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Forced Convection 

Constant Temperature Drying Oven 

Model 

DKN 302/402/602 

612/812/912

 

Instruction Manual 

 

- First Edition -

 

 

Yamato Scientific Co. LTD.

 

z

 Thank you for purchasing "Forced Convection 

Constant Temperature Drying Oven, DKN 
Series" of Yamato Scientific Co., Ltd. 

z

 To use this unit properly, read this "Instruction 

Manual" thoroughly before using this unit. 
Keep this instruction manual around this unit for 
referring at anytime. 
 

WARNING!: 

Carefully read and thoroughly understand the 
important warning items described in this 
manual before using this unit.

Summary of Contents for DKN 012

Page 1: ...rced Convection Constant Temperature Drying Oven DKN Series of Yamato Scientific Co Ltd z To use this unit properly read this Instruction Manual thoroughly before using this unit Keep this instruction manual around this unit for referring at anytime WARNING Carefully read and thoroughly understand the important warning items described in this manual before using this unit ...

Page 2: ......

Page 3: ...haracters 16 Setting of Overheating Prevention Device 17 Fixed Temperature Operation 18 Quick Auto Stop Operation 19 Auto Stop Operation 20 Auto Start Operation 22 Program Operation 24 Other Functions 31 Handling Precautions 32 Maintenance Method 34 Daily Inspection and Maintenance 34 Long storage and disposal 35 When not using this unit for long term When disposing 35 In the Event of Failure 36 S...

Page 4: ......

Page 5: ...nger of a problem that may cause a serious accident or even fatality CAUTION If the caution is ignored there is the danger of a problem that may cause injury damage to property or the unit itself Meaning of Symbols This symbol indicates items that urge the warning including the caution A detailed warning message is shown adjacent to the symbol This symbol indicates items that are strictly prohibit...

Page 6: ...aution electrical shock Caution scald Caution no road heating Caution not to drench Caution water only Caution deadly poison Prohibit Prohibit generally Prohibit inflammable Prohibit to disassemble Prohibit to touch Compulsion Compulsion generally Compulsion connect to the grounding terminal Compulsion install on a flat surface Compulsion disconnect the power plug Compulsion periodical inspection ...

Page 7: ...e it is dangerous and not recommended Do not use the power cord if it is bundled or tangled Do not use the power cord if it is bundled or tangled If it is used in this manner it can overheat and fire may be caused Do not process bend wring or stretch the power cord forcibly Do not process bend wring or stretch the power cord forcibly Fire or electrical shock may result Substances that can not be u...

Page 8: ... ground for telephone wire or lightning conductor If not fire disaster or electric shock may be caused Do not use a branching receptacle which may cause the heat generation 2 Choose a proper place for installation Do not install this unit in a place where Rough or dirty surface Flammable gas or corrosive gas is generated Ambient temperature exceeds 35 C Ambient temperature fluctuates violently The...

Page 9: ... Never use this unit in an area where there is flammable or explosive gas This unit is not explosion proof An arc may be generated when the power switch is turned ON or OFF and fire explosion may result Never use explosive substances flammable substances and substances that include explosive or flammable ingredients in this unit Explosion or fire may occur Flammable substance ...

Page 10: ...expectible trouble or malfunction CAUTION 6 Do not make an overload 7 Do not set samples in close formation The withstand load of shelf is 15kg uniform load Set the samples apart each other The temperature in furnace cannot be controlled if too much samples are set there Make sure to use the shelf and set samples apart each other so as to make the free space of 30 or more to the furnace to acquire...

Page 11: ...may cause a burn during and just after the operation To prevent take measures that putting up a notice of operating etc Make sure to lock the caster for DKN812and DKN912 types 10 Setting of the shelf and sample D The number of shelves attached varies depending on the type of product 2 to 8 One of them two for DKN912 is previously fixed on the lowermost stand of bracket supporter with screws at fac...

Page 12: ...prevent it from being damaged and to avoid a fire or electrical shock Keep the power cord away from any heating equipment such as a room heater The cord s insulation may melt and cause a fire or electrical shock If the power cord becomes damaged wiring exposed breakage etc immediately turn off the power at the rear of this unit and shut off the main supply power Then contact your nearest dealer fo...

Page 13: ...d Function of Each Part Main Unit DKN302 402 602 612 DKN612のみ Front view Rear view Main switch Earth leakage breaker Door Door handle Production plate Control panel Power cord Exhausted opening Cable port Glass window ...

Page 14: ...10 Description and Function of Each Part Main Unit DKN812 Door Front view Rear view Main switch breaker Door handle Production plate Control panel Power cord Exhausted opening Caster Cable port ...

Page 15: ...Description and Function of Each Part Main Unit DKN912 Door Front view Rear view Main switch Earth leakage breaker Door handle Production plate Control panel Power cord Exhausted opening Caster Cable port ...

Page 16: ...nks while setting quick auto stop timer or auto stop timer Lights while quick auto stop timer or auto stop timer is running AUTO START Lamp Blinks while setting auto start timer Lights while auto start timer is running FIXED TEMP Lamp Blinks while setting fixed temperature operation Lights while fixed temperature operation is running PROGRAM Lamp Blinks while setting program operation Lights while...

Page 17: ...ogram Operation Sv 1 Program Temperature Setting Used for setting the temperature for each step in the program Sv 1 to Sv 30 is shown t 1 Program Time Setting Used for setting the time for each step in the program t 1 to t 30 is shown PS 3 Step Number to be Repeated Used for choosing the step number to be repeated under the program operation with repeat function Refer to Page 28 Use program repeat...

Page 18: ... temperature operation Pressing the TIMER key displays ASｔp The setting temperature SV can be set by pressing the ENTER key The operation time tim can be set by pressing it again Pressing the START STOP key starts the auto stop operation 20 4 Auto Start Operation This operation is used to specify the period up to automatic start after power on Pressing the TIMER key displays ASｔr The setting tempe...

Page 19: ...ain when the POWER switch is pressed again manual reset 17 2 Calibration offset function This calibration offset function is for calibrating the difference occurred between the required in furnace temperature and control temperature sensor temperature of the controller This unit can be calibrated toward either plus side or minus side of the whole temperature range 31 3 Overheating prevention tempe...

Page 20: ...16 Operation Method Operation Mode Function Setting Key and Characters The operation mode setting and function setting use the key operation and characters show in the following figure ...

Page 21: ...he current temperature in furnace operation mode character and setting temperature of overheating prevention device are displayed on respective screens 2 Set the temperature for overheating prevention Press the SUBMENU key Press the several times to select the setting character of overheating prevention temperature OH Press the ENTER key The current setting temperature is displayed with blinking o...

Page 22: ...e setting Also it displays the current setting temperature with blinking The FIXED TEMP lamp blinks too Set the temperature by pressing the 4 Start operation Press the orange START STOP key for about one second The unit starts operation and the blinking FIXED TEMP lamp lights on 5 Stop operation Press the orange START STOP key for about one second The unit stops operation and the FIXED TEMP lamp l...

Page 23: ...ustment is needed 2 Start timer operation Press the START STOP key for one second after deciding the time Timer operation starts with the FIXED TEMP and AUTO STOP lamps lighting on The timer is activated at the point when the START STOP key is pressed 3 Stop terminate timer operation The operation stops automatically at setting time Buzzer continues to sound for about five minutes at operation sto...

Page 24: ...ss the ENTER key again The measurement temperature display screen displays the character tim which indicates the timer setting The setting temperature display screen displays the current setting time with blinking Set the time using the Timer function The maximum setting time is 999hours and 50 minutes The time can be set in increments of a minute under 99 hours and 59 minutes It can be set in inc...

Page 25: ...th the FIXED TEMP and AUTO STOP lamps lighting on Press the START STOP key to terminate the timer operation mode The screen returns to the initial setting screen To correct or check setting Changing the setting temperature or time during operation is possible by pressing the TIMER key Use the to change the setting value Press the ENTER key respectively after changing the setting Press the to displ...

Page 26: ...UTO START lamp blinks too Set the temperature using the Press the ENTER key again The measurement temperature display screen displays the character tim which indicates the timer setting The setting temperature display screen displays the current setting time with blinking Set the time using the Timer function The maximum setting time is 999 hours and 50 minutes The time can be set in increments of...

Page 27: ...check setting Changing the setting temperature or time during operation is possible by pressing the TIMER key Use the to change the setting value Press the ENTER key respectively after changing the setting They are not changeable after the unit starts operation In this case stop the operation by pressing the START STOP key then set the value again Press the to display the setting temperature opera...

Page 28: ...100 from current temperature Repeat function Repeat function is useful in case the operation uses the program repeating the same program steps Refer to page28 for the function Check if the controller has sufficient free pattern for the number of steps to be created The steps however using the repeat function mentioned above are not counted Temperature fall rise curve for DKN type The temperature f...

Page 29: ...lect program mode program pattern Press the PROGRAM key once The measurement temperature display screen displays the previous program mode Press the PROGRAM key again to display the next program mode Select the mode and press the ENTER key When PrG1 is selected the measurement temperature display screen displays End When PrG2 is selected the measurement temperature display screen displays the prog...

Page 30: ...the temperature rise fall capability of unit For example about 90 minutes is needed to increase the temperature from room temperature to 260 for DKN602 type 60minutes for DKN812 type When the current temperature is supposed to be 25 it takes about 3 minutes to increase the temperature by 1 accordingly takes about 90 minute until it reaches to 260 Add an extra considering the temperature stability ...

Page 31: ...be set in increments of a minute under 99 hours and 59 minutes It can be set in increment of ten minutes over 100 hours The can change the setting time quickly when it is pressed continuously Press them discontinuously when fine adjustment is needed To correct or check setting Press the FIXED TEMP key to correct the created program or to check the setting value The screen returns to the former one...

Page 32: ...emperature screen indicates PS 7 in the example because repeat function is used at the seventh step The step number 1 to 7 can be input in the setting temperature display screen Enter the number 1 in the example using the Press the SUBMENU key The measurement temperature screen displays the character Pc n which indicates the repeating times Enter the value of repeating times 2 in the example with ...

Page 33: ...on Method Program Operation Programming Preparation Form 1 Please use this form by making copies Register with PrG1 PrG2 PrG3 PAt1 PAt2 PAt3 No Date Project Name Programmer Program Pattern 250 200 150 100 50 STEP ...

Page 34: ... PAt1 PAt2 PAt3 No Date Project Name Programmer Input Value Temperature Time min Repeat Function Step 1 To Times 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 ...

Page 35: ...ature display screen falls by the setting temperature while the temperature on furnace rises When it is set to the minus side the temperature on the measurement temperature display screen rises by the setting temperature while the temperature on furnace falls The unit has two point correction function which performs offset between low temperature zone and high temperature zone Please consult our l...

Page 36: ... off the power key immediately then turn off the circuit breaker and the main power If this procedure is not followed fire or electrical shock may be caused When open close door Do not get close to the traveling range of door when opening or closing it It may hit your hands or head and result in an injury Keep door close during operation The heater is heated abnormally if the door is left opened d...

Page 37: ...l cause trouble Never put sample on the base Fix the shelf on the bracket then set sample on it Recovering after power failure When power is supplied after a power failure the device automatically starts operation again with the same state as just before the power failure It is danger that the device starts unattached operation after a power failure We recommend for you to turn off the switch of t...

Page 38: ...intenance after returning the temperature of this unit to the normal one Do not disassemble this unit CAUTION Use a well drained soft cloth to wipe dirt on this unit Do not use benzene thinner or cleanser for wiping Do not scrub this unit Deformation deterioration or color change may result in Monthly maintenance Check the earth leakage breaker function 1 Connect the power cord 2 Turn the breaker ...

Page 39: ...ible and recycle the reusable parts considering to the environmental protection The feature components of this unit and materials used are listed below Component Name Material Exterior Parts Outer covering Steel plate melamine resin coating Furnace Stainless steel SUS304 Heat insulation material Glass wool Door packing Foam silicon rubber Plates PET resin film Electrical Parts Heater SUS pipe heat...

Page 40: ...hort circuit detection ALARM lamp lights on Er 02 appears Triac is in short circuit Make a call for service Heater disconnecting detection ALARM lamp lights on Er 03 appears Heater is disconnected Make a call for service Memory error ALARM lamp lights on Er 15 appears Failure in internal memory Make a call for service Internal communication error ALARM lamp lights on Er 17 appears Failure in inter...

Page 41: ...rature fluctuates during the operation Too much samples Wind from air conditioner directly blows The change of ambient temperature is remarkable Samples are too moist The power supply voltage is lower than the proper value In the case if the error other than listed above occurred turn off the power switch and primary power source immediately Contact the shop of your purchase or nearest Yamato Scie...

Page 42: ...ales office Check following items before contact Model Name of Product Production Number Purchase Date About Trouble in detail as possible Minimum Retention Period of Performance Parts for Repair The minimum retention period of performance parts for repair of this unit is 7 years after discontinuance of this unit The performance part for repair is the part that is required to maintain this unit Se...

Page 43: ...er power failure Calibration offset Self diagnostic functions Failure of Sensor heater SSR memory internal communication temperature inputting circuit automatic overheating prevention device overheating prevention device measurement temperature Safety device Earth leakage breaker Overheating prevention device External dimensions W D H mm 410 451 670 560 601 820 710 651 870 710 651 1675 1 180 651 1...

Page 44: ...LB AC100V 2 5 6 CN9 CN2 1 18 1 18 3 2 1 TB2 2 H TH2 TH1 FM Symbol Part name Symbol Part name ELB Earth leakage breaker CONT Control board TM1 Terminal block PIO Display circuit board H Heater TH1 Sensor for control X Main relay TH2 Sensor for overheating prevention FM Circulation fan CT Current transformer SSR Breakerless relay ...

Page 45: ...C200V 2 5 6 CN9 CN2 1 18 1 18 3 2 1 TB2 2 H TH2 TH1 FM Symbol Part name Symbol Part name ELB Earth leakage breaker CONT Control board TM1 Terminal block PIO Display circuit board H Heater TH1 Sensor for control X Main relay TH2 Sensor for overheating prevention FM Circulation fan CT Current transformer SSR Breakerless relay ...

Page 46: ...1 1 2 PIO CONT 2 5 6 CN9 CN2 1 18 1 18 3 2 1 TB2 2 TH2 TH1 Symbol Part name Symbol Part name ELB Earth leakage breaker CONT Control board TM1 Terminal block PIO Display circuit board H1 H2 Heater TH1 Sensor for control X Main relay TH2 Sensor for overheating prevention FM Circulation fan CT Current transformer SSR Breakerless relay ...

Page 47: ...1 1 2 PIO TH1 CONT 2 5 6 CN9 CN2 1 18 1 18 3 2 1 TB2 2 TH2 Symbol Part name Symbol Part name ELB Earth leakage breaker CONT Control board TM1 Terminal block PIO Display circuit board H1 H2 Heater TH1 Sensor for control X Main relay TH2 Sensor for overheating prevention FM1 FM2 Circulation fan CT Current transformer SSR Breakerless relay ...

Page 48: ...ic LT00006026 DKN611 811 911 Part Name Specification Manufacturer Code No Sensor LCK M１ 2000 Y K single Yamato Scientific 1160030049 VS4 PLANAR board VS4 Yamato Scientific 1020000048 VS4 display circuit board VS4 Yamato Scientific 1020000051 Tough card 50mm Yamato Scientific 1130000009 Main relay AHE1255 200V Matsushita 2050000044 SSR TRS5225 Toho Denshi 2160000035 DKN612 2 0sq 3p Yamato Scientifi...

Page 49: ...um perchlorate and other perchlorate Potassium peroxide Sodium peroxide Barium peroxide and other inorganic peroxide Potassium nitrate Sodium nitrate Ammonium nitrate and other nitrate Sodium chlorite and other chlorites OXIDIZING Calcium hypochlorite and other hypochlorites Ethyl ether Gasoline Acetaldehyde Propylene chloride Carbon disulfide and other flammable substances having a flash point of...

Page 50: ...ocument forbids Unexpected accidents or breakdown may result in Note The contents of this document may be changed in future without notice Any books with missing pages or disorderly binding may be replaced Instruction Manual for Forced Convection Constant Temperature Oven Model DKN302 402 602 612 812 912 First Edition Nov 1 2004 Yamato Scientific Co Ltd 2 1 6 Nihonbashi Honcho Chuo ku Tokyo 103 84...

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