TABLE OF CONTENTS
i
Page
SAFETY……… ............................................................................................................... 1
SERVICE…….. ............................................................................................................... 5
INTRODUCTION .......................................................................................................... 7
Helium Compressor, Model FA-20L .................................................................... 7
PRINCIPLES of OPERATION ........................................................................................ 9
DESCRIPTION ........................................................................................................... 11
Components ..................................................................................................... 11
SPECIFICATIONS ....................................................................................................... 13
FA-20L Compressor (low voltage model) ........................................................... 13
Electrical Characteristics ................................................................................. 13
Power Consumption ........................................................................................ 13
Compressor Control ........................................................................................ 14
Front Panel Connections ................................................................................... 14
Front Panel Mounted Items ............................................................................... 14
Environmental Requirements ............................................................................ 14
Mounting Position .............................................................................................. 15
Heat Rejection to Room .................................................................................... 15
Helium Gas Pressures ..................................................................................... 15
Refrigerant Quality ........................................................................................... 15
Color Codes ...................................................................................................... 15
Required Spacing for Airflow ............................................................................. 15
Optional Spacing ............................................................................................... 15
Maintenance Intervals ....................................................................................... 16
Noise Level ....................................................................................................... 16
Dimensions ....................................................................................................... 16
Weight .............................................................................................................. 16
General Operating Conditions ........................................................................... 16
Supplier Name and Address .............................................................................. 16
Product End of Life Instructions ......................................................................... 16
Regulatory Compliance ..................................................................................... 17
INSTALLATION .......................................................................................................... 21
Introduction ....................................................................................................... 21
Receipt Inspection Instructions .......................................................................... 21
Unpackaging and Product Inspection Instructions ........................................... 22
Compressor Location ....................................................................................... 24
Electrical Supply Connection – Field Wiring Instructions.................................... 25
Compressor Checkout ..................................................................................... 26
Install the Gas Lines ......................................................................................... 26
Install the Cold Head Cable(s) .......................................................................... 28
Remote On/Off cable (Optional Accessory) ...................................................... 28
Prestart Check ................................................................................................... 29