Cascade TFO-5, TFO-3, TFO-28, TFO-1, TFO-10 User Manual

FORCED AIR

OVENS

MICROPROCESSOR

CONTROLLED

MODELS: TFO-1, TFO-3, TFO-5, TFO-10, TFO-28

INSTALLATION AND OPERATIONAL MANUAL REV 01.07

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 13.0	SCHEMATICS

These are general purpose, forced air ovens for professional, industrial or educational use where the preparation or testing of materials is done at approximately atmospheric pressure and no flammable, volatile or combustible materials are being heated. These units are not intended for hazardous or household locations or use.

Cascade TEK 5245-A NE Elam Young Parkway Hilllsboro Oregon 97124

2

Toll Free 888-835-9250 503-648-1818 FAX [phone] [e-mail] www.cascadetek.com REV 01.08

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.

1.1Inspection: The carrier, when accepting shipment, also accepts responsibility for safe delivery and is liable for loss or damage. On delivery, inspect for visible exterior damage, note and describe on the freight bill any damage found, and enter your claim on the form supplied by the carrier.

1.2Inspect for concealed loss or damage on the unit itself, both interior and exterior. If necessary, the carrier will arrange for official inspection to substantiate your claim.

1.3Return Shipment: Save the shipping crate until you are sure all is well. If for any reason you must return the unit, first contact your customer service representative for authorization. Supply nameplate data, including model number and serial number.

1.4Accessories: Verify that all of the equipment indicated on the packing slip is included with the unit. Carefully check all packaging before discarding.

Cascade TEK 5245-A NE Elam Young Parkway Hilllsboro Oregon 97124

3

Toll Free 888-835-9250 503-648-1818 FAX [phone] [e-mail] www.cascadetek.com REV 01.08

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”
2.7		Indicates “Over Temperature Safety”
2.8		Indicates “Earth Ground”
2.9		Indicates “Potential Shock Hazard” behind partition
		Indicates “Unit should be recycled” (Not disposed of in land-fill)
2.10

Cascade TEK 5245-A NE Elam Young Parkway Hilllsboro Oregon 97124

4

Toll Free 888-835-9250 503-648-1818 FAX [phone] [e-mail] www.cascadetek.com REV 01.08

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%.

3.1Power Source: The electrical supply circuit to the oven must conform to all national and local electrical codes. Consult the serial data plate for the voltage, cycle wattage and ampere requirements before making connection. VOLTAGE SHOULD NOT VARY MORE THAN 10% FROM THE SERIAL PLATE RATING. This unit is intended for 50/60 Hz application. A separate circuit is recommended to prevent possible loss of product due to overloading or failure of other equipment on the same circuit.

3.2Location: When selecting a site for the oven, consider all conditions which may affect performance, such as extreme heat from steam radiators, stoves, ovens autoclaves, etc. Avoid direct sun, fast-moving air currents, heating/cooling ducts, and high traffic areas. To ensure air circulation around the unit allow a minimum of 30 cm between the unit and any walls or partitions which might obstruct free airflow.

3.3Lifting / Handling: These units are heavy and care should be taken to use appropriate lifting devices that are sufficiently rated for these loads. Units should only be lifted from their bottom surfaces. Doors, handles and knobs are not adequate for lifting or stabilization. The unit should be completely restrained from tipping during lifting or transport. All moving parts, such as shelves and trays should be removed and doors need to be positively locked in the closed position during transfer to prevent shifting and damage.

3.4Leveling: The unit must sit level and solidly. Leveling feet are supplied and must be installed in the four holes in the bottom corners of the unit. With the unit standing upright, turn the leveling feet counterclockwise to raise level. If the unit must be moved, turn the leveling feet in all the way to prevent damage.

Cascade TEK 5245-A NE Elam Young Parkway Hilllsboro Oregon 97124

5

Toll Free 888-835-9250 503-648-1818 FAX [phone] [e-mail] www.cascadetek.com REV 01.08

F O R C E D A I R O V E N M A N U A L

3.5Cleaning: 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. A similar periodic cleaning is recommended.

WARNING: Never clean the unit with alcohol or flammable cleaners with the unit connected to the electrical supply. Always disconnect the unit form the electrical service when cleaning and assure all volatile or flammable cleaners are evaporated and dry before reattaching the unit to the power supply.

3.6Burn In: It is recommended that the unit go through a “burning in” process prior to operation. This is to eliminate the smoking of protective coatings on the element. Read sections 4, 5 and 6 carefully to understand operating requirements. To burn in, turn the Over-Temperature Safety to maximum and set the digital display to 200°C. Run a minimum of one (1) hour until smoke dissipates.

Cascade TEK 5245-A NE Elam Young Parkway Hilllsboro Oregon 97124

6

Toll Free 888-835-9250 503-648-1818 FAX [phone] [e-mail] www.cascadetek.com REV 01.08

F O R C E D A I R O V E N M A N U A L

Section 4

PRECAUTIONS

4.1These 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.Some of the outgassed by-products may be hazardous or unpleasant to operating personnel. If this is the case, the exhausts should be positively ventilated to the outside and dealt with according to local regulations.

4.2Do not operate near noxious fumes.

4.3Do not place sealed or filled containers in the oven chamber.

4.4Do not cut or remove the ground prong from the power cord.

4.5Be sure that the power supply is of the same voltage as specified.

4.6Disconnect the unit from the electrical source before proceeding to make any electrical repairs or replacements.

4.7If a mercury thermometer is used and breakage should occur, all spilled mercury MUST be completely removed from the chamber before continuing operation.

4.8This oven is NOT designed for use in Class I, II, or III locations as defined by the National Electrical Code.

4.9This oven is not intended, nor can it be used, as a patient connected device.

Cascade TEK 5245-A NE Elam Young Parkway Hilllsboro Oregon 97124

7

Toll Free 888-835-9250 503-648-1818 FAX [phone] [e-mail] www.cascadetek.com REV 01.08

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
Power Switch
		Thermostat

Main Temperature

Controller Over-Temperature

Safety Light

5.1Power 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.

5.2Main Temperature Control: This controller consists of the digital display and UP/DOWN arrow pads for inputting set point temperatures and calibration.

5.4Over-Temperature Safety Thermostat: This control is marked with a graduated dial. It is independent of the Main Controller and guards against any failure which would allow the temperature to rise past the Main Controllers set point. This allows continued operation of the oven until the problem can be corrected or service can be arranged. It is not recommended that the unit be operated for extended periods of time using only the Over-Temperature Safety as the controller as temperature uniformity will suffer. See Section 6 on how to set the Over-Temp Safety Thermostat.

5.5Over-Temperature Safety Light: This pilot lamp is directly below the OverTemperature Safety Thermostat. The light will come on when the Safety Thermostat has been activated and taken control of the oven temperature. Under normal operating conditions this pilot lamp should never be on.

Cascade TEK 5245-A NE Elam Young Parkway Hilllsboro Oregon 97124

8

Toll Free 888-835-9250 503-648-1818 FAX [phone] [e-mail] www.cascadetek.com REV 01.08

F O R C E D A I R O V E N M A N U A L

Section 6

OPERATION

6.1Connection to Power Supply: Assure that the electrical power supply is properly configured and rated for the oven.

6.2Flip 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.

6.3Set Main Temperature Controller: Please refer to the Watlow Controller Manual supplied with your oven for programming and more detailed information regarding the controller. Two important points of reference are the sections pertaining to KEY FUNCTIONS and SIMPLE SET POINT OPERATION.

6.4Set Over-Temperature Safety Thermostat (OTP):

(A)The OTP should be initially set to its maximum position to allow the unit to stabilize.

(B)Once the oven is stabile at the desired set point, turn the OTP knob left (counterclockwise) until the OTP light turns ON.

(C)Next, turn the OTP knob back to the right (clockwise) just until the OTP light turns OFF and continue turning the OTP knob to the right another hash mark. This sets the Safety Thermostat at a temperature approximately 10°C above the Main Temperature set point. Note that the OTP Safety is in series with the output from the control relay, and the OTP light will be blinking when the Main Temperature Controller is calling for heat.

(D)Please note the scale is for reference only and does not correlate to the temperature reading of the main controller.

6.5Using Exhaust Vent(s): The slide damper vent(s) on the top of the oven control volume of ventilation. If you want moderate ventilation in the oven, open the vent at the top. Maximum flow thru the vent(s) will slightly increase heat up and recovery time.

Cascade TEK 5245-A NE Elam Young Parkway Hilllsboro Oregon 97124

9

Toll Free 888-835-9250 503-648-1818 FAX [phone] [e-mail] www.cascadetek.com REV 01.08