Wisco Industries 721 User manual

FP140191 REV: ORIG
P.O. Box 10 • Oregon, WI 53575 • Ph: 608.835.3106 • Fx: 608.835.7399 • wiscoind.com • wiscomade.com
CONVECTION OVEN
1/2 SIZE PAN
FEATURES:
• Quick, easy 3 step bake process with 20
programmable presets
• Precise temperature and adjustable time control
• High speed fan for even air distribution
• Baking temperatures ranging from 150°F - 500°F
• Stainless steel construction
• Insulated, double wall construction
• Removable door and rack supports for easy cleaning
• 20 programmable baking presets
• Unit comes with (3) cooking racks & customized
16” x 18”aluminum baking pans. These pans
allow 25% more cookies than a standard pan per
bake cycle.
• Can accommodate (2) 16” pizzas per bake cycle
CAPACITY:
1.0 oz. cookie puck = 20 per tray
1.5 oz. cookie puck = 16 per tray
Convection is the ideal way to cook foods evenly & quickly. This is our largest convection oven
featuring a 3 step bake process with 20 programmable presets. It utilizes pans that are 50%
larger than the industry standard 1/2 sheets, allowing you to bake more in less time.
VOLTS: 120 AMPS: 12.5 WATTS: 1500
DIMENSIONS:
• Best when operated on an individual branch circuit
• 5’ NEMA 5-15P power cord
• 23½”W × 24”D × 16¼”H
• Inside Dimensions: 18¾”W × 16½”D × 10”H
• Actual Weight: 76 lbs.
MODEL 721
SHIPPING INFORMATION:
• SHIPPING DIMENSIONS: 42”D × 48”W × 25”H
• SHIPPING WEIGHT: lbs.126
* MUST SHIP LTL FREIGHT TRUCK
ELECTRICAL DATA:
ACCESSORIES:
• 00721PS3 - 3 Aluminum Baking Trays Boxed Set
• 0027258-500 - 500 Count Parchment Paper
• 0027258-1000 - 1000 Count Parchment Paper
• 0027359CR - Cooling Rack Kit
NEMA 5-15P

IMPORTANT: Read the following safety and operation instructions to avoid injury and to avoid damage to equipment or property.
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 there is extensive color
variation, reduce the thermostat setting by 15°F-25°F until the desired results are achieved. Excessive
temperatures will not reduce baking time.
TIME
Convection ovens generally bake 20% 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 require more cook time than 1 tray of food product
PRODUCTS
Load the oven from the bottom up. To ensure even baking, equal amounts of similar products should be used
on each pan.
P.O. Box 10 • Oregon, WI 53575 • Ph: 608.835.3106 • Fx: 608.835.7399 • wiscoind.com • wiscomade.com
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 on an individual branch circuit of at least 15 amps for best results. Failure to
do so may result in decreased performance of the oven.
The oven should never be operated on or near combustible materials. Caution should be taken because of
the hot surfaces attained during use.
Exterior surfaces on unit may get hot. Use caution when touching these areas to avoid injury.
Unplug oven when not in use.
INITIAL START UP
Before you use your new Wisco 721 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.
The unit may initially smoke during this process.
• Clean the oven with a mild detergent inside & out
• Set the oven’s temperature control board to 500°F
• Allow the oven to run for approximately 30 minutes
• After this cycle, you are now ready to start cooking
OPERATING INSTRUCTIONS

• General Description:
◦ The 721 Convection oven offer’s manual control of TIME and TEMPERATURE settings
◦ The TIME can be adjusted in 30 second increments
◦ The TEMPERATURE can be in 5°F increments
• Programming:
◦ Press ON/OFF
◦ To program the oven, hold PROGRAM button until a beep sounds
◦ Using arrows choose the preset you desire to program, P1, P2, P3, P4, etc. then press
◦ Adjust your TIME, then press SELECT
◦ Adjust your TEMPERATURE
◦ Once TIME and TEMPERATURE are selected, hold PROGRAM to exit out until a beep
• Baking:
◦ Choose the preset you require for baking
◦ Press START/STOP to begin PREHEAT
◦ While the oven is preheating, the PREHEAT light will flash
◦ Preheating TEMPERATURE will rise in 5°F increments
◦ Once preheated insert baking goods and press START/STOP to begin the timer
◦ You can repeat process of baking by pressing START/STOP
◦ If re-baking on same preset, PREHEAT will be skipped and continue to TIME
◦ You may increase or decrease bake time in 30 second increments during the bake cycle
P.O. Box 10 • Oregon, WI 53575 • Ph: 608.835.3106 • Fx: 608.835.7399 • wiscoind.com • wiscomade.com
OPERATING INSTRUCTIONS
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 removable for cleaning with a mild detergent, water and soft cloth.
To remove support racks, loosen the thumb screw on each side and simply pull 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.
Unplug unit from power source and allow to cool completely before performing any maintenance or
cleaning.
CLEANING INSTRUCTIONS
Unit is not waterproof. Do not submerge in water. Do not operate if unit has been submerged in water.
sounds verifying program exit mode
SELECT
◦ Presets will remain in memory even if the oven is unplugged

P.O. Box 10 • Oregon, WI 53575 • Ph: 608.835.3106 • Fx: 608.835.8273 • wiscoind.com • wiscomade.comP.O. Box 10 • Oregon, WI 53575 • Ph: 608.835.3106 • Fx: 608.835.8273 • wiscoind.com • wiscomade.comP.O. Box 10 • Oregon, WI 53575 • Ph: 608.835.3106 • Fx: 608.835.8273 • wiscoind.com • wiscomade.com
P.O. Box 10 • Oregon, WI 53575 • Ph: 608.835.3106 • Fx: 608.835.7399 • wiscoind.com • wiscomade.com
PARTS LIST:
MODEL 721
ITEM # PART # DESCRIPTION
1 0027079 RACK
2 0027072L INTERNAL SUPPORT RACK (LEFT)
3 0027072R INTERNAL SUPPORT RACK (RIGHT)
4 0022691 INTERNAL SUPPORT RACK SCREW
5 0027061 COOKIE PAN
6 0027064-001SK DOOR ASSEMBLY SERVICE KIT
7 0027068-001SK CONTROL PANEL ASSEMBLY SERVICE KIT
8 0027081 DOOR GASKET
90027267SK BOTTOM FOOT SERVICE KIT
10 0027184SK HEATING ELEMENT SERVICE KIT
11 0027192 HI-LIMIT THERMOSTAT
0027391 TEMPERATURE SENSOR
13
12
0027185SK BLOWER WHEEL SERVICE KIT
14 0027052SK BLOWER MOTOR SERVICE KIT (INCLUDES MOTOR & CAPACITOR)
16 0027378 POWER CORD
*
*
*
*
15 008248 STRAIN RELIEF
0027258-500 500 COUNT PARCHMENT PAPER
0027258-1000 1000 COUNT BOXED PARCHMENT PAPER
0027359CR COOLING RACK
00721PS3 3 COOKIE PANS BOXED SET

1
5
3
4
6
7
8
9
10
11
12
13
14
15
2
16
Model 721 Exploded View
Rev. Date.: 12/01/2017

Model 721 Wiring Diagram
Rev. Date: 06/21/2017
Blue
White
Black
16
11
14
12
10
7

MODEL 721: Troubleshooting
Unplug unit. Does unit
beeper sound when plugged
into power receptacle?
No
Check outlet voltage. Does
your meter read between
115-130VAC?
No
Call a service
technican
Yes
Check wire connections to
Power Board; may be loose,
or broken. Possibly replace
Power Board.
Yes
Does unit display illuminate
when "ON/OFF" button is
touched?
No
Try using your thumb to touch
the "ON/OFF" button or touch
around button edges. Work?
No Replace Control Board
Yes
Do any error codes
display? E1 or E2
Yes
Yes
E1=Open circuit or
temp sensor.
Replace.
E2=Shorted temp
sensor. Replace.
Does motor hum, spin slowly or take awhile to get up to operating speed when the heating cycle is started?
No
Check Capacitor
connections and/or
replace Capacitor
Yes No
Does motor
operate normally?
Does the heating
element work?
No
Is there continuity
between the heating
element leads?
Yes/No
No
Replace heating element
Yes
Is there continuity between the white
& blue motor wires?
Motor thermal
protector may be
tripped. Let cool for 30
mins. Work?
No
No
Replace motor
Yes
Yes
Is there continuity
between the HI-LIMIT
thermostat leads?
Yes
Replace Power Board
No
Replace HI-LIMIT
thermostat