FORCED AIR OVENS MICROPROCESSOR CONTROLLED MODELS: TFO-1, TFO-3, TFO-5, TFO-10, TFO-28 INSTALLATION AND OPERATIONAL MANUAL REV 01.
F O R C E D A I R O V E N M A N U A L TABLE OF CONTENTS SECTION 1.0 RECEIVING AND INSPECTION SECTION 2.0 GRAPHIC SYMBOLS SECTION 3.0 INSTALLATION SECTION 4.0 PRECAUTIONS SECTION 5.0 CONTROL PANEL OVERVIEW SECTION 6.0 OPERATION SECTION 7.0 MAINTENANCE SECTION 8.0 TROUBLESHOOTING SECTION 9.0 PARTS LIST SECTION 10.0 WARRANTY SECTION 11.0 OPTIONAL EQUIPMENT SECTION 12.0 UNIT SPECIFICATIONS SECTION 13.
F O R C E D A I R O V E N M A N U A L Section 1 RECEIVING AND INSPECTION Your satisfaction and safety require a complete understanding of this unit. Read the instructions thoroughly and be sure all operators are given adequate training before attempting to put the unit in service. NOTE: This equipment must be used only for its intended application; any alterations or modifications will void your warranty. 1.
F O R C E D A I R O V E N M A N U A L Section 2 GRAPHIC SYMBOLS Your oven may contain a variety of graphic symbols which should help in identifying the use and function of the available user adjustable components. 2.1 This symbol indicates that you should consult your manual for further description or discussion of a control or user item. 2.2 Indicates “AC Power” 2.3 Indicates “Manual Control” 2.4 Indicates “Timer” 2.5 °C Indicates “Degrees Celsius” 2.6 Indicates “Temperature” 2.
F O R C E D A I R O V E N M A N U A L Section 3 INSTALLATION Local city, county or other ordinances may govern the use of this equipment. If you have any questions about local requirements, please contact the appropriate local agency. Installation may be performed by the end user. Under normal circumstances this unit is intended for use indoors, at room temperatures between 5° and 40°C, at no greater than 80% Relative Humidity (at 25°C) and with a supply voltage that does not vary by more than 10%. 3.
F O R C E D 3.5 A I R O V E N M A N U A L Cleaning: The oven interior was cleaned at the factory, but not sterilized. Remove all interior parts if assembled and clean with a disinfectant that is appropriate to your application. DO NOT USE chlorine-based bleaches or abrasives as this will damage the stainless steel interior. DO NOT USE spray cleaners that might leak through openings and cracks and get on electrical parts or that may contain solvents that will harm the coatings.
F O R C E D A I R O V E N M A N U A L Section 4 PRECAUTIONS 4.1 These units have been designed with vents on top of the chamber. In order to work effectively and safely, some precautions will need to be taken by the operator. A. In most applications, the vent will need to be opened during drying or degassing for best results. B. THIS OVEN IS NOT DESIGNED TO HANDLE COMBUSTIBLE GASSES AND IS NOT AN EXPLOSION PROOF UNIT. Do not place explosive, combustible, or flammable materials into the chamber. C.
F O R C E D A I R O V E N M A N U A L Section 5 CONTROL PANEL OVERVIEW Over-Temperature Safety Thermostat Power Switch Main Temperature Controller Over-Temperature Safety Light 5.1 Power Switch: The main power switch on the control panel (green lighted I/O) controls all power to the unit and must be in the I/ON position before any systems are operational. The switch will be lighted when in the I/ON position. 5.
F O R C E D A I R O V E N M A N U A L Section 6 OPERATION 6.1 Connection to Power Supply: Assure that the electrical power supply is properly configured and rated for the oven. 6.2 Flip the POWER switch to the ON position. The digital temperature display will indicate a temperature value. It should light up if properly connected to the power supply. 6.
F O R C E D A I R O V E N M A N U A L 6.6 Recommended Burn-In: The Refer to Section 3.5 and 3.6 for information on recommended cleaning and burn in process prior to operation. 6.7 Quick Start Operation Example Power Switch Current Temp Display 1. 2. Turn on the power switch (located at the left of the instrument panel) It should glow with a green light if it is connected to the power correctly.
F O R C E D A I R O V E N M A N U A L Cascade TEK 5245-A NE Elam Young Parkway Hilllsboro Oregon 97124 Toll Free 888-835-9250 503-648-1818 FAX 503-648-1798 info@cascadetek.com www.cascadetek.com REV 01.
F O R C E D A I R O V E N M A N U A L Cascade TEK 5245-A NE Elam Young Parkway Hilllsboro Oregon 97124 Toll Free 888-835-9250 503-648-1818 FAX 503-648-1798 info@cascadetek.com www.cascadetek.com REV 01.
F O R C E D A I R O V E N M A N U A L Section 7 MAINTENANCE Cleaning: Clean the oven interior and remove and clean shelves on a regular basis. Use a disinfectant that is suitable for your application. DO NOT USE chlorine-based bleaches or abrasives, as this will damage the stainless steel interior. DO NOT USE spray cleaners that might leak through openings and cracks and get on electrical parts or that may contain solvents that will harm the coatings. A similar periodic cleaning is recommended.
F O R C E D A I R O V E N M A N U A L Section 8 TROUBLESHOOTING TEMPERATURE Temperature too high 1/ Controller set too high-see section 6.3 2/ Controller failed on – call Customer Service. 3/ Wiring error – call Customer Service. Display reads "HI" or "400"+ Probe is unplugged, is broken or wire to sensor is broken – trace wire from display to probe; move wire and watch display to see intermittent problems Temperature too low 1/ OTP limit set too low – see section 6.4.
F O R C E D A I R O V E N M A N U A L Indicated chamber temperature unstable 1/ ±0.1 may be normal. 2/ Is fan working? –verify movement of air in chamber. 3/ Is ambient room temperature radically changing – either door opening or room airflow from heaters or air conditioning ? – stabilize ambient conditions. 4/ This may happen if exhaust stack is 100% open or if power exhaust is cycling – adjust stack to at least ¼ closed.
F O R C E D A I R O V E N M A N U A L MECHANICAL Motor doesn't move 1/ If shaft spins freely: check connections to motor and check voltage to motor. 2/ If shaft rubs or is frozen, relieve binding and retest. Motor makes noise 1/ If noise is from the motor, tap the top of motor shaft with ball peen hammer. 2/ If the sound gets worse, tap the other end of the shaft – avoiding touching the blower wheel. 3/ If there is no change, call Customer Service.
F O R C E D A I R O V E N M A N U A L OTHER Controller on at all times "locked-up" 1/ Adjust set point to room temperature. If the unit is still heating, replace the solid state relay. 2/Turn unit off and on to reset. Controller timer resets on its own 1/ Confirm that power from wall is consistent and within specifications. Front panel displays are all off 1/ Check connections to the temperature display control board and assure that all are tight and in the correct orientation. 2/ Check for wire damage.
F O R C E D A I R O V E N M A N U A L 8.1 Watlow Controller Settings: Refer to Section 1-2 of Watlow Manual These are internal controller default settings pre-set at the factory for optimum oven performance. Altering these settings can cause performance problems. Please contact Customer Service if settings have been altered.
F O R C E D A I R O V E N M A N U A L Section 9 PARTS LIST Please note – Part Numbers are subject to change. Please confirm description and model number with your order. PART NO. DESCRIPTION TFO-1 1800516 9570762 9600565 100056 4880512 600002 5120689 200129 PART NO. DESCRIPTION TFO-3 Power Cord Element Assy. Blower Motor Assy. Blower Wheel 6 x 2 Blower Motor Gasket 10 ft Shelf Adjustable Feet TFO-5 1800516 9570537 9600565 100056 4880512 600002 5120690 200129 Power Cord Element Assy.
F O R C E D A I R O V E N M A N U A L Section 10 LIMITED WARRANY Manufacturer warrants for the original user of this product in the U.S.A. only that this product will be free from defects in material and workmanship for a period of one year from the date of delivery to the original user. (the “Warranty Period”).
F O R C E D A I R O V E N M A N U A L Section 11 OPTIONAL EQUIPMENT 11.1 COBEX CHART RECORDER INSTALLATION: TFO-10 & TFO-28 The following installation procedure is for installing a 6” Cobex Chart Recorder in a Cascade TEK TFO-10 or TFO-28 Forced Air Oven: Uncrate oven. Do not connect power. Locate Chart recorder cut-out at the right corner of the instrument panel. Remove cut out cover. Remove the top of the oven to gain access to the electrical compartment.
F O R C E D A I R O V E N M A N U A L 11.2 POWER EXHAUST: TFO-10 & TFO-28 Description: The power exhaust provides rapid evacuation (return to ambient) of the oven. The power exhaust mounts to the top of the exhaust vent on the top of the oven. The power exhaust plugs into the switched 220V outlet on the back top of the oven. Front View of Power Exhaust Operation of Power Exhaust Refer to Watlow 981 Controller Manual regarding “Event Outputs”.
F O R C E D A I R O V E N M A N U A L 11.3 GN2 PURGE OPERATION Description: The GN2 purge allows for an inert atmosphere within the oven’s interior. Generally, the purge cycle should force a volume of gas equal to 5 to 10 times the volume of the oven. The atmosphere within the oven is a mixture of room air and the purging gas until the purge cycle is completed. For this reason, the purge cycle should be finished before heat is applied to the chamber.
F O R C E D A I R O V E N M A N U A L Section 12 UNIT SPECIFICATIONS Please refer to the unit data plate for its individual specifications. TFO-1, Interior Dimensions: Exterior Dimensions: Temperature Range: Temperature Uniformity: Controls: Heaters: Power: Shelves: Weight (uncrated): TFO-3 Interior Dimensions: Exterior Dimension: Temperature Range: Temperature Uniformity: Controls: 1.
F O R C E D TFO-10 Interior Dimensions: Exterior Dimension: Temperature Range: Temperature Uniformity: Controls: Heaters: Power: Shelves: Port: Vent: Weight (uncrated): TFO-28 Interior Dimensions: Exterior Dimension: Temperature Range: Temperature Uniformity: Controls: Heaters: Power: Shelves: Port: Vent: Weight (uncrated): A I R O V E N M A N U A L 10.
F O R C E D A I R O V E N M A N U A L ASTM E 145-68 & ASTM 1292-94 Cascade TEK 5245-A NE Elam Young Parkway Hilllsboro Oregon 97124 Toll Free 888-835-9250 503-648-1818 FAX 503-648-1798 info@cascadetek.com www.cascadetek.com REV 01.
F O R C E D A I R O V E N M A N U A L Section 13 SCHEMATICS WIRE DIAGRAM : TFO-1 & TFO-3 Cascade TEK 5245-A NE Elam Young Parkway Hilllsboro Oregon 97124 Toll Free 888-835-9250 503-648-1818 FAX 503-648-1798 info@cascadetek.com www.cascadetek.com REV 01.
F O R C E D A I R O V E N M A N U A L WIRE DIAGRAM: TFO-5 Cascade TEK 5245-A NE Elam Young Parkway Hilllsboro Oregon 97124 Toll Free 888-835-9250 503-648-1818 FAX 503-648-1798 info@cascadetek.com www.cascadetek.com REV 01.
F O R C E D A I R O V E N M A N U A L WIRE DIAGRAM: TFO-10 Cascade TEK 5245-A NE Elam Young Parkway Hilllsboro Oregon 97124 Toll Free 888-835-9250 503-648-1818 FAX 503-648-1798 info@cascadetek.com www.cascadetek.com REV 01.
F O R C E D A I R O V E N M A N U A L WIRE DIAGRAM: TFO-28 Cascade TEK 5245-A NE Elam Young Parkway Hilllsboro Oregon 97124 Toll Free 888-835-9250 503-648-1818 FAX 503-648-1798 info@cascadetek.com www.cascadetek.com REV 01.
