625 East Bunker Court • Vernon Hills, IL 60061-1844 • ColeParmer.com

OPERATION MANUAL

StableTemp Economy Mechanical

Convection Oven

Model : 52412-89,-90,-91,-92,-93,-94

This operation manual describes the important subjects on maintaining

the product’s functions, safety, and proper uses. Be sure to read

carefully before using this equipment. Please keep this manual close to

the equipment at all times for reference and easy accessibility to new

users.

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CONTENTS

Safety Information............................................................................ 3

Installation............................................................................ 4

Notice................................................................. ................. 5

Operat ion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Controller............................................................................. 7

Ma in tenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Troubleshooting........................................................... 13

Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Specifications ....................................................................... . 14

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Safety Information

These instructions contain important operating and safety information. The user must carefully

read and understand the instruction manual provided, prior to operation of unit. The unit has been

designed for optimal function, reliability, safety, and ease of use. It is the user’s responsibility to

install the oven in conformance with local electrical codes.

Do not use the unit in areas where flammable or explosive gasses are present. This

unit is NOT explosion-proof. To avoid possible fire and/or property loss, and injury

or death to personnel, do not place oven on or near any combustible surface.

Warning mark on product

Warning labels are affixed on the product and located on the front of the door. Be fully aware of

the warning marks and messages during operation.

Safety Precautions

Warning precautions alerts for possible situations of

personal injury.

Caution precautions alerts for possible damage to

equipment

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Installation

Do not use this unit is areas where flammable or explosive gasses are present. This

unit is NOT explosion-proof. Do not place oven on or near any combustible

surface to avoid the possibility of fire and resulting property loss and injury or death

to personnel.

Do not use explosive and/or flammable substances that include explosive and/or

flammable components. Not adhering and not following these precautions may

result in explosions or fires.

Do not place sample(s) on the floor of the chamber. There is a possibility that the

sample(s) may overheat and catch fire.

The unit must be connected to a power source that meets the electrical

requirements as specified on the unit’s nameplate.

Use power supplies that are grounded. Ungrounded power may cause serious

damage to the user and equipment. For safety, do not connect any ground

conductor to a gas or water pipe.

(1) Open the package carefully. Make sure all parts are accounted for before discarding

packaging materials.

a. Main body

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b. Operating manual

c. Fuse

d. Shelf

e. Shelf guide

(2) Install the unit on a flat leveled surface, free from drafts, and heat sources, to allow for

natural air movement to dissipate heat from the oven.

(3) Allow enough space to the left of the unit to allow for the door to open 180°.

(4) Avoid heat source and direct sun light, place the unit where ambient temperature range is

between 5C ~ 40C and relative humidity is lower than 80%.

(5) Do not install unit in a danger zone, where there are flammable gases, explosive materials,

and organic solvents.

(6) The unit will only work correctly when using a proper power supply.

(7) Outlets should be located near the unit and easily accessible.

(8) Do not allow moisture, organic solvents, dust, and/or corrosive gas to enter into the control

box.

(9) Do not install unit near other machines generating strong high frequency noise.

Notice

(1) Do not touch power cord and/or other electric components with wet hands.

(2) Do not explosive and/or flammable chemicals inside of the oven.

(3) Do not place flammable materials near oven.

(4) Use caution when handling samples inside of the oven. Samples will be hot to the touch

during or after testing runs.

(5) Do not pour water directly on the unit while cleaning.

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Operation

(1) Main body

(2) Ventilation hole – during operation ventilation gets very hot, wear dry safety gloves if

adjustment is needed.

(3) Shelf level adjustor

(4) Shelf

(5) Door

(6) Door Handle

(7) Chamber

(8) Temperature Controller

(9) Over temperature limit.

(10) Door packing

(11) Control panel

(12) Main switch & Fuse

(13) Foot

(14) Door limit switch – When door is open during operation the door open LED will blink

and the unit will automatically shut off heater and blower. When the door remains open

for more than one minute an audible alarm will notify user that the door is open.

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Controller

Specificity

(1) CLS-Control System temperature and heater output are controlled by the main CPU. The

Main CPU is able to perform precise PID calculations. All safety control is controlled by

selective functional Logic IC which is installed separately. It is designed to conduct

safety performance against any electric and/or electronic shock on the unit.

(2) CLS-Control System shuts down all 2 phase power supply to each component

immediately and informs user of instability through audio and visual device, and then

keeps unit in safe mode until all instability conditions have been resolved.

(3) CLS-Control System provides users with two choices when the unit operation are

terminated by power failure and then recovered; the first choice allows for operation of

unit to resume and the second choice allows for the unit to keep at standstill.

(4) CLS-Control System is designed to keep very small amount of currency (only 5V, 10mA)

in contact point. This allows for extended durability at the contact point.

Name and operation

(1) HEATER LED – Indicates that the heating function is “ON”

(2) Auto Tune LED – Indicated by flickering when Auto-tuning (self calibration feature) is in

operation.

(3) Wait On Timer LED - Indicates operation delay start time. LED blinks when the timer is

activated and is off when the timer is deactivated.

(4) Wait Off Timer LED - Indicating operation stop time. LED blinks when the timer is

activated and off when the timer is deactivated.

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(5) Door open LED – Indicates that the door is open. LED turns “ON” when the door is

open.

(6) Over heating alarm LED – Indicates that overheating has been triggered. LED blinks

while emitting an audible sound, when heater rises higher than the set temperature.

When the oven over heats power is cut to the temperature controller. To resume

operation set the knob 15% higher than the set temperature and press the Start/Stop

button.

(7) Temp button – For setting the temperature and accessing sub menus.

(8) Timer button – For setting the timer and accessing sub menus.

(9) Up button – For increasing set value or cycling through setting values.

(10) Down button – For decreasing set value or cycling through setting values.

(11) Enter button – saves set value.

(12) Start/Stop button – Starts or stops operation of unit.

(13) Lock button – locks controller buttons.

(14) Auto Tune button – Activates auto-tune when pressing the A/T button for 1 second.

(15) RUN LED - Turns on when the oven is running and turns off when the oven stops.

(16) SV display – displays set temperature and remaining time when timer is on.

(17) PV display - displays present temperature.

Temperature Setting

(1) Press button once. From the SV LED display, the set temperature value (SV) will

blink, allowing for input of different temperature values.

(2) Press buttons to increase or decrease the temperature digit values. Then

press button to save the desired set temperature value.

(3) If the button is not pressed within 10 seconds of the temperature change the SV

display will default back to original saved set temperature value.

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(4) Press button once more when the SV LED display is blinking to access

additional menus and settings of the TEMP button.

(5) Additional function of button

(1) A maximum of three pre set values may be

stored in location slot Sv.1, Sv.2, and Sv.3.

Press button twice to access SV.1 (set

Value 1). To change the values in SV.1, use

the and arrow to increase or

decrease to desired set value, and then

press the (enter) button. From the home

LED display, press button three times

to access SV.2 or four times to access SV.3.

(2) From the home screen press the five

times to select the desired temperature unit

of measurement. On the initial PV LED

display it will display Unit and the initial SV

LED display will have either degree Celsius or

degree Fahrenheight. Use the and

arrow to cycle through the temperature unit

measurements.

(3) Press the button 6 times to access the

BIAS setting. The BIAS setting will allow for

temperature adjustment to a calibrated

external thermocouple. To adjust the BIAS

setting use the or arrows to

increase or decrease values same to the

calibrated external thermometer, and then

press the (enter) button to save the

adjustment. The adjustment value will be

displayed on the SV LED display.

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Timer Setting

(1) Press button once to access the delay (W/ON) and shut off (W/OFF) timers. The

timer on.t (W/ON) and off.t (W/OFF) is shown on the PV LED display and the timer

values are shown on the SV LED display. To adjust the time value use the and

arrow to increase or decrease time and then press the (enter) button.

(2) W/ON LED will turn on along with an audible beep after wait on timer set value input

has been completed.

(3) Press button once more, to access wait off timer. Set timer by pressing

and arrow and then press the (enter) button.

(4) W/OFF LED will turn on along with an audible beep after wait on timer set value input

has been completed.

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(5) Refer to the diagram below to view a visual representation of the timer function.

I. Wait On Timer - The unit begins to run after a set desired time has passed. Maximum is

99 hr 59 min, and minimum is 1 min.

II. Wait Off Timer - The unit will stop running after desired time has passed. Wait OFF

timer will begin once PV reaches SV value.

(6) To deactivate timer function press the button. The timer LED will turn off. To use

one time set, set the desired timer with the desired time value, and set the undesired

timer input value at 0.

(7) To access additional functions of TIMER, press the button once more when the

PV LED displays off.t. The LED display will display as shown below.

I. The Arun function is a function that controls how the oven will run in case there

is a power failure. If YES is selected the oven will resume back where it left off.

Auto Tuning

Perform Auto Tuning in order to get precise and rapid temperature control. PID value saved

automatically after Auto Tuning.

(1) Set all preset and desired temperature value.

(2) Press button for 3 seconds, Auto will display on the PV LED display and Tune will

display on the SV LED display.

(3) Auto Tune time varies according to the environment in which the oven is installed. The

LED will turn off when Auto Tune and Present temperature and Set temperature meet.

Wait on Timer Wait off Timer

Temperature

Time

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Lock Function

This feature allows the user to disable all buttons except for the LOCK button to prevent

unwanted user from changing values.

(1) Press button for 3 seconds, activation of lock function will be followed by an

audible Beep.

(2) To deactivate the lock function press button for 3 seconds.

(3) This protects improper pressing of the controller buttons while operation.

Maintenance

Disconnect oven from power supply before cleaning or performing any maintenance

or repair work.

Use proper way to clean and maintain the equipment. Do not pour water into the

equipment and do not use polishing powder, thinner, kerosene, acid etc.

Do not disassemble the equipment. Disassembling the equipment can cause

electric shock due to voltage inside the equipment.

(1) Turn off the main power switch and pull out a power plug from wall outlet.

(2) Wash with soft cloth containing neutral detergent or distilled water.

(3) Dry with dry cloth.

(4) Do not use organic solvent.

(5) Serious damage cannot be repaired

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Troubleshooting

(1) Check points when the unit doesn’t work.

I. Check power supply.

II. Check fuse.

III. Check Run LED display to see if it is on. Press Start/Stop button if it is off.

IV. Check if power is out.

(2) Malfunction check list.

☞ If you can’t recover the instrument please call Cole-Parmer 800-323-4340.

Warranty

Cole-Parmer Instrument Company warrants this product to be free from significant deviations in

material and workmanship for a period of 2 years from date of purchase. If repair or adjustment is

necessary and has not been the result of abuse or misuse within the one year period, please

return—freight pre-paid—and correction will be made without charge. Cole-Parmer alone will

determine if the product problem is due to deviations or customer misuse.

Out of warranty products will be repaired on a charge basis.

Malfunction symptom What to check and what to do.

Buzzer sound

continuously(1)

If Door is opened, Press START/STOP Switch once and check out

Run LED turns on.

No temperature

control.

Check if there are machines generating strong high frequency noise

near by the unit.

Check if Some contaminants are in the control panel.

Do Auto tune again.

Air circulation is not

made in the chamber

Check the door switch (open and close the door 2~3times)

Check the blower works correctly

Abnormal sound

Check the Impeller of blower is OK inside of the chamber.

Open the back plate of the instrument and Check the Impeller of

Blower touches any part.

No power

Check the Main power Switch is on.

Check the power supply is on in the room.

Check the power failure.

Check the fuse is OK

Temperature wouldn’t

rise

Check the RUN LED is on.

Press the START/STOP Switch once if the RUN LED is off.

Check the door is opened.

Buzzer sound

continuously(2)

Check the Over temp limit is set lower than current set value of the

temperature.

If it is, set the value of the Over temp limit at least 15% higher than

PV.

Press the START/STOP Switch once and the check the RUN LED.

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Specifications

Model 52412-89

52412-92

52412-90

52412-93

52412-91

52412-94

Chamber volume 1.8 cu ft/52L 3.5 cu ft/100L 5.3 cu ft/150L

Permissible

environmental condition

Temperature 5℃ to 40℃

Maximum relative humidity 80%

Altitude up to 2,000m

Temperature

Range Amb.+10℃ ~ 220℃

Fluctuation1) ±0.4℃ at 100℃

Variation1) ±3.3℃ at 100℃ ±3.3℃ at 100℃ ±2.3℃ at 100℃

Controller Digital PID auto tuning

Timer Wait on time, Wait off time(Max. 99hr 59min, Min. 1min)

Sensor type K-CA

Material

Internal Stainless steel, 0.6t

External Steel,1.2t, powder coating

Shelves Stainless steel wire, electro polished

Heater

Incoloy sheath

230VAC/1000W

120VAC/800W

Incoloy sheath

230VAC/1400W

120VAC/1000W

Incoloy sheath

230VAC/1700W

120VAC/1200W

Insulation Mineral wool (50t)

Door gasket High temperature grade foamed silicone rubber

Over temp. limit Hydraulic over temp. limit

Ventilation slide Stainless steel, dia 38mm×2EA

Safety device CLS(Custom Logical Safe)-control system

Dimensions

(W×D×H)

interior(㎜) 375×370×370 455×430×510 585×460×555

Exterior(㎜) 530×535×737 610×595×877 740×625×922

Electric

requirement

AC230V,

50/60Hz 4.3A 6.0A 7.4A

AC120V,

50/60Hz 6.8A 8.4A 10.1A

Net weight 36kg 47kg 59kg

※ 1) Technical data (according to DIN 12880)