Red-D-Arc EXTREME 360, Техническое руководство

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Always check unit before applying power (see Sections 6-1 thru 6-18).
TM-229 409 Page 34 Extreme 360
6-21. Troubleshooting Table
.
See Section 6-24 for test points and values and
Section 9 for parts location.
.
Use MILLER Testing Booklet (Part No. 150 853)
when servicing this unit.
Trouble Remedy
No weld output; unit completely
inoperative.
Follow Pre-Power Flowchart, and replace any failed components (see Section 6-2).
Place line disconnect switch in On position (see Section 3-2 or 3-3).
Check and replace line fuse(s), if necessary, or reset circuit breaker (see Sections 3-2 and 3-3).
Check for proper input power connections and check condition of power cord
(see Section 3-2 or 3-3).
Check continuity of Power switch S1 and replace if necessary (see Section 6-8).
Check control transformer T2 for signs of winding failure. Check continuity across windings, and
check for proper connections. Check secondary voltages. Replace T2 if necessary.
Check control/auxiliary power board PC1 and connections, and replace if necessary (see Pre-Power
Checks in Sections 6-13 thru 6-18, and also see Section 6-25).
Check power interconnect board PC2 and connections, and replace if necessary (see Pre-Power
Checks in Sections 6-13 thru 6-18, and also see Section 6-27).
Check front panel/display board PC3 and connections, and replace if necessary (see Section 6-29).
No weld output; meter display On. Follow Pre-Power Flowchart and replace any failed components (see Section 6-2).
Unit overheated and HELP 3 or HELP 5 screen is displayed. Allow unit to cool with fan On
(see Section 6-22).
If a remote accessory is connected to remote 14 receptacle RC50:
Check accessory contact closure (continuity), and replace accessory if necessary.
Check accessory amperage control potentiometer resistance and connections,
and replace accessory if necessary.
Check input and output voltages of hall device HD1 (see Section 6-24). Replace HD1 if necessary.
Check control/auxiliary power board PC1 and connections, and replace if necessary (see Pre-Power
Checks in Sections 6-13 thru 6-18, and also see Section 6-25).
Check front panel/display board PC3 and connections, and replace if necessary (see Section 6-29).
Low weld output with no control. Check input and output voltages of hall device HD1 (see Section 6-24). Replace HD1 if necessary.
Check control/auxiliary power board PC1 and connections, and replace if necessary (see Pre-Power
Checks in Sections 6-13 thru 6-18, and also see Section 6-25).
Check front panel/display board PC3 and connections, and replace if necessary (see Section 6-29).
Maximum weld output with no control. Check input and output voltages of hall device HD1 (see Section 6-24). Replace HD1 if necessary.
Check control/auxiliary power board PC1 and connections, and replace if necessary (see Pre-Power
Checks in Sections 6-13 thru 6-18, and also see Section 6-25).
Check front panel/display board PC3 and connections, and replace if necessary (see Section 6-29).
Limited output and low open circuit
voltage (OCV).
Check for proper input and output connections
If a remote accessory is connected to remote 14 receptacle RC50:
Check accessory contact closure (continuity), and replace accessory if necessary.
Check accessory amperage control potentiometer resistance and connections,
and replace accessory if necessary.
Check input and output voltages of hall device HD1 (see Section 6-24). Replace HD1 if necessary.
Check control/auxiliary power board PC1 and connections, and replace if necessary (see Pre-Power
Checks in Sections 6-13 thru 6-18, and also see Section 6-25).
Check front panel/display board PC3 and connections, and replace if necessary (see Section 6-29).
Check if Low Open Circuit Voltage Stick Mode is enabled (see Section 6-23).