Helmer (Version A) HB120(Versions A and B) Service Manual Download Page 129

Page: 129 / 138

360077-1/O

128

Horizon Series™ - Laboratory, Pharmacy, and International Blood Bank Models

27.3.1

Electrical Box

Electrical box features (HHB120 model shown).

Label Description

Part Number

Schematic

Label

Compressor relay

120426

Power line filter

120400

Alarm buzzer

120160

Not

shown

Defrost timer (HLR and HPR models)

111 models: 120556

120, 125, 245,256 models: 800127-1

Summary of Contents for (Version A) HB120(Versions A and B)

Page 1: ...iB120 iB125 iB245 iB256 Versions A and B iHB111 Version B iHB120 iHB125 iHB245 iHB256 Versions A and B HB111 Version A HB120 HB125 HB245 HB256 Versions A and B HHB111 Version A HHB120 HHB125 HHB245 H...

Page 2: ...on Date CO Supersession Revision Description O 01 APR 2014 9313 O supersedes A B C D E F G H I J K L M N Revised layout for ease of navigation and locating information Date submitted for Change Order...

Page 3: ...ional Probe Through Top Port 13 3 3 3 Install Additional Probe Through Side Port 13 3 4 Internal Outlet 13 3 5 Chart Recorder 13 3 5 1 Chart Recorder Access 14 3 5 2 Install Chart Paper 14 4 Alarm Ref...

Page 4: ...2 Manual Chamber Alarm Test 31 8 9 3 Power Failure Alarm Test 32 8 9 4 Door Ajar Alarm Test 32 8 9 5 No Battery Alarm Test 32 8 10 Additional System Settings 33 8 10 1 Screen Contrast 33 8 10 2 Date a...

Page 5: ...torage 60 12 4 4 Door and Hinge 61 13 Schematics 62 13 1 iB and iHB Models 11 20 25 45 56 Cubic Feet 62 13 2 iLR iPR Models 11 Cubic Feet 63 13 3 iLR and iPR Models 20 25 45 and 56 Cubic Feet 64 14 i...

Page 6: ...ler Setpoints 81 17 1 Level 1 Parameters and Values 82 17 2 Level 2 Parameters and Values 83 17 3 Level 3 Parameters and Values 83 17 4 Level 4 Parameters and Values 84 17 5 Change the Refrigerator Se...

Page 7: ...Settings 109 24 1 Monitor and Controller Interface 110 24 2 Refrigerator Setpoint 111 24 3 Temperature Alarm Setpoints 111 24 3 1 High Temperature Alarm 112 24 3 2 Low Temperature Alarm 112 24 4 Tempe...

Page 8: ...4 27 Parts 125 27 1 Front 125 27 1 1 Laboratory Display 126 27 2 Top 126 27 3 Rear 127 27 3 1 Electrical Box 128 27 4 Interior 129 27 4 1 Lighting 130 27 4 2 Unit Cooler 130 27 4 3 Storage 131 27 4 4...

Page 9: ...ic and Helmer 2 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 wh...

Page 10: ...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 standa...

Page 11: ...N Weight 800 lb 363 kg VOLT 115 V IPR245 000000 VER B Pharmacy Refrigerator Noblesville IN USA www helmerinc com HZ 60 Amps 11 5 A 2009 0086 REF SN IPR245 000000 VER B www helmerinc com A B C D Left C...

Page 12: ...monitoring system and independent temperature controller i Center monitor Independent temperature controller 3 2 2 Horizon Series Blood Bank Monitoring System and Independent Temperature Controller Ho...

Page 13: ...isplays operational information Laboratory monitoring and control system 3 3 Temperature Probes Number and location of probes varies by model External probes may be introduced through existing top por...

Page 14: ...3 4 Internal Outlet If installed this duplex outlet with vapor proof cover and a GFCI ground fault circuit interrupter provides a power source for operating devices inside refrigerator Internal duple...

Page 15: ...shes 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 curren...

Page 16: ...is 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 0086 EC REP Emergo Europe Molenstraat 15 2513 BH Th...

Page 17: ...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 warr...

Page 18: ...OSS 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 tha...

Page 19: ...er 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 NOTICE When ins...

Page 20: ...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 d...

Page 21: ...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 wi...

Page 22: ...age standards 3 Using a screwdriver install front bracket retainers Remove shelf brackets 1 Using a screwdriver remove front bracket retainers 2 Tap front brackets upward to disengage standards 3 Remo...

Page 23: ...ltage level C Chamber temperature display D Button labels E Buttons F Date and time display 8 1 1 Home Screen Functions NOTE Refer to chapter 14 i Center Screen Reference for a complete list of screen...

Page 24: ...text Change date and time information Change temperature units Change the volume and pattern for audible alarms Enable or disable the chart paper timer Enable or disable the temperature graph display...

Page 25: ...ed and the monitor resumes collecting and displaying real time temperature data In this case there is an interruption in data collection the temperature displayed on the graph for eight hours earlier...

Page 26: ...your organization changing probe settings is optional Default setting for chamber temperature is 4 0 C Value is factory preset Obtain Independent thermometer calibrated and traceable per national stan...

Page 27: ...default values NOTE The factory default settings may not be the same as the settings that were factory calibrated before the refrigerator was shipped Setting Restored Value High Alarm Setpoint 5 5 C...

Page 28: ...are collocated and distinguishing the source of the alarm quickly is desirable Default setting is Single Setting can be changed between Single Double Triple and Constant Change the alarm pulse 1 Press...

Page 29: ...perature at which the Condenser Temperature Alarm activates If the temperature of the condenser discharge line is greater than or equal to this value the alarm activates Default setpoint is 50 C Setpo...

Page 30: ...the BACK button to return to the Edit Configuration screen or press the HOME button to exit The new settings are saved 8 8 8 Chart Paper Alarm The default setting for the chart paper timer is Enabled...

Page 31: ...larm Test Status Press the SELECT button The System Alarm Test Status screen appears 4 Press the DOWN button to select Start Low Alarm Auto Test Press the SELECT button The Low Alarm Test in Progress...

Page 32: ...oz 250 mL glass half full of warm water NOTICE Temperature probes are fragile handle with care Test the low alarm 1 Identify setting for low alarm setpoint 2 Remove chamber temperature probe from bot...

Page 33: ...will activate immediately 5 Reconnect the refrigerator to AC power Power failure alarm will clear and audible alarm will cease 6 Change the Power Failure Timeout setting to the original setting 8 9 4...

Page 34: ...s a 2 digit number 01 12 Day is a 2 digit number 01 31 Default date format is mm dd yyyy The Clock Mode setting controls whether the time is displayed in a 12 hour or 24 hour format When using the 12...

Page 35: ...Press the SELECT button 5 Press the UP or DOWN buttons to select Language Press the SELECT button 6 Press the INC or DEC buttons to select the desired language 7 Press the BACK button to return to the...

Page 36: ...nth and day BB BB Previous date month and day C Number of door openings on current date D Number of door openings on previous date EE Event number The most recent event is numbered as 1 Values can be...

Page 37: ...r Press the SELECT button The Event Log Detail screen for the selected event is displayed 4 Press the BACK button to return to the Event Log screen or press the HOME button to exit NOTE If the event i...

Page 38: ...that level When there is no interaction for 60 seconds the temperature controller exits program mode 1 Enter Level 1 program mode a Press and hold the UP and DOWN buttons simultaneously for approxima...

Page 39: ...e controller is programmed at the factory with a refrigerator setpoint of 4 0 C Parameter Description Default Value Autotune selection oFF SP1 proportional band gain or hysteresis in C iLR111 iPR111 m...

Page 40: ...l currently selected 2 9 3 Level 3 Parameters and Values Parameter Description Default Value SP1 output device type SSd1 SP2 output device type read only SSd2 Sensor burn out protection type upscale o...

Page 41: ...he reference temperature displayed on the temperature controller may not be the same as the temperature displayed on the i Center monitor Allow the temperature to stabilize for 10 minutes prior to cha...

Page 42: ...rant 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...

Page 43: ...lies 3 Close the access panel 111 models only 10 4 Replace the Fluorescent Lamps 1 Disconnect the refrigerator from AC power Remove one battery from the monitoring system backup battery holder 2 Singl...

Page 44: ...ater 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...

Page 45: ...oler CAUTION The condensate evaporator and water evaporation tray are hot 1 Disconnect the refrigerator from AC power Remove one battery from the monitoring system backup battery holder 2 Remove top d...

Page 46: ...toward the unit cooler drain port b In the chamber push drain hose onto unit cooler drain port 4 On the back of the chamber press putty around the drain hose 5 Reinstall the top drawer shelf or basket...

Page 47: ...is misaligned or not level Confirm both slides for the drawer or basket are mounted at the same height Door does not open easily Debris in the hinges Confirm the hinges are free of debris Clean the h...

Page 48: ...s faulty Confirm the temperature controller is operating correctly Replace it if necessary Condensing unit fan is not running Check the condensing unit fan connections Replace the fan motor if necessa...

Page 49: ...rms are not audible Alarm system is faulty Confirm the circuit board and line connections are functioning correctly Control board is faulty Replace control parts with those that are included in the co...

Page 50: ...Repair the original outlet or connect to a different outlet if necessary Power cord is faulty Confirm the power cord is connected securely Secure the power cord if necessary Power supply board is fau...

Page 51: ...probe if necessary Condenser probe is not calibrated Confirm the condenser probe is reading correctly Calibrate the probe if necessary Compressor is overheating due to lack of airflow Check the conde...

Page 52: ...rs the current should be approximately 0 43 A to 0 55 A For 230 V refrigerators the current should be approximately 0 21 A to 0 35 A Humid air is entering the chamber Confirm the refrigerator is level...

Page 53: ...except 111 models 800112 2 B i Center display Refer to subsequent section s for part numbers K C Chart recorder and chart recorder door iB111 and iHB models 400409 2 X D Chart recorder 400409 3 X E C...

Page 54: ...he control and display board kit K D Interface cable 400502 1 AF Not shown Display assembly 400509 1 Includes LCD board and touchpad K NOTICE The i Center display assembly is sensitive to static elect...

Page 55: ...op A B C D Top features Label Description Part Number Schematic Label A Monitoring backup batteries 715031 AE B Condenser probe 400674 1 probe with connector AC C Compressor unit Contact Helmer A D Co...

Page 56: ...tion s for part numbers B Circuit breaker 6 A Single door 230 V models 120429 P Circuit breaker 7 A Double door 230 V models 120428 P C Condensate evaporator kit Includes the condensate evaporator and...

Page 57: ...and iPR 120 125 245 and 256 models 400422 1 B B Compressor relay 120426 AA C Power line filter 120400 AK D Alarm buzzer 120457 D E Defrost timer iLR and iPR models only 111 models 120556 120 125 245...

Page 58: ...probe 400510 1 AB C Probe bottle and glycerin kit 400922 1 D Lower chamber probe 800117 1 except 111 model N E Unit cooler Refer to subsequent section s for part numbers AG F Door switch 120380 I G D...

Page 59: ...ower when replacing lamps A B Light features Label Description Part Number Schematic Label A Light assembly models with stainless steel interior 115 V 400508 1 230 V 400508 2 M B Light assembly models...

Page 60: ...scription Part Number Schematic Label A Unit cooler fan motor 115 V 111 models 120540 120 and 125 models 120411 245 and 256 models one fan 120587 245 and 256 models two fans 120410 230 V 111 models 12...

Page 61: ...120 and 245 models 400415 1 125 and 256 models 400415 2 D Drawer assembly includes 2 slides and hardware 111 model with glass door 400752 1 120 and 245 models with glass doors 400370 1 125 and 256 mo...

Page 62: ...Number A Door lock 220374 B Door handle pad 320684 1 C Hinge bearing 220375 D Upper hinge bracket Right hinge 400376 1 Left hinge 400376 2 E Door gasket 111 models 321082 1 120 125 245 and 256 models...

Page 63: ...RAL L2 1 NOT USED 2 NOT USED 4 POWER SUPPLY BOARD 5 TEMPERATURE CONTROLLER 6 CHART RECORDER TRANSFORMER 8 RIGHT DOOR HEATER 7 COMPRESSOR RELAY 9 LEFT DOOR HEATER 12 CONDENSATE EVAPORATOR 10 DOOR SWITC...

Page 64: ...POWER SUPPLY BOARD 5 TEMPERATURE CONTROLLER 6 CHART RECORDER TRANSFORMER 8 RIGHT DOOR HEATER 7 COMPRESSOR RELAY 9 LEFT DOOR HEATER 12 CONDENSATE EVAPORATOR 10 NOT USED 11 CONTROL BOARD 3 POWER LINE F...

Page 65: ...NOT USED 4 POWER SUPPLY BOARD 5 TEMPERATURE CONTROLLER 6 CHART RECORDER TRANSFORMER 8 RIGHT DOOR HEATER 7 COMPRESSOR RELAY 9 LEFT DOOR HEATER 12 CONDENSATE EVAPORATOR 10 NOT USED 11 CONTROL BOARD 3 P...

Page 66: ...ion INFORMATION screen i Help Index option i Help screen EVENT LOG screen EVENT LOG DETAIL screen SYSTEM ALARM TEST STATUS screen Start High Alarm Auto Test option Start Low Alarm Auto Test option Can...

Page 67: ...ption Door Ajar Timeout option Power Failure Timeout option Temperature Graph option TEMPERATURE CALIBRATION screen Select Temp Probe option Temperature option VIEW CONFIGURATION screen Clock Mode dis...

Page 68: ...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 NOTICE When installin...

Page 69: ...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 sy...

Page 70: ...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 ba...

Page 71: ...rom standards 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...

Page 72: ...nction Edit Configuration password required Change the language used for text Change date and time information Change temperature units Change the volume and pattern for audible alarms Enable or disab...

Page 73: ...ance is within acceptable limits for your organization changing probe settings is optional Default setting for chamber temperature is 4 0 C Value is factory preset Obtain Independent thermometer calib...

Page 74: ...l 16 5 Factory Default Settings 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 c...

Page 75: ...alarms are collocated and distinguishing the source of the alarm quickly is desirable Default setting is Single Setting can be changed between Single Double Triple and Constant Change the alarm pulse...

Page 76: ...ning is greater than or equal to this value the alarm activates Default delay setting is three minutes Setting can be changed from 0 minutes to 60 minutes Change the alarm delay 1 Press the MAIN butto...

Page 77: ...2 Press the DOWN button to highlight Edit Configuration Press the SELECT button 3 Enter the password when prompted 4 Press the DOWN button to highlight System Options Press the SELECT button 5 Press...

Page 78: ...d water 1 glass filled with crushed ice 1 8 oz 250 mL glass half full of warm water NOTICE Temperature probes are fragile handle with care Test the low alarm 1 Identify setting for low alarm setpoint...

Page 79: ...ailure Timeout f Press the DEC button to change the setting to 0 4 Disconnect the refrigerator from AC power Power failure alarm will activate immediately 5 Reconnect the refrigerator to AC power Powe...

Page 80: ...sword when prompted 4 Press the DOWN button to highlight Set Date Time Press the SELECT button 5 Press the UP or DOWN buttons to select the date and time settings to change 6 Press the INC or DEC butt...

Page 81: ...ss the SELECT button 3 Enter the password when prompted 4 Press the DOWN button to highlight System Options Press the SELECT button 5 Press the DOWN button to highlight Temperature Units 6 Press the I...

Page 82: ...gram mode 2 Select the parameter to be changed a Press and release the UP or DOWN buttons until the desired parameter flashes on the display b To access Level 2 or Level 3 parameters select the LEVL p...

Page 83: ...n or hysteresis in C 4 0 SP1 integral time reset in minutes oFF SP1 derivative time rate oFF SP1 derivative approach control 0 5 SP1 mode selection ON OFF or proportional cycle time on oF SP1 offset m...

Page 84: ...r level currently selected 2 17 3 Level 3 Parameters and Values Parameter Description Default Value SP1 output device type SSd1 SP2 output device type read only SSd2 Sensor burn out protection type up...

Page 85: ...The reference temperature displayed on the temperature controller may not be the same as the temperature displayed on the Horizon Series monitor Allow the temperature to stabilize for 10 minutes prior...

Page 86: ...r 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 w...

Page 87: ...des on the right side of the chamber 3 Press short side of diffuser and unsnap it to remove from the light base 4 Rotate defective light bulb and remove from the sockets 5 Insert new light bulb into t...

Page 88: ...bottle 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...

Page 89: ...ler 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 c...

Page 90: ...basket is misaligned or not level Confirm both slides for the drawer or basket are mounted at the same height Door does not open easily Debris in the hinges Confirm the hinges are free of debris Clea...

Page 91: ...faulty Confirm the temperature controller is operating correctly Replace it if necessary Condensing unit fan is not running Check the condensing unit fan connections Replace the fan motor if necessary...

Page 92: ...tem is faulty Confirm the circuit board and line connections are functioning correctly Control board is faulty Replace control parts with those that are included in the control and display board kit A...

Page 93: ...utlet Repair the original outlet or connect to a different outlet if necessary Power cord is faulty Confirm the power cord is connected securely Secure the power cord if necessary Power supply board i...

Page 94: ...te current For 115 V refrigerators the current should be approximately 0 43 A to 0 55 A For 230 V refrigerators the current should be approximately 0 21 A to 0 35 A Humid air is entering the chamber C...

Page 95: ...ezel with chart recorder door Contact Helmer Technical Service B Chart recorder door Contact Helmer Technical Service C Horizon Series display Refer to subsequent section s for part numbers K D Chart...

Page 96: ...cluded in the control and display board kit K D Interface cable 400502 1 AF Not shown Display assembly 400509 1 Includes LCD board and touchpad K NOTICE The Horizon display assembly is sensitive to st...

Page 97: ...dels 20 2 Top A B C Top features Label Description Part Number Schematic Label A Monitoring system backup batteries 715031 AE B Compressor unit Contact Helmer Technical Service A C Condensing unit fan...

Page 98: ...ent section s for part numbers B Circuit breaker 6 A Single door 230 V models 120429 P Circuit breaker 7 A Double door 230 V models 120428 P C Condensate evaporator kit Includes the condensate evapora...

Page 99: ...mperature controller programmed 400422 1 B B Compressor relay 120426 AA C Power line filter 120400 AK D Alarm buzzer 120457 D E Control board Included in the control and display board kit E F Power su...

Page 100: ...probe 400855 1 AI B Chamber probe 800117 1 AB C Probe bottle and glycerin kit 400922 1 D Unit cooler Refer to subsequent section s for part numbers AG E Door switch 120380 I F Door Refer to subsequent...

Page 101: ...400507 1 M Not shown Light bulb 120409 20 4 2 Unit Cooler A B Left Unit cooler single door model shown Center and right Unit cooler parts Label Description Part Number Schematic Label A Unit cooler f...

Page 102: ...20 and 245 models 400414 1 125 and 256 models 400414 2 C Roll out basket assembly includes 2 slides and hardware 111 models 400751 1 120 and 245 models 400415 1 125 and 256 models 400415 2 D Drawer as...

Page 103: ...on Part Number A Door lock 220374 B Door handle pad 320684 1 C Hinge bearing 220375 D Upper hinge bracket Right hinge 400376 1 Left hinge 400376 2 E Door gasket 111 models 321082 1 120 125 245 and 256...

Page 104: ...TTERY X CHART RECORDER FLASH CARD PORT LINE L1 NEUTRAL L2 1 NOT USED 2 NOT USED 4 POWER SUPPLY BOARD 5 TEMPERATURE CONTROLLER 6 CHART RECORDER TRANSFORMER 8 RIGHT DOOR HEATER 7 COMPRESSOR RELAY 9 LEFT...

Page 105: ...een System Options option SYSTEM OPTIONS screen Alarm Setpoints option SET ALARM SETPOINT screen Temperature Calibration option TEMPERATURE CALIBRATION screen Factory Default Settings option FACTORY D...

Page 106: ...IGURATION screen Clock Mode display Date Format display Door Ajar Timeout display Pwr Failure Timeout display High Alarm Setpoint display Low Alarm Setpoint display Alarm Volume display Alarm Pulse di...

Page 107: ...ttery 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...

Page 108: ...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...

Page 109: ...ss 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 gu...

Page 110: ...front brackets from standards 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 b...

Page 111: ...OWN ARROW MUTE ALARM button Decreases a temperature setting Also mutes the audible alarm for five minutes H SEL button Toggles between alarm monitor and control modes I ALARM DISABLE key switch Disabl...

Page 112: ...adjustment value is 1 0 C 2 On the monitoring system press and release SEL to change to Control mode CONTROL lamp will illuminate 3 Press and hold SET to display the reference temperature 4 Hold SET a...

Page 113: ...models is 2 0 C Setpoint can be changed from 40 0 C to 25 0 C Change the setpoint 1 Hold Up Arrow and Down Arrow for three seconds MONITOR lamp will flash to indicate entry into program mode 2 Press S...

Page 114: ...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 temperatu...

Page 115: ...efrigerator has alarms for chamber temperature power failure and door open time 24 5 1 Chamber Temperature Alarm IMPORTANT Perform the low alarm test before the high alarm test to control the temperat...

Page 116: ...Audible power failure alarm will cease and PoFF will clear from the display 24 5 3 Door Open Alarm Factory set to three minutes Value can not be changed NOTICE Before testing alarms protect items in...

Page 117: ...non CFC R 134A refrigerant Full initial refrigerant charge varies by model and power requirements which can be found on the product specification label Model Voltage Initial Charge 111 Any 7 5 oz 213...

Page 118: ...es on the right side of the chamber 3 Press short side of diffuser and unsnap it to remove from the light base 4 Rotate defective light bulb and remove from the sockets 5 Insert new light bulb into th...

Page 119: ...in Clean and refill bottle 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...

Page 120: ...ler 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...

Page 121: ...ebris Clean if necessary Drawer slides are not lubricated Using a lightweight oil lubricate the bearings in the slides Drawer or basket is misaligned or not level Confirm both slides for the drawer or...

Page 122: ...tor if necessary Unit cooler fan is not running Check the voltage to the fan when door switch is activated Replace the fan motor or door switch if necessary Compressor motor has seized Replace the com...

Page 123: ...models Replace the defrost timer 26 3 Alarm Activation Problems Problem Possible Cause Action Refrigerator is in an alarm condition but alarms are not audible Alarm system is faulty Confirm the circui...

Page 124: ...l outlet or connect to a different outlet if necessary Power cord is faulty Confirm the power cord is connected securely Secure the power cord if necessary Temperature control transformer is faulty Re...

Page 125: ...he doors are aligned closing tightly and sealing correctly Contact Helmer Technical Service to correct issues as necessary Excessive water in the chamber Humid air is entering the chamber Confirm the...

Page 126: ...ing parts or after extended door opening 27 1 Front A B C D Front features Label Description Part Number Schematic Label A Chart recorder and chart recorder door 400409 2 X B Laboratory display Refer...

Page 127: ...iew of display showing monitor control board Label Description Part Number Schematic Label A Touchpad 320770 1 B Light switch 120202 AJ C Monitor control board 120402 L 27 2 Top A B C Top features Lab...

Page 128: ...ox Refer to subsequent section s for part numbers B Circuit breaker 6 A Single door 230 V models 120429 P Circuit breaker 7 A Double door 230 V models 120428 P C Condensate evaporator kit Includes the...

Page 129: ...1 Electrical Box A B C Electrical box features HHB120 model shown Label Description Part Number Schematic Label A Compressor relay 120426 AA B Power line filter 120400 AK C Alarm buzzer 120160 D Not...

Page 130: ...robe 400855 1 AI B Chamber probe HB model 401096 1 HPR HLR and HHB models 400512 1 AB C Probe bottle and glycerin kit 400922 1 D Unit cooler Refer to subsequent section s for part numbers AG E Door sw...

Page 131: ...2 230 V 400507 1 M Not shown Light bulb 120409 27 4 2 Unit Cooler A B Left Unit cooler single door model shown Center and right Unit cooler parts Label Description Part Number Schematic Label A Unit c...

Page 132: ...400414 1 125 and 256 models 400414 2 C Roll out basket assembly includes 2 slides and hardware 111 models 400751 1 120 and 245 models 400415 1 125 and 256 models 400415 2 D Drawer assembly includes 2...

Page 133: ...rts Label Description Part Number A Door lock 220374 B Door handle pad 320684 1 C Hinge bearing 220375 D Upper hinge bracket Right hinge 400376 1 Left hinge 400376 2 E Door gasket 111 models 321082 1...

Page 134: ...NIT COOLER FAN DEFROST MODE 4 TEMP CONTROL TRANSFORMER 5 NOT USED 6 CHART RECORDER TRANSFORMER 8 RIGHT DOOR HEATER 7 COMPRESSOR RELAY 9 LEFT DOOR HEATER 12 CONDENSATE EVAPORATOR 10 NOT USED 11 LIGHT S...

Page 135: ...1 DEFROST TIMER 2 NOT USED 4 TEMP CONTROL TRANSFORMER 5 NOT USED 6 CHART RECORDER TRANSFORMER 8 RIGHT DOOR HEATER 7 COMPRESSOR RELAY 9 LEFT DOOR HEATER 12 CONDENSATE EVAPORATOR 10 NOT USED 11 LIGHT S...

Page 136: ...TEMP CONTROL TRANSFORMER 5 NOT USED 6 CHART RECORDER TRANSFORMER 8 RIGHT DOOR HEATER 7 COMPRESSOR RELAY 9 LEFT DOOR HEATER 12 CONDENSATE EVAPORATOR 10 DOOR SWITCH 11 LIGHT SWITCH 3 POWER LINE FILTER 1...

Page 137: ......

Page 138: ...HELMER SCIENTIFIC 14400 Bergen Boulevard Noblesville IN 46060 USA PH 1 317 773 9073 FAX 1 317 773 9082 www helmerinc com...

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