VWR VWR24086A User manual

VWR®ULT Upright Freezers
Version: 4
Issued: November 12, 2015
INSTRUCTION MANUAL
North American
Catalogue
Number
European
Catalogue
Number Model Number
Size
(cu ft)
Size
(liters) Box Voltage Temperature
-86°C FREEZERS
10160-724 -- VWR24086A 13 368 240 120V/60Hz -86°C
10160-726 -- VWR24086D 13 368 240 208-230V/60Hz -86°C
-- 471-1140 VWR24086V 13 368 240 230/50Hz -86°C
10160-728 -- VWR32086A 17 490 320 120V/60Hz -86°C
10160-730 -- VWR32086D 17 490 320 208-230V/60Hz -86°C
-- 471-1141 VWR32086V 17 490 320 230/50Hz -86°C
10160-732 -- VWR40086A 23 651 400 120V/60Hz -86°C
10160-734 -- VWR40086D 23 651 400 208-230V/60Hz -86°C
-- 471-1142 VWR40086V 23 651 400 230V/50Hz -86°C
10160-736 -- VWR60086D 28 793 600 208-230V/60Hz -86°C
-- 471-1143 VWR60086V 28 793 600 230/50Hz -86°C
-40°C FREEZERS
10160-748 -- VWR24040A 13 368 240 120V/60Hz -40°C
10160-750 -- VWR24040D 13 368 240 208-220V/60Hz -40°C
-- 471-1135 VWR24040V 13 368 240 230V/50Hz -40°C
10160-752 -- VWR32040A 17 490 320 120V/60Hz -40°C
10160-754 -- VWR32040D 17 490 320 208-220V/60Hz -40°C
-- 471-1136 VWR32040V 17 490 320 230V/50Hz -40°C

VWR International
MANUAL NUMBER 7085602
4 40797 4/7/16 Updated Low Battery alarm to 8 hours, chart on pg 5-1 ccs
3 40544 12/9/15 BUS information (preventive maintenance and BUS control panel and operation) ccs
2 40445 12/7/15 Added models, clarification, warranty ccs
1 31653 1/12/15 Release 20 - color chg, manual format, added models ccs
VERSION ECR/ECN DATE DESCRIPTION By
Preface
Upright Freezer i
Important installer and user information:
A redundant temperature sensing device has been included in this ULT freez-
er. This device is a type “T” thermocouple. For convenient access, the thermo-
couple (Figure 2-3) terminates in an interconnect jack (Figure 2-5) behind the
base front cover. (May be located differently in chests. See Section 2.) 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.
Legal Address of Manufacturer Legal Address of Manufacturer
United States Europe
VWR International, LLC VWR International bvba
100 Matsonford Rd Researchpark Haasrode 2020
Radnor, PA 19087 Geldenaaksebaan 464
800-932-5000 B-3001 Leuven
http://www.vwr.com + 32 16 385011
http://be.vwr.com
Country of origin: United States
Description Quantity
Key 2
Neoprene Cap 2
1/4-20 x 5-1/2” Bolt 2
Retaining Clip 1
Remote Alarm Connector 1
Packing List

VWR Internationalii Upright Freezer
Preface
Contains Parts and Assemblies
Susceptible to Damage by
Electrostatic Discharge (ESD)
CAUTION
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. VWR International makes no representations or warranties with respect to this
manual. In no event shall VWR be held liable for any damages, direct or incidental, arising out of or related to
the use of this manual.
Intended Use: The VWR freezers (see cover page for specific models) described in this manual are high
performance units for professional use. These products are intended for use as cold storage in research use and
as a general purpose laboratory freezer, storing samples or inventory at operating temperatures between -50°C
and -80°C, or -10°C and -50°C, depending on model.
It is not considered a medical device ands has therefore not been registered with a medical device regulatory
body (e.g. FDA); that is, it has not evaluated for the storage of samples for diagnostic use or for samples to be
re-introduced to the body.
This unit is not intended for use in classified hazardous locations, not to be used for the storage of
flammable inventory.
©2015 VWR® International. All rights reserved.

VWR International Upright Freezer 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.
Equipment being maintained or serviced must be turned off and locked off to prevent possible injury.
Extreme temperature hazards, hot or cold. Use special handling equipment or wear special, protective
clothing.
This equipment is marked with the crossed out wheeled bin symbol to indicate that this equipment
must not be disposed of with unsorted waste.
Instead it's your responsibility to correctly dispose of your equipment at lifecycle -end by handling it
over to an authorized facility for separate collection and recycling. It's also your responsibility to
decontaminate the equipment in case of biological, chemical and/or radiological contamination, so as
to protect from health hazards the persons involved in the disposal and recycling of the equipment.
For more information about where you can drop off your waste of equipment, please contact your
local dealer from whom you originally purchased this equipment.
By doing so, you will help to conserve natural and environmental resources and you will ensure that
your equipment is recycled in a manner that protects human health.
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.

VWR Internationaliv Upright Freezer
Preface
Do You Need Information or Assistance on
VWR Products?
The VWR Sales Group 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.
Visit VWR’s website at vwr.com for:
• Complete technical service contact information
• Access to VWR’s Online Catalogue, and information about accessories and related
products.
• Additional product information and special offers.
• Contact us: For information or technical assistance, contact your local VWR
representative, or visit vwr.com.
VWR can supply technical information about proper setup, operation or troubleshooting of
your equipment. We can fill your needs for replacement parts or provide you with on-site service.
We can also provide you with a quotation on our Extended Maintenance Program for your products.
Whatever VWR 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 trained technicians or a
qualified service organization for on-the-spot repair. If your service need is covered by the VWR
Scientific Products warranty, we will arrange for the unit to be repaired at our expense and to your
satisfaction.

Table of Contents
Product Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
Control Panel Keys, Displays & Indicators . . . . . . . . . . . . . . . . . . . .2-3
Keypad Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
Install the Freezer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5
Choose the Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5
Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5
Install the Shelves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6
RS-232 Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6
Install the Wall Bumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6
Remote Alarm Contacts and Analog Output . . . . . . . . . . . . . . . . .2-7
Attach the Power Cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-8
Connect Unit to Electrical Power . . . . . . . . . . . . . . . . . . . . . . . . . .2-8
Freezer Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-9
Set the Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . .2-10
Set the High Temperature Alarm . . . . . . . . . . . . . . . . . . . . . . . . .2-10
Set the Low Temperature Alarm . . . . . . . . . . . . . . . . . . . . . . . . . .2-11
Access Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-11
Run Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-11
Calibrate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Calibrate the Control Probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Calibrate the Optional Sample Probe . . . . . . . . . . . . . . . . . . . . . . . . .3-2
Temperature Stabilization Periods . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
High Alarm Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Low Alarm Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
System Battery Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
BUS Battery Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
Display Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
Clear High Stage Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
Set Access Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
RS485 Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
Back-Up System Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
Cold Excursion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
Warm Excursion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
Reset Excursion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
Section 1
Section 2
Section 4
Section 3
Upright Freezer vVWR International

vi Upright Freezer VWR International
Table of Contents
Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
Lost Communication Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
Micro Board Failure Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
Multiple Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
High Stage System Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Clean Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Clean the Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Clean the Water-cooled Condenser . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
Clean in Place (CIP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
Prepare the Unit for Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
Long Term Storage with Water-cooled Condenser . . . . . . . . . . . . .6-3
Defrost the Chamber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-3
Clean the Door Gasket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4
Vacuum Relief Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4
Vacuum Relief Port Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . .6-5
Replace the Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-6
Factory Installed Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
Back-Up System (BUS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
Install Vent Stack, Solenoid & Injection Asm. . . . . . . . . . . . . . . . .7-2
Install the Temperature Probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-3
Connect the Probe/Solenoid Harness . . . . . . . . . . . . . . . . . . . . . . .7-4
BUS Operation and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . .7-5
Chart Recorder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-7
Change the Recorder Temperature Range . . . . . . . . . . . . . . . . . . . .7-8
Calibrate the Recorder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-9
Water-cooled Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-10
Water Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-12
Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1
Handling Liquid Nitrogen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-2
Handling Liquid Carbon Dioxide . . . . . . . . . . . . . . . . . . . . . . . . . . .A-4
First Aid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-4
Section 5
Section 6
Section 7
Section 8
Appendix

Section 1 Product Specifications
Upright Freezer 1-1VWR International
Temperature Range -50°C (-58°F) to -86°C (-123°F) or -10°C (-14°F) to -40°C (-40°F) in an 18°C to 28°C (64.4°F to 82.4°F) ambient
Capacity
13.0 cu. ft. (368.1 liters)
17.3 cu. ft. (489.9 liters)
23.0 cu. ft. (651.3 liters)
28.0 cu. ft. (792.8 liters)
Refrigeration 2545 BTUH (Two compressors for -86C units), (One compressor for -40C units)
Insulation CFC-free, foamed-in-place urethane: minimum 5.0" (12.7cm) cabinet; 4.5” (11.4 cm) door
Electrical -
nominal voltage ±10% 208-230VAC, 60 Hz, 12 FLA 230VAC, 50 Hz, 12 FLA 120VAC, 60 Hz, 16 FLA
Breaker Requirements 15 Amp, Dedicated Circuit,
15 Amp Time Delay Breaker
15 Amp, Dedicated Circuit,
15 Amp Time Delay Breaker
20 Amp, Dedicated Circuit,
20 Amp Time Delay Breaker

1-2 Upright Freezer VWR International
Section 1
Specifications
Certifications
Declaration of Conformity is available on request as a separate docu-
ment. Contact VWR for information.
Safety Specifications
Indoor Use Only
Altitude - Up to 2,000 meters
Temperature - 15°C to 32°C
Humidity - Maximum RH 80% for temperatures up to 31°C, decreas-
ing linearly to 50% RH at 40°C
Mains Supply Fluctuations - Mains supply voltage fluctuations not to
exceed ±10% of the nominal voltage
Installation Category II 1
Pollution Degree 2 2
Class of Equipment I
1 Installation category (overvoltage category) defines the level of transient overvoltage which the
instrument is designed to withstand safely. It depends on the nature of the electricity supply and its
overvoltage protection means. For example, in CAT II which is the category used for instruments in
installations supplied from a supply comparable to public mains such as hospital and research
laboratories and most industrial laboratories, the expected transient overvoltage is 2500V for a
230V supply and 1500V for a 120V supply.
2 Pollution degree describes the amount of conductive pollution present in the operating
environment. Pollution degree 2 assumes that normally only non-conductive pollution such as dust
occurs with the exception of occasional conductivity caused by condensation.

Upright Freezer 2-1VWR International
Section 2 Overview
Control Panel
Optional
Back-Up System
Controls
Optional
Temp Recorder
Optional Back-up
System Connections
RS-232 or RS-485
Interface
Power Switch
(mains disconnect)
Power Inlet
Wall Bumper
(pre-tapped holes)
Remote Alarm Contacts
and Analog Output
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 2-1. Front View
Figure 2-2. Rear View
Figure 2-3. Chamber Probes
Figure 2-1
• Control Panel - keypad,
displays and indicators
• BUS (Optional Back Up
System) panel
• Optional temperature
recorder (7 day, one pen)
Figure 2-2
• Remote alarm contacts
and selectable analog
output connection (0-1V,
4-20mA (default), 0-5V)
• Power inlet for power
cord connection.
• Optional BUS
connections for probe and
solenoid
• RS-232 (default) or RS-
485 interface
• Power switch (mains
disconnect)

2-2 upright freezer VWR International
Section 2
Overview
Figure 2-4
• Vacuum relief port - pressure equalization port
• Probe cover houses control, optional recorder, redundant alarm probes.
Figure 2-5
• Battery mounting bracket(s)
• Battery power switch (freezer and BUS)
• Freezer battery
• Optional BUS battery
• Freezer filter location
Figure 2-4. 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 2-5. Battery(s) Location and Switch
Chamber Probe
Cover
Vacuum Relief
Port

Upright Freezer 2-3VWR International
Section 2
Overview
• Mode Select Switch - Used to select Run, Settings, Calibrate and
System Configuration Modes.
Mode Select Indicators -
Run: Run Menu
Settings: Set Points Menu
Calibrate: Calibrate Menu
Configuration: Configuration Menu
• Temperature Display - Displays temperature in degrees Celsius.
• Alarm Indicator - Light pulses on/off during an alarm condition of the
cabinet.
• Mute - Silences the audible alarm.
• Low Battery - indicates a low battery condition of the freezer battery.
• Hot Condenser - indicates a hot condenser condition.
• Message Center - displays system status and alarms.
• Scroll for Parameters Arrows - moves the operator through the choices
of the selected mode.
• Up and Down Arrows - Increases or decreases values, toggles between
choices.
• Enter Arrow - Stores the value into memory.
Control Panel Keys,
Displays & Indicators
Figure 2-6. Control Panel
Mute
Mode Alarm
Indicator
Temperature Display
Enter ArrowUp and Down Arrows
Scroll for Parameters Arrows
Low Battery
Hot
Condenser

This upright freezer has four basic modes which allow freezer setup: Run,
Settings, Calibrate and Configuration.
Run is the default mode for the freezer during normal operation.
Settings is used to enter system set points for freezer operation.
Calibrate is used to calibrate various system parameters.
Configuration allows for custom setup of various options.
The chart below shows the selections under each of the modes.
Scroll for Parameters Arrows: Steps the operator through the parameters
of SETTINGS, CALIBRATE and CONFIGURATION Modes. The
right arrow goes to the next parameter, the left arrow returns to the
previous parameter.
Up Arrow: Increases or toggles the parameter value that has been selected
in the SETTINGS, CALIBRATE, and CONFIGURATION Modes.
Enter: Must press Enter key to save to memory any changed values.
Down Arrow: Decreases or toggles the parameter values that have been
selected in the SETTINGS, CALIBRATE and CONFIGURATION
Modes.
Mute Key: Press to silence the audible alarm. See Section 4 for alarm
ringback times.
2-4 Upright Freezer VWR International
Section 2
Overview
Keypad Operation
Run Settings Calibrate Configuration
Default Mode
System Ok Control Set Point Control Probe High Alarm Test
Line Voltage High Alarm Set Point Optional Sample
Probe Low Alarm Test
Compensated Voltage Low Alarm Set Point System Battery Test
HSHX Temperature Optional Back Up
System Set Point BUS Battery Test
Display Temperature
Clear High Stage
Alarm
Set Access Code
RS485 Address
BUS type CO2 or LN2
Cold Excursion
Warm Excursion
Reset Excursion

Message Center: Displays the system status (Mode) at all times. Displays
SYSTEM OK during normal operation, or alarm messages if the system
detects an alarm condition. See the Alarms section.
Caution If tipped more than 45°, allow the unit to set upright for 24 hours
before start up. s
To remove the freezer from the pallet, use the ½" wrench to remove all the
bolts securing the shipping bracket to the pallet.
Remove the shipping bracket. Remove the ramp boards from the pallet
and place the slotted end over the ramp brackets on the pallet. The
support blocks on the ramps will be facing down. Before moving the
freezer, make sure the casters are unlocked and moving freely. Align the
caster with the ramp boards. Use adequate personnel to roll the freezer off
the pallet.
The freezer can be easily pushed to the desired approved location,
described below. If necessary, the doors and lower front panel may be
opened to move the unit through tight openings. When the freezer is in
position, set the front caster brakes.
Caution If the factory installed option water-cooled condenser is present,
do not turn the freezer on without water connected and flowing. Damage
to the refrigeration system could occur within 5 minutes if water is not
connected and flowing on unit start-up. Refer to Section 6. s
Locate the freezer on a firm, level surface in an area with an ambient
temperature between 18°C and 28°C. Provide ample room to reach the
mains disconnect switch (power switch) located on the rear of the freezer.
Caution The freezer must not be moved with the product load inside. s
Caution For proper ventilation and airflow, a minimum clearance of 5” at
the rear and top, and a clearance of 8” on the side of the freezer is
required. Allow adequate space in front of the freezer for door opening. s
Upright Freezer 2-5VWR International
Section 2
Overview
Displays
Install the Freezer
Choose the Location

The parts bag, located inside the cabinet, contains the following parts.
Install the bolts into the pre-tapped holes on the back of the compressor
section. Install a neoprene cap on each bolt. Refer to Figure 1-2 for the
location of the pre-tapped holes.
Install the shelf clips into the shelf pilasters (front and back) at the desired
shelf level. Install the shelves in the cabinet onto the clips.
Note On units having the optional 5 inner door option, refer to the
instructions accompanying the inner door kit.
This upright freezer has a data communications interface. The factory
default setting is RS-232.
The wiring identification for the interface is shown in Figure 2-7. One
nine pin, sub "D" style connector is located on the back of the freezer. See
Figure 1-2 for the location of the connector on the freezer.
The freezer transmits temperature information every 60 minutes. A
standard DB9 serial extension cable can be used to connect the freezer to a
serial device. Some serial devices may require a null modem adapter.
Data format:
Baud . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1200
Data bits . . . . . .8 (7 bit ASCII with leading zero)
Start bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Stop bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Parity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .none
2-6 Upright Freezer VWR International
Section 2
Overview
Install the Wall Bumpers
Quantity Description Purpose
21/4-20x5-1/2” Bolt Wall Bumper
2Neoprene Cap Cap Protector
Install the Shelves
RS-232 Communications
Figure 2-7. Wiring Identification

The data transfer sequence is transmitted in the following format. X refers
to numerical temperature data.
(NUL) (-) XXX (SP) C (SP) (Error Message) (SP) (LF) (CR) (EOT) (SP)
In the event of a CNTRLFAIL, Er07, or the control probe is out of range
error, the numerical temperature data (XXX) in the transmission would be
replaced by T_ERR.
If no alarm condition exists, spaces will be sent. A total of 20 characters
will be sent.
SP - Space LF - Line feed
CR - Carriage return EOT - End of text (4)
NUL - Null character (00)
If an alarm condition does exist, “Error Message” in the protocol will be
replaced by the following:
UNDERTEMP (temperature above the low alarm setpoint)
OVERTEMP (temperature below the high alarm setpoint)
PWRFAIL (AC power failure)
CNTRLFAIL (Control probe failure)
Er07 (micro failure)
HSHX FAIL (Heat exchanger failure)
HOT COND (Hot condenser)
This upright freezer has remote alarm contacts and analog output. See
Figure 2-2 for the location of the remote alarm contacts. The remote
alarm connector is located in the parts bag provided with the manual. It
must be installed if connecting the freezer to an alarm system. After
installing the wiring from the alarm system to the connector, install the
connector to the freezer microboard and secure with the two screws
provided.
Upright Freezer 2-7VWR International
Section 2
Overview
RS-232 Communications
(continued)
Remote Alarm Contacts
and Analog Output

The remote alarm provides a NO (normally open) output, a NC (normally
closed) output and COM (common). The contacts will trip on a power
outage, high temperature alarm or low temperature alarm. They will also
trip on high stage, control probe and microboard failures. Figure 2-8 shows
the remote contacts in alarm state.
The analog output function allows the freezer to output signals
representing the temperature of the freezer cabinet. The factory default
setting is 4-20 mA. Refer to Figure 2-9 for output specifications.
Insert the power cord into the
power inlet module. Place the
retaining bracket (P/N
195763) over the connector.
Tighten retaining screws to
secure.
Caution See the serial tag on the side of the unit for electrical specifications
or refer to the electrical schematics in this manual. s
Caution If the factory installed option water-cooled condenser is present,
do not turn the freezer on without water connected and flowing. Damage
to the refrigeration system could occur within 5 minutes if water is not
connected and flowing on unit start-up. Refer to Section 6. s
2-8 Upright Freezer VWR International
Section 2
Overview
Attach the Power Cord
Connect Unit to Electrical
Power
Figure 2-10. Power Cord Connection
Remote Alarm Contacts
and Analog Output (cont.)
4-20 mA 0-1V 0-5V
Temperature -100 to +50°C -100 to +50°C -100 to +50°C
Figure 2-8. Remote Alarm Contact Pins
Figure 2-9. Specifications
IMPORTANT USER INFORMATION
CAUTION! Stored product should be protected
by a redundant 24 hour/day monitoring system
with alarm capability. An interconnect jack and
thermocouple are installed for centralized
monitoring, should on-board system fail.

The freezer should be operated on a dedicated grounded service. Check
the voltage rating on the serial tag of the unit and compare it with the
outlet voltage. Then, with the power switch turned off, plug the line cord
into the wall outlet.
First turn on the freezer power switch. Then open the lower front door by
grasping the bottom left corner. Locate the battery switch (Figure 1-5) and
turn it to Standby mode ( ). During initial freezer start-up, the system
battery may require charging and the Low Battery message may appear in
message center.
Caution Ensure the battery switch is turned to Standby mode ( ). The
rechargeable batteries require 36 hours to charge at initial start-up. A “Low
Battery” alarm may occur until the batteries are fully charged. Should a
power failure occur during the initial start-up period, the electronics will
have limited operation. s
With the freezer properly installed and connected to power, system
setpoints can be entered. The following setpoints can be entered in
Settings mode: Control temperature, high temperature alarm setpoint, low
temperature alarm setpoint, and (optional) BUS setpoint. Default settings
are shown in the table below.
Caution If the setpoint is changed and the low temperature and high
temperature alarms are set 10° from the set point, the alarm setpoints will
be adjusted automatically to maintain a distance of at least 10° from
setpoint. s
Caution If the factory installed option water-cooled condenser is present,
do not turn the freezer on without water connected and flowing. Damage
to the refrigeration system could occur within 5 minutes if water is not
connected and flowing on unit start-up. Refer to Section 6. s
Upright Freezer 2-9VWR International
Section 2
Overview
Connect Unit to Electrical
Power (continued)
Freezer Start-Up
Control Set Point -80°C
High Temperature Alarm -70°C
Low Temperature Alarm -90°C
Optional BUS Set Point -60°C
Table 2-2. Default Settings
Control Set Point -40°C
High Temperature Alarm -30°C
Low temperature alarm -50°C
Optional BUS Set Point -30C

These upright freezers have an operating temperature range of -50°C to -
86°C, or -10°C to -40°C, depending on model and ambient temperature.
The freezer is shipped from the factory with a temperature set point of
-80°C, or -40°C, depending on model. To change the operating
temperature setpoint:
1. Press the Mode key until the Settings indicator lights.
2. Press right arrow until “SET PT = -XX” is displayed in message center.
3. Press the up/down arrow key until the desired temperature set point is
displayed.
4. Press Enter to save the set point.
5. Press the Mode key until the Run indicator lights for Run mode or
press the right/left arrow keys to go to next/previous parameter.
If no control keys are pressed, the freezer will automatically return to RUN
mode after 5 minutes.
For -40°C units: At -20°C operation, probe may need to be calibrated to
ensure cabinet temperatures are within required range. Refer to Calibration
section for procedure.
The high temperature alarm will activate an audible/visual warning when
the freezer chamber temperature has reached or exceeded the high
temperature alarm set point. To set the high temperature alarm set point:
1. Press the Mode key until the Set indicator lights.
2. Press right arrow until “HI ALM = -XX” is displayed in message
center.
3. Press the up or down arrow key until the desired high temperature
alarm set point is displayed.
4. Press Enter to save the setting.
5. Press the Mode key until the Run indicator lights or press the right or
left arrow to go to the next or previous parameter.
If no control keys are pressed, the freezer will automatically return to RUN
mode after 5 minutes.
Caution The high alarm set point must be set at least 5°C from the
control set point. At initial start-up, the high temperature alarm is disabled
until the cabinet reaches set point, or 12 hours elapse. s
2-10 Upright Freezer VWR International
Section 2
Overview
Set the High Temperature
Alarm
Set the Operating
Temperature

The low temperature alarm will activate an audible/visual warning when
the freezer chamber temperature has reached or decreased below the low
temperature alarm set point. To set the low temperature alarm set point:
1. Press the Mode key until the Settings indicator lights.
2. Press the right arrow until “LO ALM = -XX” is displayed in the
message center.
3. Press the up or down arrow key until the desired low temperature
alarm set point is displayed.
4. Press Enter to save the setting.
5. Press the Mode key until the Run indicator lights or press the right or
left arrow to go to the next or previous parameter.
If no control keys are pressed, the freezer will automatically return to RUN
mode after 5 minutes.
Note The low alarm set point must be set at least 5°C from the control set
point.
An access code of 000 is required to access the Settings, Calibrate or
Configuration modes. If the access code is not set at the default ‘000’, a
code must be entered to leave RUN mode. See Section 4 for instructions
on modifying the access code.
Run is the default mode for the freezer. The run mode will display the
cabinet temperature on the temperature display and ‘SYSTEM OK’ on the
message center under normal operating conditions. In addition, this mode
allows display of the following information:
LINE VOLTAGE
COMPENSATED VOLTAGE
HSHX TEMPERATURE (heat exchanger temperature), - 86°C models
This information is scrolled individually by pressing the right arrow key.
In each case, the message center returns to SYSTEM OK in 10 seconds if
no keys are pressed.
Upright Freezer 2-11VWR International
Section 2
Overview
Access Code
Set the Low Temperature
Alarm
Run Mode