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Helmer Scientific i.Series

Ultra-Low Freezer

Service and Maintenance Manual

360173-A/C

7.3

Electrical Panel

CAUTION

• Disconnect the freezer from AC power before removing the access panel.
• Avoid sharp edges when working inside the electrical compartment.

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 control board.

Label

Description

Part #

Label

Description

Part #

i.C³ control board

800167-1

High stage compressor relay

800170-1

Power supply board

800168-1

Power management module (optional)

800194-1

Low stage compressor relay

800170-1

Monitoring system/Access Control back-up battery

800174-1

Summary of Contents for i.series

Page 1: ...Ultra Low Freezer Service and Maintenance Manual i Series 360173 A C i Series iUF118 iUF126 i Series iUF116 iUF124...

Page 2: ...nded as a guide to provide the operator with necessary instructions on the proper use and maintenance of certain Helmer Scientific products Any failure to follow the instructions as described could re...

Page 3: ...3 3 Alarm Conditions 12 3 4 Settings 13 3 5 Sensor Calibration 16 4 Maintenance 20 4 1 Alarm Tests 21 4 2 Upgrade System Firmware 23 4 3 Test and Replace Back up Battery 23 4 4 Defrost Ultra Low Free...

Page 4: ...des useful information regarding a procedure or operating technique when using Helmer Scientific products NOTICE Advises the user against initiating an action or creating a situation which could resul...

Page 5: ...by standards literature or good laboratory practices Use manufacturer supplied power cord only Do not drill holes in the cabinet or door Drilling holes may damage the insulation in models equipped wi...

Page 6: ...using torque wrench and tighten to 78 8 in lbs 9 Repeat steps 1 8 for low stage compressor 10 Place rear panel over refrigeration compartment and align holes in panel with threaded holes in freezer 1...

Page 7: ...l begin running on battery power 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 deplet...

Page 8: ...used to install tubing for an optional field installed CO2 LN2 back up refrigeration system Install Additional Sensor 1 Remove the plastic plugs on the outside and inside of the cabinet 2 Use a screwd...

Page 9: ...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...

Page 10: ...up refrigeration system door switch along the handle side of the door This will prevent the door switch from interfering with the vacuum port located near the top of the door External sensors for the...

Page 11: ...ng Guidelines When loading your freezer take care to observe the following guidelines Never load freezer beyond capacity Always store items within shelves Shelves Remove Shelf 1 Using both hands lift...

Page 12: ...two minutes on most screens other than those used to enter a password Home Screen Temperature Graph Screensaver 3 2 Home Screen Functions Note Refer to the i C3 User Guide for options available on al...

Page 13: ...nsor Failure Ambient Temperature A V R Refrigeration System High Stage Compressor Temperature A V R Sensor Failure High Stage Compressor Temperature A V R Sensor Failure High Stage Condenser Temperatu...

Page 14: ...time enter factory default password of 1234 Default chamber temperature setpoint is 80 C The lowest setpoint that can be set is 86 C Default values for general settings alarm settings and display set...

Page 15: ...ettings 2 Enter the Settings password 3 Touch minus or plus on the Temperature Setpoint spin box Delay on Start Up Compressor start up is delayed to allow the i C3 monitoring and control system to sta...

Page 16: ...eached CO2 LN2 Active CO2 LN2 back up refrigeration system has been activated Low Battery Rechargeable battery voltage is low No Battery Rechargeable battery voltage is too low or battery is disconnec...

Page 17: ...ings are factory preset and should not be changed unless directed by Helmer Technical Service Primary Monitor Control Probe Verify primary monitor control probe is reading chamber temperature correctl...

Page 18: ...d should be verified on an annual basis Calibrate when required or as dictated by facility standard operating procedures The ambient temperature probe is 100 platinum RTD Ensure the independent thermo...

Page 19: ...ue 0 C 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 H...

Page 20: ...r to cancel Edit Factory Settings Several of the i C3 screens and functions are configured at the factory The screens and functions listed below are set at the factory and may be changed at the direct...

Page 21: ...he Door Open alarm Inspect electrical components and wiring terminals in the electrical box for discoloration Contact Helmer Technical Service if any discoloration is found Inspect and clean the conde...

Page 22: ...gs and record the high alarm setting 2 Move contents within the freezer to gain access to the primary monitor probe 3 Using a heat gun or similar auxiliary heat source use low setting if available app...

Page 23: ...n freezer door The door open alarm will activate immediately 4 Close freezer door The door open alarm will clear and audible alarm will cease 5 Touch the minus or plus on the Door Open Time spin box t...

Page 24: ...the plus on the Low Ambient Time Delay setting spin box to return to the original setting Non configurable Temperature Alarms Some temperature alarms are not user configurable As such the alarm setpo...

Page 25: ...the freezer s ability to maintain temperature If the freezer door or interior doors do not operate correctly or if the freezer cannot maintain the chamber setpoint temperature defrost the chamber Def...

Page 26: ...switch OFF switch AC ON OFF switch OFF and disconnect the AC power cord from the power receptacle and remove from freezer 3 Move the freezer to a location where water can be captured as the chamber th...

Page 27: ...base Pivot the top of the grill toward the freezer until the magnets engage Condenser Filter In environments where freezer is exposed to excessive lint or dust the condenser filter may require cleani...

Page 28: ...tem in Emergency Mode to preserve the inventory stored in the freezer Notes The Emergency Mode alarm will be displayed on the Home screen only If the Emergency Mode alarm is active contact Helmer Tech...

Page 29: ...alipers 1 Verify door gasket is outside of the desired gap of 0 46 to 0 52 12mm to 13mm measured between the door plastic mullion and the cabinet plastic mullion 2 Using a 2 Phillips screwdriver remov...

Page 30: ...oosen the adjustment screw in the hinge until the right edge of the door is flush with the right side of the cabinet 4 While holding the adjustment screw with a 20 Torx driver tighten the jam nut with...

Page 31: ...n installed with proper clearances Check that ambient temperature is in the acceptable range Check the air filter and condenser face and clean or replace as needed Check condenser face clean as needed...

Page 32: ...if necessary Confirm the sensor is providing resistance in the range of 73 to 110 Replace the sensor if resistance is outside of specified range Check the CP performance by utilizing jumper at J11 Pla...

Page 33: ...and start components High Stage running Low stage not running Check cascade temperature touch i C3 Settings enter password Device Status Cascade has to reach 35 C before low stage will start Did casca...

Page 34: ...int and change it if necessary Connections for the chamber temperature sensor are loose Check the sensor wire connection to the control board and secure the connection if necessary A component is faul...

Page 35: ...utside of specified range The No Battery alarm is activating sporadically Monitoring system back up battery voltage is low Replace the monitoring system back up battery Power supply board voltage is i...

Page 36: ...l solenoid assembly Not Shown Front bezel without chart recorder door iUF116 800191 1 C Latch roller iUF118 800190 1 D Door handle bushing iUF124 800193 1 E Padlock hasp iUF126 800192 1 F AC ON OFF sw...

Page 37: ...e top three compartments of the iUF118 and iUF126 models are 9 25 tall All other inner doors are 12 25 tall iUF116 iUF118 12 25 800183 1 E Inner door catch 800186 1 iUF118 9 25 800183 2 F Inner door m...

Page 38: ...The i C control board is sensitive to static electricity and can be damaged by electrostatic discharge Use proper ESD precautions when handling the control board Label Description Part Label Descripti...

Page 39: ...tank balancing line low stage 800164 1 U AC power connector F Dryer high stage V Condenser 800153 1 G Dryer low stage W Condenser fan motor includes fan blade 800154 1 H High stage solenoid kit includ...

Page 40: ...Helmer Scientific i Series Ultra Low Freezer Service and Maintenance Manual 360173 A C 41 8 Schematics 8 1 Electrical Schematic...

Page 41: ...pressure liquid high pressure liquid cool high pressure liquid warm high pressure liquid warm high pressure gas low pressure gas warm R 404A HIGH STAGE high pressure liquid warm High Stage R 404A AMB...

Page 42: ...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 co...

Page 43: ...ir 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 a...

Page 44: ...Helmer Scientific i Series Ultra Low Freezer Service and Maintenance Manual 360173 A C 45...

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