Taylor-Wharton Auto Fill Laser Pak - Manual (Page 2)

______ Table of Contents
WARNING
3
Safety Precautions for Liquid Nitrogen 3
INTRODUCTION 4
System Description 4
Operation Sequence: Brief Overview 4
PIPING CIRCUITS 6
Vent to Bulk Circuits 7
Fill and Vent to Atmosphere Circuits 8
Pressure Building Circuits 9
Use Circuits 10
Safety Devices 11
Instrumentation Circuits 12
INSTALLATION 13
Handling 13
Pre-Installation Checks 13
Customer Installed Equipment/Piping 14
Electrical 15
Power 15
Error Alarm 15
Bulk Tank Pressure Line 16
OPERATION 17
Controller Operation 17
Graphic Terminal Operation 17
First Fill 19
Normal Operation 20
Long Duration Shutdowns 20
Restart 21
Error Conditions 21
Taking the Auto-Fill Laser Pak Out of Service 22
MAINTENANCE 23
Leak Test 23
Solenoid Valves 23
Safety Device Replacement 24
Instruments 24
Controller 24
Checking Vacuum 25
Trouble-Remedy Guide 26
Replacement Parts 28
APPENDIXES 29
Auto-Fill Laser Pak General Arrangement
Contoller, Auto-Fill Laser Pak