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Wiring the LR5 TempGuard: 

 

The LR5 Tempguard is supplied with a green 7-contact plug to make wiring easy.  A 
plug legend is attached to the back plate of the control.  It is summarized below: 

 

Pin 1 

 

AC Line   (polarity does not matter) 

Pin 2 

 

AC Line   (polarity does not matter) 

Pin 3 

 

Door Alarm  (polarity does not matter) 

Pin 4 

 

Door Alarm  (polarity does not matter) 

Pin 5 

 

Remote alarm    (normally open contact) 

Pin 6 

 

Remote alarm    (common) 

Pin 7 

 

Remote alarm    (normally closed contact) 

 

AC Line

 - Power wired into AC line of the system. 

 

Door alarm

 - The door alarm circuit on the LR5 detects an open or closed circuit.  

An open circuit indicates that a door has been opened while a closed circuit 
indicates that all doors are closed.  The circuit should be wired in series through 
switches attached at each door. 

  

Remote Alarm

  -

 A relay is provided on the LR5 to signal an error condition.   

Continuity exists between pins 6 & 7 in a normal condition.  An error condition 
provides continuity between pins 5 & 6. 

Summary of Contents for Freezer PLUS Series

Page 1: ...Make thorough damage notation on your delivery receipt and have driver acknowledge by signature and date Send a written request asking for an inspection report from carrier Include the name of carrie...

Page 2: ...ions 1 RECEIVING 1 INSTALLATION AND STARTING INSTRUCTIONS 1 OPERATING INSTRUCTIONS 2 COMPRESSOR CONDENSER 2 SERVICE 2 OPERATION MANUAL FOR LR5 TEMPGUARD REFRIGERATION CONTROL 3 Lab Research Products P...

Page 3: ...inches of air flow in back and 1 to 2 inches on the sides and top Leveling legs are required in front only Unit may have a slight tilt from front to back after legs are installed This is acceptable a...

Page 4: ...ressor is hermetically sealed and will require no attention The condenser is located between the inside and outside walls of the freezer and also requires no attention Its natural heat keeps the exter...

Page 5: ...3 Operation Manual for LR5 TempGuard Refrigeration Control...

Page 6: ...re within the limits set by the user The control settings are easily adjusted through the LR5 TempGuard front panel and the control remembers the coldest and the warmest temperatures achieved in opera...

Page 7: ...ed How the LR5 Control works The LR5 TempGuard control continuously monitors the temperature of the refrigerator freezer through its sensor assembly When the temperature warms to the point where it re...

Page 8: ...D and the beeper Control Limits The High Temp and Low Temp can be adjusted within the entire range as desired The range varies depending on the model of refrigerator or freezer that was purchased The...

Page 9: ...ture gradient throughout the inner chamber The uniformity of the temperature throughout the inner chamber can be influenced by many factors such as location of the sensor air flow patterns mass of the...

Page 10: ...n contact Pin 6 Remote alarm common Pin 7 Remote alarm normally closed contact AC Line Power wired into AC line of the system Door alarm The door alarm circuit on the LR5 detects an open or closed cir...

Page 11: ...mpressor B Sensor Connector The LR5 sensor assembly connects here C Battery NiMH battery provides alarm capability when power is lost D 7 pin connector Wiring for LR 5 Tempguard system into connector...

Page 12: ...y output for remote alarm 12A max load for 120 VAC 10A max load for 240 VAC Visual red LED optional Audible optional Battery backed optional Door Open too long optional Temperature Detection DS1821 Di...

Page 13: ...ts Lab Research Products sole obligation under this warranty is limited to either repair or replacement of parts subject to the additional limitations below This warranty neither assumes nor authorize...

Page 14: ...cts at 800 648 4041 Lab Research Products shipping records showing date of shipment shall be conclusive in establishing the warranty period All claims should include model number of the refrigerator t...

Page 15: ...ll reach 30 C in less than four hours however let the chamber cool for 8 hours minimum to allow for total heat removal from the cabinet Again this is a manual defrost system If ice build up is present...

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