.A complete Parts List is available on-line at www.MillerWelds.com

SECTION 6 − MAINTENANCE &TROUBLESHOOTING

6-1. Routine Maintenance

 

 

 

 

 

 

Y Disconnect power

. Maintain more often

 

 

 

 

 

 

before maintaining.

during severe conditions.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

n = Check

Z = Change

~ = Clean

l = Replace

* To be done by Factory Authorized Service Agent

 

Every

3 Months

l Unreadable Labels

~ Weld Terminals

nl Weld Cables

Every

6 OR

Months

~Inside Unit

Reference

6-2. Overload Protection

1

1 Supplementary Protector CB1

CB1 protects unit from overload. If CB1 opens, unit shuts down.

Reset supplementary protector.

802 441

6-3. 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, cycle unit power off and back on 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, but the fan continues to run. 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.

OM-225 311 Page 36

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Miller Electric M-10 Gun Maintenance &TROUBLESHOOTING, Routine Maintenance, Overload Protection, Drive Motor Protection