TurboChef HHB 2 Service Manual

turbochef technologies, inc.

HHB2 Rev B Service Manual Changes

August 2010

Changed all “press and hold” key strokes to 2 seconds

Updated F7 troubleshooting

Updated “Cook Door Open When Door is Closed” troubleshooting

Updated “Food Not Cooking Properly” troubleshooting

Where applicable, updated drawings to match DOC-1267 parts catalog

Where applicable, updated part numbers and descriptions to match DOC-1267 parts catalog

Added hinge detail drawings

Added miscellaneous components drawing (covers, legs)

© 2010 TurboChef Technologies, Inc.

TM

Service Manual

for the turbochef high h batch 2TM rapid cook oven

©2009–2010 TurboChef Technologies, Inc.

For further information call:

Customer Service at 800.90turbo Sales & Marketing at 866.90turbo

TM

The information contained in this manual is important for the proper installation, use, maintenance, and repair of this oven. Follow these procedures and instructions to ensure satisfactory baking results and years of trouble-free service.

Errors – descriptive, typographic, or pictorial – are subject to correction. Specifications are subject to change without notice.

PLEASE CAREFULLY READ THIS MANUAL AND RETAIN IT FOR FUTURE REFERENCE.

Table of Contents

Safety Instructions

General Safety Information	i
Reducing Fire Risk	i
Preventing Oven Damage	ii
Grounding Instructions	ii
Power Cord Replacement	ii

Specifications and Installation

Theory of Operation	1
Certifications	1
Dimensions	1
Construction	2
Exterior	2
Interior	2
Electrical Specifications	2
United States	2
Canada	2
Latin America	2
Europe/Asia/Pacific	2
United Kingdom/Ireland	2
Standard Features	3
Performance	3
Installation	3
Packaging	3
Damaged Shipment Claims	3
Lifting and Placing the Oven	3
Securing Oven to Cart	4
Double Stacking Ovens	4
Built-In Installation	4
Installation Near Open Heat Source	6
Setup	6
Ventilation Requirements	6
Optional Installation Items	7
Oven Restraint Kit	7
Oven Cart	7
Replacing/Exchanging Jetplates	8

Oven Maintenance

Daily Cleaning	9
Deep Cleaning	10

Operating the Oven

Control Display and Key Identification	13
Cooking Instructions	14
Additional Cooking Options	15
Time Screen	15
Done Screen	15
Options Menu	15
Enabling/Disabling the Edit Menu	16
Erasing the Recipe Menu	16
Enabling/Disabling the Write Card Function	17
Enabling/Disabling the Time Screen	17
Enabling/Disabling the Done Screen	18
Demonstration Mode	18
Programming Recipes	19
Adjusting the Cook Cavity Temperature	19
Modifying Recipes	19
Ordering a Smart Card	21
Loading Menu from Smart Card	21
Saving Menu to Smart Card	21
Checking Recipe Counter	21

Diagnosing an Issue

Fault Codes: Descriptions, Clearing Instructions, and Troubleshooting	23
F1: BLOWER (Blower Running Status Bad)	23
F2: LOW TEMP (Cook Temperature Low)	23
F6: EC TEMP (Electrical Compartment Temperature High)	24
F7: THERMO (Thermocouple Open)	24
F8: HEAT LOW	24
Status Indicators	25
Door	25
Heater A	25
Heater B	25
Blower	25
Testing Options	25
Diagnosing Door Switch Operation	26
Testing the Blower Motor	26
Viewing/Clearing the Fault Log	26
Adjusting the Temperature Offset	26
Checking Heaters A and B	26
Testing the Rack Oscillator Motor	26
Enabling/Disabling Diagnostic Mode	26
Viewing Cook Counter/Time	26
Viewing the Cumulative Operating Time	27
Viewing the Electrical Compartment Temperature	27
Setting Fahrenheit/Celsius	27
Viewing/Editing the Serial Number	27

Fault Code Troubleshooting	28
F1: BLOWER (Blower Running Status Bad)	28
F2: LOW TEMP (Cook Temperature Low)	29
F6: EC TEMP (Electrical Compartment Temperature High)	30
F7: THERMO (Thermocouple Open)	30
F8: HEAT LOW	31
Non-Fault Code Troubleshooting	32
No Keypad Input	32
“Cook Door Open” Message when Door is Closed	32
No Display – Screen is Blank	33
Food Not Cooking Properly	34
“Read Fail” Message When Loading Menu	35
“Write Fail” Message When Loading Menu	35

The Control System

Components	37
Control Board	37
Cooling Fans	37
Display	37
EMI Filter	37
Fuses	37
Keypad	37
Power Cord	37
Power Supply	37
Relay - Rack Oscillation Motor	37
Smart Card Reader	37
Solid State Relay (SSR)	38
Thermocouple – Cook Cavity	38
Thermocouple – Electrical Compartment (EC)	38
Thermostat – Cooling Fan	38
Thermostat – High-Limit	38
Voltage Sensor	38
Wire Harness	38

The Convection System

Components	41
Blower Motor	41
Blower Motor Speed Controller	41
Heaters	41
Jetplates	41
Jetplate Support Rails	41
Oven Rack	41
Rack Oscillation Motor	41
Swing Arm Assembly	41
Convection System Troubleshooting	41

The Oven Door

Components	45
Door Gasket	45
Door Handle	45
Door Hinges	45
Door Skin	45
Door Interlock Switch	45
Removing/Reinstalling the Oven Door	45

The Filtering System/Miscellaneous Components

Filtering System Components	47
Grease Filter	47
Grease Filter Frame	47
Catalytic Converter	47
Miscellaneous Components	48

Schematics

High h Batch 2 Schematic	49
Control Board and Test Point Locations	52

IMPORTANT SAFETY INSTRUCTIONS

WARNING: When operating this oven, strictly adhere to all safety precautions below, on page ii, and throughout this manual to reduce the risk of burns, electric shock, fire, injury, oven damage, or property damage. Improper installation, adjustment, alteration, service, or maintenance of this equipment can cause property damage, injury, or death. Thoroughly read the installation, operating, and maintenance instructions before installing or servicing this equipment.

General Safety Information

£Use this appliance only for its intended uses as described in this manual.

£Only qualified service personnel should service this appliance. Contact the nearest authorized service facility for examination, repair, or adjustment.

£Always ensure the oven is disconnected from the power supply before servicing, repairing, or adjusting any components or parts.

£This appliance must be grounded. Connect only to properly grounded outlet. See “Grounding Instructions” found on page ii.

£Install or locate this appliance only in accordance with the provided installation instructions.

TDo not place the cord near heated surfaces.

TDo not store or use flammable vapors or liquids (e.g., gasoline) in the vicinity of this appliance.

TDo not allow children to use this appliance.

TDo not place corrosive chemicals or vapors in this appliance. It is not designed for industrial or laboratory use.

TDo not operate this appliance if it

-Has a damaged cord or plug

-Is not working properly

-Has been damaged or dropped

TDo not cover or block any openings on this appliance.

TDo not store this appliance outdoors.

TDo not use this appliance near water.

TDo not immerse this appliance or any of its components (e.g., cord, plug, etc.) in water.

TDo not let the cord hang over the edge of a table or counter.

TThis appliance is not to be used by children or persons with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction.

Reducing Fire Risk

If materials inside the oven ignite or if smoke is observed:

1.Keep the oven door closed.

2.Turn off the oven.

3.Disconnect the power cord or shut off power at the fuse/circuit breaker panel.

£ Carefully monitor the oven if paper, plastic, or other combustible materials are placed inside to facilitate cooking.

TDo not leave items in the cook cavity when the oven is not in use.

TDo not cook items wrapped in cling wrap or plastic film.

i

INSTRUCTIONS SAFETY

T Do not overcook food.

ii SAFETY INSTRUCTIONS

Preventing Oven Damage

£Clean the oven daily (page 9). Failure to do so will adversely affect cooking performance and shorten the life of the oven.

£Once per month or more frequently depending on use, perform the deep cleaning procedure (pages 10-11). Failure to do so will adversely affect cooking performance and shorten the life of the oven.

£Clean the oven only with TurboChef Oven Cleaner.

£Operate the oven only when food is in the cook chamber.

TDo not clean with a water jet.

TDo not slam or mishandle the oven door.

TDo not frequently open and close the door to check the cook status of the food.

TDo not allow cleaning solution or water to remain in the cook chamber after cleaning or at

any other time.

£When servicing this appliance, do not tear insulation to get to components. Rather, find the edge of the insulation and remove the tape that holds it in place.

Grounding Instructions

Warning: Improper grounding increases the risk of electric shock.

This appliance must be grounded. It is equipped with a cord that has a grounding wire and plug, which in the event of an electrical short circuit reduces the risk of electric shock by providing an escape wire for the electric current. The wire must be plugged into an outlet that is properly installed and grounded. Consult a qualified electrician or serviceman for more information on grounding instructions or to determine if the appliance is properly grounded.

TDo not use an extension cord. If the power supply cord is too short, ask a qualified electrician or serviceman to install an outlet near the appliance.

Power Cord Replacement

To avoid potential hazards, only the manufacturer, an authorized service agent, or a similarly-qualified person should replace a damaged power cord.

Specifications and Installation

Theory of Operation

The TurboChef ® High h Batch 2TM oven generates high heat transfer rates to rapidly cook food by recirculating impinged air at speeds of up to 60 mph. The technology includes utilizing a variable speed blower, oscillating rack, and catalytic converter, resulting in minimal energy input, high food quality, and UL®-certified ventless operation.

Certifications

UL, cUL, NSF, TÜV, CE

UL 710B (KNLZ) listed for ventless operation. See page 6 for details and limitations.

Dimensions

Single Units
Height	17.4”	(442 mm)
with legs*	21.4”	(544 mm)
without legs	17.4”	(442 mm)
Width	25.9”	(658 mm)
Depth	29.2”	(742 mm)
with handle	31.7”	(805 mm)
Weight	157 lb.	(71 kg)
Double Units (Requires a Stacking Kit)
Height
top w/ legs	42.8”	(1087 mm)
top w/out legs	38.8”	(986 mm)
Width	25.9”	(658 mm)
Depth	29.2”	(742 mm)
with handle	31.7”	(805 mm)
Weight	314 lb.	(142 kg)
* Legs are 4” (102 mm)
Cook Cavity
Height	8”	(203 mm)
Width	18.75”	(476 mm)
Depth	16.75”	(425 mm)
Volume	1.45 cu. ft. (41.1 liters)
Wall Clearance
Top	2”	(51 mm)
Sides	2”	(51 mm)

25.9 in. (658 mm)

	in. (986 mm)
	38.8	31.7 in. (805 mm)
		29.2 in. (742 mm)
	(544 mm)	in. (442 mm)
	21.4 in.	17.4

10 in. (254 mm)

Figure 1: High h Batch 2 Dimensions

1

INSTALLATION AND SPECIFICATIONS

2 SPECIFICATIONS AND INSTALLATION

Construction

Exterior

£Stainless steel front, top, back, and powdercoated sides

£4” (102 mm) matte black legs

£Ergonomic, cool to touch powder-coated door handle

Interior

£304 stainless steel interior

£Water-tight construction

£Interchangeable jetplates for customized cooking results

Electrical Specifications

United States

£	HHB2 (P/N: HHB-8603-1)
	Phase	1
	Voltage*	208/240 VAC
	Frequency	50/60 Hz
	Current	24 amps
	Max Circuit	30 amps
	Max Input	5000 watts
	Cord	10 gauge, 3 wire, 6 foot, SOOW
	Plug	NEMA 6-30P
Canada
£	HHB2C (P/N: HHB-8603-1C)
	Phase	1
	Voltage*	208/240 VAC
	Frequency	50/60 Hz
	Current	24 amps
	Max Circuit	50 amps
	Max Input	5000 watts
	Cord	10 gauge, 3 wire, 6 foot, SOOW
	Plug	NEMA 6-50P

*Smart Voltage Sensor Technology automatically senses the supply voltage and prompts the operator to configure the oven to the correct setting (208 or 240). However, it does not compensate for lack-of or over-voltage situations.

Latin America

£	HHB2LA (P/N: HHB-8603-1K-2073)
	Phase	1
	Voltage	230 VAC
	Frequency	50/60 Hz
	Current	24 amps
	Max Circuit	32 amps
	Max Input	5000 watts
	Cord	10 gauge, 3 wire, 5 foot, SOOW
	Plug	NEMA 6-30P
Europe/Asia/Pacific
£	HHB2EW (P/N: HHB-8603-1W)
	Phase	3
	Voltage	400 VAC
	Frequency	50/60 Hz
	Current	10 amps
	Max Circuit	16 amps
	Max Input	5000 watts
	Cord	HO7RN-F, 5 wire
	Plug	IEC 309, 5-pin, 16 amp
£	HHB2ED (P/N: HHB-8603-1D)
	Phase	3
	Voltage	230 VAC
	Frequency	50/60 Hz
	Current	14 amps
	Max Circuit	20 amps
	Max Input	5000 watts
	Cord	HO7RN-F, 4 wire
	Plug	IEC 309, 4-pin, 32 amp
United Kingdom/Ireland
£	HHB2UK (P/N: HHB-8603-1K)
	Phase	1
	Voltage	230 VAC
	Frequency	50/60 Hz
	Current	24 amps
	Max Circuit	32 amps
	Max Input	5000 watts
	Cord	HO7RN-F, 3 wire
	Plug	IEC 309, 3-pin, 32 amp

NOTE: The owner is responsible for supplying voltage that meets the above specifications. For more information, consult a qualified electrician.

Standard Features

£Integral recirculating catalytic converter for UL listed ventless operation (UL KNLZ)

£Top and bottom jetplates removable for cleaning

£Variable-speed High h recirculating impingement airflow system

£Oscillating rack for high heat transfer without spotting

£Half-sheet pan/16-inch pizza capacity

£Smart Voltage Sensor Technology* (U.S. only)

£Stackable design (requires stacking kit)

£Smart menu system capable of storing up to 72 recipes

£Built-in self diagnostics for monitoring oven components and performance

£Includes plug and cord (5 ft.)

£Warranty - 1 year parts and labor

Performance

£Heat transfer rates (h) are 3X–4X typical convection oven

£Heat transfer rates (h) are 2X typical conveyor oven

Installation

Install or locate this appliance only in accordance with the instructions provided below and on pages 4-8. In no event shall the manufacturer assume any liability for damages or injuries resulting from

installations which are not in compliance with these instructions and the safety instructions listed on pages i and ii.

Packaging

All ovens are packaged in a double-wall corrugated box with integrated skids. If the oven may possibly be shipped from its original place of installation for any reason, TurboChef recommends retaining the packaging in good condition.

Damaged Shipment Claims

Upon delivery, remove the oven from its packaging and immediately note any damage. To file a claim, contact the shipping company within 24 hours of receiving the shipment. TurboChef is not responsible if a product is damaged during shipment.

Lifting and Placing the Oven

Warning: Oven weight is approximately 157 lb. (71 kg). Two or more persons are required to lift it.

Warning: To prevent personal injury or damage to the oven, do not lift the oven

from the front and rear or by the handle.

Warning: Ensure the oven is properly placed on the table or countertop at all times. TurboChef will not recognize a fallen oven as a warrantable claim and is not liable for any injuries that may result.

When lifting and placing the oven:

1.Position one or more persons on the left and right sides of the oven.

2.Lift from the bottom of the oven.

3.Place the oven on surface at least 30” (762 mm) deep and capable of supporting 167 lb. (76 kg).

3

INSTALLATION AND SPECIFICATIONS

4 SPECIFICATIONS AND INSTALLATION

Securing Oven to Cart

Reference Figure 3, adjacent.

1.Lock the oven cart wheels.

2.Place the oven on the cart.

WARNING: Do not attempt to lift the oven with fewer than 2 people.

WARNING: When lifting the oven, position at least one person on each side. Do not lift the oven from the front and back, and do not use the handle to lift the oven.

WARNING: Do not transport ovens on cart when stacked.

4.Attach one oven cart bracket to each leg (kit HHB-8206 includes four brackets).

5.Secure each leg by aligning the bracket with the holes on the oven cart and attaching the parts listed in Figure 3.

Double Stacking Ovens

1.Ensure the surface that will hold the stacked ovens can support the weight (314 lb./142 kg).

2.Allow each oven time to cool and then unplug.

3.If stacking ovens on an oven cart, make sure the bottom oven is bolted to the cart and the wheels are locked (Figure 3).

4.Attach the stacking bracket to the back of the bottom oven using the existing oven screws as shown in Figure 4.

5.Remove the screws from the top oven, as shown in Figure 4.

6.If desired, remove the legs from the top oven.

NOTE: Ovens can be stacked either with legs attached or removed from the top oven.

7. Place the top oven on the bottom oven.

WARNING: Do not attempt to lift the oven with fewer than two people.

WARNING: When lifting the oven, position at least one person on each side. Do not lift the oven from the front and back, and do not use the handle to lift the oven.

8.Align the holes on the stacking bracket with the holes on the top oven and reinstall the screws.

WARNING: Do not stack ovens more than two-high.

Built-In Installation

TurboChef ovens are designed to be installed on a countertop or table. They are not intended for built-in or enclosed installation.

“Built-in or enclosed installation” is defined as installing an oven in any structure that surrounds the oven by five sides (top/rear/base/side panels).

If installation must be “built in,” the operator must ensure the following (see Figure 2):

oAt least 300 cfm (8.5 cmm) of supplement flow within the cabinet.

oAt least 2” (51 mm) clearance to every surface.

The operator will be responsible for compensating any extra time required to service the product due to removing the product for serviceability.

	2.0" (51mm)
2.0" (51mm)	2.0" (51mm)

2.0" (51mm)

Unobstructed

Airflow

Fan

300 CFM (8.5 CMM)

Discharge to Ambient

4.0" (102 mm)

Unobstructed

Airflow

Notes:

1: Must be included by contractor

Figure 2: Built-in Installation

Bolt

Flat Washer

Bracket

Flat Washer

Split-Lock Washer

Nut

Figure 3: HhB 2 Oven Secured to TurboChef Oven Cart

Figure 4: Stacked HhB 2 Ovens (Two Configurations)

5

INSTALLATION AND SPECIFICATIONS

6 SPECIFICATIONS AND INSTALLATION

PARTITION	COUNTER TOP / TABLE
21.4” (544 mm)	PARTITION
ABOVE COUNTER TOP	21.4” (544 mm)
	ABOVE COUNTER TOP

GRILL	TURBOCHEF
	OVEN
			DEEP FRYER

6” (152 mm) MINIMUM

Figure 5: Installation Near Open Heat Source

12” (305 mm) MINIMUM

Installation Near Open Heat Source

When placing a TurboChef oven near an open heat source, strictly adhere to the following (Figure 5):

£Verify oven location has a minimum 6” (152

mm)clearance on top and minimum 2” (51

mm)of clearance on each side.

£If the oven is being placed near a grill or stove, there must be a divider between the oven and the open heat source, with a minimum of 6” (152 mm) between the oven and the divider.

£If the oven is being placed near a fryer, there must be a divider between the oven and fryer, with a minimum of 12” (305 mm) between the oven and the divider.

£The height of the divider must be greater than or equal to the height of the oven (21.4”/544

mm).

Setup

Once the oven is properly positioned on the counter:

1.Remove packing material from the cook cavity.

2.Install the oven rack by placing it over the support pins.

3.Plug the oven into a wall-mounted electrical receptacle. (See Electrical Specifications, page 2.)

4.The oven has been preprogrammed with factory settings and is ready to operate out of the box.

Ventilation Requirements

The TurboChef model HhB/HhB 2 oven has been approved by Underwriter’s Laboratory for ventless operation (UL 710B, KNLZ listing) for all food items except for foods classified as “fatty raw proteins.” Such foods include bone-in, skin-on chicken, raw hamburger meat, raw bacon, raw sausage, steaks, etc. If cooking these types of foods, consult local HVAC codes and authorities to ensure compliance with ventilation requirements.

Optional Installation Items

Oven Restraint Kit (P/N: TC3-0242 KIT)

The oven restraint kit is an optional device that prevents the oven from moving forward during use and cleaning. It will not prevent the oven from falling off a countertop if the oven is pulled off or the legs are allowed to slide off the edge. Call 1-800-90TURBO or your Authorized Distributor for more information.

Oven Cart

Construction

£Available heights: 18” (457 mm) or 24” (610 mm)

£304 stainless steel

£14-gauge 304 stainless steel top

£16-gauge 304 solid stainless steel shelf

£Four 6” (152 mm) high polyurethane tired casters, front two with safety locking brakes; bolt-on to stainless steel leg

Standard Features

£Reinforcement: Welded gusset plates between legs and top to ensure rigidity/eliminate stand racking

£Frame: Fully welded 1.5” x 1.5” (38 mm x 38 mm) square stainless steel tube

£Easy to assemble

Call 1-800-90TURBO or your Authorized Distributor for more information.

18" (457 mm) Oven Cart Dimensions
Height	18"	(457 mm)
with single oven	39.4"	(1001 mm)
with stacked ovens*
top unit without legs	56.8"	(1443 mm)
top unit with legs	60.8"	(1544 mm)
Width	27.8"	(706 mm)
with single oven	27.8"	(706 mm)
with stacked ovens*	27.8"	(706 mm)
Depth	26.625"	(676 mm)
with single oven	31.7"	(805 mm)
with stacked ovens*	31.7"	(805 mm)
24" (610 mm) Oven Cart Dimensions
Height	24"	(610 mm)
with single oven	45.4"	(1153 mm)
with stacked ovens*
top unit without legs	62.8"	(1595 mm)
top unit with legs	66.8"	(1697 mm)
Width	27.8"	(706 mm)
with single oven	27.8"	(706 mm)
with stacked ovens*	27.8"	(706 mm)
Depth	26.625"	(676 mm)
with single oven	31.7"	(805 mm)
with stacked ovens*	31.7"	(805 mm)

*Requires Stacking Bracket.

Assembly instructions are included with the cart. If additional help is needed, call 1-800-90TURBO or your Authorized Distributor.

NOTE: If using 18” (457 mm) cart, subtract 6” (152 mm) from all measurements.

Figure 6: 24” (610 mm) Oven Cart with Oven(s)

7

INSTALLATION AND SPECIFICATIONS

8 SPECIFICATIONS AND INSTALLATION

Replacing/Exchanging Jetplates

Reference Figure 7. The top and bottom jetplates ensure hot air is distributed evenly to maximize food quality. For product-specific results, jetplates with different hole patterns can be installed.

To remove the bottom jetplate:

1.Ensure the oven is off and the cook cavity temperature is below 150°F (66°C).

2.Remove the oven rack.

3.Remove both lower support rails.

4.Remove the lower jetplate.

To remove the top jetplate:

1.Ensure the oven is off and the cook cavity temperature is below 150°F (66°C).

2.Remove the oven rack.

3.Remove the filter bracket.

4.Remove both upper support rails.

5.If additional clearance is required, remove the air diverter from the rear oven wall using a Phillips screwdriver.

6.Remove the top jetplate.

Bottom Support Rail (Left)

Top Jetplate

Bottom Jetplate

Top Support Rail (x2)

Rack	Bottom Support Rail (Right)

Figure 7: Removing Jetplate

Oven Maintenance

9

The daily and deep cleaning procedures below will help maintain the High h Batch 2 oven. Be sure to use only TurboChef Oven Cleaner; any other cleaner can damage and void the warranty on critical parts. To order TurboChef Oven Cleaner, Oven Guard, or a new filter, call 1-800-90TURBO, [phone], or your Authorized Distributor.

1			Supplies and Equipment: TurboChef Oven Cleaner (P/N: 103180), Oven Guard
			(P/N: 103181), nylon scrub pad, cleaning towel, soft-bristle cleaning brush,
			Phillips screwdriver (only if required for top jetplate removal)
			Step 1: Prepare the Oven
		£		Ensure the oven is turned off – press the On/Off key.
2			£	DO NOT attempt to clean the oven until the display reads “Ready to Clean.”
				Warning: Injury can occur if the oven is not allowed to cool properly
				before cleaning.
			Step 2: Remove the Oven Rack
			£ Wash, rinse, sanitize, and dry the oven rack.
3

Step 3: Clean the Grease Filter

£Grasp the filter latch and lift and pull out until the filter and bracket lie flat (Figure 3).

£Remove the filter from the bracket and gently rinse it.

4

CAUTION: DO NOT scrub the filter or use a water jet when cleaning.

	£	If required, replace the filter (HHB-8287) if it has large holes or is becoming
		detached from the frame.
	Step 4: Clean the Oven Door and Cook Chamber
5
	£	Using a damp towel, remove food particles.

£ For stubborn stains, spray Oven Cleaner and allow it to penetrate for 5 minutes. £ Scrub with a nylon scrub pad.

£ Wipe the oven door and cook chamber with a clean damp towel. £ Using a clean dry towel, thoroughly dry the cook chamber.

6

Step 5: Reinstall the Grease Filter and Oven Rack

Step 6: Apply Oven Guard

£ Follow instructions on bottle.

Step 7: Wipe the Oven Exterior with a Clean Damp Towel

7

CAUTION: DO NOT spray chemicals into any openings, such as the louvers on the side panels or the cooling fans on the back of the oven. Doing so can damage critical oven components, resulting in a nonwarranty service call.

MAINTENANCE OVEN

10 OVEN MAINTENANCE

1 Deep Cleaning

TurboChef recommends deep-cleaning once per month, or more frequently depending on oven use.

Step 1: Prepare the Oven

2£ Ensure the oven is turned off – press the On/Off key.

£DO NOT attempt to clean the oven until the display reads “Ready to Clean.”

3

4a

4b

Warning: Possible injury can occur if the oven is not allowed to cool properly before cleaning.

Step 2: Remove the Oven Rack

£ Wash, rinse, sanitize, and dry the oven rack.

Step 3: Clean the Oven Door

£Using a damp towel, remove food particles.

£For stubborn stains, spray Oven Cleaner and allow it to penetrate for five minutes.

£Scrub with a nylon scrub pad.

£Wipe the oven door with a clean damp towel.

Step 4: Remove the Bottom Jetplate

£Remove the left and right support rails by gently pulling the rail out, then toward the middle of the oven (Figure 4a), and then out again.

£Remove the bottom jetplate by gripping the thumb screw and lifting up and out (Figure 4b).

£Wash, rinse, sanitize, and dry the bottom jetplate and both support rails.

5a

5b

Step 5: Remove the Grease Filter and Bracket

£Grasp the filter latch and lift and pull out until the filter and bracket lie flat (Figure 5a).

£Lift the right side of the filter bracket until you are able to remove it (Figure 5b).

£Remove the filter from the bracket and gently rinse it.

CAUTION: DO NOT scrub the filter or use a water jet when cleaning.

£Wash, rinse, sanitize, and dry the filter bracket.

£Insert the filter back into the bracket. If required, replace the filter (HHB-8287) if it has large holes or is becoming detached from the frame.

Continued on page 11.