Pratica Copa Express User manual

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

ii
INDEX
SAFETY INSTRUCTIONS ...........................................................................................1
IMPORTANT SAFETY INSTRUCTIONS................................................................................................................2
GROUNDING INSTRUCTIONS .........................................................................................................................3
POWER CORD REPLACEMENT .......................................................................................................................3
FIRE RISK REDUCTION .................................................................................................................................3
PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE
MICROWAVE ENERGY .................................................................................................................................4
SPECIFICATIONS & INSTALLATION...........................................................................5
SPEC SHEET...............................................................................................................................................6
CERTIFICATIONS .........................................................................................................................................7
ELECTRIC SPECIFICATIONS ............................................................................................................................7
OVEN DIMENSIONS ....................................................................................................................................7
INSTALLATION INSTRUCTIONS........................................................................................................................7
UNPACKING INSTRUCTIONS ..........................................................................................................................7
INSTALLATION WARNINGS:PLEASE READ BEFORE LIFTING OVEN TO PREVENT INJURY................................................8
GENERAL INSTRUCTIONS..............................................................................................................................9
PRECAUTIONS TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY ................................................9
DAILY CLEANING & QUARTERLY MAINTENANCE...................................................11
DAILY CLEANING ......................................................................................................................................12
QUARTERLY MAINTENANCE........................................................................................................................15
THEORY OF OPERATION........................................................................................19
COPA EXPRESS TECHNOLOGY......................................................................................................................20
CHARACTERISTICS OF MICROWAVES.............................................................................................................21
OVEN CONTROLS AND COOKING ..........................................................................27
PREHEATING ...........................................................................................................................................28
EXECUTING A RECIPE.................................................................................................................................28
ACCESSING THE OPTIONS...........................................................................................................................30
TEST MODE ............................................................................................................................................31
CREATING RECIPES ...................................................................................................................................32
DAILY CLEANING GUIDE.............................................................................................................................33

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USER SETTINGS.....................................................................................................35
ACCESSING USER SETTINGS ........................................................................................................................36
EDIT GROUP............................................................................................................................................37
EDIT RECIPES...........................................................................................................................................38
PREHEATING ...........................................................................................................................................39
USB......................................................................................................................................................39
CHANGE LANGUAGE .................................................................................................................................40
CURRENT TEMPERATURE ...........................................................................................................................40
DATE/TIME ADJUSTMENT..........................................................................................................................40
CELSIUS /FAHRENHEIT ..............................................................................................................................41
CHANGE PASSWORD.................................................................................................................................42
EDIT ACCESS ...........................................................................................................................................42
MANUFACTURE INFORMATION ...................................................................................................................43
TECH SUPPORT ........................................................................................................................................43
RESTORE FACTORY SETTINGS ......................................................................................................................43
MANUFACTURE SETTINGS ....................................................................................45
ACCESSING MANUFACTURE SETTINGS ..........................................................................................................46
ELECTRICAL LOAD TEST..............................................................................................................................47
READ INPUTS...........................................................................................................................................47
CHANGE PASSWORD.................................................................................................................................47
CURRENT SENSOR ....................................................................................................................................48
COUNTERS ..............................................................................................................................................48
OVEN DATA ............................................................................................................................................48
ENGINE CONTROL ....................................................................................................................................49
PREHEATING SPEED ..................................................................................................................................49
VOLTAGE................................................................................................................................................49
ALERTS & ERRORS.................................................................................................51
ALERTS AND ERRORS:POSSIBLE SOLUTIONS...................................................................................................52
ALERTS...................................................................................................................................................52
ERRORS..................................................................................................................................................53
ALERTS &ERRORS TABLE...........................................................................................................................53
MICROWAVE SYSTEM...........................................................................................55
THE MICROWAVE SYSTEM .........................................................................................................................56

iv
INDEX
HOW IT WORKS.......................................................................................................................................56
MICROWAVE PROTECTION SYSTEM..............................................................................................................56
DOOR AND DOOR SWITCHES ......................................................................................................................57
DOOR SWITCHES......................................................................................................................................58
DOOR SWITCH ADJUSTMENTS ....................................................................................................................59
COMPONENTS .........................................................................................................................................61
MICROWAVE SEALS AND GASKETS...............................................................................................................72
TESTING FOR MICROWAVE LEAKAGE ............................................................................................................74
IMPINGEMENT SYSTEM ........................................................................................75
BLOWER MOTOR .....................................................................................................................................76
TESTING BLOWER MOTOR .........................................................................................................................76
FREQUENCY INVERTER (WEG CFW 100).....................................................................................................77
FREQUENCY INVERTER TROUBLESHOOTING....................................................................................................78
HIGH LIMIT THERMOSTAT ..........................................................................................................................81
TESTING HIGH LIMIT THERMOSTAT..............................................................................................................81
CONVECTION HEATER ...............................................................................................................................82
TESTING CONVECTION HEATER ...................................................................................................................82
IR ELEMENT ............................................................................................................................................83
TESTING IR ELEMENT................................................................................................................................83
CC/IR TEMPERATURE SENSORS ..................................................................................................................84
TESTING TEMPERATURE SENSORS................................................................................................................84
CONTROL SYSTEM.................................................................................................87
MAIN CONTROL BOARD/DISPLAY................................................................................................................88
TESTING POWER MODULE BOARD...............................................................................................................89
SPEAKER.................................................................................................................................................90
TESTING THE SPEAKER ...............................................................................................................................90
POWER COMPONENTS .........................................................................................91
EMI FILTER.............................................................................................................................................92
TESTING EMI FILTER.................................................................................................................................92
12VDC POWER SUPPLY............................................................................................................................93
TESTING POWER SUPPLY............................................................................................................................93
VENTILATION SYSTEM ...............................................................................................................................94
TESTING COOLING FANS ............................................................................................................................94
TESTING CONTROL SYSTEM FUSES ...............................................................................................................95

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FILTERING SYSTEM................................................................................................97
AIR FILTER ..............................................................................................................................................98
CATALYTIC CONVERTER .............................................................................................................................99
VENT CATALYST .......................................................................................................................................99
COPA EXPRESS SCHEMATICS...............................................................................101
HMI BOARD SCHEMATIC.........................................................................................................................102
CONTROL BOARD SCHEMATIC...................................................................................................................103
HEATER SCHEMATIC................................................................................................................................104
BLOWER/MOTOR COOLING FAN SCHEMATIC...............................................................................................105
MICROWAVE CIRCUIT SCHEMATIC .............................................................................................................106
PICTORIAL DIAGRAM...............................................................................................................................107
EXPLODED VIEW PARTS LIST ...............................................................................109
ASSEMBLY LEVEL 1 .................................................................................................................................110
ASSEMBLY DOOR ...................................................................................................................................111
ASSEMBLY PANEL...................................................................................................................................112
INVERTER..............................................................................................................................................113
ASSEMBLY LEVEL 2 .................................................................................................................................114
DOOR HINGE ASSEMBLY RHS...................................................................................................................115
DOOR HINGE ASSEMBLY LHS...................................................................................................................116
ASSEMBLY LEVEL 3 .................................................................................................................................117
ASSEMBLY MOTOR.................................................................................................................................118
ELECTRIC PANEL ASSEMBLY ......................................................................................................................119
ASSEMBLY LEVEL 4 .................................................................................................................................120
GEARMOTOR ASSEMBLY ..........................................................................................................................121
HIGH VOLTAGE ASSEMBLY .......................................................................................................................122

vi
INDEX

1
SAFETY INSTRUCTIONS

2
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
•Please read all safety instructions prior to using this unit.
•This oven MUST be grounded. Please make sure the power outlet is properly grounded before
connecting power plug.
•Make sure to read the installation instructions to properly install the oven and prevent voiding
the warranty.
•This Prática oven should only be serviced by qualified/authorized service personnel.
•Please keep power cord away from hot /heated surfaces to prevent damage.
•Only use utensils/containers that are suitable for use in microwave ovens.
•Warning: This unit is not intended for use with feeding bottles or baby food jars as the
contents can become extremely hot and may cause serious injury.
•Do 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.
•Do not use metal lids or aluminum foil while cooking in this oven.
•Please refrain from spraying any water or liquid on power cord and do not submerge in water.
•Do not operate the oven in the power cord or outlet is damaged, oven has been dropped or
physically damaged or oven is not working properly as further damage to unit or components
may occur.
•Do not allow children to use this oven as serious harm to child can occur.
•Do not use a water hose or jet to clean this oven. Please see proper cleaning instructions on
page 12-17
•Please store oven in a controlled indoor environment.
•Do not block any air vents on unit as is may cause damage to components due to improper air
flow.
•Do not utilize any corrosive liquids, chemicals, or vapors as it may cause damage to oven
and/or components (e.g., oven cavity, catalytic converter, blower motor, etc.).
•Please exercise caution when heating liquids such as eater, tea, coffee, etc., as they can reach
above boiling temperature and not show signs which can cause personal injury.
•Only operate this appliance if you have experience or knowledge or have been given
supervision or verbal/visual instructions.

3
Grounding Instructions
This unit must be properly grounded to avoid electrical shock. This unit is equipped with a 3-prong
grounding plug that has a grounding wire. This plug must be connected to a properly installed and
grounded outlet. In the event of an electrical short, properly grounding the unit reduces the risk of
electrical shock by grounding the electrical current. If any doubts exist about the grounding
instructions or if you are unsure is the outlet is properly grounded, please contact a qualified
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, etc.).
•Do not utilize the cook cavity for storage.
•If fire inside the cavity occurs, shut the oven door and unplug the machine. Fallow your
locations fire regulations as needed.
•Do not overcook food.
•If smoke occurs, disconnect power and leave door closed. Allow unit to cool down prior to
removing contents and cleaning.

4
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.
(c) Before turning on microwave power for any service test or inspection within the microwave
generating compartments, check the magnetron, wave guide or transmission line, and cavity
for proper alignment, integrity, and connections.
(d) Any defective or misadjusted components in the interlock, monitor, door seal, and microwave
generation and transmission systems shall be repaired, replaced, or adjusted by procedures
described in this manual before the oven is released to the owner.
(e) A Microwave leakage check to verify compliance with the Federal performance standard
should be performed on each oven prior to release to the owner.

5
SPECIFICATIONS & INSTALLATION

6
SPECIFICATIONS & INSTALLATIONS
Spec Sheet

7
Certifications
Electric Specifications
Copa Express
Voltage
Frequency
Power
Circuit breaker
Consumption
208V
60Hz
6.2kW
30A
4.3kW/h
240V
50Hz
6.9kW
30A
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.
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, etc.).

8
SPECIFICATIONS & INSTALLATIONS
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.
WARNING: Never lift the oven 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 in an enclosed area without proper
ventilations. Damage may occur to components is oven installed in a structure that has 5 or
more sides preventing the minimum 4-6in clearance on side and 6-12in clearance from back
to wall.

9
General Instructions
•The oven must be installed on a base or counter that supports the oven’s weight, approximately 174
lbs. (79 kg).
•A minimum space of 4-6in between the walls and the sides and 6-12in between the walls and the back
of the oven are required.
•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.
Precautions To Avoid Possible Exposure To
Excessive Microwave Energy
(a) Do not attempt to operate this oven with the door open since open-door operation 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) Door (bent), (2) hinges and latches (broken
or loosened), (3) door seals and sealing surfaces.
(d) The oven should not be adjusted or repaired by anyone except properly qualified service
personnel.
(e) Include additional radiation safety precautions or instructions which may be necessary for
particular oven designs or models, as determined by the Director, Center for Devices and
Radiological Health or the manufacturer.
NOTE: If the oven microwave system is operable at the time of service, a microwave emission check
should be performed prior to servicing the oven.
Testing guidelines for microwave emission testing can be found on page 74.

10
DAILY CLEANING & QUARTERLY MAINTENANCE

11
DAILY CLEANING & QUARTERLY MAINTENANCE

12
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.
Cleaning Supplies and Equipment:
Chemco Dirt Buster III Oven Cleaner (Non-Caustic)
Chemco Oven Shield Protectant
Protective gloves, clean dry and damp towels or cloths, protective eyewear, nylon scrub pad, food
vacuum (optional), and dust mask (optional).
Step 1: Cool Down Oven
WARNING: The unit normally operates around 500°F (260°C) and
can cause serious injury if not allowed 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 the front of the unit.
•The rack should come free at that point and will be able to be washed,
rinsed, and sanitized.
Step 3: Cleaning the Bottom Jetplate
•Lift the front of the jetplate up by gripping the front lip.
•Pull the jetplate towards the front of the unit and remove from
completely.
•Avoid using wire brushes to clean the jetplate as is can cause deep
grooves which can result in arcing from the microwave circuit.
•Wash, rinse and sanitize the jetplate.
Step 2
Step 3
Step 1

13
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).
•Lift the catalytic converter up out of the holding bracket.
•Clean the catalytic converter using the approved cleaning materials
and allow to dry prior to reinstalling back in unit.
•The catalyst does not have to be cleaned daily if it is not contaminated
with food particles but must be cleaned quarterly. Please refer to
quarterly cleaning for further 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 Food Particles from Cavity
•If food particles remain on the bottom of the cavity, the IR element
can be lifted for better access.
•The best way to remove food particles is with a damp cloth but a food
vacuum can also be used.
WARNING: Do not attempt to spray the IR element directly. If any
particles are stuck to the element. Allow the element to cool down
completely and wipe off with dry cloth.
Step 4
Step 6
Step 5

14
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.
•Do not spray IR element directly.
•Do not use a wire brush or steel wool to clean cavity as it can cause
damage to interior walls.
WARNING: Do not use water hose or jet to clean cavity.
Step 8: Wiping Down Oven Cavity
•Wipe down the oven cavity with a damp cloth or towel.
•Do a final pass with a dry cloth or towel 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 guard will aid in preventing large buildup from occurring.
Step 11: Reinstalling Components
•Reinstall the catalyst inside the holding brackets. Make sure to push it
all the way down to prevent the bottom jetplate from pushing against
it.
•Reinstall bottom jetplate and rack assembly.
•Close the door and insert filter back into position and close the filter
tray
•Reinstall bottom panel under door.
Step 7
Step 8
Step 9
Step 10