
HF28 DC RESISTANCE WELDING SYSTEM
vi
990-372
CONTENTS (Continued)
Page
Chapter 5. Operating Instructions
Section I: Introduction ........................................................................................................................... 5-1
Before
You
Start
.............................................................................................................................. 5-1
Pre-Operational Checks ................................................................................................................... 5-1
Connections
.............................................................................................................................. 5-1
Power
..................................................................................................................................... 5-1
Compressed
Air
........................................................................................................................ 5-1
Initial Setup
..................................................................................................................................... 5-2
Section II. Operation .............................................................................................................................. 5-3
Single-Pulse
Weld
Schedule
............................................................................................................ 5-3
Upslope/Downslope Weld Schedule ............................................................................................... 5-5
Dual-Pulse Weld Schedule .............................................................................................................. 5-7
Section III. Using the Weld Monitor ..................................................................................................... 5-9
Section IV. Active Part Conditioning .................................................................................................. 5-13
Section IV. Resistance Set ................................................................................................................... 5-15
Section VI. Pre-Weld Check ................................................................................................................ 5-17
Section VII. Weld To A Limit ............................................................................................................. 5-19
Section VIII. Weld Stop ....................................................................................................................... 5-21
Section IX. Programming Relays ......................................................................................................... 5-23
Chapter 6. Maintenance
Section I. Introduction
......................................................................................................................... 6-1
General Kinds of Problems .............................................................................................................. 6-1
Alarm
Messages
............................................................................................................................... 6-1
Section II. Troubleshooting ................................................................................................................... 6-2
Troubleshooting
............................................................................................................................... 6-2
Alarm
Messages
............................................................................................................................... 6-3
Section III. Maintenance ........................................................................................................................ 6-9
Electrode
Maintenance
.................................................................................................................... 6-9
Parts
Replacement
........................................................................................................................... 6-9
Section IV. Repair Service ................................................................................................................... 6-10
Summary of Contents for 1-288-01
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