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SAFETY INSTRUCTIONS

Precautions To Be Observed Before And During
Servicing

(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 resistance,
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.

(c)

Before turning on heating power for any service test or inspection within the heat generating
compartments, check the resistance, and cavity for proper alignment, integrity, and
connections.

(d)

Any defective or misadjusted components in the interlock, monitor, door seal, and heat
generation and transmission systems shall be repaired, replaced, or adjusted by procedures
described in this manual before the oven is released to the owner.

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Содержание Forza Express

Страница 1: ...Prática Products Inc USA 675 Town Square Boulevard Suite 200 2018 Prática Products Inc USA Garland TX 75040 January 2019 For the Forza Express Oven Service Manual ...

Страница 2: ...rnings Please read before lifting oven to prevent injury 8 General Instructions 9 Precautions To Avoid Possible Exposure To Heat 9 DAILY CLEANING QUARTERLY MAINTENANCE 11 Daily Cleaning 12 Quarterly Maintenance 15 THEORY OF OPERATION 19 Forza Express Technology 20 USER SETTINGS 21 Control Panel 22 Cooking 23 Cooking the Food 25 Creating Recipes 26 Edit Mode 27 Importing Exporting Menu 30 MANUFACTU...

Страница 3: ...imit Thermostat 47 Testing High Limit Thermostat 48 Convection Heater 49 Testing Convection Heater 49 IR Element 50 Testing IR Element 50 Testing Heat Circuit Breaker 51 CC IR Temperature Sensors 51 Testing Temperature Sensors 51 CONTROL SYSTEM 53 Main Control Board Display 54 Testing Main Control Board 55 Keypad 56 Testing Keypad 56 Speaker 57 Testing the Speaker 57 POWER COMPONENTS 59 EMI Filter...

Страница 4: ...ic Converter 67 Vent Catalyst 67 FORZA EXPRESS SCHEMATICS 69 Control Board Schematic 70 Heater Schematic 71 Blower Motor Cooling Fan Schematic 72 Pictorial Diagram 73 EXPLODED VIEW PARTS LIST 75 Assembly Level 1 76 Assembly Panel 77 Inverter 78 Assembly Door 79 Assembly Level 2 80 Assembly Motor 81 Assembly Level 3 82 ...

Страница 5: ......

Страница 6: ......

Страница 7: ...1 SAFETY INSTRUCTIONS ...

Страница 8: ...o not allow the power cord to hang over a table or counter to avoid damage and or electrical shock Warning lease refrain from heating liquids or other foods in a sealed container since the package may explode Please refrain from spraying any water or liquid on power cord and do not submerge in water Do note operate the oven in the power cord or outlet is damaged oven has been dropped or physically...

Страница 9: ...d electrician for assistance 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 Fire Risk Reduction Please remove all content from inside the oven before applying power e g utensils paper food particles ...

Страница 10: ...s arcing wear and other damage 4 damage to or loosening of hinges and latches 5 evidence of dropping or abuse c Before turning on heating power for any service test or inspection within the heat generating compartments check the resistance and cavity for proper alignment integrity and connections d Any defective or misadjusted components in the interlock monitor door seal and heat generation and t...

Страница 11: ...5 Specifications Installation ...

Страница 12: ...6 SPECIFICATIONS INSTALLATION ...

Страница 13: ...int 21 5 546mm Depth 31 3 4 805mm Volume 0 74 cu ft 21 Liters Installation Instructions Please read the following instructions carefully Install this unit in accordance with the instructions below Unpacking Instructions 1 Remove the unit from the packaging 2 Check the packaging and oven cavity thoroughly for accessories and literature 3 Discard any packaging inside the cavity e g cardboard plastic...

Страница 14: ...n up by the door handle Doing so may cause the door to misalign or cause damage to door hinges which will not be covered by warranty WARNING Never lift the unit from the removable front panel under the door as it may get damaged or may come loose while lifting WARNING This unit is not meant to be stacked Please contact Pratica Inc for further details WARNING This unit is not meant to be installed ...

Страница 15: ...ation can result in harmful exposure to microwave energy It is important not to defeat or tamper with the safety interlocks b Do not place any object between the oven front face and the door or allow soil or cleaner residue to accumulate on sealing surfaces c Do not operate the oven if it damaged It is particularly important that the oven door close properly and that there is no damage to the 1 Do...

Страница 16: ...10 SPECIFICATIONS INSTALLATION ...

Страница 17: ...11 DAILY CLEANING QUARTERLY MAINTENANCE ...

Страница 18: ...llowed to cool down properly Turn unit off by pressing the power button on panel Open oven door slightly to allow heat to disperse quicker Allow the unit to cool for approximately 30 40 minutes prior to cleaning Step 2 Cleaning the Wire Rack The rack is held in place by 2 metal hooks that act as security tabs to prevent the rack from coming loose Pull up on back part of rack and then pull towards ...

Страница 19: ...her instructions Step 5 Cleaning Air Filter WARNING Filter must be installed during oven use Only remove to clean when oven is not in use The air filter is located under the removable front panel under the door Locate the tab on the filter and pull towards the front of the unit Rinse the filter in hot water to remove any buildup and allow the filter to dry prior to reinstalling Step 6 Removing Foo...

Страница 20: ...owel to remove as much left over cleaner and debris as possible Step 9 Cleaning the Oven Door Spray the cleaner on a nylon scrub pad or cloth to clean oven door If buildup occurs you may spray the cleaner directly on the affected area Dry down using a dry cloth or towel Step 10 Apply Oven Guard Apply the oven guard to a dry cloth or towel Wipe all surfaces of the cavity avoiding the IR element The...

Страница 21: ...ust mask and a pipe cleaner Step 1 Cool Down Oven and Unplug Turn the oven off by pressing the power button on panel Please look at daily cleaning for further instructions on how to clean the cavity Once oven is cooled down carefully unplug the power cord from the outlet Step 2 Remove Air Filter Remove bottom panel under door Locate the tab on the filter and pull towards front of unit Clean or rep...

Страница 22: ...ng Clean the housing cover and verify that the vent slots are not blocked WARNING Do not attempt to clean the catalyst or spray any cleaner directly on it Step 6 Cleaning the Exhaust Pipe Visually look into the exhaust pipe to make sure that it is clean with no blockage You may use a pipe cleaner to break up any buildup id necessary Make sure the exhaust pipe lines up with the vent housing for pro...

Страница 23: ...e the rear panel completely to gain access to both cooling fans You may use a clean damp cloth to clean the cooling fan blades Reinstall the rear panel and verify the vent tube goes into the rear catalyst housing Step 9 Install Air Filter Reinstall air filter and make sure all Phillips screws are secure The oven is ready to be turned on Step 9 Step 8 ...

Страница 24: ...18 DAILY CLEANING QUARTELY MAINTENANCE ...

Страница 25: ...19 THEORY OF OPERATION ...

Страница 26: ...llustrates the steps involving the technology 1 The blower motor spins at high revolutions causing high speed air to circulate trough the top cavity trough the top and bottom jet plate and back to the blower 2 The top heater transfers thermal energy to the circulation air created by the blower motor located in rear of unit 3 The hot air works by creating thermal energy that heats up the product 4 ...

Страница 27: ...21 USER SETTINGS ...

Страница 28: ...l 1 Digital panel 2 Play button 3 Up Down Arrow keys 4 Numerical keypad 5 Temperature control 6 USB function 7 Warning Heater 8 Return Key 9 Ok button 10 Manual cook mode 11 Cool down mode 12 On Off key 1 2 3 3 4 5 6 7 8 9 10 11 12 ...

Страница 29: ...New menu settings can be uploaded using a USB drive or inputting manually Temperature Set Up Preheating 1 Select Cook Temperature by pressing the Temperature ad On Off keys at the same time 2 The following screen will appear and allow changes to be made to the top and bottom set point temperatures by pressing the Enter key 3 To turn the oven press the Play button as shown below ...

Страница 30: ... Soak period of 5 minutes To change this time turn unit off and press the Cool Down and On Off keys at the same time Use the Up Down arrow keys to change from 0 15 minutes 6 The food categories will display when the warm up cycle is complete WARNING Oven cavity and inner door are HOT at this point ...

Страница 31: ...wich category Note The Up or Down arrow keys can be pressed to view categories 5 8 2 The following message will appear while the cook cycle is processing 3 The oven will display Ready when cook cycle is complete The food is ready to be checked or removed at this point WARNING Food content and container be HOT please exercise caution when removing ...

Страница 32: ... get faster results in the recipe creation we suggest to begin programming at 1 10 of the total time of preparation used in a conventional process Later combine the hot air speed variations to reach the desired crispness and color Remember the hot air also transmits heat to the food so keep that in mind when setting blower percentage The food s weight size and shape are critical when setting the t...

Страница 33: ...ress and hold the Down arrow and On Off keys at the same time This will bring up the menu screen and Edit Mode can be accessed from this point 2 Option 2 allow the oven to warm up and bring up menu 3 Press Enter on either the category or sub menu screen and the entire screen will highlight The operator can select the numerical button associated with the category or menu they want to edit ...

Страница 34: ...nge the name of the selected Category Use the numerical keys to name the category 6 Creating Editing a menu Once a category is selected press the Enter key to highlight the menu screen Choose which menu you want to edit by pressing the numerical keys next to the item 7 Press the number 2 to begin editing or creating a menu Press the number 3 to delete the menu selected ...

Страница 35: ...s in the cooking process 9 Each stage has 4 categories as shown below Starting from the top down the options are time chamber temperature RI resistance temperature and blower speed 10 Once the step is complete press the Return key to go back to Steps 1 6 page 11 Repeat the process if additional steps are needed ...

Страница 36: ...e door lift the rubber tab of the USB terminal and insert the USB drive while the unit is on and the menu is displayed b Press c Using the alphanumeric keypad press option 2 or 3 Option 2 Export all recipes from the oven to a USB drive Option 3 Import recipes from a USB drive to the oven Black cover USB ...

Страница 37: ...31 MANUFACTURE SETTINGS ...

Страница 38: ... Information screen To view the Information Screen press and hold the number 2 and the On Off keys at the same time from the oven off position VERSION The current firmware version of the unit COUNT FILTER The total hours of operation TEMP PANEL The temperature inside the electrical compartment that is registered by the Control Board COUNT REC The number of cook cycles ran on the unit ...

Страница 39: ...Measurement or Language press and hold the number 4 and On Off keys at the same time from the oven off position RANGE TEMP Allows to toggle between Fahrenheit and Celsius LANGUAGE The Forza Express has four available language selections which are English Portuguese French and Spanish ...

Страница 40: ...ues to have a problem Second Line Time Out Error Stop Frame Error Timeout Error Left A communication error that occurs when the Main Control Board sends a command signal to the inverter but does not receive the signal back Wrong Frame Error Right A communication error when the board sends a command to the inverter but receives a corrupted signal from the inverter Third Line Inverter Failure Invert...

Страница 41: ... a temperature of 149 degrees Fahrenheit TEMP BOARD MAX The amount of times the board has registered a temperature over 149 degrees Fahrenheit Keypad Test 0To perform a Keypad Test press and hold the number 0 and the On Off keys at the same time from the oven off position The keypad test will verify that each key is functioning when pressed by showing the key function on the screen ex Pressing 0 w...

Страница 42: ...36 MANUFACTURE SETTINGS ...

Страница 43: ...37 ALERTS ERRORS ...

Страница 44: ...blema com o switch é quando o forno mesmo fora de execução das receitas e com a porta fechada emite um alerta sonoro pulsante Inverter Error The display shows INV Error when there is no communication between the electronic board and the frequency inverter This error can be caused by a fault in the inverter or its parameters a problem with the cable or the MODBUS connectors ex inverted connection o...

Страница 45: ...ge Error SC which means Error in the chamber sensors is also displayed on the main display With this error it is not possible to perform any oven functions TPL Error The TPL error appears on the display whenever the temperature in the electronic board region is above 185 F 85 C When this error is displayed it is necessary to check the operation of the fans as well as whether the installations resp...

Страница 46: ...40 ALERTS ERRORS ...

Страница 47: ...41 IMPINGEMENT SYSTEM ...

Страница 48: ... before continuing repairs Please follow the instructions below to test the blower motor 1 Unplug the oven and discharge the capacitors for safety purposes 2 Remove the rear panel from the unit 3 Unplug all 3 wires from the blower motor labeled V W U 4 Check continuity across all 3 windings in different combinations Each combination should have around 5 6 ohms ex V to W V to U W to U If no continu...

Страница 49: ...ter utilizes a data communication protocol called MODBUS to communicate with the main control board The picture below shows the connections of the frequency inverter Note The ground wire must be properly grounded to the chassis Important The switches on the side of the Frequency Inverter should always be in the ON position ...

Страница 50: ...th the frequency inverter If the reset fixes the issue the red triangle indicator light will turn off and the oven will continue with its regular functioning If the communication is not immediately restored the main control board will attempt to reset the inverter ten times before an error message flashes on the inverter display as shown below Frequency Inverter Errors The main control board will ...

Страница 51: ... Control Board sends a command signal to the inverter but does not receive the signal back Wrong Frame Error Right A communication error when the board sends a command to the inverter but receives a corrupted signal from the inverter Third Line Inverter Failure Inverter Alarms Inverter Failure Left An internal error in the inverter that is not caused by a communication failure For Example F021 fai...

Страница 52: ...STEM When a failure occurs the frequency inverter will flash the code on the screen and will prevent the blower motor from operating The following table shows the main failures and alarms that may occur in the inverter ...

Страница 53: ...or is installed in the top of the oven near the ventilation duct while the thermometer bulb of the lower resistance RI is located below the chamber of the equipment Both are protected by the oven s insulation blanket The high limit thermostat protects the oven against overheating When the oven temperature rises above 600 F 320 C the contacts open and shuts off power to the heaters the oven will sh...

Страница 54: ...ght side panel of the unit 3 Unplug the wires and test for continuity If continuity is present the high limit is not tripped If there is no continuity between both terminals the high limit has tripped and will need to be replaced or further troubleshooting is required to find the cause ...

Страница 55: ... physical damage to the heater or wires If any damage is seen remember to unplug the unit before continuing 3 Locate the top heater contactor on right side of unit to get amp draw 4 Place amp clamp around bottom right heater wire and turn unit on The amp draw should be between 14 16 amps on the white wire If there is no amp draw verify the heater breaker is not tripped If the breakers are not trip...

Страница 56: ...of the unit 2 Look for any physical damage on the heater element or wires If any damage is seen remember to unplug the unit before continuing 3 Locate the top heater contactor on right side of unit to get amp draw 4 Place amp clamp around bottom right heater wire and turn unit on The amp draw should be between 14 15 amps on the bottom white heater wire If there is no amp draw verify the heater bre...

Страница 57: ...ss 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 When an error in the cook chamber sensor occurs the board will stop the operation of the oven and will display the following fault code on the screen If the IR temperature se...

Страница 58: ...n and needs to be replaced 4 If continuity is present a jumper wire can be placed on the control board terminals where the temperature sensor wires were installed Once the jumper wire is installed the board should register room temperature on the temperature sensor verification screen Warning Make sure to unplug the unit before installing jumper wire Once the jumper wire is installed plug the unit...

Страница 59: ...53 CONTROL SYSTEM ...

Страница 60: ...Board Display The control board signals each oven component based on commands sent from the keypad that were selected by the operator The display is attached to the control board and will come together if the control board is ordered ...

Страница 61: ... observed replace the component or repair the wire if needed 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 12VDC 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 I...

Страница 62: ...this point you will be able to press each individual button and the display register the command 3 If the problem is only with a single button and it the display does not register the command when pressed the keypad will need to be replaced 4 If the problem is with all the buttons on the keypad Check the ribbon cable for any damage or loose connection at the control board If damage is present repl...

Страница 63: ...ompleted Testing the Speaker If the speaker is no longer audible check the speaker wires to make sure they are secure on the terminals If wires are secure check the wires for DC voltage coming from the control board If DC voltage is present replace the speaker If the speaker sound is very faint the speaker will need to be replaced ...

Страница 64: ...58 CONTROL SYSTEM ...

Страница 65: ...59 POWER COMPONENTS ...

Страница 66: ... test across both terminals for incoming and outgoing AC voltage to verify that the voltage is passing through correctly 1 Remove rear panel from unit 2 Measure voltage across both input terminals should be 208 or 240V 3 Measure voltage across both output terminals if the voltage is the same as input the EMI Filter is good If the voltage is different by a large margin replace the EMI Filter 12VDC ...

Страница 67: ... line voltage move on to step 3 If the multimeter does not read line voltage verify the wires are secure the store breaker is not tripped and correct voltage is getting to the unit or oven fuse is not blown 3 Measure the DC voltage in the bottom two terminals labeled V and V as shown in the picture below If the multimeter registers 12VDC then the power supply is good If the multimeter registers a ...

Страница 68: ...ly discharge capacitors before troubleshooting cooling fans due to proximity 1 Unplug the unit and remove the rear panel 2 Manually verify the cooling fan spins freely and not seized If cooling fan is seized not spinning replace the cooling fan 3 Disconnect the cooling fan cables from the connectors and check for continuity If the meter registers continuity then the cooling fan is fine If the mete...

Страница 69: ... rail and can be removed with the use of a flathead screwdriver 1 Unplug the oven and remove the right side panel 2 Open the fuse post by pushing the cover to the right 3 Remove the fuse and check for continuity If the fuse reads open replace the fuse Fuse Post Fuse ...

Страница 70: ...64 POWER COMPONENTS ...

Страница 71: ...65 FILTERINGSYSTEM ...

Страница 72: ...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 The filter can be rinsed off with water and reinstalled allow filter to air dry before reinstalling in oven This filter does require regular maintenance and occasional replacement if damaged The filter must be kept clean to ensure proper ventilation o...

Страница 73: ...F 246ºC CAUTION 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 Vent Catalyst In addition to the main catalytic converter the oven contains a secondary catalyst in the vent tube path This catalyst further assists in the breakdown of gr...

Страница 74: ...68 FILTERING SYSTEM ...

Страница 75: ...69 FORZA EXPRESS SCHEMATICS ...

Страница 76: ...70 FORZA EXPRESS SHEMATICS Control Board Schematic ...

Страница 77: ...71 Heater Schematic ...

Страница 78: ...72 FORZA EXPRESS SHEMATICS Blower Motor Cooling Fan Schematic ...

Страница 79: ...73 Pictorial Diagram ...

Страница 80: ...74 FORZA EXPRESS SHEMATICS ...

Страница 81: ...EXPLODED VIEW PARTS LIST ...

Страница 82: ...Assembly Level 1 ...

Страница 83: ...Assembly Panel ...

Страница 84: ...Inverter ...

Страница 85: ...Assembly Door ...

Страница 86: ...Assembly Level 2 ...

Страница 87: ...Assembly Motor ...

Страница 88: ...Assembly Level 3 ...

Страница 89: ......

Страница 90: ...n Square Boulevard Suite 200 2018 Prática Products Inc USA Garland TX 75040 For service or information Prática Products Inc USA 675 Town Square Boulevard Suite 200 Garland TX 75040 1 214 299 7726 info praticausa com www praticausa com ...

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