Wisco 620 Installation Manual

1/4 SIZE PANS - CONVECTION OVEN

MODEL 620

Convection is the ideal way to cook convenience foods and this compact oven can bake it all.
Heated, circulating air throughout the oven penetrates food quickly. Perfect for everything from
cookies, muffins and biscuits to frozen snacks and hors d’oevres.

FEATURES:

- Precise, adjustable time and temperature control

- High speed fan for even air distribution

- Temperatures ranging from 100 F - 450 F

- Stainless steel construction

- Insulated, double wall construction

- Cool touch safety (tempered) glass door

- Removable door and rack slides for easy cleaning

- Unit comes with (3) wire racks and

(3) 13-1/2” x 10” aluminum baking trays

- Able to accommodate (3) standard 1/4 size sheet pans

(Not Inclu de d)

A VAILABLE ACCESSORIES:

#0022840CR Cooling Rack (pictured at right)
#00620PS3 Boxed set of (3) aluminum baking trays
#0022693 (500) sheets Parchment Paper
#0022694 (1000) sheets Parchment Paper

ELECTRICAL DATA:

- 120 volts, 10.9 amps, 1300 watts

- Best when operated on an individual branch circuit

- 53” power cord length

DIMENSIONS:

14-1/4”H x 19”W x 1 8”D
Inside dimension: 8-5/8”H x 14”W x 11”D

SHIPPING DIMENSIONS: 25”L x 23”W x 18”H
SHIPPING WEIGHT: 47 lbs.

FP140143-M
01/14

P.O. BOX #10
OREGON, WI 53575
PHONE: [phone]
FAX: [phone]
www .wiscoind.com

LIMITED WARRANTY:

Wisco Industries, Inc. expressly warrants the product will be free from defects in workmanship and materials for a period of
1 year from the date of shipment. WISCO DISCLAIMS AND EXCLUDES ANY AND ALL OTHER EXPRESS OR IMPLIED
WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY AND ALL WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR PURPOSE.

Buyer agrees that its SOLE AND EXCLUSIVE REMEDY against Wisco and Wisco’s SOLE AND EXCLUSIVE LIABILITY arising
out of any defect or nonconformity in the product shall be replacement/exchange of such nonconforming countertop food service
equipment at Wisco’s expense. No countertop food service equipment shall be returned without Wisco’s consent. IT IS AGREED
THAT WISCO’S MAXIMUM LIABILITY SHALL NOT IN ANY CASE EXCEED THE SALE PRICE FOR THE COUNTERTOP
EQUIPMENT CLAIMED TO BE DEFECTIVE OR NONCONFORMING.

IMPORTANT: Read the following safety and operation instructions to avoid injury and to avoid
damage to equipment or property.

Plug unit into a properly grounded electrical outlet of the correct voltage, size and plug configuration for this unit. We recommend usage

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on an individual branch circuit of at least 15 amps for best results. Failure to do so may result in decreased performance of the warmer.

Unplug unit from power source and allow to cool completely before performing any maintenance or cleaning.

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Unit is not waterproof. Do Not submerge in water. Do not operate if unit has been submerged in water.

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Exterior surfaces on unit may get hot. Use caution when touching these areas to avoid injury.

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Initial Start Up:

Before you use your new Wisco 620 Convection Oven you will want to follow the steps listed below
in order to get rid of any oil, film, etc. that may still be on the oven from the manufacturing process:
(unit may initially smoke during this process)

- Clean the oven with a mild detergent inside & out

- Turn the oven’s temperature control dial to 400 F

- Set the timer for approx. 30 min.

- After this cycle you are now ready to start cooking.

CLEANING INSTRUCTIONS:

Do not steam clean or use excessive water on unit to avoid personal injury or electrical shock.

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Unplug unit from power source and allow to cool completely before performing any maintenance or cleaning.

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Unit is not waterproof. Do Not submerge in water. Do not operate if unit has been submerged in water.

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The inside of the oven can be cleaned with a mild detergent, water and a soft cloth.
Do not use acids or caustic products such as foaming oven cleaners.

Pans, racks and support racks are easily removed for cleaning with a mild detergent, water and soft
cloth. To remove support racks, simply loosen the thumb nuts at the front of the machine and pull
supports straight out.

The outside of the oven can be cleaned with a mild detergent, water and soft cloth.
You may also use a stainless steel cleaner.

AVOID USING ABRASIVE/SCOURING PADS AS SOME MAY CAUSE SCRATCH MARKS ON
YOUR UNIT.

OPERATION:

PREHEAT

Preheat the oven 30 F - 50 F higher than the temperature you will be cooking at. Once you
have loaded the food product into the oven and closed the oven door turn the temperature back
to the required cooking temperature.

TEMPERATURE

Most products require lower temperatures than suggested for deck or range ovens. A standard
temperature reduction of 25 F - 30 F is recommended as a starting point, actual baking will vary pending
product weight and consistency. If the edges of the product are done and the center is still raw,
or if there is extensive color variation, reduce the thermostat setting by 15-25 F until the desired
results are achieved. Excessive temperatures will not reduce baking time.

TIME

Convection ovens generally bake 20% (or more) faster than deck or range ovens even though lower
temperatures are used. Most recipes can be converted by having shorter cooking times and/or
reducing your cooking temperatures.

- Frozen food products will require more time than refrigerated products

- 3 trays of food product will take more cook time than 1 tray of food

PRODUCT

Load the oven from the bottom up. To ensure even baking, equal amounts of product should be used.
Different amounts of product in different pans can cause uneven baking.
*We suggest a clearance of 1-3 inches between pans when cooking for proper air circulation and
best results.

TROUBLESHOOTING:

Unplug unit from power source and allow to cool completely before performing any maintenance or cleaning.

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Unit smoking on first usage:

- See Initial Start Up on page 2

Unit not working:

- Check timer, power cord and/or electrical circuit.

- Hit the reset button; this is the RED button located along the edge of the back of the unit.

Oven shuts down when you are operating at high temperatures:
This oven comes equipped with an automatic high temperature limiting thermostat designed to
protect the oven from overheating and/or power fluctuations.
Follow these steps to reset the high temperature limiting thermostat and resume safe operation:

1. Press the reset button to the “in” position. This button is found at the rear of the oven next to the
power cord.

2. Begin food preparation after the oven is preheated.

- If the thermal breaker shuts your unit down, be sure to check your entire circuit before turning the
oven back on to verify that the total amps being drawn by all the appliances on that circuit have not
exceeded the amount of amps available.

- A faulty regulating thermostat may be the cause if the hi-limit thermostat keeps tripping.