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Block Diagram - Vulcan-Hart A-130 Service Manual

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Owner's/operator's manual (6 pages)

Table Of Contents

Table of Contents

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SECTION

- TROUBLESHOOTING - A-CONTROL

. BLOCK DIAGRAM

120/240V

60/50Hz

Power Supply

Line

D1,C1,R11

Cabinet

Return

+6.8V

-8.6V

Set Point Pot

Comparator,

Rate Control Pot

Power Supply,

Triac Driver

U2

Amplifier U1

Thermocouple

Power Triac

25A, 400V

Feedback

Muffle

2 – 3

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Troubleshooting

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