appendix 1 - Victor Technologies
appendix 1 - Victor Technologies
appendix 1 - Victor Technologies
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Set the Power Supply RUN/SET switch to the RUN position<br />
and note the following:<br />
Gas Indicator goes OFF<br />
Gas flow stops<br />
NOTE<br />
This unit has a 20 second pre-purge feature which<br />
begins when the unit is turned ON. As long as the<br />
RUN/SET Switch is in the SET position, the gas<br />
will flow indefinitely. However, once the RUN/<br />
SET Switch is placed in the RUN position, the gas<br />
will stop flowing after approximately 20 seconds<br />
(The 20 seconds begins from the time the unit is<br />
turned on, not from when the unit was put in the<br />
RUN position.)<br />
This completes the Main Input and Internal Power Tests.<br />
If the unit functions as described above, and all correct<br />
then proceed to the Pilot Arc Test below.<br />
If the unit does not function as noted then note the symptom<br />
and proceed to Section 4.07, Main Input and Internal<br />
Power Problems.<br />
C. Pilot Arc Test<br />
Press the torch switch to establish a pilot arc and note the<br />
following:<br />
Gas flows<br />
GAS indicator turns ON<br />
After preflow delay DC indicator turns ON<br />
Pilot arc established<br />
This completes the Pilot Arc Test. If the above are all correct<br />
then proceed to the Main Arc Test below.<br />
If the above does not function as noted then note the<br />
symptom and proceed to Section 4.08, Pilot Arc Problems.<br />
D. Main Arc Test<br />
Press the Torch Switch to establish a pilot arc.<br />
Bring the torch to within 1/8"-3/8" (3.2 - 9.5 mm) of the<br />
workpiece to establish the main cutting arc, and note the<br />
following:<br />
Main cutting arc initiates<br />
This completes the Main Arc Test. If the above are all<br />
correct then the equipment should be operating properly.<br />
If problems still persist then contact Technical Services.<br />
If the above does not function as noted then note the<br />
symptom and proceed to Section 4.09, Main Arc Problems.<br />
4.07 Main Input and Internal Power<br />
Problems<br />
NOTES<br />
The Input PC Board has a neon light on the upper<br />
left hand corner. If AC power is present on L1, L2,<br />
L3 of the Main Contactor, the light will be on.<br />
Refer to the Appendix Pages for PC Board Layouts.<br />
Locate your symptom below:<br />
A. Main power line fuses blow as soon as main<br />
disconnect is closed<br />
1. Input power cable installed incorrectly<br />
a. Refer to Operating Manual, Section 3.07, Input<br />
Power Cable Connections, and connect input<br />
cable<br />
B. Main power line fuses blow when unit is powered<br />
on<br />
1. Input Bridge Faulty<br />
a. Test Input Bridge Rectifier per Section 4.10-D;<br />
repair as necessary<br />
2. Faulty FET/Heatsink Assembly<br />
a. Check per Section 4.10-K; repair as necessary<br />
3. Faulty Input PC Board<br />
a. Test Input PC Board per Section 4.10-D; repair<br />
as necessary<br />
C. AC indicator on front panel of power supply is<br />
OFF<br />
1. Front Panel ON/OFF switch in OFF position<br />
a. Place switch to ON position<br />
2. Main power disconnect not closed<br />
a. Close main power disconnect<br />
3. Main power line fuses blown<br />
a. Replace main power line Fuses<br />
4. Defective input power cable<br />
a. Replace input power cable<br />
5. Improper input power line connections inside Power<br />
Supply<br />
a. Refer to Operating Manual, Section 3.07, Input<br />
Power Cable Connections, and correct connections<br />
if necessary<br />
Manual 0-2697 4-7 SERVICE