Welding Precautions - MacDon M2170NT Operator's Manual

1.8 Welding Precautions

Understand these critical precautions before attempting to weld anything on the windrower.
IMPORTANT:
If the procedures below are not followed, the windrower's electronic components may be damaged. Some components
may only be partially damaged, which would result in some electrical components failing in an intermittent way. Such faults
are very difficult to diagnose reliably.
The windrower is equipped with several sensitive electronic components. Therefore, components to be welded should be
removed from the windrower whenever possible rather than welded in place.
When welding needs to be performed on a header, disconnect the header completely from the windrower before
beginning. These same guidelines apply to plasma cutting, or any other high-current electrical operation performed on the
machine.
IMPORTANT:
Ensure that the windrower is parked on a level surface, the ignition is turned off, and the key is removed before
disconnecting anything.
The following items need to be disconnected:
• Negative battery terminals (A) (two connections)
IMPORTANT:
Always disconnect the battery terminals first, and reconnect
them last.
• Master controller (A)
Two connectors: P225 and P224
Location: Behind the cab, near the header lift/fan manifold
To disconnect a connector, press center red tab (B), to
release the latch, then lift the latch and pull the connector
away from the master controller.
IMPORTANT:
When reconnecting these connectors, make sure to latch
them in place.
IMPORTANT:
Do NOT power up or operate the windrower until these
connectors are latched into place.
262171
SAFETY
Figure 1.19: Negative Terminals
A
Figure 1.20: Master Controller
10
A
B B
Revision A