Yamato DVS402 User manual

Constant Temperature
Drying Oven
Model DVS402
DVS602
First edition
●Thank you very much for purchasing this Yamato
DVS 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.
Warning! Before operating the unit, be sure to
read carefully and fully understand
important warnings in the operating
instructions.

Yamato Scientific Co., Ltd.


Table of contents
1. Safety precautions ........................................................................................................................1
Explanation of pictograms...............................................................................................................1
List of symbols.................................................................................................................................2
Warning・Cautions .........................................................................................................................3
2. Before operating the unit..............................................................................................................4
Precautions when installing the unit ................................................................................................4
3. Names and functions of parts ......................................................................................................9
Main body........................................................................................................................................9
Operation panel.............................................................................................................................10
Explanation of characters..............................................................................................................11
4. Operating procedures.................................................................................................................13
List of operation modes and functions...........................................................................................13
Operation mode・function setting keys and characters................................................................15
Settings for overheat prevention device ........................................................................................16
Operating procedures (fixed temperature operation).....................................................................17
Operating procedures (quick auto stop operation) ........................................................................18
Operating procedures (auto stop operation)..................................................................................19
Operating procedures (auto start operation)..................................................................................21
Preparing a program......................................................................................................................23
Program repeat operation..............................................................................................................28
Programming sheet.......................................................................................................................29
Useful functions (calibration offset function)..................................................................................31
Useful function (lock function) .......................................................................................................32
5. Cautions on handling..................................................................................................................33
6. Maintenance procedures ............................................................................................................35
Daily inspection/maintenance........................................................................................................35
7. When the unit is not to be used for a long time or when disposing .......................................36
When the unit is not to be used for a long time or when disposing................................................36
Notes about disposition.................................................................................................................36
8. Troubleshooting ..........................................................................................................................37
Safety device and error codes.......................................................................................................37
When a malfunction is suspected..................................................................................................38
9. After sales service and warranty................................................................................................39
When requesting a repair..............................................................................................................39
10. Specifications ............................................................................................................................40
11. Wiring diagram...........................................................................................................................41
12. List of replacement parts..........................................................................................................42
13. List of dangerous materials......................................................................................................43
14. Standard installation manual....................................................................................................44

1
1. Safety precautions
Explanation of 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.
Warning Indicates a situation which may result in death or serious injury
(Note 1)
Caution Indicates a situation which may result in minor injury (Note 2) and
property damage (Note 3).
(Note 1) Serious injury means a wound, an electrical shock, a bone fracture or intoxication
that may leave after effects or require hospitalization or outpatient visits for a long
time.
(Note 2) Minor injury means a wound or an electrical shock that does not require
hospitalization or outpatient visits for a long time.
(Note 3) Property damage means damage to facilities, devices and buildings or other
properties.
This pictogram indicates a matter that encourages the user to adhere to
warning (“caution” included).
Specific description of warning is indicated near this pictogram.
This pictogram indicates prohibitions
Specific prohibition is indicated near this pictogram.
This pictogram indicates matters that the user must perform.
Specific instruction is indicated near this pictogram.
About pictograms
Meanings of pictograms

2
1. Safety precautions
List of symbols
Warning
General warningsDanger!:
High voltageDanger!: High temperature Danger!: Moving partDanger!:Hazard of explosion
Caution
General cautionsElectrical shock!Burning!Caution for no
liquid heating!Caution for water leak!
For water onlyPoisonous
material
Prohibitions
General bansFire banDo not
disassembleDo not touch
Compulsions
General
compulsionsConnect ground wireInstall levellyPull out the power plugRegular inspection

3
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 “13. List of dangerous materials” on page 43.
Be sure to connect the ground wire.
Be sure to connect the ground wire correctly. Otherwise, electrical leak may result and cause
an electrical shock or a fire.
Ban on operation when an abnormality occurs
When a smoke or a unusual odor is seen or sensed, immediately turn the power switch on the
main unit off and pull out the power cord (plug) from the power supply. A fire or an electrical
shock may result.
Never use electrical power cords bundled.
When these are used bundled, they might overheat causing a fire.
Take care not to damage electrical power cords.
Avoid tightly bend, pull with a strong force or twist to prevent electrical power cords from
damaging. Afire or an electrical shock may result.
Never use an explosive or a flammable material with this unit.
Never use an explosive material, a flammable material or a material containing them. An
explosion or an electrical shock may result.
See section “13. List of dangerous materials” on page 43.
Never try to touch a hot part.
Some parts of the unit are hot during and immediately after operation. Take special care for
possible burning.
Never try to disassemble or alter the unit.
Never try to disassemble or alter the unit. A malfunction, a fire or an electrical shock may
result.
Caution
When a thunder is heard.
When a thunder is heard, turn the main power off immediately. A malfunction, fire or an
electrical shock may result.

4
2. Before operating the unit
Precautions when installing the unit
Warning
1. Be sure to connect the ground wire.
・ Power supply for this product is 100V AC.
・ Be sure to connect the ground wire (green core wire of the power cord) to the ground
wire or the ground terminal in order to prevent an electrical shock from electric leakage.
・ Never connect the ground wire to gas or water pipes. Otherwise, a fire may result.
・ Never connect the ground wire to the ground for telephone wire or lightning conductor.
Otherwise, a fire or an electrical shock may result.
・ Do not use a branching receptacle, which may generate heat and possible danger.
We recommend use of a ground type outlet
tap.
When there is no ground terminal.
●In this case, class 3 grounding work is
necessary and please consult your dealer
or our nearest sales office.
When a bipolar type outlet tap is used
●Insert the ground adaptor included as an
option, into a power plug confirming the
polarity of the outlet. Connect the
grounding wire (green) of the ground
adaptor to the ground terminal on the
power supply equipment.
2. 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℃or more
・Where temperature widely fluctuates
・Where there is excessive dust or humidity
・Where subject to direct sunlight
・Where vibration is severe
Install this unit at a place with spaces shown below.
Do not cover the exhaust ports on the top of the unit.
15 cm
or more15 cm
or more
Front
15 cm ormore
1m or
more
Grounded
tap
Power plug
Bipolaroutlet
tap
Ground wire

5
2. Before operating the unit
Precautions when installing the unit
Warning
3. Never operate the unit in an atmosphere containing explosive or flammable gas
Never operate the unit in an atmosphere containing flammable or explosive gas. Since the
unit is not explosion-proof, an arc is discharged when turning a switch “ON” and “OFF” and
during operation and a fire or an explosion may result.
See the section “13. List of dangerous materials” on page 43 for flammable and explosive
gases.
Never use the unit with an explosive material, a flammable material or a material containing
them. An explosion or a fire may result.
See the section “13. List of dangerous materials” on page 43 for flammable and explosive
substances.
Explosive
gas
Combustible
gas
Explosive
substance
Combustible
substance

6
2. Before operating the unit
Precautions when installing the unit
Warning
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.Fla
t
Install the unit on a level surface.
Installing this unit on a slope might cause
unexpected troubles or malfunctions.

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.
Shelfboard
Sample
15 kg
Make at least 30% of space
Alteration

7
2. Before operating the unit
Precautions when installing the unit
Caution
8. Be sure to connect the power plug to the dedicated wall outlet.
Use a power distribution panel or a wall outlet that meets the electrical capacity of the unit.
DVS402 AC100V 12.5A
Electric capacity: DVS602 AC100V 14A
When the unit will not start even when you turn the power switch to “ON”, check for low
main voltage or if the unit is connected to the same power supply line as other devices and
connect it to another line if necessary.
9. Installation
The unit might fall down or move by an earthquake or an impact resulting a personal injury.
We recommend making safety measures such as to avoid installing the unit at a place
other than busy places.
Also, take appropriate safety measures to prevent the unit from tripping over.
10. Placing shelf boards and samples
Two shelf boards are included with this product.
One of them has been fixed on the lowest stage of the shelf pillar of the internal bath at the
time of shipping from the factory.
Set another board to an appropriate position in the bath.
A heater is installed under the flow adjusting board. Thus, the temperature of the flow
adjusting board and around it is always higher than the set temperature and placing a
sample directly on the board may damage it or cause a fire.
Therefore, the shelf board is fixed with screws as shown to disable direct placement of
samples.
Because of the shape of samples, when the unit is operated with shelf boards removed to
accept them, assure sufficient space between them and the flow adjusting board and never
place samples directly on the flow adjusting board.
Shelf pillar
Flow adjusting
board
Clamp
Screw
Screw
Shelf board

8
2. Before operating the unit
Precautions when installing the unit
Caution
11. About handling of the 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.
Do not place the power cord close to a stove or other heat generating device. Sheath of
the cord may burn and result in a fire or an electrical shock.
If the power cord should be damaged (exposure of core wire or disconnection),
immediately turn the main unit off, pull out the power cord (plug) out of the power supply
and ask your dealer to replace the cord. Otherwise, a fire or an electrical shock may
result.
Connect the power cord to an appropriate wall outlet.
12. When you operate the unit for the first time
When you operate the unit for the first time at a higher temperature, the unit may generate
an odor. This is due to decomposed bonding material contained in heat-insulation
material and is not a malfunction of the unit. We recommend operating the unit at the
highest temperature once before starting its regular operation.

9
3. Names and functions of parts 
Main body
Front view
Rear panel

Control panel
Door
Handle
Main switch
(Earth leakage breaker)
Rating sticker
Power cord
Exhaust port
Cable hole
Observation window

10
3. Names and functions of parts 
Operation panel
MEASURED TEMP.
℃
HEATE
R
ALARM
AUTO STOP
AUTO START
ENTER
SET
TEMP.
OVER TEMP.
PROTECTOR
FIXED TEMP.
RUN
STOP
SUB
MENU
TIMER
FIXED
TEMP. PROGRAM
PROGRAM
No.NameOperation/action
①RUN/STOP keyUsed for starting/stopping operation
②▲▼ keysUsed for selecting settings.
③ENTER keyUsed for determining a selected setting.
④FIXED TEMP. keyKey for selecting fixed temperature operation.
⑤TIMER keyKey for selecting timer operation.
Quick auto stop operation, auto stop operation or auto start
operation can be selected.
⑥PROGRAM keyUsed for selecting programming and starting the program operation.
Programs of six patterns in three types can be set.
⑦SUB MENU keyKey for setting temperature of the overheat prevention device,
calibration offset temperature, the key lock function or the program
repeat function.
⑧HEATER lampIlluminates while heater power is on.
⑨ALARM lampWhen an error occurs, the lamp illuminates with an audible buzzer.
⑩AUTO STOP lampFlashes while the quick auto stop timer is being set and illuminates
while the unit is in operation.
Flashes while the auto stop timer is being set and illuminates while
the unit is in operation.
⑪AUTO START lampFlashes while the auto start timer is being set and illuminates while
the unit is in operation.
⑫FIXED TEMP. lampFlashes while fixed temperature operation is being set and
illuminates while the unit is in operation.
⑬PROGRAM lampFlashes while the program operation is being set and illuminates
while the unit is in operation.
⑭MEASURED TEMP.
displayDisplays measured temperature in the bath・set characters・alarm
information.
⑮SET TEMP. displayDisplays a set temperature, timer settings and timer remaining time.
⑯OVER TEMP.
PROTECTOR displayDisplays the set temperature for the overheat prevention device.
①
⑦
⑯
⑮
⑭
⑧
⑨
⑩
⑪
⑫
③
②
④
⑥⑤
⑬

11
3. Names and functions of parts 
Explanation of characters
Characters on the VS4 type controller are explained in this section.
CharactersIdentifierNameApplication
FixFixed temperature
operation settingMeans settings for fixed temperature operation.
SvTemperature settingUsed for setting a temperature.
AStPAuto stop settingUsed for setting auto stop operation.
AStrAuto start settingUsed for setting auto start operation.
timTime settingUsed for setting a time.
PrG3Program type select
Used for selecting a program type 1,
2 or 3 to be used.
See section “Preparing a program on
page 23.
PAtProgram pattern select
Used for selecting a program pattern
to be used.
See section “Preparing a program on
page 23.
EndTime upDisplayed when timer operation has
ended.
See page 18, 19, and 21.
Sv-1Program temperature
setting
Used for setting temperatures for
each step of a program.
(Sv-1 to Sv-30 are displayed.)
t-1Program time settingUsed for setting time for each step of
a program.
(t-1 to t-30 are displayed.)
PS-3Program repeat
Selecting a return
destination
Used for selecting a step for returning
during program repeat operation.
See section “Program repeat
operation” on page 28.
Pc-2Setting number of
program repetitions
Used for setting number of program
repeat operations.
See section “Program repeat
operation” on page 28.

12
3. Names and functions of parts 
Explanation of characters
CharactersIdentifierNameApplication
cALCalibration offset setting
Used for inputting a calibration offset
temperature
See section “Using the calibration
offset function” on page 31.
oHSetting overheat
protection device
temperature
Used for setting an overheat
protection device temperature.
See section “Settings for overheat
prevention device” on page 16.
LockKey lock of settings
Key locks settings to prevent their
alteration
See section ”Using the lock function”
on page 32.
* See the section “Operation mode・function setting keys and characters” on page 15 for
characters of operation modes and functions
.

13
4. Operating procedures
List of operation modes and functions
Operation modes of the unit are as shown below:
№NameDescriptionPage
1 Fixed temperature
operation
Pressing the FIXED TEMP. key to enter the fixed
temperature operation setting mode.
Pressing the FIXED TEMP. key again to enter the
temperature setting mode.
Set a temperature with the ▼▲ keys.
Pressing the RUN/STOP key to start operation, 
and pressing the RUN/STOP key again to stop operation.
P.17
2 Quick auto
stop operation
Used when you want to, for example, “stop operation being
performed automatically in several hours.
Pressing the TIMER key during the fixed temperature
operation to enable setting a time before operation stops.
Set a duration before stop with the ▼▲ keys.
Pressing the RUN/STOP key starts quick auto stop operation
and activates the timer in the middle of it to automatically
stop it after the set period of time.
P.18
3 Auto stop operation
Used when you want to “set automatic stop for fixed
temperature operation when making settings for it.”
Press the TIMER key to display “AStP.”
Pressing the ENTER key to set the temperature setting “Sv.”
Pressing the ENTER key again to enable setting of the
operation time “tim.”
Pressing the RUN/STOP key starts auto stop operation.
P.19
4 Auto start operation
Used when you want to “start operation automatically after
several hours” after power is turned on.
Press the TIMER key to display “AStr.”
Pressing the ENTER key to set the temperature setting “Sv.”
Pressing the ENTER key again to enable setting of the
operation time “tim.”
Pressing the RUN/STOP key starts auto start operation.
P.21
5 Program operation
This is used to raise or lower temperature based on the set
temperature and time.
Press the PROGRAM key to display “PrGn.” (n:1,2,3)
Press the PROGRAM key again to select a program mode
you want.
To select “PrG2” or “PrG3”, press the ENTER key to select a
pattern “PAt” you want.
Pressing the RUN/STOP key starts program operation.
P.23
* Operation mode cannot be changed while the unit is in operation. First stop operation before
changing the mode.

14
4. Operating procedures
List of operation modes and functions
Operating functions of the unit are as shown below:
№NameDescriptionPage
1 Overheat prevention
function
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. 
Overheat prevention device:
Although the power supply, the display and the key input
assembly are in common with the controller, the device
consists of the standalone temperature measurement
circuit, the CPU, the sensor, and the output circuit
enabling to set to a temperature you want on the
operation panel.
If the overheat prevention device is triggered, the unit will
stop and will not recover until the power switch is turned
on again. (Manual recovery)
P.16
2 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 to either plus or minus side
for the whole temperature band of the unit.
P.31
3 Overheat prevention temperature
compensation function
When temperature compensation in item two is made for
the controller, temperature to be input to the overheat
prevention device will also be compensated automatically.−
4 Power outage
compensation function
When power outage occurs in the middle of operation, the
operation resumes from the status immediately before the
power outage.−
5 Setting lock functionThis function locks the set operation status.
The lock can be set or released with the SUB MENU key.P.32

15
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
FIXED
TEMP
Sv
RUN/
STOP
Temp.setting
Timer
operation
Settingoverheat
preventiondevice Calibrationoffsetfunction
▲▼
TIMER
TIMER
Fixedtemp.
operation
Quick/autostop Autostart
One
sec.
RUN/
STOP
Sv
▲▼
Temp.setting
tim
Timesetting
▲▼
ENTER
One
sec.
Operation
start Autostartof
operation
▼ ▲
Settingoverheat
preventiondevice
temp.
▼ ▲
Setting
compensation
temp.
PlusMinus
SUB
MENU
Operation
start
TIMER
TIMER
Timerstart
▼ ▲ ▼ ▲
SUB
MENU
FIXED
TEMP.
Autostop
▲▼
tim
Timesetting
AStP
ENTER
Sv
▲▼
Temp.setting
tim
Timesetting
▲▼
One
sec.
TIMER
AStr
Automatic
stopof
operation
oH
ENTER
ｃAL
PRO-
GRAM
Programming
PRO-
GRAM
Program1 Program2 Program3
ENTER
PrG1
30stepsx1pattern PrG3 10stepsx3patterns
PrG2
15stepsx2patterns
Settingno.of
programsteps
End
▲
▼
Sv-1
▲▼
Programmode
setting
Step1
Temp.setting
t-1
▲▼
Step1
Timesetting
Presstoswitch
Temp.andtime
aresetinturn
foreachstep
ENTER
Programoperation
start
SUB
MENU
SUB
MENU
PS-n
▼ ▲
SettingstepNo.
toreturn
SUB
MENU
Pc-n
▼ ▲
Settingno.of
steprepetitions
Programrepeat
operation
PAｔ
Programpattern
select
▲
▼
Settingno.of
programsteps
End
▲▼
Sv-1
▲▼
Step1
Temp.setting
t-1
▼ ▲
Step1
Timesetting
Temp.andtime
aresetinturn
foreachstep
Programrepeat
operation
(sameasleft)
Lockfunction
▼ ▲
Locksetting
ENTER
OFF
ON
▼ ▲
SUB
MENU
Lock
Operation
start
One
sec.
RUN/
STOP RUN/
STOP
RUN/
STOP
RUN/
STOP
PRO-
GRAM
Program
operation
PRO-
GRAM
Program1 Program2 Program3
PrG1
30stepsx1pattern PrG3 10stepsx3patterns
PrG2
15stepsx2patterns
Programmode
select
Presstoswitch
ENTER
PAｔ
Programpattern
select
▲
▼
RUN/
STOP
Operation
start
RUN/
STOP
Operation
start
ENTER
ENTER
ENTER ENTER
ENTER
ENTER
ENTER
ENTER
ENTER
ENTER
ENTER ENTER
ENTER
ENTER ENTER
ENTER
ENTER

16
4. Operating procedures
Settings for overheat prevention device
The safety device for preventing overheat has the automatic overheat prevention function for the
controller (automatic recovery) and has the power supply, the display and the key input assembly in
common with the controller as well as it has an overheat prevention device (manual recovery) as a
secondary safety measures that consists of separate temperature measurement circuit, the CPU,
the sensor and the output circuit.
Temperature setting range and functions
The device has overheat prevention function in double. One is the function integrated in the
controller, which is designed to be activated automatically at a temperature 12℃above the set
temperature of the temperature controller (the heater repeats ON/OFF at +12℃) at the time of
shipping from the factory.
Another is integrated with the controller and is set with the keys on the controller.
The secondary overheat prevention function is added by this setting. 
The temperature range settable for the overheat prevention device integrated with the controller is
“0℃to the 50℃+ the highest set temperature for the device.”
When the temperature in the bath keeps rising beyond the controller set temperature and reaches
the set temperature of the overheat prevention device, the circuit trips, Er19 flashes on the controller
screen, and the buzzer continues to sounds.
When the overheat prevention device is activated, it will not be released until power is turned on and
Er19 will not be released.
How to set temperature1. Turn power ON. (Turn the ELB to ON.)
When power is turned ON, the initial values will be displayed
for about four seconds, then the initial screen will appear and
the current bath temperature, operation mode character and
the overheat prevention set temperature are displayed on
each of the displays.
MEASURED TEMP.
℃
HEATER
ALARM
AUTO STOP
AUTO START
ENTER
SET
TEMP.
OVER TEMP.
PROTECTOR
FIXED TEMP.
RUN
STOP
SUB
MENU
TIMER
FIXED
TEMP. PROGRAM
PROGRAM
MEASURED TEMP.
℃
HEATER
ALARM
AUTO STOP
AUTO START
ENTER
SET
TEMP.
OVER TEMP.
PROTECTOR
FIXED TEMP.
RUN
STOP
SUB
MENU
TIMER
FIXED
TEMP. PROGRAM
PROGRAM
2. Setting the overheat prevention temperature
①Press the SUB MENU key.
②Press the ▼▲ keys to select the overheat prevention
temperature setting character oH for the
MEASURED TEMP. display.
③Pressing the ENTER key displays the current set
temperature flashing on the SET TEMP. display.
Caution: In general, set to a temperature at least 10℃
higher than the controller set temperature to
prevent the device from malfunctioning.
④When the temperature you want is obtained with the ▼▲
keys, press the ENTER key to complete setting.
Caution
①Set temperature as “highest operation temperature for the unit +20℃” or “set temperature
+20℃” as a rough standard and add 5℃to the setting if the device functions improperly.
②Be sure to set the overheat prevention activation temperature correctly otherwise the device
may not start, the overheat prevention device is activated before temperature in the bath
increases completely, or a fire or other unexpected accidents may result.
The temperature is set at 290℃on shipping from the factory.
③The overheat prevention device has been designed to prevent overheating of devices not to
protect samples. The device does not prevent accidents caused from use of explosive or
flammable materials.
①
②
③
④
④

17
4. Operating procedures
Operating procedures (fixed temperature operation)
How to start fixed
temperature
operation
MEASURED TEMP.
℃
HEATER
ALARM
AUTO STOP
AUTO START SET
TEMP.
OVER TEMP.
PROTECTOR
FIXED TEMP.
PROGRAM
1. Turn power ON. (Turn the ELB to ON.)
When power is turned ON, the initial values will be displayed for
about four seconds, then the initial screen will appear and the
current bath temperature, operation mode character and the
overheat prevention set temperature are displayed on each of the
displays.
MEASURED TEMP. display: Indicates the present bath temperature and various
characters.
Set temperature display: Indicates the set temperature and various characters.
Overheat prevention set temperature display: Indicates the set temperature for
the overheat prevention device.
For operation mode characters, see section page 11.
MEASURED TEMP.
℃
HEATER
ALARM
AUTO STOP
AUTO START
ENTER
SET
TEMP.
OVER TEMP.
PROTECTOR
FIXED TEMP.
RUN
STOP
SUB
MENU
TIMER
FIXED
TEMP. PROGRAM
PROGRAM
MEASURED TEMP.
℃
HEATER
ALARM
AUTO STOP
AUTO START
ENTER
SET
TEMP.
OVER TEMP.
PROTECTOR
FIXED TEMP.
RUN
STOP
SUB
MENU
TIMER
FIXED
TEMP. PROGRAM
PROGRAM
MEASURED TEMP.
℃
HEATER
ALARM
AUTO STOP
AUTO START
ENTER
SET
TEMP.
OVER TEMP.
PROTECTOR
FIXED TEMP.
RUN
STOP
SUB
MENU
TIMER
FIXED
TEMP. PROGRAM
PROGRAM
2. Selecting an operation mode
Press the FIXED TEMP. key to display the fixed temperature
operation mode on the SET TEMP. display.
Display the character Fix . 
3. Setting the temperature
Press the FIXED TEMP. key again.
The character SV that indicate a set temperature is
displayed on the MEASURED TEMP. display on which the current
set temperature flashes and the FIXED TEMP. lamp flashes.
Set a temperature using the ▼▲ keys.
4. Starting operation
Press the RUN/STOP key for about one second. Operation starts
and status of the FIXED TEMP. lamp changes from flashing to
illuminated.
5. Stopping operation
Press the RUN/STOP key for about one second. Operation stops,
the FIXED TEMP. lamp goes off and the screen switches to the initial
setting screen.
When you want to
correct setting
errors or confirm
settings
When you made a mistake during setting or reconfirm settings you
made, press the FIXED TEMP. key again to resume setting.
When you want to change set temperature during operation, press the
FIXED TEMP. key to enter the setting mode and change the set
temperature. After change has been made, press the ENTER key to
complete the process.

18
4. Operating procedures
Operating procedures (quick auto stop operation)
Procedures for quick
auto stop operationUsed when you want to, for example, “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.
MEASURED TEMP.
℃
HEATER
ALARM
AUTO STOP
AUTO START
ENTER
SET
TEMP.
OVER TEMP.
PROTECTOR
FIXED TEMP.
RUN
STOP
SUB
MENU
TIMER
FIXED
TEMP. PROGRAM
PROGRAM
1. Setting time period before stop during fixed temperature
operation
Make sure that the FIXED TEMP. lamp is illuminated to indicate the
unit is the fixed temperature operation mode.
Press the TIMER key.
The character tim that indicates the timer is displayed on
the MEASURED TEMP. display and the current set time flashes on
the SET TEMP. display.
Set a time you want using the ▼▲ keys.

About the timer functionThe maximum time that can be set for the timer is 999 hours 50
minutes.
Up to 99 hours 59 minutes, time can be set in minutes.
One hundred hours and over are set only in 10 minutes.
Keep the ▼▲ keys pressed to continuously change set time and you
can quickly reach the time you want. Press the ▼▲ keys once at a
time for fine adjustment.
MEASURED TEMP.
℃
HEATER
ALARM
AUTO STOP
AUTO START
ENTER
SET
TEMP.
OVER TEMP.
PROTECTOR
FIXED TEMP.
RUN
STOP
SUB
MENU
TIMER
FIXED
TEMP. PROGRAM
PROGRAM
2. Starting timer operation
When you have set a time you want, start the RUN/STOP key for
about one second. Timer operation starts with the FIXED TEMP.
lamp and the AUTO STOP lamp are illuminated. Timer starts
counting when the RUN/STOP key is pressed.
3. Stopping and ending timer operation
Operation stops automatically when the set time comes.
The buzzer sounds for about five seconds to indicate operation has
stopped. At this time, the character End that indicates
operation end is displayed on the SET TEMP. display with the
FIXED TEMP. lamp and the AUTO STOP lamp are illuminated.
Press the RUN/STOP key for approx. one second to end the timer
operation mode. The screen switches to the initial setting screen.
When you want to
correct set
temperature or set
time, or confirm
settings
When you want to change set temperature during operation, press the
FIXED TEMP. key to enter the setting mode and change the set
temperature. After change has been made, press the ENTER key to
complete the process. When you want to change set time during
operation, press the TIMER key to enter the setting mode and change
the set time. Note, however, you need to set a time calculated by
adding the time already passed to the time to be added. After
change has been made, press the RUN/STOP key to complete the
process.
Pressing the ▼key will display the set temperature, the operation
mode and the remaining time on the SET TEMP. display.