Pratica Copa Express Service Manual
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Pratica Copa Express Service Manual

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Service Manual
For the Copa Express Oven
Pratica Products, Inc - USA
675 Town Square Boulevard, Suite 200
© 2018 Pratica Products, Inc - USA
Garland, TX 75040
December 2018

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  • Page 1 Service Manual For the Copa Express Oven Pratica Products, Inc - USA 675 Town Square Boulevard, Suite 200 © 2018 Pratica Products, Inc - USA Garland, TX 75040 December 2018...

  • Page 2: Table Of Contents

    INDEX SAFETY INSTRUCTIONS ................... 1 ........................ 2 MPORTANT AFETY NSTRUCTIONS ......................... 3 ROUNDING NSTRUCTIONS ........................3 OWER EPLACEMENT ..........................3 EDUCTION RECAUTIONS BSERVED EFORE URING ERVICING VOID OSSIBLE XPOSURE XCESSIVE ..........................4 ICROWAVE NERGY SPECIFICATIONS & INSTALLATION ................5 ............................... 6 HEET ............................
  • Page 3 USER SETTINGS ..................... 35 ........................36 CCESSING ETTINGS ............................37 ROUP ............................38 ECIPES ............................39 REHEATING USB ..............................39 ..........................40 HANGE ANGUAGE ........................... 40 URRENT EMPERATURE .......................... 40 DJUSTMENT ..........................41 ELSIUS AHRENHEIT ..........................42 HANGE ASSWORD ............................42 CCESS ........................
  • Page 4 INDEX ............................56 ORKS ......................56 ICROWAVE ROTECTION YSTEM ........................57 OOR AND WITCHES ............................58 WITCHES ........................59 WITCH DJUSTMENTS ............................61 OMPONENTS ....................... 72 ICROWAVE EALS AND ASKETS ......................74 ESTING FOR ICROWAVE EAKAGE IMPINGEMENT SYSTEM ..................75 .............................
  • Page 5 FILTERING SYSTEM ....................97 .............................. 98 ILTER ..........................99 ATALYTIC ONVERTER ............................99 ATALYST COPA EXPRESS SCHEMATICS ................101 HMI B ......................... 102 OARD CHEMATIC ........................103 ONTROL OARD CHEMATIC ..........................104 EATER CHEMATIC ....................105 LOWER OTOR COOLING CHEMATIC ......................
  • Page 6 INDEX...

  • Page 7: Safety Instructions

    SAFETY INSTRUCTIONS...

  • Page 8: Important Safety Instructions

    SAFETY INSTRUCTIONS Important Safety Instructions WARNING: When operating this oven, strictly adhere to the following safety precautions to reduce the risk of burns, electric shock, fire, injury, damage to oven or property near oven, or possible exposure to excessive microwave energy. General Safety Instructions •...

  • Page 9: Grounding Instructions

    WARNING: To reduce the risk of electrical shock, the unit must be properly grounded. Power Cord Replacement If the power cord is damaged in any way, is must be replaced by the manufacturer (Pratica Inc.), an authorized service agent, or qualified personnel.

  • Page 10: Precautions To Be Observed Before And During Servicing To Avoid Possible Exposure To Excessive Microwave Energy

    SAFETY INSTRUCTIONS Precautions To Be Observed Before And During Servicing To Avoid Possible Exposure To Excessive Microwave Energy (a) Do not operate or allow the oven operated with the door open. (b) Make the following safety checks on all ovens to be serviced before activating the magnetron or other microwave source and make repairs as necessary: (1) Interlock operation, (2) proper door closing, (3) seal and sealing surfaces (arcing, wear, and other damage), (4) damage to or loosening of hinges and latches, (5) evidence of dropping or abuse.

  • Page 11: Specifications & Installation

    SPECIFICATIONS & INSTALLATION...

  • Page 12: Spec Sheet

    SPECIFICATIONS & INSTALLATIONS Spec Sheet...

  • Page 13: Certifications

    Certifications Electric Specifications Copa Express Voltage Frequency Power Circuit breaker Consumption 208V 60Hz 6.2kW 4.3kW/h 240V 50Hz 6.9kW 4.8kW/h Oven Dimensions Height: 27.3” (694mm) Width: 15.9” (405mm) Depth (footprint): 21.4” (544mm) Depth: 30.7” (780mm) Volume: 0.61 cu/ft (17.5 Liters) Installation Instructions Please read the following instructions carefully.

  • Page 14: Installation Warnings: Please Read Before Lifting Oven To Prevent Injury

    WARNING: This unit weights approximately 174 lbs. (79kg). Never attempt to lift this unit with fewer than 2 people. WARNING: The oven must be properly installed on a level surface at all times. Pratica Inc. will not recognize damage from a fallen oven as a warranty and may void warranty all together.

  • Page 15: General Instructions

    • To facilitate the oven maintenance, Pratica Inc. recommends a space os at least 30in between the right side of the equipment and the wall. • Do not allow the vents on the back or bottom of the unit to be blocked or restricted.
  • Page 16 DAILY CLEANING & QUARTERLY MAINTENANCE...

  • Page 17: Daily Cleaning & Quarterly Maintenance

    DAILY CLEANING & QUARTERLY MAINTENANCE...

  • Page 18: Daily Cleaning

    DAILY CLEANING & QUARTERLY MAINTENANCE Daily Cleaning Please follow the steps below when cleaning the oven. Make sure to use non-caustic cleaners as they will not cause damage the oven or components. If damage occurs to unit or components due to incorrect cleaner, that will be considered a non-warranty service call.
  • Page 19 Step 4: Cleaning Catalyst WARNING: The Catalytic Converter must remain inside the oven during operation. Only clean when the unit is not in use. • Remove the oven rack and bottom jetplate. (Refer to step 1 & 2 for instructions on how to remove the rack and jetplate). •...
  • Page 20 DAILY CLEANING & QUARTERLY MAINTENANCE Step 7: Cleaning the Oven Cavity • Apply oven cleaner to a dry cloth or scrub pad and wipe down the sides of the cavity. • If large buildup occurs, you may spray the cleaner directly in the affected area and allow to sit for a small period of time to allow cleaner to break u buildup.

  • Page 21: Quarterly Maintenance

    Step 12: Cleaning Oven Exterior • If any stains have formed on exterior, wipe away with damp cloth or towel. • You may also spray cleaner on a dry cloth and wipe affected area to remove stain. • Make sure not to spray cleaner directly on exterior of oven. •...
  • Page 22 DAILY CLEANING & QUARTERLY MAINTENANCE Step 4: Removing Rear Vent Catalyst • With the use of a Phillips Screwdriver, remove al 8 screws holding the rear catalyst housing. • Support the housing with your hand prior to removing all screws. •...
  • Page 23 Step 8: Accessing Cooling Fans • If there is excessive build u on cooling fans, remove all Phillips screws around the outer edge of the rear panel. • Remove the rear panel completely to gain access to both cooling fans. •...
  • Page 24 THEORY OF OPERATION...

  • Page 25: Theory Of Operation

    THEORY OF OPERATION...

  • Page 26: Copa Express Technology

    THEORY OF OPERATION Copa Express Technology The Copa Express oven uses a combination of high speed air convection and microwave energy to heat and cook food faster than traditional cooking methods. With the use of a single blower fan, air enters the cavity from the top and distributes evenly over the product and forces down through the hokes of the bottom jetplate for even cooking.

  • Page 27: Characteristics Of Microwaves

    Characteristics of Microwaves What are microwaves? Before understanding the microwaves, we need to know what waves are. Physics describes a wave as a disturbance that spreads in a medium (space or mass). When a stone is tossed into a lake or body of water, we can observe the waves that spread from the point where the stone hits the water.
  • Page 28 THEORY OF OPERATION The electromagnetic wave is classified in a scientific scale called Electromagnetic Spectrum. Observing the spectrum below, the communication waves have a relatively long length and a low frequency. As we move down the spectrum, the length of the waves become smaller and the frequency becomes higher (ex.
  • Page 29 Microwaves are a type of radiant energy. As well as radio waves, visible light and infrared, the microwaves are part of the electromagnetic spectrum, i.e., it is a form of electromagnetic radiation. They are classified as non-ionizing radiation, because unlike x-rays and Alpha, Beta and Gamma rays, its effects are strictly thermal and therefore do not after the molecular structure of the item that is being irradiated.
  • Page 30 THEORY OF OPERATION How do the microwaves heat the food? The food is formed by bipolar molecules, that is, they possess a positive and a negative pole. For example, water in its composition has hydrogen and oxygen which are positive and negative. Water molecule In normal circumstances, the bipolar molecules of a food are disorderly placed.
  • Page 31 Why is the heating in the microwave oven faster than in the conventional stoves and ovens? When food is cooked over a stove, we must first heat the surface, the container, and finally, the food. When cooking inside of s traditional oven, it must first heat the air in the internal cavity, then the ovens walls, shelves and finally, the food.
  • Page 32 OVEN CONTROLS AND COOKING...

  • Page 33: Oven Controls And Cooking

    OVEN CONTROLS AND COOKING...

  • Page 34: Preheating

    OVEN CONTROLS AND COOKING Preheating To start the oven preheating process, after turning on the equipment, choose between Preheating Group 1 or Preheating Group 2. The following screen will present the CURRENT and PROGRAMMED temperature and the bar indicating the remaining time to utilize the equipment. NOTE: The time is only initiated when the CURRENT temperature is next to the PROGRAMMED;...
  • Page 35 The recipe will enter in execution immediately. The screen will present the group name, recipe name, situation of the operation (In progress or paused), and the remaining time for conclusion of the recipe. It is possible to verify the temperature of the CHAMBER heater and of the bottom heather pressing the icon.

  • Page 36: Accessing The Options

    OVEN CONTROLS AND COOKING After the completion of a recipe, the following options will be released: Heat/Brown More: Activates the microwave and hot air during a predetermined time. Brown More: Activates only the hot air during a predetermined time. Heat More: Activates only the microwave during a predetermined time. Repeat Recipe: Repeats the same recipe chosen by the user.

  • Page 37: Test Mode

    Test Mode In Test Mode, it is possible to define the parameters of the step, execute it, and if the result of your test is approved, at the end of the operation, transform it in Recipe. To access the Test Mode, click on the Options icon .

  • Page 38: Creating Recipes

    OVEN CONTROLS AND COOKING Creating Recipes When creating a recipe, all the variables mentioned earlier should be considered. The microwaves and the air speed are the critical factors for a successful preparation. To get faster results in the recipe creation, we suggest to begin programming as 1/10 of the total time of preparation used in a conventional process.

  • Page 39: Daily Cleaning Guide

    Daily Cleaning Guide To help in the sanitation of the Rocket Express, use the Daily Cleaning Guide. Access it through the Options screen, click on the Option icon , and then press the icon , follow the steps informed on the screen carefully. : Open the oven door and wait for the temperature to drop until 65°C.
  • Page 40 OVEN CONTROLS AND COOKING : Use a non-abrasive scrub pad to loosen any stubborn stains if necessary. Proceed clicking on the arrow: : Wipe/Rinse the cavity with a wet towel removing cleaner and debris. Proceed clicking on the arrow: : Dry the oven cavity with a towel. Proceed clicking on the arrow: : Use a non-abrasive scrub pad to loosen any stubborn stains on the cook rack and jet plate if...

  • Page 41: User Settings

    USER SETTINGS...

  • Page 42: Accessing User Settings

    USER SETTINGS Accessing User Settings Inside the Options Screen, click on the icon . Will be presented the screen User Password. The standard password for the settings is 456789. The password may be changed. The User Settings screen is composed by thirteen items. Use the arrows to access the next options screen.

  • Page 43: Edit Group

    Edit Group To edit the groups, touch on the icon, the groups screen will be presented. However, in the first position will be the icon which it is possible to Create New Group. Choose between creating a new group or select the group you wish to edit. It is possible to have up to a total of sixteen groups.

  • Page 44: Edit Recipes

    USER SETTINGS Edit Recipes To edit the recipes, touch on the icon . The groups screen will be displayed. Choose in which group you wish to change the recipes. When accessing the recipes, it will be possible to edit an already existent one or create a new recipe. The available options after choosing between editing or creating a recipe will be: Edit Name: changes the name of the recipe, you may use letters, numbers or special characters.

  • Page 45: Preheating

    Preheating The editable parameters in Preheating are: Temperature Group 1 Temperature Group 2 Preheating Time: Define the time of the stopwatch of the Preheating screen. The purpose is to equalize the temperature inside the chamber when the lower and upper resistances reach the temperature.

  • Page 46: Change Language

    USER SETTINGS Change Language To change the language, just click on the icon and choose the desired language: English, Spanish, French or Portuguese. Current Temperature The Current Temperature screen : is only informative. In it, its possible to verify the temperature of both heaters: the chamber and bottom heater.

  • Page 47: Celsius / Fahrenheit

    Click on to edit, respectively, the date and time. Press to change the date / time format. The opposite screen will be displayed. Choose the date and time format and click on to confirm and return to the options. Celsius / Fahrenheit Change the temperature format displayed in the oven between Celsius and Fahrenheit, click on the icon among the User’s Settings and define the temperature format you wish.

  • Page 48: Change Password

    USER SETTINGS Change Password To change the user’s password, just type the new password and then confirm it. Edit Access Edit Accesses corresponds to the function in which you may block functions which the operators have access. For example: If you wish that the Favorites and Test Mode functions are never accessed by the operators, just click on both of them, which will turn dark gray, indicating that they are locked until the moment you wish to unlock them.

  • Page 49: Manufacture Information

    Manufacture Information Information on Firmware version, Serial and Manufacturing Date the Copa Express are contained. Tech Support In the Tech Support, you will find all the necessary data to contact to clear out doubts, request repairs or technical visits. Restore Factory Settings ATTENTION: The Restore Factory Settings option will delete all the Groups, Recipes and their Steps, decides the Settings defined by the user.
  • Page 50 MANUFACTURE SETTINGS...

  • Page 51: Manufacture Settings

    MANUFACTURE SETTINGS...

  • Page 52: Accessing Manufacture Settings

    MANUFACTURE SETTINGS Accessing Manufacture Settings Inside the Options Screen, click on the icon . Will be presented the screen User Password. The standard password for the settings is 459381. The password may be changed. The User Settings screen is composed by nine items. Use the arrows to access the next options screen.

  • Page 53: Electrical Load Test

    Electrical Load Test Through the electrical Load Test is possible to check some component’s operation like: buzzer, microwaves, general contact, chamber heating, bottom heating and inverter. Read Inputs Show the status of the microswitches. Change Password Let the costumer’s and manufacturer’s passwords be changed.

  • Page 54: Current Sensor

    Indicate that the power board is able to read the electric current in the microwave system. Counters Show the data counting, like: faults, recipes, filter cleaning. Oven Data Let the insert and data consults of the manufacturer, like: serial number, manufacture date and oven generation (G4: Rocket Express / G5: Copa Express).

  • Page 55: Engine Control

    Engine Control Select each model of inverter will control the motor: Weg or Honeywell. Preheating Speed Adjust the air speed that will be used during the preheating. Voltage Select the voltage supply of the high-tension circuit: 208V / 220V / 240V.
  • Page 56 ALERTS & ERRORS...

  • Page 57: Alerts & Errors

    ALERTS & ERRORS...

  • Page 58: Alerts And Errors: Possible Solutions

    ALERTS & ERRORS Alerts and Errors: Possible Solutions The Copa Express was Programmed to signal any possible error and alerts that may occur during the operation. On the Option icon , a yellow signal will appear for alerts ( ) and red for errors (...

  • Page 59: Errors

    Errors In case of several unsuccessful reset attempts, the alert will become an error, and it will be necessary to contact Technical Assistance. Alerts & Errors Table Component Becomes alert when: Becomes error when: more than ten Inverter reset attempts CLMG thirty seconds without Low Magnetron Current...
  • Page 60 MICROWAVE SYSTEM...

  • Page 61: Microwave System

    MICROWAVE SYSTEM...

  • Page 62: The Microwave System

    MICROWAVE SYSTEM The Microwave System The Microwave is the most complex system in the oven. Extreme caution must be taken during servicing to protect both the operator and technician. The Microwave portion of the unit consist of several components that make up a left and right system. For safety precautions, both left and right microwave systems utilize a 20A fuse that will blow if an over-current situation occurs shutting off the microwave system immediately preventing further component damage.

  • Page 63: Door And Door Switches

    Door and Door Switches Door The Copa Express oven door utilizes a choke design. Adjustments Screws This design protrudes into the oven cavity slightly to improve the microwave sealing capabilities and functionality. The ovens leave the factory only after conforming to all the stringent testing required by multiple governing agencies.

  • Page 64: Door Switches

    MICROWAVE SYSTEM Door Switches The Copa Express oven utilizes three independent door switches to monitor the position of the door during microwave operation. The switches are referenced throughout this section as well as the wiring diagram as: Primary, Secondary, and Monitor.

  • Page 65: Door Switch Adjustments

    Door Switch Adjustments LED lights are used on the control board to indicate the position of the contacts of the three door switches. When the LED is illuminated, the switch position is opened and vice versa. The control board identifies the LED’s as SW1 (Primary) and SW2 (Secondary). The LED’s will illuminate when the over power is connected, (and the door is opened).
  • Page 66 MICROWAVE SYSTEM The Primary and Secondary switches are engaged with a single actuator attached to the right-side hinge. Because of this design, the door position has a direct and precise relationship with the switch contacts. The actuator is a part with a step machined into one side to allow for the Primary switch to open before the Secondary switch (mounted beside it).

  • Page 67: Components

    Refer to page 74 for proper microwave leak testing procedures. An RF leakage test should be performed after the following service tasks: • Door removal, replacement and/or adjustment • Waveguide removal and/or replacement • Magnetron removal and/or replacement • Door switch adjustment and/or replacement Components Magnetron Thermostat 1 and 2 The bimetal is mounted on the Magnetron chassis as...
  • Page 68 MICROWAVE SYSTEM 20 Amp Fuse Test 1) Unplug the oven remove the right-side panel. 2) Push down on the fuse holder and remove the 20A fuse. 3) Check continuity on fuse from one end to the other (do not set fuse on metal table). •...
  • Page 69 Micro Door Switches The SW1, SW2, and SW3 switches are activated by the opening and closing of the door. A signal is sent to the control board when the door switch is either open or closed. Primary Switch (Inner) SW1 Secondary Switch (Outer) SW2 Monitor Switch Door Switch Test...
  • Page 70 MICROWAVE SYSTEM How to Take an Amp Draw If any component from the microwave circuit fails or the food is not cooking properly, the first thing that should be done is take an amp draw on the CT wire. The target amp draw on both circuits for a 208V unit is between 14-15 amps, a unit supplied with 240V will be between 13-14 amps.
  • Page 71 High Voltage Transformer The HV transformer of the microwave circuit is formed by three windings. The primary low/line tension winding (208V/240V), the secondary low tension/voltage winding (3.6V) and the secondary high tension/voltage winding (2000V), as shown in the scheme below. The secondary low voltage winding (3.6 volts) acts as a filament transformer and begins to energize the magnetron by heating the cathode.
  • Page 72 MICROWAVE SYSTEM Testing Primary Winding (208V/220V/240V) 1) Remove the rear panel from the unit. 2) Unplug the oven and wait 5 minutes for the high voltage capacitor to discharge or discharge manually by grounding each capacitor terminal. 3) Unplug the wires from the HV transformer terminals. 4) With an ohmmeter, measure the resistance across the terminals of the primary as shown in picture on the right.
  • Page 73 High Voltage Capacitor The capacitor utilized in the microwave circuit stores energy during half of the power cycle. It releases it during the other half of the cycle and aids the transformer to produce the 4.000V of continuous current to the Magnetron. The capacitor has an internal drainage resistor (10MΩ) to assist with discharging when power is cut off.
  • Page 74 The diode transforms the alternating current into continuous and prevents the filament voltage from becoming positive. The diode utilized in the Copa Express oven is of 16KV/750mA.
  • Page 75 Magnetron The Copa Express is equipped with two magnetrons in the microwave circuit. The structure of the Magnetron is basically composed of anode, filament (cathode), and the antenna. The anode is a hollow iron piece with several open cavities which are constituted by an even number of flaps pointing to the filament.
  • Page 76 MICROWAVE SYSTEM Powerful magnets are placed above and underneath the anode to generate a magnetic field along the length of the antenna. The magnetic field causes the electrons to follow a curved path around the cathode and the anode as seen in the picture below. MAGNET MAGNET As the electrons pass by the cavities, the cavities begin to resonate and emit microwave radiation.
  • Page 77 Testing Magnetron WARNING: Never attempt to measure high voltage directly. Death or serious injury could result. Always make sure to discharge the capacitor manually before commencing repair. 1) Remove both side, back and top covers from the unit. 2) Unplug the oven and discharge the capacitor manually by grounding each capacitor terminal. 3) Look for physical damage to the component.

  • Page 78: Microwave Seals And Gaskets

    1.0mW/cm2 and greater than 5.0mW/cm2 for proper documentation by the field technician. The Copa Express oven utilizes a door choke design to efficiently seal the microwaves in the oven cavity. The technician needs to inspect the door surfaces for debris build up and remove any build up that may have accumulated between the door and the oven cavity surfaces.
  • Page 79 The magnetrons are equipped with an additional RF RF Gasket gasket that is placed around the antenna and the existing magnetron gasket. This additional gasket must have both ends of the material meet without any gaps to ensure a proper seal. The purpose of these gaskets is to provide the seal between the magnetron and the waveguide.

  • Page 80: Testing For Microwave Leakage

    MICROWAVE SYSTEM Testing for Microwave Leakage An RF leakage test should be performed after the following service tasks: • Door removal, replacement and/or adjustment • Waveguide removal and/or replacement • Magnetron removal and/or replacement • Door switch adjustment and/or replacement WARNING: This procedure requires work when the oven surfaces are extremely hot.

  • Page 81: Impingement System

    IMPINGEMENT SYSTEM...

  • Page 82: Blower Motor

    The Copa Express impingement system utilizes different components to heat, filter and recirculate air into the cook cavity rapidly. Blower Motor The Copa Express oven utilizes a three-phase motor to spin the turbine clockwise and is controlled by a frequency inverter (Speed Control). Testing Blower Motor WARNING: The blower motor is located on the back of the unit in between the microwave circuits.

  • Page 83: Frequency Inverter (Weg Cfw 100)

    Frequency Inverter (WEG CFW 100) The Copa Express oven regulates the speed of the blower motor the frequency. This inverter utilizes a data communication protocol called MODBUS to communicate with the main control board. The picture below shows the connections of the frequency inverter.

  • Page 84: Frequency Inverter Troubleshooting

    IMPINGEMENT SYSTEM Frequency Inverter Troubleshooting The frequency inverter is in constant communication with the electronic board. If the control board registers a problem (ex. Lost communication), the control board resets the inverter to fix the problem. The electronic board will try to reestablish the communication with the frequency inverter. If the reset fixes the issue, the oven will continue with regular functioning.
  • Page 85 The following table shows the description of each status as well as the indication in HMI display. P006 Status Description READY Indicates the inverter is ready to be enabled. Indicates the inverter is enabled. Indicates the incoming voltage is too low for operation (under voltage) and will not accept the enabling command.
  • Page 86 IMPINGEMENT SYSTEM The following table shows the main failures and alarms that may occur in the inverter. Failure / Alarm Description Probable cause A046 - High load in the Blower motor overload alarm. Defective blower motor. blower motor shaft. Temperature in lGBT’s high (P030 > 230F / 110C).

  • Page 87: High Limit Thermostat

    High Limit Thermostat The high limit thermostat has an automatic reset bulb and does not need to be manually pushed. There are two high limit thermostats installed on the right side of the unit next to the heater breakers to protect the convection heater and Infrared element. The high limit bulbs are installed outside of the bottom chamber surface and on the rear next to the convection heater.

  • Page 88: Convection Heater

    IMPINGEMENT SYSTEM Convection Heater The Copa Express oven utilizes a 3000W, 208/240V (3X1000W) circular convection heater that is installed inside the rear chamber around the blower turbine. Testing Convection Heater 1) Remove the side covers and top oven panels. 2) Look for any physical damage to the heater or wires. If any damage is seen, remember to unplug the unit before continuing.

  • Page 89: Ir Element

    IR Element The bottom infrared heater is a sheathed-style heater rated at 3,000 watts at 208V AC. The bottom heater is controlled by the solid state switch located on the top side of the unit. Testing IR Element 1) Remove the side covers and top oven panels. 2) Look for any physical damage to the heater elements or wires.

  • Page 90: Cc/Ir Temperature Sensors

    IMPINGEMENT SYSTEM CC/IR Temperature Sensors The Copa Express oven utilizes two type J temperature sensors. The sensors are responsible for registering the temperature for the cook cavity and IR element and relaying the information to the main control board. Testing Temperature Sensors If one of the sensors has a problem, the oven continues to work;...
  • Page 91 To test the temperature sensors, follow the steps below. 1) Unplug the oven. 2) Remove both side and top panels from the unit. 3) Visually check for physical damage to the sensor or wires. 4) Remove both wires from the main control board and test for continuity. •...
  • Page 92 CONTROL SYSTEM...

  • Page 93: Control System

    CONTROL SYSTEM...

  • Page 94: Main Control Board/Display

    CONTROL SYSTEM Main Control Board/Display The control board signals each oven component based on commands sent from the HMI electronic board that were selected by the operator. The Power Module board has connected a current sensor which measures the amp draw of the microwave circuit through the brown CT wire looping through it.

  • Page 95: Testing Power Module Board

    Testing Power Module Board The PPI team will post this information. (Similar to Rocket Express) The power module board sends and receives signals from components throughout the unit. The diagram above shows all the wires connected to the control board and which component they belong to.

  • Page 96: Speaker

    CONTROL SYSTEM If a unit has no power, always remember to check the power outlet to verify incoming 208/240 AC voltage and the power supply. The control board is powered by the 12V DC given by the power supply. • If incoming AC voltage from the wall or outgoing DC from the power supply are not present, further troubleshooting is required with the components.

  • Page 97: Power Components

    POWER COMPONENTS...

  • Page 98: Emi Filter

    POWER COMPONENTS EMI Filter The EMI Filter helps suppress the amount of RF interface through the electrical system that is emitted by the microwave circuit. The EMI filter is installed on back of the unit below the blower motor. Testing EMI Filter To test the EMI Filter, test across both terminals for incoming and outgoing AC voltage to verify that the voltage is passing through correctly.

  • Page 99: 12Vdc Power Supply

    12VDC Power Supply The DC Power Supply outputs 12V DC to the main control board. Testing Power Supply WARNING: Make sure to connect the positive (red) Power Supply wire to terminal 1 and negative (black) to terminal 2 on the control board. Switching polarities will cause damage to the control board.

  • Page 100: Ventilation System

    POWER COMPONENTS Ventilation System The Copa Express oven ventilation system uses four 3100 RPM cooling fans (dimensions: 5in/120mm x 5in/120mm) that exhaust all of the hot air from the motor, electronic compartment and high voltage compartment. To exhaust all of the hot air from the magnetrons the Rocket Express oven uses one 2800 RPM sirocco fan.

  • Page 101: Testing Control System Fuses

    Testing Control System Fuses The fuses are mounted on a din rail and can be removed with the use of a flathead screwdriver. 1) Unplug the oven and remove the right-side panel. 2) With a flathead screwdriver, locate the tab on the bottom and push down with the screwdriver.
  • Page 102 FILTERING SYSTEM...

  • Page 103: Filtering System

    FILTERING SYSTEM...

  • Page 104: Air Filter

    FILTERING SYSTEM Air Filter The main purpose for the air filter is to prevent debris from entering the unit. The filter will block dirt, dust, lint, and other particles that can cause build up in the air vent system and other components. The filter is located on the bottom of the unit and can be removed by pulling the filter and tray out towards the front of the oven.

  • Page 105: Catalytic Converter

    475°F (246°C). CAUNTION: The catalyst can only be cleaned by approved non-caustic oven cleaner provided by Pratica Inc. and rinsed with distilled water. The catalytic converter can become seriously damaged if cleaned with any other product.
  • Page 106 COPA EXPRESS SCHEMATICS...

  • Page 107: Copa Express Schematics

    COPA EXPRESS SCHEMATICS...

  • Page 108: Hmi Board Schematic

    COPA EXPRESS SCHEMATICS HMI Board Schematic...

  • Page 109: Control Board Schematic

    Control Board Schematic...

  • Page 110: Heater Schematic

    COPA EXPRESS SCHEMATICS Heater Schematic...

  • Page 111: Blower/Motor Cooling Fan Schematic

    Blower/Motor cooling Fan Schematic...

  • Page 112: Microwave Circuit Schematic

    COPA EXPRESS SCHEMATICS Microwave Circuit Schematic...

  • Page 113: Pictorial Diagram

    Pictorial Diagram The PPI team will post this information. (Similar to Rocket Express)
  • Page 114 EXPLODED VIEW / PARTS LIST...

  • Page 115: Exploded View Parts List

    EXPLODED VIEW PARTS LIST...

  • Page 116: Assembly Level 1

    EXPLODED VIEW / PARTS LIST Assembly Level 1...

  • Page 117: Assembly Door

    Assembly Door...

  • Page 118: Assembly Panel

    EXPLODED VIEW / PARTS LIST Assembly Panel...

  • Page 119: Inverter

    Inverter...

  • Page 120: Assembly Level 2

    EXPLODED VIEW / PARTS LIST Assembly Level 2...

  • Page 121: Door Hinge Assembly Rhs

    Door Hinge Assembly RHS...

  • Page 122: Door Hinge Assembly Lhs

    EXPLODED VIEW / PARTS LIST Door Hinge Assembly LHS...

  • Page 123: Assembly Level 3

    Assembly Level 3...

  • Page 124: Assembly Motor

    EXPLODED VIEW / PARTS LIST Assembly Motor...

  • Page 125: Electric Panel Assembly

    Electric Panel Assembly...

  • Page 126: Assembly Level 4

    EXPLODED VIEW / PARTS LIST Assembly Level 4...

  • Page 127: Gearmotor Assembly

    Gearmotor Assembly...

  • Page 128: High Voltage Assembly

    EXPLODED VIEW / PARTS LIST High Voltage Assembly...
  • Page 130 For service or information: Pratica Products, Inc – USA 675 Town Square Boulevard, Suite 200 Garland, TX 75040 1-214-299-7726 info@praticausa.com www.praticausa.com Pratica Products, Inc - USA 675 Town Square Boulevard, Suite 200 © 2018 Pratica Products, Inc - USA Garland, TX 75040...

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