Miller Electric MOG-200C, Owner'S Manual

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OM-805 Page 7
CAUTION
ARCING can damage switch.
•
Do not change position of any Amperage control or switch while welding or under load.
Arcing inside switch can damage contacts, causing switch to fail.
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1 Coarse Amperage Control
Use control to select coarse weld
amperage output.
To set amperage using only the
Fine Amperage control, place
Coarse Amperage control in Off po-
sition.
2 2-1/2 Ampere Switch
(Optional)
Use switch to add 2-1/2 amperes to
weld output.
To add 2-1/2 amperes to weld out-
put, place switch in On position.
3 Fine Amperage Control
Use control to add amperage, in 5
ampere steps, to weld output.
In Example:
Total Amperage Output = 122.5 A
(100 A + 20 A + 2.5 A)
2
3
1
Figure 4-5. Amperage Controls
Begin Welding
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Install &
Connect
Equipment
Select
Electrode
Put On
Personal Safety
Equipment
Set Controls
Insert
Electrode
Into Holder
Turn On
Welding Power
Source
Figure 4-6. Sequence Of Shielded Metal Arc Welding (SMAW)
Turn On
Shielding Gas
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Install &
Connect
Equipment
If Applicable,
Install High-
Frequency Unit
Select
Tungsten
Insert
Tungsten
Into Torch
Put On
Personal Safety
Equipment
Set Controls
If Applicable,
Turn On High-
Frequency Unit
Turn On
Welding Power
Source
Begin Welding
Figure 4-7. Sequence Of Gas Tungsten Arc Welding (GTAW)