Cardinal Health CAX1230LA User manual

Cardinal Health™ Premier Plus
-30°C Plasma Freezers
Installation and Operation CAX1230LA, CAX1230LD
CAX2330LA, CAX2330LD
CAX3030LA, CAX3030LD
CAX5030LA, CAX5030LD

Preface
IMPORTANT Read this instruction manual. Failure to follow the instructions in this manual can result in
damage to the unit, injury to operating personnel, and poor equipment performance.
CAUTION All internal adjustments and maintenance must be performed by qualied service personnel.
Material in this manual is for informational purposes only. The contents and the product it describes are
subject to change without notice. Cardinal Health makes no representations or warranties with respect
to this manual. In no event shall Cardinal Health be held liable for any damages, direct or incidental,
arising from or related to the use of this manual.
For your future reference, please have the following information readily available. It can be found on the dataplate
attached to your unit.
Model Number:
Serial Number:
The following information, if available, is helpful for contacting the factory.
Date Purchased:
Purchase Order Number:
Source of Purchase:
(manufacturer or specic agent/rep organization)

Table of Contents
1. Model...................................................................................................................................................................................... 1
2. Safety Precautions........................................................................................................................................................... 2
3. Unpacking ............................................................................................................................................................................ 5
4. Packing List ......................................................................................................................................................................... 5
5. General Recommendations ........................................................................................................................................ 6
Temperature Monitoring ............................................................................................................................................... 6
Intended Use....................................................................................................................................................................... 6
6. Operating Environmental Conditions ................................................................................................................... .7
Unit Specications ............................................................................................................................................................ 7
7. Installation........................................................................................................................................................................... 8
Location ............................................................................................................................................................................... 8
Wiring .................................................................................................................................................................................... 8
Shelves (Optional) ............................................................................................................................................................. 9
Drawers ................................................................................................................................................................................. 9
Baskets ................................................................................................................................................................................12
Temperature Sensor Bottles ........................................................................................................................................12
Door Operation ................................................................................................................................................................13
Remote Alarm (Optional) .............................................................................................................................................13
Final Checks ......................................................................................................................................................................14
8. Startup ................................................................................................................................................................................15
Initial Startup ...................................................................................................................................................................15
Product Loading and Unloading Guidelines ........................................................................................................15
9. Operation............................................................................................................................................................................16
Control Panel.....................................................................................................................................................................16
Display Functions ............................................................................................................................................................17
Programming Functions ...............................................................................................................................................18
Service Parameters..........................................................................................................................................................18
Temperature Settings ...................................................................................................................................................21
Alarms .................................................................................................................................................................................21

10. Chart Recorder (Optional)........................................................................................................................................22
Set Up and Operation ....................................................................................................................................................22
Changing Chart Paper ...................................................................................................................................................23
Power Supply ....................................................................................................................................................................23
Calibration and Adjustments ......................................................................................................................................23
11. Temperature Transmitter (Optional)...................................................................................................................24
Powered Temperature Transmitter............................................................................................................................24
Unpowered Temperature Transmitter......................................................................................................................24
12. Maintenance ..................................................................................................................................................................25
Cleaning the Cabinet Interior......................................................................................................................................25
Cleaning the Condenser Filter ....................................................................................................................................25
Cleaning the Condenser ...............................................................................................................................................25
Automatic Defrost...........................................................................................................................................................26
Gasket Maintenance.......................................................................................................................................................26
Alarm Battery Maintenance.........................................................................................................................................26
Preparation for Storage.................................................................................................................................................26
13. Troubleshooting ...........................................................................................................................................................27
14. End of Life Care..............................................................................................................................................................29
15. Warranty ...........................................................................................................................................................................30

1
1. Model
The following table shows the units covered in this operation and installation manual by model number.
Refer to Section 6.1 for details on the voltage specications for the various models.
Table 1. Applicable Models
Unit Model (*)
Cardinal Health - CH1230L* A/D
Cardinal Health - CH2330L* A/D
Cardinal Health - CH3030L* A/D
Cardinal Health - CH5030L* A/D

2
2. Safety Precautions
In this manual, the following symbols and conventions are used:
This symbol when used alone indicates important operating instructions which reduce the risk of injury or poor
performance of the unit.
WARNING: This symbol indicates potentially hazardous situations which, if not avoided, could result in serious injury
or death.
WARNING: This symbol indicates situations where dangerous voltages exist and potential for electrical shock is
present.
WARNING: This symbol indicates potentially hazardous situations, which if not avoided could result in re.
CAUTION: This symbol, in the context of a CAUTION, indicates a potentially hazardous situation which if not avoided
could result in minor to moderate injury or damage to the equipment.
CAUTION: This indicates a situation which may result in property damage.
This symbol indicates surfaces which may become hot during use and may cause a burn if touched with unprotected
body parts.
Before installing, using or maintaining this product, please be sure to read the manual and product warning labels
carefully. Failure to follow these instructions may cause the product to malfunction, which could result in injury or
damage.
This symbol indicates possible pinch points which may cause personal injury.
The snowake symbol indicates low temperatures and risk of frost bite. Do not touch bare metal or samples with
unprotected body parts.
This symbol indicates a need to use gloves during indicated procedures. If performing decontamination procedures,
use chemically resistant gloves.
This symbol indicates possible sharp points which may cause skin abrasion.

3
The following are important safety precautions that apply to this product:
Use this product only in the way described in the product literature and in this manual. Before using it, verify that this
product is suitable for its intended use. If the equipment is use in a manner not specied by the manufacturer, the
protection provided by the equipment may be impaired.
Do not modify system components, especially the controller. Use OEM exact replacement equipment or parts.
Before use, conrm that the product has not been altered in any way.
WARNING: Risk of Shock. Your unit must be properly grounded in conformity with national and local electrical codes.
Do not connect the unit to overloaded power sources.
WARNING: Risk of Shock. Disconnect unit from all power sources before cleaning, troubleshooting, or performing
other maintenance on the product or its controls.
WARNING: Risk of Fire. This unit is not for storage of ammable materials.
WARNING: This unit is charged with hydrocarbon refrigerants. Only qualied service personnel should service this
unit.
Unauthorized repair of your freezer will invalidate your warranty. Contact Technical Service at 1-800-438-4851 for
additional information.
WARNING: Risk of Fire. No equipment that uses an open ame should be placed inside the unit. This will harm the
unit, hamper functionality and compromise your safety.
WARNING: Risk of Fire. Do not use any battery powered or externally-powered equipment in the device.
CAUTION: Risk of Abrasion. Hidden sharp edges may be present on drawers. Use appropriate Personal Protective
Equipment (such as gloves) while handling the drawers to avoid possible sharp points related injury.

4
EMC
EMC Registration is done on this equipment for business use only. It may cause interference when the product
would be used in home.
This equipment has been tested and found to comply with the limits for a Class A digital device. Class A covers
devices for usage in all establishments other than domestic and that are not directly connected to a low voltage
power supply network, which supplies domestic environment.
This ISM device complies with Canadian ICES-001.
FCC
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part
15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference
when the equipment is operated in a commercial environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may
cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to
cause harmful interference in which case the user will be required to correct the interference at his own expense.

5
3. Unpacking
At the time of delivery, be sure to inspect the unit packaging for damage before signing for the shipment.
If packaging damage is present, request immediate product inspection and le a claim with the carrier.
Note Packaging damage does not denote that unit damage exists.
If concealed damage is found (damage that is not apparent until the item has been unpacked), stop further
unpacking and save all packing for carrier's inspection. Make a written request for inspection to delivering carrier.
This must be done within 15 days after delivery. Then le a claim with the carrier.
Do not return goods to the manufacturer without written authorization.
4. Packing List
Inside the freezer cabinet is a bag containing:
• This manual
• Certicate of Conformance
• Safety Data Sheet for Glycerin
• Quick start guide
• Two control panel keys
• Two cabinet door keys
• Chart recorder pamphlet
• Extra chart recorder paper
If the unit was ordered with shelves, the bag will also include:
• Small bag with shelving clips
If specied on the order, the bag may also include:
• QC temperature graph and test log
• Calibration information
Other items with your unit include:
• Power Cord
• Baskets, Shelves or Drawers
• Thermal Bottles

6
5. General Recommendations
This section includes some general recommendations for your unit.
5.1 Temperature Monitoring
IMPORTANT NOTE We recommend the use of a redundant and independent temperature monitoring system so that
the device can be monitored continuously for performance commensurate with the value of the product stored. Please
use the probe in glycerin bottle (if present) as the temperature reading reference point for all calibration / validation
procedures.
5.2 Intended Use
The -30°C plasma freezers described in this manual are intended for the storage of blood and blood products in a
frozen state. All materials stored in these products must be in sealed blood bags. Product must not be stored in
open containers. These products are intended for storing samples or inventory at operating temperatures
between -35°C and -18°C.
Expected users of this equipment include but are not limited to personnel from the following areas: Professional
and clinical (blood bank) laboratories, Pharma and Biotech facilities, Industrial and Government facilities or those
trained in laboratory protocols put in place at your facility. The units are not for use by the general public.
These products should only be used by authorized and adequately trained personnel.
It is considered a medical device and has therefore been registered with the medical device regulatory body FDA and
is considered a Class 1 medical device by the FDA. This product is classied as product code JRM, regulation number
862.2050 and is considered 510(K) exempt. This unit is not intended for use in classied hazardous locations,
nor to be used for the storage of ammable or corrosive inventory.
Storage of unsealed corrosive substances may cause the interior of the unit to corrode.
Blood bags and blood products CANNOT be stored together with other materials (drugs, reagents and generic use
substances). Blood and blood components must be stored in accordance with the temperature settings recommended
by the manufacturer and must follow general guidelines around suitable storage period.

7
Model Rated
Voltage
Rated
Current
Frequency /
Phase
Power
Module
Plug
Drawers/
250ml
Plasma
Bags
Approximate
Weight
Kg (lbs)
Exterior
Dimensions
(D x W x H)
12A 115 V 7.2 A 60 Hz/1
IEC C19
7 / 273
(39 per drawer) 162 (358) 79.0 x 61.9 x 185.4 cm (31.1 x 24.0 x 73.0 in)
12D 208-230 V 3.6 A 60 Hz/1
23A 115 V 10.0 A 60 Hz/1
7 / 532
(76 per drawer)
209 (461)
96.2 x 71.1 x 199.4 cm
(37.9 x 28.0 x 78.5 in)
23D 208-230 V 7.4 A 50 Hz/60Hz/1 200 (440)
30A 115 V 10.0 A 60 Hz/1
7 / 665
(95 per drawer) 221 (488) 96.2 x 86.4 x 199.4 cm (37.9 x 34.0 x 78.5 in)
30D 208-230 V 7.4 A 60 Hz/1
50A 115 V 16 A 60 Hz/1
14 / 1064
(76 per drawer) 332 (731) 96.2 x 143.5 x 199.4 cm (37.9 x 56.5 x 78.5 in)
50D 208-230 V 9.6 A 60 Hz/1
6. Operating Environmental Conditions
The freezers described in this manual are classied for use as stationary equipment in a Pollution Degree 2 and
Overvoltage Category II environment.
These units are designed to operate under the following environmental conditions:
• Indoor use
• Altitude up to 2000 m (6512 ft)
• Maximum relative humidity 60% for temperatures from 15 to 32°C (59 to 90°F)
• Main supply voltage uctuations not to exceed 10% of the nominal voltage
• The freezer must not be connected to a GFCI (Ground Fault Circuit Interrupter) protected outlet as it may
be subject to nuisance tripping.
Operation outside of these conditions will aect the performance of the unit and the samples stored inside.
6.1 Unit Specications
The last character in the model number listed on the freezer identies the electrical specications for your unit.
The dataplate is located on the upper left side of the unit.
Table 2. Unit Specications

8
7. Installation
WARNING: Do not exceed the electrical rating printed on the dataplate located on the upper left side of the unit.
Do not move the unit using the drain pan on the back. This could cause damage to the equipment.
7.1 Location
Install the unit on a level area free from vibration with a minimum of 6 inches of space on the sides and rear and
12 inches at the top. Do not position the equipment in direct sunlight or near heating diusers, radiators or other
sources of heat.
WARNING: Risk of Injury. Do not move the unit while loaded. Move by pushing slowly at handle level or lower. Use
caution on uneven surfaces.
7.1.1 Installation Instructions
The unit must be level both front to back and side to side when installed. If the unit is out of level, you may need to shim
the corners or casters with thin sheets of metal. Be sure to set the brakes for units equipped with casters.
An unlevel unit may result in instability and performance issues for the doors and drawers.
7.2 Wiring
The wiring diagrams are attached on the back of the cabinet.
CAUTION: Connect the equipment to the correct power source. Incorrect voltage can result in severe damage to the
equipment.
CAUTION: Risk of Shock. For personal safety and trouble-free operation, this unit must be properly grounded while in
use. Failure to ground the equipment may cause personal injury or damage to the equipment. Always conform to the
National Electrical Code and local codes. Do not connect the unit to overloaded power lines.
Do not position the unit in a way that impedes access to the disconnecting device or circuit breaker in the back of the
unit.
Always connect the unit to a dedicated (separate) circuit. Each unit is equipped with a service cord and plug
designed to connect it to a power outlet which delivers the correct voltage. Supply voltage must be within ±10% of the
unit rated voltage. If cord becomes damaged, replace with a properly rated power supply cord.
Table 3. Power Cord Specications
CAUTION: Risk of Shock. Never cut the grounding prong from the service cord plug. If the prong is removed, the
warranty is invalidated.
In an emergency, the power cord is a disconnect device.
Model Power Cord Specications
12/23/30 A 3-G 12 AWG, NEMA 5-15P, 15A/125V
50 A 3-G 12 AWG, NEMA 5-20P, 20 A/125V
D 3-G 14 AWG, NEMA 6-15P, 15A/250V

9
7.3 Shelves (Optional)
Single door plasma freezers have the option to be ordered with 4 wire shelves and double door plasma freezers have
the option to be ordered with 8 wire shelves.
Maximum shelf capacity is 45 kg (100 lbs).
For safety in shipping, the shelves are packaged and secured inside the cabinet. Insert the shelf support hangers
(included inside the unit) into the built-in shelf supports (located on the inside walls of the cabinet interior) at the
desired locations. Position the shelves on the at supports (refer to Figure 1). Do not position shelving to disrupt the
thermal bottle(s).
7.4 Drawers
Single door plasma freezers come standard with 7 drawers and double door plasma freezers come standard with 14
drawers.
Drawers are shipped in a factory installed position that promotes uniform spacing between the drawers.
The drawer slides are adjustable to higher and lower positions in the cabinet. You can position these slides in the
vertical slots which are spaced at one-inch intervals. The drawers must be removed in order to
adjust the position of the drawer slides.
For CH1230, CH2330, and CH5030, the maximum drawer capacity is 27 kg (60 lbs). For CH3030, the maximum drawer
capacity is 36 kg (80 lbs).
CAUTION: Risk of Abrasion. Hidden sharp edges may be present on drawers. Use appropriate Personal Protective
Equipment (such as gloves) while handling the drawers to avoid possible sharp points related injury.
7.4.1 Removing the Drawers
To remove the drawers, complete the following steps (refer to Figure 2):
1. Pull the drawer towards you until the slides are fully extended.
2. Lift the back of the drawer to disengage the mounting tabs from the slots on the slides.
Note: The drawers t snugly between the slides. Push the back of the drawer from underneath to remove the drawer.
3. Raise the back of the drawer almost to a vertical position and disengage the front mounting clips from the sides.
Figure 1. Shelf Support Hanger

10
7.4.2 Reinstalling the Drawers
To reinstall the drawers, complete the following steps (refer to Figure 2):
1. Pull both the slides of the drawer towards you until the slides are fully extended.
2. Position the drawer between the slides and with the back facing end raised at 45 degree angle, insert the mounting
clips at the front into the slots in front of the slides.
3. Push the back of the drawer down between the slides and insert the basket tabs into the slots at the back.
Note The drawers t snugly between the slides. Push on the back of the drawer from the inside to insert the
drawer tabs completely into the slots. Make sure both the drawer tabs are aligned with the slots on the
slides before pushing the drawer down between the slides.
CAUTION: Be careful when reinstalling the drawers to avoid possible pinching.
7.4.3 Changing Drawer Position
Drawer slides have a small wire safety clip at the front pilaster which prevent the slides from falling when the drawer is
removed. To change the position of the drawer slides, complete the following steps:
1. Locate the safety clip.
2. Slip a small screwdriver under the bottom of the wire clip and pry the clip towards the inside of the freezer.
Figure 3. Clip Removal
Figure 2. Drawer Removal and Installation
Label Description
1 Tabs
2 Drawer slide
3 Slot

11
3. Lift up the slide at the front. The slide is free to move from the front pilaster.
Figure 4. Front of slide Removal
4. The drawer slide must be removed from the rear pilaster at approximately a 45 degree angle
towards the center of the cabinet.
Figure 5. Slide Rotation
5. Pull the slide towards the front of the cabinet.
6. Determine desired location for the slide and insert the slide into the rear pilaster at a 45 degree angle
towards the center of the cabinet.
7. Once the slide is seated in the rear pilaster, rotate the slide until it is parallel with the unit wall and
insert slide into front pilaster.
Figure 6. Slide Installation
CAUTION: Ensure the slide is level. If the slide is not seated in a level orientation, the drawers/baskets will not function
as intended. This could cause injury or product damage.

12
8. Replace the safety clip by hooking the clip under the front pilaster slide bracket. Then rotate the wire safety clip to position
the other bend of the wire safety clip over the top of the same bracket.
Figure 7. Clip Replacement
Drawer slides do not require lubrication. Additional lubricant could impede movement of the drawers when lubricant is cold.
7.5 Baskets
Baskets can be ordered as an accessory for this unit.
The basket slides are adjustable to higher and lower positions in the cabinet. You can position these slides in the vertical slots which
are spaced at one-inch intervals. The baskets must be removed in order to adjust the position of the slides. The procedure for removing,
reinstalling and changing position of the baskets can be found in Section 7.4.1, Section 7.4.2, and Section 7.4.3.
The maximum basket capacity is 27 kg (60 lbs).
7.6 Temperature Sensor Bottles
The temperature displayed on the control panel and chart recorder is measured by a probe inserted in sensor bottle inside the cabinet.
The sensor probe must be inserted in the glycerin bottle prior to operation.
The sensor bottle is positioned on the left wall towards the top of the unit.
To install the sensor(s) into the bottles, complete the following steps:
1. Remove the bottle from the bracket and verify that each bottle is full of liquid.
2. Remove the solid cap from the bottle and save for the next time the unit needs to be moved.
3. Remove the taped lid and temperature sensor(s) from the wall.
4. Insert the temperature probe(s) into the bottle.
5. Secure the lid to the bottle and return the bottle to the bracket.

13
7.7 Door Operation
The doors on all units are designed to stay open if opened 90 degrees or more. The door spring tension cannot be adjusted.
If the self-closing door does not work properly, make sure the unit is level.
Door seal integrity is critical for unit’s performance. Never route anything through the door seal. A loose tting gasket allows
moist air to be drawn into the cabinet, resulting in quicker frost buildup on the evaporator coil, longer running time, poor
temperature maintenance, and increased operation cost.
CAUTION: Keep hands and body parts clear of closing doors. The moving parts create a potential pinch point.
WARNING: Risk of Fire. There are port holes in the walls of the cabinet to help facilitate routing of tubing, independent
temperature sensors, and other non-electrical items. The ports are not intended to supply power to devices inside the device.
Be sure to seal the holes after routing items to prevent undesired air exchange.
7.8 Remote Alarm (Optional)
All units have factory-installed local alarm contacts that can be used for remote alarm systems.
The maximum distance between a freezer and a remote alarm depends on the wire gauge used. Refer to Table 4 below:
Table 4. Wire Gauges and Distance to Remote Alarm
Remote alarm terminals are located at the rear of the machine compartment.
The three terminals are: COMMON, OPEN ON FAIL (Normally Closed), and CLOSE ON FAIL (Normally Open).
Figure 8. Remote Alarm Diagram
Wire
Gauge
Total Wire Length
(feet)
Distance to Alarm
1/2 Wire Length (feet)
20 530 265
18 840 420
16 1330 665
14 2120 1060
12 3370 1685

14
To install the remote alarm, make the following connections:
1. Connect the COMMON terminal on the cabinet switch to the COMMON wire on the alarm.
2a. To get an alarm when the switch contacts open, connect the OPEN ON FAIL terminal on the cabinet to the
OPEN ON FAIL wire on the alarm.
2b. To get an alarm when the switch contacts close, connect the CLOSE ON FAIL terminal on the cabinet to the
CLOSE ON FAIL wire on the alarm. The COMMON and CLOSE ON FAIL wires must be tied together in this application.
3. Plug the alarm system service cord into an electrical outlet.
The contacts will trip in the event of a power outage, high temperature alarm or low temperature alarm.
7.9 Final Checks
Before start up, be sure to complete the following steps:
1. Make sure that the unit is free of all wood or cardboard shipping materials, both inside and outside.
2. Check the positions of the shelves, drawers and baskets. If you want to adjust the positions,
see instructions in Section 7.3, Section 7.4 and Section 7.5.
3. Verify that the unit is connected to a dedicated circuit.

15
8. Startup
8.1 Initial Startup
To start up the freezer, complete the following steps:
1. Verify that the sensor probe(s) have been installed in the bottle(s) as described in Section 7.6.
2. Ensure the double pole circuit breaker switch located next to the power inlet is in“ON”position (i.e. “I”position).
3. Insert the key in the switch and turn to the Power On position. The display will show the actual
cabinet temperature and the compressor and evaporator should start within approximately 10 minutes.
4. Allow the unit to reach operating temperature before loading it with any product. To stabilize the temperature
prole, a 24-hour waiting period is recommended.
5. If you desire to enable the alarms, turn the three position key switch one turn further clockwise to the Alarm On
position. To avoid nuisance alarms, wait until the unit has cooled down to the desired operating temperature
(-30°C default).
6. If you have a remote alarm, hook it up at this point (refer to Section 7.8).
7. If desired, lock the cabinet door using the key. Place duplicate key copies in a safe place.
All controls should now be fully operational, the alarm active (if enabled), and all visual indicators active.
CAUTION: Use gloves when handling samples to avoid potential frost bite.
8.2 Product Loading and Unloading Guidelines
When loading your freezer, take care to observe the following guidelines:
• Never load the plasma freezer beyond capacity. The number of 250 ml bags that are recommended for your unit can
be found in Table 2.
• Distribute the load as evenly as possible. Temperature uniformity depends on air circulation, which could be impeded
if drawers are overlled, particularly at the top of the cabinet.
• For critical applications such as plasma storage, be sure that the alarm systems are working and active before you load any
product.
• Ensure clearance between the top of the cargo and the bottom of the shelf/drawer/basket. Lack of clearance may aect unit
performance or impede operation of drawer/basket. Keep cargo within the bounds of the shelf/drawer/basket.
• For initial product loading and after removing the drawers or baskets for cleaning, be sure to load the unit from the bottom
drawer or basket up to ensure the components are seated properly. (Applicable for drawers and baskets only).
• Only open one drawer or basket at a time.
• Avoid disrupting the thermal bottle(s) when repositioning interior components.
• The oor of the cabinet should not be loaded.
• Never load the unit above the load limit line. This is important to ensure that air can circulate properly and evenly
distribute the temperature throughout the interior.
Figure 9. Load Limit Line

16
Bars Displayed Temperature (°C)
Bulb Only -35 (cold alarm)
1 Bar -33.5
2 Bars -32
3 Bars -30.5
4 Bars -29
5 Bars -27.5
Bars Displayed Temperature (°C)
6 Bars -26
7 Bars -24.5
8 Bars -23
9 Bars -21.5
10 Bars -20 (warm alarm)
9. Operation
9.1 Control Panel
Figure 10. Freezer Control Panel
The control panel is located on the top right side of your freezer. You can use the three pushbuttons (#5, #8, and #9 in Figure 10)
to change the temperature display (#1) or to adjust temperature and alarm setpoints, as given in Section 9.3. The thermometer
display (#2) provides a quick visual indicator of current cabinet temperature and alarm conditions.
1. Main temperature display - during normal operation, shows cabinet temperature in degrees Celsius, as measured by the
primary sensor inside the cabinet. You can use the buttons to display other values such as setpoints and highest and lowest
recorded temperatures. The number in the main display ashes when the value can be modied.
2. Thermometer - shows cabinet temperature and alarm conditions. There are 10 horizontal bars: 9 are displayed during
normal operation, the tenth (top) bar indicates a warm alarm condition. The number of bars illuminated indicates approximate
cabinet temperature. With the default settings, 4 to 6 bars illuminated indicate that the cabinet is at desired setpoint.
For example, suppose that the cabinet temperature setpoint is -30°C and that the cold and warm alarm setpoints are -35°C
and -20°C. Then the number of bars illuminated indicates cabinet temperature as follows:
Table 5. Thermometer Display on Control Panel (Setpoint -30°C)