1-1
4700 Refrigerated Sampler
Service Guide
Section 1 Introduction and General Guidelines
1.1 About this Manual
This manual contains servicing information for the model 4700
indoor/outdoor refrigerated sampler. The manual contains four
sections and three appendices.
Section 1,
Introduction and General Guidelines
, contains safety
and technical information about the sampler. It also provides
general information about upkeep and maintenance, procedures
for removal/replacement of modular components, and procedures
for opening and closing the refrigerator’s rear compartment.
Section 2,
Sample Delivery System
, contains service and
replacement information for the pump and distributor modules
and their components.
Section 3,
Refrigeration System
, provides instructions for trou-
bleshooting, servicing, and replacing the temperature sensors
and refrigeration system and its components.
S e c t i o n 4 ,
C P U a n d Po w e r S u p p ly
, c o n t a i n s a d e t a i le d
description of the CPU board and test points, CPU board tests,
and instructions for removal/replacement of the control panel,
power supply, and line cord.
Section 5,
Electrical Troubleshooting and Diagnostics
, contains
diagnostic testing and troubleshooting steps.
Appendix A,
Electrical Diagrams
, contains wiring and com-
ponent diagrams and an electrical schematic, as well as instruc-
tions for accessing electrical schematics on the Teledyne Isco web
site.
Appendix B,
Replacement Parts List
, contains drawings and
order numbers for all replaceable parts, as well as ordering infor-
mation.
Refer to this appendix for complete listings of all
replaceable parts described in this manual.
Teledyne Isco, Inc.
4700 Superior St.
Lincoln NE 68504
Phon e: (800) 228 -4 373 or
(402) 464-0231
Fax: (402) 465-3001
E-mail:
[email protected]
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