Helmer Scientific i.Series User manual
Freezer Operation Manual
i.Series®and Horizon Series™ - Undercounter
360376/C
Laboratory
i.Series
iLF104-ADA
iLF105
Horizon Series
HLF104-ADA
HLF105
Plasma Storage
i.Series
iPF104-ADA
iPF105
Horizon Series
HPF104-ADA
HPF105
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 Scientic. Helmer Scientic 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 Scientic considers only the most
recent revision of this document to be valid.
Notices and Disclaimers
Condential / 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 replicate the information from Helmer Scientic products is expressly prohibited.
Copyright and Trademark
Copyright © 2020 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 Scientic 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 Scientic 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 Scientic 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 Scientic
14400 Bergen Boulevard
Noblesville, IN 46060 USA
www.helmerinc.com
ISO 13485 CERTIFIED Part No. 360376/C
Document History
Revision Date CO Supersession Revision Description
A 30 NOV 2016 12335 n/a Initial release (all units with serial numbers 2036500 and greater).
B 26 FEB 2018 13354 B supersedes A Updated Mute Active Alarms text to provide more detail
Updated Horizon Access Control content for clarity.
Updated Emergo Address
C 5 JAN 2020 15180 C supersedes B Updated symbols and regulatory information
Remove duplication of PM schedule as it appears in UCF Service Manual.
*Date submitted for Change Order review. Actual release date may vary.
Helmer Scientic i.Series® and Horizon Series™Freezer - Undercounter Operation Manual
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Contents
1 About this Manual................................................................................................ 3
1.1 Safety Precautions and Symbols ...............................................................................3
1.2 General Recommendations ...................................................................................4
2 Installation ...................................................................................................... 5
2.1 Location...................................................................................................5
2.2 Placement and Leveling ......................................................................................5
2.3 Stacked Undercounter Units...................................................................................5
2.4 AC Power Cord.............................................................................................5
2.5 Temperature Probes ......................................................................................... 5
2.6 Chart Recorder (if included) ...................................................................................6
3 i.Series®Operation ............................................................................................... 8
3.1 Initial Start Up .............................................................................................. 8
3.2 Operation .................................................................................................9
3.3 Change Temperature Setpoint ................................................................................ 10
3.4 Set Alarm Parameters.......................................................................................10
3.5 Active Alarms ..............................................................................................11
3.6 Mute and Disable Active Alarms ...............................................................................12
4 Min/Max Temperature Monitoring .................................................................................. 13
5 i.Series®Access Control (Optional)................................................................................. 14
5.1 Setup.................................................................................................... 14
5.2 Open Freezer with Access Control ............................................................................. 14
6 Horizon Series™ Operation ....................................................................................... 15
6.1 Initial Power Up............................................................................................ 15
6.2 Display Minimum and Maximum Monitor Temperature Recordings .................................................... 15
6.3 Set Parameter Values ....................................................................................... 16
6.4 Set Temperature Units.......................................................................................17
6.5 TemperatureCalibrationOsets ............................................................................... 17
5.6 Set Alarm Setpoints (Parameters)..............................................................................17
6.7 Active Alarms .............................................................................................18
6.8 Mute and Disable Audible Alarms ..............................................................................18
7 Horizon Series™ Access Control (Optional) ......................................................................... 19
7.1 Setup.................................................................................................... 19
8 ProductSpecications ........................................................................................... 20
8.1 Operating Standards........................................................................................ 20
9 Compliance .................................................................................................... 22
9.1 Safety Compliance .........................................................................................22
9.2 Environmental Compliance...................................................................................22
Appendix A......................................................................................................... 23
i.Series Parts.................................................................................................... 23
Appendix B......................................................................................................... 24
Horizon Series Parts ..............................................................................................24
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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 (iPF105, HPF105, iLF105, HLF105). This manual covers all undercounter freezers, which may be
identiedsingly,bytheirsize,orbytheirrespective“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
Scienticproducts.
NOTICE Advises the user against initiating an action or creating a situation which could result in damage to
equipment; person injury is unlikely.
Symbols found on the units
The following symbols may be found on the freezer or freezer packaging:
Caution: Shock/electrical hazard Refer to documentation
Caution: Risk of damage to equipment or
danger to operator
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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 freezer.
♦Do not open multiple, loaded drawers or baskets at the same time.
♦Use manufacturer supplied power cord only.
♦ UsingtheequipmentinamannernotspeciedbyHelmerScienticmayimpairtheprotectionprovidedbytheequipment.
♦ Thefreezerisnotconsideredtobeastoragecabinetforammableorhazardousmaterials.
♦Ensure biological materials are stored safely, in accordance with all applicable organizational, regulatory, and legal
requirements.
♦REQUIRED: Decontaminate parts prior to sending for service or repair. Contact Helmer or your distributor for .
decontamination instructions and a Return Authorization Number.
1.2 General Recommendations
Intended Use
Helmerfreezersareintendedforthestorageofbloodproductsandothermedicalandscienticproducts.
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
Donotoverloadtopdrawer,basket,orshelfsuchthatairowfromtheunitcoolerisobstructed.
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.
♦ Temperatureuniformityismaintainedbyaircirculation,whichcouldbeimpededifunitisoverlled,particularlyatthetopor
back. Ensure proper clearance is provided below the fan.
Note
Productsstackedagainstbackwallmayobstructairowandaectperformanceofunit.
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2 Installation
2.1 Location
♦ Hasagroundedoutletmeetingtheelectricalrequirementslistedontheproductspecicationlabel.
♦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.
♦ Meetsthelimitsspeciedforambienttemperature(15°Cto32°C) and relative humidity.
2.2 Placement and Leveling
NOTICE
• 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
Helmerrecommendstheuseoflevelingfeetandwallandoorbrackets(PN400472-2)forstabilization.ContactHelmer
Technical Service for parts and instruction.
2.3 Stacked Undercounter Units
NOTICE
• Forstackedconguration,bothunitsmusthavelevelingfeetinstalled.
• Backbracebarsandfrontstabilizingbracketsmustbeinstalled(Blue-PN400821-1;StainlessSteel-PN400821-2)
• 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/oroor.
2.4 AC Power Cord
Use manufacturer supplied power cord only.
Note
Do not connect unit to a GFCI (Ground Fault Circuit Interrupter) protected outlet as nuisance tripping may occur.
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
A probe bottle along with a container of propylene glycol have been provided with this unit. The propylene glycol is mixed with
watertocreateasolutionwhichsimulatestheproductstoredinthefreezer.Theproductsimulationsolutiontemperaturereects
the product’s temperature during normal operation.
Note
Temperature probes are fragile; handle with care.
NOTICE
Failuretollprobebottlesorkeepprobebottleslledtotheappropriatelevelmaynotallowthechambertemperatureto
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stabilize at the freezer setpoint or the chamber temperature to display higher or lower than the actual temperature.
Primary Monitor Probe
The primary monitor probe bottle is located at the top left side of the freezer.
Primary monitor 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. Removecapandllwithapproximately4oz.(120mL)ofproductsimulationsolution.
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.
Thechartrecorderhasaback-upbatterysystemenablingaperiodofcontinuousoperationifpowerislost.Batterylifevariesby
manufactureraswellasvoltagelevelremaining.Iffullbatterpowerisavailable,back-uppowerforthetemperaturechartrecorder
is available for up to 14 hours.
Note
Ifchartrecorderisoperatedonbatterypower,thebatteryshouldbereplacedtoensuretheback-upsourcehasproper
charge.
Prior to use:
Place the chart recorder probe in bottle with primary monitor probe.
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Set up and Operation
Access the chart recorder by pulling the door open.
Install battery
Connecttheleadstothebatterytoprovideback-uppowertothechartrecorder.
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. PressandholdCbutton.Whenstylusbeginstomoveleft,releasebutton.TheLEDashes.
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. Conrmthetemperaturerangeissettothecorrectvalue.
7. Press and hold C button. When the stylus begins to move right, release the button.
8. Conrmthestylusismarkingthetemperaturecorrectly.
Power Supply
The temperature chart recorder uses AC power when the system is operating. If AC power fails, the recorder continues to record
temperaturewithback-uppowerprovidedbytheninevoltbattery.
♦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.
♦ TheLEDindicatorashesredtoindicatedtherecorderisreceivingpoweronlyfromtheback-upbattery.
♦ TheLEDindicatorashesduringchartpaperchangemode.
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3 i.Series®Operation
3.1 Initial Start Up
1. Plugthepowercordintoagroundedoutletthatmeetstheelectricalrequirementsontheproductspecicationlabel.
2. Switch AC ON/OFF switch ON.
3. Switchback-upbatteryswitchON.
Notes
• FormodelsequippedwithoptionalAccessControl,theback-upbatteryisturnedONwithakeyswitch.
• The Start screen is displayed when the i.C3is powered on. The i.C3willtakeapproximately2-5minutestobootup.
Start screen
The language screen is displayed when the i.C3is powered on. Use the Language screen to select the i.C3display language.
Language screens
Note
English is the default language.
i.Series Operation
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If an alarm sounds, temporarily mute the alarm by touching the Mute icon.
Home screen - alarm muted Mute icon
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.
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)
i.Series Operation
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3.3 Change Temperature Setpoint
Note
The Temperature Setpoint toggle button can be accessed from either the initial Settings screen or the Device Control
Settings screen.
> >EntertheSettingspassword.SelectTemperaturesetpoints.Touchminus(-)orplus(+)onthespinboxto
change the value.
Settings screen Device Control Settings screen
Notes
• Default Settings password is 1234.
• Defaultsetpointis-30.0°C.
3.4 Set Alarm Parameters
> >EntertheSettingspassword.ScrolldowntoselectAlarmSettings.Touchminus(-)orplus(+)onspinboxtoset
each alarm parameter.
Settings screen
Alarms screens
Alarm settings control the circumstances and timing of alarm condition indicators displayed on the i.C3Home screen.
i.Series Operation
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3.5 Active Alarms
Home with active alarm.
Table 1. i.Series Active Alarms
Alarm Description
Primary Monitor Probe High Temp Primary monitor probe reading is above high temperature alarm setpoint
Primary Monitor Probe Low Temp Primary monitor probe temperature reading is below low temperature alarm setpoint
Primary Monitor Probe Failure Primary monitor probe not functioning properly
Control Probe Failure Control probe not functioning properly
Evap Defrost Probe Failure Evaporator defrost probe not functioning properly
Compressor High Temperature Compressor temperature reading is above high temperature alarm setpoint
Compressor Probe Failure Compressor probe not functioning properly
Power Failure Power to unit has been disrupted
Door Open Doorisopenbeyonduser-speciedduration
Low Battery Rechargeable battery voltage is low
No Battery Battery is not connected
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
:15
Unmuted Muted
Audible alarms may be temporarily muted by touching the Mute icon. The delay duration can be set and changed by selecting
SoundSettingsfromtheSettingsscreen.Thedurationmaybesettoanyvaluefrom1-60minutes.Thedelaytimeremaining
will be displayed in the bottom right corner of the icon. If the alarm is still active after the mute delay has ended, the audible alarm
will sound.
> >EntertheSettingspassword.ScrolldowntoselectSoundSettings.Touchminus(-)orplus(+)onspinboxtoset
the mute duration.
Table 2. ApplicationIcons
Alarm Description Alarm Description Alarm Description Alarm Description
Home Temperature Graph Upload Save
Event Log Alarm Test Access Control Cancel
Mute Information Logs Access Log Back Arrow
Reset Contact Information/
Contact Helmer Defrost Cycle Scroll
Zoom Information Display Brightness Defrost Log Temperature Graph
Forward/Back
i.C³ Applications Icon Transfer Alarm Conditions Battery Power
Settings Download Cancel Test
i.Series Operation
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4 Min/Max Temperature Monitoring
The Min/Max temperature display provides the highest and lowest Primary Monitor probe temperature reading since the last
systemreset(power-onevent)ormanually-initiatedreset.TouchtheReseticontotherightofthedisplaytomanuallyreset.
Notes
• TheMin/MaxtemperaturedisplaycanbeturnedonorothroughDisplaySettings.
• Once the time reaches the maximum display of 999 hours and 60 minutes, the message will display “>999:60”, but
minimum and maximum temperatures will continue to be tracked.
i.Series Operation
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5 i.Series®Access Control (Optional)
Allowsuser-specicsecureaccesstothefreezer.
Notes
• During a power failure, the optional Access Control lock will remain locked until battery power is depleted or until the
back-upbatterykeyswitchisswitchedOFF.
• Duringapowerfailure,switchingtheback-upbatterykeyswitchOFFwilldisablethemonitoringsystem.
• Duringapowerfailure,switchthebatteryback-upswitchOFFandusethemechanicaldoorkeytoprovidesecure
storage for freezer contents.
• Refer to the i.C3User Guide for complete information regarding Access Control.
5.1 Setup
Congureandmanageuser-specicaccountstoallowcontrolledaccesstothefreezer.
> > Access Setup
Access Control Setup Password screen Access Control Setup screen
EnterthesupervisorPINtosetupAccessControlandfollowtheon-screenpromptstosetupusers.
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.
5.2 Open Freezer with Access Control
Access Control keypad
Enter a valid PIN using the keypad.
i.Series Operation
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6 Horizon Series™ Operation
6.1 Initial Power Up
1. Plugthepowercordintoagroundedoutletthatmeetstheelectricalrequirementsontheproductspecicationlabel.
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.
Notes
• FormodelsequippedwiththeoptionalAccessControl,switchtheback-upbatterykeyswitchON.
• Duringapowerfailure,theback-upbatterycontinuestoprovidepowertotheoptionalAccessControllock(ifequipped).
Iftheback-upbatteryisnotfunctioning,theoptionalAccessControllockwillnotsecurethedoor.
• If an alarm condition other than High Temperature occurs, refer to the service manual for troubleshooting.
Horizon Series™ temperature monitor and control interface.
6.2 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.Forconrmationonyourunit,pleasecontactHelmerTechnicalService.
• Units that do not include the minimum and maximum recording feature will not display .C or .F when entering the
program mode.
• This feature only applies to the primary monitor 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 LOandavalidtemperaturevalueve(5)timesfollowedbyasinglebeeptoindicate
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 HIandavalidtemperaturevalueve(5)timesfollowedbyasinglebeeptoindicateexit
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
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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. WhilethedisplayisashingtheHI or LO value, press and hold the SET button for 1 second.
3. Thedisplaywillalternateve(5)timesbetweenCLr 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). Asingle 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. WhilethedisplayisashingtheHI or LO value, press and hold the SET button for 1 second and listen for a single beep.
3. Whilethedisplayisashingtheelapsedtimesincelastreset,pressandholdtheSET 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:
• theunitispoweredoandbatteryback-upisnotengaged,or
• after 99 hours and 59 minutes have elapsed.
Change Freezer Temperature Setpoint
Note
Defaultsetpointis-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.
6.3 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 -40.0to40.0(°C);-40to104(°F) -20.0°C
Low Temperature MONITOR Lamp & LOW Lamp -40.0to40.0(°C);-40to104(°F) -40.0°C
MonitorOset MONITOR Lamp -10.0to10.0(°C);-18to18(°F) Varies
ControlOset CONTROL Lamp -10.0to10.0(°C);-18to18(°F) Varies
Hysteresis COOL Lamp 0.5to2.5(°C);1to5(°F) 2.0°C
6.4 Set Temperature Units
Note
Iftemperatureunitsarechanged,thetemperaturesetpoints,osetsandalarmsettingsmustberecalibrated.
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.
6.5 TemperatureCalibrationOsets
Temperaturecalibrationosetsindicateanacceptablemarginoferrorbetweentheactualtemperaturevalueandthedesired
temperature value.
Monitor Oset
♦ Valueisfactory-settomatchacalibratedreferencethermometer.
♦ RefertotheservicemanualforinstructionsinchangingtheMonitorOset.
Control Sensor Oset and Hysteresis
Thecontrolsensoraectsthereadingofthecontrolprobetemperatureandthereforetheactualtemperatureofthefreezer.
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
ControlSensorOsetandHysteresisarefactory-presetandshouldnotbechanged.ContactHelmerTechnicalServicefor
instructions regarding changing these values.
5.6 Set Alarm Setpoints (Parameters)
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 SELuntilHIGHTEMPorLOWTEMPandMONITORlampsash.
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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6.7 Active Alarms
The controller displays temperature and alarm information.
Table 4. Horizon Series Active Alarms
Alarm Visual Indicator Description
High Temperature HIGHTEMPlampashes Chamber temperature reading is above high
temperature alarm setpoint
Low Temperature LOWTEMPlampashes 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. DOORALARMlampashes Door has been open 3 minutes or longer*
*Audible alarm will sound after door is open for 3 minutes.
6.8 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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7 Horizon Series™ Access Control (Optional)
Allowsuser-specicsecureaccesstothefreezer.
Notes
• During a power failure, the optional Access Control lock will remain locked until battery power is depleted or until the
back-upbatterykeyswitchisswitchedOFF.
• Duringapowerfailure,switchthebatteryback-upswitchOFFandusethemechanicaldoorkeytoprovidesecure
storage for freezer contents.
• Refer to Horizon Series Access Control manual for complete information.
7.1 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 should be changed to prevent unauthorized user code setup.
Enteruniqueusercodesforupto100users.Eachusercodeisstoredwithaspecicrecordlocationnumber.Keepalogofthe
location numbers and user codes with users’ names.
Add User Code
1. Enter the master code followed by the *(asterisk) key
2. Press 1to initiate user code programming function
3. Enterthelocationnumber(00-99)
4. Entertheusercode(4-8digitnumber)followedbythe#(pound)key
5. Press *(asterisk) to save changes and return to normal operation
Delete User Code
1. Enter the master code followed by the *(asterisk) key
2. Press 1to initiate user code programming function
3. Enterthelocationnumber(00-99)followedbythe#(pound)key
4. Press *(asterisk) to save changes and return to normal operation
Open Freezer with Access Control
321
654
987
#0
1. Enter the user code
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Horizon Series Operation
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