cascadetek laboratory forced-air oven manual

MODELS: TFO-1, TFO-3, TFO-5, TFO-10, TFO-28INSTALLATION and OPERATION MANUAL

Rev 2/1/13

4861672

www.cascadetek.com

FORCED-AIR LABORATORY OVENS

2www.cascadetek.com Copyright © 2013 Cascade Technical Sciences Inc.

FORCED-AIR LABORATORY OVENS Rev 2/1/13

CONTACT US

TOLL FREE (888) 835 - 9250

FAX (503) 648 - 1798

EMAIL [email protected]

ADDRESS 5245-A NE Elam Young ParkwayHillsboro, Oregon USA 97124

WEBSITE www.cascadetek.com



TABLE OF CONTENTS

TABLE OF CONTENTS



SECTION 1: INSTALLATION

Congratulations on selecting a Cascade TEK forced-air oven. We have put together this manual to make sure you get the most from your oven.

Our Lawyers Say: This is a general-purpose oven for professional, industrial or educational use. It is suitable for a working environment where no flammable, volatile or combustible materials are being heated. This oven is not intended for hazardous or household use. 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. This equipment must be used only for its intended application; ANY ALTERATIONS OR MODIFICATIONS WILL VOID YOUR WARRANTY.

Your City Inspector Says: Local city, county or other ordinances may govern the use of your forced-air oven. If you have any questions about local installation requirements, please contact the appropriate local agency.

Our Design Engineers Say: Your oven is intended for use indoors, at temperatures between 25°C and 40°C, at no greater than 80% Relative Humidity. Extreme external temperatures or humidity levels can affect the oven’s ability to control temperature.

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.

CONGRATULATIONS!




A.1 IMMEDIATELY INSPECT THE CRATE & OVEN FOR FREIGHT DAMAGE: The carrier has responsibility for safe delivery and is liable for loss or damage. Describe on the freight bill any damage found, and enter your claim on the form supplied by the carrier. Photos are always helpful in making sure your freight claim is handled expeditiously.

A.2 Return Shipment: Save the shipping crate until you are sure all is well. If for any reason you must return the unit, first contact Cascade TEK for authorization. Supply nameplate data, including model number and serial number.

A.3 Accessories: Verify that all of the equipment indicated on the packing slip is included with the unit. Carefully check all packaging before discarding. The oven is equipped with shelves. In some models, shelves are wrapped to the side of the oven to prevent interior damage. See Section 4.0: Parts List.

A.4 Location, Location, Location: Consider conditions that may affect the oven’s ability to accurately control temperatures. such as extreme heat from radiators, stoves, other ovens, autoclaves, etc. Avoid direct sun, fast-moving air currents, heating/cooling ducts, and high traffic areas.

IMPORTANT: On benchtop models (TFO-1, TFO-3, TFO-5)fresh air is drawn in from the slats/louvers around the base of the oven. Give the oven room to breathe. Leveling feet help with this as well. To ensure proper air circulation around the unit, allow a minimum of 30 cm between the oven and any walls or partitions, and install leveling feet.

A.5 Easy Tiger! Ovens are heavy and should only be lifted from their bottom surfaces. Doors, handles and knobs are not adequate for lifting or stabilization. Shelves should be removed and doors need to be positively locked closed during transfer to prevent shifting and damage.

A. SET UP



A.6 Remove Pallet. The oven is secured to its pallet with 4 washer/bolts. Remove with a 1/2” wrench.

NOTE: You are about to install leveling feet in those same 4 holes on the bottom of the oven.

A.7 Install Leveling Feet: Each oven comes with 4 leveling feet. These need to be installed in the 4 threaded inserts on the bottom of the oven. Aside from leveling the oven, leveling feet help keep the controls and exterior cool.

A.8 Cleaning: The oven interior was cleaned at the factory, but not sterilized. Clean with a disinfectant that is appropriate for your application. Remove any protective vinyl film on the shelf surface.





A.9 Adjustable Shelves with Clips:

1. Place shelves in the chamber at the desired location with the included shelf clips.

2. Be mindful of the temp probe when installing the shelves.

3. Position the shelves not to block the small holes on the oven’s interior side wall.

Temp Probe




B. FACILITIES

Standard TFO ovens require the following facility connections:

B.1 Electrical Power of the TFO Ovens:

Oven Model Voltage Cycle AmperageTFO-1 120V 50/60 Hz 15 AmpsTFO-3 120V 50/60 Hz 15 AmpsTFO-5 208V-220V 50/60 Hz 13 AmpsTFO-10 208V-220V 50/60 Hz 26 AmpsTFO-28 208V-220V 50/60 Hz 50 Amps

NOTE: Consult the oven data plate for the voltage, cycle, and amperage requirements before making power connection.

B.2 Your Electrician Should Know: A separate circuit for the oven is strongly recommended to prevent possible loss of product due to overloading or failure of other equipment on a shared circuit.

Electrical supply circuit must conform to all national and local electrical codes.

VOLTAGE SHOULD NOT VARY MORE THAN 10% FROM THE DATA PLATE RATING.

B.3 OPTIONAL - GN2 Purge Option: This fitting will allow for connection to nitrogen for the GN2 purge option. 80 PSI inlet connection. See Section 5.0: GN2 Purge if your oven is equipped with the purge option.



Theory: In a Forced-Air Oven (electric convection), a fan circulates hot air rapidly through the oven’s interior. This rapid, forced circulation insures temperatures throughout the oven are uniform and heat is transferred more evenly. By blowing hot air past the product, it prevents cooler air from building up near product surfaces you are trying to dry. Since products in a convection oven are always in contact with hot air, products pick up heat faster and dry faster. Fresh Air Intake: The louvers/slats on the side and back of the TFO oven draw in fresh air, pass it across heaters to a fan blower – directing the air up and across the shelves. On the TFO-10 and TFO-28, the fresh air intake is on the top of the ovens. Allow adequate space for the oven to draw in fresh air. Horizontal Airflow Pattern: The heated air is directed across the oven shelves in a HORIZONTAL pattern. The smaller holes on the side of the oven push hot air across and through the larger holes on the opposite side. The oven is a mix of heated, recirculated air.

TIP: Position the shelves not to block the smaller holes. Exhaust Port (Top): The oven exhausts through the top. This exhaust port can be left open or closed. To speed drying in high-moisture requirements, considering keeping the exhaust vent 100% open to allow the oven to expel the damp hot air and replace with fresh dry hot air. Access Port (Rear): This adjustable access port allows insertion of cables and feedthroughs.

SECTION 2: LET’S GO!

A. HOW FORCED-AIR OVENS WORK

Top Exhaust Port (Adjustable)

Fresh Air Intake (Sides and Rear)

Adjustable Access Port - Cables, Feedthroughs, etc. (Back Center Wall)

Horizontal Air Flow Pattern (Across Shelves)



Cascade TEK ovens are typically configured in degrees Celsius. °C is displayed in red on the upper right of the Watlow Controller.


°C °F20 6822 71.624 75.226 78.828 82.430 8632 89.634 93.236 96.838 100.440 10442 107.644 111.246 114.848 118.450 12252 225.654 129.256 132.858 136.460 14062 143.664 147.266 150.868 154.470 15872 161.674 165.276 168.878 172.480 17682 179.684 183.286 186.888 190.4

°C °F90 19492 197.694 201.296 204.898 208.4100 212105 221110 230115 239120 248125 257140 284145 293150 302155 311160 320165 329170 338175 347180 356185 365190 374195 383200 392210 410220 428230 446340 464250 482260 500270 518280 536290 554300 572

CELCIUS/FARENHEIT CONVERSION TABLE

WATCH: Changing your Watlow EZ-ZONE from °C to °F

TIP: Ovens want to heat. They are not able to control well at lower temperatures.

- Max Temp. with Standard Gasket

- Max Temp. TFO-10 & TFO-28

- Max Temp. TFO-1, TFO-3, TFO-5

http://www.youtube.com/watch?v=jbG9DCM76Ws&feature=related




B. CONTROL PANEL OVERVIEW / SYMBOLS

TEMPERATURE & HIGH LIMIT CONTROL

ON

OFF

EZ1

EZ2

WATLOW EZ-ZONE

˚C

POWER SWITCH -It must be in the “I” or “on” position to operate.

Up Temp

Down Temp

TEMP CONTROLLER - Displays temperature,set-point, and profile status.

GREEN VALUE - the temperature you want to get to.

RED VALUE - the current temperature.

BUILT-IN HIGH LIMIT CONTROL - Shuts down heaters if oven temp exceeds main temp controller set-point. This will need to be set first thing.

Cascade TEK’s Forced Air Oven Controller

WATCH THE TUTORIAL (Internet connection required)

http://www.youtube.com/watch?v=muClGLQ8EJA&feature=youtu.be




Your oven may contain a variety of graphic symbols which should help in identifying the use and function of the available user adjustable components.

ATTENTION! Consult your manual for further description.

Indicates “AC Power”

Indicates “Degrees Celsius”(Seen on Temperature Controllers)

Indicates “Over Temperature Safety”(High Limit Controller)

Indicates “Earth Ground”

Indicates “Potential Shock Hazard” behind partition

RECYCLE THIS UNIT! Do the right thing for the planet and your children. Do not dispose of in land-fill.

Indicates “Temperature”

Indicates “Warning: Hot Surface”

GRAPHIC SYMBOLS



C. QUICK START GUIDE (SET-POINT TEMPERATURE)

STEP 1 Put stuff in, close door.

STEP 2 Turn oven on. Green power switch and controller lights up.

STEP 3 Set High Limit Temperature on Controller.

It is important to make sure the overtemp protection is set properly. It will shut down power to the heaters if the oven “runs away” or heats beyond your desired temperature. When you first get the oven, the overtemp is configured from the factory at the highest possible setting: 270°C for the benchtop ovens and 305°C for the TFO-10 and TFO-28. We recommend setting the overtemp about 5°C higher than the temperature you want to run the oven to. For example, if you are heating your product to 200°C, set the overtemp to 205°C.

1. Press the Green Advance Key until “Limit High, set-point 1” (LhS1) appears on the screen.

2. Press the UP/DOWN arrows unit the desired overtemp temperature is reached in the red digital display.

3. Press the Green Advance Key to activate the overtemp protection.


EZ1

EZ2

WATLOW EZ-ZONE

˚C

Desired High Limit Temp Limit High, set-point 1

Green Advance Key“4” Hi-temp alarm (Lih1)



STEP 4 Single Temperature Set-Point Operation1. Use UP/DOWN arrows to select desired set-point

temperature. Red = the current temp inside the oven, Green = the temperature you desire.

2. Red “2” light is on to show power to the heaters.

STEP 5 Oven heats to set-point temperature.


WATCH: Getting Started with your Cascade TEK Oven Controller

EZ1

EZ2

WATLOW EZ-ZONE

˚C

Current Temperature

Set-Point Temperature

Heating

Up Temperature

Down Temperature

WATCH: Set OverTemp Control - Cascade TEK’s TFO Ovens

http://www.youtube.com/watch?v=uVjN0V72aYg

http://www.youtube.com/watch?v=9Bebj4MrJQg&feature=related



STEP 6 Using Exhaust Vent: The slide damper vent on the top of the oven controls ventilation. The oven does not need additional venting. However, powerful fumes or heat output may lead you to attach a vent hose and exhaust the fumes/heat elsewhere.

When attaching a vent hose:

1. Put a dip in the hose. Do not vent straight up. Moisture can condense and run back into the oven.

2. Keep exhaust fans far away to prevent heat loss from oven.3. A standard dryer hose and clamp will work fine.

STEP 7 When finished, turn off main power, or press the DOWN arrow on Temp Controller to lower temperature below ambient.

STEP 8 Open door and remove samples.CAUTION: They may be hot.




D. CONTROLLER PROGRAMMING


PROGRAM CONTROLLER WITH SOFTWARE

Watlow’s Configurator Software is an optional tool you can use to program your controller. The software presents pages and menus as they are in the controller’s display, RUI and manuals:

• On-screen parameter help & copy parameter settings• Save and download configuration files on the computer with all

the information required to set up a controller• Preserves settings for archiving, recovery or to simplify setting

up another controller• Enables files to be e-mailed or made available to users on a

network or via the internet to aid them with set up

You will need:• Cascade TEK’s USB to RS-485 Cable Connection - available for

purchase.• EZ-ZONE Configurator software (included). Located on the disk:

Controller Support Tools• Directory: EZ-ZONE Configuration Software > Software > EZ

ZONE > EZ-ZONE Configurator

Oven RS-485 Comm Port Watlow Configurator SoftwareUSB / 485 Converter Cable

http://www.watlow.com/downloads/en/software/ezzone.cfm



STEP 1 Flip the POWER Switch to the ON position. Controller will illuminate.

STEP 2 Set High Limit Temperature on Controller.

It is important to make sure the overtemp protection is set properly. It will shut down power to the heaters if the oven “runs away” or heats beyond your desired temperature. When you first get the oven, the overtemp is configured from the factory at the highest possible setting: 270°C for the benchtop ovens and 305°C for the TFO-10 and TFO-28. We recommend setting the overtemp about 5°C higher than the temperature you want to run the oven to. For example, if you are heating your product to 200°C, set the overtemp to 205°C.

2. Press the Green Advance Key until “Limit High, set-point 1” (LhS1) appears on the screen.

3. Press the UP/DOWN arrows unit the desired overtemp temperature is reached in the red digital display.

4. Press the Green Advance Key to activate the overtemp protection.

5. Press the reset button to activate High Limit Control.

WATCH: How to set Ramp and Soak Profiles


PROGRAM RAMP AND SOAK TEMP PROFILE

EZ1

EZ2

WATLOW EZ-ZONE

˚C

Desired High Limit Temp Limit High, set-point 1

Green Advance Key“4” Hi-temp alarm (Lih1)

http://www.youtube.com/watch%3Fv%3DptAXIwFVERM




STEP 3 Trust me. Watch this first:

WATCH: Programming a Simple Ramp and Soak Temperature Profile

Simple Profile: Single Set-Point and Time(Example: 150°C for 1 hour)

1. Green Advance Key – hold for 3 seconds2. See Profile 1 appear on display3. Press Green Advance Key to Step 1

4. Press Green Advance Key to Step Type StyP

Step 1 – Use UP and DOWN arrows until Ti (Time Step appears). This step tells the controller to achieve 150°C as quickly as possible. (Or how quickly to ramp to temp.)

1. Ti (Time Step)2. Press Green Advance Key until you see tSP1

3. Press UP/DOWN arrows until 150°4. Press Green Advance Key5. Hour = 0 hoUr (0 Hours) (Enter number of Hours)6. Press Green Advance Key7. Min = 0 Min (0 Minutes) (Enter number of Minutes)8. Press Green Advance Key9. SEC =0 SEC (0 Seconds) (Enter number of Seconds)10. Press Green Advance Key11. Ent 1 = OFF

12. Press Green Advance Key13. Ent 2 = OFF

14. Press Green Advance Key15. Press Infinity Key which takes you to back to P1

16. Use UP arrow to select 2 (Step 2 in Profile 1)

http://www.youtube.com/watch?v=ptAXIwFVERM




STEP 3CONT.

Step 2 - Wait for Process Step

1. Press Green Advance Key until you see StyP (Step Type)

2. Press UP/DOWN arrows until WPr (Wait For Process). This means we are waiting for the oven to get close to the set-point temp (145°C) before we actually start the process time.

3. Press Green Advance Key4. WPi (Wait For Process 1)5. Press UP/DOWN arrows to select 16. Press Green Advance Key7. Press UP/DOWN arrow to about 5°C lower than your

process temperature (145°C if you want 150°C) 8. Press Green Advance Key9. Ent 1 = OFF



14. Use the UP/DOWN arrows to select Step 3.

Step 3 - Soak Step (Step 3 in Profile 1)

1. Press Green Advance Key. To see Step Type (StyP)2. Use UP/DOWN arrows until soah (Soak Step)

appears. This step tells the controller how long to remain at 150°C

3. Press Green Advance Key4. Hour = 1 hoUr (1 Hours) (Specify time)5. Press Green Advance Key6. Min = 0 Min (0 Minutes) (Specify time)7. Press Green Advance Key8. EC = 0 SEC (0 Seconds) (Specify time)9. Press Green Advance Key10. Ent 1 = OFF







STEP 3 CONT.

Step 4 - (End of process, reduce temperature – oven does not actively cool)

1. Press Green Advance Key until you see Step Type (StyP)

2. Press UP/DOWN arrows until Ti (Time Step)3. Press Green Advance Key4. Press UP/DOWN arrows until 150°5. Change 150° to 0°6. Press Green Advance Key7. Hour = 0 hoUr (0 Hours)8. Press Green Advance Key9. Min = 0 Min (0 Minutes) 10. Press Green Advance Key11. SEC = 0 SEC (0 Seconds)12. Press Green Advance Key13. Ent 1 = OFF


16. Press Green Advance Key17. Press Infinity Key, which takes you to back to P1


Step 5 - End Step (Step 5 in Profile 1)

1. Press Green Advance Key until you see StyP (Step Type)

2. Press UP/DOWN arrows until End (End Process). 3. Press Green Advance Key4. Press UP/DOWN arrows until HoLd (Hold Step). This

will hold the oven temperature at the last set-point. (The temp that was called out in Step 4.)



9. Press Green Advance Key10. Press Infinity Key, which takes you to back to P1.11. Press Infinity Key for 2 seconds to go back to home

screen.




STEP 4 Start the Profile

1. Press EZ-1 button a. 3 things should happen right away

i. The red “ramp” symbol will light upii. The green application display should read

150°iii. The red “2” light will come on showing the

oven is calling for heat. The oven should begin heating.

EZ1

EZ2

WATLOW EZ-ZONE

˚C

Current Temperature

Set-Point Temperature

Heating

Press EZ1 Button to Start

Ramping

Press EZ2 Button to Stop



A.1 Gasket Inspection: The door gasket is considered a “high-wear” item. Heat and pressure will take its toll. If you notice loss of door seal, tearing or wear, the gasket should be replaced. Contact Cascade TEK for replacement gaskets.

Please see Section 4.0: Parts List.

A.2 Interior Cleaning Improves Performance: Remove shelves. Be careful not to disturb the sensor located in the back. Any undue pressure may cause breakage and replacement will be necessary. Disinfect with a solution that is suitable for your application. Any oily residue or moisture in the chamber should be removed after each operation to ensure maximum performance.

Using a lint free cloth, wipe down the oven. DO NOT use chlorine-based bleaches or abrasives as this may damage stainless steel surfaces. DO NOT use spray cleaners that might leak through openings and get on electrical parts.

WARNING: Always disconnect the unit from the electrical service when cleaning and assure all volatile or flammable cleaners are evaporated and dry before reattaching the unit to the power supply.

A. MAINTENANCE

SECTION 3: PROPER CARE AND FEEDING




B. PRECAUTIONS AND FAQS

PRECAUTIONS

B.1 THIS IS NOT AN EXPLOSION PROOF OVEN. Do not place or use explosive, combustible, or flammable materials in or around the oven. This oven is not suitable for use in Class I, II, or III locations as defined by the National Electrical Code NFPA 70, U.S.A.

B.2 Disconnect from electrical power source before attempting to make any repairs, cleaning or component replacements. This is just plain common sense.

B.3 Melting The Door Gasket: Although the maximum temperature of the oven is rated at 260°C-300°C, different door gaskets will degrade at different temperatures.

You will need our high-temp Teflon door gasket to reach temperatures above 235°C.

Oven Model Part #TFO-1 3450678TFO-3 3450679TFO-5 3450680TFO-10 3450681TFO-28 3450682

WATCH: A teenager installs our high-temp door gasket.

WATCH THE TUTORIAL (Internet connection required)

http://www.youtube.com/watch?v=b8wYrs1ny_M&feature=plcp




INSTALLATION FAQS

Will my TFO-5 run on 208V?

Yes, the TFO-5 will run on 208V. However, with the lower wattage you may notice slower heat up times and maximum high temperature may be limited.

Where / how does the oven exhaust?

TFO ovens exhaust via the top mounted port. It is fully adjustable in the opened and closed positions. It is okay to run the oven with the exhaust port fully closed, however, having it open may improve dry times.

Using Exhaust Vent: The slide damper vent on the top of the oven controls ventilation. The oven does not need additional venting. However, powerful fumes or heat output may lead you to attach a vent hose and exhaust the fumes/heat elsewhere.

When attaching a vent hose:

1. Put a dip in the hose. Do not vent straight up. Moisture can condense and run back into the oven.

2. Keep exhaust fans far away to prevent heat loss from oven.3. A standard dryer hose and clamp will work fine.

See Section 5.0 options regarding the power exhaust feature on the TFO-10 and TFO-28.

What are the BTU’s of the oven?

There are formulas for calculating BTUs; based on the wattage of the oven. However, the actual BTU’s for your particular situation would have to be determined by your specific use. Here are the MAXIMUM BTU conversions by model.

Oven Model Watts BTU Per HourTFO-1 1,600 5,461TFO-3 1,600 5,461TFO-5 2,000 6,827TFO-10 5,300 18,091TFO-28 10,300 35,430




PROCESS FAQS

My oven has the dry air purge option. What is the PSI for the inlet?

80 PSI. See Section 5.0: GN2 purge.

Can I put my product on the oven floor?

Yes.

How much weight will the shelves hold?

The shelves are made of 304 stainless steel, we estimate about 50 to 75 lbs. max.

How full can the oven be?

Less is more. Over crowding the oven will inhibit air flow and cause inconsistent, longer drying time.



CONTROL FAQS

Where is the oven’s controller manual on the Watlow disc?

Temperature Controller Manual (Watlow EZ)

This manual can be found on the Watlow “Controller Support Tools” disc included with the oven.

User Manuals > EZ-ZONE User Manuals > PM Integrated (Temp Controller)

How do I change my controller from Celsius to Fahrenheit?

1. Press and hold both UP and DOWN arrows 6 seconds.2. Display says A1 SEt.3. Use arrows to go to gLbL (Global) on upper display.4. Press green Recycle Key once to display C or F.5. Use arrows to go to change to C or F.6. Press Infinity Key twice to exit to main screen.

See video instructions here.

My display reads “Er11” or “Er12”. What does it mean?

1. Loose thermocouple. Thermocouple wires have come loose on the back of the controller. Jumper a wire across the TC input to see if error clears. Check thermocouple connection inside oven.

How do I find the serial number of my Watlow EZ Controller?

This info may be necessary for warranty support from Watlow:

1. Hold down the Infinity and Green Recycle Keys simultaneously (will take about 8 seconds).

2. Display says CUSt and FCty.3. Press DOWN arrow once to go to diAg on upper display.4. Press Green Recycle Key once to display Pn (Part Number).5. Part number will scroll across display, it should look similar

this “PM9R1CJ-ACFJCAA”.6. Press green Recycle Key again to see Sn (Serial Number).7. Press green Recycle Key again to see dAtE (Date of

Manufacture).8. Press Infinity Key twice to exit to main screen -


http://www.youtube.com/user/CascadeTek#p/u/2/jbG9DCM76Ws



CONTROL FAQS

What do the Watlow profile terms mean?

Terms Description

tiTime Step: Select temperature, time to temperature and toggle outputs.

Ent1Event 1: Activates an option on the oven. (Power exhaust or GN2 Purge.)

Ent 2 Event 2: Activates an option on the oven.

SoAh SOAK: Holds temperature for set time period. Can also set events in this step.

JLJump Loop: Jumps to previous step (JS) for number of counts (JC)

WPrWait For Process. Waits for temperature to reach set-point before next step continues.

EndEnd Step. Choose user to return to set-point before profile.

Watch our video: Cascade TEK Tutorial on Watlow EZ-ZONE.

How do I get the EZ-ZONE out of “OFF” mode?

1. Hold down UP and DOWN arrows together.2. Display says A1 and oPer.3. Use UP/DOWN arrow to go to LooP on upper display.4. Press green Recycle Key to display 1 LooP.5. Press green Recycle Key again and use UP/DOWN keys to

ensure display reads “Auto”.6. Press Infinity Key 3 times to exit to main screen.7. Arrows should allow you to manually change temperature.

What do the red lighted numbers on the EZ-ZONE Controller mean?

Numbers Description

“1” Retransmit. The controller is retransmitting a signal to a chart recorder or datalogging device.

“2” The controller is calling for heat.“3” Outputs in use. Typically Ent1 or Ent2.“4” The overtemp is alarming.


http://www.youtube.com/user/CascadeTek#p/u/7/ptAXIwFVERM




Why isn’t my oven heating?

If the red “2” light is lit on the controller, the controller is calling for heat. If no heat is being generated, a relay may have failed, so the heaters are not being energized.

1. Is the red “2” light lit on your controller?a. If yes, the oven is calling for heat. A relay may have

failed, or heaters have shorted.2. Is your overtemp limit alarming?

a. If the EZ Limit Controller is alarming or set too low, it will prevent the oven from heating. The “4” will be illuminated on the EZ-ZONE Controller if the overtemp is alarming. It will need to be reset.

3. Is your overtemp set too low?a. See Section 2, Step 3 (Quick Start Guide) to set

overtemp.4. Has the door been opened? Or has there been a

power outage?a. It takes time for the oven to regain heat and

stabilize. Look for the solid or flashing red “2” to make sure the oven is heating.

TEMPERATURE FAQS




My oven door won’t close properly.

Often in shipping the door hinges can become misaligned. Adjust the door hinges, and make sure the door is squared to the rest of the unit.

My oven is noisy.

The fan motor is wearing out. If it does not move at all, it has seized and needs to be replaced.

Oven will not turn on.

Check wall power source. Check fuse or circuit breaker.

Why is my oven smoking the first time I turn it on?

Residual oils from manufacturing are probably burning off. Did you remember to remove the protective plastic coating on the shelves prior to installation?

MECHANICAL FAQS



SECTION 4: PARTS LIST

TFO-1 FORCED-AIR OVEN



9570763 ELEMENT ESSY.9600570 BLOWER MOTOR ASSY.2600535 BLOWER WHEEL 6 X 24880549 BLOWER MOTOR3450722 GASKET 10 FT. (RATED 230C)5120689 SHELF2700512 ADJUSTABLE FEET3300513 FUSE 16A

9570783 ELEMENT ASSY.9600571 BLOWER MOTOR ASSY.2600535 BLOWER WHEEL 6 X 24880549 BLOWER MOTOR3450722 GASKET 10 FT. (RATED 230C)4120690 SHELF2700512 ADJUSTABLE FEET3300513 FUSE 16A

9570665 ELEMENT ASSY.2350564 HEATING ELEMENT9600572 BLOWER MOTOR ASSY.2600535 BLOWER WHEEL 6 X 24880549 BLOWER MOTOR3450722 GASKET 12 FT. (RATED 230C)5120691 SHELF2700512 ADJUSTABLE FEET3300516 FUSE T10A

PART NO. DESCRIPTION

NOTE: Part Numbers are subject to change.Please confirm description and model number with your order.

PARTS LIST




ALL FORCED-AIR OVEN PARTS

7030533 SOLID STATE RELAY9650503 SOLID STATE RELAY ASSY.6600519 TC PROBE CLOSED END4650553 TC PROBE CLOSED END7850570 GREEN I/O SWITCH4450506 SOFT TOUCH KNOB1250511 SHELF CLIPS - SMALL8000542 TERMINAL BLOCK9660505 WATLOW PM CONTROLLER1250512 SHELF CLIPS - LARGE

PART NO. DESCRIPTION



9570679 ELEMENT ASSY.9600646 MOTOR ASSY.2600535 MOTOR WHEEL 6 X 24880548 MOTOR3450722 GASKET 11.5’995-00007 SHELF2700500 ADJUSTABLE FEET

9570666 ELEMENT ASSY. (TFO-28)9570767 ELEMENT ASSY. (TFO-28-3)9600550 MOTOR ASSY.2600535 MOTOR WHEEL 6 X 24880548 MOTOR3450722 GASKET 17’ (RATED 230C)995-00005 SHELF2700500 ADJUSTABLE FEET





DOOR GASKETS


Standard Door Gasket(Max temp 235C)


Teflon High Temp Door Gasket(Max temp 300C)




The GN2 purge creates an inert atmosphere (non-corrosive, non-condensing, non-oxidizing) 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 purge will displace 02 and other impurities. 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. Failure to properly complete a purge cycle may result in oxidation. A slight positive pressure should be maintained while running up to the set point temperature and throughout the heating portion of operation. GN2 atmosphere should be maintained until the work load is below the temperature at which oxidation will occur. Oxidation is generally detectable by a discoloration seen in the product. 125°C is considered the highest / safe temperature. Most materials can be removed from the oven at this temperature without discoloration.

SECTION 5: OPTIONAL FEATURES

GN2 PURGE




OPERATION OF GN2 PURGE

Facilitating the GN2 Purge

1. Connect a source of GN2 to the ¼” female pipe thread provided at the back top of the oven.

2. Supply should be rated at 80 PSI.

Using the GN2 Purge in Manual mode

1. Ensure intake and exhaust damper on top of the oven are closed.

2. Turn knob on front panel to “ON”. GN2 will begin to flow into the oven.

3. Adjust flow to desired rate on the flow meter.4. Turn the knob to “AUTO” to stop the flow of GN2.

Using the GN2 Purge in Auto mode

Programming the controller with the time and steps you want GN2 to flow during your drying process is required. For assistance in programming your controller to run GN2 Purge in Auto Mode, See Section 2.0 D: Program a Ramp and Soak Profile.

1. Create a drying profile, identifying which steps and time you want the GN2 to stop and start.

2. Ent1 (Event 1) = ON will start the flow of GN2.3. Ent2( Event 2) = OFF will stop the flow of GN2.4. Ensure the intake and exhaust dampers are closed.5. Turn the knob on the front panel to “AUTO”.6. On the Watlow EZ-ZONE control, start your pre-

programmed drying/purge profile.

“OFF” Flow Meter



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. It is not intended to enhance air exchanges or ventilation.

TIP: If you are running the oven above 80°C and NOT using the power exhaust, CLOSE the oven’s top exhaust vent. This will help prevent heat deterioration of the power exhaust motor.


POWER EXHAUST - TFO-10 & TFO-28 MODELS

Hot Exhaust Exhaust Vent (Open)



Installing the Power ExhaustThe Power Exhaust is packaged separately and shipped inside the oven.

1. Install the oven per manufacturer’s instructions prior to installing power exhaust.2. Unwrap the Exhaust assembly.3. Remove the eight screws from the top of the oven around the Exhaust Port4. Place over the exhaust vent on top of the oven.5. Align the screw holes.6. Attach the power exhaust with the eight screws.7. Plug the power exhaust into the accessory outlet on the oven.

TIP: If you are running the oven above 80°C and NOT using the power exhaust, CLOSE the oven’s top exhaust vent. This will help prevent heat deterioration of the power exhaust motor.

Using the Power Exhaust: 1. Open the exhaust damper on top of the oven.2. Open the intake damper.3. Turn knob on front panel to “ON”4. The power exhaust will evacuate the oven. 5. Monitor the temperature on the main controller.6. When the oven has cooled sufficiently, turn the knob to “OFF”.7. The power exhaust will turn off.8. Close the exhaust damper.


INSTALLATION OF POWER EXHAUST

OPERATION OF POWER EXHAUST



Track Oven Temperature with a 24 hour or 7 day chart recorder. An easy visual to insure your process is staying on track, maintaining temperature. A record of each process.

Multi-channel, digital datalogger also available to measure oven control temp and the temperature of individual parts inside the oven. Refer to the Datalogger Manual.


CHART RECORDER - DATA LOGGING



This “plug and play” cable is available for purchase from Cascade TEK. Call us, we will send you one. It allows you to use Watlow’s Configurator Software for your oven.

Complete IQ / OQ manual customized to your oven and tracked by serial number. Ask for details.

Factory-Authorized performance of IQ / OQ available upon request. Please inquire for pricing and availability.


USB TO RS-485 CABLE CONNECTION

IQ / OQ: QUALIFICATION MANUALS

ON-SITE QUALIFICATION SERVICES



TFO-1: 1.6 Cubic Foot Forced-Air Oven

SECTION 6: FORCED-AIR OVEN SPECIFICATIONS

CAPACITY 1.6 cubic feet (45 cubic litres)INTERIOR DIMENSIONS (WxDxH) 13” x 14.63” x 14.75” (33.02 x 37.16 x 37.47)EXTERIOR DIMENSIONS (WxDxH) 22.5” x 21” x 32” (57.15 x 53.34 x 81.28)TEMPERATURE RANGE Ambient +15°C to 235°C (With Standard

Gasket)TEMPERATURE UNIFORMITY +/-3°C at 150°CTEMPERATURE TIME TO 150°C 10 minutesTEMPERATURE RECOVERY TIME 2 minutes (after door open 30 seconds)AIR FLOW 120 feet per minuteCONTROLS Watlow EZ programmable control with ramp &

soak capabilities. Built-in, independent overtemperature controller. DB25 pin RS-485serial comm port.

POWER 120V / 1Ph / 50/60 Hz / 15 AmpHEATER WATTAGE 1500 WattsSTANDARD DOOR GASKET Silicone 235°C Max (300°C Teflon available)SHELVES 2 Adjustable, 304 Stainless SteelACCESS PORT 2.75” RearWEIGHT 127 lbs. (195 lbs. shipping)WARRANTY 1 Year





CAPACITY 3.2 cubic feet (90.6 cubic litres)INTERIOR DIMENSIONS (WxDxH) 18” x 19” x 16.5” (45.72 x 48.26 x 41.91)EXTERIOR DIMENSIONS (WxDxH) 28” x 26” x 35.25” (71.12 x 66.04 x 81.92)TEMPERATURE RANGE Ambient +15°C to 235°C (With Standard



POWER 120V / 1Ph / 50/60 Hz / 15 AmpHEATER WATTAGE 1600 WattsSTANDARD DOOR GASKET Silicone 235°C Max (300°C Teflon available)SHELVES 2 Adjustable, 304 Stainless SteelACCESS PORT 2.75” RearWEIGHT 171 lbs. (220 lbs. shipping)WARRANTY 1 Year





CAPACITY 4.9 cubic feet (138.75 cubic litres)INTERIOR DIMENSIONS (WxDxH) 23” x 20” x 18.5” (58.42 x 50.8 x 46.99)EXTERIOR DIMENSIONS (WxDxH) 33" x 27" x 37.25" (83.82 x 68.58 x 94.62)TEMPERATURE RANGE Ambient +15°C to 235°C (With Standard


soak capabilities. Built-in, independentovertemperature controller. DB25 pin RS-485serial comm port.

POWER 208-230V / 1Ph / 50/60Hz / 9 AmpsHEATER WATTAGE 2000 WattsSTANDARD DOOR GASKET Silicone 235°C Max (300°C Teflon available)SHELVES 2 Adjustable, 304 Stainless SteelACCESS PORT 2.75” RearWEIGHT 210 lbs. (295 lbs. shipping)WARRANTY 1 Year





CAPACITY 10.4 cubic feet (294.5 cubic litres)INTERIOR DIMENSIONS (WxDxH) 30” x 20” x 30” (76.2 x 50.8 x 76.2)EXTERIOR DIMENSIONS (WxDxH) 44” x 29.75” x 77.5” (111.76 x 75.57 x 196.85)TEMPERATURE RANGE Ambient +15°C to 260°CTEMPERATURE UNIFORMITY +/-3°C at 150°CTEMPERATURE TIME TO 150°C 10 minutesTEMPERATURE RECOVERY TIME 2 minutes (after door open 30 seconds)AIR FLOW 200 feet per minuteCONTROLS Watlow EZ programmable control with ramp

& soak capabilities. Built-in, independent overtemperature controller. DB25 pin RS-485 serial comm port.

POWER 208-230V / 1Ph / 50/60Hz / 26 AmpsHEATER WATTAGE 5300 WattsSHELVES 3 Adjustable, 304 Stainless Steel, Storage

cabinet baseACCESS PORT 2.75” RearWEIGHT 382 lbs. (540 lbs. shipping)WARRANTY 1 Year



TFO-28: 28 Cubic Foot Forced-Air Oven


CAPACITY 28.0 cubic feet (793 cubic litres)INTERIOR DIMENSIONS (WxDxH) 31.62” x 25” x 61” (80.31 x 63.5 x 154.94)EXTERIOR DIMENSIONS (WxDxH) 42.5” x 34.75” x 86.25” (107.9 x 88.3 x 218.4)TEMPERATURE RANGE Ambient +15°C to 260°CTEMPERATURE UNIFORMITY +/-3°C at 150°CTEMPERATURE TIME TO 150°C 10 minutesTEMPERATURE RECOVERY TIME 2 minutes (after door open 30 seconds)AIR FLOW 200 feet per minuteCONTROLS Watlow EZ programmable control with ramp &


POWER 208-230V / 1Ph / 50/60Hz / 50 AmpsHEATER WATTAGE 10300 WattsSHELVES 6 Adjustable, 304 Stainless SteelACCESS PORT 2.75” RearWEIGHT 455 lbs. (600 lbs. shipping)WARRANTY 1 Year



TFO-1 120V FORCED-AIR OVEN

SECTION 7: SCHEMATICS

F1

G1

H1

W2

Y2

T1

S1

R1

L3

K3

J3

L4

K4

T2

S2

R2

98

99

CF

CD

CE

FAN

3 4

2 1

1 2 3 54 6 7 8 9 10 11 12 1314 15 16 17 18 19 20 21 22 23 24 25

GREEN LIGHTED SWITCH

FAN MOTOR

WATLOWCONTROL

SUB D CONNECTOR

DUAL TYPE JTHERMOCOUPLE

SOLIDSTATERELAY

½ OF RELAY½ OF RELAY

RELAY COIL FORRELAY

2

4

6

8

1 0

BLACK HT

BLA

CK

HT

BLACK HT

BLACK HT

BLACK HT

BLA

CK

HT

BLACK HT

BLACK HT

BLACK HT

RED HT

WHITE HT

WH

ITE H

T

WHITE HT

WHITE HT

WH

ITE H

T

WHITE HT

BLACK

WHITE

BLUE

RED

RE

D RE

D

WH

ITE WH

ITE

1200 W

FUSEDINLET





F1

G1

H1

W2

Y2

T1

S1

R1

L3

K3

J3

L4

K4

T2

S2

R2

98

99

CF

CD

CE

FAN

3 4

2 1

1 2 3 54 6 7 8 9 10 11 12 1314 15 16 17 18 19 20 21 22 23 24 25


FAN MOTOR

WATLOWCONTROL

SUB D CONNECTOR


SOLIDSTATERELAY


RELAY COIL FORRELAY

2

4

6

8

1 0

BLACK HT

BLA

CK

HT

BLACK HT

BLACK HT

BLACK HT

BLA

CK

HT

BLACK HT

BLACK HT

BLACK HT

RED HT

WHITE HT

WH

ITE H

T

WHITE HT

WHITE HT

WH

ITE H

T

WHITE HT

BLACK

WHITE

BLUE

RED

RE

D RE

D

WH

ITE WH

ITE

1200 W

EMI FILTER

WHITE HT

WHITE HT

BLACK HT

FUSEDINLET



TFO-1-2E FORCED-AIR OVEN


F1

G1

H1

W2

Y2

T1

S1

R1

L3

K3

J3

L4

K4

T2

S2

R2

98

99

CF

CD

CE

FAN

3 4

2 1

1 2 3 54 6 7 8 9 10 11 12 1314 15 16 17 18 19 20 21 22 23 24 25


FAN MOTOR

WATLOWCONTROL

SUB D CONNECTOR


SOLIDSTATERELAY


RELAY COIL FORRELAY

2

4

6

8

1 0

BLACK HT

BLA

CK

HT

BLACK HT

BLACK HT

BLACK HT

BLA

CK

HT

BLACK HT

BLACK HT

BLACK HT

RED HT

WHITE HT

WH

ITE H

T

WHITE HT

WHITE HT

WH

ITE H

T

WHITE HT

BLACK

WHITE

BLUE

RED

RE

D RE

D

WH

ITE WH

ITE

1200 W

EMI FILTER

WHITE HT

WHITE HT

BLACK HT

FUSEDINLET





F1

G1

H1

W2

Y2

T1

S1

R1

L3

K3

J3

L4

K4

T2

S2

R2

98

99

CF

CD

CE

FAN

3 4

2 1

1 2 3 54 6 7 8 9 10 11 12 1314 15 16 17 18 19 20 21 22 23 24 25


FAN MOTOR

WATLOWCONTROL

SUB D CONNECTOR


SOLIDSTATERELAY


RELAY COIL FORRELAY

2

4

6

8

1 0

BLACK HT

BLA

CK

HT

BLACK HT

BLACK HT

BLACK HT

BLA

CK

HT

BLACK HT

BLACK HT

BLACK HT

RED HT

WHITE HT

WH

ITE H

T

WHITE HT

WHITE HT

WH

ITE H

T

WHITE HT

BLACK

WHITE

BLUE

RED

RE

D RE

D

WH

ITE WH

ITE

1500 W

WHITE HTFUSEDINLET





F1

G1

H1

W2

Y2

T1

S1

R1

L3

K3

J3

L4

K4

T2

S2

R2

98

99

CF

CD

CE

FAN

3 4

2 1

1 2 3 54 6 7 8 9 10 11 12 1314 15 16 17 18 19 20 21 22 23 24 25


FAN MOTOR

WATLOWCONTROL

SUB D CONNECTOR


SOLIDSTATERELAY


RELAY COIL FORRELAY

2

4

6

8

1 0

BLACK HT

BLA

CK

HT

BLACK HT

BLACK HT

BLACK HT

BLA

CK

HT

BLACK HT

BLACK HT

BLACK HT

RED HT

WHITE HT

WH

ITE H

T

WHITE HT

WHITE HT

WH

ITE H

T

WHITE HT

BLACK

WHITE

BLUE

RED

RE

D RE

D

WH

ITE WH

ITE

2000 W

EMI FILTER

WHITE HT

WHITE HT

BLACK HT

FUSEDINLET





34

21

F1

G1

H1

W2

Y2

T1

S1

R1

L3

K3

J3

L4

K4

T2

S2

R2

98

99

CF

CD

CE

1 2 3 54 6 7 8 9 10 11 12 1314 15 16 17 18 19 20 21 22 23 24 25R

ED

RE

D

WH

ITE

WH

ITE

3

5

4

6

C1 CONTACTOR


FAN MOTORS

WATLOWCONTROL

SUB D CONNECTOR


C1 COILSOLID STATERELAY

5200 W

OUTLET

BLA

CK

10G

BLA

CK

10G

BLACK 10G

BLACK HTB

LAC

K H

T

BLACK HTBLACK HTBLACK HT

BLA

CK

HT

BLACK HT

BLA

CK

HT

RED HT

RE

D H

T

RED HT

RED HT

RED HT

RE

D H

T

2 1

RED HT

RE

D H

T

BLACK HT

C2 COIL

C2RELAY

7 8

5 6

3 4

BLA

CK

HT

FAN

FAN

RED

RED WHITE

WHITE

BLACK

BLACK BLUE

BLUE

RED HTBLACK HT

CHART RECORDER LEADSBLACK HT RED HT

TBTBBLA

CK

10G

BLA

CK

10G

GR

/Y10

G

GR

/Y10

G

EMI FILTER

COOLING FAN





34

21

34

21

F1

G1

H1

W2

Y2

T1

S1

R1

L3

K3

J3

L4

K4

T2

S2

R2

98

99

CF

CD

CE

FAN

FAN

1 2 3 54 6 7 8 9 10 11 12 1314 15 16 17 18 19 20 21 22 23 24 25R

ED

RE

D

WH

ITE

WH

ITE

RED

RED WHITE

WHITE

BLACK

BLACK BLUE

BLUE

L1

T1

L3

T3

L1 L3

T1 T3

C1 C2CONTACTORSC1,C2


FAN MOTORS

WATLOWCONTROL

SUB D CONNECTOR

DUAL TYPE JTHERMOCOUPLE C1 COIL

C2 COIL

SOLID STATERELAYS

5200 W

5200 W

OUTLET

BLA

CK

6G

BLA

CK

6G

BLACK 10GBLACK 10G

BLA

CK

10G

BLA

CK

10G

BLA

CK

10G

BLA

CK

10G

BLACK 10G

BLACK 10G

BLACK HTB

LAC

K H

T

BLACK HT


BLA

CK

HT

BLA

CK

HT

BLACK HT

BLA

CK

HT

BLA

CK

HT

RED HT

RE

D H

T

RED HT

RED HT

RED HT

RED HT

RE

D H

T

RE

D H

TR

ED

HT

C3RELAY

5 6

3 4

7 8

BLACK HT

BLA

CK

HT

RED HT

RE

D H

T

C3 COIL

CHART RECORDER LEADS RED HTBLACK HT

TBTB

GR

/Y6G

GR

/Y6G

BLA

CK

6GB

LAC

K6G

EMI FILTER

COOLING FAN



TFO-28-3 FORCED-AIR OVEN


34

21

34

21

F1

G1

H1

W2

Y2

T1

S1

R1

L3

K3

J3

L4

K4

T2

S2

R2

98

99

CF

CD

CE

FAN

FAN

1 2 3 54 6 7 8 9 10 11 12 1314 15 16 17 18 19 20 21 22 23 24 25R

ED

RE

D

WH

ITE

WH

ITE

RED

RED WHITE

WHITE

BLACK

BLACK BLUE

BLUE

CONTACTORC1


FAN MOTORS

WATLOWCONTROL

SUB D CONNECTOR


C1 COIL

SOLID STATERELAYS

OUTLET

BLA

CK

6G

BLA

CK

6GB

LAC

K10

G

BLACK HT

BLA

CK

HT

BLACK HT


BLA

CK

HT

BLA

CK

HT

BLACK HT

BLA

CK

HT

RED HT

RE

D H

T

RED HT

RED HT

RED HT

RED HT

RE

D H

TR

ED

HT

RELAYC3

5 6

3 4

7 8

BLACK HT

BLA

CK

HT

RED HT

RE

D H

TC3 COIL

CHART RECORDER LEADS RED HTBLACK HT

SSRRELAY 1

SSRRELAY 2

BLA

CK

6G

BLA

CK

10G

BLA

CK

10G

BLACK 10G

BLACK 10G

BLACK 10G

L1 L2 L3

T1 T2 T3

11.7Ώ 11.7Ώ 11.7Ώ



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”.

During the Warranty Period, the Manufacturer, at its election and expense, will repair or replace the product or parts that are proven to Manufacturer’s satisfaction to be defective, or at Manufacturer’s option, refund the price or credit (against the price of future purchases of the product) the price of any products that are proven to Manufacturer’s satisfaction to be defective.

This warranty does not include any labor charges if outside of the U.S.A. This warranty does not cover any damage due to accident, misuse, negligence, or abnormal use.

Use of Manufacturer’s product in a system that includes components not manufactured by Manufacturer is not covered by this warranty.

This warranty is void in the event that repairs are made by anyone other than Manufacturer without prior authorization from Manufacturer.

Any alteration or removal of the serial number on Manufacturer’s products will void this warranty. Under no circumstances will Manufacturer be liable for indirect, incidental, consequential, or special damages.

The terms of this warranty are governed by the laws of the state of Oregon without regards to the principles of conflicts of laws thereof. If any provision of this limited warranty is held to be unenforceable by any court of competent jurisdiction, the remainder of this limited warranty will remain in full force and effect.

This warranty is in lieu of and excludes all other warranties or obligations, either express or implied. Manufacturer expressly disclaims all implied warranties, including without limitation, the warranties of merchantability and fitness for a particular purpose.

SECTION 8: WARRANTY

cascadetek laboratory forced-air oven manual

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