Guardian Telecom Inc. Installation and Operation
Model EXT-401
Package Contents...........................................................................................2
Overview.........................................................................................................3
Features..........................................................................................................3
Warnings.........................................................................................................5
General Requirements ....................................................................................5
EXT 401 Models..............................................................................................6
Options............................................................................................................6
Installing the EXT-401.....................................................................................6
Wiring For Tip & Ring......................................................................................8
Wiring For Peripheral Signaling Device ...........................................................9
Wiring of Tip & Ring with Optional Disconnect Switch ...................................11
Installation of Peripheral Signaling Device with Power Disconnect Switch....12
Fuse Replacement ........................................................................................13
Replacement of Telephone Handset Assembly.............................................14
Replacement of ISH1125 Headset ................................................................15
Operating Instructions ...................................................................................16
Engineering Specifications ............................................................................17
Replacement Parts........................................................................................18
Warranty........................................................................................................20
Disclaimer .....................................................................................................20
Warning.........................................................................................................20
Service Telephone Number...........................................................................20
Feedback ......................................................................................................20
Guardian Product Return...............................................................................21
APPENDIX A - Hazardous Location Classification ........................................22
APPENDIX B - Applications...........................................................................23
Figure 1 - Features..........................................................................................4
Figure 2 - Dimensions .....................................................................................4
Figure 3 - Typical Installation...........................................................................7
Figure 4 - Lower Junction Box Wiring..............................................................8
Figure 5 - Upper Junction Box Wiring..............................................................9
Figure 6 - Typical Installation With Disconnect Switches ...............................10
Figure 7 - Optional Telephone Line Disconnect Switch Wiring.......................11
Figure 8 - Power Disconnect Switch Wiring...................................................12
Figure 9 - Fuse Replacement........................................................................13
Figure 10 - Handset Replacement.................................................................14
Figure 11 - Headset Replacement.................................................................15
Figure 12 - Headset Hook Switch Operation..................................................16
Figure 13 - I.D. and Compliance....................................................................18
Package Contents
(1) Installation & Operation Manual
