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Undercounter Freezer Service Manual
i.Series® and Horizon Series™
HELMER SCIENTIFIC
14400 Bergen Boulevard
Noblesville, IN 46060 USA
PH +1.317.773.9073
FAX +1.317.773.9082
USA and Canada 800.743.5637
360142-D/D
Model Group i.Series Horizon Series
Plasma Storage iPF105 (Version D) HPF105 (Version D)
Laboratory iLF105 (Version D) HLF105 (Version D)
0086
ISO 13485:2003 CERTIFIED
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Document History
Revision Date CO Supersession Revision Description
A 11 DEC 2012 8187 n/a Initial release.
B 04 DEC 2013 8953 B supersedes A
C 27 JAN 2014* 9083 C supersedes B Corrected electrical schematics for i.Series and Horizon Series.
D 16 MAR 2015 10319 D supersedes C
* 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 Scientic. Helmer Scientic assumes no responsibility or liability for any errors or inaccuracies that
may appear in the informational content contained in this material. For the purpose of clarity, Helmer Scientic considers
only the most recent revision of this document to be valid.
► Removed all references to mechanical Access Control.
► Added references to magnetic Access Control.
► Updated instruction in Section III, Items 13.1 through 13.6.3
to reect use of monitor and control interface with new Min/
Max temperature recording feature.
► Added Document Updates, to Document History page.
► Added Condential / Proprietary Notice, Section I, Item 1.4
and Disclaimer, Section I, Item 1.5.
360142-D/D i
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Contents
Section I: General Information ........................................6
1 About this Manual .......................................................... 6
1.1 Intended Audience. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2 Model References ......................................................................6
1.3 Copyright and Trademark ................................................................6
1.4 Condential / Proprietary Notices ..........................................................6
1.5 Disclaimer ............................................................................6
2 Safety .................................................................... 7
2.1 Labels ...............................................................................7
2.2 Avoiding Injury .........................................................................7
3 Conguration .............................................................. 7
3.1 Model and Input Power ..................................................................7
3.2 Control System ........................................................................8
3.2.1 i.C³® Control System ..............................................................8
3.2.2 Horizon Series™ Control System ....................................................8
3.3 Temperature Probes ....................................................................8
3.3.1 Fill Temperature Probe Bottle .......................................................9
3.3.2 Install Additional Probe Through Rear Port ............................................9
3.4 Chart Recorder ........................................................................9
3.4.1 Chart Recorder Access ...........................................................9
3.4.2 Install Chart Paper ..............................................................10
4 References and Compliance ................................................. 11
4.1 Alarm Reference ......................................................................11
4.2 Regulatory Compliance .................................................................11
4.3 WEEE Compliance ....................................................................11
5 Warranty ................................................................. 12
5.1 Rel.i™ Product Warranty USA and Canada .................................................12
5.1.1 Rapid Resolution ...............................................................12
5.1.2 Compressor ...................................................................12
5.1.3 Parts .........................................................................12
5.1.4 Labor ........................................................................12
5.1.5 Additional Warranty Information ....................................................12
5.2 Outside of USA and Canada .............................................................13
Section II: i.Series® Models ..........................................14
6 ProductConguration ...................................................... 14
6.1 Install Battery for Backup Power ..........................................................14
6.2 Automatic Defrost Cycle ................................................................15
6.3 External Monitoring Devices .............................................................15
6.3.1 Connect to Remote Alarm Interface .................................................15
6.4 Move Drawers, Shelves, and Baskets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.5 Move Slides and Brackets ...............................................................16
6.6 Level the Freezer .....................................................................17
6.7 Optional Adapter Kits for Medication Dispensing Locks ........................................17
6.8 Reverse Door Hinge and Handle .........................................................17
360142-D/D ii
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6.8.1 Remove the Door and Hinges .....................................................17
6.8.2 Reverse the Cable Routing in the Door ..............................................20
6.8.3 Reinstall the Door and Hinges .....................................................22
6.9 Stacked Undercounter Units .............................................................25
7 Settings .................................................................. 26
7.1 Home Screen ........................................................................26
7.1.1 Home Screen Functions ..........................................................26
7.2 Temperature Settings ..................................................................27
7.3 Temperature Calibration ................................................................28
7.3.1 Calibrate Monitor Probe ..........................................................28
7.3.2 Control Sensor Offset ............................................................29
7.3.3 Calibrate Compressor and Evaporator Probe .........................................30
7.3.4 Factory Default Settings ..........................................................30
7.3.5 Restore Factory Default Settings ...................................................31
7.3.6 Change Factory Settings .........................................................31
7.4 Test Alarms ..........................................................................32
7.4.1 Automatic Chamber Temperature Alarm Test ..........................................32
7.4.2 Manual Chamber Alarm Test ......................................................33
7.4.3 Power Failure Alarm Test .........................................................33
7.4.4 Door Open Alarm Test ...........................................................33
7.5 Upgrade System Firmware ..............................................................34
7.6 Calibrate the Touchscreen ...............................................................34
7.7 View Manufacturer and Product Information .................................................34
8 Maintenance .............................................................. 35
8.1 Recharge Refrigerant ..................................................................35
8.2 Check Optional Access Control System Battery ..............................................35
8.3 Check Monitoring System Battery .........................................................36
8.4 Clean the Freezer .....................................................................36
8.4.1 Condenser Grill ................................................................36
8.4.2 Exterior .......................................................................36
8.4.3 Interior .......................................................................36
8.4.4 Door Gaskets ..................................................................36
8.4.5 Clean and Rell Probe Bottle ......................................................36
8.4.6 i.C³® Touchscreen ...............................................................37
8.5 Defrost the Unit Cooler .................................................................37
8.6 Unit Cooler Cover Removal and Installation .................................................37
8.6.1 Remove the Unit Cooler Cover ....................................................38
8.6.2 Install the Unit Cooler Cover ......................................................38
9 Troubleshooting ........................................................... 39
9.1 General Operation Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
9.2 Chamber Temperature Problems .........................................................40
9.3 Alarm Activation Problems ..............................................................41
9.4 Testing Problems ......................................................................45
9.5 Condensation and Icing Problems ........................................................45
10 Parts .................................................................... 47
10.1 Front ...............................................................................47
10.1.1 Control System Display ..........................................................47
10.1.2 Control and Monitoring ...........................................................48
10.1.3 Lower Panel ...................................................................48
10.1.4 Access Control Option ...........................................................49
360142-D/D iii
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10.2 Rear ................................................................................49
10.3 Electrical Tray ........................................................................50
10.3.1 Electrical Tray Components .......................................................51
10.4 Interior ..............................................................................52
10.4.1 Unit Cooler ....................................................................53
10.5 Side Access Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
10.6 Door and Hinge .......................................................................54
11 Schematics ...............................................................55
11.1 iPF and iLF Models; 105 Conguration .....................................................55
Section III: Horizon Series™ Models ..................................57
12ProductConguration ...................................................... 57
12.1 Install Battery for Backup Power ..........................................................57
12.2 Schedule Defrost Events ................................................................58
12.2.1 Set Current Time ...............................................................59
12.2.2 Set Defrost Time ................................................................59
12.2.3 Schedule a Defrost Event .........................................................59
12.3 External Monitoring Devices .............................................................60
12.3.1 Connect to Remote Alarm Interface .................................................60
12.4 Move Drawers, Shelves, and Baskets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
12.5 Move slides and brackets ...............................................................61
12.6 Level the Freezer .....................................................................61
12.7 Optional Adapter Kits for Medication Dispensing Locks ........................................61
12.8 Reverse Door Hinge and Handle .........................................................62
12.8.1 Remove the Door and Hinges .....................................................62
12.8.2 Reverse the Cable Routing in the Door ..............................................64
12.8.3 Reinstall the Door and Hinges .....................................................66
12.9 Stacked Undercounter Units .............................................................69
13Settings .................................................................. 70
13.1 Monitor and Controller Interface ..........................................................70
13.2 Display Minimum and Maximum Monitor Temperature Recordings ...............................71
13.3 Freezer Setpoint ......................................................................72
13.4 Table of Parameters ...................................................................72
13.4.1 View Alarm Setpoints and Offset Values .............................................72
13.4.2 Temperature Units ..............................................................72
13.5 Temperature Alarm Setpoints ............................................................73
13.5.1 High Temperature Alarm Setpoint ..................................................73
13.5.2 Low Temperature Alarm Setpoint ...................................................73
13.6 Temperature Calibration Setpoints ........................................................73
13.6.1 Monitor Offset ..................................................................73
13.6.2 Control Sensor Offset ............................................................74
13.6.3 Hysteresis .....................................................................74
13.7 Test Alarms ..........................................................................75
13.7.1 Chamber Temperature Alarm ......................................................75
13.7.2 Power Failure Alarm .............................................................75
13.7.3 Door Open Alarm ...............................................................75
14 Maintenance .............................................................. 76
14.1 Recharge Refrigerant ..................................................................76
14.2 Check Monitoring System Battery .........................................................76
360142-D/D iv
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14.3 Check Optional Access Control System Battery ..............................................77
14.4 Clean the Freezer .....................................................................77
14.4.1 Condenser Grill ................................................................77
14.4.2 Exterior .......................................................................77
14.4.3 Interior .......................................................................77
14.5 Unit Cooler Cover Removal and Installation .................................................78
14.5.1 Remove the Unit Cooler Cover ....................................................78
14.5.2 Install the Unit Cooler Cover ......................................................79
15Troubleshooting ........................................................... 80
15.1 General Operation Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
15.2 Chamber Temperature Problems .........................................................81
15.3 Alarm Activation Problems ..............................................................83
15.4 Condensation and Icing Problems ........................................................85
16 Parts .................................................................... 86
16.1 Front ...............................................................................86
16.1.1 Control System Display ..........................................................86
16.1.2 Control and Monitoring ...........................................................87
16.1.3 Lower Panel ...................................................................87
16.1.4 Access Control Option ...........................................................88
16.2 Rear ................................................................................88
16.3 Electrical Tray ........................................................................89
16.3.1 Electrical Tray Components .......................................................90
16.4 Interior ..............................................................................91
16.5 Door and Hinge .......................................................................93
17 Schematics ............................................................... 95
17.1 HPF and HLF Models; 105 Conguration (Without Access Control) ...............................95
17.1 HPF and HLF Models; 105 Conguration (With Access Control) .................................96
360142-D/D v
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Section I: General Information
1 About this Manual
1.1 Intended Audience
This manual is intended for use by end users of the freezer and authorized service technicians.
1.2 Model References
Generic references are used throughout this manual to group models that contain similar features. For
example, “105 models” refers to all models of that size (iPF105, HPF105, iLF105, HLF105). This manual
covers all undercounter freezers, which may be identied singly, by their size, or by their respective
“Series.”
1.3 CopyrightandTrademark
Helmer®, i.Series®, i.C³®, Horizon Series™, and Rel.i™ are registered trademarks or trademarks of
Helmer, Inc. in the United States of America. Copyright © 2015 Helmer, Inc. All other trademarks and
registered trademarks are the property of their respective owners.
Helmer, Inc., doing business as (DBA) Helmer Scientic and Helmer.
1.4 Condential/ProprietaryNotices
General Information
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 Scientic products is expressly
prohibited.
1.5 Disclaimer
This manual is intended as a guide to provide the operator with necessary instructions on the proper use
and maintenance of certain Helmer Scientic products.
Any failure to follow the instructions as described could result in impaired product function, injury to the
operator or others, or void applicable product warranties. Helmer Scientic accepts no responsibility for
liability resulting from improper use or maintenance of its products.
The screenshots and component images appearing in this guide are provided for illustrative purposes
only, and may vary slightly from the actual software screens and/or product components.
360142-D/D 6
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2 Safety
!
Includes general safety information for freezer operation.
2.1 Labels
General Information
Caution: Risk of damage
to equipment or danger to
operator
Caution: Hot surface Earth / ground terminal
Caution: Shock/electrical
hazard
2.2 AvoidingInjury
► Review safety instructions before installing, using, or maintaining the equipment.
► Do not open multiple, loaded drawers or baskets at the same time.
► Before moving unit, ensure casters are unlocked and free of debris.
► Never physically restrict any moving component.
► Avoid removing electrical service panels and access panels unless so instructed.
► Use manufacturer supplied power cords only.
CAUTION Decontaminate parts prior to sending for service or repair. Contact Helmer or your
Caution: Unlock all casters
Protective earth / ground
terminal
distributor for decontamination instructions and a Return Authorization Number.
3 Conguration
3.1 Model and Input Power
NOTE Service information varies depending on the model and power requirements.
This information appears on the product specication label, located on the rear of the freezer. The model
also appears on a label located in the chamber on the upper side of the right wall.
REF
ILF105
SN
2000000
Version D
www.helmerinc.com
Left: Chamber label. Right: Product Specication label (located on the rear at lower left).
Label Description
A Model (REF)
B Serial number (SN)
C Version
D Power requirements
REF
A
SN
B
Version D
C
Laboratory Freezer
Weight 197 lb / 89 kg
UL 61010-1/CSA 61010-1
ILF105
i.Series®
2000000
CUS
Certified
14400 Bergen Boulevard
2012
0086
Noblesville, IN USA
www.helmerinc.com
Voltage 115 V
HZ 60
Amps 5.75 A
Power 0.64 kW
Refrigerant Type: 404A
Made in USA
D
360142-D/D 7
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3.2 Control System
NOTE Service information varies depending on the control system.
Helmer freezers have one of two control systems installed. The type of control system varies by model.
3.2.1 i.C³® Control System
i.Series freezers are equipped with the i.C³ monitoring and control system. The i.C³ system combines
temperature control and monitoring into a single interface.
3.2.2 Horizon Series™ Control System
Horizon Series freezers feature the Horizon combined monitor and temperature controller. The Horizon
Series system controls chamber temperature and monitors and displays operational information.
General Information
3.3 Temperature Probes
Number and location of probes varies by model. External probes may be introduced through existing rear
port and immersed in existing probe bottle.
For each probe bottle, use:
► 4 oz. (120 mL) of product simulation solution (1:1 ratio of water to propylene glycol or equivalent low-
temperature uid).
Left: Probe bottle with temperature probe. Right: Access port on rear of freezer.
360142-D/D 8
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3.3.1 Fill Temperature Probe Bottle
NOTE Temperature probes are fragile; handle with care.
1 Remove all probes from bottle and remove bottle from bracket.
2 Remove cap and ll with 4 oz (120 mL) of product simulation solution.
3 Install cap and place bottle in bracket.
4 Replace probes, immersing at least 2” (50 mm) in solution.
3.3.2 InstallAdditionalProbeThroughRearPort
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.
3.4 Chart Recorder
If installed, refer to the Temperature Chart Recorder Operation and Service Manual on CD.
The chart recorder has a 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,
backup power for the temperature chart recorder is available for up to 14 hours.
Prior to use:
► Install battery.
► Add paper.
► Calibrate chart recorder to match chamber temperature.
General Information
3.4.1 Chart Recorder Access
Open door by pulling door open.
360142-D/D 9
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3.4.2 Install Chart Paper
1 Press and hold C button. When stylus begins to move left, release button. The LED ashes to
indicate current temperature range.
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 and reinstall chart knob.
NOTE For accurate temperature reading, ensure that current time is aligned with time line
groove when chart knob is tightened.
6 Conrm temperature range is set to the correct value.
7 Press and hold C button. When stylus begins to move right, release button.
8 Conrm stylus is marking temperature correctly.
General Information
360142-D/D 10
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4 References and Compliance
4.1 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 indicates if an alarm is audible (A), visual (V), or sent through the remote alarm interface (R).
Alarm Alarm Type
High Temperature A, V, R
Low Temperature A, V, R
Compressor Temperature A, V, R (i.Series)
Door Open (Time) A, V, R
Power Failure A, V, R
Low Battery V (i.Series)
No Battery A, V, R (i.Series)
Probe Failure A, V, R
Communication Failure A, V, R (i.Series)
4.2 RegulatoryCompliance
This device complies with the requirements of directive 93/42/EEC concerning
Medical Devices, as amended by 2007/47/EC.
Sound level is less than 70 dB(A).
General Information
0086
EC REP
Emergo Europe
Molenstraat 15
2513 BH
The Hague, Netherlands
4.3 WEEE Compliance
The WEEE (waste electrical and electronic equipment) symbol (right) indicates
compliance with European Union Directive WEEE 2002/96/EC and
applicable provisions. The directive sets requirements for labeling and
disposal of certain products in affected countries.
When disposing of this product in countries affected by this directive:
► Do not dispose of this product as unsorted municipal waste.
► Collect this product separately.
► Use collection and return systems available locally.
For more information on the return, recovery, or recycling of this product, contact your local distributor.
360142-D/D 11
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5 Warranty
5.1 Rel.i™ Product Warranty USA and Canada
For technical service needs, please contact Helmer at 800-743-5637 or www.helmerinc.com. Have the
model and serial number available when calling.
5.1.1 Rapid Resolution
When a warranty issue arises it is our desire to respond quickly and appropriately. The service department
at Helmer is there for you. Helmer will oversee the handling of your warranty service from start to nish.
Therefore, Helmer must give advance authorization for all service calls and/or parts needs relating to a
warranty issue. Any repeat service calls must also be authorized as well. This allows for proper diagnosis
and action. Helmer will not be responsible for charges incurred for service calls made by third parties prior
to authorization from Helmer. Helmer retains the right to replace any product in lieu of servicing it in the eld.
5.1.2 Compressor
For the warranty period listed below, Helmer will supply the refrigeration compressor, if it is determined
to be defective, at no charge, including freight. Helmer will not be liable for installation, refrigerant, or
miscellaneous charges required to install the compressor beyond the rst year of the warranty period.
► i.Series model compressor warranty period is ve (5) years.
► Horizon Series model compressor warranty period is three (3) years.
General Information
5.1.3 Parts
For a period of two (2) years, Helmer will supply at no charge, including freight, any part that fails
due to defects in material or workmanship under normal use, with the exception of expendable items.
Expendable items such as glass, lters, light bulbs, and door gaskets are excluded from this warranty
coverage. Inspection of defective parts by Helmer will be nal in determining warranty status. Warranty
procedures must be followed in all events.
5.1.4 Labor
For a period of one (1) year, Helmer will cover repair labor costs (including travel) and the cost of
refrigerant and supplies necessary to perform authorized repairs. Repair service must be performed by
an authorized Helmer service agency following the authorization process detailed above. Alternatively,
your facility’s staff may work with a Helmer technician to make repairs. Labor costs for repairs made by
unauthorized service personnel, or without the assistance of a Helmer technician, will be the responsibility
of the end user.
5.1.5 Additional Warranty Information
The time periods set forth above begin two (2) weeks after the original date of shipment from Helmer.
Warranty procedures set forth above must be followed in all events.
THERE ARE NO WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTION ON THE FACE
HEREOF. THIS WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES, EXPRESS
OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY WARRANTY OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE. NO WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR PARTICULAR PURPOSE SHALL APPLY.
THE LIABILITY, IF ANY, OF HELMER FOR DIRECT DAMAGES WHETHER ARISING FROM A
BREACH OF ANY SALES AGREEMENT, BREACH OF WARRANTY, NEGLIGENCE, OR INDEMNITY,
STRICT LIABILITY OR OTHER TORT, OR OTHERWISE WITH RESPECT TO THE GOODS OR ANY
360142-D/D 12
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SERVICES IS LIMITED TO AN AMOUNT NOT TO EXCEED THE PRICE OF THE PARTICULAR GOODS
OR SERVICES GIVING RISE TO THE LIABILITY. IN NO EVENT SHALL HELMER BE LIABLE FOR
ANY INDIRECT, INCIDENTAL, CONSEQUENTIAL, OR SPECIAL DAMAGES, INCLUDING WITHOUT
LIMITATION DAMAGES RELATED TO LOST REVENUES OR PROFITS, OR LOSS OF PRODUCTS.
This warranty does not cover damages caused in transit, during installation by accident, misuse, re, ood, or
acts of God. Further, this warranty will not be valid if Helmer determines that the failure was caused by a lack
of performing recommended equipment maintenance (per Helmer manual) or by using the product in a manner
other than for its intended use. Installation and calibration are not covered under this warranty agreement.
5.2 Outside of USA and Canada
Consult your local distributor for warranty information.
General Information
360142-D/D 13
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Section II: i.Series® Models
!
6 ProductConguration
WARNING To prevent tipping:
► ensure the casters (if installed) are unlocked and the door is closed before moving
the freezer.
► do not sit, lean, push or place heavy objects on upper door ledge.
6.1 InstallBatteryforBackupPower
The monitoring system and chart recorder each have a battery system, enabling a period of continuous
operation if power is lost.
NOTE ► The optional Access Control system uses the monitoring system battery for backup
power, in the event of a power failure.
► The monitoring system will start on battery power alone. If the freezer was previously
not connected to AC power and the battery is switched on, the monitoring system will
begin running on battery power.
Battery life varies by manufacturer as well as voltage level remaining. Providing full power is available
and no battery-related alarms are active, backup 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, backup power for the optional Access Control system is available for up to 2.5 hours.
i.Series® Models
CAUTION ► Before installing or replacing batteries, switch the power and battery OFF.
Disconnect the freezer from AC power.
► When installing a replacement battery, use only a battery which meets the
manufacturer’s specications.
NOTE If AC power is lost, the monitoring system will automatically disable some features to
prolong battery power. Data collection will continue until battery power is depleted.
The battery is located below the chamber, behind the front cover. A cover panel must be removed to
access the backup battery.
Monitoring system backup battery (supplies power to optional Access Control system).
Battery is switched off for shipping. Switch battery on to provide monitoring system with backup power in
the event of AC power failure.
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6.2 Automatic Defrost Cycle
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 opened infrequently.
NOTE 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.
The i.C³ monitoring and control system can perform a maximum of four defrost cycles per day. For
information in setting the system time and the time at which each defrost cycle occurs, refer to the i.C³
User Guide.
Defrost Event On/Off Default Time
1 On 12:00 AM
2 On 8:00 AM
3 On 4:00 PM
4 Off 6:00 PM
NOTE There must be a minimum of four hours between defrost cycles.
i.Series® Models
6.3 ExternalMonitoringDevices
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. 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.
NOTE Do not connect any monitoring device that exceeds the maximum load capacity.
The terminals on the remote alarm interface have the following maximum load capacity:
► 0.5 A at 125 V (AC): 1 A at 250 V (DC)
6.3.1 Connect to Remote Alarm Interface
1 Switch AC ON/OFF switch OFF. Switch battery switch OFF.
2 On back of freezer, locate the remote alarm terminals.
3 Connect remote alarm wires to appropriate terminals, according to requirements for your alarm
system.
4 Use a cable tie to relieve strain on alarm wires (as necessary).
5 Switch battery switch ON. Switch AC ON/OFF switch ON.
6 Touch Mute to disable the high temperature alarm while freezer reaches operating temperature.
360142-D/D 15
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6.4 MoveDrawers,Shelves,andBaskets
!
Storage features.
CAUTION ► Before moving drawers, ensure they are completely empty for safe lifting.
► Maximum basket, drawer, or shelf load is 100 lbs (46 kg).
NOTE Before moving storage components, protect stored items in freezer from extended
exposure to adverse temperature.
Removeadrawerorbasket
1 Pull drawer or basket out until it stops.
2 Tilt the front of the drawer or basket upward.
3 Pull drawer or basket free of the slides.
Installadrawerorbasket
1 Align end guides on drawer or basket with the slides.
2 Gently push drawer or basket into chamber until it stops.
3 Pull drawer or basket out until it stops; check for smooth operation.
i.Series® Models
Remove a shelf
1 With one hand, lift front edge of the shelf from the front brackets.
2 With the other hand, reach under the shelf and bump rear edge of the shelf upward to disengage rear
brackets.
Install a shelf
1 Insert shelf into chamber, placing it on brackets.
2 Gently bump rear edge of the shelf downward to engage brackets.
3 Pulling shelf forward gently; shelf should not disengage from rear brackets.
6.5 MoveSlidesandBrackets
Remove drawer slides
1 Using a screwdriver, remove front bracket retainers.
2 Tap front brackets upward to disengage standards.
3 Remove slides from standards.
Install drawer slides
1 Insert slides into standard at appropriate height.
2 Tap front brackets downward to engage standards.
3 Using a screwdriver, install front bracket retainers.
Removeshelfbrackets
1 Using a screwdriver, remove front bracket retainers.
2 Tap front brackets upward to disengage standards.
3 Remove front brackets from standards.
360142-D/D 16
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Installshelfbrackets
1 Insert front brackets into standard at appropriate height.
2 Tap front brackets downward to engage standards.
3 Using a screwdriver, install front bracket retainers.
6.6 Level the Freezer
NOTE ► Leveling feet are optional.
► Helmer recommends the use of leveling feet (unless casters are installed) and wall
► A bubble level may be used to ensure the freezer is level.
Leveling feet must be adjusted to provide unit cooler drainage.
Front-to-back
1 Using a wrench, raise or lower leveling feet.
2 When freezer is properly leveled, bottom of the unit cooler will slope downward from front to back
(toward the condensate drain line).
Side-to-side
1 Using a wrench, raise or lower leveling feet.
2 When freezer is properly leveled, bottom of the unit cooler will be horizontal (parallel to the oor).
i.Series® Models
and oor brackets (PN 400472-2) for stabilization. Contact Helmer Technical Service
for parts and instruction.
6.7 OptionalAdapterKitsforMedicationDispensingLocks
Contact Helmer Technical Service or your distributor for service documentation pertaining to medication
dispensing locks.
6.8 ReverseDoorHingeandHandle
NOTE ► Before reversing door hinge and handle, protect stored items in freezer from
extended exposure to adverse temperature.
► Freezer must be on the oor or on an elevated work surface with enough space in
front of the freezer to lay the door face-down for disassembly.
► The door hinge and handle cannot be reversed on freezers equipped with Access
Control.
6.8.1 RemovetheDoorandHinges
1 Open the lower front control panel. Switch AC ON/OFF switch OFF. Switch battery switch OFF.
2 Remove four screws holding the kick panel on the cabinet. Set the kick panel aside.
Kick panel
Remove
Remove
360142-D/D 17
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i.Series® Models
3 Remove six screws holding the access panel and cover on the cabinet. Lay the panel in front of the
cabinet, ensuring there is no strain on the power switch wires.
Remove Remove
Access panel
Access
panel cover
Remove
Access
panel cover
Access panel
Remove
4 Remove plug from the access panel (on the handle-side of the cabinet). Remove grommet from the
hole (on the hinge-side of the cabinet). Slide the braided sleeve out of the slot (on the kick plate).
Pull plug out
Pull grommet
out
Slide sleeve
out of slot
5 Cut the zip tie inside the cabinet.
Cut zip tie
6 Remove the door handle assembly.
a Remove four screws holding the door handle assembly on the door.
b Set the door handle assembly aside.
Remove
Door handle assembly.
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i.Series® Models
7 Remove door latch / door catch.
a Remove two screws holding the door latch plates and spacer bar on the cabinet
b Set the latch plates and spacer bar aside.
Cabinet
Strike plate
Remove
2 screws
Door latch plate.
8 With the door shut, remove the cover plate from both hinges.
9 Remove the spring assembly from the lower hinge.
a Use a J-hook tool to engage the left-most hole in the spring cap and rotate the spring cap from
left to right, and hold.
b Remove the pin from the spring cap.
c Allow the spring to relax.
d Use a J-hook tool to engage any hole in the spring cap compress spring downward.
e Remove spring assembly from the lower hinge.
f Set the spring assembly aside.
NOTE ► A second person should assist by supporting the door while the hinges are removed.
► The two screws holding the hinge on the door are longer than the three screws
holding the hinge on the cabinet. The screws must be installed in the same location
when moving the hinge to the opposite side of the door.
10 Remove the lower hinge.
a Support the door.
b Remove ve screws attaching the lower hinge to the door and cabinet.
c Remove the lower hinge.
d Reverse the hinge manually (as if moving the hinge from a fully-closed to a fully-open position).
e Set the lower hinge aside.
f Continue to support the door.
360142-D/D 19
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i.Series® Models
11 Remove the upper hinge.
a Remove ve screws attaching the upper hinge to the door and cabinet.
b Remove the upper hinge.
c Reverse the hinge manually (as if moving the hinge from a fully-closed to a fully-open position).
d Set the upper hinge aside.
Door
Cabinet
Hinge
Remove 2
screws (long)
Shim
Remove 3
screws (short)
Hinge plate
Hinge removal (lower hinge shown with spring removed).
12 Lay the door face-down in front of the cabinet. Ensure that there is no strain on the cable(s) passing
from the cabinet to the door.
6.8.2 ReversetheCableRoutingintheDoor
The door consists of an inner frame and outer frame. The power cable and communication cable are
connected to the display circuit board on the front of the door (behind the LCD touchscreen).
The length of the cables inside the door is approximately three feet. The cables follow a channel along
the top and side of the outer frame. Additional slack has been bundled in the cables.
A
E
B
C
D
Outer door frame (right-hinged door shown), power and communication cable.
Label Description
A Outer door frame
B Power cable (gray)
C Communication cable (black)
D Cable exit (corner of door)
E Additional cable slack
360142-D/D 20
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i.Series® Models
1 Lay the door assembly face-down on a solid work surface.
2 Remove remaining screws from both sides of the door assembly.
3 Lift the inner door frame out of the outer door frame and set aside. A J-hook tool may be used along
the bottom edge of the door assembly to lift the inner frame.
4 Remove the plug from the handle-side of the door. Set the plug aside.
Pull plug out
5 Pull the grommet out of the hole in the door. Slide the braided sleeve out of the slot.
Slide sleeve
out of slot
Pull grommet
out
6 Re-route the power cable and communication cables.
a Route cables inside the door; along the opposite side of the door frame; and out through the slot
in the corner opposite from where the cables had previously exited the door.
b Cables should follow the edge of the door frame, as closely as possible.
c Tape the cables to the door frame.
d Excess slack in the cables should be outside of the door.
360142-D/D 21
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i.Series® Models
Left: Original cable routing (right-hinged door). Right: New cable routing (left-hinged door).
7 Reposition the braided sleeve.
a Cut the zip ties (A) on the braided sleeve (B).
b Slide the sleeve and grommets (C) along the cables, towards the door.
c Slide the braided sleeve through the slot in the door and insert the door-side grommet into the
hole in the door.
d Install new zip ties to prevent the braided sleeve from moving along the cables.
A
B
C
C
A
Braided sleeve detail.
8 Reinstall the inner door frame inside the outer door frame. Install screws in the unused holes on the
door where hinges were originally installed.
6.8.3 ReinstalltheDoorandHinges
1 Install the hinges and hinge plates on the door.
a Hand-thread two screws through each hinge and into the door.
b Leave the screws slightly loose.
c If a shim was used on the lower hinge, transfer the shim to the new hinge location.
NOTE Ensure that the upper and lower hinges are not interchanged when moving the hinges to
the opposite side of the door.
360142-D/D 22
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i.Series® Models
Door
Hinge
2 screws
(long)
Hinge plate
Shim
Attach hinge to door (lower hinge shown).
NOTE A second person should assist by supporting the door while the hinges are installed.
2 Install the door on the cabinet.
a Lift the door to the cabinet.
b Align the holes in the hinges with the corresponding holes in the cabinet.
c Hand-thread three screws through each hinge and into the cabinet.
d Do not allow the weight of the door to rest on the hinges.
Cabinet
Hinge
3 screws
(short)
Attach hinge to cabinet (lower hinge shown).
3 Align the door and tighten screws.
a Support the door so the top edge of the door is level.
b Level the door using a shim if necessary.
c Tighten all screws attaching both hinges to the door and to the cabinet.
NOTE If a shim is necessary to level the door after hinge reversal, contact Helmer Technical
Service to obtain a shim.
4 Route the power and communication cables across the front of the cabinet. Attach the cables to the
zip tie holder under the cabinet on the hinge side.
Secure cables
with zip tie
Power and communication cables secured at the hinge-side of the cabinet after hinge reversal.
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i.Series® Models
5 Install the cable in the door.
a Slide the braided sleeve through the slot in the access panel.
b Install the grommet in the hole.
c Install the plug in the access panel on the opposite side.
d Allow enough slack (approximately 3”) in the braided sleeve between the door and the cabinet so
the door can pivot open and closed without straining the cable.
6 Install the access panel and cover.
7 Install the kick panel.
8 Install the door handle on the opposite side of the door.
9 Install the latch plates and spacer bar on the opposite side of the cabinet.
10 Install the hinge spring and pin assembly.
a Close the door.
b Assemble the hinge spring assembly for the left side of the door (Figure A).
c Orient the bend in the coil toward the front of the freezer (Figure B).
d Slide the internal hex cap (with washer) on to the upper hex bolt in the lower hinge.
Washer
Internal
hex cap
Spring
Pin
A
Spring cap
Bushing
B
e Use a J-hook tool in the spring cap to compress the spring upward (Figure C).
f While compressing the spring, slide the spring cap over the lower hex bolt in the lower hinge
(Figure D).
D C
g Use a J-hook tool to engage the right-most hole in the spring cap and rotate the spring cap from
right to left, and hold.
h Count four holes, starting from and including the spring cap hole closest to the end of the coil.
i Insert the pin in the fourth hole.
360142-D/D 24
Page 26
Rotate the spring using a J-hook tool then insert pin (left-hinged door shown).
11 Switch AC ON/OFF switch ON. Switch battery switch ON. Close the lower front control panel.
12 Touch Mute to disable the high temperature alarm while freezer reaches operating temperature.
13 Verify the door is level and the hinges operate smoothly and the door seals tightly.
6.9 StackedUndercounterUnits
CAUTION ► For a stacked conguration, both units must have leveling feet installed.
► The back brace bars and front stabilizing brackets must be installed [PN 400821-1
(blue) or 400821-2 (stainless steel)].
► When stacking a refrigerator and freezer (104 and/or 105 models), place the heavier
unit on the bottom.
► Do not open multiple, loaded drawers or baskets at the same time.
i.Series® Models
Call Helmer or your distributor for more information on the stacking kit, and for methods to secure both
units to the wall and/or the oor.
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7 Settings
Through the i.C³ monitoring and control system, current settings may be viewed and changed. To view
settings, touch Home, i.C³ APPS, Settings. Use a touch-drag motion to scroll up or down to display
additional settings.
NOTE ► If the Settings screen is password protected or if viewing settings for the rst time,
The i.C³ temperature monitor and controller is programmed at the factory. To change a setting, rst enter
the Settings mode, then the setting. The method for accessing the Settings mode for each setting varies.
7.1 Home Screen
The Home screen appears when:
► The Home button is touched from any other screen
► There is no interaction for two minutes on any screen other than those used to enter a password
i.Series® Models
enter factory default password of “1234”.
► When there is no interaction for two minutes, the Temperature Setpoint screen closes
and returns to the Home screen.
► Default values for general settings, alarm settings, and display settings are available
in the i.C³ User Guide.
► Changing temperature settings affects operation of the freezer. Do not change
settings unless instructed in product documentation or by Helmer Technical Service.
7.1.1 Home Screen Functions
NOTE Refer to the i.C³ User Guide for options available on all i.C³ screens.
► View current temperature readings
► View the current system time and date
► Access any of the ve customizable applications (touch i.C³ APPS for additional applications)
► View detailed information about current or previous alarm events or door open data
► View whether the monitoring system is running on battery power
► Mute audible alarms
► Turn the chamber light on and off
► View a graph of the chamber temperature
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7.2 TemperatureSettings
Temperature setpoint values are programmed at the factory. Setpoints can be viewed and changed
through the i.C³ monitoring and control system. To view temperature setpoints, touch Home, i.C³ APPS,
Settings. Details for each setpoint are displayed.
Temperature Controller Programs screen.
NOTE Default chamber temperature setpoint is -30.0 °C
Changethesetpointif:
► Your organization requires a chamber temperature other than -30.0 °C.
i.Series® Models
NOTE If the Settings screen is password protected or if viewing settings for the rst time, enter
factory default password of “1234”.
Performthefollowing:
1 Touch i.C³ APPS, i.C³Settings.
2 Enter the Settings password.
3 Touch Temperature Setpoints.
4 Touch + or – on the Temperature Setpoint spin box.
► The setpoint is the temperature at which the freezer operates.
5 Touch + or – on the Hysteresis Setpoint spin box.
► The hysteresis setpoint is the allowable uctuation in temperature, relative to the temperature setpoint.
► A lower hysteresis setpoint will limit the temperature variation to a smaller range.
► A higher setpoint will allow the temperature to vary across a larger range.
NOTE Hysteresis is factory-preset and should not be changed unless directed by Helmer
Technical Service.
6 Touch + or – on the Delay on Start-Up spin box.
► Compressor startup is delayed to allow the i.C³ monitoring and control system to start rst.
7 Touch + or – on the DutyCycleofControlRelayduringProbeFailure spin box.
► The duty cycle is the percentage of time the compressor will run in the event of a temperature
control probe failure.
Setting Initial Factory Value
Temperature Setpoint -30.0 °C
Hysteresis Setpoint 2.0 °C
Delay on Start-Up 2 minutes
Duty Cycle of Control Relay during Probe Failure 100%
Defrost Time 15 minutes
360142-D/D 27
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7.3 Temperature Calibration
Temperature 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 Home, i.C³
APPS, Settings. Details for each setting are displayed.
Temperature Calibration screen.
NOTE ► If the Settings screen is password protected or if viewing settings for the rst time,
enter factory default password of “1234”.
► When there is no interaction for two minutes, the Temperature Setpoint screen closes
and returns to the Home screen.
► The Lower Temperature calibration setting is not applicable to undercounter freezer
models.
► Control Sensor and Control Sensor Offset, Evaporator Defrost and Evaporator
Defrost Offset, and Compressor Probe Temperature calibration settings are factory-
preset and should not be changed unless directed by Helmer Technical Service.
i.Series® Models
7.3.1 Calibrate Monitor Probe
Verify monitor probe is reading chamber temperature correctly by comparing monitor probe reading to
temperature read by an independent thermometer. If monitor probe is not reading correctly, change the
value displayed on the monitor.
NOTE ► Probe in the bottle is connected to the monitoring system and senses chamber
temperature. This probe does not affect freezer setpoint.
► Default setting for monitor is -30.0 °C.
► Value is factory-preset.
Obtain:
► Calibrated reference thermometer, independent and traceable per national standards.
► Tape or wire ties to attach thermometer to monitor probe.
Calibrate probe:
1 Remove monitor probe from the probe bottle.
2 Unscrew the cap from the bottle.
3 Attach the thermometer to the 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 for 10 minutes.
5 Observe and note the thermometer temperature.
6 Touch, i.C³ APPS, Settings, Temperature Calibration.
360142-D/D 28
Page 30
7 Touch + or – on the Upper Temperature spin box to increase or decrease the value to match the
measured value. The message “New Setting Saved” appears next to the spin box.
NOTE After saving the new temperature value, the displayed temperature may not match the
new value. This is normal.
9 Remove thermometer from probe.
10 Replace bottle cap, ensuring a tight t.
11 Place probe in bottle, immersing at least 2” (50 mm).
7.3.2 Control Sensor Offset
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 offset value is used by
the control system to compensate for the difference.
The temperature controller adjusts chamber temperature around the freezer setpoint by activating the
compressor when the control probe registers above the setpoint.
NOTE ► Control Sensor Offset is factory-preset and should not be changed. Contact Helmer
Technical Service for instructions regarding changing the Control Sensor Offset.
► The monitor temperature must be veried and accurate prior to adjusting the Control
Sensor Offset.
i.Series® Models
1 View and record the Freezer Setpoint. (Reference Section II, Item 7.2)
2 Allow the unit to run with calibrated monitor temperature for several compressor cycles, and record
the average monitor temperature .
3 View and record the current Control Offset value.
4 Subtract the Freezer Setpoint from the average monitor temperature and record the difference.
5 Add the current Control Offset value to the recorded difference determined in the previous step to
establish the new Control Offset value.
EXAMPLE 1 Freezer Setpoint is 4.0
2 Average monitor temperature is 5.2
3 Current Control Offset is 0.3
4 Subtract: 5.2 - 4.0 = 1.2; difference between average temperature and setpoint
5 Add 0.3 + 1.2 = 1.5; new Control Offset value
Enter the new offset value:
1 Touch Home, i.C³ APPS, Settings.
2 Enter the Settings password.
3 Touch Temperature Calibration.
4 Touch + or – on the Control Sensor spin box.
► Value is factory-preset to match the temperature measured in the unit cooler (at the control
sensor) by a calabrated reference thermometer.
5 Touch + or – on the Control Sensor Offset spin box.
6 Touch Home to return to home screen.
360142-D/D 29
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7.3.3 Calibrate Compressor and Evaporator Probe
The compressor and evaporator temperature probes have been factory-calibrated. Calibration settings
should not be changed unless directed by Helmer Technical Service.
7.3.4 FactoryDefaultSettings
Settings listed below may be simultaneously returned to factory default values.
NOTE The factory default settings may not be the same as the settings that were factory-
calibrated before the freezer was shipped.
Setting Restored Value
Home Screen Application Icons i.C³ APPS, Temperature Alarm Test, Temperature
Display Brightness High (3 symbols)
Password (for Settings screen) 1234
Sounds On
Alarm Volume 9
Alarm Tone On
Temperature Calibration Values Values previously entered during setup
Unit ID Serial number entered at factory
Date Format MM/DD/YYYY
Day Not affected (maintained in real-time clock)
Month
Year
Time Format 12-hour
Minute Not affected (maintained in real-time clock)
Hour
AM/PM
Language Language previously selected during setup
Temperature Units °C
Password Protection (for Settings screen) On
Temperature Graph Screensaver On
Access Control (optional) as Home Page On
High Temperature Alarm Setpoint -20.0 °C
High Temperature Alarm Time Delay 0 minutes
Low Temperature Alarm Setpoint * -35.0 °C
Low Temperature Alarm Time Delay 0 minutes
Power Failure Alarm Time Delay 1 minute
Probe Failure Alarm Time Delay 0 minutes
Door Open (Time) Alarm Time Delay 3 minutes
Compressor Temperature Alarm Setpoint 50.0 °C
Compressor Temperature Alarm Time Delay 0 minutes
Chamber Setpoint -30.0 °C
Chamber Hysteresis 2.0 °C
Delay on Start-Up 2 minutes
i.Series® Models
Graph, Information Logs, Download
360142-D/D 30
Page 32
Setting Restored Value
Control Relay Probe Failure Duty Cycle 100%
Defrost Event #1 On/Off Off
Defrost Event #1 Start Time 12:00 AM
Defrost Event #2 On/Off On
Defrost Event #2 Start Time 8:00 AM
Defrost Event #3 On/Off Off
Defrost Event #3 Start Time 4:00 PM
Defrost Event #4 On/Off On
Defrost Event #4 Start Time 6:00 PM
Defrost Time/Defrost Safety Operation Time 15 minutes
7.3.5 RestoreFactoryDefaultSettings
1 Touch Home, i.C³ APPS, Settings, RestoreFactorySettings.
2 A “Are you sure you want to restore factory settings?” message appears. Do one of the following:
► Touch Yes. The message screen closes and factory settings are restored.
► Touch No. The message screen closes and factory settings are not restored.
7.3.6 ChangeFactorySettings
i.Series® Models
Several of the freezer operating parameters are congured at the factory. The settings listed below are
set at the factory, and may be changed at the direction of Helmer Technical Service.
Setting Description
Temperature Controller Page Enable or disable the temperature controller screen
Factory settings may be viewed and changed. Contact Helmer Technical Service to verify if changing
factory settings is necessary, and for instructions in accessing Factory Settings screen.
360142-D/D 31
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7.4 Test Alarms
Test alarms to ensure they are working correctly. The freezer has alarms for chamber temperature,
compressor temperature, door open (time), power failure, low battery, and power failure.
7.4.1 Automatic Chamber Temperature Alarm Test
NOTE ► Test can be aborted by touching Cancel Test.
► Test takes less than ve minutes.
► If the temperature alarm test does not automatically complete within two minutes,
restart the i.C³ monitoring system.
When performing an automatic temperature alarm test, the Peltier device heats or cools the monitor
probe until the high or low alarm setpoint is reached. An event is added to the Event Log to indicate a
temperature alarm was activated. The Alarm Test icon is displayed on the Temperature Graph to indicate
the temperature alarm was test-induced.
i.Series® Models
Test the low alarm:
1 Identify current setting for low alarm setpoint.
2 Touch Home, i.C³ APPS, Temperature Alarm Test.
3 Touch Low Alarm Test.
4 “Peltier Test Probe Cooling” message appears.
5 When displayed temperature reaches the alarm setpoint, temperature reading turns red.
6 When completed, “Test Complete” appears.
7 Touch Home, i.C³ APPS, InformationLogs, EventLog. Touch the event to view event details.
8 Observe the temperature at the time of the low temperature alarm event. Compare this to the alarm
setpoint. If values do not match, refer to Section II, Item 9 (Troubleshooting).
Testthehighalarm:
1 Identify current setting for high alarm setpoint.
2 Touch Home, i.C³ APPS, Temperature Alarm Test.
3 Touch HighAlarmTest.
4 “Peltier Test Probe Warming” message appears.
5 When displayed temperature reaches the alarm setpoint, the temperature reading turns red.
6 When completed, “Test Complete” appears.
7 Touch Home, i.C³ APPS, InformationLogs, EventLog. Touch the event to view event details.
8 Observe the temperature at the time of the high temperature alarm event. Compare this to the alarm
setpoint. If values do not match, refer to Section II, Item 9 (Troubleshooting).
360142-D/D 32
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Cancel the test:
1 Touch Home, i.C³ APPS, Temperature Alarm Test.
2 Touch Cancel Test.
NOTE When cancelling an automatic test, the message indicating the test is in progress clears
immediately. If a setpoint was reached before the test was cancelled, the alarm activates
and clears as described earlier.
7.4.2 Manual Chamber Alarm Test
NOTE Before testing alarms, protect items in freezer from extended exposure to adverse
temperature.
Obtain:
► glass with 4 oz. (120 mL) of product simulation solution (1:1 ratio of water to propylene glycol or
equivalent low-temperature uid).
NOTE Temperature probes are fragile; handle with care.
Testthehighalarm:
1 Identify setting for high alarm setpoint.
2 Place the glass of product simulation solution in the freezer.
3 When the product simulation solution has stabilized at the chamber temperature, remove the solution
from the freezer.
4 Remove the monitor probe from the probe bottle and insert into the product simulation solution.
5 Observe the temperature on the i.C³ display at which the high temperature alarm sounds.
6 Compare the temperature at which the alarm sounds to the high alarm setpoint. If values do not
match, refer to Section II, Item 9 (Troubleshooting).
7 Remove probe from product simulation solution.
8 Place monitor probe in probe bottle, immersing it at least 2” (50 mm).
i.Series® Models
7.4.3 Power Failure Alarm Test
NOTE During a power failure, the power failure alarm sounds and the battery provides power to
the monitoring system.
1 Change Power Failure delay setting to 0 minutes.
a Touch Home, Settings, AlarmSettings.
b Touch + or – on the Power Failure spin box to change the value to 0.
2 Switch AC ON/OFF switch OFF. Power failure alarm will activate immediately.
3 Switch AC ON/OFF switch ON. Power failure alarm will clear and audible alarm will cease.
4 Change Power Failure time delay to the original setting.
7.4.4 Door Open Alarm Test 1 Change Door Open (Time) delay setting to 0 minutes.
a Touch Home, Settings, AlarmSettings.
b Touch + or – on the Door Open (Time) spin box to change the value to 0.
2 Open door. Alarm will activate immediately.
3 Close door. Alarm will clear and audible alarm will cease.
4 Change the Door Open (Time) setting to the original setting.
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7.5 UpgradeSystemFirmware
Helmer may occasionally issue updates for the i.C³ rmware. Follow upgrade instructions included with
the rmware update.
7.6 Calibrate the Touchscreen
The i.C³ touchscreen has been calibrated at the factory to ensure that when the screen is touched,
the desired key touch is selected. If the i.C³ touchscreen or display circuit board is replaced after the
freezer has been shipped from the factory, the touchscreen must be recalibrated. If the screen must be
recalibrated, contact Helmer Technical Service to obtain the calibration le.
Calibrate the screen:
1 Insert the ash memory device with the calibration program into the USB port on the i.C³ bezel. The
ash memory device can be inserted while any screen displayed on the i.C³.
2 Wait 15 to 30 seconds for the calibration le to load.
3 When the calibration screen appears, remove the ash memory device from the USB port.
4 Follow the on-screen instructions, touching the crosshair icons as they appear on the screen.
NOTE For accurate calibration results and to avoid damage to the touchscreen, touch the
crosshairs with the eraser end of a pencil.
5 After all crosshairs have been touched, the i.C³ will reboot and display the language screen.
i.Series® Models
NOTE ► For accurate calibration results and to avoid damage to the touchscreen, touch the
crosshairs with the eraser end of a pencil.
► If the screen was unintentionally touched outside of any of the crosshair icons during
calibration, the screen may be recalibrated using the process outlined above.
7.7 View Manufacturer and Product Information
View version information for contacting Helmer.
1 Touch i.C³ APPS, Contact Helmer.
2 Manufacturer contact information appears.
3 Software version appears.
360142-D/D 34
Page 36
8 Maintenance
!
NOTE ► Refer to the operation manual for the preventive maintenance schedule.
► Before performing maintenance, protect items in freezer from extended exposure to
adverse temperature.
► Allow freezer temperature to stabilize at setpoint after performing service or after
extended door opening.
8.1 RechargeRefrigerant
CAUTION ► Review all safety instructions prior to recharging refrigerant. Refer to Section I, Item
2 (Safety).
► Maintenance should only be performed by trained refrigeration technicians.
NOTE Use only non-CFC R-404A refrigerant.
Full initial refrigerant charge varies by model and power requirements, which can be found on the product
specication label.
i.Series® Models
Model
105 model 115 V 11.0 oz (312 g)
Obtain:
► Refrigerant
► Calibrated pressure gauge (0 psi to 220 psi (0 kPa to 1520 kPa))
Addrefrigerant:
1 Attach pressure gauge to the ttings on the refrigeration lines.
2 Monitor the low side (suction) pressure through a full compressor cycle.
3 Measure the pressure at the end of the next cycle, immediately before the compressor stops.
NOTE Pressure varies depending on ambient air temperature.
4 Add refrigerant. Check the pressure on the high side and the low side.
► Low side = 5 psi to 7 psi (34 kPa to 48 kPa)
► High side = 180 psi to 220 psi (1241 kPa to 1517 kPa)
5 Remove pressure gauge.
8.2 CheckOptionalAccessControlSystemBattery
During an AC power failure, the Access Control backup battery provides backup power to power the
magnetic Access Control lock. Test the Access Control backup battery to ensure it is working properly.
Power
Requirements
230 V 18.5 oz (524 g)
InitialCharge
Checkthebattery:
1 Ensure monitoring system / Access Control battery key switch is switched ON.
2 Switch AC ON/OFF switch OFF.
3 Attempt to open the cabinet door.
► If the door remains locked, the battery is functional.
► If the door does not remain locked, replace the battery.
4 Switch AC ON/OFF switch ON.
360142-D/D 35
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8.3 CheckMonitoringSystemBattery
!
On all i.C³ screens, the Battery icon will appear in the header bar when the system is running on battery
power and the screen brightness will automatically be reduced. The monitoring system will automatically
disable some features to extend battery life.
Checkthebattery:
1 Switch AC ON/OFF switch OFF.
a Screen should continue to display information with reduced brightness.
b Battery icon will appear on the screen.
c If the display is blank, replace battery.
2 Switch AC ON/OFF switch ON.
NOTE Use a battery which meets manufacturer’s specications
8.4 Clean the Freezer
8.4.1 Condenser Grill
CAUTION Disconnect freezer from AC power when cleaning the condenser grill.
In environments where freezer is exposed to excessive lint or dust, condenser grill may require cleaning
more frequently than stated in preventive maintenance schedule.
i.Series® Models
Clean the condenser grill using a soft brush and a vacuum cleaner.
8.4.2 Exterior
Clean glass surfaces with soft cotton cloth and glass cleaner. Clean exterior surfaces with soft cotton
cloth and non-abrasive liquid cleaner.
8.4.3 Interior
Clean painted surfaces with mild detergent. Clean stainless steel surfaces with a general-purpose
laboratory cleaner suitable for stainless steel.
8.4.4 DoorGaskets
Clean with soft cloth and mild soap and water solution.
8.4.5 CleanandRellProbeBottle
Obtain:
► Fresh water-bleach solution (not provided)
► 1:9 ratio of bleach to water
► Bleach is 5% solution of commercial sodium hypochlorite (NaOCl)
► Equivalent oxidizing cleaner/disinfectant approved by your organization may be substituted
► 4 oz (120 mL) of product simulation solution per bottle
► Solution is a 1:1 ratio of water to propylene glycol (or equivalent low-temperature uid)
Cleanandrellbottle:
1 Remove probe from bottle.
2 Remove bottle from bracket.
3 Clean bottle with water-bleach solution.
4 Fill bottle with 4 oz (120 mL) of product simulation solution.
360142-D/D 36
Page 38
5 Cap bottle tightly to minimize evaporation.
6 Place bottle in bracket.
7 Replace probe, immersing at least 2” (50 mm).
8.4.6 i.C³® Touchscreen
Clean touchscreen with a soft, dry cotton cloth.
8.5 Defrost the Unit Cooler
Defrost events may be scheduled to occur at specic times. A defrost event can be triggered on demand
without affecting a programmed defrosting schedule.
1 Touch i.C³ APPS, Temperature Setpoints.
2 Touch the Manual Defrost: Start button.
► The Defrost icon will appear for the duration of the defrost cycle.
3 To cancel, touch the Manual Defrost: Stop button.
8.6 Unit Cooler Cover Removal and Installation
If unit cooler cover is not removed as detailed in this procedure the drain port may be damaged. Improper
drainage may result in excessive icing and freezer’s inability to maintain temperature.
Required tools:
► 5/16” socket wrench
► Tool to push putty away from the drain tube
i.Series® Models
A
B
Drain line, fan, and heater components.
Label Description
A Unit cooler cover
B Drain port
C Drain fan
D Fan tube
E Heating element
F Heater wires
G Protective cover
H Drain tube
C
D
E
F
G
H
360142-D/D 37
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8.6.1 Remove the Unit Cooler Cover
!
1 Switch AC ON/OFF switch OFF. Switch battery switch OFF.
2 Remove the rear protective cover (G) on the rear of the cabinet.
a Loosen four screws
b Slide the cover up and remove
c Cut the wire ties securing the drain line to the cabinet
3 On the back of the cabinet, peel the putty back to expose the drain tube (H) and drain heater (E).
CAUTION The condensate evaporator and water evaporation tray are hot.
4 Inside the cabinet, remove the putty around the drain tube.
5 Remove the wire ties securing the heater wires (F) to the cabinet. Verify the heating element is cool.
6 Remove the drain heater from the drain tube.
7 Remove the drain tube (H) by pulling it downward. The drain tube should separate from the fan tube
(D) at the 90° elbow, leaving the fan tube (D) attached to the fan (C).
a The section of the drain tube inside the cabinet should separate from unit cooler drain port (B).
b Gently twist the drain tube from left to right to separate it from the unit cooler drain port.
c Pivot the drain tube upward then remove it from the cabinet.
8 Remove top drawer, basket, or shelf from the chamber.
9 Remove the unit cooler cover (A).
a Hold unit cooler cover in place to prevent it from dropping.
b Use the socket wrench to remove four screws securing the unit cooler cover.
c Carefully lower unit cooler cover to avoid damage to the fan wiring.
i.Series® Models
8.6.2 Install the Unit Cooler Cover 1 Verify unit cooler wiring is connected and routed correctly.
a Wiring should be routed above copper tube inside the unit cooler.
b Reconnect wires if they have separated.
2 Attach unit cooler cover.
a Lift unit cooler cover into place.
b Front edge of the cover should be behind the unit cooler case.
c Use the socket wrench to install four screws to secure the unit cooler cover.
3 Insert the drain tube through hole in the cabinet.
a Push drain tube upward at an angle, toward the unit cooler drain port.
b Picot the drain tube downward then push the tube upward.
c In the chamber, push the drain tube onto unit cooler drain port.
4 Attach the drain tube to the fan tube.
5 Insert the drain line heater in the drain tube.
a Insert the heater at an upward angle.
b The black heating element should no longer be visible.
6 Reinstall top drawer, basket, or shelf if previously removed.
7 Reattach the drain line heater wires to the cabinet.
8 On the back of the cabinet, press putty around the drain hose and partially into the hole.
9 Install the protective cover on the rear of the cabinet.
10 Switch AC ON/OFF switch ON. Switch battery switch ON.
11 Touch Mute to disable the high temperature alarm while freezer reaches operating temperature.
360142-D/D 38
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9 Troubleshooting
!
CAUTION Review all safety instructions prior to troubleshooting. Refer to Section I, Item 2 (Safety).
9.1 General Operation Problems
Problem Possible Cause Action
A drawer or basket
does not slide easily.
The door does not
open easily.
The monitor display is
hard to read.
The alarm monitor is
not responding.
“Probe Failure” is
displayed on the
monitor.
Debris in the drawer
slides.
Drawer or basket
slides are not
lubricated.
Ice buildup in the
drawer slides.
Drawer or basket is
misaligned or not
level.
A drawer or basket
slide is faulty.
Debris in the hinges. ► Conrm the hinges are free of debris. Clean the
Hinge is faulty. ► Conrm the hinge spring or pin is not damaged.
Door hinges are not
lubricated.
Lower hinge spring
and/or pin may be
bent or faulty.
Screen brightness is
set too low.
Digital electronics are
locked because of an
interruption in power.
Defrost probe or
monitor probe wiring
is an open circuit.
i.Series® Models
► Pull the drawer or basket out and conrm the
slides are free of debris. Clean if necessary.
► Using a multi-purpose grease, lubricate the
bearings in the slides.
► Pull the drawer or basket out and conrm the
slides are free of ice. De-ice if necessary.
► Conrm both slides for the drawer or basket are
mounted at the same height.
► Conrm the slide is operating correctly. Replace if
necessary.
hinges if necessary.
Replace entire hinge (lower hinge only), if
necessary.
► Using a general-purpose grease, lubricate the
pivots in the hinges.
► Replace the entire lower hinge spring and pin
assembly.
► Change the screen brightness.
► Reset the monitoring system.
► Check the continuity of the probe wiring and
connections. Secure the connections if necessary.
► Conrm the probe is providing resistance in the
range of 86 Ω to 110 Ω. Replace the probe if
necessary.
360142-D/D 39
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9.2 Chamber Temperature Problems
Problem Possible Cause Action
The chamber
temperature displayed
is higher or lower
than the actual
temperature.
Monitor probe is not
calibrated.
Connections for the
monitor probe are
loose.
Monitor probe wiring
is an open circuit.
Probe bottle is empty,
or the amount of
solution is too low.
Solution in the probe
bottle is frozen.
Digital electronics are
locked because of an
interruption in power.
Monitor is not
calibrated.
The chamber
temperature meets
Temperature alarm
setpoint was changed.
an alarm condition,
but the appropriate
temperature alarm is
not active.
The compressor runs
continuously.
Freezer setpoint is set
too low.
Temperature monitor/
control board is faulty.
Compressor starting
relay is faulty.
i.Series® Models
► Check the chamber temperature calibration.
Change the calibration if necessary.
► Test the monitor probe connections. Secure the
connections if necessary.
► Check the continuity of the probe wiring. Replace
the probe if necessary.
► Check the level of product simulation solution in
the bottle. Clean and rell the bottle if necessary.
► Rell the bottle with new solution.
► Reset the monitoring system.
► Conrm the monitor probe is reading correctly.
Calibrate the monitor probe if necessary.
► Check the current setpoints for the temperature
alarms. Change the setpoints if necessary.
► Conrm the setpoint is set within the operating
range and change it if necessary.
► Conrm the temperature controller or monitor/
control board is operating correctly. Replace it if
necessary.
► Conrm the relay is operating correctly. Replace
the relay if necessary.
360142-D/D 40
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Problem Possible Cause Action
The chamber
temperature does not
Temperature monitor/
control board is faulty.
stabilize at the freezer
setpoint.
Condensing unit fan is
not running.
Unit cooler fan is not
running.
Compressor motor
has seized.
Refrigerant level is too
low.
Compressor starting
relay is faulty.
Condenser grill is
dirty.
Circulation in the
chamber is not
adequate.
Ambient air
temperature around
the freezer is too high.
A component is
faulty or internal
connections are loose.
i.Series® Models
► Conrm the temperature controller or monitor/
control board is operating correctly. Replace it if
necessary.
► Check the condensing unit fan connections.
Replace the fan motor if necessary.
► Check the voltage to the fan when door switch is
activated. Replace the fan motor or door switch if
necessary.
► Replace the compressor.
► Check the refrigeration lines for leaks and repair
them if necessary. Check the refrigerant level.
Recharge the refrigerant if necessary.
► Conrm the relay is operating correctly. Replace
the relay if necessary.
► Check the condenser grill. Clean it if necessary.
► Check if there are any items that may obstruct air
ow and remove them if necessary.
► Conrm freezer location meets requirements. Refer
to the operation manual.
► Contact Helmer Technical Service.
9.3 Alarm Activation Problems
Problem Possible Cause Action
The freezer is in
Alarm system is faulty. ► Conrm the circuit board and line connections are
an alarm condition,
but alarms are not
audible.
Monitor/control board
is faulty.
Alarm buzzer is faulty. ► Replace the alarm buzzer.
A component is
faulty or internal
connections are loose.
Audible alarms are
muted.
The freezer meets an
alarm condition, but
the appropriate alarm
is not active.
Monitor/control board
is faulty.
Alarm setpoint was
changed.
A component is
faulty or internal
connections are loose.
functioning correctly.
► Replace parts with those included in the control
board kit, or replace the monitor/control board.
► Contact Helmer Technical Service.
► Verify that audible alarms are not muted. If time
remaining is greater than ve minutes, change
MUTE timer value to ve minutes and wait until
timer resets.
► Replace parts with those included in the control
board kit, or replace the monitor/control board.
► Check the current setpoints for the alarms.
► Contact Helmer Technical Service.
360142-D/D 41
Page 43
Problem Possible Cause Action
The High Temperature
alarm activates when
the door is opened,
then clears shortly
after the door is
closed.
Connections for the
monitor probe are
loose.
Monitor probe is
faulty.
Unit cooler fan
continues to run while
the door is open.
The probe bottle is
empty.
The high temperature
alarm setpoint is set
too low.
A component is
faulty or internal
connections are loose.
The freezer is
connected to power,
but the AC Power
Outlet connection is
faulty.
Power cord is faulty. ► Conrm the power cord is connected securely.
Failure alarm is active.
ON/OFF AC power
switch located inside
the front lower panel
is faulty.
ON/OFF AC power
switch is OFF.
A component is
faulty or internal
connections are loose.
A component is
faulty or internal
connections are loose.
Circuit breaker is
tripped.
i.Series® Models
► Check the monitor probe connections. Secure the
connections if necessary.
► Test the probe. Replace the probe if necessary.
► Test the door switch and unit cooler fan
connections. Secure the connections if necessary.
Replace the door switch or fan motor if necessary.
► Check the level of product simulation solution in
the bottle. Clean and rell bottle if necessary.
► Check the setpoint. Change the setpoint if
necessary.
► Contact Helmer Technical Service.
► Verify power at the outlet. Repair the original
outlet or connect to a different outlet if necessary.
Secure the power cord if necessary.
► Replace the ON/OFF AC power switch.
► Turn the ON/OFF AC power switch to the ON
position.
► Contact Helmer Technical Service.
► Contact Helmer Technical Service.
► Reset or replace the circuit breaker.
360142-D/D 42
Page 44
Problem Possible Cause Action
The Door Open
alarm is activating
Door is not closing
completely.
sporadically.
Door is closing but not
sealing completely.
Connections for the
door switch are faulty.
Door switch is faulty. ► Replace the door switch.
Monitor/control board
is faulty.
A component is
faulty or internal
connections are loose.
Door Ajar Timeout is
set to zero, causing
the alarm to activate
immediately when the
door is opened.
i.Series® Models
► Clean hinges if debris is present.
► Conrm door is aligned.
► Conrm hinge spring and/or pin are not damaged.
Replace hinge (lower only) if necessary.
► Conrm the door gasket seals completely.
Replace the door gasket if necessary.
► Test the switch connections. Secure the
connections if necessary.
► Replace parts with those included in the control
board kit, or replace the monitor/control board.
► Contact Helmer Technical Service.
► Check the current setpoint for the Door Ajar alarm.
Change the setpoint if necessary.
All alarms are
activating sporadically.
Alarm system is faulty. ► Conrm the circuit board and line connections are
functioning correctly.
Monitor/control board
is faulty.
A component is
► Replace parts with those included in the control
board kit, or replace the monitor/control board.
► Contact Helmer Technical Service.
faulty or internal
connections are loose.
Compressor is
overheating due to
► Check the condenser grill. Clean if necessary.
► Conrm freezer location meets requirements.
lack of airow.
Condenser alarm
setpoint is too low.
Refrigerant level is too
low.
► Conrm the alarm setpoint is set at the expected
or correct value.
► Check refrigeration lines for leaks and repair if
necessary. Check the refrigerant level. Recharge
refrigerant if necessary.
360142-D/D 43
Page 45
Problem Possible Cause Action
The condenser alarm
is active.
Refrigerant level is too
low.
Connections for
the condenser
temperature probe are
loose.
Condenser
temperature probe is
faulty.
Condenser ns are
dirty.
Compressor is
overheating due to a
lack of air ow.
Condenser probe is
not calibrated.
Condenser alarm
setpoint is too low.
Condenser fan motor
is faulty.
A component is
faulty or internal
connections are loose.
An alarm activated,
but the temperature
recorded at activation
does not match the
alarm setpoint.
The No Battery
alarm is activating
sporadically.
Monitor settings are
not calibrated.
Temperature changed
slightly around the
time of activation.
Battery voltage
level on the backup
batteries for the
monitoring system is
low.
i.Series® Models
► Check refrigeration lines for leaks and repair if
necessary. Check refrigerant level. Recharge if
low.
► Test the probe connections. Secure the
connections if necessary.
► Test the probe. Replace the probe if necessary.
► Clean as necessary, or order new ones from
Helmer or your distributor.
► Check the condenser grill and clean if necessary.
► Conrm the freezer is correctly located. Refer to
the operation manual.
► Conrm the condenser probe is reading correctly.
Calibrate the probe if necessary.
► Conrm the alarm setpoint is at the appropriate
value.
► Replace the condenser fan motor.
► Contact Helmer Technical Service.
► Conrm the monitor probe is reading correctly.
Calibrate the probe if necessary.
► No action necessary.
► Replace the backup batteries for the monitoring
system.
360142-D/D 44
Page 46
9.4 TestingProblems
Problem Possible Cause Action
The automatic
temperature tests do
not work.
Connections for the
monitor probe are
loose.
Monitor probe is
faulty.
Monitor/control board
is faulty.
High Alarm setpoint
is set signicantly
higher than the default
value, or the Low
Alarm setpoint is set
signicantly lower
than the default value.
A component is
faulty or internal
connections are loose.
9.5 CondensationandIcingProblems
i.Series® Models
► Test the monitor probe connections. Secure the
connections if necessary.
► Test the monitor probe. Replace the probe if
necessary.
► Replace parts with those included in the control
board kit, or replace the monitor/control board.
► Conrm the alarm setpoints are set at the
expected or correct values.
► Test the temperature alarms manually.
► Contact Helmer Technical Service.
Problem Possible Cause Action
There is excessive
water in the water
Humid air is entering
the chamber
evaporation tray
inside the lower
compartment in the
back of the unit.
There is excessive ice
in the chamber.
Humid air is entering
the chamber.
Unit cooler drain
line is damaged or
restricted.
Drain line is plugged. ► Conrm the drain tube is free of debris. Remove
External drain fan is
faulty.
There is excessive
moisture on the doors.
Humid air is entering
the chamber.
Relative humidity
around freezer is too
high.
► Conrm the freezer is level, and the door is
aligned, closing tightly, and sealing correctly.
Correct issues as necessary.
► Conrm the freezer is level, and the door is
aligned, closing tightly, and sealing correctly.
Correct issues as necessary.
► Conrm the unit cooler drain line is free of debris
and is not restricted. Remove debris if necessary.
debris if necessary.
► Conrm the external drain fan is running. Hold a
piece of paper in front of the fan and conrm that
the paper is being drawn toward the freezer.
► Conrm the connections are secure. Tighten
connections if necessary.
► Replace the drain line fan if necessary.
► Conrm the freezer is level, and the door is
aligned, closing tightly, and sealing correctly.
► Conrm freezer location meets requirements.
360142-D/D 45
Page 47
Problem Possible Cause Action
After a defrost cycle,
no water ows into
the water evaporation
tray.
Not enough time has
elapsed since the end
of the defrost cycle.
Drain line is plugged. ► Conrm the drain tube is free of debris. Remove
Drain line heater is
faulty.
Defrost heater on the
evaporator in the unit
cooler is not working.
i.Series® Models
► Allow approximately 20 minutes after the end
of the defrost cycle to check for water in the
evaporation tray.
debris if necessary.
► Conrm the drain line heater is warm to the touch.
Contact Helmer Technical Service to resolve
issues as necessary.
► Check for ice buildup on the evaporator by looking
through the fan grill with a ashlight. If there is
signicant ice buildup inside or behind the unit
cooler, initiate a defrost cycle of the freezer.
360142-D/D 46
Page 48
10 Parts
NOTE ► Before replacing parts, protect items in freezer from extended exposure to adverse
temperature.
► Allow freezer temperature to stabilize at setpoint after replacing parts or after
extended door opening.
10.1 Front
10.1.1 Control System Display
i.Series® Models
A
B
C
Left: Front view, LCD touchscreen. Right: Rear view showing display board.
Label Description PartNumber
A Interface cable 800010-1 IG
B Power cable 800010-1 IH
C Display assembly (includes touchscreen, display board,
interface cable, speaker)
800041-1 IQ
Schematic
Label
360142-D/D 47
Page 49
NOTE ► The i.C³ display assembly is sensitive to static electricity and can be damaged by
electrostatic discharge. Use proper ESD precautions when handling the display
assembly.
► Although the touchscreen and display board may be replaced independently of the
i.C³ display assembly, Helmer recommends replacing the complete assembly.
10.1.2 ControlandMonitoring
A B C
Control and monitoring features.
i.Series® Models
Label Description PartNumber
A i.C³ monitoring and control system - -
B Temperature chart recorder (standard on plasma freezer
model, optional on laboratory model)
C Chart paper (52 sheets) 220419 -
Not
Chart recorder backup battery 120218 -
shown
10.1.3 Lower Panel
Lower panel features.
Label Description PartNumber
A Battery backup switch 120202 IC
B Battery access door - -
C Circuit breakers (230 V models only) 120288 C
D ON/OFF AC power switch 120478 D
Not
Monitoring system backup battery 120628 IB
shown
Schematic
Label
500613-1 -
A B C D
Schematic
Label
360142-D/D 48
Page 50
10.1.4 Access Control Option
i.Series® Models
Access Control features (iPF105 model shown).
Label Description PartNumber
10.2 Rear
A
B
C
D
A
C
B
Schematic
Label
A Door handle (includes manual keyed lock) 322000-1 -
B Magnetic lock assembly (includes magnet and door handle) 800139-1 AXb
C Backup battery key switch 401220-1 AXa
M
G
H
E
N
REF
SN
Version D
www.helmerinc.com
ILF105
2000000
I
J
K
F
L
O
Rear features.
Label Description PartNumber
A Nut anges for brace bars used in stacking
- -
Schematic
Label
undercounter units
B Rear access port - -
C Drain line fan 115 V: 400909-1
Q
230 V: 400909-2
D Drain line heater 115 V: 120590
T
230 V: 120485
360142-D/D 49
Page 51
i.Series® Models
!
Label Description PartNumber
E Drain line assembly 400910-1 -
F Power connector - -
Not
shown
Not
shown
Not
shown
Cover for communication ports and remote alarm
contacts
G Rear cover 321184-1 -
H Remote alarm contacts - -
I USB port 120638 IE
J RJ-45 Ethernet port 800008-2 IF
RS-232 COM port (optional) - -
K Condensate evaporator tray - -
L Power cable (with connector) North American models
M Condenser probe 800039-1 IL
N Compressor 115 V: 800012-1
O Condenser fan motor 115 V: 120608
Caster (optional, swivel with brake) 220467 -
- -
120 V: 120630
230 V: 120631
European models
230 V: 120156
Chinese models
203 V: 120547
Saudi Arabian models
230 V: 120641
230 V 50 Hz: 800104-1
230 V 60 Hz: 800105-1
230 V 50 Hz: 120660
230 V 60 Hz: 120661
Schematic
Label
A
J
K
10.3 Electrical Tray
Kick plate (removed). Pull-out electrical components tray (open).
CAUTION Disconnect the freezer from AC power before accessing the electrical tray.
360142-D/D 50
Page 52
10.3.1 Electrical Tray Components
i.Series® Models
A
B
C
Electrical tray features.
Label Description PartNumber
A Power supply board 800035-1 ID
B Compressor relay 115 V: 120426
230 V 50 Hz: 120669
230 V 60 Hz: 120671
C i.C³ control board 800034-1 IA
Not
shown
Not
Power line lter 115 V: 120299
230 V: 120677
Compressor power line lter 120706 V
shown
Schematic
Label
L
B
NOTE The i.C³ control board is sensitive to static electricity and can be damaged by electrostatic
discharge. Use proper ESD precautions when handling the board.
360142-D/D 51
Page 53
10.4 Interior
A
B
C
i.Series® Models
E
F
G
H
I
D
J
Storage features.
Label Description PartNumber
A Door Stainless steel: 800063-2
Powder coated without Access Control: 800063-1
Powder coated with Access Control: 800144-1
B Mullion heater (behind strike
plates)
115 V: 800081-1
230 V: 800106-1
C Drawer (blood bank model) 400854-3 -
D Door switch 120380 M
E Roll-out basket (optional) 400890-3 -
F Standard for shelf, drawer, or
321173-1 -
roll out basket
G Monitor probe 800038-1 IK
H Drawer slide for drawer or roll
400753-2 -
out basket
I Probe bottle and propylene
glycol kit
400922-2 -
J Shelf 400814-1 -
Not
shown
Optional adapter kit for
medication dispensing lock
Call Helmer or your distributor for specic
information
Schematic
Label
-
U
-
360142-D/D 52
Page 54
10.4.1 Unit Cooler
Unit cooler interior features.
i.Series® Models
A B C D E F
Label Description PartNumber
A Unit cooler assembly 115 V: 120592
B Fan guard - -
C Unit cooler fan motor 115 V: 120540
D Control probe 800048-1 IT
E Defrost heater 115 V: 120633
F Defrost heater limit thermostat 800014-1 S
Not
Defrost temperature probe - IL
shown
10.5 Side Access Panel
Undercounter freezers feature easy access for servicing, removal, and replacement of the compressor
and condenser. The compressor is accessible from the rear and the side.
Schematic
Label
F
230 V: 120657
E
230 V: 120658
R
230 V: 120659
Side access panel.
360142-D/D 53
Page 55
10.6 DoorandHinge
A
i.Series® Models
C
E
B
D
F
Hinge, hinge spring and pin assembly, and door handle with key lock.
NOTE Spring tension is controlled at the point where the pin is stopped by the side plate (C, D).
Label Description PartNumber
A Hinge, covered, edge mount 220506
B Hinge, uncovered, without spring assembly -
C Hinge, uncovered, spring and pin assembly -
D Close up, hinge spring and pin assembly -
E Door handle - Magnetic offset latch with key lock 220426
F Door key lock with key, close-up -
Not
shown
Not
shown
Door gasket (magnetic)
Door lock replacement kit
-
220439
360142-D/D 54
Page 56
11 Schematics
11.1 iPFandiLFModels;105Conguration
i.Series® Models
360142-D/D 55
Page 57
i.Series® Models
Control
Control
Monitor
360142-D/D 56
Page 58
Section III: Horizon Series™ Models
!
12 ProductConguration
WARNING To prevent tipping:
► ensure the casters (if installed) are unlocked and the door is closed before moving
the freezer.
► do not sit, lean, push or place heavy objects on upper door ledge.
12.1 InstallBatteryforBackupPower
The monitoring system has a battery system, enabling a period of continuous operation if power is lost.
NOTE ► The optional Access Control system uses an independent battery for backup power,
in the event of a power failure.
► The monitoring system will start on battery power alone. If the freezer was previously
not connected to AC power and the battery is connected, the monitoring system will
begin running on battery power.
Battery life varies by manufacturer as well as voltage level remaining. Providing full power is available,
and no battery-related alarms are active, backup power for the monitoring system is available for up to two
hours. Providing full power is available, backup power for the optional Access Control system is available
for up to 2.5 hours.
Horizon Series™ Models
CAUTION ► Before installing or replacing batteries, switch the power OFF. Disconnect the freezer
from AC power.
► When installing a replacement battery, use only a battery which meets the
manufacturer’s specications.
The the battery is located below the chamber, behind the front cover. The battery holder is located behind
an access panel.
Monitoring system backup battery. Optional Access Control backup battery (behind panel).
Battery is taped next to the battery holder. Install and connect the battery to provide monitoring system
with backup power in the event of AC power failure.
360142-D/D 57
Page 59
12.2 Schedule Defrost Events
Defrost events may be scheduled to occur at specic times.
Access to the defrost controller is available from the front of the freezer, in the pull-out components tray.
Kick plate (removed), and pull-out components tray (open).
Specify the number of defrost events to execute per day, as well as the time at which to initiate each
defrost cycle. The cycles are based on the current time settings on the defrost controller.
Horizon Series™ Models
The defrost controller features two time indicators and a time adjustment ring. The hour and minute
hands show the current time in hours and minutes. The outer ring shows the current time including AM or
PM, to the nearest 15-minute interval.
A
B
C
D
E
Defrost controller with current time set to approximately 9:30 PM.
Label Description
A PM indicator
B Current time indicator (includes AM/PM, to the nearest 15-minute interval)
C Current time indicator (hour and minutes only)
D AM indicator
E Time adjustment ring
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12.2.1 Set Current Time
1 Switch the AC ON/OFF switch OFF. Turn the Alarm Disable key switch OFF.
2 Remove the kick plate and pull out the electrical tray.
3 Rotate the time adjustment ring clockwise until the current time indicators show the current time.
4 Push the electrical tray in and replace the kick plate.
5 Switch the AC ON/OFF switch ON. Turn the Alarm Disable key switch ON.
6 Press the Mute button to disable the high temperature alarm while freezer reaches operating
temperature.
12.2.2 Set Defrost Time
► Default setting of three defrost events per day
► Default times are 12:00 AM, 8:00 AM, 4:00 PM
► Defrost events can be added or removed
► Defrost events can be scheduled for any time of day (in 15-minute intervals)
► Defrost cycle lasts 15 to 30 minutes
► Defrost events must be at least one hour apart
NOTE Three defrost cycles are recommended for consistent freezer operation.
12.2.3 Schedule a Defrost Event
► Switch defrost event switch(es) to the ON position (outside) to initiate a defrost event at that time.
► Switch defrost event switch(es) to the OFF position (inside) to cancel a defrost event at that time.
Horizon Series™ Models
1 Switch the AC ON/OFF switch OFF. Turn the Alarm Disable key switch OFF.
2 Remove the kick plate and pull out the electrical tray.
3 Add a defrost event:
► At the appropriate time mark, position the switch ON (toward the outer ring).
4 Remove a defrost event:
► At the appropriate time mark, position the switch OFF (toward the inside ring).
5 Push the electrical tray in and replace the kick plate.
6 Switch the AC ON/OFF switch ON. Turn the Alarm Disable key switch ON.
7 Press the Mute button to disable the high temperature alarm while freezer reaches operating
temperature.
Defrost controller with defrost times set to On position at 12:00 AM, 8:00 AM, and 4:00 PM.
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12.3 ExternalMonitoringDevices
!
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. 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.
NOTE Do not connect any monitoring device that exceeds the maximum load capacity.
The terminals on the remote alarm interface have the following maximum load capacity:
► 0.5 A at 125 V (AC): 1 A at 250 V (DC)
12.3.1 Connect to Remote Alarm Interface
1 Switch AC ON/OFF switch OFF. Disconnect the battery.
2 On the electrical box, locate the remote alarm terminals.
3 Connect remote alarm wires to appropriate terminals, according to requirements for your alarm
system.
4 Use a cable tie to relieve strain on alarm wires (as necessary).
5 Switch AC ON/OFF switch ON. Reconnect the battery.
6 Press the Mute button to disable the high temperature alarm while freezer reaches operating
temperature.
Horizon Series™ Models
12.4 MoveDrawers,Shelves,andBaskets
Storage features.
CAUTION ► Before moving drawers, ensure they are completely empty for safe lifting.
► Maximum basket, drawer, or shelf load is 100 lbs (46 kg).
NOTE Before moving storage components, protect stored items in freezer from extended
exposure to adverse temperature.
Removeadrawerorbasket
1 Pull drawer or basket out until it stops.
2 Tilt the front of the drawer or basket upward.
3 Pull drawer or basket free of the slides.
Installadrawerorbasket
1 Align end guides on drawer or basket with the slides.
2 Gently push drawer or basket into chamber until it stops.
3 Pull drawer or basket out until it stops; check for smooth operation.
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Remove a shelf
1 With one hand, lift front edge of the shelf from the front brackets.
2 With the other hand, reach under the shelf and bump rear edge of the shelf upward to disengage rear brackets.
Install a shelf
1 Insert shelf into chamber, placing it on brackets.
2 Gently bump rear edge of the shelf downward to engage brackets.
3 Pulling shelf forward gently; shelf should not disengage from rear brackets.
12.5 Moveslidesandbrackets
Remove Drawer Slides
1 Using a screwdriver, remove front bracket retainers.
2 Tap front brackets upward to disengage standards.
3 Remove slides from standards.
Install drawer slides
1 Insert slides into standard at appropriate height.
2 Tap front brackets downward to engage standards.
3 Using a screwdriver, install front bracket retainers.
Removeshelfbrackets
1 Using a screwdriver, remove front bracket retainers.
2 Tap front brackets upward to disengage standards.
3 Remove front brackets from standards.
Horizon Series™ Models
Installshelfbrackets
1 Insert front brackets into standard at appropriate height.
2 Tap front brackets downward to engage standards.
3 Using a screwdriver, install front bracket retainers.
12.6 Level the Freezer
NOTE ► Leveling feet are optional.
► Helmer recommends the use of leveling feet (unless casters are installed) and wall
► A bubble level may be used to ensure the freezer is level.
Leveling feet must be adjusted to provide unit cooler drainage.
Front-to-back
1 Using a wrench, raise or lower leveling feet.
2 When freezer is properly leveled, bottom of the unit cooler will slope downward from front to back
(toward the condensate drain line).
Side-to-side
1 Using a wrench, raise or lower leveling feet.
2 When freezer is properly leveled, bottom of the unit cooler will be horizontal (parallel to the oor).
and oor brackets (PN 400472-2) for stabilization. Contact Helmer Technical Service
for parts and instruction.
12.7 OptionalAdapterKitsforMedicationDispensingLocks
Contact Helmer Technical Service or your distributor for service documentation pertaining to medication
dispensing locks.
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12.8 ReverseDoorHingeandHandle
!
NOTE ► Before reversing door hinge and handle, protect stored items in freezer from
extended exposure to adverse temperature.
► Freezer must be on the oor or on an elevated work surface with enough space in
front of the freezer to lay the door face-down for disassembly.
► The door hinge and handle cannot be reversed on freezers equipped with Access
Control.
12.8.1 RemovetheDoorandHinges
1 Open the lower front control panel. Switch AC ON/OFF switch OFF. Disconnect the battery.
2 Remove four screws holding the kick panel on the cabinet. Set the kick panel aside.
Kick panel
Horizon Series™ Models
Remove
3 Remove six screws holding the access panel and cover on the cabinet. Lay the panel in front of the
cabinet, ensuring there is no strain on the power switch wires.
Remove Remove
Access panel
Access
panel cover
Remove
4 Remove plug from the access panel (on the handle-side of the freezer). Remove grommet from the
hole (on the hinge-side of the freezer). Slide the braided sleeve out of the slot (on the kick plate).
Pull plug out
Remove
Access
panel cover
Access panel
Remove
Pull grommet
out
Slide sleeve
out of slot
5 Cut the zip tie inside the cabinet.
Cut zip tie
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6 Remove the door handle assembly.
a Remove four screws holding the door handle assembly on the door.
b Set the door handle assembly aside.
Remove
Door handle assembly.
7 Remove door latch / door catch.
a Remove two screws holding the door latch plates and spacer bar on the cabinet
b Set the latch plates and spacer bar aside.
Cabinet
Horizon Series™ Models
Strike plate
Remove
2 screws
Door latch plate.
8 With the door shut, remove the cover plate from both hinges.
9 Remove the spring assembly from the lower hinge.
a Use a J-hook tool to engage the left-most hole in the spring cap and rotate the spring cap from
left to right, and hold.
b Remove the pin from the spring cap.
c Allow the spring to relax.
d Use a J-hook tool to engage any hole in the spring cap compress spring downward.
e Remove spring assembly from the lower hinge.
f Set the spring assembly aside.
NOTE ► A second person should assist by supporting the door while the hinges are removed.
► The two screws holding the hinge on the door are longer than the three screws
holding the hinge on the cabinet. The screws must be installed in the same location
when moving the hinge to the opposite side of the door.
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Horizon Series™ Models
10 Remove the lower hinge.
a Support the door.
b Remove ve screws attaching the lower hinge to the door and cabinet.
c Remove the lower hinge.
d Reverse the hinge manually (as if moving the hinge from a fully-closed to a fully-open position).
e Set the lower hinge aside.
f Continue to support the door.
11 Remove the upper hinge.
a Remove ve screws attaching the upper hinge to the door and cabinet.
b Remove the upper hinge.
c Reverse the hinge manually (as if moving the hinge from a fully-closed to a fully-open position).
d Set the upper hinge aside.
Door
Cabinet
Hinge
Remove 2
screws (long)
Shim
Remove 3
screws (short)
Hinge plate
Hinge removal (lower hinge shown with spring removed).
12 Lay the door face-down in front of the cabinet. Ensure that there is no strain on the cable(s) passing
from the cabinet to the door.
12.8.2 ReversetheCableRoutingintheDoor
The undercounter door consists of an inner frame and outer frame. The data cable is connected to the
display circuit board on the front of the door.
The length of the cable inside the door is approximately three feet. The cable follows a channel along the
top and side of the outer frame. Additional slack has been bundled in the cable.
A
B
D
C
Outer door frame (right-hinged solid door shown) and data cable.
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Horizon Series™ Models
Label Description
A Outer door frame
B Data cable (gray)
C Cable exit (corner of door)
D Additional cable slack
1 Lay the door assembly face-down on a solid work surface.
2 Remove remaining screws from both sides of the door assembly.
3 Lift the inner door frame out of the outer door frame and set aside. A J-hook tool may be used along
the bottom edge of the door assembly to lift the inner frame.
4 Remove the plug from the handle-side of the door. Set the plug aside.
Pull plug out
5 Pull the grommet out of the hole in the door. Slide the data cable out of the slot.
Slide cable
out of slot
Pull grommet
out
6 Re-route the data cable.
a Route the data cable inside the door and out through the slot in the corner opposite from where
the cable had previously exited the door.
b Cable should follow the bottom edge of the door frame, as closely as possible.
c Tape the cable to the door frame.
d Excess slack in the cable should be outside of the door.
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Horizon Series™ Models
Left: Original cable routing (right-hinged door). Right: New cable routing (left-hinged door).
7 Route the data cable out of the door.
a Slide the data cable through the slot in the door.
b Insert the door-side grommet into the hole in the door.
8 Reinstall the inner door frame inside the outer door frame. Install screws in the unused holes on the
door where hinges were originally installed.
12.8.3 ReinstalltheDoorandHinges
1 Install the hinges and hinge plates on the door.
a Hand-thread two screws through each hinge and into the door.
b Leave the screws slightly loose.
c If a shim was used on the lower hinge, transfer the shim to the new hinge location.
NOTE Ensure that the upper and lower hinges are not interchanged when moving the hinges to
the opposite side of the door.
Door
Hinge
2 screws
(long)
Hinge plate
Shim
Attach hinge to door (lower hinge shown).
NOTE A second person should assist by supporting the door while the hinges are installed.
2 Install the door on the cabinet.
a Lift the door to the cabinet.
b Align the holes in the hinges with the corresponding holes in the cabinet.
c Hand-thread three screws through each hinge and into the cabinet.
d Do not allow the weight of the door to rest on the hinges.
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Horizon Series™ Models
Cabinet
Hinge
3 screws
(short)
Attach hinge to cabinet (lower hinge shown).
3 Align the door and tighten screws.
a Support the door so the top edge of the door is level.
b Level the door using a shim if necessary.
c Tighten all screws attaching both hinges to the door and to the cabinet.
NOTE If a shim is necessary to level the door after hinge reversal, contact Helmer Technical
Service to obtain a shim.
4 Route the data cable across the front of the cabinet. Attach the cable to the zip tie holder under the
cabinet on the hinge side.
Secure cable
with zip tie
Data cable secured at the hinge-side of the cabinet after hinge reversal.
5 Install the data cable in the door.
a Slide the data cable through the slot in the access panel.
b Install the grommet in the hole.
c Install the plug in the access panel on the opposite side.
d Allow enough slack (approximately 3”) in the data cable between the door and the cabinet so the
door can pivot open and closed without straining the cable.
6 Install the access panel and cover.
7 Install the kick panel.
8 Install the door handle on the opposite side of the door.
9 Install the latch plates and spacer bar on the opposite side of the cabinet.
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10 Install the hinge spring and pin assembly.
a Close the door.
b Assemble the hinge spring assembly for the left side of the door (Figure A).
c Orient the bend in the coil toward the front of the freezer (Figure B).
d Slide the internal hex cap (with washer) on to the upper hex bolt in the lower hinge.
Washer
Internal
hex cap
Spring
Horizon Series™ Models
Pin
A
Spring cap
Bushing
B
e Use a J-hook tool in the spring cap to compress the spring upward (Figure C).
f While compressing the spring, slide the spring cap over the lower hex bolt in the lower hinge
(Figure D).
D C
g Use a J-hook tool to engage the right-most hole in the spring cap and rotate the spring cap from
right to left, and hold.
h Count four holes, starting from and including the spring cap hole closest to the end of the coil.
i Insert the pin in the fourth hole.
Rotate the spring using a J-hook tool then insert pin (left-hinged door shown).
11 Switch AC ON/OFF switch ON. Reconnect the battery.
12 Close the lower front control panel.
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13 Press the Mute button to disable the high temperature alarm while freezer reaches operating
temperature.
14 Verify the door is level and the hinges operate smoothly and the door seals tightly.
12.9 StackedUndercounterUnits
CAUTION ► For a stacked conguration, both units must have leveling feet installed.
► The back brace bars and front stabilizing brackets must be installed [PN 400821-1
(blue) or 400821-2 (stainless steel)].
► When stacking a refrigerator and freezer (104 and/or 105 models), place the heavier
unit on the bottom.
► Do not open multiple, loaded drawers or baskets at the same time.
Call Helmer or your distributor for more information on the stacking kit, and for methods to secure both
units to the wall and/or the oor.
Horizon Series™ Models
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13 Settings
Through the Horizon Series monitoring and control system, current settings may be viewed and changed.
NOTE ► Control Sensor Offset and Hysteresis settings are factory-preset and should not be
changed unless directed by Helmer Technical Service.
► Changing temperature settings affects operation of the freezer. Do not change
settings unless instructed in product documentation or by Helmer Technical Service.
13.1 Monitor and Controller Interface
A B D F G H J K L
Horizon Series™ Models
C E I
Label Description Function
A HIGH TEMP lamp Indicates when the freezer is in a high temperature alarm condition.
Also indicates high alarm temperature setpoint is being changed.
B LOW TEMP lamp Indicates when the freezer is in a low temperature alarm condition.
Also indicates low alarm temperature setpoint is being changed.
C DOOR ALARM lamp Indicates when the door is open.
D COOL lamp Indicates the compressor is running.
E SET lamp Indicates when temperature setpoint or alarm setpoint is being changed.
F Display Displays real-time temperature information, setpoints, and alarms.
G SEL button Toggles between alarm monitor and control modes.
H CONTROL lamp Indicates when the reading from the control probe is displayed.
I MONITOR lamp Indicates when the display is showing temperature readings from
the monitor probe. Also indicates when alarm setpoints are being
changed.
J UP ARROW button Increases a temperature setting.
K DOWN ARROW /
MUTE ALARM button
L SET button Allows settings to be selected, prior to changing settings.
Decreases a temperature setting. Also mutes the audible alarm for ve
minutes.
NOTE The Alarm Disable key switch disables all audible alarms. This switch does not affect
alarm lamps or signals sent through the remote alarm interface.
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13.2 DisplayMinimumandMaximumMonitorTemperatureRecordings
Horizon Series™ Models
NOTE
► This feature is standard on Horizon Series™ models with serial numbers of 2015494
or higher. Some exceptions may exist. For conrmation on your unit, please contact
Helmer Technical Service.
► Units that do not include the minimum and maximum recording feature will not display
.C or .F when entering the program mode.
The 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.
NOTE The following steps apply only to the monitor probe.
1 View minimum temperature recording.
a Press and hold the Down Arrow button for 1 second and listen for a single beep.
b 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.
2 View maximum temperature recording.
a Press and hold the Up Arrow button for 1 second and listen for a single beep.
b 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.
3 View recorded temperature timer.
NOTE
► 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).
a Press and hold either the Up or Down Arrow button for 1 second.
b While the display is ashing the HI or LO value, press and hold the SET button for 1 second.
c 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.
4 Clear minimum and maximum temperature recordings.
a Press and hold either the Up or Down Arrow button for 1 second.
b 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.
c 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.
NOTE The minimum and maximum temperature and timer will reset when:
► the unit is powered off and battery backup is not engaged, or
► after 99 hours and 59 minutes have elapsed.
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13.3 Freezer Setpoint
NOTE Default setpoint is -30.0 °C
Changethesetpointif:
► Your organization requires a chamber temperature other than -30.0 °C.
Changesetpoint.
1 On the monitoring system, press and release SEL to change to Control mode. The CONTROL lamp
will illuminate.
3 Press and hold SET to display the current temperature setpoint.
NOTE The current temperature setpoint is typically higher than the chamber temperature.
4 Hold SET and press Up Arrow or Down Arrow to set the adjustment value.
5 Release SET button; the setpoint is changed.
6 Press and release SEL to return to Monitor mode. The MONITOR lamp will illuminate.
13.4 Table of Parameters
Parameter Visual Indicator Range Default
Celsius or Fahrenheit None .C, .F
High Temperature MONITOR Lamp &
Low Temperature MONITOR Lamp &
Monitor Offset MONITOR Lamp -10.0 to 10.0 (°C)
Control Offset CONTROL Lamp -10.0 to 10.0 (°C)
Hysteresis CONTROL Lamp 0.5 to 2.5 (°C)
HIGH Lamp
LOW Lamp
-40.0 to 40.0 (°C)
-40 to 104 (°F)
-40.0 to 40.0 (°C)
-40 to 104 (°F)
-18 to 18 (°F)
-18 to 18 (°F)
1 to 5 (°F)
Horizon Series™ Models
.C
-20.0°C
-40.0°C
Varies
Varies
2.0°C
13.4.1 View Alarm Setpoints and Offset 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 to scroll through the parameters and view settings. 4 Hold Up and Down Arrows simultaneously for 3 seconds to exit program mode. 5 The LED Display will show current monitor temperature.
13.4.2 Temperature Units
NOTE If temperature units are changed, the temperature setpoints, offsets 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 parameter.
4 Release SET button. The new setting is saved.
5 Press and hold Up and Down Arrows simultaneously for 3 seconds to exit program mode.
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13.5 Temperature Alarm Setpoints
Temperature alarm setpoints specify the temperature at which an alarm activates.
13.5.1 HighTemperatureAlarmSetpoint
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 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.
13.5.2 Low Temperature Alarm Setpoint 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 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.
13.6 Temperature Calibration Setpoints
Temperature calibration setpoints indicate an acceptable margin of error between the actual temperature
value and the desired temperature value.
Horizon Series™ Models
13.6.1 Monitor Offset
► Value is factory-set to match a calibrated reference thermometer.
NOTE ► Ensure the product simulation bottle is full of solution.
Obtain:
► Calibrated reference thermometer; independent and traceable per national standards.
► Tape or wire ties to attach thermometer to monitor probe.
Measure the chamber temperature:
1 Remove the monitor probe from the probe bottle and unscrew the cap.
2 Attach the thermometer to the probe, and immerse at least 2” (50 mm) in bottle.
3 Close the door and allow the chamber temperature to stabilize for 10 minutes.
4 Note the temperature on the calibrated reference thermometer and compare to the chamber
temperature displayed on the monitor.
5 Adjust the monitor offset value higher or lower to reect the difference between the chamber temperature
displayed on the monitor and the temperature reading from the calibrated reference thermometer.
6 Remove thermometer from the probe.
7 Replace bottle cap, ensuring a tight t.
8 Place probe in bottle, immersing at least 2” (50 mm).
► Probes in the bottle are connected to the monitoring system and sense chamber
temperature. These probes do not affect freezer setpoint.
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Enter the new offset value:
1 Press and hold the Up and Down Arrows simultaneously for 3 seconds to enter program mode.
2 The display will show .C or .F to indicate Celsius or Fahrenheit.
3 Press SEL until only the MONITOR lamp ashes.
4 Hold SET, then press Up or Down Arrow to change the monitor offset.
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.
13.6.2 Control Sensor Offset
► Factory-preset. Varies for each freezer.
Determine control sensor offset:
NOTE ► Control Sensor Offset is factory-preset and should not be changed. Contact Helmer
Technical Service for instructions regarding changing the Control Sensor Offset.
► Steps in Item 13.6.1 must be performed to ensure the monitor display is calibrated and
accurate prior to adjusting the Control Sensor Offset.
1 View and record the Freezer Setpoint. (Reference Section III, Item 13.3)
2 Allow the unit to run with calibrated monitor temperature for several compressor cycles, and record
the average monitor temperature .
3 View and record the current Control Offset value.
4 Subtract the Freezer Setpoint from the average monitor temperature and record the difference.
5 Add the current Control Offset value to the recorded difference determined in the previous step to
establish the new Control Offset value.
Horizon Series™ Models
EXAMPLE 1 Freezer Setpoint is -30.0
Enter the new offset value:
1 Press and hold the Up and Down Arrows simultaneously for 3 seconds to enter program mode.
2 The Display will show .C or .F to indicate Celsius or Fahrenheit.
3 Press SEL until only the CONTROL lamp ashes.
NOTE ► Ensure Control Sensor Offset is being changed, and not Hysteresis.
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.
13.6.3 Hysteresis
► Allowable temperature variance on each side of the freezer setpoint.
NOTE Hysteresis is factory-preset and should not be changed. Contact Helmer Technical
2 Average monitor temperature is -31.2
3 Current Control Offset is 0.3
4 Subtract: -31.2 - (-30.0) = -1.2; difference between average temperature and setpoint
5 Add 0.3 + (-1.2) = -0.9; new Control Offset value
► Control Sensor Offset and Hysteresis have the same visual indicator.
Service for instructions regarding changing the Hysteresis value.
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13.7 Test Alarms
Test alarms to ensure they are working correctly. The freezer has alarms for chamber temperature, power
failure, and door open (time).
NOTE Before testing alarms, protect items in freezer from extended exposure to adverse
temperature.
13.7.1 Chamber Temperature Alarm
Obtain:
► glass with 4 oz. (120 mL) of product simulation solution (1:1 ratio of water to propylene glycol or
equivalent low-temperature uid).
NOTE Temperature probes are fragile; handle with care.
Testthehighalarm:
1 Identify setting for high alarm setpoint.
2 Place the glass of product simulation solution in the freezer.
3 When the product simulation solution has stabilized at the chamber temperature, remove the solution
from the freezer.
4 Remove the monitor probe from the probe bottle.
5 Place the probe in the product simulation solution, observe the temperature on the monitoring system
display at which the high temperature alarm sounds.
6 Compare the temperature at which the alarm sounds to the high alarm setpoint. If values do not
match, refer to Section III, Item 15 (Troubleshooting).
7 Remove probe from product simulation solution.
8 Place monitor probe in probe bottle, immersing it at least 2” (50 mm).
Horizon Series™ Models
13.7.2 Power Failure Alarm
NOTE During a power failure, the battery should continue to provide power to the monitoring
system.
1 Switch AC ON/OFF switch OFF. Audible power failure alarm will activate immediately and “PoFF”
(power off) will appear on the display.
2 Switch AC ON/OFF switch ON. Audible power failure alarm will cease and “PoFF” will clear from the
display.
13.7.3 Door Open Alarm
► Factory-set to three minutes.
► Value can not be changed.
Test the alarm:
1 Open freezer door and note the time.
2 After three minutes, audible alarm will activate and DOOR ALARM lamp will ash.
3 Close freezer door. Audible door open alarm will cease and DOOR ALARM lamp will stop ashing.
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14 Maintenance
!
NOTE ► Refer to the operation manual for the preventive maintenance schedule.
► Before performing maintenance, protect items in freezer from extended exposure to
adverse temperature.
► Allow freezer temperature to stabilize at setpoint after performing service or after
extended door opening.
14.1 RechargeRefrigerant
CAUTION ► Review all safety instructions prior to recharging refrigerant. Refer to Section I, Item
2 (Safety).
► Maintenance should only be performed by trained refrigeration technicians.
NOTE Use only non-CFC R-404A refrigerant.
Full initial refrigerant charge varies by model and power requirements, which can be found on the product
specication label.
Horizon Series™ Models
Model
105 model 115 V 11.0 oz (312 g)
Obtain:
► Refrigerant
► Calibrated pressure gauge (0 psi to 220 psi (0 kPa to 1520 kPa))
Addrefrigerant:
1 Attach pressure gauge to the ttings on the refrigeration lines.
2 Monitor the low side (suction) pressure through a full compressor cycle.
3 Measure the pressure at the end of the next cycle, immediately before the compressor stops.
NOTE Pressure varies depending on ambient air temperature.
4 Add refrigerant. Check the pressure on the high side and the low side.
► Low side = 5 psi to 7 psi (34 kPa to 48 kPa)
► High side = 180 psi to 220 psi (1241 kPa to 1517 kPa)
5 Remove pressure gauge.
14.2 CheckMonitoringSystemBattery
The monitoring system does not indicate the charge level of the battery. Regularly test the battery.
Replace battery if the test fails or if the battery has been in use for one year.
Power
Requirements
230 V 18.5 oz (524 g)
InitialCharge
Test the battery:
1 Switch the AC ON/OFF switch OFF.
a Display should continue to display information.
b If the display is blank, replace battery.
2 Switch AC ON/OFF switch ON.
NOTE Use a battery which meets manufacturer’s specications.
360142-D/D 76
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14.3 CheckOptionalAccessControlSystemBattery
!
During an AC power failure, the Access Control backup battery provides backup power to power the
magnetic Access Control lock. Test the Access Control backup battery to ensure it is working properly.
Checkthebattery:
1 Ensure Access Control battery key switch is switched ON.
2 Switch AC ON/OFF switch OFF.
3 Verify “PoFF” (power failure) message is displayed.
4 Attempt to open the cabinet door.
► If the door remains locked, the battery is functional.
► If the door does not remain locked, replace the battery.
4 Switch AC ON/OFF switch ON.
14.4 Clean the Freezer
14.4.1 Condenser Grill
CAUTION Disconnect freezer from AC power when cleaning condenser grill.
In environments where freezer is exposed to excessive lint or dust, condenser grill may require cleaning
more frequently than stated in preventive maintenance schedule.
Horizon Series™ Models
Clean the condenser grill using a soft brush and a vacuum cleaner.
14.4.2 Exterior
Clean exterior surfaces with soft cotton cloth and non-abrasive liquid cleaner.
14.4.3 Interior
Clean painted surfaces with mild detergent. Clean stainless steel surfaces with a general-purpose
laboratory cleaner suitable for stainless steel.
14.4.4 CleanandRellProbeBottle
Obtain:
► Fresh water-bleach solution (not provided)
► 1:9 ratio of bleach to water
► Bleach is 5% solution of commercial sodium hypochlorite (NaOCl)
► Equivalent oxidizing cleaner/disinfectant approved by your organization may be substituted
► 4 oz (120 mL) of product simulation solution per bottle
► Solution is a 1:1 ratio of water to propylene glycol (or equivalent low-temperature uid)
Cleanandrellbottle:
1 Remove probe from bottle.
2 Remove bottle from bracket.
3 Clean bottle with water-bleach solution.
4 Fill bottle with 4 oz (120 mL) of product simulation solution.
5 Cap bottle tightly to minimize evaporation.
6 Place bottle in bracket.
7 Replace probe, immersing at least 2” (50 mm).
360142-D/D 77
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14.5 Unit Cooler Cover Removal and Installation
!
If unit cooler cover is not removed as detailed in this procedure the drain port may be damaged. Improper
drainage may result in excessive icing and freezer’s inability to maintain temperature.
Required tools:
► 5/16” socket wrench
► Tool to push putty away from the drain tube
A
B
Horizon Series™ Models
C
D
E
F
G
H
Drain line, fan, and heater components.
Label Description
A Unit cooler cover
B Drain port
C Drain fan
D Fan tube
E Heating element
F Heater wires
G Protective cover
H Drain tube
14.5.1 Remove the Unit Cooler Cover
1 Switch AC ON/OFF switch OFF. Disconnect the battery.
2 Remove the rear protective cover (G) on the rear of the cabinet.
a Loosen four screws
b Slide the cover up and remove
c Cut the wire ties securing the drain line to the cabinet
3 On the back of the cabinet, peel the putty back to expose the drain tube (H) and drain heater (E).
CAUTION The condensate evaporator and water evaporation tray are hot.
4 Inside the cabinet, remove the putty around the drain tube.
5 Remove the wire ties securing the heater wires (F) to the cabinet. Verify the heating element is cool.
6 Remove the drain heater from the drain tube.
360142-D/D 78
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7 Remove the drain tube (H) by pulling it downward. The drain tube should separate from the fan tube
(D) at the 90° elbow, leaving the fan tube (D) attached to the fan (C).
a The section of the drain tube inside the cabinet should separate from unit cooler drain port (B).
b Gently twist the drain tube from left to right to separate it from the unit cooler drain port.
c Pivot the drain tube upward then remove it from the cabinet.
8 Remove top drawer, basket, or shelf from the chamber.
9 Remove the unit cooler cover (A).
a Hold unit cooler cover in place to prevent it from dropping.
b Use the socket wrench to remove four screws securing the unit cooler cover.
c Carefully lower unit cooler cover to avoid damage to the fan wiring.
14.5.2 Install the Unit Cooler Cover
1 Verify unit cooler wiring is connected and routed correctly.
a Wiring should be routed above copper tube inside the unit cooler.
b Reconnect wires if they have separated.
2 Attach unit cooler cover.
a Lift unit cooler cover into place.
b Front edge of the cover should be behind the unit cooler case.
c Use the socket wrench to install four screws to secure the unit cooler cover.
3 Insert the drain tube through hole in the cabinet.
a Push drain tube upward at an angle, toward the unit cooler drain port.
b Picot the drain tube downward then push the tube upward.
c In the chamber, push the drain tube onto unit cooler drain port.
4 Attach the drain tube to the fan tube.
5 Insert the drain line heater in the drain tube.
a Insert the heater at an upward angle.
b The black heating element should no longer be visible.
8 Reinstall top drawer, basket, or shelf if previously removed.
9 Reattach the drain line heater wires to the cabinet.
10 On the back of the cabinet, press putty around the drain hose and partially into the hole.
11 Install the protective cover on the rear of the cabinet.
12 Switch AC ON/OFF switch ON. Reconnect the battery.
13 Press the Mute button to disable the high temperature alarm while freezer reaches operating
temperature.
Horizon Series™ Models
360142-D/D 79
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15 Troubleshooting
!
CAUTION Review all safety instructions prior to troubleshooting. Refer to Section I, Item 2 (Safety).
15.1 General Operation Problems
Problem Possible Cause Action
A drawer or basket
does not slide easily.
The door does not
open easily.
Debris in the drawer
slides.
Drawer or basket
slides are not
lubricated.
Ice buildup in the
drawer slides.
Drawer or basket is
misaligned or not
level.
Drawer or basket slide
is faulty.
Debris in the hinges. ► Conrm the hinges are free of debris. Clean the
Hinge is faulty. ► Conrm the hinge spring or pin is not damaged.
Door hinges are not
lubricated.
Lower hinge spring
and/or pin may be
bent or faulty.
Horizon Series™ Models
► Pull the drawer or basket out and conrm the
slides are free of debris. Clean if necessary.
► Using a multi-purpose grease, lubricate the
bearings in the slides.
► Pull the drawer or basket out and conrm the
slides are free of ice. De-ice if necessary.
► Conrm both slides for the drawer or basket are
mounted at the same height.
► Conrm the slide is operating correctly. Replace if
necessary.
hinges if necessary.
Replace entire hinge (lower hinge only), if
necessary.
► Using a general-purpose grease, lubricate the
pivots in the hinges.
► Replace the entire lower hinge spring and pin
assembly.
360142-D/D 80
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15.2 Chamber Temperature Problems
Problem Possible Cause Action
“Prob” appears on
the display, but the
chamber temperature
is set correctly.
Connections for the
monitor probe are
loose.
Monitor probe wiring
is an open circuit.
A component is faulty. ► Contact Helmer Technical Service.
An error code displays
on the monitor.
A component is
faulty or internal
connections are loose.
The chamber
temperature meets
Temperature alarm
setpoint was changed.
an alarm condition,
but the appropriate
temperature alarm is
not active.
The compressor runs
continuously.
Freezer setpoint is set
too low.
Control probe in the
unit cooler is faulty.
Temperature monitor/
control board is faulty.
Compressor starting
relay is faulty.
Defrost timer is faulty. ► Replace the defrost timer.
Horizon Series™ Models
► Check the probe connections. Secure the
connections if necessary.
► Check the continuity of the probe wiring and
connections. Secure the connections or replace
the probe if necessary.
► Contact Helmer Technical Service.
► Check the current setpoints for the temperature
alarms. Change the setpoints if necessary.
► Conrm the setpoint is set within the operating
range and change it if necessary.
► Conrm the control probe is providing resistance in
the range of 98 Ω to 110 Ω. Replace the probe if
necessary.
► Conrm the temperature controller or monitor/
control board is operating correctly. Replace it if
necessary.
► Conrm the relay is operating correctly. Replace
the relay if necessary.
360142-D/D 81
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Problem Possible Cause Action
The chamber
temperature does not
Monitor/control board
is faulty.
stabilize at the freezer
setpoint.
Compressor starting
relay is faulty.
Temperature monitor/
controller board is
faulty.
Condensing unit fan is
not running.
Unit cooler fan is not
running.
Compressor motor
has seized.
Control probe is out of
calibration.
Control probe is faulty. ► Conrm the probe is providing resistance in the
Refrigerant level is too
low.
Probe bottle is empty. ► Rell the probe bottle.
Condenser grill is
dirty.
Air circulation at the
top of the chamber is
not adequate.
Ambient air
temperature around
the freezer is too high.
A component is
faulty or internal
connections are loose.
Horizon Series™ Models
► Conrm the temperature controller or monitor/
control board is operating correctly. Replace it if
necessary.
► Conrm the relay is operating correctly. Replace
the relay if necessary.
► Conrm the temperature monitor/controller board
is operating correctly. Replace the board if
necessary.
► Check the condensing unit fan connections.
Replace the fan motor if necessary.
► Check the voltage to the fan when door switch is
activated. Replace the fan motor or door switch if
necessary.
► Replace the compressor.
► Conrm the probe is providing accurate
temperature readings.
range of 98 Ω to 110 Ω. Replace the probe if
necessary.
► Check the refrigeration lines for leaks and repair
them if necessary. Check the refrigerant level.
Recharge the refrigerant if necessary.
► Check the condenser grill. Clean the grill if
necessary.
► Check if there are any items that may obstruct air
ow and remove them if necessary.
► Conrm the freezer is placed appropriately.
► Contact Helmer Technical Service.
360142-D/D 82
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15.3 Alarm Activation Problems
Problem Possible Cause Action
The freezer is in an
Alarm system is faulty. ► Conrm the circuit board and line connections are
alarm condition, but
the appropriate alarm
is not audible or
active.
Monitor/control board
is faulty.
Alarm buzzer is faulty. ► Replace the alarm buzzer.
A component is
faulty or internal
connections are loose.
Alarm Disable key is
in the OFF position.
Audible alarms are
muted.
Alarm setpoint was
changed.
The High Temperature
alarm activates when
the door is opened,
then clears shortly
after the door is
closed.
Connections for the
monitor probe are
loose.
Monitor probe is
faulty.
Unit cooler fan
continues to run while
the door is open.
Probe bottle is empty. ► Check the level of product simulation solution in
High temperature
alarm setpoint is set
too low.
A component is
faulty or internal
connections are loose.
The freezer is
connected to power,
but the AC Power
Outlet connection is
faulty.
Power cord is faulty. ► Conrm the power cord is connected securely.
Failure alarm is active.
ON/OFF AC power
switch located inside
the front lower panel
is faulty.
ON/OFF AC power
switch is OFF.
A component is
faulty or internal
connections are loose.
Circuit breaker is
tripped.
Horizon Series™ Models
functioning correctly.
► Replace parts with those included in the control
board kit, or replace the monitor/control board.
► Contact Helmer Technical Service.
► Turn the Alarm Disable key to the ON position.
► Verify that audible alarms are not muted.
► Check the current setpoints for the alarms.
► Check the monitor probe connections. Secure the
connections if necessary.
► Test the probe. Replace the probe if necessary.
► Test the door switch and unit cooler fan
connections. Secure the connections if necessary.
Replace the door switch or fan motor if necessary.
the bottle. Clean and rell bottle if necessary.
► Check the setpoint. Change the setpoint if
necessary.
► Contact Helmer Technical Service.
► Verify power at the outlet. Repair the original
outlet or connect to a different outlet if necessary.
Secure the power cord if necessary.
► Replace the ON/OFF AC power switch.
► Turn the ON/OFF AC power switch to the ON
position.
► Contact Helmer Technical Service.
► Reset or replace the circuit breaker.
360142-D/D 83
Page 85
Problem Possible Cause Action
The Door Open
alarm is activating
Door is not closing
completely.
sporadically.
Door is closing but not
sealing completely.
Connections for the
door switch are faulty.
Door switch is faulty. ► Replace the door switch.
Monitor/control board
is faulty.
A component is
faulty or internal
connections are loose.
All alarms are
Alarm system is faulty. ► Conrm the circuit board and line connections are
activating sporadically.
Monitor/control board
is faulty.
A component is
faulty or internal
connections are loose.
Compressor is
overheating due to
lack of airow.
Refrigerant level is too
low.
Condenser probe is
not calibrated.
An alarm activated,
but the temperature
recorded at activation
does not match the
alarm setpoint.
Monitor settings are
not calibrated.
Temperature changed
slightly around the
time of activation.
Horizon Series™ Models
► Clean hinges if debris is present.
► Conrm door is aligned.
► Conrm hinge spring and/or pin are not damaged.
Replace hinge (lower only) if necessary.
► Conrm the door gasket seals completely.
Replace the door gasket if necessary.
► Test the switch connections. Secure the
connections if necessary.
► Replace parts with those included in the control
board kit, or replace the monitor/control board.
► Contact Helmer Technical Service.
functioning correctly.
► Replace parts with those included in the control
board kit, or replace the monitor/control board.
► Contact Helmer Technical Service.
► Check the condenser grill. Clean if necessary.
► Conrm freezer location meets requirements.
► Check refrigeration lines for leaks and repair if
necessary. Check the refrigerant level. Recharge
refrigerant if necessary.
► Contact a qualied service technician to conrm
the condenser probe is reading correctly and to
calibrate the probe if necessary.
► Conrm the monitor probe is reading correctly.
Calibrate the probe if necessary.
► No action necessary.
360142-D/D 84
Page 86
15.4 CondensationandIcingProblems
Problem Possible Cause Action
There is excessive
water in the water
Humid air is entering
the chamber
evaporation tray
inside the lower
compartment in the
back of the unit.
There is excessive ice
in the chamber.
Humid air is entering
the chamber.
Unit cooler drain
line is damaged or
restricted.
Drain line is plugged. ► Conrm the drain tube is free of debris. Remove
External drain fan is
faulty.
There is excessive
moisture on the doors.
Humid air is entering
the chamber.
Relative humidity
around freezer is too
high.
After a defrost cycle,
no water ows into
the water evaporation
tray.
Not enough time has
elapsed since the end
of the defrost cycle.
Drain line is plugged. ► Conrm the drain tube is free of debris. Remove
Drain line heater is
faulty.
Defrost heater on the
evaporator in the unit
cooler is not working.
Horizon Series™ Models
► Conrm the freezer is level, and the door is
aligned, closing tightly, and sealing correctly.
Correct issues as necessary.
► Conrm the freezer is level, and the door is
aligned, closing tightly, and sealing correctly.
Correct issues as necessary.
► Conrm the unit cooler drain line is free of debris
and is not restricted. Remove debris if necessary.
debris if necessary.
► Conrm the external drain fan is running. Hold a
piece of paper in front of the fan and conrm that
the paper is being drawn toward the freezer.
► Conrm the connections are secure. Tighten
connections if necessary.
► Replace the drain line fan if necessary.
► Conrm the freezer is level, and the door is
aligned, closing tightly, and sealing correctly.
► Conrm freezer location meets requirements.
► Allow approximately 20 minutes after the end
of the defrost cycle to check for water in the
evaporation tray.
debris if necessary.
► Conrm the drain line heater is warm to the touch.
Contact Helmer Technical Service to resolve
issues as necessary.
► Check for ice buildup on the evaporator by looking
through the fan grill with a ashlight. If there is
signicant ice buildup inside or behind the unit
cooler, initiate a defrost cycle of the freezer.
360142-D/D 85
Page 87
16 Parts
NOTE ► Before replacing parts, protect items in freezer from extended exposure to adverse
temperature.
► Allow freezer temperature to stabilize at setpoint after replacing parts or after
extended door opening.
16.1 Front
16.1.1 Control System Display
Horizon Series™ Models
A
Top: Display with touchpad. Bottom: Display board.
Label Description PartNumber
A Touchpad / display board assembly 400838-1 HI
Not
shown
NOTE The display board is sensitive to static electricity and can be damaged by electrostatic
Interface cable Without Access
Control: 800032-1
discharge. Use proper ESD precautions when handling the board.
Schematic
Label
HL
360142-D/D 86
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16.1.2 ControlandMonitoring
A B C
Horizon Series™ Models
Label Description PartNumber
A Horizon Series monitoring and control system - -
B Temperature chart recorder (standard on plasma freezer
model, optional on laboratory model)
C Chart paper (52 sheets) 220419 -
Not
Chart recorder backup battery 120218 -
shown
16.1.3 Lower Panel
A B C D
Lower panel features.
Schematic
Label
500613-1 -
Label Description PartNumber
Schematic
Label
A Monitoring system backup battery 120399 HH
B Alarm disable key switch 120227 HD
C Circuit breakers (230 V models only) 120288 B
D ON/OFF AC power switch 120478 C
360142-D/D 87
Page 89
16.1.4 Access Control Option
ILF105
A
Access Control features (HPF105 model shown).
Horizon Series™ Models
B
C
D
E
Label Description PartNumber
16.2 Rear
A
B
C
D
E
Schematic
Label
A Door handle (includes manual keyed lock) 322000-1 -
B Keypad 800007-1 HM
C Magnetic lock assembly (includes magnet and handle) 800139-1 AXb
D Backup battery key switch 401220-1 AXa
E Backup battery (behind battery cover) 120628 AXe
G
REF
SN
Version D
www.helmerinc.com
H
2000000
K
L
I
F
J
Rear features.
360142-D/D 88
Page 90
Horizon Series™ Models
Label Description PartNumber
A Nut anges for brace bars used in stacking
- -
undercounter units
B Rear access port - -
C Drain line fan 115 V: 400909-1
230 V: 400909-2
D Drain line heater 115 V: 120590
230 V: 120485
E Drain line assembly 400910-1 -
F Power connector - -
G Rear cover 321184-1 -
H Remote alarm contacts - -
I Power cable (with connector) North American models
120 V: 120630
230 V: 120631
European models
230 V: 120156
Chinese models
203 V: 120547
Saudi Arabian models
230 V: 120641
J Condensate evaporator tray - -
K Compressor 115 V: 800012-1
230 V 50 Hz: 800104-1
230 V 60 Hz: 800105-1
L Condenser fan motor 115 V: 120608
230 V 50 Hz: 120660
230 V 60 Hz: 120661
Not
shown
Cover for communication ports and remote alarm
contacts
- -
Schematic
Label
Q
T
A
J
K
16.3 Electrical Tray
Kick plate (removed), and pull-out components tray (open).
360142-D/D 89
Page 91
!
CAUTION Disconnect the freezer from AC power before accessing the electrical tray.
16.3.1 Electrical Tray Components
A
B
C
D
Horizon Series™ Models
E
Electrical tray features.
Label Description PartNumber
A Compressor relay 115 V: 120426
230 V 50 Hz: 120669
230 V 60 Hz: 120671
B Temperature control transformer 115 V: 401097-1
230 V: 401098-1
C Control/monitor board 800006-1 HA
D Defrost timer 800015-1 HF
E Alarm buzzer 120160 HE
Not
shown
Not
shown
NOTE The control board is sensitive to static electricity and can be damaged by electrostatic
12 V DC power supply for Access Control (optional) 800035-1 HN
Power line lter 115 V: 120299
230 V: 120677
discharge. Use proper ESD precautions when handling the board.
Schematic
Label
L
HO
D
360142-D/D 90
Page 92
16.4 Interior
A
B
C
D
Interior features.
Horizon Series™ Models
E
F
G
H
I
J
Label Description PartNumber
Schematic
A Door Stainless steel without Access Control: 800064-2
Powder coated with Access Control: 800062-1
Powder coated without Access Control: 800064-1
B Drawer (plasma freezer
400584-3 -
model)
C Door switch 120380 M
D Mullion heater (behind strike
plates)
115 V: 800081-1
230 V: 800106-1
E Roll-out basket (optional) 400890-3 -
F Standard for shelf, drawer,
321173-1 -
or roll out basket
G Monitor probe 800029-1 HC
H Drawer slide for drawer or
400753-2 -
roll out basket
I Probe bottle and propylene
400922-1
glycol kit
J Shelf (laboratory / pharmacy
400814-1 -
model)
Not
shown
Optional adapter kit for
medication dispensing lock
Call Helmer or your distributor for specic
information
Label
-
-
-
360142-D/D 91
Page 93
16.4.1 Unit Cooler
Left: Unit cooler with fan guard. Middle: Unit cooler fan. Right: Temperature control probe.
Horizon Series™ Models
A B C D E F
Label Description PartNumber
Schematic
A Unit cooler assembly 115 V: 120592
230 V: 120657
B Fan guard - -
C Unit cooler fan motor 115 V: 120540
230 V: 120658
D Control probe 800028-1 HB
E Defrost heater 115 V: 120633
230 V: 120659
F Defrost heater limit thermostat 800014-1 S
Not
Fan delay/defrost termination thermostat 800085-1 HJ
shown
Label
F
E
R
360142-D/D 92
Page 94
16.5 DoorandHinge
A
Horizon Series™ Models
C
E
B
Hinge, hinge spring and pin assembly, and door handle with key lock.
NOTE Spring tension is controlled at the point where the pin is stopped by the side plate (C, D).
Label Description PartNumber
A Hinge, covered, edge mount 220506
B Hinge, uncovered, without spring assembly -
C Hinge, uncovered, spring and pin assembly -
D Close up, hinge spring and pin assembly -
E Door handle - Magnetic offset latch with key lock 220426
F Door key lock with key, close-up -
Not
shown
Not
shown
Door gasket (magnetic) -
Door lock replacement kit 220439
D
F
360142-D/D 93
Page 95
16.6 Side Access Panel
Undercounter freezers feature easy access for servicing, removal, and replacement of the compressor
and condenser. The compressor is accessible from the rear and the side.
Side access panel.
Horizon Series™ Models
360142-D/D 94
Page 96
17 Schematics
17.1 HPFandHLFModels;105Conguration(WithoutAccessControl)
MONITOR
Horizon Series™ Models
360142-D/D 95
Page 97
17.1 HPFandHLFModels;105Conguration(WithAccessControl)
MONITOR
Horizon Series™ Models
ENDOFMANUAL
360142-D/D 96
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Page 99
HELMER SCIENTIFIC
14395 Bergen Boulevard
Noblesville, IN 46060 USA
Phone +1 (317) 773-9073
Fax +1 (317) 773-9082
www.helmerinc.com
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