Helmer i Series User manual

360378/A/C
Refrigerator Operation Manual
i.Series®and Horizon Series™ - Pass- Thru
Pharmacy
i.Series
iPR225, iPR456
Horizon Series
HPR225, HPR456
Blood Bank
i.Series
iB225, iB456
Horizon Series
HB225, HB456
360378/C

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 replicate the information from Helmer Scientic products is expressly prohibited.
Copyright and Trademark
Copyright © 2019 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 Part No. 360378/C
Document History
Revision Date CO Supersession Revision Description
A 14 NOV 2016 12315 n/a Initial release (all units with serial number 2035000 and greater).
B 22 JAN 2018 13277 B supersedes A Updated Mute Active Alarms text toprovide more detail Updated Table 2. Application icons
Updated hysteresis values in Table 3. Parameter Values
C 6 JUN 2019 14712 C supersedes B Added Section 5 to include information for the i.Lock Interlock feature.
* Date submitted for Change Order review. Actual release date may vary.

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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 Temperature Probes .........................................................................................6
2.4 Chart Recorder (If Included) ................................................................................... 8
3 i.Series®Operation .............................................................................................. 10
3.1 Initial Power-Up............................................................................................10
3.2 Operation .................................................................................................11
3.3 Change Temperature Setpoint .................................................................................11
3.4 Set Alarm Parameters.......................................................................................12
3.5 Active Alarms .............................................................................................13
3.6 Mute and Disable Active Alarms ...............................................................................13
3.7 Light Operation ............................................................................................ 14
4 Min/Max Temperature Monitoring .................................................................................. 15
5 i.Lock™ Interlock Feature (Optional - Pharmacy models only) .......................................................... 16
6 Horizon Series™ Operation ....................................................................................... 17
6.1 Initial Power Up............................................................................................17
6.2 Display Minimum and Maximum Monitor Temperature Recordings .................................................... 17
6.3 Change Temperature Setpoint ................................................................................ 18
6.4 Set Parameter Values ....................................................................................... 19
6.5 Set Temperature Units....................................................................................... 19
6.6 TemperatureCalibrationO󰀨sets ............................................................................... 19
6.7 Set Alarm Setpoints (Parameters)..............................................................................20
6.8 Active Alarms .............................................................................................20
6.9 Mute and Disable Audible Alarms .............................................................................. 20
6.10 Light Operation ............................................................................................ 20
7 ProductSpecications ........................................................................................... 21
7.1 Operating Standards........................................................................................21
8 Compliance .................................................................................................... 23
8.1 Safety Compliance .........................................................................................23
8.2 Environmental Compliance...................................................................................23
8.3 EMC Compliance .......................................................................................... 23
Appendix A......................................................................................................... 24
i.Series Parts....................................................................................................24
Appendix B......................................................................................................... 25
Horizon Series Parts ..............................................................................................25

Helmer Scientic i.Series® and Horizon Series™ Pass-Thru Refrigerator Operation Manual
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Helmer Scientic i.Series® and Horizon Series™ Pass-Thru Refrigerator Operation Manual
360378/C 4
1 About this Manual
This manual provides information on how to use i.Series® and Horizon Series™ blood bank and pharmacy refrigerators. It is
intended for use by end users of the refrigerator 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
freezer. For example, “iPR225” refers to an i.Series Pharmacy Refrigerator with 2 doors and a capacity of 25 cu ft.
Generic references are used throughout this manual to group models that contain similar features. For example, “225 models”
refers to all models of that size (iB225, HB225, iPR225, HPR225). This manual covers all pass-thru refrigerators, 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 doors are closed and casters are unlocked and free of debris.
♦Before moving unit, disconnect the AC power cord and secure the cord.
♦Do not open multiple, loaded drawers at the same time.
♦Do not move a unit whose load exceeds 900 lbs / 408 kg (single-door units) or 1350 lbs / 612 kg (double-door units).
♦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.
♦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.
♦ Decontaminatepartspriortosendingforserviceorrepair.ContactHelmerScienticoryourdistributorfor
decontamination instructions and a Return Authorization Number.
♦Ensure biological materials are stored safely, in accordance with all applicable organizational, regulatory, and legal requirements.
♦ Therefrigeratorisnotconsideredtobeastoragecabinetforammableorhazardousmaterials.
CAUTION
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
Helmerrefrigeratorsareintendedforthestorageofbloodproductsandothermedicalandscienticproducts.
General Use
Allow refrigerator to come to room temperature before powering on.
During initial startup, high temperature alarm may activate while refrigerator reaches operating temperature.
Initial Loading
Allow chamber temperature to stabilize at the setpoint before storing product.
Product Loading Guidelines
When loading your refrigerator, take care to observe the following guidelines:
♦Never load refrigerators 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
against the doors or walls. Ensure proper clearance is provided below the fan.
Note
Productsstackedagainstwallsordoors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, and heating and air conditioning vents.
♦Minimum 8“ (203 mm) above.
♦ Meetslimitsspeciedforambienttemperature(15˚Cto32˚C)andrelativehumidity.
♦Clearance above the clean room side may be 0”.
♦Top enclosure cannot be placed more than 11” (280 mm) from the front (clean room side) of the refrigerator.
♦ Sideenclosuresmaybeushwithbothsidesoftherefrigerator.
8” MINIMUM
OVERHEAD
CLEARANCE
“CLEAN ROOM”
SIDE
TOP ENCLOSURE CAN NOT
EXTEND MORE THAN 11”
FROM “CLEAN ROOM” SIDE
OF REFRIGERATOR
0” MINIMUM
CLEARANCE
(BOTH SIDES)
CONTROL /
“NON-CLEAN ROOM”
SIDE
0” MINIMUM
OVERHEAD
CLEARANCE
Clearance requirements for pass-thru refrigerator enclosure.
2.2 Placement and Leveling
CAUTIONS
• To prevent tipping, ensure the casters are unlocked, and the doors are closed before moving the refrigerator.
1. Roll refrigerator into place and lock casters.
2. Ensure refrigerator is level.
2.3 Temperature Probes
Probe bottle(s) along with a container of glycerin have been provided with this unit. The glycerin is used to create a solution which
simulatestheproductstoredintherefrigerator.Theproductsimulationsolutiontemperaturereectstheproduct’stemperature
during normal operation.
Notes
• Temperature probes are fragile; handle with care.
• Number and location of probes varies by model.
• Remote probes may also be introduced through the existing top port.

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Primary Monitor Probe
The primary monitor probe is located in the top right corner of the refrigerator (as accessed from the clean room side).
Primary monitor probe with optional chart recorder probe
Secondary Probe
The secondary probe is located in the lower right corner of the refrigerator.
Secondary probe
Fill Temperature Probe Bottle
Note
For each probe bottle, use approximately 4 oz. (120 mL) of product simulation solution (10:1 ratio of water to glycerin)
(Packet included in refrigerator 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.
Install Additional Probe Through Top Port
Top access port
1. Peel back putty to expose port.
2. Insert probe through port into chamber.
3. Insert probe into bottle.
4. Replace putty, ensuring a tight seal.

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2.4 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 battery 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 probe in bottle with primary monitor probe.
Set up and Operation
Access chart recorder by pressing and releasing (i.Series) or pulling door open (Horizon Series).
i.Series chart door Horizon Series chart door
Install battery.
Connect the leads to the battery to provide back-up power to the chart recorder.

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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.
3. Place 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. Press and hold C button. When stylus begins to move right, release button.
7. Conrmstylusismarkingonpaperandstopsatthecorrecttemperature.
8. Calibrate chart recorder to match primary temperature if needed and close recorder door.
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 battery is either not installed or needs to be
changed.
♦ TheLEDindicatorashesredtoindicatethat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 Power-Up
1. Plugthepowercordintoagroundedoutletthatmeetstheelectricalrequirementsontheproductspecicationlabel.
2. Turn theAC power switch ON.
3. Turn the Back-up battery switch ON.
Note
The Start screen is displayed when the i.C3is powered on. The i.C3will take approximately 2-5 minutes to boot up.
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.
If an alarm sounds, temporarily mute the alarm by touching the Mute button.
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.
i.Series Operation

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3.2 Operation
Notes
• Refer to the i.C3 User Guide for complete information regarding the i.C3User Interface.
• The i.C³ Home 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
Note
The Temperature Setpoint toggle button can be accessed from either the initial Settings screen or the Device Control
Settings screen.
> > Enter the Settings password. Select Temperature Setpoints. Touch minus (-) or plus (+) on spin box to
change value.
Settings screen Device Control Settings screen
Notes
• Default Settings password is 1234.
• Default setpoint is 4.0 °C.
i.Series Operation

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3.4 Set Alarm Parameters
> > Enter the Settings password. Scroll down to select Alarm Settings. Touch minus (-) or plus (+) on spin box to
set each alarm parameter.
Settings screen
Alarms screens
Alarm settings control the conditions and timing of alarm condition indicators displayed on the i.C³ Home screen.
i.Series Operation

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3.5 Active Alarms
Home screen 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
Secondary Monitor Probe High Temp
(if installed) Secondary monitor probe reading is above high temperature alarm setpoint
Secondary Monitor Probe Low Temp
(if installed) Secondary monitor probe temperature reading is below low temperature alarm setpoint
Secondary Monitor Probe Failure
(if installed) Secondary monitor probe not functioning properly
Control Probe Failure Control 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 Doorisopenbeyonduser-speciedduration
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
3.6 Mute and Disable Active Alarms
Audible alarms may be muted by touching the Mute icon to set delay. Touching the Mute icon repeatedly will increase the Mute
delay timer incrementally between 5 - 60 minutes. The delay time remaining 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.
Unmuted Muted
i.Series Operation

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3.7 Light Operation
Press Light Icon to turn LED lights ON or OFF.
AutoON/OFFfeaturecanbeconguredinSettings.
Light ON/OFF
Table 2. Application Icons
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
*= units with serial numbers prior to 2044369. Some exceptions may apply.
Contact Helmer Technical Service at [email protected] for details.
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
system reset (power-on event) or manually-initiated reset. Touch the Reset icon to the right of the display to manually reset.
Notes
• TheMin/Maxtemperaturedisplaycanbeturnedonoro󰀨throughDisplaySettings.
• 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.Lock™ Interlock Feature (Optional - Pharmacy models only)
The i.Lock™ Interlock feature is an electronically-activated magnetic lock which prohibits doors on opposite sides of the unit from
being opened at the same time. This feature minimizes the risk of contaminating product or allowing airborne particulates to
transfer from the uncontrolled side (ante-room or “dirty” room) to the clean room side of the unit.
Notes
• The interlock feature does not restrict the use of both the left and right doors on the same side of a double door unit.
• During a power failure, the optional door interlock feature will continue to prevent opposite doors from being opened
simultaneously until battery power is depleted or until the back-up battery switch is switched OFF.
• During a power failure, switch the battery back-up switch OFF and use the mechanical door key to provide secure
storage for refrigerator contents.
i.Series Operation

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6 Horizon Series™ Operation
6.1 Initial Power Up
1. Plugthepowercordintoagroundedoutletthatmeetstheelectricalrequirementsontheproductspecicationlabel.
2. Turn theAC power switch ON.
3. Install 9 V back-up battery located on top of unit.
4. Press Down Arrow (Mute) if high temperature alarm sounds.
Note
If an alarm condition other than High Temperature occurs, refer to the service manual for troubleshooting.
Monitor and Control Panel
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.Forconrmationonyourunit,pleasecontactHelmerTechnicalService.
• This feature only applies to the Monitor temperature probe.
• Units which do not include the minimum and maximum recording featurewillnotdisplay˚Cor˚Fwhenenteringthe
program mode.
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 one (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 one (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.
LED Display
High & Low Temperature Lamps
Alarm Disable Switch
Light Switch
SEL Button
Monitor Lamp
Control Lamp
Up & 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. or
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. or
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back-upisnotengaged,or
• after 99 hours and 59 minutes have elapsed.
6.3 Change Temperature Setpoint
Note
Default setpoint is 4.0°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.
Horizon Series Operation

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6.4 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.
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25.0(˚C);-40to77(˚F) 5.5˚C
Low Temperature MONITOR Lamp & LOW Lamp -40.0to25.0(˚C);-40to77(˚F) 1.5˚C(HB);2.0˚C(HPR)
Monitor Offset MONITOR Lamp -10.0to10.0(˚C);-18to18(˚F) Varies
Control Offset 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
6.5 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.
6.6 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
♦Adjust if temperature displayed on the monitor does not correspond to the tepmerature reading of a calibrated reference
thermometer in the same probe bottle.
♦Value is factory-set to match a calibrated reference thermometer.
♦ Refertotheservicemanualforinstructionsregarding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
refrigerator. 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arefactory-presetandshouldnotbechanged.ContactHelmerTechnicalServicefor
instructions regarding changing these values.
Horizon Series Operation