Cascade TEK TFO-28 User manual

FORCED AIR OVENS TFO-28 TFO-10
Installation and Operation Manual

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These ovens require permanent connect wiring (also known as hardwiring) to a power supply.
Depicted on front cover: TFO-28 (left) and TFO-10 (right)
Warning:This product contains chemicals, including triglycidyl isocyanurate, known to the State of
California to cause cancer as well as birth defects or other reproductive harm. For more information,
go to www.P65Warnings.ca.gov.
¡Advertencia! Este producto contiene sustancias químicas, incluido el triglicidil isocianurato, que el
estado de California sabe que causa cáncer, así como defectos de nacimiento u otros daños
reproductivos. Para obtener más información, visite www.P65Warnings.ca.gov.
Avertissement!Ce produit peut vous exposer à des produits chimiques, dont l'isocyanurate de
triglycidyle, reconnu par l'État de Californie pour provoquer le cancer, des anomalies congénitales
ou d'autres problèmes de reproduction. Pour plus d'informations, visitez le site
www.P65Warnings.ca.gov.

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TFO-10 TFO-28 Forced Air Ovens 220 – 240 Voltage
Part number (Manual): 4861689
Revision: February 28, 2020
Cascade TEK Part ID Numbers:
Model TFO-10 TFO-28
Part ID CTF1022-H CTF2822-H
The Part ID denotes the specific build type of the model.
This oven is manufactured for Cascade TEK by Sheldon Manufacturing,
INC, an ISO-certified manufacturer.
Safety Certifications
These units are CUE listed by TÜV SÜD as forced air ovens for professional, industrial, or
educational use where the preparation or testing of materials is done at an ambient air pressure
range of 22.14 – 31.3 inHg (75 – 106 kPa) and no flammable, volatile, or combustible materials are
being heated.
The units have been tested to the following requirements:
CAN/CSA-22.2 No. 61010-1:2012
CAN/CSA-C22.2 No. 61010-2-010:2015
UL 61010-1:2012
UL 61010-2-010:2015
EN 61010-1:2010
EN 61010-2-010:2014

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TABLE OF CONTENTS
INTRODUCTION .................................................................................................................................................5
Read this Manual....................................................................................................................................................................5
Safety Considerations and Requirements ......................................................................................................................5
Contacting Assistance ..........................................................................................................................................................6
Manufacturing Warranty ......................................................................................................................................................6
Engineering Improvements..................................................................................................................................................6
RECEIVING YOUR OVEN................................................................................................................................... 7
Inspect the Shipment............................................................................................................................................................. 7
Orientation................................................................................................................................................................................8
Record The Data Plate Information ................................................................................................................................ 10
INSTALLATION .................................................................................................................................................. 11
Hardwire Requirement......................................................................................................................................................... 11
Installation Procedure Checklist ....................................................................................................................................... 11
Required Ambient Conditions........................................................................................................................................... 12
Required Clearances........................................................................................................................................................... 12
Power Source Requirements ............................................................................................................................................ 13
Power Feed Wiring............................................................................................................................................................... 14
Lifting and Handling ............................................................................................................................................................ 14
Leveling................................................................................................................................................................................... 15
Install the Oven ..................................................................................................................................................................... 15
Installation Cleaning............................................................................................................................................................ 15
Install the Shelving............................................................................................................................................................... 16
GRAPHIC SYMBOLS......................................................................................................................................... 17
CONTROL PANEL OVERVIEW ........................................................................................................................ 19
OPERATION ...................................................................................................................................................... 21
Operating Precautions........................................................................................................................................................ 21
Theory of Operations ......................................................................................................................................................... 22
Put the Oven into Operation ............................................................................................................................................ 24
Set the High Temperature Limit ...................................................................................................................................... 25
Setting the Constant Temperature Setpoint ............................................................................................................... 26
Heating Profiles ................................................................................................................................................................... 26
High Temperature Limit Activated ..................................................................................................................................27
Positive Exhaust Venting................................................................................................................................................... 28
Power Exhaust Blower ....................................................................................................................................................... 28
Data Port................................................................................................................................................................................ 29
Change Unit of Measurement ......................................................................................................................................... 29
Auto Tuning........................................................................................................................................................................... 30
GN2Purge Option................................................................................................................................................................. 31
OPERATOR MAINTENANCE .......................................................................................................................... 35
Cleaning................................................................................................................................................................................. 35
Door Gaskets and Chamber Integrity ........................................................................................................................... 36
Electrical Components....................................................................................................................................................... 36
Diagnostic Questionnaire — Heating Issues................................................................................................................37
UNIT SPECIFICATIONS....................................................................................................................................43
Weight..................................................................................................................................................................................... 43
Dimensions............................................................................................................................................................................ 43
Capacity ................................................................................................................................................................................. 44
Air Flow Performance......................................................................................................................................................... 44
Temperature Performance ............................................................................................................................................... 45
Power...................................................................................................................................................................................... 46
REPLACEMENT PART LIST..............................................................................................................................47

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INTRODUCTION
Thank you for purchasing a Cascade TEK oven. We know you have many choices in today’s
competitive marketplace when it comes to constant temperature equipment. We appreciate you
choosing ours. We stand behind our products and will be here if you need us.
READ THIS MANUAL
Failure to follow the guidelines and instructions in this operator manual may create a protection
impairment by disabling or interfering with the unit safety features. This can result in injury or death.
Before using the unit, read the manual in its entirety to understand how to install, operate, and
maintain the unit in a safe manner. Ensure all operators are given appropriate training before the unit
begins service.
Keep this manual available for use by all operators.
SAFETY CONSIDERATIONS AND REQUIREMENTS
Follow basic safety precautions, including all national laws, regulations, and local ordinances in your
area regarding the use of this unit. If you have any questions about local requirements, please
contact the appropriate agencies.
Intended Applications and Locations
TFO forced-air ovens are engineered for constant temperature forced-air drying, curing, and baking
applications in professional, industrial, and educational environments. The ovens are not intended
for use at hazardous or household locations.
SOPs
Because of the range of potential applications this unit can be used for, the operator or their
supervisors must draw up a site-specific standard operating procedure (SOP) covering each
application and associated safety guidelines. This SOP must be written and available to all operators
in a language they understand.
Power
Your unit and its recommended accessories are designed and tested to meet strict safety
requirements.
•Always hardwire the unit power feed to a protective earth-grounded electrical source that
conforms to national and local electrical codes. If the unit is not grounded, parts such as
knobs and controls may conduct electricity and cause serious injury.
•Position the unit so the operator can quickly and easily disconnect or uncouple the power
feed in the event of an emergency.
•Do not bend the power feed excessively, step on it, or place heavy objects on it.
•A damaged power feed can be a shock or fire hazard. Never use a power feed if it is
damaged or altered in any way.
•Use only approved accessories. Do not modify system components. Any alterations or
modifications to your unit not explicitly authorized by the manufacturer can be dangerous
and will void your warranty.

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INTRODUCTION
CONTACTING ASSISTANCE
Phone hours for Customer Support are 6 am – 4:30 pm Pacific Coast Time (west coast of the United
States, UTC -8), Monday – Friday. Please have the following information ready when calling or
emailing Customer Support: the model number, serial number,part number, and part ID (see page
8).
[e-mail]
1-888-835-9250
1-971-371-4096
FAX: [phone]
Manufacturing and Customer Support
Cascade TEK Solutions, LLC
PO Box 625
300 N 26th Ave
Cornelius, OR 97113
USA
MANUFACTURING WARRANTY
For information on your warranty and online warranty registration please visit:
https://www.cascadetek.com/warranty/
ENGINEERING IMPROVEMENTS
Cascade TEK continually improves all of its products. As a result, engineering changes and
improvements are made from time to time. Therefore, some changes, modifications, and
improvements may not be covered in this manual. If your unit’s operating characteristics or
appearance differs from those described in this manual, please contact your Cascade TEK dealer or
customer service representative for assistance.

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RECEIVING YOUR OVEN
INSPECT THE SHIPMENT
•When a unit leaves the factory, safe delivery becomes the responsibility of the carrier.
•Damage sustained during transit is not covered by the manufacturing defect warranty.
•Save the shipping carton until you are certain that the unit and its accessories function
properly.
When you receive your unit, inspect it for concealed loss or damage to its interior and exterior. If you
find any damage to the unit,follow the carrier’s procedure for claiming damage or loss.
1. Carefully inspect the shipping carton for damage.
2. Report any damage to the carrier service that delivered the unit.
3. If the carton is not damaged, open the carton and remove the contents.
4. Inspect the unit for signs of damage. See the orientation depiction on the next page as a
reference.
5. The unit should come with an Installation and Operation Manual and a Programming Guide.
6. Verify that the correct number of accessory items has been included.
7. Carefully check all packaging for accessories before discarding.
Included accessory items
Model Shelves Shelf Clips Leveling Feet
TFO-10 3 12 Clips 4
TFO-28
6
24 Clips
4
Shelves
TFO-10 TFO-28-2

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Figure
1: TFO-28
RECEIVING YOUR OVEN
ORIENTATION
Permanent Connect Wire Braid
6 gauge, 6 inches (150 mm)
Exhaust Vent
Intake Vent
Power Panel (Back)
Accessory
Outlet 6-20R
Fuse Holders for
Accessory Outlet
(2 amps each)
Control Panel
Chamber Ceiling Liner
Temperature Sensor Probes
Door Gasket
Power Supply
Wiring Braid
Shelf Standard Mounting
Rail
Access Port (Back of Oven)

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RECEIVING YOUR OVEN
Power Panel (Back)
Fuse Holders for
Accessory Outlet
(2 amps each)
Accessory
Outlet 6-20R
Intake Vent
Exhaust Vent
Control Panel
Chamber Ceiling
Liner
Permanent Connect Wire Braid
6 gauge, 6 inches (150 mm)
Power Supply
Wiring Braid
Shelf Standard Mounting Rail
Temperature Sensor Probes
Figure
2: TFO-10
Access Port (Back of Oven)
Door Gasket

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RECEIVING YOUR OVEN
RECORD THE DATA PLATE INFORMATION
The data plate contains the unit model number, serial number, part number, and part ID. Customer
Support will need this information during any support call. Record it below for future reference.
•The data plate is located on the back of the oven under the power inlet.
MODEL NO:
SERIAL NO:
PART NO:
PART ID: