Miller Big Blue 450X Duo CST, Owner'S Manual

Page: 33 / 64

Complete Parts List available at www.MillerWelds.com
OM-247969 Page 29
5-11. Paralleling CST Units For SMAW Welding
907 473 − 10B / Ref. 801 701
!
Stop engine.
!
Failure to properly size and connect
weld cables may cause excessive
heat and start a fire, or damage your
machine.
NOTICE − When making weld connections
with a common cable, connect separate
cables of adequate size and equal length to
the weld output receptacles. Where the
weld cables are joined, be sure connecting
hardware is adequate for expected
amperage and that the junction is properly
insulated.
NOTICE − When using these connections
as a common work terminal, all
connections must be of the same polarity.
NOTICE − For common work connection,
work cable must be able to carry combined
weld output of both modules (see Section
5-8 for proper cable size).
NOTICE − Do not exceed machine duty
cycle.
1 Electrode Holder Cable For DCEP
2 Common Work Cable
For Stick welding Direct Current Electrode
Positive (DCEP), connect common work
cable to workpiece.
Connect electrode holder cable to Positive
(+) receptacles.
For Stick Direct Current Electrode Negative
(DCEN), reverse connections.
Be sure Process Select switches are
set the same. Be sure Amp Adjust
controls are set the same. See Section
6-5.
1
2