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NuAire NU-99100J, Operation & Maintenance Manual, Page: 1 / 24

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NuAire NU-99100J Operation & Maintenance Manual Download Page 1

OM0306 

Series A 

Revision 1 

December 2020 

 

 

NU-99100JGA: (115 VAC Only)

 

NU-99100JE: (230 VAC Only) 

 

NuAire, Inc. 

2100 Fernbrook Lane 

Plymouth, MN 55447 

Toll-Free: 1-800-328-3352 

Minnesota: (763) 553-1270 

Fax: (763) 553-0459

 

 

 

 

 

BLIZZARD ULTRA LOW TEMPERATURE 

UNDER COUNTER FREEZER 

NU-99100JGA

 

/

 

NU-99100JE 

O

PERATION 

&

 

M

AINTENANCE 

M

ANUAL

 
 

Summary of Contents for NU-99100J

Page 1: ...15 VAC Only NU 99100JE 230 VAC Only NuAire Inc 2100 Fernbrook Lane Plymouth MN 55447 Toll Free 1 800 328 3352 Minnesota 763 553 1270 Fax 763 553 0459 BLIZZARD ULTRA LOW TEMPERATURE UNDER COUNTER FREEZ...

Page 2: ...g ALL 13 7 5 User Parameter Adjustment 13 7 6 USB Data Export 14 7 7 General Setting Notes 14 8 0 Display and Alarms 15 8 1 Alarm Table 16 8 2 Automatic Alarm Recovery Time Setting 17 8 3 Remote Alarm...

Page 3: ...quirements of MDD 93 42 EEC annex V 2 2 Precautions for Safe Operation When CO2 LN2 backup is activated the location place must be well ventilated Increased CO2 in the air may be harmful and even fata...

Page 4: ...ing the power cord from the socket grip the plug itself and pull it out Do not pull on the power cord as this may strip the wires out of the plug creating the risk of electric shock and re Should ther...

Page 5: ...nel It is recommended the unit be installed and maintained by a professional to avoid any electrical hazard The replacement of any spare parts battery etc shall be conducted by technicians approved by...

Page 6: ...ported compressor ensuring stronger refrigeration capacity o High performance insulation layer ensuring excellent thermal insulation e ect o Unique multi layer door sealing structure and anti condensa...

Page 7: ...ever use gasoline or solution with volatile chemicals to clean plastic or rubber parts After the freezer runs for some time a layer of frost usually forms on the interior liner and inner doors When th...

Page 8: ...to freely be transferred in or out of the room if necessary This is to allow the unit to be repaired easily and timely to avoid damage to property The location for installation should be at and rm Th...

Page 9: ...extend them to level the unit 5 Acclimation Period After adjusting and cleaning the unit do not turn on the power The freezer needs to acclimate to its surroundings for at least 24 hours to ensure pr...

Page 10: ...desired temperature Do not load the unit with any samples Power up the unit to let it run down to 60 C Let it run at 60 C for 8 hours then lower it to 80 C Observe the unit performance for 24 hours fo...

Page 11: ...quate performance The freezer and the compressors can become overheated Samples must be loaded in batches while gradually decreasing temperature setting The process should be repeated until the nal te...

Page 12: ...OM0306 PAGE 12 OF 24 REV 1 DECEMBER 2020 6 0 Refrigerator Components 6 1 Control Panel Outer Door Support Feet Condenser Filter Grill Door Handle W Lock Control Panel...

Page 13: ...state press Set to select the ALL setting and make current set ALL value ash 2 Press Up or Down to adjust the set ALL value The modi cation scope shall be 99 C set temperature inside the box 5 C 3 Aft...

Page 14: ...by 1 Press UP or Down for each 1s to increase or decrease by 1 When continuously increasing or decreasing by 10 press UP or Down to for each 1s to increase or decrease by 10 7 CL1 IC card logout with...

Page 15: ...ons of the buttons Set enter the unlock password to unlock the keyboard long press for 5s or con rm the settings Up and Down select parameters or increase decrease parameter values and can be cycled w...

Page 16: ...e battery voltage is less than 10 5V Alarm light ickers Lithium battery when the battery is connected after the battery is charged for 24 hours the battery voltage is less than 9 0V Alarm light ickers...

Page 17: ...g and Maintenance 9 1 Cleaning the Components To prevent electric shock or injury to operators the AC power supply to the freezer must be disconnected completely prior to any repair and maintenance wo...

Page 18: ...ntainer for temporary storage 3 Turn o the power supply 4 Open the outer door and inner doors to let the unit thaw 5 Use a dry cloth to soak up any water on the oor of the unit before restarting the u...

Page 19: ...wdriver to remove the 4 screws on the cover of the control box 4 Unplug the connecting terminals from battery 5 Remove the bracket that fastens the battery Then remove the battery 6 Follow regulations...

Page 20: ...onal Components 11 1 Storage Shelf and Case If the unit is used to store small samples storage racks and boxes provide more efficient use of internal space Model Storage Rack A B optional Storage box...

Page 21: ...outer door is closed Frost between the box and the door gasket may damage the sealing of the door Is the condenser lter screen clogged Is the temperature set correctly Is the box away from the direct...

Page 22: ...OM0306 PAGE 22 OF 24 REV 1 DECEMBER 2020 13 0 Refrigeration Principle and Circuit Diagram 13 1 Refrigeration Schematic Diagram...

Page 23: ...OM0306 PAGE 23 OF 24 REV 1 DECEMBER 2020 13 2 Circuit Diagram...

Page 24: ...r controller Temperature Display Digital display Noise 46 8 dB A Temperature Sensor Platinum resistor Pt100 Alarm Device High low temperature alarm sensor fault alarm power failure alarm dirty condens...

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