Welch Vacuum 2028 Self-Cleaning Dry Vacuum System - Manual (Page 3)

TABLE OF CONTENTS
SECTIONS PAGE
Section 01 - Safety Information
1.10 To Prevent Injury 04
1.20 To Reduce Risk of Electrical Shock 04
1.30 To Reduce Risk of Electrocution 04
1.40 To Reduce Risk of Explosion or Fire 04
Section 02 - Installation
2.10
Introduction 05
2.20 Electrical Power 06
2.30 Traps 07
Section 03 - Component, System and Unit Operations
3.10
Component Description 09
3.20 Control Locations 09
3.30 Vacuum Gauge / System Control Function 10
3.40 Vacuum Level Regulation 16
3.50 Gas Ballast Valve 16
3.60 Rapid Response Vacuum Adjustment 16
3.70 Inlet and Exhaust Separators 17
3.80 Unit Start Procedure and Operation 17
Section 04 - Maintenance
4.10
General Maintenance 18
Section 05 - Calibration
5.10
Calibration for Model 2027 only 18
Section 06 - Troubleshooting
6.10
Vacuum Problems 20
Section 07 - Specifi cation
7.10
Pump Specifi cation Table 23
Section 08 - Drawings, Parts List and Exploded View
8.10
Dimensional Drawing 24
8.11 Schematic Wiring Diagram for Models 2025 and 2026 24
8.12 Schematic Wiring Diagram for Model 2027 25
8.13 Schematic Wiring Diagram for Model 2028 25
8.14 Parts List and Exploded View for Dry Vacuum System 27
8.15 Parts List and Exploded View for Repair Kits 28
Section
09 - Warranty 29
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