Thermo Scientific 8100 Series Operating instructions

Model 8100 Series
Upright Blast Freezer
Operating and Maintenance Manual
7008101 Rev. 6

Thermo ScientificThermo Scientific
MANUAL NUMBER 7008101
6 25758/FR-1938 27Aug2009 Added production loading and defrost info to Section 2, pgs 2-3 & 2-4 ccs
5 FR-1938 04Jun2008 Updated specs w/ weight, revised schematics w/ power connections ccs
4 SI-9923 12Oct2007 Changed thermal expansion valve from 992314 to 220791 ccs
-- 24115/FR-1938 12Oct2007 Updated door switch to a 1950145 magnetic switch ccs
3 23830/FR-1938 26Sept2007 Updated door switch on 8106 from 360157 to 360277 w/ 360278 actuator ccs
2 23782/FR-1938 23Aug2007 Updated schematics (220778 coil), condensing unit specs ccs
1 23830/FR-1938 19Jan2007 Revised for Thermo approved install and set-up, connection limitation, schematics ccs
0 22697 8 July 2005 New operating manual aks
REV ECR/ECN DATE DESCRIPTION By
Preface
Blast Freezer i
Preface

Thermo Scientific Blast Freezer iiThermo Scientific
Preface
Important Read this instruction manual. Failure to read, understand and follow the instructions in this manual
may result in damage to the unit, injury to operating personnel, and poor equipment performance. s
Caution All internal adjustments and maintenance must be performed by qualified service personnel. s
Material in this manual is for information purposes only. The contents and the product it describes are subject to
change without notice. Thermo Scientific makes no representations or warranties with respect to this manual. In
no event shall Thermo be held liable for any damages, direct or incidental, arising out of or related to the use of
this manual.
©2005 Thermo Scientific. All rights reserved.

Thermo Scientificiii Blast Freezer Thermo Scientific
Preface
Do You Need Information or Assistance on
Thermo Scientific Products?
If you do, please contact us 8:00 a.m. to 6:00 p.m. (Eastern Time) at:
1-740-373-4763 Direct
1-866-984-3766 Toll Free, U.S. and Canada
1-740-373-4189 FAX
http://www.thermo.com Internet Worldwide Web Home Page
Service E-Mail Address
Thermo Scientific
Controlled Environment Equipment
401 Millcreek Road, Box 649
Marietta, OH 45750
Our staff can provide information on pricing and give you quotations. We can
take your order and provide delivery information on major equipment items or make
arrangements to have your local sales representative contact you. Our products are listed on the
Internet and we can be contacted through our Internet home page.
Our staff can supply technical information about proper setup, operation or
troubleshooting of your equipment. We can fill your needs for spare or replacement parts or
provide you with on-site service. We can also provide you with a quotation on our Extended
Warranty for your Thermo Scientific products.
Whatever Thermo Scientific products you need or use, we will be happy to discuss your
applications. If you are experiencing technical problems, working together, we will help you
locate the problem and, chances are, correct it yourself...over the telephone without a service
call.
When more extensive service is necessary, we will assist you with direct factory trained
technicians or a qualified service organization for on-the-spot repair. If your service need is
covered by the warranty, we will arrange for the unit to be repaired at our expense and to your
satisfaction.
Regardless of your needs, our professional telephone technicians are available to assist you
Monday through Friday from 8:00 a.m. to 6:00 p.m. Eastern Time. Please contact us by
telephone or fax. If you wish to write, our mailing address is:
International customers, please contact your local Thermo Scientific distributor.
Sales Support
Service Support
[e-mail]

Thermo Scientific Blast Freezer ivThermo Scientific
Preface
Alerts the user to important operating and/or maintenance instructions.
May be used alone or with other safety symbols. Read the accompanying
text carefully.
Potential electrical hazards. Only qualified persons should perform the
instructions and procedures associated with this symbol.
Hazard. Do not touch. Instructions associated with this symbol should
only be carried out when using special handing equipment or when
wearing special, protective clothing.
Potential biological hazards. Proper protective equipment and procedures
must be used when following instructions associated with this symbol.
Reference O.S.H.A. Regulation 1910-1030.
Potentially hazardous energy. Equipment being maintained or serviced
must be turned off and locked off to prevent possible injury. Reference
O.S.H.A. Regulation 1910-147.
Hot surface(s) present which may cause burns to unprotected skin or to
materials which may be damaged by elevated temperatures
4Always use the proper protective equipment (clothing, gloves, goggles,
etc.)
4Always dissipate extreme cold or heat and wear protective clothing.
4Always follow good hygiene practices.
4Each individual is responsible for his or her own safety.

Blast Freezer vThermo Scientific
Table of Contents
Set-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 - 1
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 1
Temperature Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 1
Set Point Adjustment Screwdriver . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 2
Blower Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 2
Mode Select Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 2
Product Installation into Drawers . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 3
Defrosting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 4
Routine Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 - 1
Refrigeration System Maintenance . . . . . . . . . . . . . . . . . . . . . . . . .3 - 1
Defrosting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 - 1
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 - 1
Servicing the Refrigeration System . . . . . . . . . . . . . . . . . . . . . . . . .4 - 1
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 - 1
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 - 1
Refrigeration Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 - 1
Electrical Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 - 1
Warranty Information
Section 1
Section 2
Section 3
Section 4
Section 5
Section 6
Section 7
Section 8

Blast Freezer 1-1Thermo Scientific
Section 1 Set-Up
Installation and start-up must be performed by Thermo approved
personnel only. s
The distance between the condensing unit and the blast freezer can be no
more than 100 equivalent feet (includes tubing, elbows, traps, etc.).

Blast Freezer 2-1Thermo Scientific
Section 2 Operation
The electronic temperature controller provides a constant display of the
freezer’s temperature. The numerical LED display provides readout of the
actual freezer chamber temperature in increments of 1°C.
The numerical LED display indicates the temperature setpoint when the
Press-To-Set button is pressed. To adjust the temperature setpoint, press
the Press-To-Set button and adjust the setpoint setscrew, using the
adjustment screwdriver shipped with the operating manual.
The temperature controller board controls power to the compressor and
the cooling fan. The temperature controller must be set and maintained
within the normal temperature specifications of 0°C to -50°C.
Adjustment of the temperature controller below the normal temperature
specification (-50°C) will void the warranty. s
Temperature
Controller
Figure 2-1. Temperature Controller