2. gun routine maintenance, 3. welding power source overload protection – Miller Electric Renegade 180 User Manual

Page 36

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Complete Parts List available at www. MillerWelds.com

OM-228 042 Page 32

8-2. Gun Routine Maintenance

Stop engine and dis-

connect gun before

maintaining.

n = Check

Z = Change

~ = Clean

l = Replace

Reference

Every

Spool

Of Wire

Section 8-7

~ Gun Casing

~ Nozzle, n Contact Tip

Every 3

Months

Section 8-7

l Cracked Parts

l Cracked Parts

l Cracked Parts

l Cracked Parts

8-3. Welding Power Source Overload Protection

804 476-C

1

Supplementary Protector CB2

CB2 protects unit from overload. If

the unit is using 230 volts ac input

power and CB2 opens, unit shuts

down.
Reset supplementary protector.

1

.

Shown with optional cylinder rack

8-4. Drive Motor Protection And Tip Saver/Short Circuit Protection

A. Drive Motor Protection

Drive motor protection circuit protects drive motor from overload. If drive motor becomes inoperative, release gun trigger and wait until protection circuit

resets allowing drive motor to feed wire again.

B. Tip Saver/Short Circuit Protection

The tip saver/short circuit protection extends contact tip life and protects internal components from damage. If contact tip is shorted to workpiece, the

unit shuts down the welding output. To resume operation, release gun trigger to reset unit. If the contact tip has stuck to the workpiece, release gun

trigger, turn off unit, and remove contact tip from workpiece. Check contact tip and replace if damaged. Turn on unit to continue operation.

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