Miller Electric 250 - Manual (Page 31)

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A complete Parts List is available at www.MillerWelds.com
OM-217 455 Page 27
SECTION 8 − OPERATING OPTIONAL BATTERY CHARGER
8-1. Battery Charge Controls
! Have only qualified persons charge
batteries.
! Do not use battery charger for jump
starting.
NOTICE − D o not use generator power ac re-
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.
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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
Process switch position while welding
or battery charging.
.
Charging current automatically stops
when terminal voltage is 15 to 25 percent
above required battery voltage.
1
3
5
4
2
228 649-A
8-2. Determining Battery Charging Current
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.
1
0
50
100
150
200
250
300
350
400
0 500 1000 1500 2000
BA
TTER
Y CHARGING CURRENT (AMPS)
BATTERY COLD CRANK AMP RATING (CCA)
142 975-B