Run-In Procedure Using Load Bank Or Resistance Grid - Miller Big Blue 400 Pro Owner's Manual

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

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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
receptacle or generator auxiliary power
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.
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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.
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
specifications section in this manual).
For Resistance Grid
Set grid switches and then adjust gen-
erator A/V control so load equals rated
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voltage and current of the generator
(see nameplate, rating label, or the
specifications 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/gener-
ator for two hours minimum and up to four
hours under load. Place A/V control in
minimum position, then shut down load
bank or grid to remove load. Run engine
several minutes at no load.
! Stop engine and let cool.
7 Engine Exhaust Pipe
Repeat procedure if wetstacking is pres-
ent.
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S-0683 / S-0684
OM-278215 Page 65