Run-In Procedure Using Load Bank Or Resistance Grid - Miller Big Blue 450 Duo CST Owner's Manual

11-2. Run-In Procedure Using Load Bank Or Resistance Grid

3
Stop engine.
Do not touch hot exhaust pipe, en-
gine parts, or load bank/grid.
Keep exhaust and pipe away from
flammables.
NOTICE – Do not perform run-in procedure
at less than 20 volts weld output and do not
exceed duty cycle or equipment damage
may occur.
1 Load Bank
Turn all load bank switches Off. If needed,
connect load bank to 115 volts AC wall re-
ceptacle or generator auxiliary
receptacle.
2 Welder/Generator
Place A/V range switch in maximum posi-
tion, A/V control in minimum position, and
Output Selector switch (if present) in either
DC position.
2
1
5
3 Weld Cables
4 Resistance Grid
Use grid sized for generator rated output.
Turn Off grid.
5 Voltmeter
6 Clamp-On Ammeter
Connect voltmeter and ammeter as shown,
if not provided on generator.
Start engine and run for several minutes.
power For Load Bank
Set load bank switches and then adjust
generator A/V control so load equals
rated voltage and current of generator
(see nameplate, rating label, or the speci-
fications section in this manual).
For Resistance Grid
+
3
7
+
Set grid switches and then adjust gener-
ator A/V control so load equals rated
voltage and current of the generator (see
nameplate, rating label, or the specifica-
tions section in this manual).
Check generator and meters after first five
minutes then every fifteen minutes to be
sure generator is loaded properly.
NOTICE – Check oil level frequently during
run-in; add oil if needed.
It is recommended to run the welder/genera-
tor for two hours minimum and up to four
hours under load. Place A/V control in mini-
mum position, then shut down load bank or
grid to remove load. Run engine several mi-
nutes at no load.
7 Engine Exhaust Pipe
Repeat procedure if wetstacking is present.
6
4
6
Stop engine and let cool.
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