Fuel Consumption; Duty Cycle And Overheating - Miller PRO 300 Owner's Manual

4-4. Fuel Consumption

2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
IDLE
0.00
0 50
DC WELD AMPERES AT 100% DUTY CYCLE

4-5. Duty Cycle And Overheating

1000
800
600
500
400
300
250
200
150
100
10
100 150 200
100% Duty Cycle At 250 Amperes
Continuous Welding
CV
15 20 25 30
% DUTY CYCLE
250 300 350 400
CC
40 50 60 80 100
The curve shows typical fuel use
under weld or power loads.
217 509
Duty Cycle is percentage of 10 min-
utes that unit can weld at rated load
without overheating.
Y Exceeding duty cycle can
damage unit and void
warranty.
217 515
OM-4422 Page 17