Miller Electric 250 manual Operating Optional Battery Charger, Battery Charge Controls

. A complete Parts List is available at www.MillerWelds.com

SECTION 8 − OPERATING OPTIONAL BATTERY CHARGER

8-1. Battery Charge Controls

			!	Have only qualified persons charge
				batteries.
			!	Do not use battery charger for jump
2	1			starting.
			NOTICE − D o not use generator power ac re-
	4	5
			ceptacles while using optional battery charger.
			Low voltage at receptacles may damage tools
			and other equipment.
			1	Charge Voltage Switch
			Place switch in position matching voltage of
			battery being charged.
			. Before connecting charging cables, place
				Charge Voltage switch in position match-
				ing voltage of battery being charged.
			2	Battery Charging Switch
			Place switch in On position to turn on charging
			current. Place switch in Off position to turn off
			charging current.
			3	Weld Process Switch
			!	Place switch in Charge position before
				connecting charging cables and start-
				ing engine.
			Use switch to select weld or battery charge
			output (see table in Section 8-2).
			4	Coarse Range Switch
			5	Fine Control
			Use Coarse Range switch and Fine Control to
			set charge current.
			!	Do not change Coarse Range or Weld
	3			Process switch position while welding
				or battery charging.
			. Charging current automatically stops
				when terminal voltage is 15 to 25 percent
				above required battery voltage.	228 649-A

8-2. Determining Battery Charging Current

1

(AMPS)	400
	350
CURRENT	300
	250
CHARGING	200
	150
	100
BATTERY
	50
	0
		500	1000	1500	2000
	0

BATTERY COLD CRANK AMP RATING (CCA)

1 Battery Charging Current Chart

Find battery cold crank amp (CCA) rating on battery. Use CCA rating on chart to find charge current setting for battery.

EXAMPLE: If battery CCA rating is 500, charg- ing current from chart is 100 amperes.

Do not exceed charging current found on chart. For longer battery life, use lowest charge rate possible.

142 975-B

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