Helmer Scientific i.Series User manual

360137-D/D
Freezer Operation Manual
i.Series®and Horizon Series™ - Undercounter
360137-D/E
Laboratory
i.Series
iLF104-ADA (Version D)
iLF105 (Version D)
Horizon Series
HLF104-ADA (Version D)
HLF105 (Version D)
Plasma Storage
i.Series
iPF104-ADA (Version D)
iPF105 (Version D)
Horizon Series
HPF104-ADA (Version D)
HPF105 (Version D)

Document Updates
The document is furnished for information use only, is subject to change without notice and should not be construed as a
commitment by Helmer Scientic. Helmer Scientic assumes no responsibility or liability for any errors or inaccuracies that may
appear in the informational content contained in this material. For the purpose of clarity, Helmer Scientic considers only the most
recent revision of this document to be valid.
Notices and Disclaimers
Condential / Proprietary Notices
Use of any portion(s) of this document to copy, translate, disassemble or decompile, or create or attempt to create by reverse
engineering or otherwise the information from Helmer Scientic products is expressly prohibited.
Copyright and Trademark
Copyright © 2016 Helmer, Inc. Helmer®, i.Series®, i.C³®, Horizon Series™, and Rel.i™ are registered trademarks or trademarks of
Helmer, Inc. in the United States of America. All other trademarks and registered trademarks are the property of their respective
owners. Helmer, Inc., doing business as (DBA) Helmer Scientic and Helmer.
Disclaimer
This manual is intended as a guide to provide the operator with necessary instructions on the proper use and maintenance of
certain Helmer Scientic products.
Any failure to follow the instructions as described could result in impaired product function, injury to the operator or others, or void
applicable product warranties. Helmer Scientic accepts no responsibility for liability resulting from improper use or maintenance of
its products.
The screenshots and component images appearing in this guide are provided for illustrative purposes only, and may vary slightly
from the actual software screens and/or product components.
Helmer Scientic
14400 Bergen Boulevard
Noblesville, IN 46060 USA
www.helmerinc.com
ISO 13485:2003 CERTIFIED Part No. 360137-D/Rev E
Document History
Revision Date CO Supersession Revision Description
A 23 JAN 2013 8187 n/a Initial release.
B 04 DEC 2013* 8953 B supersedes A
• Removed all references to mechanical Access Control.
• Added references to magnetic Access Control.
• Corrected shipping location of monitoring system backup battery for Horizon
Series.
C 22 MAY 2014* 9497 C supersedes B • Added information to operating standards from technical audit.
• Revised specications for remote alarm contacts.
D 16 MAR 2015* 10319 D supersedes C
• Updated instruction in Section III, Items 9.2 through 9.7.1 to reect use of
monitor and control interface with new Min/Max temperature recording feature.
• Added Document Updates, to Document History page.
• Added Condential / Proprietary Notice, Section I, Item 1.4 and Disclaimer,
Section I, Item 1.5
• Moved Maintenance Schedule, i.Series®Components and Horizon Series™
Components to Appendices A, B and C.
E1 APR 2016 11750 E supersedes D and 360165-D
Rev A, B and C
• Combined all undercounter product model information into one manual
• Added product loading guidelines in response to CAPA 10843
• Updated AC power cord installation instructions
* Date submitted for Change Order review. Actual release date may vary.

Helmer Scientic i.Series® and Horizon Series™Freezer - Undercounter Operation Manual
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Contents
1 About this Manual................................................................................................ 4
1.1 Safety Precautions and Symbols ...............................................................................4
1.2 General Recommendations ...................................................................................5
2 Installation ...................................................................................................... 6
2.1 Location...................................................................................................6
2.2 Placement and Leveling ......................................................................................6
2.3 Stacked Undercounter Units...................................................................................6
2.4 AC Power Cord ............................................................................................. 6
2.5 Temperature Probes ......................................................................................... 6
2.6 Chart Recorder (if included) ...................................................................................7
3 i.Series®Operation ............................................................................................... 9
3.1 Initial Start Up .............................................................................................. 9
3.2 Operation ................................................................................................10
3.3 Change Temperature Setpoint ................................................................................10
3.4 Set Alarm Parameters ........................................................................................11
3.5 Active Alarms ..............................................................................................11
3.6 Mute and Disable Active Alarms ............................................................................... 12
4 i.Series®Access Control (Optional)................................................................................. 13
4.1 Setup.................................................................................................... 13
4.2 Open Freezer with Access Control ............................................................................. 14
5 Horizon Series™ Operation ....................................................................................... 15
5.1 Initial Power Up ............................................................................................15
5.2 Display Minimum and Maximum Monitor Temperature Recordings .................................................... 15
5.3 Set Parameter Values ....................................................................................... 16
5.4 Set Temperature Units....................................................................................... 17
5.5 Temperature Calibration O󰀨sets ............................................................................... 17
5.6 Set Alarm Setpoints.........................................................................................17
5.7 Active Alarms ............................................................................................. 18
5.8 Mute and Disable Audible Alarms ..............................................................................18
6 Horizon Series™ Access Control (Optional) ......................................................................... 19
6.1 Setup.................................................................................................... 19
7 ProductSpecications ........................................................................................... 20
7.1 Operating Standards........................................................................................20
8 Compliance .................................................................................................... 22
8.1 Regulatory Compliance...................................................................................... 22
8.2 WEEE Compliance ......................................................................................... 22
9 Preventive Maintenance .......................................................................................... 23
Appendix A......................................................................................................... 24
i.Series Parts ....................................................................................................24
Appendix B......................................................................................................... 25
Horizon Series Parts ..............................................................................................25

Helmer Scientic i.Series® and Horizon Series™Freezer - Undercounter Operation Manual
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Helmer Scientic i.Series® and Horizon Series™Freezer - Undercounter Operation Manual
360137-D/E 4
1 About this Manual
This manual provides information on how to use i.Series®and Horizon Series™undercounter laboratory and plasma storage
freezers. It is intended for use by end users of the freezer and authorized service technicians.
Models are indicated by a distinguishing model number that corresponds to the series, type, number of doors, and capacity of the
refrigerator. For example, “iLF105” refers to an i.Series Laboratory Freezer with 1 door and a capacity of 5 cu ft, while “HLF104”
refers to a Horizon Series Laboratory Freezer with 1 door and a capacity of 4 cu ft.
Generic references are used throughout this manual to group models that contain similar features. For example, “105 models”
refers to all models of that size (iPF104, iPF105, HPF104, HPF105, iLF104, iLF105, HLF104, HLF105). This manual covers all
undercounter freezers, which may be identied singly, by their size, or by their respective “Series.”
1.1 Safety Precautions and Symbols
Symbols found in this document
The following symbols are used in this manual to emphasize certain details for the user:
Task Indicates procedures which need to be followed.
Note Provides useful information regarding a procedure or operating technique when using Helmer
Scientic products.
NOTICE Advises the user against initiating an action or creating a situation which could result in damage to
equipment; person injury is unlikely.
CAUTION Advises the user against initiating an action or creating a situation which could result in damage
to equipment or impair the quality of the products or cause minor injury.
WARNING Advises the user against initiating an action or creating a situation which could result in damage
to equipment and serious personal injury to a patient or the user.
Manufacturer
Authorized representative in the European Community
Symbols found on the units
The following symbols may be found on the refrigerator or refrigerator packaging:
CE Mark (European units only) Earth / ground terminal
Caution: Risk of damage to equipment or
danger to operator Protective earth / ground terminal
Caution: Hot surface Compliance with Restriction of Hazardous
Substances Directive
Caution: Shock / electrical hazard Compliance with European Union Directive
WEEE 2002/96/EC applicable provisions.
Caution: Unlock all casters
EC REP

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Avoiding Injury
Review safety instructions before installing, using, or maintaining the equipment.
♦Before moving unit, ensure door is closed and casters (if installed) are unlocked and free of debris.
♦Before moving unit, disconnect the AC power cord and secure the cord.
♦Never physically restrict any moving component.
♦Avoid removing electrical service panels and access panels unless so instructed.
♦Keep hands away from pinch points when closing the door.
♦Avoid sharp edges when working inside the electrical compartment and refrigeration compartment.
♦Ensure biological materials are stored at recommended temperatures determined by standards, literature, or good
laboratory practices.
♦ Proceed with caution when adding and removing samples from the refrigerator.
♦Do not open multiple, loaded drawers or baskets at the same time.
♦Use manufacturer supplied power cord only.
♦ Using the equipment in a manner not specied by Helmer Scientic may impair the protection provided by the equipment.
♦Ensure biological materials are stored safely, in accordance with all applicable organizational, regulatory, and legal
requirements.
CAUTION
Decontaminate parts prior to sending for service or repair. Contact Helmer Scientic or your distributor for
decontamination instructions and a Return Authorization Number.
1.2 General Recommendations
Intended Use
Helmer freezers are intended for the storage of blood products and other medical and scientic products.
General Use
Allow freezer to come to room temperature before switching power on.
During initial startup, high temperature alarm may sound while freezer reaches operating temperature.
Initial Loading
Allow the freezer to reach room temperature before powering on. Allow chamber temperature to stabilize at the setpoint before
storing product.
Note
Do not overload top drawer, basket, or shelf such that airow from the unit cooler is obstructed.
Product Loading Guidelines
When loading your freezer, take care to observe the following guidelines:
♦Never load freezers beyond capacity.
♦Always store items within shelves, drawers or baskets.
♦ Temperature uniformity is maintained by air circulation, which could be impeded if unit is overlled, particularly at the top or
back. Ensure proper clearance is provided below the fan.
Note
Products stacked against back wall may obstruct air ow and a󰀨ect performance of unit.

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2 Installation
2.1 Location
♦ Has a grounded outlet meeting the electrical requirements listed on the product specication label.
♦Is clear of direct sunlight, high temperature sources, heating vents, and air conditioning vents.
♦Has a minimum of 3” (76 mm) of space behind the freezer for clearance and feature access.
♦ Meets the limits specied for ambient temperature (15 °C to 32 °C) and relative humidity.
2.2 Placement and Leveling
CAUTION
• To prevent tipping, ensure the casters (if installed) are unlocked and the door is closed before moving the freezer.
• Do not sit, lean, push or place heavy objects on top surface.
1. Move freezer into place. Lock casters if installed.
2. Ensure freezer is level.
Note
Helmer recommends the use of leveling feet and wall and oor brackets (PN 400472-2) for stabilization. Contact Helmer
Technical Service for parts and instruction.
2.3 Stacked Undercounter Units
CAUTION
• For stacked conguration, both units must have leveling feet installed.
• Back brace bars and front stabilizing brackets must be installed (Blue - PN 400821-1; Stainless Steel - PN 400821-2)
• When stacking units, place the heavier unit on the bottom.
• Do not open multiple loaded drawers or baskets at the same time.
Contact Helmer or your distributor for more information regarding the stacking kit and methods to secure both units to the wall
and / or oor.
2.4 AC Power Cord
CAUTION
Use manufacturer supplied power cord only.
Install power cord
If packaged with modular cord, insert plug securely into the freezer power receptacle prior to connecting to grounded
outlet.
2.5 Temperature Probes
Probe bottle along with a container of propylene glycol have been provided with this unit. The propylene glycol is mixed with water
to create a solution which simulates the product stored in the freezer. The product simulation solution temperature reects the
product’s temperature during normal operation.
Note
Temperature probes are fragile; handle with care.
CAUTION
Failure to ll probe bottles or keep probe bottles lled to the appropriate level may not allow the chamber temperature to
stabilize at the freezer setpoint or the chamber temperature to display higher or lower than the actual temperature.

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Primary Probe
The primary probe bottle is located at the top left side of the freezer.
Primary probe
Fill Temperature Probe Bottle
Note
Use approximately 4 oz. (120 mL) of product simulation solution (1:1 ratio of water to propylene glycol).
Propylene glycol is included in freezer box.
1. Remove all probes from bottle and remove bottle from bracket.
2. Remove cap and ll with approximately 4 oz. (120 mL) of product simulation solution.
3. Secure cap on bottle and place in bracket.
4. Replace probes, immersing at least 2” (50 mm) in solution.
2.6 Chart Recorder (if included)
Note
For complete information, refer to the Temperature Chart Recorder Operation and Service Manual provided with this unit.
The chart recorder has a back-up battery system enabling a period of continuous operation if power is lost. Battery life varies by
manufacturer as well as voltage level remaining. If full batter power is available, back-up power for the temperature chart recorder
is available for up to 14 hours.
Note
If chart recorder is operated on battery power, the battery should be replaced to ensure the back-up source has proper
charge.
Prior to use:
Place the chart recorder probe in bottle with primary probe.

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Set up and Operation
Access the chart recorder by pulling the door open.
Install battery
Connect the leads to the battery to provide back-up power to the chart recorder.
Install / Replace Chart Paper
Note
For accurate temperature reading, ensure the current time is aligned with the time line groove when the chart knob
is fully tightened.
Chart recorder stylus and time line groove
1. Press and hold C button. When stylus begins to move left, release button. The LED ashes.
2. When stylus stops moving, remove chart knob then move knob up and away from chart paper.
3. Place new chart paper on chart recorder.
4. Gently lift stylus and rotate paper so current time line corresponds to time line groove.
5. Hold chart paper in place while making sure the chart knob is fully tightened. (Failure to fully tighten the knob can result in paper
slipping and losing time.)
6. Conrm the temperature range is set to the correct value.
7. Press and hold C button. When the stylus begins to move right, release the button.
8. Conrm the stylus is marking the temperature correctly.
Power Supply
The temperature chart recorder uses AC power when the system is operating. If AC power fails, the recorder continues to record
temperature with back-up power provided by the nine volt battery.
♦The LED indicator glows green continually when main power is functioning and the battery is charged.
♦The LED indicator glows red continually when main power is functioning and the batteries is either not installed or needs to be
replaced.
♦ The LED indicator ashes red to indicated the recorder is receiving power only from the back-up battery.
♦ The LED indicator ashes during chart paper change mode.

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3 i.Series®Operation
3.1 Initial Start Up
1. Plug the power cord into a grounded outlet that meets the electrical requirements on the product specication label.
2. Switch AC ON/OFF switch ON.
3. Switch backup battery switch ON.
Notes
• For models equipped with optional Access Control, the back up battery is turned ON with a key switch.
• The Start screen is displayed when the i.C3is powered on. The i.C3will take approximately 2-5 minutes to boot up.
Start screen
On the Language screen, touch the Language button, then select the preferred language from the drop-down menu.
If English is the preferred language, touch the Home button.
Language screen
If an alarm sounds, temporarily mute the alarm by touching the Mute button.
Home screen - alarm muted
Note
Active alarms are displayed on the Home screen. If an alarm condition other than High Temperature occurs, refer to the
service manual for troubleshooting.
i.Series Operation

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3.2 Operation
Notes
• Refer to the i.C3User Guide for complete information regarding the i.C3User Interface
• The i.C3Home screen displays temperature and alarm information, and provides icons to gain access to
other functions of the i.C3.
• After two minutes of inactivity, the screensaver will be displayed. To return to the Home screen, touch
the screensaver.
Home screen Home screensaver (touch to return to Home screen)
3.3 Change Temperature Setpoint
> > Enter the Settings password. Scroll down to select Temperature setpoints. Touch + or - on the
spin box to change the value.
Settings screen Temperature Controller Programs screen
Notes
• Default Settings password is 1234.
• Default setpoint is -30.0 °C.
i.Series Operation

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3.4 Set Alarm Parameters
> > Enter the Settings password. Scroll down to select Alarm Settings. Touch + or - on spin box to set each alarm
parameter.
Settings screen Alarms screen
3.5 Active Alarms
Home with active alarm.
Table 1. i.Series Active Alarms
Alarm Description
High Temperature Chamber temperature reading is above high temperature alarm setpoint
Low Temperature Chamber temperature reading is below low temperature alarm setpoint
Low Battery Rechargeable battery voltage is low
Power Failure Power to unit has been disrupted
Probe Failure Probe not functioning properly
Door Open Door is open beyond user-specied duration
Compressor Temperature Compressor temperature reading is above high temperature alarm setpoint
Communication Failure
Messages 1, 2, 3
1 Communication lost between i.C³ display board and control board
2 Communication lost between i.C³ display board and internal system memory
3 Corrupt database
i.Series Operation

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3.6 Mute and Disable Active Alarms
Audible alarms may be muted by touching the Mute button to set delay.
:15
Unmuted Muted
Table 2. i.C3® Icon Reference Guide
Alarm Description Alarm Description Alarm Description
Home Download Scroll Arrows
Event Log Upload Defrost Cycle
Settings Temperature Graph Defrost Log
i.C³ Applications Information Log Access Control
Back Arrow Compressor Log Access Control Log
Alarm Conditions Icon Transfer Contact Helmer
Alarm Test Display Brightness Battery Power
Mute
i.Series Operation

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4 i.Series®Access Control (Optional)
Allows user-specic secure access to the freezer.
Note
• During a power failure, the optional Access Control lock will remain locked until battery power is depleted or until the
backup battery key switch is switched OFF.
• Switching the backup battery key switch OFF will disable the monitoring system.
• During a power failure, switch the battery backup switch OFF and use the mechanical door key to provide secure
storage for freezer contents.
• Refer to the i.C3User Guide for complete information regarding Access Control.
4.1 Setup
Congure and manage use-specic accounts to allow controlled access to the freezer.
> > > Access Setup
Access Control Setup Password screen
Enter the supervisor PIN to set up Access Control and follow the on-screen prompts to set up users.
Notes
• Initial factory supervisor PIN = 5625
• The supervisor PIN can not be deleted, and should be changed to prevent unauthorized user ID setup. The supervisor
PIN does not allow access to the unit. At least one user ID must be set up to gain access to the unit.
Access Control Setup screen
i.Series Operation

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4.2 Open Freezer with Access Control
Access Control keypad
Enter a valid PIN using the keypad.
i.Series Operation

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5 Horizon Series™ Operation
5.1 Initial Power Up
1. Plug the power cord into a grounded outlet that meets the electrical requirements on the product specication label.
2. Switch AC ON/OFF switch ON.
3. Remove the 9 V battery from the literature box and install it.
4. Press Down Arrow (Mute) if high temperature alarm sounds.
Note
• For models equipped with the optional Access Control, switch the backup battery key switch ON.
• If an alarm condition other than High Temperature occurs, refer to the service manual for troubleshooting.
Horizon Series™ temperature monitor and control interface.
5.2 Display Minimum and Maximum Monitor Temperature Recordings
Notes
• This feature is standard on Horizon Series™ models with serial numbers of 2015494 or higher. Some exceptions may
exist. For conrmation on your unit, please contact Helmer Technical Service.
• Units that do not include the minimum and maximum recording feature will not display .C or .F when entering the program
mode.
• The following steps only apply to the primary probe.
The minimum and maximum recording feature allows the user to view a minimum temperature occurrence and a maximum
temperature occurrence within a given period of time. The timer provides a time reference in which those temperatures occurred.
View minimum temperature recording.
1. Press and hold the Down Arrow button for 1 second and listen for a single beep.
2. The display will alternate between LO and a valid temperature value ve (5) times followed by a single beep to indicate
exit back to the temperature display.
View maximum temperature recording.
1. Press and hold the Up Arrow button for 1 second and listen for a single beep.
2. The display will alternate between HI and a valid temperature value ve (5) times followed by a single beep to indicate exit
back to the temperature display.
High and Low Temp Lamps LED Display SEL Button CONTROL and MONITOR Lamps
UP and DOWN Arrows
SET Button
Horizon Series Operation

Helmer Scientic i.Series® and Horizon Series™Freezer - Undercounter Operation Manual
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View recorded temperature timer.
Notes
• The timer denotes the period of time that has elapsed. It does not display the time at which a minimum or maximum
temperature occurred.
• The maximum period of time the timer can record is 99:59 (99 hours and 59 minutes).
1. Press and hold either the Up or Down Arrow button for 1 second.
2. While the display is ashing the HI or LO value, press and hold the SET button for 1 second.
3. The display will alternate ve (5) times between CLr and a value representing the number of hours and minutes that have
elapsed since the last recording (example: 12:47 would represent 12 hours and 47 minutes). A single beep will follow to
indicate exit back to temperature display.
Clear minimum and maximum temperature recordings.
1. Press and hold either the Up or Down Arrow button for 1 second.
2. While the display is ashing the HI or LO value, press and hold the SET button for 1 second and listen for a single beep.
3. While the display is ashing the elapsed time since last reset, press and hold the SET button for 2 seconds. CLr will be
displayed followed by a series of 3 beeps to indicate exit back to the temperature display.
Notes
The minimum and maximum temperature and timer will reset when:
• the unit is powered o󰀨 and battery backup is not engaged, or
• after 99 hours and 59 minutes have elapsed.
Change Freezer Temperature Setpoint
Note
Default setpoint is -30.0 °C
1. Press and release SEL to change to Control mode. The CONTROL lamp will illuminate.
2. Press and hold SET to display the current setpoint temperature.
3. Hold SET and press the Up or Down Arrow as necessary to set the desired setpoint value.
4. Release all buttons; the setpoint is changed.
5. Press and release SEL to return to Monitor mode. The MONITOR lamp will illuminate.
5.3 Set Parameter Values
1. Press and hold the Up and Down Arrows simultaneously for 3 seconds to enter program mode.
2. The LED Display will show .C or .F to indicate Celsius or Fahrenheit.
3. Press and release SEL button to scroll through the parameters.
4. Once the desired parameter is selected, press and hold the SET button while pressing the Up or Down Arrow to select
the desired value.
5. Release SET button. The new setting is saved.
6. Press and hold the Up and Down Arrows simultaneously for 3 seconds to exit program mode.
Note
Contact Helmer Technical Service to set Hysteresis values.
Horizon Series Operation

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Table 3. Parameter Values
Parameter Visual Indicator Range Default
Celsius or Fahrenheit None .C, .F .C
High Temperature MONITOR Lamp & HIGH Lamp -40.0 to 40.0 (°C); -40 to 104 (°F) -20.0°C
Low Temperature MONITOR Lamp & LOW Lamp -40.0 to 40.0 (°C); -40 to 104 (°F) -40.0°C
Monitor O󰀨set MONITOR Lamp -10.0 to 10.0 (°C); -18 to 18 (°F) Varies
Control O󰀨set CONTROL Lamp -10.0 to 10.0 (°C);-18 to 18 (°F) Varies
Hysteresis CONTROL Lamp 0.5 to 2.5 (°C); 1 to 5 (°F) 2.0°C
5.4 Set Temperature Units
Note
If temperature units are changed, the temperature setpoints, o󰀨sets and alarm settings must be recalibrated.
1. Press and hold the Up and Down Arrows simultaneously for 3 seconds to enter program mode.
2. The LED Display will show .C or .F to indicate Celsius or Fahrenheit.
3. Press and hold the SET button while pressing the Up or Down Arrow to select the desired temperature unit.
4. Release SET button. The new setting is saved.
5. Press and hold the Up and Down Arrows simultaneously for 3 seconds to exit program mode.
5.5 TemperatureCalibrationO󰀨sets
Temperature calibration o󰀨sets indicate an acceptable margin of error between the actual temperature value and the desired
temperature value.
Monitor Oset
♦ Value is factory-set to match a calibrated reference thermometer.
♦ Refer to the service manual for instructions in changing the Monitor O󰀨set.
Control Sensor Oset and Hysteresis
The control sensor a󰀨ects the reading of the control probe temperature and therefore the actual temperature of the freezer.
This should not be adjusted from the original setting unless directed by Helmer Technical Service.
Hysteresis helps control the refrigeration based on the control probe temperature reading and the set point and should not
be changed from the default setting.
NOTICE
Control Sensor O󰀨set and Hysteresis is factory-preset and should not be changed. Contact Helmer Technical Service for
instructions regarding changing the Control Sensor O󰀨set.
5.6 Set Alarm Setpoints
1. Press and hold the Up and Down Arrows simultaneously for 3 seconds to enter program mode.
2. The LED Display will show .C or .F to indicate Celsius or Fahrenheit.
3. Press SEL until HIGH TEMP or LOW TEMP and MONITOR lamps ash.
4. Hold SET, then press Up or Down Arrow to change the setpoint.
5. Release SET button. The new setting is saved.
6. Press and hold Up and Down Arrows simultaneously for 3 seconds to exit program mode.
Horizon Series Operation

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5.7 Active Alarms
The controller displays temperature and alarm information.
Table 4. Horizon Series Active Alarms
Alarm Visual Indicator Description
High Temperature HIGH TEMP lamp ashes Chamber temperature reading is above high
temperature alarm setpoint
Low Temperature LOW TEMP lamp ashes Chamber temperature reading is below low
temperature alarm setpoint
Power Failure ”PoFF” appears on display Power to unit has been disrupted
Probe Failure “Prob” appears on display Probe not functioning properly
Door Open < 3 min. DOOR ALARM lamp lights Door is open (less than three minutes)
Door Open > 3 min. DOOR ALARM lamp ashes Door has been open 3 minutes or longer*
*Audible alarm will sound after door is open for 3 minutes.
5.8 Mute and Disable Audible Alarms
Note
Muting audible alarms does not disable alarm lamps or signals sent through the remote alarm interface.
♦ Press Down Arrow (Mute) to mute audible alarms.
♦To disable all audible alarms, insert the key in the Alarm Disable switch and turn.
Horizon Series Operation

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6 Horizon Series™ Access Control (Optional)
Allows user-specic secure access to the freezer.
Note
• During a power failure, the optional Access Control lock will remain locked until battery power is depleted or until the
backup battery key switch is switched OFF.
• During a power failure, switch the battery backup switch OFF and use the mechanical door key to provide secure
storage for freezer contents.
• Refer to Horizon Series Access Control manual for complete information.
6.1 Setup
The Access Control keypad was programmed at the factory with a master code (0000). The master code is used to program the
keypad and enter user codes. The master code also releases the door lock.
Note
The master code can not be deleted, and should be changed to prevent unauthorized user code setup.
Enter unique user codes for up to 100 users. Each user code is stored with a specic record location number. Keep a log of the
location numbers and user codes with users’ names.
Add User Code
1. Enter the master code
2. Press 1to initiate user code programming function
3. Enter the location number (00 - 99)
4. Enter the user code (4 - 9 digit number)
5. Press *to save changes and return to normal operation
Delete User Code
1. Enter the master code
2. Press 1to initiate user code programming function
3. Enter the location number (00 - 99)
4. Press *to save changes
Open Freezer with Access Control
321
654
987
#0
1. Enter the user code
2. Press #
Horizon Series Operation