Constant Temperature Drying Oven Model DX302/402/602 Fourth edition ● Thank you very much for purchasing this Yamato DX series constant temperature drying oven. ● Please read the “Operating Instructions” and “Warranty” before operating this unit to assure proper operation. After reading these documents, be sure to store them securely together with the “Warranty” at a handy place for future reference.
Table of Contents 1. Safety precautions ........................................................................................................................1 Explanation of pictograms................................................................................................................1 List of symbols .................................................................................................................................2 Warning・Cautions ...............................................
1. Safety precautions Explanation of pictograms About pictograms A variety of pictograms are indicated in this operating instruction and on products to assure safe operation. Possible results from improper operation ignoring them are classified as follows. Be sure to fully understand the descriptions below before proceeding to the text.
1.
1. Safety precautions Warning・Cautions Warning Never operate the unit in an atmosphere containing flammable or explosive gas Never operate the unit in an atmosphere containing flammable or explosive gas. Otherwise, an explosion or a fire may result since the unit is not explosion-proof. See section “Never operate the unit in an atmosphere containing flammable or explosive gas. Otherwise, an explosion or a fire may result since the unit is not explosion-proof.” See section “13.
2. Before operating the unit Precautions when installing the unit 1. Carefully select an installation site. Take special care not to install the unit at a place described below: ・On uneven or dirty floor ・Where combustible gas or corrosive gas exists ・Where the ambient temperature is 35°C or more ・Where temperature fluctuates widely ・Where dust or humidity is excessive ・Where subject to direct sunlight ・Where vibration is severe Install this unit at a place with spaces shown below.
2. Before operating the unit Precautions when installing the unit 3. Never use the unit with an explosive material, a flammable material or a material containing them. Never use the unit with an explosive material, a flammable material or a material containing them. An explosion or a fire may result. Explosive substance Combustible material 4. Do not alter the product. 5. Install the unit on a level surface The user shall never attempt to alter the unit since it may cause a malfunction.
2. Before operating the unit Precautions when installing the unit 6. Do not overload shelves. 7. Do not place too many samples. Withstand load of each shelf board is 15kg in uniform loading. Place samples in a dispersed fashion. Too many samples may prevent proper temperature control. Be sure to use shelf boards and place samples apart each other so as to make free space of 30% or more to assure proper temperature accuracy. Sample 15kg Shelf board Make at least 30% of space 8.
2. Before operating the unit Precautions when installing the unit 10. Always operate the unit with the vent holes open. Do not cover the vent holes on the top panel of the unit. Adjust the open amount according to the water content of a specific sample. Adjust according to water content 11. Be sure to connect the power plug to the dedicated power distribution panel or a wall outlet. Use a power distribution panel or a wall outlet that meets the electrical capacity of the unit.
2. Before operating the unit Precautions when installing the unit 12. Handling of a power cord Never use electrical power cords bundled. When these are used bundled, they might overheat causing a fire. Do not convert, forcibly bend, twist or pull the power cord. Otherwise, a fire or an electrical shock may result. Do not place the power cord under a desk or a chair, or sand between objects to avoid it from being damaged. Otherwise, a fire or an electrical shock may result.
3.
3. Names and functions of parts Operation panel MEASURED TEMP. ⑥ ⑤ ℃ ④ ⑦ HEATER RUN SET TEMP. ③ RUN STOP TIMER ① SUBMENU ② No. Name Operation/action ① RUN/STOP key Used for starting/stoping operation. ② ▼▲ keys Used for selecting settings. ③ TIMER key Key for selecting timer operation settings. Quick auto stop operation, auto stop operation or auto start operation can be selected.
3. Names and functions of parts Explanation of characters Characters on the controller are explained in this section. Characters Identifier Name Application AStP Auto stop setting Used for setting auto stop operation. AStr Auto start setting Used for setting auto start operation. Displayed when timer operation has End Time up ended. See pages 17 and 19.
4. Operating procedures List of operation modes and functions Operation modes of the unit are as shown below: № Name Description Page Turning the ELB on to enter the operation setting mode. 1 Fixed temperature Proceed to temperature setting that uses ▼▲ keys. operation Pressing the RUN/STOP key longer to start operation, and P.16 pressing the RUN/STOP key longer again to stop operation. Used when you want to “stop fixed temperature operation being performed automatically in several hours.
4. Operating procedures List of operation modes and functions Functions of the unit are as shown below: Name № Description Page Automatic overheat prevention function: This function is linked to the unit set temperature and has been set to so that it is automatically activated (returned automatically) at a temperature 12℃ higher than the set temperature in the bath. 1 Overheat prevention function Standalone overheat protection device (Thermostat)： When the temperature in the bath reaches the set P.
4. Operating procedures Operation mode・function setting keys and characters Key operations and characters in the diagram below are used for operation mode and function settings. ELB ON Fixed temp. operation Function setting Timer operation Long press TIMER SUB MENU Temperature setting Setting lock function Power outage compensation function AStr cAL LocK Pon Time setting Compensation setting Lock setting Power outage compensation setting Auto stop Auto start Fixed temp.
4. Operating procedures Operating procedures (settings for Standalone overheat prevention device (Thermostat)) As a safety measure for preventing overheat, a standalone overheat prevention device (Thermostat) hydraulic overheat prevention device (manual return) is installed. Temperature setting range and functions The temperature setting range for the standalone overheat prevention device (Thermostat) is “50 ～ 350 .
4. Operating procedures Operating procedures (fixed temperature operation) How to start fixed temperature operation 1.Turn the ELB ON. (Turn the ELB to “ON.”) When the ELB is turned ON, the intial values will be displayed for about four seconds, then the initial screen will appear and the current bath temperature and the previous set temperature are displayed on each of the indicators. MEASURED TEMP.
4. Operating procedures Operating procedures (quick auto stop operation) Used when you want to “stop fixed temperature operation being performed automatically in several hours. Quick auto stop operation is a function to enable auto stop timer setting during operation. Procedures for quick auto stop operation 1. Setting time period before stop during fixed temperature operation ① Make sure that the RUN lamp is illuminated to indicate the unit is in operation. MEASURED TEMP. ℃ HEATER RUN SET TEMP.
4. Operating procedures Operating procedures (quick auto stop operation) When you want to correct set When you want to change settings, press the ▼▲ keys on the current screen to enter the setting mode where you can temperature or set time, or change settings. Blinking stops three seconds after three change settings seconds after change and setting is completed. Note, however, that temperature changes after timer activation are counted also while temperature is changing.
4. Operating procedures Operating procedures (auto stop operation) This mode automatically stops fixed temperature operation after a certain time from its start set with the timer. Procedures for auto stop operation MEASURED TEMP. ℃ 1. Setting a stop time ① After confirming the temperature you want is set, Press the TIMER key to display characters AStP on the measured temperature screen that indicate auto stop operation. The set time is displayed on the set temperature HEATER RUN SET TEMP.
4. Operating procedures Operating procedures (auto stop operation) When you want to correct set When you want to change settings, press the ▼▲ keys on the current screen to enter the setting mode where you can temperature or set time, or change settings. Blinking stops three seconds after three change settings seconds after change and setting is completed. Note, however, that temperature changes after timer activation are counted also while temperature is changing.
4. Operating procedures Operating procedures (auto start operation) This mode automatically starts fixed value operation after a certain time from its start set with the timer. However, operation does not stop automatically but needs to be stopped manually. Procedures for auto start operation MEASURED TEMP. ℃ HEATER 1.
4. Operating procedures Operating procedures (auto start operation) When you want to correct set temperature or set time, or change settings When you want to change the set temperature during timer counting, press the ▼▲ keys during that status to switch the set temperature screen to the set temperature input mode, which blinks to enable change of the set temperature with the ▼▲ keys.
4. Operating procedures Useful functions (calibration offset function) Using the calibration offset function Calibration offset function compensates any differences between the target temperature in the bath and the control temperature of the controller (sensor temperature.) The function can compensate in parallel to either plus or minus side for the whole temperature band of the unit. The lock can be set or released with the SUB MENU keys. The temperature is set at “0” on shipping from the factory.
4. Operating procedures Useful function (setting lock function) Using the lock function This function locks the set operation status. The temperature is set at “off” on shipping from the factory. ① Press the TIMER key (SUB MENU key) long to enter the sub menu mode. MEASURED TEMP. ℃ HEATER RUN SET TEMP. RUN TIMER Press the TIMER key (SUB MENU key) several times to select the characters Lock setting lock function. that indicate the STOP SUB MENU ③ “Off” is displayed on the set temperature screen.
4. Operating procedures Useful function (power outage compensation function) Using the power outage compensation function The power outage compensation function returns the main unit operation to the resume status after recovery from power outage, or keeps the current stop status. The function is set at “on” on shipping from the factory. ① Press the TIMER key (SUB MENU key) long to enter the sub menu mode. MEASURED TEMP. ℃ HEATER RUN SET TEMP.
5. Cautions on handling Warning 1. About handling of flammable or combustible solution The unit is not explosion proof. Take special care for handling samples on which explosive substances, combustible substances or substances containing them. Flammable or combustible solution will evaporate when left at a room temperature (or at a lower temperature for some types of solutions) and may be ignited and explode from switches, lights and other ignitable sources.
5. Cautions on handling Caution 6. Prohibition of use of corrosive samples Although SUS304 stainless steel is used for components in the bath, note that they might corrode with strong acid. Door packing is made of silicon rubber. Note that silicon rubber packing may corrode with acid, alkali, oil or halogen-based solvent. 7. Always operate the unit at a correct ambient temperature. Operational temperature range for the model DX302/402 is room temperature +5℃～ 300℃;DX602 room temperature +5℃～280℃.
6. Maintenance procedures Daily inspection/maintenance Be sure to perform daily inspection and maintenance to assure reliable operation of the unit. Warning ● Be sure to pull out the power cord unless necessary before trying to do inspection and maintenance works. ● Start these works after the device has returned to the normal temperature. ● Never try to disassemble the unit. Caution ● Wipe off any dirt with a tightly wrung soft cloth.
7. When the unit is not to be used for a long time or when disposing When the unit is not to be used for a long time or when disposing Caution Warning When the unit is not going to be used for a long When disposing the unit time ● Do not leave the unit in the area where ● Turn the ELB to off and pull out the power children may have access. ● Be sure to remove handles before disposing cord. the unit to prevent the doors from locking. ● In general, dispose the unit as a bulky waste.
8. Troubleshooting Safety device and error codes The unit has the self diagnostic function with a controller and a separate safety device. Table below shows possible causes and measures when the safety device is triggered. [Error codes] When a functional or mechanical abnormality occurs, an error code will be displayed on the control panel. When an abnormality occurs, confirm the error code and immediately stop operation.
8. Troubleshooting When a malfunction is suspected If any of the symptoms below occurs Symptom Turning the ELB to on will not activate the unit. Temperature does not rise. Check ● If the power cord is connected to the power supply securely. ● If power outage is not occurring. ● If the standalone overheat prevention device is working. ● If the set temperature is below that in the device. ● If the power supply voltage has declined. ● If the ambient temperature is not low.
9. After sales service and warranty When requesting a repair When requesting a repair If any trouble occurs, immediately stop operation, turn the ELB off, pull out the power plug and contact your dealer or our sales office. Information necessary for requesting a repair ◆Model name of the product ◆Serial number ◆Date (y/m/d) of purchase Confirm on the warranty card or the nameplate installed on the unit. See the section”3.
10. Specifications DX302 Model Performance Mechanism Control assembly Safety device Standard Exhaust port 40℃～280℃ At no load and at an ambient temperature of 23℃ Temperature control precision Temperature rise time DX602 40℃～300℃ Temperature control range Temperature distribution precision DX402 ±1℃（setting: 300℃, exhaust port fully opened） ±10℃ ±10℃ (setting: 280, exhaust port (setting: 300, exhaust port fully opened) fully opened) Approx. 45 minutes Approx. 60 minutes Approx.
11.
12. List of replacement parts Common parts Symbol TH1 CONT PIO - Part name Temperature sensor Code No. 1-16-003-0049 Specifications Manufacturer LCK-M1-2000Y K single Yamato Planar board LT00007640 CN40B-Y Yamato Display circuit board LT00007639 CN40B-Y Yamato 50 ㎜ Yamato Tough card 1-13-000-0009 X1 Relay LT00032865 X2 Relay 2-05-008-0002 AP3124K Matsushita SSR SSR 2-16-000-0035 TRS5255 Toho LT00008924 2.
13. List of dangerous materials Never use an explosive substance a flammable substance or a substance containing Explosive substance Explosive substances Explosive substance them for this device.
14. Standard installation manual * Install the product according to the following: (Confirm separately for optional items or special specifications) Model № Serial number Item Installation mgr. (company name) Date Implementation method Installation mgr. TOC No. Reference page of the operating instruction manual Specifications Check for number of staffs against 10. Specifications field the included item field ・ Visual check of environmental 2.
Limited liability Be sure to use the unit strictly following the handling and operating instructions in this operating instruction. Yamato Scientific Co., Ltd. assumes no responsibility for an accident or a malfunction caused by use of this product in any way not specified in this operating instruction. Never attempt to perform matters prohibited in this operation instruction. Otherwise, an unexpected accident may result.
