KRATOS 29-056 Series Electric Convection Oven User Manual

Kratos Electric Convection Ovens
User Manual

29-056 Series Electric Convection Oven

USER MANUAL-INSTALLATION GUIDE
29Y-056, 29Y-057, 29Y-060, 29Y-061
GAS COUNTER SERIES
HOT PLATES

This manual contains important information regarding your Kratos unit. Please read the manual thoroughly prior to equipment set-up and operation maintenance.
Failure to comply with regular maintenance guidelines outlined in the manual may void the warranty. Improper installation, adjustment, alteration, service or maintenance can cause property damage, injury or death. Read this manual thoroughly before installing or servicing this equipment.

Model: 29-056/-057/-060/-061
Name: Electric Convection Oven

Congratulations! You’ve made a great purchase by selecting a Kratos Electric Convection Oven. Every Kratos product is manufactured with the customer in mind by providing the best value without sacrificing the quality.
You will find that your new equipment has been designed and manufactured to meet the toughest standards in the industry. Each piece of the equipment is carefully engineered, and designs are verified through laboratory tests and field installations. With proper  care and field maintenance, you will experience years of reliable, trouble-free operation. For best results, read this manual carefully. Whatever your need is presently or in the future, look to Kratos as your full-service solution.
Limited to some special structures, additional specified items or new technology changes, the actual usage situation might be some different from what stated in this user’s manual. Should you have any question, please do not hesitate to contact the manufacturer via the method shown in back cover page of this manual.
For safety purpose and efficient operation, please make this document available to users for reference. Do have them to read this manual carefully before carry out any action on this device, especially when starting.

The manufacturer declines any responsibility in the event users do not follow the instructions or guidelines stated here.
The user’s manual should be placed close to the device, in convenience of users’ reading before operation. We have the full authority to reserve the further technical changes of the device, in the scope of further performance improvement characteristic development.

The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of fire or electric shock to persons.
  The acclamation point within an equilateral is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.

Warning

◆ Any self-modification, wrong installation, adjustment or maintenance can lead to property loss or casualty. Please contact the manufacturer for any adjustment or maintenance, and have the work done by a trained & qualified person.
◆ For your safety sake, please keep the machine away from any liquid, gas or other object, which is flammable or explosive.
◆ This appliance should not be operated by those who have physiological, perceptual or mental disabilities or those who have insufficient experience or knowledge (including children). Only in conditions of being given sufficient supervise & guarantee of personal safety, as well as proper instructions & guidance, those who were mentioned above can make some particular operation of this device.
◆ Keep children away from the device.
◆ Preserve this manual safely. When passing on/selling the device to a third party, the manuals must be handed over along with the device. All users must operate the device complying with the user’s manual and related safety guidelines.
◆ Do not store or use gas, liquid or object that is flammable or explosive in vicinity of the mounting position.
◆ If the appliance is placed near walls, partitions or kitchen furniture and the like, it is advisable to make these facilities with non-combustible material, otherwise cover them with non-combustible heat-resistant material, and pay attention to fire prevention regulations.

Functional Introduction

High-efficiency oven with high-efficiency heating tube, direct forced hot-air system, 208V/220-240V 60Hz，one or three phases.
Electronic temperature controller.
Double layer heat-resistant glass doors and windows with chamber light.
60 minutes continuous bell timer, also can be manually cut off.
Temperature range: 150℉（65℃）-550℉（288℃）.
1/2-1/10HP two-speed air cooling fan & motor.
Cooling fan code.
With electric heating indicator light and power stand-by indicator light.
Stainless steel chamber with arc angles.
11 removable grid rail, space 1 5/8 “, 3 chrome net frames.
The top & front part are made by stainless steel.
Black coating steel feet are adjustable.
Independent stainless steel door, double-layer heat-resistant glass window, with separate door handles.
Stainless steel door seal.
Double equipment, superposition device.
Hinged control panel installed in the front, easy to disassemble & repair.
The top, side, back of the oven & the internal are made by industrial durable insulation materials.

Specifications

Full size electrothermal forced convection oven, single or double layer free combination, monolayer & two-layer for free combination.
Standard specification: high-efficiency heating tube, two-speed fan with cooling function, driven by the efficient 1/2-1/10HP air-cooling fan & motor.
The door interlocking switch have the function to turn off the motor & heating tubes automatically when the door opened. In the air-cooling code, the fan is started when the door is opened for rapid cooling.
60 minute timer with a continuous ring alarm, can cut off the alarm manually. When the electric heating tube works, the indicator light is illuminated.
Oven internal size: 29″×20″×22 1/4″, detachable 11 shelf guides, 1 5/8″ spacing, with 3 adjustable chrome shelves
Note: food cannot be placed directly on the grid when cooking food.
The external size of the oven is: length: 38.1 “; width: 37.8″ without handle, 41.5 ” with handle, high: 29.2 ” without leg, its front, top and decorative strips are made of stainless steel.
Independent of the open type stainless steel door, two doors can be opened separately, with 2-layer heat-resistant glass, stainless steel seals and cool- touch handles for each door. The inside and outside of the furnace is with 2 “industrial material for complete insulation. Standard bore lamp.

Structure Schematic Diagram

Basic Features & Parameters

| Electric Convection Oven
---|---
Dimension (in)| 38.11″x41.45″x54.09-
Net Weight| 231.5Ibs
Packing Dimension (in)| 47.25″x40.95″x38.58″ (wooden packing)
Gross Weight| 2781bs
Oven Capacity:(L)| 29″x20″x22 1/4″ (Length x height x width)
Temperature Range (T) ( C)| 150°F – 550°F
Power Parameters

Model| Total power (kW)| Voltage| Phases| Amps| Fan-50HZ| Fan-60HZ
Ll| L2| L3| High Speed| Low Speed| High Speed| Low Speed
29Y-060| 9.0| 208| 3| 27| 24| 27| 1425| 748| 1725| 850
29Y-061| 10.1-11.9| 220-240| 3| 30| 27| 30| 1425| 748| 1725| 850
29Y-056| 9.0| 208| 1| 43| —| 43| 1425| 748| 1725| 850
29Y-057| 10.1-11.9| 220-240| 1| 50| —| 50| 1425| 748| 1725| 850
Remark:| Each device needs a separate electrical connection.
Each model can be assembled into double stacked version.

Precautions & Recommendations

5.1 Installation

1. Before beginning the installation, remove the packaging. A few parts are protected with an adhesive film, which should be removed carefully. Remove any glue residual with the proper substances, such as petrol; never use abrasive substances。

2. Mount the unit legs; the unit must be leveled; small differences of height can be solved by adjusting the feet.

3. We recommend placing the unit under a ventilation hood so that vapor can quickly evacuate.

4. Install the unit at least 2” from the wall if the wall does not bear a minimum temperature of 300F (see Fig.1). If the unit is placed very close to the wall, partition walls, kitchen cabinets, decorative walls, etc., we recommend that they are made with a non-combustible material with a proper thermal insulation. Pay close attention to regulations concerning fire prevention. Do not locate the oven adjacent to any high heat or grease-producing piece of equipment, such as a range top, griddle, fryer, etc., that could allow radiant heat to raise the ecterior temperature of the oven above 130℉. Do not mount above other cooking equipment.

5. Law provisions, technical regulations and directives:
   The manufacturer declares that the appliances comply with the EEC directives and the particular reference regulations. The manufacturer requires the installation to be performed according to the regulations in force. Before installing, check that the following provisions are met:
   • Building regulations and local fire prevention measures
   • Accident prevention regulations in force
   • Local Gas Board regulations
   • Local electric energy supply Board regulations

6. Notes for the installer:
   • Explain and demonstrate how the appliance works to the user according to the instructions, and hand him the user’s manual.
   • Remind the user that, in the event of any structural alterations or modifications to the room that houses the appliance, the appliance functions must be rechecked.

7. Room ventilation:
   • The room where the appliance is installed must be fitted with air intakes to guarantee the correct operation of the unit and air exchange
   • Do not install the appliance close to other units that can reach high temperature: the electrical components might be damaged.
   • During installation, make sure the air suction and evacuation ways are free from any obstacles.

5.2 Electric Connection

1. Before connecting the appliance to the network, check the following:
   • Network voltage corresponds to the data written in the plate.
   • Grounding is efficient.
   • The connection cable is suitable to the power absorbed by the appliance.

2. Place a device before the appliance itself that allows the unit’s disconnection from the mains circuit in an omni polar way; this device must have an opening of contacts of at least 3mm. safety switches can be used. The omni polar switch must be close to the appliance, be approved and have a section suitable to the appliance.

3. The cable must be the Oil resistant type. The YELLOW-GREEN ground cable must be longer than the others in the event that, if the cable stopper breaks, the cable will disconnect after the tension cables. The YELLOW-GREEN cable must never be broken. The yellow-green cable must be connected to the terminal firstly and then connected to the outer layer. The grounding element must be attached to the machine enclosure.

5.3 Adjustable Foot And Caster Installation

• When install the adjustable foot, make the mounting screws into correct position and tighten up.
  According to the machine balance , could adjust the screw on the feet to make stable.

• Caster installation：

1. The casters with the brakes are installed in the front, and the casters without the brakes are installed in the rear.
2. The electric convection oven equipped with caster must be installed the limit devices at the same time. To limit the pulling power cord or connector (below D), this device can soft connect oven back and the wall or floor.
3. The chain or wire rope are available to use for connection material(below E). One end is fixed on the wall or the ground (below C), another end is fixed at the back of the oven (back strip gaps, the following figure location B); The fixed length is no more than 4/5 of the power cord (figure D). Kratoms does not provide the required connection materials and joints.

A Oven Back
B Limiting Position (the another end is fixed to the wall or ground)
C Fixed on the wall
D Power cord
E Chain

5.4 Usage Considerations For Double Stacking

1. If two appliances are needed for simultaneous operation, to save space, these two products can be stacked together to use.
2. During stacking, replace the long leg with 6” leg or caster as indicated in Fig.3.
3. Fic the intersection area between the top and bottom appliance with a connecting panel as indicated in Fig.4.
4. If the double stacked version is equipped with casters, a restraining device, which should be fixed to the bottom appliance, must be installed to limit the movement of the appliance. See 5.3 for installation.

CAUTION：
– This product has two power supply cords. Connect each Power Supply Cord to a receptacle that is connected to an individual branch circuit. Disconnected both cords before moving or servicing this appliance.

5.5 Warnings

1. Always supervise the appliance while being used and never let it run while empty.
2. The appliances do not require special adjustment assistance from specialized personnel if the adjustments are carried out by the user during the use of the appliance.
3. Use only the accessories recommended by the manufacturer.
4. During the initial uses of the appliance, an acid or burning smell may be detected. This will disappear after two or three uses.
5. After use, the areas are hot for a certain amount of time (residual heat). Avoid resting your hands on them and allowing children to get too close.
6. These are very important regulations; if they are neglected, the appliance may not perform properly or the user may be placed at risk.
7. The appliance is strictly for professional use and must be used by qualified personnel.
8. The installation, start-up and maintenance of the appliance must be carried out by qualified personnel.
9. All installation works must be carried out according to the law in force. The manufacturer is not responsible for damages due to an incorrect installation, bad maintenance or incorrect use.

Working Instructions & Operation Flow

6.1 Operating the Controls
A convection oven is a different type of oven that offers many features and advantages to the food service operation. The additional capabilities and features of the oven require some learning. However, the operation of the oven is not difficult to understand or control once you have some practice. See the controls in the following feature:

6.2 Operations

Turn the oven ON and select a cooking temperature. Two additional controls are used to control the fan (as described below).
The timer is a reminder to you of when to remove food from the oven. The timer does not control the temperature of the oven.

To cook, do the following:

1. Turn the oven ON using the Power Switch at the top of the control panel.

2. Select the desired fan speed using the Fan Speed switch. The appropriate fan speed (HI or LOW) depends on the type of food being cooked.

3. Switch the Fan Mode switch to COOK. The fan will run continuously when the oven doors are closed (the fan does not cycle on and off with the burners). (If this switch is set to COOL, the only difference is that the fan will continue to run when the oven doors are open.)

4. Set the cooking temperature by turning the Cook Temperature Control until the indicator mark on the knob is pointed to desired cooking temperature. The HEAT ON indicator will light when the burners are on and will remain on while the oven preheats.

5. Wait until the HEAT ON indicator has come on and gone out three times. At that time the oven will have reached the set cooking temperature.

6. Open the oven doors, load the product into the oven, and close the doors.

7. You can use the Cook Timer as a reminder of when to remove the load from the oven. If so desired, turn the Cook Timer knob until the indicator mark points to the desired cooking time (up to 60 minutes). The timer knob will rotate counterclockwise as the timer runs down, indicating how much time remains. You can turn the knob while cooking to increase or decrease the remaining time. When the timer runs out, a buzzer will sound (To immediately silence the buzzer, turn the Cook Timer knob to the OFF position.) The timer is a reminder to you; the timer does not control the oven.
   If you open the oven doors, the burners and fan will shut off until the doors are closed. However, the timer will continue running even if the doors are open.
   For ovens that are equipped with an oven interior light, to turn on the light, press and hold the switch located at the bottom of the control panel.

8. When the load has finish cooking, you can rapidly cool the load by opening the oven doors (which will shut off the burners) and switching the Fan Mode to COOL (which will cause the fan to run even though the doors are open). For the most rapid cooling, also switch the Fan Speed switch to HI.

9. When you are done cooking, turn the Cook Temperature Control to the lowest setting (fully counterclockwise) and switch the Power Switch to OFF.

Electrical Diagram

XL—connecting terminal
KM1/KM2—AC contactor
EH1 EH2 EH3— electric heating tubes
QF—air switch
S1—protection switch of Electrical boc
S2—power switch
S3—Door control
S4—interior light switch
S5—cooling switch
S6—fan switch(HI or LOW)
HL1—interior light
HL2/HL3—indicator light
M—motor
PT—timer
HA—buzzer
IC—electronic thermostat
θ—temperature limiter

XL—connecting terminal
KM1/KM2—AC contactor
EH1 EH2 EH3— electric heating tubes
QF—air switch
S1—protection switch of Electrical box
S2—power switch
S3—Door control
S4—interior light switch
S5—cooling switch
S6—fan switch(HI or LOW)
HL1—interior light
HL2/HL3—indicator light
M—motor
PT—timer
HA—buzzer
IC—electronic thermostat
θ—temperature limiter

Cleaning & Maintenance

1. Before cleaning, switch off the unit and let it cool down.

2. Carefully clean daily the appliance to guarantee its proper operation and long life.

3. Steel surfaces must be cleaned with a dish washer detergent diluted in very hot water by using a soft cloth; for the toughest dirt, use ethylic alcohol, acetone or another non-halogenated solvent; do not use abrasive powder detergents or corrosive substances such as hydrochloric acid, muriatic or sulphuric acid. The use of acids can affect the unit’s operation and safety. Do not use brushes, steel cottons or abrasive disks made with other metals or alloys that might cause rust stains due to contamination. For the same reason, avoid contact with iron objects. Do not use steel cottons or stainless steel brushes because whilst they will not contaminate surfaces, they can cause damaging scratches.

4. Metal powder, metal shavings from working and iron material in general, when in contact with stainless steel surfaces, can cause rust stains. Superficial rust stain might be present on new appliances and they can be removed with a detergent diluted in water and a Scotch Brite sponge.
   If dirt is tough, do not use sandpaper or rough paper, but use synthetic sponges (for example Scotchbrite sponges).

5. Do not use substances for cleaning silver and be careful with hydrochloric or sulphuric vapors coming from floor washing products, for example. Do not aim water jets directly on the appliance, it might be damaged. After cleaning, rinse properly with clean water and dry carefully with a cloth.

6. The appliances are made in a way that little maintenance is necessary. Despite this, we recommend that the user subscribes to a maintenance agreement to have the appliance checked at least once a year by the specialized personnel of our assistance service or by a specialized technician.

7. Before carrying out any maintenance or repair, disconnect the appliance from the gas network or cut off the mains. Use only original spare parts supplied by the manufacturer.

8. If the appliance is not used for long period of time, please clean the equipment and the surrounding areas properly. Pour a small quantity of cooking oil on the stainless steel surfaces. Carry out all maintenance operations. Cover all appliances with a suitable material and leave a few openings to allow air to circulate.

1 year Equipment Limited Warranty

Kratos offers a 1 year warranty to the original purchaser of new equipment, the model of equipment will be free of defects in material and workmanship for a period of 1 year from the date of delivery. Warranty is not transferrable. Kratos, at its own discretion, will provide replacement components, replace the entire unit or refund the purchase price to satisfy the warranty obligation.
Kratos makes no other warranties, express or implied, statutory or otherwise, and hereby disclaims all implied warranties, including the implied warranties of merchantability and of fitness for a particular purpose.

The year limited warranty does not cover:

• Failure to install and/or use equipment within proper operating conditions as specified by Kratos.
• Outdoor use will void the warranty. The finish is not guaranteed in mobile applications where the table can be damaged due to not being secured to the floor.
• Products that have been modified, abused, or misused. Any products that have been exposed to corrosive or other cleaners not intended for use on stainless steel will void the warranty.
• Any products sold outside the contiguous United States.
• Any products where the original sale cannot be determined. No order #, invoice or receipt to provide proof of purchase will result in no warranty coverage.
• Labor or service not authorized by Kratos is not covered under this warranty.
• Freight damage must be made at time of delivery and addressed with the carrier for compensation.
• Kratos will not be liable for any parties that experience loss of product, consequential damage, lost business, or any other expenses.
• Defects or damage due to improper maintenance, wear and tear, abuse, misuse, vandalism, or Act of God

For Warranty Inquiries
To obtain warranty information or make a claim against this warranty, please contact the location where you purchased the product.
If purchased on www.centralrestaurant.com, call 800-215-9293 or email sales@centralrestaurant.com

References

• Central Restaurant Products: Commercial Restaurant Supplies & Equipment Store

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