Helmer Scientific i.Series User manual

Model
Group i.Series Horizon Series
Plasma iPF104-ADA (Version D)
iPF105 (Version D)
iPF120, iPF125 (Version D)
HPF104-ADA (Version D)
HPF105 (Version D)
HPF120, HPF125 (Version D)
Laboratory iLF104-ADA (Version D)
iLF105 (Version D)
iLF120, iLF125 (Version D)
HLF104-ADA (Version D)
HLF105 (Version D)
HLF120, HLF125 (Version D)
Freezer Instructions for Use
i.Series™ and Horizon Series™
Upright - Undercounter
Laboratory
i.Series
iLF104-ADA
iLF105
iLF120
iLF125
Horizon Series
HLF104-ADA
HLF105
HLF120
HLF125
Plasma Storage
i.Series
iPF104-ADA
iPF105
iPF120
iPF125
Horizon Series
HPF104-ADA
HPF105
HPF120
HPF125
360380-ENG/B

Document History
Revision Date CO Supersession Revision Description
A 17 JAN 2017* 12551 n/a Initial release (all upright units with serial numbers 2035000 and greater; all undercounter units
with serial numbers 2036500 and greater).
B 15 JUN 2020 15413 B supersedesA The use of safety precautions and symbols have been updated throughout the manual.
Updated Compliance section to reect change in notied body.
* Date submitted for Change Order review. Actual release date may vary.
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 © 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 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. 360380-ENG/Rev B

Contents
1 About this Manual ................................................................................................ 1
1.1 Intended Audience ..........................................................................................1
1.2 Model Reference............................................................................................1
1.3 Intended Use...............................................................................................1
1.4 Safety Symbols and Precautions ...............................................................................1
1.5 Avoiding Injury..............................................................................................2
1.6 General Recommendations ...................................................................................2
2 Installation ...................................................................................................... 3
2.1 Location...................................................................................................3
2.2 Placement and Leveling ......................................................................................3
2.3 Stacked Undercounter Units................................................................................... 3
2.4 AC Power Cord............................................................................................. 3
2.5 Temperature Probes .........................................................................................4
2.6 Chart Recorder (if included) ................................................................................... 5
3 i.Series®Operation ............................................................................................... 7
3.1 Initial Power-Up.............................................................................................7
3.2 Operation .................................................................................................8
3.3 Change Temperature Setpoint .................................................................................8
3.4 Set Alarm Parameters........................................................................................9
3.5 Active Alarms .............................................................................................10
3.6 Mute and Disable Active Alarms ................................................................................11
4 Min/Max Temperature Monitoring .................................................................................. 12
5 i.Series®Access Control (Optional)................................................................................. 13
5.1 Set Up................................................................................................... 13
5.2 Open Freezer with Access Control ............................................................................. 13
6 Horizon Series™Operation........................................................................................ 14
6.1 Initial Power Up............................................................................................14
6.2 Display Minimum and Maximum Monitor Temperature Recordings .................................................... 15
6.3 Change Freezer Temperature Setpoint..........................................................................15
6.4 Set Parameter Values ....................................................................................... 16
6.5 Set Temperature Units....................................................................................... 16
6.6 Temperature Calibration O󰀨sets ............................................................................... 16
6.7 Set Alarm Setpoints (Parameters).............................................................................. 17
6.8 Active Alarms .............................................................................................17
6.9 Mute and Disable Audible Alarms .............................................................................. 17
7 Horizon Series™Access Control (Optional) .......................................................................... 18
7.1 Setup....................................................................................................18
8 ProductSpecications ........................................................................................... 19
8.1 Operating Standards........................................................................................19
9 Compliance .................................................................................................... 22
9.1 Safety Compliance ......................................................................................... 22
9.2 Environmental Compliance................................................................................... 22
9.3 EMC Compliance ..........................................................................................22
Helmer Scientic i.Series™-Horizon Series™Freezer Instructions for Use
360380-ENG/B ii

1 About this Manual
1.1 Intended Audience
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.
1.2 Model Reference
Models are indicated by a distinguishing model number that corresponds to the series, type, and capacity of the freezer. For
example, “iLF105” refers to an i.Series Laboratory Freezer with 1 door and a capacity of 5 cu ft.
1.3 Intended Use
Helmer freezers are intended for the storage of blood products and other medical and scientic products.
1.4 Safety Symbols and Precautions
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; personal injury is unlikely.
Symbols and Labels found on the units
The following symbols may be found on the freezer or freezer packaging:
Caution: Risk of damage to equipment or
danger to operator Caution: Shock / electrical hazard
Caution: Hot surface Refer to documentation
Helmer Scientic i.Series™-Horizon Series™Freezer Instructions for Use
360380-ENG/B 1

1.5 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.
♦Do not move a unit whose load exceeds 900 lbs / 408 kg.
♦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.
♦ 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 or your distributor for decontamination
instructions and a ReturnAuthorization Number.
1.6 General Recommendations
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.
Do not remove the cover from the condensate evaporator tray.
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.
Helmer Scientic i.Series™-Horizon Series™Freezer Instructions for Use
360380-ENG/B 2

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.
♦Upright units require minimum 8” (203 mm) above, and minimum 3” (76 mm) behind.
♦Undercounter units require minimum 3” behind the unit for clearance and feature access.
♦ Meets limits specied for ambient temperature 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 use the water evaporation tray, located on the rear of the upright freezer, as a handle. The tray may be hot.
• Do not sit, lean, push or place heavy objects on top surface of undercounter units.
1. Roll freezer into place. Lock casters if installed.
2. Ensure freezer is level.
Note
Helmer recommends the use of leveling feet. Contact Helmer Technical Service for parts and instruction.
2.3 Stacked Undercounter Units
NOTICE
• 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
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.
Ensure power cord has been secured with strain relief zip tie.
Upright models Undercounter models
Helmer Scientic i.Series™-Horizon Series™Freezer Instructions for Use
360380-ENG/B 3

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
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.
NOTICE
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.
Primary Monitor Probe
The primary monitor probe bottle is located at the top left side of the freezer.
Upright probe bottle Undercounter probe bottle
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.
Helmer Scientic i.Series™-Horizon Series™Freezer Instructions for Use
360380-ENG/B 4

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 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.
Setup 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.
Helmer Scientic i.Series™-Horizon Series™Freezer Instructions for Use
360380-ENG/B 5

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 the recorder is receiving power only from the back-up battery.
♦ The LED indicator ashes during chart paper change mode.
Helmer Scientic i.Series™-Horizon Series™Freezer Instructions for Use
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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.
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
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 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.
Helmer Scientic i.Series™-Horizon Series™Freezer Instructions for Use
360380-ENG/B 7

3.2 Operation
Notes
• Refer to the i.C3User 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 the spin box to
change the value.
Settings screen Device Control Settings screen
Notes
• Default Settings password is 1234.
• Default setpoint is -30.0 °C.
Helmer Scientic i.Series™-Horizon Series™Freezer Instructions for Use
360380-ENG/B 8

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 circumstances and timing of alarm condition indicators displayed on the i.C³ Home screen.
Helmer Scientic i.Series™-Horizon Series™Freezer Instructions for Use
360380-ENG/B 9

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
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 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
Helmer Scientic i.Series™-Horizon Series™Freezer Instructions for Use
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3.6 Mute and Disable Active Alarms
Audible alarms may be muted by touching the Mute icon to set delay.
Unmuted Muted
Table 2. i.C3® Icon Reference Guide
Icon Description Icon Description Icon Description Icon 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
Foward/Back
i.C³ Applications Icon Transfer Alarm Conditions Battery Power
Settings Download Cancel Test
Helmer Scientic i.Series™-Horizon Series™Freezer Instructions for Use
360380-ENG/B 11

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.
Helmer Scientic i.Series™-Horizon Series™Freezer Instructions for Use
360380-ENG/B 12

5 i.Series®Access Control (Optional)
Allows user-specic secure access to the freezer.
Notes
• During a power failure, the optional Access Control lock will remain locked until battery power is depleted or until the
back-up battery key switch is switched OFF.
• Switching the back-up battery key switch OFF will disable the monitoring system during a power failure.
• During a power failure, switch the battery back-up switch OFF and use the mechanical door key to provide secure
storage for freezer contents.
5.1 Set Up
Congure and manage user-specic accounts to allow controlled access to the freezer.
> > Access Set Up
Access Control Setup Password screen Access Control Setup screen
Enter the supervisor PIN to set up Access Control and follow the on-screen prompts to add, delete or edit user information.
Notes
• Initial factory supervisor PIN = 5625
• The supervisor PIN cannot 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.
Helmer Scientic i.Series™-Horizon Series™Freezer Instructions for Use
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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 provided (undercounter battery located in literature box; upright battery located on top of unit).
4. Press Down Arrow (Mute) if high temperature alarm sounds.
Notes
• For models equipped with optional Access Control, the back-up battery is turned ON with a key switch.
• If an alarm condition other than High Temperature occurs, refer to the service manual for troubleshooting.
Upright Interface Undercounter Interface
Table 3. Access Control Interface Functions
Label Description Function
A COOL lamp Indicates the compressor is running.
BHIGH TEMP lamp Indicates when the freezer is in a high temperature alarm condition. Also indicates the
high alarm temperature setpoint is being changed.
CLOW TEMP lamp Indicates when the freezer is in a low temperature alarm condition. Also indicates the
low alarm temperature setpoint is being changed.
DDOOR ALARM lamp Indicates when the door is open.
EUPARROW button Increases a temperature setting.
FDOWN ARROW button Decreases a temperature setting. Also mutes the audible alarm for ve minutes.
G SEL button Toggles between alarm monitor and control modes.
H SET lamp Indicates when temperature setpoint or alarm setpoint is being changed.
I LED Display Displays real-time temperature information, setpoints, and alarms.
J SET button Allows settings to be selected, prior to changing settings.
K CONTROL lamp Indicates when the reading from the control probe is displayed.
L MONITOR lamp Indicates when the display is showing temperature readings from the monitor probe.
Also indicates when alarm setpoints are being changed.
A
B
C
D
E
F
G
H
I
J
K
L
BC A G E F
D H I KL J
Helmer Scientic i.Series™-Horizon Series™Freezer Instructions for Use
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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 Primary Monitor 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 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.
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 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.
Helmer Scientic i.Series™-Horizon Series™Freezer Instructions for Use
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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 4. 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
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
♦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 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 are factory-preset and should not be changed. Contact Helmer Technical Service for
instructions regarding changing these values.
Helmer Scientic i.Series™-Horizon Series™Freezer Instructions for Use
360380-ENG/B 16

6.7 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 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.
6.8 Active Alarms
The controller displays temperature and alarm information.
Table 5. 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.
6.9 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.
Helmer Scientic i.Series™-Horizon Series™Freezer Instructions for Use
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