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19

4. OPERATION PROCEDURES

Overheat Prevention Device Setup

This unit features an overheat prevention device (manual reset) which, has an independent temperature
monitoring circuit, CPU, sensor and output circuit, but uses the same power source, display, and keys as
the control panel. This is in addition to the internal automatic overheat prevention function (auto reset), built
in for added measure against overheating.

Setting range/function

The automatic overheat prevention function (auto reset) is integrated internally into the unit and is set to
automatically activate (cutting off power to heater) when chamber temperature exceeds temperature setting
on control panel by 12°C or more.

The overheat prevention device temperature setting range is from 0°C to 50°C beyond the maximum
temperature setting for DKN-C series units.

When chamber temperature exceeds objective temperature setting and reaches that of the overheat
prevention device, the circuit is shut off and error code "Er19" is shown flashing in the control panel display,
accompanied by a sounding alarm.
Once activated,"Er19" continues to be displayed until main circuit breaker (MCB) is turned off (wait 5
seconds) then back on.

Setting temperature for
overheat prevention

1. Turn on main circuit breaker (MCB).

Default values are displayed for about four seconds.

Turn on power. Displays will show initial settings. Current
chamber temperature (top), main temperature setting (center)
and temperature setting for overheat prevention device
(bottom) will show in respective displays.

2. Set temperature for overheat prevention

①

Press the SUBMENU key.

②

Press the

▼▲ several times until

is shown in the

top display.

③

Press the ENTER key. The temperature setting will be

shown flashing in center display.

Note:

To prevent false errors, set the value 10

°

C or more above the

main temperature setting.

④

Select value using the

▼▲ keys and press the ENTER key.

Setting value will show in the bottom display. This completes
the setting.

⑤

Press ENTER

CAUTION

①

The standard setting temperature of device is

“maximum unit temperature setting of plus 20°C”

or

“temperature setting plus 20°C”. If unit performs poorly, increase by 5°C more.

②

Note that improper temperature settings may cause malfunction resulting in equipment damage
or fire. Always use appropriate temperature settings.

The factory default setting for overheat prevention device is 290

°C (DKN912C is 240°C)

.

Do not attempt to set value higher.

③

Overheat prevention device is designed to protect unit against overheating, not to protect test
samples against damage caused by overheating, nor to protect against injury or death resulting
from negligence from processing explosives, inflammables or other hazardous substances in
this unit.

①

②

③

④

⑤

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Содержание DKN302C

Страница 1: ...Scientific Co Ltd Forproperequipmentoperation pleasereadandbecome thoroughly familiar with this instruction manual before use Always keep equipment documentation safe and close at hand for convenient future reference Warning Read instruction manual warnings and cautions carefully and completely before proceeding Yamato Scientific America Inc Santa Clara CA Printed on recycled paper ...

Страница 2: ......

Страница 3: ...rature Quick Auto Stop Mode 21 Auto Stop Mode 22 Programmed Operation 26 Pattern Repeat Function 31 Program Planning Worksheet 32 Other Functions Calibration Offset 34 Other Functions Keypad Lock 35 5 HANDLING PRECAUTIONS 36 6 MAINTENANCE PROCEDURES 39 Inspection and Maintenance 39 7 EXTENDED STORAGE AND DISPOSAL 40 Extended Storage Unit Disposal 40 Disposal Considerations 40 8 ERROR CODES 41 Read...

Страница 4: ...ote 1 Serious injury is defined as bodily wounds electrocution bone breaks fractures or poisoning which may cause debilitation requiring extended hospitalization and or outpatient treatment Note 2 Minor injury is defined as bodily wounds or electrocution which will not require extended hospitalization or outpatient treatment Note 3 Property damage is defined as damage to facilities equipment build...

Страница 5: ...AUTION General Caution Caution Shock Hazard Caution Burn Hazard Caution Do Not Heat Without Water Caution May Leak Water Caution Water Only Caution Toxic Chemicals RESTRICTION General Restriction No Open Flame Do Not Disassemble Do Not Touch ACTION General Action Required Connect Ground Wire Level Installation Disconnect Power Inspect Regularly ...

Страница 6: ...power cable bundled or otherwise tangled may cause power cable to overheat and or catch fire DO NOT damage power cable Damaging the power cable by forcibly bending pulling or twisting may cause fire or electric shock to the operator NEVER process explosive or combustible substances Attempting to process use explosive or combustible substances in near unit may cause explosion or fire See List of Ha...

Страница 7: ...re intended only to facilitate short distance maneuvering at installation site Do not roll unit over extended distances on casters Damage to the casters may result DO NOT operate equipment during thunderstorms In the event of a thunderstorm terminate operation and turn off main circuit breaker MCB immediately A direct lightning strike may cause damage to equipment or result in fire or electric sho...

Страница 8: ... power supply Before connecting these models confirm facility power supply is set up to properly deliver required voltage supply 2 Choose an appropriate installation site DO NOT install unit where installation surface is not completely level not even or not clean where flammable or corrosive gases fumes may be present where external temperature will exceed 35ºC will fall below 5ºC or will fluctuat...

Страница 9: ...y switching the main circuit breaker MCB ON or OFF can produce a spark which can then be relayed during operation causing a fire or explosion when near flammable or explosive fluids chemicals or gases fumes See List of Hazardous Substances P 52 Never process explosive or flammable substances in unit Fire or explosion causing serious injury or death may result See Hazardous Substances List P 52 for...

Страница 10: ...e resulting in possible complications and or malfunction 6 Do not overload chamber racks 7 Space test samples appropriately Maximum load for unit racks is 15kg each when load is evenly distributed Place items as evenly and as far apart as possible and do not exceed maximum load rating Bunching items together to get more onto a rack may prevent proper temperature control As a rule of thumb use appr...

Страница 11: ... Be advised that maximum operating temperature DKN302C 402C 602C 412C 612C 812C 260 C DKN912C 210 C may not be reached under low external temperatures if source voltage is below 115V DKN302C 402C 602C 220V DKN412C 612C 812C 912C 9 Secure unit on installation surface Unit may tip over or fall causing injury or death during an earthquake or other unforseen incident Be sure to stabilize unit properly...

Страница 12: ...ower cable bundled or tangled and do not modifiy bend forcibly twist or pull on power cable Doing so may cause fire and or electrical shock Do not risk damage to power cable by positioning it under desks or chairs or by allowing it to be pinched between objects Doing so may cause fire and or electrical shock Do not place power cable near kerosene electric heaters or other heat generating devices D...

Страница 13: ...10 3 COMPONENT NAMES AND FUNCTIONS Main Unit DKN302C 402C 412C 602C 612C Rear view Exhaust ports Power cable DKN412C 612C Main Circuit Breaker MCB ...

Страница 14: ...11 3 COMPONENT NAMES AND FUNCTIONS Main Unit DKN812C Rear view Exhaust ports Power cable Main Circuit Breaker MCB ...

Страница 15: ...12 3 COMPONENT NAMES AND FUNCTIONS Main Unit DKN912C Rear view Exhaust ports Power cable Main Circuit Breaker MCB ...

Страница 16: ...Illuminates when heater is on and drawing power 9 ALARM Indicator Lamp Illuminates when an error occurs accompanying alarm tone sounds 10 AUTO STOP Indicator Lamp Illuminates while Auto Stop operation is in progress Flashes while setting Quick Auto Stop or Auto Stop modes 11 AUTO START Indicator Lamp Illuminates while Auto Start operation is in progress Flashes while setting 12 FIXED TEMP Indicato...

Страница 17: ...timer settings PrG3 Signifies which program is being set Appears when selecting which program to use 1 2 or 3 See Programmed Operation P 26 PAt Signifies program pattern Appears when selecting a program pattern See Programmed Operation P 26 End Signifies end of a timed operation Appears when a timed operation is completed See pgs 19 23 Sv 1 Signifies which step temperature is being set Appears whi...

Страница 18: ...Appears while entering offset temperature values See Calibration Offset P 34 oH Signifies overheat prevention setting mode Appears while setting activation temperature for overheat prevention device See Overheat Prevetion Device Setup P 19 Lock Signifies that keypad is locked Appears while control panel keypad is locked See Keypad Lock P 35 ...

Страница 19: ... TIMER key displays AStp The temperature Sv is set by pressing the ENTER key The operation time tim is set by pressing ENTER again Pressing the RUN STOP key begins operation in auto stop mode Operation automatically terminates when timer reaches 0 00 22 4 Auto Start Mode This operation is used to automatically begin an operation after a specified period has passed Pressing the TIMER key displays A...

Страница 20: ... 5 seconds then back on again manual reset 2 Calibration offset Calibration offset function is to compensate for differences in the temperature reading as taken by unit sensor and actual chamber temperature as taken manually with a thermograph Unit can be offset to either the positive or negative side of temperature line for entire temperature range of unit 34 3 Overheat prevention temperature cal...

Страница 21: ...18 4 OPERATION PROCEDURES Mode Function Flow The following chart illustrates the flow of modes and functions ...

Страница 22: ... breaker MCB Default values are displayed for about four seconds Turn on power Displays will show initial settings Current chamber temperature top main temperature setting center and temperature setting for overheat prevention device bottom will show in respective displays 2 Set temperature for overheat prevention Press the SUBMENU key Press the several times until is shown in the top display Pres...

Страница 23: ...ting constant or FIX temperature mode in center display 3 Set temperature Center display shows indicating temperature can be set Current temperature will flash in top display FIXED TEMP lamp also flashes Set temperature using the keys 4 Start operation Press the RUN STOP key for about one second Unit will begin operation and FIXED TEMP lamp will change from flashing to constant to indicating that ...

Страница 24: ... FIXED TEMP and AUTO STOP lamps will illuminate indicating quick auto stop operation mode has started To manually stop terminate quick auto stop operation Operation stops automatically when timer reaches 0 00 and an accompanying alarm sounds for approximately five seconds after operation terminates Center display will show indicating end of operation with FIXED TEMP and AUTO STOP lamps illuminated...

Страница 25: ...setting flashes in center display AUTO STOP lamp also flashes Set temperature using keys Press the ENTER key again Top display will show indicating that timer can be set Current timer setting will flash in center display Set timer using the keys Timer function Maximum setting for timer is 999 hours and 50 minutes The time can be set in increments of one minute under 99 hours and 59 minutes Setting...

Страница 26: ...will return to initial settings screen Editing or confirming settings Changing temperature setting or timer setting during operation can be done by pressing the TIMER key Use the keys to change the setting values Press the ENTER key when changes have been entered as desired Press the key at any time thereafter to see temperature setting operation mode and remaining time in the center display Note ...

Страница 27: ...hes in the center display AUTO START lamp also flashes Set temperature using the keys Press the ENTER key again Top display shows indicating the timer can be set Current timer setting will flash in the center display Set timer using the keys Timer function Maximum timer setting is 999 hours and 50 minutes The time can be set in increments of one minute under 99 hours and 59 minutes Setting increme...

Страница 28: ...rming settings Changing temperature settings or timer settings before an operation begins may be done by pressing the TIMER key Use the keys to change setting values Press the ENTER key when changes have been entered as desired These values cannot be modified once operation begins This can only be done by pressing the RUN STOP key to terminate operation and setting the values over again NOTE Press...

Страница 29: ...ering Using the program planning worksheet on pages 32 and 33 is recommended Determine temperature rise fall capability of unit Times must be set to accommodate these capabilities For example if unit is capable of increasing or decreasing temperature by 50 C in 15 minutes approximately 30 minutes will be needed to increase or decrease temperature by 100 C from a given temperature Confirm that the ...

Страница 30: ...r bulding programs 1 Turn on main circuit breaker MCB ON Initial values will be shown for about 4 seconds after power on then displays will switch to the initial settings screen showing current chamber temperature top operation mode character center and overheat prevention setting bottom 2 Select program mode program pattern Press the PROGRAM key once The top display will show previously used prog...

Страница 31: ...ter a program using PrG3 4 Enter program Select PrG3 according to step 2 above Enter the number of steps temperature and time for each step use the program planning worksheet on pages 28 29 Press the ENTER key Pat1 will show flashing in top display End is shown if PrG1 is selected In this case go to Select an unused pattern from among Pat1 Pat2 and Pat3 using the keys Press the ENTER key End will ...

Страница 32: ...lay Enter temperature and time using the same procedure decribed thus far for all steps use the program planning worksheet on pages 32 33 When the repeat function becomes necessary press the SUBMENU key after setting timer step 7 in the above example in the step where repeat operation is to be used This brings up repeat function setting mode Follow Pattern Repeat Function P 31 for program repeat f...

Страница 33: ...s will advance rapidly Press repeatedly for incremental adjustment Editing or confirming settings Press the FIXED TEMP key to edit a program confirm setting values or return to a previous step Display will return to editing and confirmation screen For each time FIXED TEMP key is pressed screen will go back one step Note Editing and confirmation must be done on program setting screen Wait status in...

Страница 34: ...venth step Step numbers 1 to 7 can be entered into the center display Enter the number 1 in the example using the keys Press the SUBMENU key Top will show Pc_x indicating the number of times to repeat Enter this value 2 in the example into the center display with the keys Screen proceeds to the next step when the SUBMENU key is pressed again Sv_8 would be displayed next in the case of example abov...

Страница 35: ... this manual Please make copies Input into PrG1 PrG2 PrG3 PAt1 PAt2 PAt3 No Project Name Date Programmer Program Pattern 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 80 C 75 C 70 C 65 C 60 C 55 C 50 C 45 C 40 C 35 C 30 C 25 C Step No ...

Страница 36: ...No Project Name Date Programmer Input Value Temperature Time min Repeat Function Point of return number of times Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Step 9 Step 10 Step 11 Step 12 Step 13 Step 14 Step 15 Step 16 Step 17 Step 18 Step 19 Step 20 Step 21 Step 22 Step 23 Step 24 Step 25 Step 26 Step 27 Step 28 Step 29 Step 30 ...

Страница 37: ...ue that brings temperature display top display and chamber temperature into agreement using the keys and press the ENTER key up to 99 or 99 in either direction of 0 Setting calibration offset to the negative side of 0 increases actual temperature by the negative value entered i e entering a value of 3 increases actual temperature by 3 C Setting calibration offset to the positive side of 0 decrease...

Страница 38: ...ss the SUBMENU key Select indicating key lock function using the and press the ENTER key Center display will read oFF The the keys are locked when On is selected using the key To cancel the lock press the SUBMENU key again Select using the keys and press the ENTER key Select oFF with the key then press the ENTER key to cancel the function With the keypad lock function ON all keys become unresponsi...

Страница 39: ...e may result In addition unit may become unstable and tip over or fall resulting in equipment damage serious injury or death 2 DO NOT operate equipment during thunderstorms In the event of a thunderstorm turn off main circuit breaker MCB and disconnect power cable immediately A direct lightning strike may cause equipment damage fire or electric shock resulting in serious injury or death 3 Caution ...

Страница 40: ...may also compromise silicon rubber door seal Do not process corrosive substances or items containing corrosive substances 7 ALWAYS run equipment within specified temperature range Operational temperature range for DKN C series units is 0 260 C DKN912C is 0 210 C Never attempt to operate unit outside of the above specified temperature range Doing so may cause equipment malfunction or damage ...

Страница 41: ...perature may become excessive causing malfunction or damage Always use the included racks supported on the standard rack pegs and avoid placing any items on bottom surface DO NOT remove screws from bottom most rack 10 Power loss recovery In the event of a power loss unit automatically reverts to status just before power loss and begin operation once again from that point 11 Stacking When stacking ...

Страница 42: ... units Perform inspections and maintenance when inside of chamber is at room temperature Never attempt to disassemble unit Caution Clean unit using soft damp cloth Never use benzene paint thinner scouring powder scrubbing brush or other abrasives and solvents to clean unit Superficial damage and or discoloration as well as deformity to some components may result ...

Страница 43: ... it may be unattended or in a location where children may have access Dispose of this unit in accordance with local laws and regulations Disposal Considerations Dispose of or recycle this unit in a responsible and environmentally friendly manner Yamato Scientific Co Ltd strongly recommends disassembling unit as far as is possible in order to separate parts and recycle them in contribution to prese...

Страница 44: ...sor interrupted disconnected or other malfunction Contact original dealer of purchase Short circuit detected Alarm lamp on in display Short circuit in SSR solid state relay Contact original dealer of purchase Heater interruption detected Alarm lamp on in display Heater interrupted or disconnected Current detection element interrupted disconnected or other malfunction Contact original dealer of pur...

Страница 45: ...range is 5 C 35 C Whether chamber is overloaded too many samples Temperature fluctuates during operation Whether temperature setting is appropriate Whether power supply voltage has dropped Whether there are large fluctuations in external temperature Whether chamber is overloaded too many test samples Temperature reading differs from manually gauged temperature Overheat prevention device activates ...

Страница 46: ... all repairs Model name Serial Number Date year month day of purchase Description of problem in as much detail as possible Guaranteed Supply Period for Repair Parts Guaranteed maximum supply period for repair parts is 7 seven years from date of discontinuation for DKN C series ovens Repair parts is defined as components which when installed allow for continued unit operation Refer to serial no and...

Страница 47: ...play green 4 digit digital LED Temperature setting display orange 4 digit digital LED Timer 1min 99hrs 59min or 100hrs 999 5hrs wait function included res 1 or 10min Operation modes Fixed temperature Quick Auto Stop Auto Stop Auto Start Program Program operation 3 patterns 30 steps in program mode repeat function included Sensor K thermocouple Additional functions Lock function Auto recovering aft...

Страница 48: ... Mark Location requirements Indoor use only contamination level 2 elevation below 2 000m EN61010 1 Weight Approx 35kg Approx 50kg Approx 65kg Approx 110kg Approx 190kg Included items Chamber racks load capacity 15kg rack 2 4 8 Rack supports 4 8 16 Instruction manual warranty card 4 caster holders DKN812C 912C only 1 Performance data above based on 115V or 220V AC supplied power 23 C 5 C room tempe...

Страница 49: ... Diagram Symbol Glossary Symbol Component Symbol Component MCB Main Circuit Breaker CONT Control Circuit Board TM1 Terminal Block PIO Display Circuit Board H Heater TH1 Temperature Sensor X1 Main Relay TH2 OverheatPreventionSensor FM Circulation Fan Motor CT Current Detection Element SSR Solid State Relay TM2 Option Terminal Block X2 Option Relay MCB ...

Страница 50: ...iagram Symbol Glossary Symbol Component Symbol Component MCB Main Circuit Breaker CONT Control Circuit Board TM1 Terminal Block PIO Display Circuit Board H Heater TH1 Temperature Sensor X1 Main Relay TH2 OverheatPreventionSensor FM Circulation Fan Motor CT Current Detection Element SSR Solid State Relay TM2 Option Terminal Block X2 Option Relay MCB ...

Страница 51: ...agram Symbol Glossary Symbol Component Symbol Component MCB Main Circuit Breaker CONT Control Circuit Board TM1 Terminal Block PIO Display Circuit Board H Heater TH1 Temperature Sensor X1 Main Relay TH2 OverheatPreventionSensor FM Circulation Fan Motor CT Current Detection Element SSR Solid State Relay TM2 Option Terminal Block X2 Option Relay ...

Страница 52: ... Glossary Symbol Component Symbol Component MCB Main Circuit Breaker CONT Control Circuit Board TM1 Terminal Block PIO Display Circuit Board H1 2 Heater TH1 Temperature Sensor X1 Main Relay TH2 OverheatPreventionSensor FM1 Right Fan Motor CW CT Current Detection Element FM2 Left Fan Motor CCW X2 Option Relay SSR Solid State Relay TM2 Option Terminal Block ...

Страница 53: ... 2140000032 X1 Relay AHE1254 100 120V Panasonic 2050000019 Power cable FJCU15A P 3 Yamato Scientific LT00037616 Cable strain relief boot SR 7W 2 Heiko A0036 DKN402C Only Symbol Component Standard Manufacturer Part No H Heater SUS tube heater 1 2kW Yamato Scientific LT00020598 FM Motor IC8422YAMC 10W C C W Yamato Scientific 2140000032 X1 Relay AHE1254 100 120V Panasonic 2050000019 Power Cable FJCU1...

Страница 54: ... SR 8P 2 Heiko FM374 DKN812C Only Symbol Component Standard Manufacturer Part No H1 2 Heater SUS tube heater 1 5kW Yamato Scientific LT00022052 FM Motor IC8434YAMC 30W C C W Yamato Scientific 2140000037 X1 Relay AHE1255 220V Panasonic 2050000044 Power cable STO 14 3 3 Yamato Scientific LT00037617 Cable strain relief boot SR 8P 2 Heiko FM374 DKN912C Only Symbol Component Standard Manufacturer Part ...

Страница 55: ...um Perchlorate Sodium Perchlorate Ammonium Perchlorate and other perchlorates Potassium Peroxide Sodium Peroxide Barium Peroxide and other inorganic peroxides Potassium Nitrate Sodium Nitrate Ammonium Nitrate and other nitrates Sodium Chlorite and other chlorites Calcium Hypochlorite and other hypochlorites Flammable Substances Ethyl Ether Gasoline Acetaldehyde Propylene Chloride Carbon Disulfide ...

Страница 56: ...y mandated by this manual Doing so may result in equipment malfunction serious personal injury or death Notice Instruction manual descriptions and specifications are subject to change without notice Yamato Scientific Co Ltd will replace flawed instruction manuals pages missing pages out of order etc upon request Instruction Manual Forced Convection Oven DKN302C 402C 602C 412C 612C 812C 912C First ...

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