Undercounter Refrigerator Service Manual
Contents
1. St 18 360164 A C Helmer 7 5 Change the Refrigerator Setpoint cc eee rns 19 7 6 Change the Control Sensor Offset 0 nananana cc ehh 19 7 7 Change the Hysteresis Value 2 0 cc eee hh 20 8 Maintenance 00 es 20 8 1 Recharge Refrigerant uua ace bebe dorm an bed om Gee ewe Sex bs po EX eq Gk Bebe 20 8 3 Clean the Refrigerator 0 0 0 0 0c eee nn hr hn 21 0 3 1 Condenser Oll sucus ue odessa 6 es Sees ee ee eed oe PRSETER 21 gt 41 gt 6 9 EE ee ee EE ee ee ee ee ee 21 MENN a ew od oe Ga ee dee ee hee 21 8 3 4 lt haces ches eed adu d 21 8 4 Unit Cooler Cover Removal and Installation lee RR RR RR RI 22 8 4 1 Remove the Unit Cooler Cover 23 8 4 2 Install the Unit Cooler Cover 23 Oo 099 22428574 case See oe ee 23 9 IFOUDICSNOOUNG xcu dx xk enes haa knee RENEE E rated bak 3 OR OX Ro 24 9 1 General Operation 24 9 2 Chamber Temperature Problems 24 wo C2. bee TOTO 9 eles ow oe E oe ee ee ee eee 9 PPM 10 5 1 5 Additional Warranty 10 5 2 Outside of USA and 10 Section Il Scientific Series 5 11 Product Configuration i233 gus cca ana beta RR GREC a Y toa para 11 6 1 Move Shelves Drawers and Baskets llllll a 11 6 2 Move Brackets and 5 2 2 22 ee eee eee ees 12 6 3 Level the Refrigerator 0 0 0 0 eee eee eee teeta 12 6 4 Reverse Door Hinge and Handle 0 0 eee nn nes 13 6 4 1 Remove the Door and lt 13 6 4 2 Reinstall the Door and lt 15 6 5 Stacked Undercounter Units 0 0 0 0 00 eee hann 17 7 Temperature Controller Setpoints 0 0 0 ce ees 17 7 1 X Operational Level 1 Parameters and Values OU 2 0 ce eee 18 7 2 Control Level 2 Parameters and Values Cn 1 0 0 ccc eee eens 18 7 3 Security Level 3 Parameters and Values 18 Te 10100 aoe Pega ees ee ends wages Gee eee sane
3. Helmer E NT ADA Undercounter Refrigerator Service Manual Scientific Series Model Group Scientific Series Laboratory Pharmacy SLR104 ADA Version A HELMER SCIENTIFIC 14400 Bergen Boulevard Noblesville IN 46060 USA 1 317 773 9073 FAX 1 317 773 9082 USA and Canada 800 743 5637 360164 A C ISO 13485 2003 CERTIFIED Helmer Document History Revision Date CO Supersession Revision Description A 11 2013 8268 Initial release B 21MAR 2013 8338 B supersedes A gt Corrected hysteresis value and refrigerant charge value Corrected part numbers for compressor and unit cooler Revised layout for ease of navigation and locating information Changed setpoint value as per CO 8490 Removed CE 0086 certification C 20 JUN 2014 8490 C supersedes B Date submitted for Change Order review Actual release date may vary 360164 A C Helmer Contents Section General 1 4 T About this 4 1 4 Intended Audience 0 0 cc Rh hh 4 12 MOR UNN ues zu epee ene teres Geese Bees nee Pra Pues se bee see eed pee TT 4 1 3 Copyright and ome ene d 4 2 SUN RC 4 21 Safety amp REE NE NE EN 4 22
4. does not stabilize is faulty at the refrigerator Compressor starting gt setpoint relay is faulty Condensing unit fan is gt not running Unit cooler fan is not running Compressor motor p has seized Temperature control probe is out of calibration Temperature control probe in the unit cooler is faulty Refrigerant level is too gt Condenser grill is dirty Air circulation at the top of the chamber is inadequate Ambient air temperature around the refrigerator is too high A component is gt faulty or internal connections are loose Scientific Series Models Action Confirm the temperature controller is operating correctly Replace the controller if necessary Confirm the relay is operating correctly Replace the relay 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 Contact Helmer Technical Service Confirm the probe is providing resistance in the range of 98 O to 110 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 flow and remove them if
5. Before moving drawers ensure they are completely empty for safe lifting Maximum basket drawer or shelf load is 100 lbs 46 kg NOTICE Before moving storage components protect stored items in refrigerator from extended exposure to adverse temperature 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 Remove a drawer or basket 1 Pull drawer or basket out until it stops 2 On the right rail locate the release tab and press downward 3 While holding the right release tab downward locate the release tab on the left rail and press upward 4 Pull drawer or basket free of the slides Install a drawer or basket 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 11 Helmer Scientific Series Models 6 2 6 3 360164 A C Move Brackets and Slides Remove shelf brackets 1 Using a screwdriver remove front bracket retainers 2 Tap front brackets upward to disengage standards 3 Remove front brackets from standards
6. Install shelf brackets 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 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 Level the Refrigerator NOTE gt Leveling feet are optional Helmer recommends the use of leveling feet gt Abubble level may be used to ensure the refrigerator is level Leveling feet must be adjusted to provide unit cooler drainage Front to back 1 Rotate the leveling feet to raise or lower leveling feet 2 When refrigerator is properly leveled bottom of the unit cooler will slope downward from front to back toward the condensate drain line Side to side 1 Rotate the leveling feet to raise or lower leveling feet 2 When refrigerator is properly leveled bottom of the unit cooler will be horizontal parallel to the floor 12 iz Helmer Scientific Series Models 6 4 Reverse Door Hinge and Handle NOTICE Before reversing door hinge and handle protect stored items in refrigerator from 6 4 1 360164 A C extended exposure to adverse temperature NOTE Refrigerator must be
7. NOTE Pressure varies depending on ambient air temperature 4 Add refrigerant so the low side pressure is within acceptable range 12 Ibs in to 14 Ibs in 83 kPa to 97 kPa 5 Remove pressure gauge Clean the Refrigerator Condenser Grill In environments where refrigerator is exposed to excessive lint or dust condenser grill may require cleaning more frequently than stated in preventive maintenance schedule Clean the condenser grill using a soft brush and a vacuum cleaner Exterior Clean glass surfaces with soft cotton cloth and glass cleaner Clean exterior surfaces with soft cotton cloth and non abrasive liquid cleaner Interior Clean painted surfaces with mild detergent Clean stainless steel surfaces with a general purpose laboratory cleaner suitable for stainless steel Door Gaskets Clean with soft cloth and mild soap and water solution 21 F Helmer Scientific Series Models 8 3 5 Clean and Refill Probe Bottle optional NOTE A kit that includes a probe bottle and glycerin is available from Helmer Obtain Fresh water bleach solution not provided gt 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 4oz 120 mL of product simulation solution per bottle 10 1 ratio of water to glycerin Clean and refill bottle Remove probe from bottle Remove bottle fr
8. for adjusting storage components Slide fordrawerorbasket gt B Door switch 120380 C Shelf standard RI D Standard for adjusting storage components 321638 1 E Slide for drawer or basket 400753 2 F Roll out basket optional includes slides and 401133 1 hardware G Drawer optional includes slides and 401081 1 hardware 360164 A C 30 Scientific Series Models 10 4 1 Lighting NOTE The chamber light is optional on Scientific Series refrigerators Light features partial views T Schematic Label Description Part Number Label A AX Not Light cover shown 10 4 2 Unit Cooler Label Description Part Number Schematic Label A Unit cooler assembly 8001 30 1 Unit cooler fan motor 120540 H C Temperature control probe 120579 M 360164 A C 31 Scientific Series Models 10 5 Door and Hinge 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 Part Number A Hinge covered edge mount 220506 B C Hinge uncovered spring and pin assembly E D E F Door key lock with key close up Not Door gasket magnetic shown Not Door lock replacement kit shown 360164 A C 32 Helmer Scientific Series Models 10 6 Side Access Panel Undercounter refrigerators feature easy access for servicing remo
9. of damage a ies Caution Unlock all casters to equipment or danger to operator Caution Hot surface Earth ground terminal Caution Shock electrical Protective earth ground hazard terminal Avoiding Injury Review safety instructions before installing using or maintaining the equipment Before moving unit ensure door is closed and casters if installed are unlocked and free of debris Before moving unit disconnect the AC power cord and secure the cord Never physically restrict any moving component Avoid removing electrical service panels and access panels unless so instructed Keep hands away from pinch points when closing the door Avoid sharp edges when working inside the electrical compartment and refrigeration compartment Ensure biological materials are stored at recommended temperatures determined by standards literature or good laboratory practices Proceed with caution when adding and removing samples from the refrigerator Use supplied power cord only Using the equipment in a manner not specified by Helmer Scientific may impair the protection provided by the equipment Decontaminate parts prior to sending for service or repair Contact Helmer Scientific or your distributor for decontamination instructions and a Return Authorization Number Ensure biological materials are stored safely in accordance with all applicable organizational regulatory and legal requirement
10. on the floor or on an elevated work surface with enough space in front of the refrigerator to lay the door face down for disassembly Remove the Door and Hinges 1 Switch AC ON OFF switch OFF 2 Remove the door handle assembly a Remove two screws holding the door handle assembly on the door b Setthe door handle assembly aside Remove Door handle assembly 3 Remove door latch 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 a E Door latch plates 4 With the door shut remove the cover plate from both hinges 13 Helmer Scientific Series Models 5 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 and compress spring downward e Remove spring assembly from the lower hinge f Setthe spring assembly aside NOTICE A second person should assist by supporting the door while the hinges are removed NOTE 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 6 Remove t
11. the SET button 2 While holding the SET button press the UP or DOWN arrow buttons to change the temperature setpoint 3 Release all buttons The temperature setpoint is changed EXAMPLE Current setpoint is 3 4 C Target setpoint is 4 0 C gt Setpoint adjustment value is 0 6 C Change the Control Sensor Offset The temperature controller senses chamber temperature through a probe in the unit cooler The chamber setpoint typically varies from the measured temperature so an offset value is used by the control system to compensate for the difference gt Value is factory preset and varies for each unit Offset value can be changed from 10 0 C to 10 0 C NOTICE Control sensor offset is factory preset and should not be changed unless directed by Helmer Technical Service NOTE If the variance is within acceptable limits for your organization changing the offset value is optional 19 Helmer Scientific Series Models 8 360164 A C Change the Hysteresis Value Default is 1 2 C Hysteresis value for older refrigerators may be different than the value listed above The refrigerator will operate correctly with the original hysteresis value or with the hysteresis value listed above Allowable temperature variance above the refrigerator setpoint Parameter values are factory preset and should not be changed unless directed by Helmer Technical Service gt When there is no interaction for 25 seconds
12. the temperature controller exits program mode and returns to normal mode NOTE NOTICE Hysteresis is factory preset and should not be changed unless directed by Helmer Technical Service Maintenance NOTICE Before performing maintenance protect items in refrigerator from extended exposure to adverse temperature Allow refrigerator temperature to stabilize at setpoint after performing service or after extended door opening NOTE Refer to the operation manual for the preventive maintenance schedule Recharge Refrigerant CAUTION Review all safety instructions prior to recharging refrigerant Refer to chapter 2 Safety Maintenance should only be performed by trained refrigeration technicians NOTICE Use only non CFC R 134A refrigerant Full initial refrigerant charge varies by model and power requirements which can be found on the product specification label Power Requirements Initial Charge SLR104 ADA 115 V 4 5 oz 128 g Obtain gt Refrigerant gt Calibrated pressure gauge 0 Ibs in to 25 Ibs in 0 kPa to 175 20 Helmer Scientific Series Models 8 3 8 3 1 8 3 2 8 3 3 8 3 4 360164 A C Add refrigerant 1 Attach pressure gauge to the fittings 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
13. 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 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 Install the door handle on the opposite side of the door 5 Install the latch plates and spacer bar on the opposite side of the cabinet 360164 A C 15 ss Helmer Scientific Series Models 6 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 c Orient the bend in the coil toward the front of the refrigerator 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 Spring cap Bushing 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 g Use a J hook tool to engage the right most hole in the sp
14. 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 filters light bulbs and door gaskets are excluded from this warranty coverage Inspection of defective parts by Helmer will be final in determining warranty status Warranty procedures must be followed in all events General Information 5 1 4 5 2 360164 A C 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 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 MERCHAN
15. 73 9073 FAX 1 317 773 9082 www helmerinc com Helmer S C F C
16. POUL iss ra eee PUR el Ghee PSs drev bend b re 5 2 3 Avoiding Injury 5 3 Configuration EE EE 6 9 1 Model and Input gem dite de den 6 9 2 Scientific Series Control System ee Ono dr de dr 6 9 2 Temperature gg 6 9 icre uu pont aeu qu eos deem eee eee dae NK 7 3 3 1 Fill Temperature Probe 7 3 3 2 Install Additional Probe Through Rear Port 7 34 ARENT udi cates Heb ees eee oa ee ae ws Dee SHE Se aoe Sms eae 7 3 4 1 Chart Recorder Access svada boleh eee sk beet entre be 8 942 Install Ghatt Papers adda deeb Gomi HG acd CESSES eec eee Ree ee h 8 4 Compliance 0 0c eee 9 4 1 Regulatory CombplialiGO 4 65 20 che Nee wed oo WR Reo wee eae het 9 42 WEEE Compliance i gh xm Adds eee eed bod ne eae de woke ad Bm Se Dawe Vor Ros deseos de 9 9 Warranty PEPE ee EEE ENE ee ee 9 51 Rel i Product Warranty USA and Canada 0 0 eee ee eens 9 5 1 1 Resolution RS eee oe As She eos Stee eons EN 9 SLA COMDES
17. TABILITY 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 INDEMNIT Y STRICT LIABILITY OR OTHER TORT OR OTHERWISE WITH RESPECT TO THE GOODS OR ANY 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 fire flood 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 Outside of USA and Canada Consult your local distributor for warranty information 10 Scientific Series Models Section Il Scientific Series Models 6 1 360164 A C Product Configuration Move Shelves Drawers and Baskets Storage features CAUTION Keep hands away from pinch points when closing the door
18. cessary Drawer slides are not gt Using a lightweight oil lubricate the bearings in the lubricated slides Drawer or basket is Confirm both slides for the drawer or basket are misaligned or not mounted at the same height level Drawer slide is faulty gt Confirm the slide is operating correctly Replace if necessary Door does not open Debris in the hinges gt Confirm the hinges are free of debris Clean the easily hinges if necessary Hinge is faulty Confirm the hinge spring or pin is not damaged Replace entire hinge lower hinge only if necessary Lower hinge spring Replace the entire lower hinge spring and pin and or pin may be assembly bent or faulty 9 2 Chamber Temperature Problems Problem Possible Cause Action Compressor runs Refrigerator setpoint gt Confirm the setpoint is set within the operating continuously is set too low range and change it if necessary Temperature control gt Confirm the unit cooler probe is providing probe in the unit resistance in the range of 98 O to 110 O Replace cooler is faulty the probe if necessary Temperature controller gt Confirm the temperature controller is operating is faulty correctly Replace it if necessary Compressor starting gt Confirm the relay is operating correctly Replace relay is faulty the relay if necessary 360164 A C 24 Helmer 360164 Problem Possible Cause Chamber temperature Temperature controller
19. he lower hinge 0 9 Support the door Remove five screws attaching the lower hinge to the door and cabinet Remove the lower hinge Reverse the hinge manually as if moving the hinge from a fully closed to a fully open position Set the lower hinge aside Continue to support the door 7 Remove the upper hinge a Remove five 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 Remove 3 screws long screws short shim Hinge plate Hinge removal lower hinge shown with spring removed 12 Remove the door and set it aside 360164 A C 14 Helmer Scientific Series Models 6 4 2 Reinstall the Door and Hinges 1 Install the hinges and hinge plates on the door a M Hand thread two screws through each hinge and into the door b Leave the screws slightly loose c Ifa 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 NOTICE 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
20. ly Use collection and return systems available locally For more information on the return recovery or recycling of this product contact your local distributor Warranty 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 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 finish 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 field 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 first year of the warranty period Scientific Series model compressor warranty period is five 5 years Parts For a period of
21. mersed in the optional probe bottle For the probe bottle use Approximately 4 oz 120 mL of product simulation solution 10 1 ratio of water to glycerin Left Probe bottle with temperature probe Right Access port on rear of refrigerator Fill Temperature Probe Bottle NOTICE Temperature probes are fragile handle with care 1 Remove all probes from bottle and remove bottle from bracket 2 Remove cap and fill with approximately 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 Install Additional Probe Through Rear Port 1 Peel back putty to expose port 2 Insert probe through port into chamber 3 Insert probe into bottle 4 Replace putty ensuring a tight seal 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 Connect the chart recorder to AC power Install battery Add paper Install the chart recorder probe in the probe bottle through the rear port Calibrate chart recorder to match chamber temperature Vvvvyv Helmer General Information 3 4 1 Chart Reco
22. necessary Confirm the refrigerator is placed appropriately Contact Helmer Technical Service 25 Helmer 9 3 360164 Condensation Problems Scientific Series Models Confirm the refrigerator is level and the door is Problem Possible Cause Action Excessive water in Humid air is entering gt the water evaporation the chamber tray Excessive water the Humid air is entering gt chamber the chamber Connection between the unit cooler and the drain tube is loose Drain line is plugged Water leaks from Humid air is entering the bottom of the the chamber refrigerator Excessive water in the gt evaporation tray aligned closing tightly and sealing correctly Confirm the refrigerator is level and the door is aligned closing tightly and sealing correctly Confirm the connection is secure Tighten the connection if necessary Confirm the drain tube is free of debris Remove debris if necessary Confirm the refrigerator is level and the door is aligned closing tightly and sealing correctly Contact Helmer Technical Service 26 iz Helmer Scientific Series Models 10 Parts NOTICE Before replacing parts protect items in refrigerator from extended exposure to adverse temperature gt Allow refrigerator temperature to stabilize at setpoint after replacing parts or after extended door opening 10 1 Front A B C 360164 A C Lower panel featu
23. nstructed in product documentation or by Helmer Technical Service NOTE To change the value for a parameter first enter the program mode for that level When there is no interaction for 25 seconds the temperature controller exits program mode and returns to normal mode View or change parameter values 1 Enter program mode a Press and hold the UP and DOWN arrow buttons simultaneously for approximately three seconds b The temperature controller is now in program mode 2 Select the parameter to be changed a Press and release the UP or DOWN arrow buttons until the desired program level flashes on the display 3 Change a parameter value Press and release the DOWN arrow button until the desired parameter flashes on the display b Press and hold the SET button c While holding the SET button press the UP or DOWN arrow buttons to change the value 4 Release all buttons to exit the parameter New settings are saved 17 F Helmer Scientific Series Models 5 Repeat steps 2 through 4 to access another program level or to view or change parameter values in the selected level 6 Exit program mode a Press and hold the UP and DOWN arrow buttons simultaneously for approximately one second b The current chamber temperature is displayed 7 1 Operational Level 1 Parameters and Values OU NOTE Parameters are listed in order of appearance The temperature controller is programmed at the factory to yield a refrigerator setpoin
24. om bracket Clean bottle with water bleach solution Fill bottle with 4 oz 120 mL of product simulation solution Cap bottle tightly to minimize evaporation Place bottle in bracket Replace probe immersing at least 2 50 mm 8 4 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 refrigerator s inability to maintain temperature Required tools 5 16 socket wrench gt Tool to push putty away from the drain hose Drain line and hose Label Description Unit cooler cover Drain port C Drain hose 360164 A C 22 Helmer Scientific Series Models 8 4 1 Remove the Unit Cooler Cover A WARNING Disconnect the refrigerator from AC power when removing the unit cooler 1 Switch AC ON OFF switch OFF 2 On the back of the cabinet peel the putty back to expose the drain hose C 3 Remove top shelf drawer or basket from the chamber 4 Remove drain hose from unit cooler drain port B a Pull drain hose downward to separate from unit cooler b Twist drain hose while pulling to assist in removal 5 Push the drain hose C out through rear of chamber 6 Remove the unit cooler cover 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 c
25. ondensation dou EI RTI ISP eee oe Foe ESSE eee es RIP qisszu Fes 26 TO ser 27 T0 1 FOM 27 102 Ri rieni a de ee ae See o oe Bae a ra A 28 10 3 Electrical Tray Components cf ec ded 29 10 4 RR RIRs rns 30 10AT GONIN dense med adum Judd dead d Ee oe 31 EE EE COI ES 31 Doorand wae oe ed acne ER 32 10 6 Side Access Panel 2avuuauvn varar n annan nn narr eee 33 11 96cHelali EE sake eee EE 34 11 1 SLR model 104 configuration 0 0 0 0 0 RR RR hrs 34 360164 A C General Information Section I General Information 1 1 1 2 1 3 2 1 About this Manual Intended Audience This manual is intended for use by end users of the refrigerator and authorized service technicians Model References Generic references are used throughout this manual to group models that contain similar features For example 104 models refers to all models of that size SLR104 ADA This manual covers all SLR undercounter refrigerators which may be identified singly by its size or by its respective Series Copyright and Trademark Helmer Scientific Series and Rel i are registered trademarks o
26. over to avoid damage to the fan wiring 8 4 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 Use the socket wrench to install 4 screws to secure the unit cooler cover 3 Insert the drain hose through hole in the refrigerator a Push drain hose upward toward the unit cooler drain port b Inthe chamber push drain hose onto unit cooler drain port 4 Reinstall top shelf drawer or basket if previously removed 5 On the back of the cabinet press putty around the drain hose 6 Switch AC ON OFF switch ON 8 5 Supplies Refrigerant non CFC R 134A Glycerin solution 400922 1 Chart paper 220366 52 sheets Chart recorder backup battery 1 9 V non rechargeable alkaline or equivalent 360164 A C 23 bz Helmer Scientific Series Models 9 Troubleshooting A CAUTION Review all safety instructions prior to troubleshooting Refer to chapter 2 Safety gt Troubleshooting should only be performed by trained refrigeration technicians 9 1 General Operation Problems Problem Possible Cause Action A drawer or basket Debris in the drawer the drawer or basket out and confirm the does not slide easily slides slides are free of debris Clean if ne
27. r trademarks of Helmer Inc in the United States of America Copyright 2014 Helmer Inc All other trademarks and registered trademarks are the property of their respective owners Helmer Inc doing business as DBA Helmer Scientific and Helmer Safety The operator or technician performing maintenance or service on Helmer Scientific products must a inspect the product for abnormal wear and damage b choose a repair procedure which will not endanger his her safety the safety of others the product or the safe operation of the product and c fully inspect and test the product to ensure the maintenance or service has been performed properly Safety Definitions The following general safety alerts appear with all safety statements within this manual Read and abide by the safety statement that accompanies the safety alert symbol A WARNING The safety statement that follows this safety alert symbol indicates a hazardous situation which if not avoided could result in serious injury CAUTION The safety statement that follows this safety alert symbol indicates a hazardous situation which if not avoided could result in minor or moderate injury NOTICE The safety statement that follows this safety alert symbol indicates a situation which if 360164 A C not avoided could result in damage to the product or stored inventory Helmer Product Labels 2 2 2 3 360164 A C General Information Caution Risk
28. rder Access Open door by pulling door open 3 4 2 Install Chart Paper 1 Press and hold C button When stylus begins to move left release button The LED flashes 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 NOTE For accurate temperature reading ensure that current time is aligned with time line groove when chart knob is tightened 6 Confirm temperature range is set to the correct value 7 Press and hold C button When stylus begins to move right release button 8 Confirm stylus is marking temperature correctly 360164 A C 8 bz Helmer General Information 4 4 1 4 2 360164 A C Compliance Regulatory Compliance Pollution degree 2 for use in USA and Canada only This product is certified to applicable UL and CSA standards by a NRTL Sound level is less than 70 dB A 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 gt Collect this product separate
29. res 2 Schematic Label Description Part Number Label A Light switch optional 120202 AY B Temperature controller 400835 1 B C Main power switch 120478 Q NOTE The chamber light is optional on Scientific Series refrigerators 27 iz Helmer Scientific Series Models 10 2 Rear Rear features Label Description Part Number A Product specification label Insert for stacking bracket Access port 321190 1 321184 1 120630 800129 1 Drain line B C D E Rear panel F Power cord G Compressor H Condensate evaporator Power connector Not Condenser fan motor 120608 shown Caster optional swivel with brake 220380 360164 A C Schematic Label 28 iz Helmer Scientific Series Models 10 3 Electrical Tray Components Electrical tray features CAUTION Disconnect the refrigerator from AC power before accessing the electrical tray Schematic Label Description Part Number Label A 12 V DC power supply for optional cabinet lighting 400836 1 AH B Temperature control transformer 401097 1 Al C Compressor relay 400841 1 AD 360164 A C 29 Scientific Series Models 10 4 Interior A B Interior features Label Description Part Number Schematic Label A Door Solid door Powder coated 401137 1 Stainless steel 401137 2 Glass door optional Powder coated 401138 1 Stainless steel 401138 2 Door switch __ Shelf standard gt Standard
30. ring 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 7 Switch AC ON OFF switch ON 8 Verify the door is level and the hinges operate smoothly and the door seals tightly 360164 A C 16 Helmer Scientific Series Models 6 5 360164 A C A WARNING Stacked Undercounter Units Fora stacked configuration both units must have leveling feet installed The back brace bars and front stabilizing brackets must be installed gt 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 floor Temperature Controller Setpoints Temperature monitor and controller Temperature controller setpoints are programmed at the factory Setpoints can be viewed and changed through the temperature controller Parameter values reside in three program levels Parameters are grouped into three levels Operational 1 gt Control 2 gt Security 3 NOTICE Changing parameter values affects refrigerator operation Do not change parameter values unless i
31. s The refrigerator is not considered to be a storage cabinet for flammable or hazardous materials se Helmer General Information 3 Configuration 3 1 Model and Input Power NOTE Service information varies depending on the model and power requirements This information appears on the product specification label located on the rear of the refrigerator The model also appears on a label located in the chamber on the upper side of the right wall SLR104 ADA A et er Helmer 14400 B Boul d 1000000 1000000 el Noblesville IN USA Version www helmerinc com Version A Laboratory Refrigerator Voltage 115 V Weight 165 1b 75 kg HZ 60 D www helmerinc com Amps 5 Power 0 58 kW 9 Certified Refrigerant Type 134A UL 61010 1 CSA 61010 1 Made in USA Label Description Serial number SN C Version D Power requirements 3 2 Scientific Series Control System Scientific Series refrigerators feature the SLR combined monitor and temperature controller The Scientific Series monitoring and control system controls chamber temperature and displays operational information Temperature monitor and controller 360164 A C 6 zz Helmer General Information 3 3 3 3 1 3 3 2 3 4 360164 A C Temperature Probe NOTE The probe bottle kit is an optional accessory and is required if the optional chart recorder is installed External probes may be introduced through existing rear port and im
32. t of 3 4 C Parameter Description Default Value o PPF Off time 20 0 1 Increase value to lower chamber temperature Reduce value to raise chamber temperature 2 Hysteresis for older refrigerators may be different than the value listed in this table The refrigerator will operate correctly with the original hysteresis value or with the hysteresis value listed in this table 7 2 Control Level 2 Parameters and Values Cn Parameter Identification Description Default Value Unit Fahrenheit or Celsius G drES Display resolution YES 7 3 Security Level 3 Parameters and Values SE P t SEE OR Description Default Value 5 Access code for security 0 7 4 Error Codes Code Description PSC Unit cooler probe is short circuited PFA Unit cooler probe is malfunctioning 7 7 Chamber temperature is higher than the scale Chamber temperature is lower than the scale 360164 A C 18 Helmer Scientific Series Models 7 5 7 6 360164 Change the Refrigerator Setpoint NOTE Default setpoint is 3 4 C Setpoint for older refrigerators may be different than the value listed above The refrigerator will operate correctly with the original setpoint value or with the setpoint value listed above When there is no interaction for 25 seconds the temperature controller exits program mode and returns to normal mode Change the setpoint 1 Onthe temperature controller press and hold
33. val and replacement of the compressor and condenser The compressor is accessible from the rear and the side Side access panel 360164 A C 33 Helmer 11 11 1 360164 A C Schematics SLR model 104 configuration AX INTERIOR LIGHT OPTIONAL AH INTERIOR LIGHT POWER SUPPLY OPTIONAL AY LIGHT SWITCH 1 DOOR SWITCH OG em COOLER FAN s on OF SSR 1 TEMP CONTROLLER 1 S DOOR SWITCH LINE L1 TEMP CONTROL XFMR On INTERIOR LIGHT on 1 OR SSR 4 CONDENSING UNIT otic een UNIT COOLER FAN OWO OP TEMP CONTROL XFMR NEUTRAL L2 O O INTERIOR LIGHT END OF MANUAL Al SSR TEMP CONTROL XFMR 23 COMPRESSOR Scientific Series Models SLR104 ADA SCIENTIFIC SERIES REFRIGERATOR A COMPRESSOR U CONDENSING UNIT FAN MOTOR TEMPERATURE CONTROL TEMPERATURE SENSOR TEMP M PROBE Q MAIN POWER SWITCH P CIRCUIT BREAKERS 230V ONLY L1 OUT L2 OUT EMI FILTER L2 IN L1IN GND POWER CORD MAIN POWER 115V 10 60 Hz 230V 21096 50 Hz 230V 21096 60 Hz 34 HELMER SCIENTIFIC 14400 Bergen Boulevard Noblesville IN 46060 USA PH 1 317 7
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