background image

 

5

 

Set the high temperature alarm and the low temperature alarm. 

1.  Press the High Alarm button and the corresponding LED will start flashing 

2. Use the 

 and the 

 buttons to change the alarm temperature. 

3.  Press the High Alarm button again to lock in the desired alarm.  The LED will 

stop flashing. 

4.  Follow the same steps for the low temperature alarm using the Low Alarm 

button. 

 

Pressing and holding the 

 and the 

 buttons cause a rapid increase or decrease in 

the value on the display.  This can be used for large changes in the temperature 
settings.  Also, after the High Temp, the Low Temp, the High Alarm, or the Low 
Alarm button is pressed, the user has 15 seconds to press the 

 or the 

 buttons.  If 

no activity is detected, the control reverts to its main control activity while leaving the 
settings unchanged. 

 

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 reaches the upper temperature limit, the LR5 sends a signal to 
turn on the compressor, which cools the unit.  The compressor is kept running until 
the temperature reaches the cold setting.  When this lower temperature set point is 
reached the LR5 turns off the compressor.  The refrigerator/freezer warms over time 
and the process continues. 

 

The LR5 TempGuard records the warmest and the coldest temperatures seen by the 
control.  To access these temperatures, press the 

 button for the warmest 

temperature or press the 

 button for the coldest temperature.  To clear out the 

warmest and coldest temperature, press both 

 and 

 buttons at the same time and 

hold them until the display blinks (approximately 5 seconds).  The warmest and 
coldest temperatures are reset to equal the High Temp and the Low Temp settings. 

 

 
 
 
 

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...

Reviews: