Helmer I series Installation and user guide

360127-D/E

Freezer Service and Maintenance Manual

i.Series®and Horizon Series™

360427/A

Laboratory

i.Series

iLF120-GX

iLF125-GX

Horizon Series

HLF120-GX

HLF125-GX

Plasma Storage

i.Series

iBF120-GX

iBF125-GX

Horizon Series

HBF120-GX

HBF125-GX

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.

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. 360427/A

Document History

Revision Date CO Supersession Revision Description

A8 APR 2021 15919 n/a Initial release.

* Date submitted for Change Order review. Actual release date may vary.

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Contents

1 About This Manual...................................................................................4

1.1 Intended Audience...............................................................................4

1.2 Model Reference................................................................................4

1.3 Intended Use...................................................................................4

1.4 Safety Symbols and Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.5 Avoiding Injury..................................................................................5

1.6 Model and Input Power ...........................................................................5

1.7 Product Labels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

i.Series Information............................................................................7

2 InstallationandConguration .........................................................................7

2.1 Location Requirements ...........................................................................7

2.2 Placement and Leveling ..........................................................................7

2.3 Connect Back-Up Power..........................................................................7

2.4 Prepare for Monitoring............................................................................8

2.5 CongureStorage ...............................................................................11

3 Controls...........................................................................................13

3.1 Home Screen and Screensaver ...................................................................13

3.2 Home Screen Functions .........................................................................13

3.3 Alarm Reference ...............................................................................13

3.4 Settings ......................................................................................14

3.5 Sensor Calibration..............................................................................18

4 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

4.1 Alarm Tests ...................................................................................23

4.2 Test and Replace Back-up Batteries ................................................................25

4.3 Check Probe Bottle(s) ...........................................................................26

4.4 Display Board Battery ...........................................................................26

4.5 Upgrade System Firmware .......................................................................26

4.6 Clean the Freezer ..............................................................................26

5 Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

5.1 Refrigerant....................................................................................28

5.2 Remove/Replace Unit Cooler Cover ................................................................28

6 Troubleshooting.................................................................................... 30

6.1 Access System Problems ........................................................................30

6.2 Alarm Activation Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

6.3 Chamber Temperature Problems ..................................................................31

6.4 Condensation and Icing Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

7 i.Series Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

8 Schematics ........................................................................................35

8.1 iBF and iLF Models .............................................................................35

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Horizon Series Information.....................................................................37

9 InstallationandConguration ........................................................................37

9.1 Location Requirements ..........................................................................37

9.2 Placement and Leveling .........................................................................37

9.3 Connect Back-Up Power.........................................................................37

9.4 Defrost Events.................................................................................38

9.5 Prepare for Monitoring...........................................................................39

9.6 CongureStorage ..............................................................................41

10 Controls...........................................................................................43

10.1 Monitor and Control Interface .....................................................................43

10.2 Alarm Reference ...............................................................................45

10.3 Settings ......................................................................................46

11 Maintenance .......................................................................................49

11.1 Alarm Tests ...................................................................................50

11.2 Test and Replace Back-up Batteries ................................................................51

11.3 Check Probe Bottle .............................................................................52

11.4 Clean the Freezer ..............................................................................52

12 Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

12.1 Refrigerant....................................................................................53

12.2 Remove / Replace Unit Cooler Cover ...............................................................53

13 Troubleshooting.................................................................................... 55

13.1 Access System Problems ........................................................................55

13.2 Alarm Activation Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

13.3 Chamber Temperature Problems ..................................................................56

13.4 Condensation and Icing Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

14 Horizon Series Parts ................................................................................57

15.1 HBF and HLF Models ...........................................................................60

15.2 HBF and HLF Models (without Access Control) .......................................................61

15.3 HBF and HLF Models (with Access Control)..........................................................62

Appendix A: Warranty................................................................................... 63

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1 About This Manual

1.1 Intended Audience

This manual provides information on how to use i.Series®and Horizon Series™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, number of doors, and capacity of the

freezer. For example, “iLF125-GX” refers to an i.Series Laboratory Freezer with 1 door and a capacity of 25 cu ft, while

“HLF120-GX” refers to a Horizon Series Laboratory Freezer with 1 door and a capacity of 20 cu ft..

1.3 Intended Use

Note

This equipment has been tested and found to comply with the limits for a Class Adigital device, pursuant to part 15 of the

FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment

is operated in a commercial environment. This equipment generates, uses and can radiate radio frequency energy and, if

not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.

Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required

to correct the interference at his own expense.

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; person injury is unlikely.

Symbols and Labels found on the units

The following symbols may be found on the freezer or freezer packaging:

Warning: Consult manual for important

cautionary information Warning:Crushingofhands/ngers

Warning: Hot surface Danger: Risk of Fire or Explosion. Flammable

refrigerant used

Warning: Shock / electrical hazard Refer to documentation

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1.5 Avoiding Injury

• Do not use mechanical devices or other means to accelerate the defrosting process, other than those recommended by

the manufacturer.

• Do not damage the refrigerant circuit.

Review safety instructions before installing, using, or maintaining the equipment.

♦Before moving unit, ensure the door is closed and casters 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 products are stored at recommended temperatures determined by standards, literature, or good

laboratory practices.

♦Proceed with caution when adding and removing product from the freezer.

♦Do not open multiple loaded drawers at the same time.

♦Use only a manufacturer supplied power cord.

♦Avoid risk of ignition by using only manufacturer supplied components and authorized personnel when servicing

the unit.

♦ Usingtheequipmentinamannernotspeciedbythemanufacturermayimpairtheprotectionprovidedby

the equipment.

♦Ensure product is stored safely, in accordance with all applicable organizational, regulatory, and legal requirements.

♦ Thefreezerisnotconsideredtobeastoragecabinetforammableorhazardousmaterials.

REQUIRED: Decontaminate parts prior to sending for service or repair. Contact Helmer or your distributor for

decontamination instructions and a Return Authorization Number.

1.6 Model and Input Power

Note

Service information varies depending on the model and power requirements.

Table 1. Model and Input Power

Model Voltage Frequency Current Draw

120 115V 60 Hz 6.6A

220-240V 50/60 Hz 3.1A

125 115V 60 Hz 6.6A

220-240V 50/60 Hz 3.1A

* Amperage values are subject to change. Refer to the product specication label on your unit for current values.

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1.7 Product Labels

Thisinformationappearsontheproductspecicationlabel,locatedontherearofthefreezerbelowtheelectricalpanel.

The model also appears on a label located in the chamber on the upper right-side wall.

Note

Informationcontainedinthisspecicationlabelvariesdependingonthemodelandpowerrequirements.

Sample Product Specication label.

Label Description

A Model (REF)

B Serial number

C Power requirements

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i.Series Information

2 InstallationandConguration

2.1 Location Requirements

Keep all ventilation openings in the enclosure or, in the structure for building-in, clear of obstruction.

♦ Hasagroundedoutletmeetingtheelectricalrequirementslistedontheproductspecicationlabel.

♦Is clear of direct sunlight, high temperature sources, heating vents, and air conditioning vents.

♦Has a minimum of 8” (203 mm) above, and a minimum of 3” (76 mm) behind the unit for proper ventilation, clearance, and

feature access.

♦ MeetsspeciedlimitsforambienttemperatureandrelativehumidityasstatedintheProductSpecicationssectionof

the Instructions for Use manual.

2.2 Placement and Leveling

NOTICE

• To prevent tipping, ensure the casters are unlocked and the door is closed before moving the freezer.

• To avoid damaging refrigerant tubing or risking refrigerant leak, use caution when moving or operating the unit.

• Use of leveling legs or casters is required.

1. Ensure the door is secured and casters are unlocked.

2. Move the freezer into place. Lock the casters.

3. Ensure the freezer is level.

2.3 Connect Back-Up Power

The monitoring system and chart recorder each have a back-up battery system enabling a period of continuous operation if power

is lost.

Battery life varies by manufacturer, voltage level remaining as well as whether optional Access Control is installed. Providing the

battery switch is full power is available, Access Control is not installed, and no battery-related alarms are active, back-up power for

the monitoring system is available for up to 20 hours (the Low Battery alarm will activate after approximately 18 hours of battery use).

Providing full power is available, back-up power for the monitoring system and optional Access Control system is available for up to

2.5 hours.

Before installing or replacing batteries, switch AC power and back-up battery switches OFF. Disconnect the freezer from

AC power.

Notes

• The optional Access Control system uses the monitoring system back-up battery for back-up power in the event of

power failure.

• The monitoring system will start on back-up battery power alone. If the freezer was not previously connected to AC

power and the back-up battery is switched on, the monitoring system will begin running on back-up battery power.

• If AC power is lost, the monitoring system will automatically disable some features to prolong back-up battery power.

Data collection will continue until back-up battery power is depleted.

The monitoring system back-up battery is located on top of the freezer. Turn the back-up

battery switch ON to enable the back-up battery.

Monitoring system back-up battery.

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2.4 Prepare for Monitoring

The back-up battery switch is switched OFF for shipping. Switch the back-up battery switch ON to provide the monitoring

system and optional Access Control system with back-up power in the event of AC power failure.

Temperature Probes

Notes

• Temperature probes are fragile; handle with care.

• Failuretolltheprobebottleorkeeptheprobebottlelledtotheappropriatelevelmaycausethechamber

temperature to display higher or lower than the actual temperature.

• Remote probes may also be introduced through the existing port and immersed in the existing probe bottle.

• External probes should not be routed into the chamber through the door opening as this may cause issues with the

door seal.

• i.Series models are equipped with a primary and secondary monitor probe. The secondary monitor probe is located in

the lower left corner of the cabinet.

Probe bottle(s) and propylene glycol have been provided with this unit. The propylene glycol is mixed with water to create a

solution which, when placed in the probe bottle, simulates the product stored in the freezer. The product simulation solution

temperaturereectstheproduct’stemperatureduringnormaloperation.

The probe bottle should contain 4 oz. (120 mL) of product simulation solution (1:1 ratio of water to propylene glycol).

Probe bottle with probe. Top access port.

Fill Probe Bottle

1. Remove the probe(s) from the bottle and remove the bottle from the bracket.

2. Removethecapandllwith4oz.(120mL)ofproductsimulationsolution.

3. Replace and secure the cap and place the bottle in the bracket.

4. Replace the probe(s), immersing at least 2” (50 mm) in solution.

Install Additional Probe Through Top Port

1. Peel back putty to expose the port.

2. Insert the probe through the port into the chamber.

3. Insert the probe into the bottle.

4. Replace putty, ensuring a tight seal.

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Chart Recorder (if included)

Note

• If the chart recorder has been operating on battery power, the battery should be replaced to ensure the back-up source

has proper charge.

• For complete information, refer to the Temperature Chart Recorder Operation and Service Manual.

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. Providing full power is available, back-up power for the temperature chart

recorder is available for up to 14 hours.

Prior to use:

Route the chart recorder probe through the top access port and place in the bottle with the primary monitor probe.

Set up and Operation

Access the chart recorder by pressing and releasing the door.

Install Battery

Connect the leads to the battery to provide back-up power to the chart recorder.

Install / Replace Chart Paper

Notes

• For accurate temperature reading, ensure the current time is aligned with the time line groove when the chart knob is

fully tightened.

• Contact Helmer Customer Service or your distributor to reorder chart paper.

Chart recorder stylus and time line groove

1. Press and hold the Cbutton.Whenthestylusbeginstomoveleft,releasethebutton.TheLEDashes.

2. When the stylus stops moving, remove the chart knob then move the knob up and away.

3. Place chart paper on the chart recorder.

4. Gently lift the stylus and rotate the paper so the current time line corresponds to the time line groove.

5. Hold the 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 the C button. When the stylus begins to move right, release the button.

7. Conrmthestylusismarkingonthepaperandstopsatthecorrecttemperature.

8. Calibrate the chart recorder to match the primary temperature if needed and close the recorder door.

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External Monitoring Devices

The remote alarm interface is a relay switch with three terminals:

♦Common (COM)

♦Normally Open (NO)

♦Normally Closed (NC)

Terminals are dry contacts and do not supply voltage. The interface circuit is either normally open or normally closed, depending on

terminals used.

Requirements for your alarm system determine which alarm wires must connect to terminals.

• Theinterfaceontheremotealarmmonitoringsystemisintendedforconnectiontotheenduser’scentralalarm 

system(s) using normally-open or normally-closed dry contacts.

• Ifanexternalpowersupplyexceeding33V(RMS)or70V(DC)isconnectedtotheremotealarmmonitoringsystem’scircuit,

the remote alarm will not function properly and may cause damage to the control board or result in injury to the user.

The terminals on the remote alarm interface have the following maximum load capacity:

♦115V or 230V: 1 A at 33 V (AC) RMS or 30 V (DC)

Connect to Remote Alarm Interface

1. Locate the remote alarm terminals on the side of the electrical compartment.

2. Connect the remote alarm wires to the appropriate terminals, according to the requirements for your alarm system.

3. Use a cable tie to relieve strain on the alarm wires (as necessary).

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2.5 CongureStorage

Notes

• Before moving storage components, protect stored items in freezer from extended exposure to adverse temperature.

• Before moving drawers or shelves, ensure they are completely empty for safe lifting.

• Maximum drawer or shelf load is 100 lbs (46 kg).

Product Loading Guidelines

Note

Productsstackedagainstthebackwallmayobstructairowanda󰀨ectperformanceoftheunit.

When loading your freezer, take care to observe the following guidelines:

♦Never load the freezer beyond capacity.

♦Always store items within shelves or drawers.

♦ Temperatureuniformityismaintainedbyaircirculation,whichcouldbeimpedediftheunitisoverlled,particularlyat

the top or back. Ensure a minimum of 2” (50 mm) clearance is provided below the fan.

Drawers

Remove Drawer

1. Pull the drawer out until it stops.

2. Liftthefrontofthedrawero󰀨thefrontrollersontheslide.

3. With the front of the drawer slightly lifted, pull the drawer all the way forward. The rear drawer rollers should be touching

the front slide rollers.

4. Lift the drawer to free from the slides.

Install Drawer

1. Align the rear rollers on the drawer with the opening just behind the front slide rollers.

2. Place the rear drawer rollers on the slides and gently push the drawer into the chamber until it stops.

3. Pull the drawer out until it stops to check for smooth operation.

Move Drawer Slides

1. Using a screwdriver, remove the bracket retainers.

2. Tap the brackets upward to disengage from standards.

3. Remove the slides from the standards.

4. Insert the slides into the standard at the appropriate height.

5. Tap the brackets downward to engage with standards.

6. Using a screwdriver, install the bracket retainers.

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Shelves

Remove Shelf

1. With one hand, lift the front edge of the shelf from the front brackets.

2. With the other hand, reach under the shelf and bump the rear edge of the shelf upward to disengage rear brackets.

Install Shelf

1. Insert the shelf into chamber, placing it on the brackets.

2. Gently bump the rear edge of the shelf downward to engage with brackets.

3. Pulling the shelf forward gently; the shelf should not disengage from the rear brackets

Move Shelf Brackets

1. Using a screwdriver, remove the bracket retainers.

2. Tap the brackets upward to disengage from standards.

3. Remove the brackets from the standards.

4. Insert the brackets into the standard at the appropriate height.

5. Tap the brackets downward to engage with standards.

6. Using a screwdriver, install the bracket retainers.

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3 Controls

i.Series models are equipped with the i.C3monitoring and control system. The i.C3system combines temperature control and

monitoring into a single user interface.

Note

Please refer to the i.C3User Guide for complete information regarding the i.C3User Interface.

3.1 Home Screen and Screensaver

The Home Screen is the default screen and is displayed when:

♦The Home icon is touched from any other screen.

♦There is no interaction for two minutes on any screen other than those used to enter a password.

Home Screen Screensaver

3.2 Home Screen Functions

Note

Refer to the i.C³ User Guide for options available on all i.C³ screens.

♦View current interior cabinet temperature readings

♦View current system time and date

♦ Accessanyofthevehomescreenapplications(touchi.C³ APPS for additional applications)

♦View information about current alarm events

♦View whether the monitoring system is running on battery power

♦Mute audible alarms

♦View a graph of the chamber temperature

♦View unit ID

♦Shortcut to Event Log

3.3 Alarm Reference

If an alarm condition is met, an alarm activates. Some alarms are visual only; others are visual and audible. Some alarms are sent

through the remote alarm interface. The table below indicates if an alarm is audible (A), visual (V), or sent through the remote

alarm interface (R).

Table 2. i.Series Alarm Reference

Alarm Alarm Type Alarm Alarm Type

High Temperature A, V, R Low Battery V

Low Temperature A, V, R No Battery A, V, R

Compressor Temperature A, V, R Probe Failure A, V, R

Door Open (Time) A, V, R Communication Failure A, V, R

Power Failure A, V, R

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3.4 Settings

Through the i.C³ monitoring and control system, current settings may be viewed and changed. To view settings, touch i.C³ APPS,

Settings. Use a touch-drag motion to scroll up or down to select the desired setting.

Settings screens

Notes

•IftheSettingsscreenispasswordprotected,entertheappropriatepassword.Ifviewingsettingsforthersttime,enterthe

factory default password of “1234”.

• Default values for general settings, alarm settings, and display settings are available in the i.C³ User Guide.

•Changingtemperaturesettingsa󰀨ectsoperationofthefreezer.Donotchangesettingsunlessinstructedin

product documentation or by Helmer Technical Service.

Thei.C³temperaturemonitorandcontrollerisprogrammedatthefactory.Tochangeasetting,rstentertheSettingsscreen,then

select the setting. The method for accessing the Settings mode for each setting varies.

Device Control Settings

Device control settings are programmed at the factory. Setpoints can be viewed and changed through the i.C³ monitoring and control

system. To view temperature setpoints, touch i.C³ APPS, Settings, Device Control Settings.

Device Control Settings screen.

Table 3. Setpoints

Setting Initial Factory Value

Temperature Setpoint -30.0 °C

Upper Rail 0.7 °C

Lower Rail -0.7 °C

Delay on Start-Up 2 minutes

Speed During Probe Error 50%

Note

For locations outside the U.S.and Canada, the default Temperature Setpoint for plasma freezers is -35.0 °C.

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Temperature Setpoint

The setpoint is the temperature at which the freezer operates. The factory default setting for the primary monitor probe

is -30.0°C. For locations outside the U.S.and Canada, the factory default setting for plasma freezers is -35.0 °C.

Notes

•IftheSettingsscreenispasswordprotectedentertheappropriatepassword.Ifviewingsettingsforthersttime,enter

the factory default password of “1234”.

• Temperature Setpoint can be adjusted through the main Settings screen and Device Control Settings screen.

• Change the setpoint if your organization requires a chamber temperature other than the factory default.

Change Temperature Setpoint

1. Touch i.C³ APPS, Settings.

2. Enter the Settings password.

3. Touch the minus (–) or plus (+) on the Temperature Setpoint spin box to select the desired value.

Upper Rail

Upper rail is the maximum control temperature at which the compressor will turn on.

Lower Rail

Lowerrailistheminimumcontroltemperatureatwhichthecompressorwillturno󰀨.

Delay on Start-Up

Compressorstartupisdelayedtoallowthei.C³monitoringandcontrolsystemtostartrst.

Speed During Probe Error

The compressor will run as a percent of maximum if both the monitor and control probe fail.

NOTICE

Upper Rail, Lower Rail, Delay on Start-up and Speed During Probe Error are factory-preset and should not be changed

unless directed by Helmer Technical Service.

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Defrost Time

Notes

• Depending on the high temperature alarm setpoint and the actual temperature increase during the defrost cycle,

frequent door openings may trigger repeated high temperature alarms.

• There must be a minimum of four hours between defrost cycles.

Defrosteventsmaybescheduledtooccuratspecictimes.Adefrosteventcanbetriggeredondemandwithouta󰀨ectinga

programmed defrosting schedule. The number of programmed defrost events is dependent on environmental conditions and the

frequency of usage. The recommended number of daily defrost cycles is three to four, at even intervals. Defrost events should take

place when the freezer door is likely to remain closed or opened infrequently.

The i.C³ monitoring and control system can perform a maximum of four defrost cycles per day.

Schedule or Start a Defrost Event

1. Touch i.C³ APPS, Defrost Settings.

2. Toggle the ON/OFF button to schedule the defrost event(s), or

Toggle the Start/Stop button. The Defrost icon will appear for the duration of the defrost cycle.

3. Touch the corresponding Time spin box to set the starting time for each defrost event selected.

Table 4. Default Defrost Cycles

Defrost Event On/O󰀨 Default Time

1 On 12:15 AM

2 On 8:00 AM

3 On 4:00 PM

4O󰀨 6:00 PM

UserCongurableAlarmSettings

The following alarm settings may be changed by the operator. The setpoint for temperature alarms may be changed (where

applicable), as well as the time delay between when the alarm condition commences and when the visual and audible alarms

are initiated.

Table5.UserCongurableAlarms

Alarm Description Default Value Default Time Delay

Primary Monitor Probe High Temp High temperature at which alarm condition occurs -20°C -25°C* 0 minutes

Primary Monitor Probe Low Temp Low temperature at which alarm condition occurs -35°C -40°C* 0 minutes

Compressor High Temp High temperature at which alarm condition occurs 50 °C 0 minutes

Power Failure Time after power failure occurs until alarm sounds - 1 minute

Probe Failure Time after probe failure occurs until alarm sounds - 0 minutes

Door Open (Time) Time door remains open until alarm sounds - 3 minutes

* Factory default value for plasma freezers for locations outside the U.S.and Canada.

Alarm setting screens

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Change an Alarm Setting

1. Touch i.C³ APPS, Settings.

2. Enter the Settings password (default password is “1234”).

3. Scroll down and touch Alarm Settings.

4. Touch the minus (–) or plus (+) on the spin box corresponding to the alarm setting to be changed.

5. Touch the minus (–) or plus (+) on the corresponding Time Delay spin box to change the time delay duration.

6. Touch Home to exit the Alarm Settings screen.

Non-CongurableAlarms

Thefollowingalarmsindicateoperationalconditionswhichrequiretheattentionoftheoperatororaqualiedservicetechnician.

Table6.Non-CongurableAlarm

Alarm Description

Low Battery Monitoring system rechargeable battery voltage is low

Drive Space Low • Triggered if SD card containing downloadable historical date is approaching capacity

• New data will continue to be saved for up to 3 more months

• Data can be downloaded, but doing so will not free up capacity (SD card replacement recommended)

Drive Space Full • Triggered if the SD card containing downloadable historical data has reached its capacity

• No new data will be saved

• Data can be downloaded, but doing so will not free up capacity (SD card replacement required)

Communication Failure Communication Failure 1

• Triggered if communication is lost between i.C³ display board and control board.

• Unit will continue to run with previously saved settings

• Screen will not display temperature changes or alarm conditions

• i.C³ system will continue to reset until connection is re-established

Communication Failure 2

• Triggered if communication is lost between i.C³ display board and internal system memory

• Unit will continue to run with previously saved settings

Communication Failure 3

• Triggered if the database is corrupted

• The database is archived and a new database is automatically created

• Unit will continue to run with previously saved settings

Inverter Communication Failure • Triggered if there is a problem with the refrigeration system

Contact Helmer Technical Service for more information

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3.5 Sensor Calibration

Sensor calibration values are programmed at the factory. Calibration values can be viewed and changed through the i.C³

monitoring and control system. To view calibration settings, touch i.C³ APPS, Settings, and select Sensor Calibration.

Settings Screen

Sensor Calibration screens

Notes

• IftheSettingsscreenispasswordprotectedentertheappropriatepassword.Ifviewingsettingsforthersttime,enterthe

factory default password of “1234”.

• O󰀨setvaluesareadjustedtothetenthofadegree(0.1).

• After one hour of no interaction, the Home screen or Temperature Graph screensaver (if enabled) is displayed.

• TheCompressorProbeo󰀨setandEvaporatorDefrostProbeo󰀨setarefactory-presetandshouldnotbechangedunless

directed by Helmer Technical Service.

View Sensor Calibration Values

1. Touch the Settings icon.

2. Enter the Settings password.

3. Touch Sensor Calibration.Thesensoro󰀨setvaluesandtheircurrenttemperaturereadingsaredisplayed.

4. Touch Home to return to the Home screen.

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Primary Monitor Probe

Verify the primary monitor probe is reading the chamber temperature correctly by comparing the probe reading to the temperature

measured by a calibrated reference thermometer. If the probe is not reading correctly, change the value displayed on the monitor.

The factory default setting for the primary monitor probe is -30.0°C. For locations outside the U.S and Canada, the factory default

setting for plasma freezers is -35.0 °C.

Notes

• Ensure the product simulation bottle is full of solution.

• The probe in the bottle is connected to the monitoring system and senses chamber temperature. This probe

 activatesthetemperaturealarmsbutdoesnota󰀨ecttemperaturecontrol.

Calibrate Primary Monitor Probe

1. Remove the primary monitor probe from the probe bottle.

2. Unscrew the cap from the bottle.

3. Attach a calibrated independent reference thermometer traceable per national standards to the primary monitor probe,

and place them in the bottle. The probe and thermometer should be immersed at least 2” (50 mm).

4. Close the door and allow the chamber temperature to stabilize.

5. Observe and note the thermometer temperature. If the independent thermometer corresponds to the displayed

temperature, proceed to Step 11.

6. Subtractthedisplayedtemperaturereadingfromtheindependentprobereadingtodeterminetheo󰀨setvalue.

7. Enter the Settings password (default password is “1234”).

8. Touch, i.C³ APPS, Settings.

9. Touch Sensor Calibration.

10. Touch the minus (–) or plus (+) on the corresponding spin box to increase or decrease the value by the value

calculated in Step 6. The message “New Setting Saved” appears next to the spin box.

11. Remove the thermometer from probe.

12. Replaceandsecurethebottlecap,ensuringatightt.

13. Place the probe in the bottle, immersing at least 2” (50 mm).

Control Probe

The temperature controller senses unit cooler temperature through the control probe in the unit cooler. The unit cooler temperature

typicallyvariesfromthechambertemperature,soano󰀨setvalueisusedbythecontrolsystemtocompensateforthedi󰀨erence.

Chamber temperature will be controlled as required to match the temperature set point based on the control probe reading.

DetermineControlProbeO󰀨set

NOTICE

• ControlProbeO󰀨setisfactory-presetandshouldnotbechanged.ContactHelmerTechnicalServiceforinstructions

 regardingchangingtheControlSensorO󰀨set.

• MonitortemperaturemustbeveriedandaccuratepriortoadjustingtheControlSensorO󰀨set.

1. View and record the Freezer Setpoint.

2. Allow the unit to run with a calibrated monitor temperature for several compressor cycles, and record the average

monitor temperature.

3. ViewandrecordthecurrentControlO󰀨setvalue.

4. SubtracttheFreezerSetpointfromtheaveragemonitortemperatureandrecordthedi󰀨erence.

5. AddthecurrentControlO󰀨setvaluetotherecordeddi󰀨erencedeterminedintheprevioussteptoestablishthenew

 ControlO󰀨setvalue.

Example 1 Example 2

Freezer setpoint is -30.0 Freezer setpoint is -30.0

Average monitor temperature is -29.2 Average monitor temperature is -31.2

CurrentControlO󰀨setis0.3 CurrentControlO󰀨setis0.3

Subtract: -29.2 - (-30.0) = 0.8 (di󰀨erencebetweenaveragetemperatureandsetpoint) Subtract: -31.2 - (-30.0) = -1.2 (di󰀨erencebetweenaveragetemperatureandsetpoint)