Vulcan PreciPan Electric Braising Pans - Manufacturers Instructions Part D: Maintenance Manual

1. Electrical Diagrams

This section details the electrical classifications and wiring schematics for the PreciPan Electric Braising Pans. It includes tables listing common parts, their references, designations, characteristics, quantities, and codes, as well as contactors.

1.1 Electrical Classifications: Lists components like FastPAD 2 screen card, power assembly, relays, encoders, probes, fuses, thermostats, fans, switches, inverters, transformers, solenoids, and filters with their respective codes.

1.2 Wiring Schematics: Provides diagrams for entry schematics, outlet schematics, and power wiring (208-240V and 480V), illustrating connections for various components like power supply, probes, solenoids, heating elements, and control transformers.

2. Program Settings

This section guides users through setting up the appliance's software and parameters, typically performed after board replacement or software version changes.

2.1 Setting the Software Language: Instructions involve navigating the 'SERVICE' menu, entering the password 'CHEF', and selecting the desired language (default is French). Visual aids show the interface screens for language selection.

2.2 Braising Pan Parameters: Details accessing the 'Technician parameters' screen via the 'SERVICE' menu using the password 'SAVB'. Users can reconfigure appliance settings by selecting and adjusting values using the encoder knob. Visual aids show interface screens for parameter adjustment.

2.3 Screen Card Settings: Explains how to configure a screen card for a specific appliance using a USB stick. It outlines the requirements for the USB stick (FAT32 format, minimum free space) and the step-by-step procedure, including language selection and appliance type detection. Visuals show the screen card installation and configuration process.

3. Maintenance Programs

This section covers diagnostics and software management for the appliance.

3.1 Electronic Cards: Describes the significance of LEDs on the FastPAD 2 power assembly and screen card for communication and diagnostics. It provides a table correlating LED states with potential faults (e.g., supply failure, communication problems, defective cards) and recommended actions (e.g., check power, replace card).

3.2 Position of the Micro Switches on a FastPAD 2 Power Assembly: Explains that micro-switch positions ensure automatic recognition of the unit type for correct software installation.

3.3 Software Control: Details how to check the current software version and identifies software tags for different cards (IHM, UC, Screen Support, Power). It also provides the format for standard update file labels.

3.4 Updating the Software: Emphasizes the importance of regular software updates for product improvements. It outlines precautions during updates (do not switch off power, do not remove USB stick) and provides detailed procedures for using a USB stick to download and install software updates, including file naming conventions and the process for initiating the update.

4. Maintenance Screens

This section describes diagnostic screens accessible via the 'SERVICE' menu for controlling and monitoring appliance inputs and outputs.

4.1 Access to the Maintenance Screens: Users access these screens via the 'SERVICE' menu, 'Technician parameters' tab, and by entering the password 'SAVB'. Navigating through different screens is done by pressing 'Next'.

4.1.1 Screen: Activation of the Power Outputs: Allows control and visualization of power outputs, including activation of safety contactors, heating elements, and visualization of temperature probes.

4.1.2 Screen: Hydraulic Circuit: Enables visualization of flow when solenoids are activated and manual activation of solenoids (Yv, Yd, Yec, Yef) with specified activation times.

4.1.3 Screen: Tilt and Lift: Provides information on lid opening sensor status, basket lift status (presence detector, ram control), and tank tilt status (ram detector, ram control). It notes that tank tilting jack activation is via the facia button, not the screen arrows for this model.

5. Hydraulic Diagrams

This section presents hydraulic diagrams for the appliance.

5.1 Standard Version: Shows a diagram illustrating the hydraulic circuit for the standard version, including water flow, solenoids, and flow restrictors for 26 GAL and 40 GAL models.

6. Operating Faults

This section lists common operating faults, their probable causes, and recommended actions.

It categorizes faults based on screen messages (green for information, red for cooking stopped) and error codes (iXX for client errors, EXX for after-sales errors). Faults covered include core probe issues, overheating, tank base probe faults, water detection, leak detection, USB stick errors, connectivity errors, and tank tilt ram blockages. Each fault entry provides a description, potential causes, and step-by-step troubleshooting guidance.

7. Preventive Maintenance

This section outlines the importance of regular servicing by qualified personnel and details the maintenance schedule.

7.1 List of Actions: Provides a yearly checklist of recommended actions, including electrical safety checks, inspection of doors, lids, tanks, facia labels, technical compartments, ventilation, hydraulic circuits, solenoids, power connections, and electronic cards. It specifies checks for wear, corrosion, leaks, and proper function.

7.2 Adjusting Frequency Intervention Maintenance, Usage Rate Per Day: Explains how the service counter calculates maintenance intervals based on usage. Technicians must verify and adjust these settings (maintenance regularity and hours per day) based on actual appliance use during installation and subsequent maintenance.

7.3 Re-initialisation of the Maintenance Counter: Details the procedure to reset the maintenance counter via the service screen and installation parameters using the 'INSB' PIN code.

7.4 Connecting the Terminals to the Heating Elements: Describes the correct procedure for fitting terminals to heating elements, including the use of brass washers, a serrated washer, and a brass nut, and specifies the required torque for tightening.

8. Procedures for Changing Components

This section provides detailed instructions for accessing and replacing various components of the braising pan.

8.1 Location of the Technical Components: Identifies the location of key components such as the retractable spray hose, lid axis components, tank base probe, PT100 probe, electrical connections, flow regulator, solenoids, screen card, encoder, tank ram, power assembly, and contactors.

8.2 Access to Components: Describes how to access components by removing the control fascia, lower panelling, and tank cladding, with step-by-step instructions and visual aids.

8.3 Encoder: Details the removal and replacement of the encoder button and the encoder itself, referencing the control fascia access procedure.

8.4 PreciPan Fastpad 2 Interface (Screen Card): Provides instructions for removing and replacing the screen card assembly, including disconnecting connections, removing fixing nuts, and cleaning the interface. It also covers the buzzer assembly replacement.

8.5 Screen Support: Explains how to remove and replace the screen support assembly, including disconnecting cables and removing the seal.

8.6 PreciPan Fastpad 2 Power Card: Details accessing and removing the power card box, including disconnecting various connections and undoing TORX screws. It also covers the FastPAD 2 Maxi UL Relay Bar.

8.7 Flow Regulator: Outlines the procedure for removing and changing the flow regulator, including disconnecting electrical supply and hydraulic flexibles. It also describes the control procedure for setting and calibrating the flow regulator.

8.8 Lid Switch: Provides steps for accessing and replacing the lid switch, including removing the lid axis cover and adjusting the switch position for proper lid detection.

8.9 Tank Ram: Details the procedure for removing and replacing the tank ram and its micro-switch, including disconnecting electrical supplies and undoing screws and nuts. It also covers fitting the switch and support onto the new ram.

8.10 Basket Lift Ram: Describes the process for removing and replacing the basket lift ram, including opening the lid, removing covers, disconnecting electrical supplies, and removing the ram support and ram itself.

9. Checking the Temperature Sensors

This section focuses on checking the PT100 temperature sensor.

9.1 PT100 Probe: Explains the function of the PT100 sensor, its resistance-temperature relationship, and provides a detailed chart showing resistance values for various temperatures. It also outlines how to check sensor resistance, insulation, and continuity using an ohmmeter.

10. Adjustment Tank / Lid

This section covers adjustments related to the tank and lid of the braising pan.

10.1 Levelling the Tank / Chassis: Guides the user through checking and adjusting the chassis level, and then proceeding to adjust the tank's alignment within the chassis. It details loosening bolts, lock nuts, and screws, and using a spirit level to ensure correct rear and front alignment. It also covers clamping the tank in place after alignment.

10.2 Adjusting the Lids Counterbalance: Explains how to adjust the lid's counterbalance to regulate the effort required to open or close it. This involves ensuring bearing tightness and adjusting spring tension via a threaded rod, with criteria for correct adjustment provided (lid remaining open at 15 3/4" above the tank).

11. Recommended (Wear) and Front Line Spare Parts

This section lists recommended spare parts for the appliance, along with their corresponding codes. It includes items such as screen assemblies, rams, solenoids, contactors, fuses, probes, heating elements, fans, and seals.