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Norlake LogiTemp Plus Operation Manual

Reverse cycle defrost electronic controller system
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Operations Manual For
LogiTemp® Plus Reverse Cycle Defrost Electronic Controller System
Included In SciPak™ Self-Contained Refrigeration Systems
6/23, 171606 ©2023 Norlake, Inc. All rights reserved.

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Summary of Contents for Norlake LogiTemp Plus

  • Page 1 Operations Manual For LogiTemp® Plus Reverse Cycle Defrost Electronic Controller System Included In SciPak™ Self-Contained Refrigeration Systems 6/23, 171606 ©2023 Norlake, Inc. All rights reserved.
  • Page 2 Refrigerated Solutions Group (RSG) and must be explicitly written. There are no implied flexibilities designed for this product. • Due to continuous product enhancements, RSG reserves the right to make engineering changes and change specifications for product improvement without notice. 6/23, 171606 ©2023 Norlake, Inc. All rights reserved.

  • Page 3: Table Of Contents

    Factory-Installed Parts ..............................22 Eliminated Parts................................22 Defrost Time ................................... 22 ELECTRICAL AND WIRING ..............................22 Typical Wiring Diagrams ..............................23 TYPICAL SET POINTS FOR CONTROLLER ..........................26 TROUBLESHOOTING GUIDE ..............................27 6/23, 171606 ©2023 Norlake, Inc. All rights reserved.

  • Page 4: Introduction

    Introduction Thank you for purchasing Norlake Scientific equipment. This manual contains important instructions for using the LogiTemp® Plus electronic controller system. Please read it carefully. DANGER Improper or faulty hook-up of electrical components in the refrigeration units can result in severe injury or death.

  • Page 5: Warning Labels And Safety Instructions

    Solutions refrigeration system at the factory. Follow all warning label instructions. If any warning or safety labels become lost or damaged, call our customer service department at 800-684-8988 for replacements. This label is on the housing of the refrigeration system typically located on the evaporator coil. 6/23, 171606 ©2023 Norlake, Inc. All rights reserved.

  • Page 6: Applications

    Applications LogiTemp® Plus systems are designed to control SciPak™ refrigeration Systems for freezer and cooler applications. Each system contains a condensing unit, evaporator(s) with LogiTemp Plus control board(s), electric expansion valve(s), pressure transducers, temperature sensors, and reverse cycle valve. Figure 1 below shows where the LogiTemp Plus controller is mounted on the system.

  • Page 7: Logitemp® Plus Description

    LogiTemp Plus controller. • One Ethernet Port is used for connecting the edge manager (router) in the control panel to the LogiTemp Plus controller. This is used in unison with the iPad for an interface for the user to control the system.

  • Page 8: Factory-Mounted Parts

    • An Edge Manager (router) is installed in the accompanying control panel so that the customer can easily access the home page and setpoints of the LogiTemp Plus controller. 6/23, 171606 ©2023 Norlake, Inc. All rights reserved.

  • Page 9: Logitemp Plus Features

    • The room temperature sensor replaces the conventional temperature control. The temperature is set with the push buttons on the LogiTemp Plus remote display or through its web page. The default temperature must be checked during the first startup of the machine against the actual application temperature. The default must be reset to the actual application temperature if there is a discrepancy.

  • Page 10: Off Mode

    (HoP). • When the operating suction pressure is lower than HoP, it will go back to superheat control. Suction pressure is used to calculate saturated 6/23, 171606 ©2023 Norlake, Inc. All rights reserved.

  • Page 11: Defrost Mode

    • A demand defrost scheme to detect the frost build-up and the criteria to start a defrost are programmed in LogiTemp® Plus. • Unlike scheduled defrost, LogiTemp Plus with demand defrost is really an energy saver. If no selection is made, the controller will automatically select demand defrost when the power is applied to the controller.

  • Page 12: Manual Defrost

    • After selecting the demand defrost, if the elapsed time since the last defrost has been a selectable time (Int) from 8 hours (480) to 72 hours (4320), Maximum Defrost Interval, LogiTemp Plus will go into defrost to ensure a proper oil return.

  • Page 13: Definition Of Onboard Symbols

    Onboard 3-Digit Display Description LogiTemp® Plus Indicates the status of Start Up Mode CFn Check fan working status Check pressure transducer Indicates the pressure transducer is working as it should 6/23, 171606 ©2023 Norlake, Inc. All rights reserved.
  • Page 14 Aux input 3’s status (see below for more details) connected to black connector labeled ‘AUX3’ first octet of ip address second octet of ip address third octet of ip address fourth octet of ip address firmware version 6/23, 171606 ©2023 Norlake, Inc. All rights reserved.

  • Page 15: Alarm Display

    Remote 3-Digit Display Description pressure sensor alarm Suction Temp sensor alarm Air Temp sensor alarm coil sensor alarm low superheat alarm high air temperature alarm low air temperature alarm low suction pressure alarm 6/23, 171606 ©2023 Norlake, Inc. All rights reserved.

  • Page 16: Setting Parameters By Onboard Pushbuttons

    • When the desired value is displayed, press and hold the ‘ENTER’ button until the name of the set point is displayed (about 3 seconds). • At any time, pressing the ‘BACK’ button will escape to the step before. 6/23, 171606 ©2023 Norlake, Inc. All rights reserved.

  • Page 17: Manual Valve

    The outlet sensor is mounted on the suction line at the outlet of the evaporator. These can be seen in Figure 3 on the next page. The second sensor shows the room air temperature sensor location. 6/23, 171606 ©2023 Norlake, Inc. All rights reserved.

  • Page 18: Sensor Service Instructions

    Submerge the sensor into the water. Check the display for the value. If the sensor shows 32°F, it is working properly. Compare the temperature and resistance in Chart A on the next page. 6/23, 171606 ©2023 Norlake, Inc. All rights reserved.

  • Page 19: Pressure Transducer

    The GROUND is connected to terminal ‘5-‘on the board. The SIGNAL lead is connected to terminal ‘sig’ on the board. The +VDC lead is connected to terminal ‘5+’ on the board. Chart B shows the characteristics of the pressure transducer. NOTE: The pressure transducer cannot be repaired but replaced only. 6/23, 171606 ©2023 Norlake, Inc. All rights reserved.
  • Page 20 • Cat5/E communication cable should be rated 300 V 80oC or higher. If the wire is rated lower than 300 V, a separate conduit must be used for communication cables. 6/23, 171606 ©2023 Norlake, Inc. All rights reserved.

  • Page 21: Reverse Cycle Defrost

    A reverse cycle valve is already factory-installed on the condensing unit. The valve’s primary function is to reverse the direction of the refrigerant flow during defrosting. When the LogiTemp Plus demand defrost determines that a defrost is necessary, the reverse cycle valve is activated, and the high-temperature refrigerant flow is reversed.

  • Page 22: Factory-Installed Parts

    800-684-8988 for free training and support. Wiring Diagrams The wiring diagrams included in the next section are for reference. Note: For feature-specific configuration, please refer to the wiring diagram in the actual system for installation. 6/23, 171606 ©2023 Norlake, Inc. All rights reserved.

  • Page 23: Typical Wiring Diagrams

    SciPak™ Medium Temp Refrigeration System (115V) 6/23, 171606 ©2023 Norlake, Inc. All rights reserved.
  • Page 24 SciPak™ Medium Temp Refrigeration System (230V) 6/23, 171606 ©2023 Norlake, Inc. All rights reserved.
  • Page 25 SciPak™ Low Temp Refrigeration System (230V) 6/23, 171606 ©2023 Norlake, Inc. All rights reserved.

  • Page 26: Typical Set Points For Controller

    Temp Alarm Delay Door Open Alarm Aux 1 Aux 1 State Aux 2 Aux 2 State Aux 3 Aux 3 State 2nd Room T. Air Tep Diff. Clear Alarms Bonding Smart Acess Client Mode 6/23, 171606 ©2023 Norlake, Inc. All rights reserved.

  • Page 27: Troubleshooting Guide

    • Loose connection • Tighten the terminals • Incorrect set-up • Check the setting and correct it Email failure alarm(email not sent) • Incorrect set-up • Check the set-up and correct it 6/23, 171606 ©2023 Norlake, Inc. All rights reserved.
  • Page 28 RSG technical service department immediately. Refrigerated Solutions Group 891 County Road U Hudson, WI 54016 800-477-5253 - Norlake Scientific Sales 800-388-5253 - Norlake Scientific Parts/Service rsgservice@refsg.com 6/23, 171606 ©2023 Norlake, Inc. All rights reserved.

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