Miller Electric Big Blue 500 PT, Big Blue 600 X Run-In Procedure Using Resistance Grid, Manual

11-3. Run-In Procedure Using Resistance Grid

Stop engine.

Do not touch hot exhaust pipe, engine parts, or load bank/grid.

6	Keep exhaust and pipe away
	from flammables.

NOTICE − Do not perform run-

2in procedure at less than 20 volts weld output and do not exceed duty cycle or equip- ment damage may occur.

			1	Resistance Grid
			Use grid sized for generator rated
		1	output.
			Turn Off grid.
			2	Welding Generator
			Place A/V range switch in maxi-
			mum position, A/V control in mini-
			mum position, and Output Selector
			switch (if present) in either DC
			position.
			3	Weld Cables
			Connect grid to generator weld
			output terminals using proper size
			weld cables with correct connec-
			tors (polarity is not important).
			4	Voltmeter
			5 Clamp-On Ammeter
			Connect voltmeter and ammeter as
3	5		shown, if not provided on generator.
			Start engine and run for several
			minutes.
			Set grid switches and then ad-
			just generator A/V control so
			load equals rated voltage and
4			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 frequent-
			ly during run-in; add oil if needed.
			It is recommended to run the weld-
			ing generator for two hours mini-
			mum and up to four hours under
			load. Place A/V control in minimum
			position, then shut down grid to
			remove load. Run engine several
			minutes at no load.
				Stop engine and let cool.
			6	Engine Exhaust Pipe

Repeat procedure if wetstacking is present.

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