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Quality Refrigeration
OWNER’S MANUAL
Instructions for the installation, operation
and maintenance of Traulsen:
TU Series Full-Size Undercounter Refrigerators
TU044HT, TU072HT & TU100HT
TU Series Full-Size Undercounter Freezers
TU044LT & TU072LT
This Traulsen unit is built to our highest quality standards. We build our refrigerators and freezers this way as a matter of
pride. This philosophy has made Traulsen the leader in commercial refrigeration since 1938. We thank you for your choice
a
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TABLE OF CONTENTS I. THE SERIAL TAG Page 1 e-Enter The Service Access Page 8 II. RECEIPT INSPECTION Page 2 f-Service Parameters Page 9 III. INSTALLATION g-Adjusting Thermostat Set Point High Page 9 a-Location Page 2 h-Adjusting Thermostat Set Point Low Page 10 b-Packaging Page 2 i-Changing The Temperature Scale Page 10 c-Adjusting the Casters Page 2 j-Setting The 24-Hour Clock Page 11 d-Cord & Plug Page 2 k-Setting The
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II. RECEIPT INSPECTION III. INSTALLATION (continued) All Traulsen products are factory tested for performance III. c - INSTALLING/ADJUSTING LEGS OR CASTERS: and are free from defects when shipped. The utmost care To install legs or casters, slide leg or caster into the caster has been taken in crating this product to protect against channel from the side of the unit without the refrigeration damage in transit. system. You should carefully inspect your unit for damage during To adjust
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V. CARE & MAINTENANCE IV. OPERATION IV. b - FREEZERS (continued): IV. a - REFRIGERATORS: During freezer defrost operation, heat is confined to the Both refrigerators and Freezers do not require manual coil enclosure to prevent any significant rise in tempera- defrosting. During normal operation, a refrigerator con- ture within the food zone. The fan delay control function tinuously circulates above freezing cabinet air through the upon termination of a defrost cycle is two-fold. First
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V. CARE & MAINTENANCE-(continued) VI. DRAWERS V. b - REPLACING THE GASKETS: VI. a - REMOVING THE DOOR AND INSTALLING To remove the gasket to be replaced, grasp it firmly by one DRAWERS: corner and pull it out. Before attempting to install a new Doors are supplied standard on all TU Series Full-Size Un- gasket, both the unit and the gasket itself must be at room dercounter models. However, we have engineered our temperature. Insert the four corners first by using a rubber models with a
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VII. MICROPROCESSOR CONTROL Your new refrigerator or freezer cabinet is equipped with a state-of-the-art microprocessor control, which precisely regulates operation and provides alarms when problems occur. It is supplied from the factory completely ready for use and requires no adjustments, but without the audible alarms activated. See pages 6 thru 16 for more information. INTELA-TRAUL °F °C SET MICROPROCESSOR CONTROL VII. a - CONTROL FEATURES: 1- Internal Time Clock •
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VII. MICROPROCESSOR CONTROL (continued) VII. b - ALARM EXPLANATIONS: *NOTE: Explanation of alarms assume the audible alarm style is set at a 3-second burst or a continuous audible alarm. References to the audible alarm do not apply if the audible alarm style is set to OFF (Refer to page 16 for setting the audible alarm style). High Cabinet Air Temperature: The audible alarm will sound and the display will read HI CAb when the temperature inside the cabinet rises above a pre-programme
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VII. MICROPROCESSOR CONTROL (continued) VII. c - CONTROL PANEL DIAGRAM: 0 0 F LED & C LED DEFROST SYBMBOL SET BUTTON INTELA-TRAUL SET °F °C UP BUTTON & DOWN BUTTON RED ALARM ALARM CANCEL BUTTON LIGHT LED DISPLAY VII. d - NOTES TO THE USER: You only have 20-30 seconds between button pushes. If you take longer than 30 seconds, the controller will revert back to displaying the cabinet temperature. If you enter the wrong security code, the controller will revert back to displ
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VII. MICROPROCESSOR CONTROL (continued) VII. e - ENTER THE SERVICE ACCESS: Use the security code 0, A, 1 and the following instructions: Press the set button . The display will read Service Access. SET Press the set button . SET The display will show three zeros with the left zero flashing Press the set button . SET The display will show three zeros with the center
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VII. MICROPROCESSOR CONTROL (continued) VII. f - SERVICE PARAMETERS: Listed below are the available parameters in the order they appear, using the down arrow key on the controller. You can use either the up or down arrow keys to scroll through the options. Thermostat Set Point High Defrost Lockout 3 Thermostat Set Point Low Defrost Lockout 4 Temperature Scale Dew Point Compensation Factor Time (24-hour clock) Room Temperature Offset Date (month-day-year) Audib
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VII. MICROPROCESSOR CONTROL (continued) VII. h - ADJUSTING THERMOSTAT SET POINT LOW: This parameter sets the low point of the desired cabinet temperature range. Typically, freezers will range from –6° F to -4° F (-21° C to –20° C) and refrigerators will range from 32° F to 34° F ( 0° C to 1° C) for this parameter setting. This parameter is preset at the factory and does not have to be adjusted unless the customer chooses to do so. Note: Set Point Low and Set Point High cannot be set to the sa
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VII. MICROPROCESSOR CONTROL (continued) VII. j - SETTING THE 24-HOUR CLOCK: The internal time clock must be set in order for the data storage memory to correctly log events and to allow any defrost lockout to occur at the correct time of day. If the clock is not set, the control assumes the time is 12 am at the time power is supplied to the unit. The hours on a 24-hour time clock read the following way: H01 = 1:00 a.m. H07 = 7:00 a.m. H13 = 1:00 p.m. H19 = 7:00 p.m. H02 = 2:00 a.m. H08
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VII. MICROPROCESSOR CONTROL (continued) VII. k - SETTING THE DATE: The date must be set in order for the data storage memory to correctly log events. Follow the instructions to enter the service access code on page 8. When the control displays Thermostat Set Point High, press the down arrow key until the control display reads Date. Press the set button . The display will show SET
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VII. MICROPROCESSOR CONTROL (continued) VII. m - STARTING A MANUAL DEFROST CYCLE: This parameter allows a service technician to start a defrost cycle at any time. This parameter will override any lock- out settings. Follow the instructions to enter the customer access code on page 8. When the control displays Thermostat Set High, press the down arrow key until the control display reads Start Manual Defrost. Press the
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VII. MICROPROCESSOR CONTROL (continued) VII. n - SETTING THE DEFROST LOCKOUTS: The defrost lockout parameters allow the customer to prevent the unit from going into a defrost cycle for two hours during a set time frame. Customers can set up to four defrost lockout parameters. They are all programmed the same way. The parameters will be set for the time the lockout is to start. The controller automatically calculates 2 hours from that setting. The options are similar to the 24-hour clock setti
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VII. MICROPROCESSOR CONTROL (continued) VII. o - ADJUSTING THE DRAWER PERIMETER HEATERS: This parameter allows the customer to turn ON and OFF the anti-condensate door/drawer perimeter heaters. This param- eter is set to the highest setting (100) at the factory so that the door/drawer heaters stay on continuously. If you choose to have the door/drawer heaters cycle on and off, lower this parameter to approximately 30. If condensation forms around the door/drawers, increase the parameter until
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VII. MICROPROCESSOR CONTROL (continued) VII. q - SETTING THE AUDIBLE ALARM STYLE: ® These parameters will allow the customer to turn on/off the audible alarm feature on the INTELA-TRAUL control. The audible alarm is preset from the factory to OFF. The customer can choose between an audible alarm that sounds for 3 seconds then automatically turns off, or a continuous audible alarm that must be manually acknowledged. Regardless of this feature’s setting, visual alarm text will display when cond
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VIII. WIRING DIAGRAM Note: Refer to the wiring diagram below (applies to refrigerators and freezers units) for any service work performed by a qualified technician. -17-
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IX. TROUBLE SHOOTING GUIDE PROBLEM POSSIBLE SOLUTION 1. Condensing unit fails to start. a. Check if cord & plug has been disconnected. b. Clean Condenser 2. Condensing unit operates for prolonged a. Are doors closed properly? periods or continuously. b. Dirty condenser or filter. Clean properly. c. Evaporator coils iced. Needs to defrost. See instructions for set- ting a manual defrost cycle p. 13. 3. Food Compartment is too warm.
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X. SERVICE ASSISTANCE X. a - SERVICE INFORMATION: Before calling for service, please check the following: Is the electrical cord plugged in? Is the fuse OK or circuit breaker on? Clean condenser coil Is the power switch on? Reset microprocessor control values to factory defaults. If after checking the above items and the unit is still not operating properly, please contact an authorized Traulsen service agent. A complete list of authorized service agents was provided along with you
