Thermo Scientific 8920 User manual

Thermo Scientific
Revco®ExF -86C ULT Upright Freezer
Operating Manual 7048920 Rev. 2
Visit us online to register your warranty
www.thermoscientific.com/labwarranty

Thermo Scientific
Preface
Revco ExF i
Part
Number Description Quantity
122005 Key 2 (4 DD)
380520 Neoprene Cap 2
510016 ¼-20 x 5½” Bolt 2
195763 Retaining Clip 1
370563 Remote Alarm
Connector 1
Packing List
Models Covered
MANUAL NUMBER 7048920
2 31013/FR-2673 6/18/14 RoHS compliant washer on oil separator (expl base dwg, refrig schematics) ccs
1 30948 4/25/14 Updated 902 elec schematic to show correct compressors ccs
0 30814/FR-2603 3/24/14 Release 10 - hinges and mullion (pg 7-6, 7-7) ccs
REV ECR/ECN DATE DESCRIPTION By
Important installer and user information:
A redundant temperature sensing device has been included in this ULT freezer.
This device is a type “T” thermocouple. For convenient access, the thermocou-
ple (Figure 1-3) terminates in an interconnect jack (Figure 1-5) behind the base
front cover. (May be located differently in chests. See Section 1.) It is strongly
recommended that this thermocouple be attached to a redundant 24 hour 7
day monitoring system with alarm capabilities. Connecting the sensor to a
monitoring and alarm system separate from the freezer provides the utmost in
product safety, should the integral system fail. s
* DD = Double Doors
Catalog
Number Model Capacity (cu ft)
Voltage/
Hz
ExF24086V 8920 13 230/50
ExF24086D 8921 13 230/60
ExF24086A 8922 13 120/60
ExF32086A 8923 17 120/60
ExF32086D 8924 17 230/60
ExF32086V 8925 17 230/50
ExF40086V 8926 23 230/50
ExF40086D 8927 23 230/60
ExF40086A 8928 23 120/60
ExF60086D 8929 28 230/60
ExF60086V 8930 28 230/50
ExF21686D 968 DD 13 230/60
ExF28886V 969 DD 17 230/60
ExF36086V 970 DD 23 230/60
Catalog
Number Model Capacity (cu ft)
Voltage/
Hz
ExF24086SSV 6420 13 230/50
ExF24086SSD 6421 13 230/60
ExF24086SSA 6422 13 120/60
ExF32086SSA 6423 17 120/60
ExF32086SSD 6424 17 230/60
ExF32086SSV 6425 17 230/50
ExF40086SSV 6426 23 230/50
ExF40086SSD 6427 23 230/60
ExF40086SSA 6428 23 120/60
ExF60086SSD 6429 28 230/60
ExF60086SSV 6430 28 230/50
ExF21686SSD 5968DD 13 230/60
ExF28886SSD 5969DD 17 230/60
ExF36086SSD 5970DD 23 230/60

Thermo Scientificii Revco ExF
PrefacePreface
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 Fisher 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.
The -86C Freezers (see page i for specific list of models) described in this manual are high performance units
which can be used for research and in situations that directly support medical applications. When these products
are used to support a medical application, it is an accessory to a medical device and is therefore considered as a
medical device in its own right by the regulatory body (e.g. FDA).
This product is intended for use:
• As cold storage in research use.
• As a medical device for diagnostic use (storage of samples not intended to be re-introduced to human body).
Registration: This medical application is considered a Class I medical device by the FDA. This product is
classified as product code – JRM, regulation number 862.2050 and is considered a Class 1 device, 510(K)
exempt.
©2014 Thermo Fisher Scientific. All rights reserved.
Contains Parts and Assemblies
Susceptible to Damage by
Electrostatic Discharge (ESD)
CAUTION

Thermo Scientific Revco ExF iii
Preface
Important operating and/or maintenance instructions. Read the accompanying text carefully.
Potential electrical hazards. Only qualified persons should perform procedures associated with this
symbol.
Extreme temperature hazards, hot or cold. Use special handling equipment or wear special, protective
clothing.
Hot surface(s) present which may cause burns to unprotected skin, or to materials which may be
damaged by elevated temperatures.
Marking of electrical and electronic equipment, which applies to electrical and electronic equipment
falling under the Directive 2002/96/EC (WEEE) and the equipment that has been put on the market
after 13 August 2005.
This product is required to comply with the European Union’s Waste Electrical & Electronic
Equipment (WEEE) Directive 2002/96/EC. It is marked with the WEEE symbol. Thermo Fisher
Scientific has contracted with one or more recycling/disposal companies in each EU Member State
European Country, and this product should be disposed of or recycled through them. Further
information on Thermo’s compliance with this directive, the recyclers in your country and
information on Thermo Scientific products will be available at www.thermofisher.com.
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.

Thermo Scientificiv Revco ExF
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
1-800-438-4851 Toll Free, U.S. and Canada
1-877-213-8051 FAX
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[e-mail] Tech Support Email Address
Certified Service Web Page
Thermo Fisher Scientific
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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
www.unitylabservices.com

Revco ExF vThermo Scientific
Table of Contents
Installation and Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
Control Panel Keys, Displays, Indicators . . . . . . . . . . . . . . . . . . . . . .1-4
Operation of the Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5
Install Freezer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5
Choose Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5
Install Wall Bumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6
Remote Alarm Contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6
Install Shelves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6
Connect Unit to Electrical Power . . . . . . . . . . . . . . . . . . . . . . . . . .1-7
Attach Power Cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7
Freezer Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8
Set Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8
Set Low Temperature Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9
Set High Temperature Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9
Run Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10
Calibrate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
Calibrate Control Probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
Temperature Stabilization Periods . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Probe Failure Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
High Stage System Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Clean Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Clean Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Clean Water-cooled Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
Defrost Chamber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
Prepare Unit for Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
Clean Door Gasket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
Vacuum Relief Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
Replace Battery(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5
Check Battery(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5
PREVENTIVE MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . .4-6
Section 1
Section 2
Section 3
Section 4

vi Revco ExF Thermo Scientific
Factory Installed Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
BUS - Back Up System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
Install Vent Stack, Solenoid and Injection Assembly . . . . . . . . . . . .5-1
Install Temperature Probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3
Connect Probe/Solenoid Harness . . . . . . . . . . . . . . . . . . . . . . . . . .5-4
BUS Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-5
Set Optional BUS Set Point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6
Configure Optional BUS (Back-Up System) . . . . . . . . . . . . . . . . . .5-6
Test BUS Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-7
Clean Vent Stack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-7
Disconnect Fitting Asm. and Transfer Hose . . . . . . . . . . . . . . . . . . .5-7
Chart Recorder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-7
Recorder Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-8
Change Recorder Temperature Range . . . . . . . . . . . . . . . . . . . . . . .5-8
Installing the Chart Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-8
Water-cooled Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-9
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Single Door Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Double Door Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-3
Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 - 1
Refrigeration Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 - 1
Electrical Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 - 1
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 - 1
Handling Liquid Nitrogen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A - 1
Handling Liquid CO2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B - 1
First Aid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C - 1
Table of Contents
Section 5
Section 6
Section 8
Section 7
Section 9
Section 10
Appendix

Revco ExF 1-1Thermo Scientific
Section 1 Installation and Start-up
• Control panel - keypad, displays and indicators
• BUS (Optional Back Up System) control panel
• Optional temperature recorder or datalogger
Optional Back Up
System Controls
Temperature
Recorder
(Optional)
Control Panel
Figure 1-1. Freezer Front View Components

1-2 Revco ExF Thermo Scientific
Section 1
Installation and Start-Up
Optional Back-up
System Connections
Power Switch
(mains
disconnect)
Power Inlet
Remote Alarm
Contacts
Wall Bumper
(pre-tapped holes)
Figure 1-2. Freezer Rear View Components
Shelf
Bracket
Sealant
(Caution: This is a critical seal.
Seal must be maintained.)
Optional - Recorder Probe/Datalogger Probe
Control RTD/Redundant Type T
Thermocouple Probe
Optional Miscellaneous Accessories Probe
Figure 1-3. Chamber Probe(s)
• Remote alarm contacts
• Power inlet for power cord connection
• Optional BUS connections for probe and solenoid
• Power switch (mains disconnect)

Revco ExF 1-3Thermo Scientific
Section 1
Installation and Start-Up
• Vacuum relief port - pressure equalization port
• Probe cover - houses control, optional recorder, datalogger, or
miscellaneous accessory probes
• Battery mounting bracket(s)
• Battery power switch (freezer and BUS)
• Freezer battery
• Optional BUS battery
• Freezer filter location
Vacuum
Relief Port
Chamber
Probe Cover
Figure 1-4. Vacuum Relief and Probe Cover Location
O
Battery power
switch To
remove filter
Thermocouple
interconnect jack
Battery mounting
bracket
Freezer battery
and optional BUS battery
Figure 1-5. Battery(s) location and switch