Vestfrost VTS254 Service Manual
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Vestfrost VTS254 Service Manual

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Service Manual - Low Temperatur
VTS254 VTS256 VTS 258

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Summary of Contents for Vestfrost VTS254

  • Page 1 Service Manual - Low Temperatur VTS254 VTS256 VTS 258...

  • Page 2: Table Of Contents

    Contents Battery backup system ......2 Operation and function - Display .... 3 Installing a remote alam ....... 13 Replacement of door ......15 Replacement of door gasket....16 Replacement of door handle....19 Replacement of wheels......20 Replacement of closing bush ....

  • Page 3: Battery Backup System

    Battery backup system How to switch on the battery backup system: 1. Open the door 2. Use a pen to switch on the battery backup system in the hole 3. When turned on the switch it will have a yellow light NOTE! The battery backup system does not supply the cooling system with power to run.

  • Page 4: Operation And Function - Display

    Operation and function - Display Start up: When the appliance is connected to the power supply, the keyboard will automatically start up. The start up view on the keyboard will show the different software installed on the controller of the appliance. Press enter to return from the start up view.
  • Page 5 Keys – main view: SET: Enter the Set Point menu of the temperature SERVICE: Enter the Service menu DATA: Enter the Data Logging menu ALARM: Enter the Alarm menu How to see and modify the temperature Set Point: 1. Push and immediately release the SET key: the display will show the Set Point value. 2.
  • Page 6 Service menu: From the main view push the SERVICE key and the SERVICE menu is entered. See below picture: PROBES: Enter the probes, to see the measured temperatures. 1-4 probes is availa ble depending on model. PARAMETERS: Enter the setting of the parameters. Please note that changes made to the parameters should only be made of a technician.
  • Page 7 How to use the Self Test: 1. Enter the SERVICE menu 2. Select SELF TEST sub-menu 3. Push the ENTER key, 4. If PASSWORD is required, insert the password, 5. OTHERWISE the SELF TEST menu is entered directly. 6. Push the START key 7.
  • Page 8 How to set time and date: 1. Enter the SERVICE menu 2. Select CLOCK sub-menu 3. Push the ENTER key. 4. Set the day by means of the UP and DOWN keys. 5. Push the SET key, to confirm and pass to the setting of time. 6.
  • Page 9 Data menu: From the main view push the DATA key and the DATA menu is entered. See below picture: LOG: Enter the data logged by the controller. EXPORT: Export the data to an USB pen drive delivered with the appliance. GRAPH: Enter the graph showing the temperature logged the last 24h (with a logging inter- val of 15min.)
  • Page 10 How to export data: Enter the EXPORT menu Insert the USB pen drive supplied by Vestfrost. Select ALARM or DATA, the controller starts sending data to the pen drive, when the export is finished the message: EXPORT - Copy completed is displayed.
  • Page 11 How to enter the Graph: 1. Enter the DATA menu 2. Select GRAPH sub-menu 3. Push the ENTER key and the GRAPH menu is entered. 4. By UP and DOWN keys chose the probe that has to be displayed. 5. Push the HOME key to get back to the main view. NOTE: A graph is erased when the controller is switched off.
  • Page 12 3. Push the LOG button to enter the ACTIVE ALARM LOG. This menu contains all the information concerning the active alarms. In the first line, it is displayed how many alarms are happening. 4. It’s possible to move through the alarms by the UP and DOWN keys. 5.
  • Page 13 Alarms: “P1” Regulating probe TR3 failure Alarm output ON; Compressor output according to parameters Con and CoF “P2” EVP Probe Failure Alarm output ON; Other outputs unchanged “P3” Logging probe TL1 failure Alarm output ON; Other outputs unchanged “P4” Logging probe TL2 failure Alarm output ON;...

  • Page 14: Installing A Remote Alam

    Installing a remote alarm 1. The unit has to be turned off. 2. Open the door. 3. Unscrew the locking pawl. 4. Install the wires for the remote alarm. Using pin 16 and 17. 5. Install the remote alarm. NOTE: ●...
  • Page 15 Changing parameters for remote alarm: 10. Press the menu “SERVICE”. 11. Select “PARAMETERS” by pressing forward with the arrow keys and confirm with "ENTER". 12. Press “Pr2” 13. Press “SET” 14. Set the code to 12 with the arrow keys 15.

  • Page 16: Replacement Of Door

    Replacement of door 1. The unit has to be turned off and empty. 2. Place the unit gently on the back. 3. Note the distance between the top of the door and the hinge in the top and the bot- tom of the door and the hinge in the bot- tom.

  • Page 17: Replacement Of Door Gasket

    Replacement of door gasket 1. Turn of the freezer 2. Remove frostbuildding and ice 3. Remove the internal gasket 4. Wipe the inside of the door and the unit, to remove all water and moist 5. Clean the gasket mounting area with alcohol 6.
  • Page 18 8. Let the gasket follow the notch to the corner. 9. Press the gasket into the notch before and after the corner. Do not pull or stretch the gasket 10. Press the gasket into the notch in the entire corner 11.
  • Page 19 18. Press the gasket into the rest of the notch in the bottom 19. Cut the gasket clean off for a per- fect joint...

  • Page 20: Replacement Of Door Handle

    Replacement of door handle 1. The unit has to be turned off and empty. 2. Place the unit gently on the back 3. Unscrew all screws connected to the door. Both in the top and the bottom of the door. 4.

  • Page 21: Replacement Of Wheels

    Replacement of wheels 1. The unit has to be turned off and empty. 2. Place the unit gently on the back. 3. Open the door, and secure that the door will be supported in the open position. 4. Remove the screw in the lower panel in the left side.

  • Page 22: Replacement Of Closing Bush

    Replacement of closing bush (for closing) 1. The unit has to be turned off and empty. 2. Place the unit gently on the back. 3. Open the door, and secure that the door will be supported in the open position. 4.

  • Page 23: Replacement Of Led Light

    Replacement of LED light 1. The unit has to be turned off. Open the door. 3. Unscrew the locking pawl. 4. Unscrew the to screws securing the top panel 5. Open the panel. 6. Unscrew the 4 screws fixing the plate with the electrical parts.
  • Page 24 7. Dismount the plug for the LED light. 8. Take the plate with electrical parts out of the cabinet. 9. Drill out the rivets that fixates the LED light. 10. Mount the new LED light with three 4,2mm thread making screws. 11.

  • Page 25: Replacement Of Fan

    Replacement of fan 1. Dismount the 3 screws that fixates the cover. 2. Dismount the compressor. 3. The compressor is gently moved out of the compartment. To spare the tubing please place it in the same height as it was using a wooden brick or similar. 4.
  • Page 26 5. Dismount the cover of the electrical box. 6. Pull out the plug for the fan. 7. Dismount the fan. 8. Mount the new fan in reverse order.

  • Page 27: Replacement Of Display

    Replacement of Display 1. The unit has to be turned off. Open the door. 3. Unscrew the locking pawl. 4. Unscrew the to screws securing the top panel 5. Open the panel. 6. Dismount the plug on the print board of the display.
  • Page 28 10. Then put on the new print board. 11. The second plastic part is placed on the print board. 12. Put in the screws in each corner. 13. Make sure that all 6 buttons are placed correctly on the front of the toppanel by pushing each button (click).

  • Page 29: Replacement Of Door Hinge

    Replacement of door hinge 1. Dismount the door according to ”Replace- ment of door” page 13 2. Note the distance between the hinge and the front of the cabinet. You will need these dimensions when mounting the new hinge. 3. Dismount the hinge. 4.

  • Page 30: Recharching Refrigerant Vts 254

    If you have the possibility to measure the weight of the bottle before you start recharching, it is useful to determine when the charge is sufficiently. The system of the VTS254 shall be evacuated thoroughly. Connect the bottle to the system.

  • Page 31: Recharching Refrigerant Vts 256

    VTS 256 Recharching refrigerant from a service bottle A  B  The recharging shall take place in a room where the ambient temperature is between 20 and 25 C. The service bottle shall have ambient temperature, i.e. between 20 and 25°C. The service bottle is turned upside down as shown in the picture.

  • Page 32: Recharching Refrigerant Vts 258

    VTS 258 Recharching refrigerant from a service bottle A  B  The recharging shall take place in a room where the ambient temperature is between 20 and 25 C. The service bottle shall have ambient temperature, i.e. between 20 and 25°C. The service bottle is turned upside down as shown in the picture.

  • Page 33: List Of Parameters Vts254

    List of parameters VTS254:...

  • Page 35: List Of Parameters Vts256

    List of parameters VTS256:...

  • Page 37: List Of Parameters Vts258

    List of parameters VTS258:...

  • Page 39: Plate With Electrical Parts

    Plate with electrical parts: A: Battery B: Controller C: Transformer D: Wire to the display E: Wire for battery and switch. F: Magnetic door contact. G: Wire for plug/main supply...

  • Page 40: Electrial Diagram

    Electrical diagram: 8195007 rev 05...

This manual is also suitable for:

Vts 258Vts256

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