab r icato r
251. Only pins 1 and 2 a r e used fo r this.
To make connections, align keyway, inse r t plug, and r otate
th r eaded colla r fully clockwise.
1
2
Art # A-07171
Figu r e 4-6: Gun Switch Receptacle
Spool Gun Interface Amphenol Connector
The Spool Gun Inte r face 10 pin connecto r is used to
connect a spool gun to the Fab r icato r 251 ( r efe r to
Figu r e 4-7 and Table 4-1).
A
B
C
D
J
I
E
F
G
H
Art # A-07181
Figu r e 4-7: Spool Gun 10 pin Receptacle
To make connections, align keyway, inse r t plug, and
r otate th r eaded colla r fully clockwise. The socket
info r mation is included in the event the supplied cable
is not suitable and it is necessa r y to wi r e a plug o r
cable to inte r face with the SPOOL GUN 10-pin
r eceptacle.
Socket Pin Function
A Not Used
B Spool Gun Moto r (-)
C Spool Gun Moto r (+)
D Spool Gun Switch
E
Spool Gun Speed C.W.
Potentiomete
r
F
Spool Gun Speed Wipe r
Potentiomete r
G Spool Gun Switch
H
Spool Gun Speed C.C.W.
Potentiomete
r
I Not Used
J Not Used
Table 4-1: 10-pin Receptacle Pin Functions
NOTE
When the SPOOL GUN is p r ope r ly attached
and the t r igge r is dep r essed, the system
automatically disables the inte r nal wi r e feed
and gas cont r ol and selects the SPOOL GUN
feede r and gas cont r ol.