VWR VWRC0386A User manual

VWR®ULT Chest reezers
7055608 Version: 7
Issued: November 12, 2015
INSTRUCTION MANUAL
North American
Catalogue Number
European
Catalogue Number odel Number Size (cu ft) Size (liters) Box Voltage
-86°C FREEZERS
10160-738 -- VWRC0386A 3 85 63 120V/60Hz
-- 471-1137 VWRC0386V 3 85 63 230/50Hz
10160-740 VWRC1386A 13 368 252 120V/60Hz
10160-742 -- VWRC1386D 13 368 252 208-230V/60Hz
-- 471-1138 VWRC1386V 13 368 252 230/50Hz
10160-744 -- VWRC2086A 20 566 396 120V/60Hz
10160-746 -- VWRC2086D 20 566 396 208-230V/60Hz
-- 471-1139 VWRC2086V 20 566 396 230/50Hz

VWR International
ANUAL NU BER 7055608
7 41715 10/04/17 Removed water condenser info, Updated Accessory info, Added drawings bpg
6 41370 8/11/17 Updated BUS board information bpg
5 41348/41159/40543 5/12/17 Corrected intended use temp range and voltage rating, -gas statement bpg
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
Preface
Chest reezer i
Description Qty
Key 2
Neoprene Cap 2
1/4-20 x 5-1/2” Bolt 2
Retaining Clip 1
Remote Alarm Connector 1
Packing List
Country of origin: United States
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 thermocouple (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 thermocou-
ple be attached to a redundant 24 hour 7 day monitoring system with
alarm capabilities. Connecting the sensor to a monitoring and alarm sys-
tem separate from the freezer provides the utmost in product safety,
should the integral system fail. s
Legal Address of anufacturerLegal Address of anufacturer
United StatesEurope
VWR International, LLCVWR 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

VWR Internationalii Chest reezer
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: These chest freezers (see cover page for specific model series) 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 -86°C.
It is not considered a medical device and 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 e used for the storage of
flamma le inventory.
©2015 VWR® International. All rights reserved.

Chest reezer iiiVWR International
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.
quipment being maintained or serviced must be turned off and locked off to prevent possible injury.
xtreme 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.
4ach individual is responsible for his or her own safety.

VWR Internationaliv Chest reezer
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, Display, Indicators . . . . . . . . . . . . . . . . . . . . . . .2-5
Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Install Freezer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7
Choose Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Install Wall Bumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-8
RS-232 Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Remote Alarm Contacts and Analog Output . . . . . . . . . . . . . . . . 2-10
Attach Power Cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Connect Unit to lectrical Power . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Freezer Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-12
Set Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-12
Set High Temperature Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Set Low Temperature Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Access Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Run Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Calibrate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Calibrate Control Probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Temperature Stabilization Periods . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Configuration Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
High Alarm Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Low Alarm Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
System Battery Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
BUS Battery Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Display Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
Clear High Stage Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Set Access Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
RS485 Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Back Up System Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
Cold xcursions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
Warm xcursions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
Reset xcursions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Section 1
Section 2
Section 4
Section 3
Chest reezer vVWR International

vi Chest reezer VWR International
Table of Contents
Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
High Stage System Failure Alarm . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
Multiple Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
Micro Board Failure Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Lost Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
rror Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
aintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Clean Cabinet xterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Clean Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Clean Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Defrost Chamber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Clean Lid Gasket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
Replace Battery(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
Check Battery(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Prepare Unit for Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
PR V NTIV MAINT NANC . . . . . . . . . . . . . . . . . . . . . . . . .6-6
Factory Installed Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
Back Up System (BUS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Install Injection Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Install Temperature Probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-2
Connect Probe/Solenoid Harness . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4
BUS Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4
Configure Optional BUS (Back Up System) . . . . . . . . . . . . . . . . . .7-7
Set Optional BUS Set Point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7
Test the BUS Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
Disconnect Fitting Assembly, Transfer Hose . . . . . . . . . . . . . . . . . 7-8
Chart Recorder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
Install Chart Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9
Change Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9
Calibrate Chart Recorder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9
Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Handling Liquid Nitrogen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A -1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A -2
Handling Liquid CO2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-1
First Aid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-1
Field Installation Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1
Distributor List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2
Section 5
Section 6
Section 7
Section 8
Appendix

Chest reezer 1-1VWR International
Section 1 Product Specifications
Temperature Range -50°C (-58° ) to -86°C (-123° ) in an 18°C to 28°C * (64.4° to 82.4° ) ambient
Capacity
12.7 cu. ft. (360 liters)
20.0 cu. ft. (566.3 liters)
Refrigeration Cascade system, (2) hermetically-sealed compressors
Insulation C C-free, foamed-in-place urethane: minimum 5.0" (12.7cm) cabinet; 2.0" (5.0cm) lid;
1.0" (12.5cm) sub-lids
Electrical -
nominal voltage ±10% 208-230VAC, 1 PH, 60 Hz, 12 LA 230VAC, 1 PH, 50 Hz, 12 LA 120VAC, 1 PH, 60 Hz, 16 LA
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
Temperature Range -50°C (-58° ) to -86°C (-123° ) in an 18°C to 28°C * (64.4° to 82.4° ) ambient
Capacity 3.0 cu. ft. (84.9 liters)
Refrigeration Cascade system, (2) hermetically-sealed compressors
Insulation C C-free, foamed-in-place urethane: minimum 5.0" (12.7cm) cabinet; 2.0" (5.0cm) lid;
1.0" (12.5cm) sub-lids
Electrical -
nominal voltage ±10% 120VAC, 1 PH, 60 Hz, 10.5 LA 230VAC, 1 PH, 50 Hz, 5.4 LA
Breaker Requirements 15 Amp, 120VAC, Dedicated Circuit,
15 Amp Time Delay Breaker
15 Amp, 230VAC, Dedicated Circuit,
15 Amp Time Delay Breaker

1-2 Chest reezer VWR International
Section 1
Product Specifications
Certifications
Declaration of Conformity is available on request as a separate document. 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, decreasing 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 quipment
Fluorinated Greenhouse Gases
Compliant with R GULATION ( U) No 517/2014 OF TH UROP AN PARLIAM NT AND OF TH
COUNCIL on fluorinated greenhouse gases.
This product contains fluorinated greenhouse gases in a hermetically sealed system. This product contains foam
blown with fluorinated greenhouse gas, R-245fa. If a leak in the sealed system is detected, the operator shall repair
without undue delay.
For ULT models rated 230V/50H , intended for import into the EU, the following si es are designed for use
with the following amounts of fluorinated greenhouse gases:
1 Installation catego y (ove voltage catego y) defines the level of t ansient ove voltage which the inst ument is designed to withstand safely. It
depends on the natu e of the elect icity supply and its ove voltage p otection means. Fo example, in CAT II which is the catego y used fo
inst uments in installations supplied f om a supply compa able to public mains such as hospital and esea ch labo ato ies and most indust ial
labo ato ies, the expected t ansient ove voltage is 2500V fo a 230V supply and 1500V fo a 120V supply.
2 Pollution deg ee desc ibes the amount of conductive pollution p esent in the ope ating envi onment. Pollution deg ee 2 assumes that
no mally only non-conductive pollution such as dust occu s with the exception of occasional conductivity caused by condensation.
1st Stage 2nd Stage
Size (ft³) Refrigerant Amount (kg) GWP Refrigerant Amount (kg) GWP
3R-404a 0.227 3 922 R-508b 0.173 13 396
12.7 R-404a 0.680 3 922 R-508b 0.425 13 396
17 R-404a 0.680 3 922 R-508b 0.439 13 396
20 R-404a 0.680 3 922 R-508b 0.454 13 396

Chest reezer 2-1VWR International
Section 2 Overview
Figures 2-1 and 2-2 show the front view of the freezer and indicate the
following freezer components:
• Control Panel - keypad, displays and indicators.
• BUS (Optional Back Up System) panel.
• Optional temperature recorder (7 day, one pen) or datalogger.
• Keylock - keyed lid lock.
Figure 2-1. ront View - 3 cu ft (85 liters)
Figure 2-2. ront View - 13 and 20 cu ft (368 and 566 liters)

2-2 Chest reezer VWR International
Section 2
Overview
Figures 2-3 and 2-4 display the rear view of the freezer and indicate the
following freezer components:
• 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 or RS-485 interface.
• Power Switch (mains disconnect).
Optional
BUS battery
I
O
Optional
BUS Connections
Remote Alarm Contacts
Power Switch
(mains disconnect)
Power Inlet
Threaded holes for
wall bumpers Access Port
Figure 2-3. Rear View - 3 cu ft (85 liters)
RS-232 or RS-485
Interface
Remote Alarm Contacts
and Analog Output
Optional
BUS Connections
Power Switch
(mains disconnect)
Power Inlet
Access Port
Threaded holes for
wall bumpers
Figure 2-4. Rear View - 13 and 20 cu ft (368 and 566 liters)

Chest reezer 2-3VWR International
Section 2
Overview
The probe cover houses the control, optional recorder, Model 1535 alarm,
or BUS probes.
Figures 2-6, 2-7, and 2-8 indicate the following components:
• Freezer filter location
• Battery power switch (freezer and BUS)
• Thermocouple receptacle
• Battery mounting bracket
• Freezer and optional BUS battery
T
Figure 2-5. Probe Cover
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CF
%RH
Alarm
Sensor
To remove
filter
Thermocouple
interconnect jack
O
Battery
Switch
Condenser
Figure 2-6. 13 and 20 cu ft (368 and 566 liters) Models

2-4 Chest reezer VWR International
Section 2
Overview
micro
board
battery
bracket
battery
switch
probe
access
port
Figure 2-7. reezer Left Side - Sidecar panel removed
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System
battery
Battery
switch
Thermocouple
interconnect jack
To
remove filter
Figure 2-8. 3 cu ft (85 liters) Models

1. Mode select switch - Used to select Run, Settings, Calibrate and
System Configuration Modes.
2. Temperature display - Displays temperature in degrees Celsius.
3. Alarm indicator - Light pulses on/off during an alarm condition of the
cabinet.
4. Mute - Silences the audible alarm.
5. Low Battery - indicates a low battery condition of the freezer battery.
6. Hot Condenser - indicates a hot condenser condition.
7. Message Center - displays system status and alarms.
8. Scroll for Parameters arrows - moves the operator through the choices
of the selected mode.
9. Up and down arrows - Increases or decreases values, toggles between
choices.
10. nter arrow - Stores the value into computer memory.
Chest reezer 2-5VWR International
Section 2
Overview
Figure 2-9. Control Panel Keys, Display and Indicators
Control Panel Keys,
Display, Indicators
Mute
Mode Alarm
Indicator
Temperature Display
Enter ArrowUp and Down Arrows
Scroll for Parameters Arrows
Low Battery
Hot
Condenser

These freezers have four basic modes which allow freezer setup: Run,
Settings, Calibrate and Configuration.
Run is the default mode which the freezer will normally be in during
operation.
Settings is used to enter system set points for freezer operation.
Cali rate 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.
2-6 Chest reezer VWR International
Section 2
Overview
Table 2-1. Modes of 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
Panel Keys, Display,
Indicators (cont.)

Scroll for Parameters arrows: Steps the operator
through the parameters of S TTINGS, CALIBRAT
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 S TTINGS, CALIBRAT ,
and CONFIGURATION Modes.
nter arrow: Must press enter arrow key to save to
memory all changed values.
Down arrow: Decreases or toggles the parameter values
that have been selected in the S TTINGS,
CALIBRAT and CONFIGURATION Modes.
Mute key: Press to silence the audible alarm. See
Section 4 for alarm ringback times.
There are two displays on the control panel. The temperature display
shows the temperature in degrees Celsius. The message center displays the
system status (Mode) at all times. The message SYST M OK displays
during normal operation. Alarm messages are displayed if the system
detects an alarm condition. See Section 5 - Alarms.
To remove the freezer from the pallet, use a 1/2" wrench to remove all the
bolts securing the shipping bracket to the pallet.
Note If tipped more than 45°, allow the unit to set upright for 24 hours
before start up. s
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.
Chest reezer 2-7VWR International
Section 2
Overview
Displays
Figure 2-10. Message Center
Install Freezer
Panel Keys, Display,
Indicators (cont.)

The freezer can be easily pushed to the desired approved location, as
described previously. When the freezer is in position, set the front caster
brakes.
Note Do not move the freezer with the product load inside. 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
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 For proper ventilation and airflow, a minimum clearance of 5” at
the rear and front and a clearance of 8” on the side of the freezer is
required. Allow adequate space for lid opening. If ambient increases above
36°C, clearance at the rear of the cabinet must be increased to 8”. s
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 2-2 for the
locations of the pre-tapped holes.
These chest freezers have a data communications interface. The factory
default setting is RS-232.
The wiring identification for the interface
is shown in Figure 2-11. One nine pin, sub
"D" style connector is located on the back
of the freezer. See Figure 2-2 for the
location of the connector on the freezer.
2-8 Chest reezer VWR International
Section 2
Overview
Choose Location
Install Wall Bumpers
RS-232 Communications
Figure 2-11. RS-232 Interface
Install Freezer
(cont)
Quantity Description Purpose
2 1/4-20 x 5-1/2” Bolt Wall Bumper
2 Neoprene Cap Cap Protector

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
The data transfer sequence is transmitted in the following format. X refers
to numerical temperature data.
(NUL) (-) XXX (SP) C (SP) ( rror Message) (SP) (LF) (CR) ( OT) (SP)
In the event of a CNTRLFAIL, r07, or the control probe is out of range
error, the numerical temperature data (XXX) in the transmission would be
replaced by T_ RR.
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 OT - nd of text (4)
NUL - Null character (00)
If an alarm condition does exist, “ rror Message” in the protocol will be
replaced by the following:
UND RT MP (temperature above the low alarm setpoint)
OV RT MP (temperature below the high alarm setpoint)
PWRFAIL (AC power failure)
CNTRLFAIL (Control probe failure)
r07 (micro failure)
HSHX FAIL (Heat exchanger failure)
HOT COND (Hot condenser)
Chest reezer 2-9VWR International
Section 2
Overview
RS-232 Communications
(cont)

These chest freezers have remote alarm contacts and analog output. See
Figures 2-3 and 2-4 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. 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 micro board failures. Figure
2-12 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 Table 2-2 for output specifications.
2-10 Chest reezer VWR International
Section 2
Overview
Remote Alarm Contacts
and Analog Output
Figure 2-12. Remote Alarm Contacts
4-20 mA 0-1V 0-5V
Temperature -100 to +50°C -100 to +50°C -100 to +50°C
Table 2-2. Analog Output Specifications
IIMMPPOORRTTAANNTTUUSSEERRIINNFFOORRMMAATTIIOONN
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.

Insert the power cord into the power inlet module. Place the retaining
bracket (P/N 195763) over the connector. Tighten retaining screws to
secure.
Note 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
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 1-4) 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
the message center.
Note nsure 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
Chest reezer 2-11VWR International
Section 2
Overview
Attach Power Cord
Connect Unit to Electrical
Power
Figure 2-13. Power Cord Attachment