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Traulsen 789 manual

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Table of contents for the manual

  • Page 1

    INTELA-TRAUL ® Quality Refrigeration MASTER SERVICE MANUAL Form Number TR35705, revised 10/04 T raulsen 4401 Blue Mound Road - Fort Worth, T exas 76106 Phone: (800) 825-8220 or (817) 625-9671 Fax-Service (817) 740-6757 For All Full Size Undercounter, G-Series and R&A Series Refrigerator , Freezer , Dual-Temp and Hot Food Unit Controllers[...]

  • Page 2

    T ABLE OF CONTENTS -1- I. General Information a) How T o Use This Manual Page 2 b) About INTELA-TRAUL Page 2 c) Operating The Controller Page 2 II. Basic Service Procedures a) Adjusting The T emperature Page 3 b) Starting A Manual Defrost Cycle (R & A Series) Page 4 c) Starting A Manual Defrost Cycle (G-Series) Page 5 III. T roubleshooting a) C[...]

  • Page 3

    I. a - HOW T O USE THIS MANUAL: T raulsen provides this manual as an aid to the service technician in installation, operation, and maintenance of INTELA-TRAUL ® Controllers. When used properly , this service manual can help the service technician maintain, troubleshoot and diagnose most of the problems and malfunctions that may occur with the Cont[...]

  • Page 4

    Step 1: Press . Display will read “CUS.” Step 2: Press . Display will read “000” with the left digit flashing. Step 3: Press . Display will read “000” with the center digit flashing. Step 4: Press until the center digit changes to an “A”. Step 5: Press . Display will read “0A0” with the right digit flashing. Step 6: Press until [...]

  • Page 5

    -4- II. BASIC SERVICE PROCEDURES II. b - ST ARTING A MANUAL DEFROST CYCLE (R & A Series): The Display Will Read Step 1: Press . Display will read “CUS.” Step 2: Press . Display will read “000” with the left digit flashing. Step 3: Press . Display will read “000” with the center digit flashing. Step 4: Press until the center digit ch[...]

  • Page 6

    -5- II. BASIC SERVICE PROCEDURES II. c - ST ARTING A MANUAL DEFROST CYCLE (G-Series): The Display Will Read NOTE: Tr aulsen G-Series refrigerator models also include an off-cycle defrost feature, which occurs once an hour . This is indicated by the control display , is time terminated, and is generally of 3 - 10 minutes in dur ation. The defrost cy[...]

  • Page 7

    -6- III. TROUBLESHOOTING Step 1: Press . Display will read “CUS.” Step 2: Press . Display will read “000” with the left digit flashing. Step 3: Press . Display will read “000” with the center digit flashing. Step 4: Press until the center digit changes to an “A”. Step 5: Press . Display will read “0A0” with the right digit flash[...]

  • Page 8

    -7- III. TROUBLESHOOTING III. b - CHECKING FOR F AILED RELA YS: Checking For A Failed Internal Controller Relay: 1. Gain access to Controller compressor relay (see REMOV AL INSTRUCTIONS within this service manual for the specific type of controller your are servicing). 2. Locate the connector with the black/blue/purple wires and unplug it. Refer to[...]

  • Page 9

    -8- III. TROUBLESHOOTING III. c - CHECKING FOR OTHER F AILED COMPONENTS: Checking For A Failed Door Switch: 1. Remove the door(s) from the unit involved. 2. Locate the door switch, which is located behind the top door hinge(s). 3. Remove the switch from the cabinet. 4. Using a volt/ohm meter (VOM), check across the switch contacts. “ COM ” to ?[...]

  • Page 10

    Replace controller* (see note below). III. TROUBLESHOOTING III. d - CHECKING FOR ICED EV APORA T OR COIL: With evaporator clear of ice is there proper air-flow? Check evaporator blower motor for proper operation. Replace evaporator blower motor . Evap ’ r or ducting restriction. Remove restriction. Check DEF settings in controller parameters. Go [...]

  • Page 11

    III. TROUBLESHOOTING III. e - PROPER SENSOR PLACEMENT : Coil Sensor: The coil sensor should be inserted into the return air side of the evaporator coil. On freezer models only this sensor should be centered approximately 2 ” (two inches) from the top (horizontally through coil - centered in coil). On refrigerator models this sensor should be moun[...]

  • Page 12

    -1 1- IV . CONTROL ARCHITECTURE IV . a - R & A SERIES REFRIGERA T OR & FREEZER VERTICAL CONTROLLER: NOTES: IRDA not included on equipment manufactured with the MIT II control version. See parts assembly on pages 12-13.[...]

  • Page 13

    -12- IV . CONTROL ARCHITECTURE COIL SENSOR 3 P/N 337-60071-02 DISCHARGE SENSOR 3 P/N 337-60072-00 HORN 3 P/N 337-60070-00 CABINET SENSOR 3 P/N 337-60069-02 RH SENSOR 3 P/N 337-60080-00 (control versions H only) 3= Component can be ordered separately. HOLDER CLIP 1 P/N 337-60038-00 HOLDER CLIP 1 P/N 337-60038-00 H1 CONTROLLER 2 TRANSFORMER/ RS485 DO[...]

  • Page 14

    IV . CONTROL ARCHITECTURE IV . b - R & A SERIES REFRIGERA T OR & FREEZER VERTICAL CONTROLLER: Parts assembly for H1 thru MIT control versions only -13- 6 Door Switch 5 Line Neutral 4 Door Heater 3 Blower 2 Line Voltage 1 Defrost 337-60317-00 2 12 VDC Coil 1 12 VDC Coil DC 12-2001 HOLDER CLIP 337-60038-00 (set of two) CONTROL HEAD R/A 337-60[...]

  • Page 15

    -14- IV . CONTROL ARCHITECTURE IV . c - UC & UL (UNDERCOUNTER) HORIZONTAL CONTROLLER: COIL SENSOR 3 P/N 337-60071-02 DISCHARGE SENSOR 3 P/N 337-60072-00 HORN 3 P/N 337-60070-00 CABINET SENSOR 3 P/N 337-60069-02 3= Component can be ordered separately. BLUE SHRINK TUBE YELLOW SHRINK TUBE GREEN SHRINK TUBE HOLDER CLIP 1 P/N 337-60038-00 HOLDER CLI[...]

  • Page 16

    -15- IV . CONTROL ARCHITECTURE IV . c - UC & UL (UNDERCOUNTER) HORIZONTAL CONTROLLER : Parts assembly for MIT control version only HOLDER CLIP 337-60038-00 (set of two) CONTROL HEAD UC/UL 337-60321-00 HORN 337-60070-00 CABINET SENSOR - 337-60069-02 COIL SENSOR - 337-60071-02 DISCHARGE SENSOR - 337-60072-00 TO TRANSFORMER (not included for MIT I[...]

  • Page 17

    -16- IV . CONTROL ARCHITECTURE IV . d - G-SERIES REFRIGERA T OR & FREEZER VERTICAL CONTROLLER:[...]

  • Page 18

    -17- IV . CONTROL ARCHITECTURE IV . d - G-SERIES REFRIGERA T OR & FREEZER VERTICAL CONTROLLER:[...]

  • Page 19

    -18- IV . CONTROL ARCHITECTURE IV . e - R-SERIES HEA TED CABINET VERTICAL CONTROLLER: HOT FOOD CABINET ST ART -UP (pre-MIT version): When power is first applied to the unit, you must set the temperature by pressing the “ SET ” and “ UP ARROW ” buttons at the same time using equal pressure with both thumbs, until the temperature appears on t[...]

  • Page 20

    2 1= Set of two (can be ordered separately). 2= Requires unit model number and serial number to place order. -19- IV . CONTROL ARCHITECTURE HORN 337-60070-00 1 IV . e - R-SERIES HEA TED CABINET VERTICAL CONTROLLER: Parts assembly for H1 control versions only[...]

  • Page 21

    -20- IV . CONTROL ARCHITECTURE IV . e - R-SERIES HEA TED CABINET VERTICAL CONTROLLER: Parts assembly for MIT control versions only HOLDER CLIP 337-60038-00 (set of two) CONTROL HEAD HF 337-60320-00 HORN 337-60070-00 CABINET SENSOR - 337-60069-02 UNUSED TO TRANSFORMER (not included for MIT II versions) CONTROL CABLE 333-60228-00 RELAY BOX 337-60171-[...]

  • Page 22

    V. REMOV AL/INST ALLA TION V. a - ALL VERTICAL CONTROLLERS : To remove INTELA-TRAUL ® (p/n ’ s 337-60090-00, 337-60091-00 and 337-60092-00) and G-Series (p/n ’ s 337-60093-00, 337-60094-00 and 337-60095-00) V ertical Controller from the unit in which it is installed, proceed as follows (If unable to access the unit from the rear perform steps [...]

  • Page 23

    -22- V. REMOV AL/INST ALLA TION 4. At the top of the junction box, remove three (3) Phillips head screws. Set screws aside. 5. Locate one (1) Phillips head screw at bottom of junction box, and remove. Set screw aside. 6. Carefully slide junction box away from front of unit until all wiring and connections to the controller are exposed. 7. Locate al[...]

  • Page 24

    -23- V. REMOV AL/INST ALLA TION V. a - ALL HORIZONT AL CONTROLLERS : To remove INTELA-TRAUL ® (p/n ’ s 337-60096-00 and 337-60097-00) Horizontal Controller from the unit in which it is installed, proceed as follows: 1. Check to make sure that the power cable is disconnected from the wall. 2. Remove the four (4) black plugs that are located in ea[...]

  • Page 25

    -24- VI. PROBLEM DIAGNOSIS QUESTION CHECK SOLUTION VI. a - HOW T O USE THE TROUBLESHOOTING TREES: The troubleshooting trees on the following pages were developed as an aid to the service technician in determining the exact solution to a certain problem or mal- function. When used as designed, the troubleshooting trees can lead you from a general sy[...]

  • Page 26

    -25- VI. b- HIGH TEMPERA TURE ALARM Door(s) open longer than 5 minutes? Check compressor for low refrigerant. YES NO Close door(s). Excessive amount of hot product placed in unit? YES NO Reduce volume of hot product. Is evaporator coil frozen up? 1 YES NO Defrost evaporator coil. IS OK Check that sensor probe(s) properly connected. YES IS NOT OK Ad[...]

  • Page 27

    -26- VI. c- LOW TEMPERA TURE ALARM Is temperature setting for unit too low? Check for failed compressor relay . YES NO Increase operating temperature. Is there food product in the unit? YES NO Add product to the unit. IS NOT OK Replace failed controller or slave relay . IS OK Check that sensor probe(s) properly connected. YES IS NOT OK Replace fail[...]

  • Page 28

    -27- VI. d- DOOR OPEN ALARM Checkfor a failed door/ light relay . 2 Door(s) open longer than 5 minutes? 1 YES NO Close door(s). IS OK IS NOT OK Replace failed relay . Check for mis-wired door switch. Is there water in the door switch? YES NO Replace door switch. IS NOT OK Replace door switch. 1= H1 and MIT 1 control versions only . 2= See procedure[...]

  • Page 29

    -28- VI. e- POWER LOSS ALARM Is unit plugged in? NO YES Plug unit in. Has unit suffered a loss of power due to bad weather? YES NO Full operation will return when service is restored. Is unit receiving low voltage input? YES NO Contact local utility provider . Check for failed controller transformer . 1 IS NOT OK Replace controller transformer . 1=[...]

  • Page 30

    -29- VI. f- SYSTEM LEAK ALARM Does discharge temp rise 45 ° F within 5 min. of a ref ’ n. cycle start? N O YES Add refrigerant. Check compressor for low refrigerant. IS OK Check discharge line sensor . 1 Replace failed sensor . IS NOT OK IS NOT OK Are sensor probes properly connected? YES Check for disolocated sensor probe(s). YES NO Connect Pro[...]

  • Page 31

    -30- VI. g - CONDENSERCLEAN ALARM Is condenser coil dirty? YES NO Clean condenser coil. Is condenser fan disconnected? YES NO Properly conenct fan. Check forfailed condenser fan. IS NOT OK Replace fan. Are there any obstructions at top or rear of unit? YES NO Remove obstructions. Is the room temperature too warm? YES NO Lower the room temperature. [...]

  • Page 32

    Step 1: Press . Display will read “CUS.” Step 2: Press until “EnG” is displayed. Step 3: Press . Display will read “000” with the left digit flashing. Step 4: Press until the left digit changes to an “9”. Step 5: Press . Display will read “900” with the center digit flashing. Step 6: Press until the center digit changes to an ?[...]

  • Page 33

    FOC 3-digit code which identifies the .hex file loaded at the factory . ADR Device address for NAFEM networks. BAU Communications rate when connected into a NAFEM network. NAF Allow the control to communicate with a NAFEM network. SPH High value of desired cabinet temperature range. SPL Low value of desired cabinet temperature range. SHL Lowest tem[...]

  • Page 34

    -33- APD The amount of time, in seconds, that a visual alarm text will be displayed. AT D Alarm temperature delay . AAS Allows the customer to set the type of audible alarm style, either Blast, OFF or Continuous. CL Allows the customer to set the time of day . DA Y Allows the customer to set the date. DS Sets daylight savings time On or OFF . DL1 S[...]

  • Page 35

    VIII. CONTROL P ARAMETERS VIII. b - P ARAMETER ACCCESS & UNITS OF MEASUREMENT : Control Unit of Parameter Description Access Measure ADR* Device Address ENG BAU* Comm. Baud Rate in K ENG KBaud NAF* NAFEM Communications Enable ENG On/Off SPH T emperature Set-Point High CUS Degree SPL T emperature Set-Point Low CUS Degree SHL Set-Point High/Low E[...]

  • Page 36

    -35- VIII. c - G-SERIES P ARAMETER SETTINGS (MIT II Control V ersion): Control Freezer Models Refrigerator Models Parameter GF1 GF2 GF3 GF4 GR1 GR2 GR3 ADR* 2 2 2 2 2 2 2 BAU* 9.6 9.6 9.6 9.6 9.6 9.6 9.6 NAF* ON ON ON ON ON ON ON SPH -5.2 0.1 0.1 32 38.1 39.2 39.2 SPL -10 -4 -4 26.1 34 37 37 SHL -8 -3.1 -3.1 30.2 36 39.2 39.2 SHH -5.2 0.1 0.1 34 40[...]

  • Page 37

    -36- VIII. CONTROL P ARAMETERS VIII. d - R-SERIES P ARAMETER SETTINGS (MIT II Control V ersion): Control Refrigerator Models Parameter RA1 RA2 RA3 RA4 RA5 RA6 RA7 RA8 ADR 2 2222222 BAU 9.6 9.6 9.6 9.6 9.6 9.6 9.6 9.6 NAF ON ON ON ON ON ON ON ON SPH 39.2 39.2 39.2 39.2 38.1 38.1 39.2 39.2 SPL 37 37 37 37 34 34 37 37 SHL 39.2 39.2 39.2 39.2 36 36 39.[...]

  • Page 38

    -37- VIII. CONTROL P ARAMETERS VIII. e - R-SERIES P ARAMETER SETTINGS (MIT II Control V ersion): Control Freezer Models Parameter RF1 RF2 RF3 RF4 RF5 ADR 2 2222 BAU 9.6 9.6 9.6 9.6 9.6 NAF ON ON ON ON ON SPH -15.4 -10 0.1 0.1 -5.2 SPL -20.2 -15.4 -4 -4 -10 SHL -15.4 -13.6 -2.2 -2.2 -8 SHH -10 -10 0.1 0.1 -5.2 SLL -20.2 -20.2 -6.2 -6.2 -13 SLH -17 -[...]

  • Page 39

    -38- VIII. CONTROL P ARAMETERS VIII. f - UNDERCOUNTER P ARAMETER SETTINGS (MIT II Control V ersion): Control Parameter UF1 UF2 UP1 UP2 ADR 2 2 2 2 BAU 9.6 9.6 9.6 9.6 NAF ON ON ON ON SPH 0.1 38.1 38.1 38.1 SPL -4 33.8 33.8 33.8 SHL -0.31 36 36 36 SHH 0.1 40 40 40 SLL -6.2 32 32 32 SLH -4 34 34 34 RO 0 0 0 0 HI 5 41 41 41 LO -10 30.2 30.2 30.2 SCL F[...]

  • Page 40

    T raulsen 4401 Blue Mound Road Fort Worth, TX 76106 Phone: (800) 825-8220 Fax-Svce: (817) 740-6757 Website: www.traulsen.com HOURS OF OPERA TION: Monday thru Friday 7:30 am - 4:30 pm CST Quality Refrigeration[...]