Yamato FO100CR User manual

Muffle Furnace
Model
FO100CR/200CR/300CR
FO110CR/210CR/310CR
410CR/510CR
- Second Edition -
Yamato Scientific America Inc．
Thank you for purchasing "Muffle Furnace, FO
Series" of Yamato Scientific Co., Ltd.
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.

Contents
Cautions in Using with Safety......................................................................... 1
Explanation.............................................................................................................................. 1
Table of Illustrated Symbols.................................................................................................. 2
Fundamental Matters of "WARNING!" and "CAUTION!"..................................................3
Before Using this unit........................................................................................ 4
Requirements for Installation................................................................................................ 4
Description and Function of Each Part.........................................................7
Main Unit.................................................................................................................................. 7
Control Panel...........................................................................................................................8
Characters of the Controller.................................................................................................. 9
Operation Method............................................................................................. 10
Operation Mode and Function List.....................................................................................10
Operation Mode, Function Setting Key, and Characters................................................ 11
Fixed Temperature Operation.............................................................................................12
Quick Auto Stop Operation................................................................................................. 13
Auto Stop Operation.............................................................................................................14
Program Operation...............................................................................................................18
Temperature Rise/Fall Curve (Reference)........................................................................23
Program Operation...............................................................................................................25
Other Functions.................................................................................................................... 27
Handling Precautions...................................................................................... 29
Maintenance Method........................................................................................ 31
Daily Inspection and Maintenance.....................................................................................31
Long storage and disposal............................................................................ 32
When not using this unit for long term / When disposing...............................................32
In the Event of Failure…..................................................................................33
Safety Device and Error Code............................................................................................33
Trouble Shooting.................................................................................................................. 34
After Service and Warranty............................................................................ 35
Specification.......................................................................................................36
FO100CR/200CR/300CR....................................................................................................36
FO110CR/210CR/310CR/410CR...................................................................................... 37
Optional Accessories........................................................................................................... 38
Wiring Diagram.................................................................................................. 39
Replacement Parts Table................................................................................ 41
Reference............................................................................................................ 43
List of Dangerous Substances........................................................................................... 43

1
Cautions in Using with Safety
Explanation
MEANING OF ILLUSTRATED SYMBOLS
Various symbols are used in this safety manual in order to use the unit without
danger of injury and damage of the unit. A list of problems caused by ignoring
the warnings and improper handling is divided as shown below.Be sure that you
understand the warnings and cautions in this manual before operating the unit.
WARNING! If the warning is ignored, there is the danger 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 prohibited.
A detailed message is shown adjacent to the symbol with specific actions not to
perform.
This symbol indicates items that should be always performed.
A detailed message with instructions is shown adjacent to the symbol.
Illustrated Symbols

2
Cautions in Using with Safety
Table of Illustrated Symbols
Warning
Warning,
generally
Warning,
high voltage
Warning,
high temperature
Warning,
drive train
Warning,
explosive
Caution
Caution,
generally
Caution,
electrical shock
Caution,
scald
Caution,
no water heating
Caution,
don’t get wet
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

3
Cautions in Using with Safety
Fundamental Matters of "WARNING!" and "CAUTION!"
WARNING!
Do not use this unit in an area where there is flammable or explosive gas
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. (Refer
to page 43 "List of Dangerous Substances".)
Always ground this unit
Always ground this unit on the power equipment side in order to avoid electrical shock due to a power
surge.
If a problem occurs
If smoke or strange odor should come out of this unit for some reason, turn off the power key right away,
and then turn off the circuit breaker and the main power. Immediately contact a service technician for
inspection. If this procedure is not followed, fire or electrical shock may result. Never perform repair work
yourself, since 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.
Do not disassemble or modify this unit
Do not disassemble or modify this unit. Fire or electrical shock or failure may be caused.
Do not touch high-temperature parts
The inside of the chamber or the door may become hot during and just after operation. It may cause
burns.
CAUTION!
During a thunder storm
During a thunderstorm, turn 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.

4
Before Using this Unit
Requirements for Installation
WARNING!
1. Always ground this unit
Connect the power plug to a receptacle with grounding connectors.
Do not forget to ground this unit, to protect you and the unit from electrical shock in case of
power surge. Choose a receptacle with grounding connectors as often as possible.
Do not connect the grounding wire to a gas pipe, or by means of a lightning rod or telephone
line. A fire or electrical shock will occur.
FO100CR/200CR/300CRmodel is the 115V single phase mode. Be sure to connect this
model to the specific power switchboard or receptacle for 115V.
FO110CR/210CR/310CR/410CR/510CR model is the 220V single phase mode. Be sure to
connect this model to the specific power switchboard or receptacle for 220V.
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.
There is direct sunlight.
There is excessive humidity and dust.
There is a constant vibration.
Install this unit on a stable place with the space as shown below.
More than 30cm
Front side
More than 30cm
(also the reverse side)
More than
1m
52cm

5
Before Using this Unit
Requirements for Installation
3. Do not use this unit in an area where there is flammable or explosive gas
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. (Refer to
page 43 "List of Dangerous
Substances".)
4. Do not modify
Modification of this unit is strictly prohibited.
This could cause a failure.
5. Installation on horizontal surface
Set this unit on a flat, level surface or floor. Not
setting this unit with its legs touching the surface or
floor evenly could cause vibration or noise, or cause
unexpected trouble or malfunction.
Modification
Flammable Gas
Explosive Gas

6
Before Using this Unit
Requirements for Installation
6. Choose a correct power distribution board or receptacle
Choose a correct power distribution board or receptacle that meets the unit’s rated electric
capacity.
Electric capacity :
FO100CR: AC115 V, (Single phase)10A
FO200CR: AC115 V, (Single phase)14.5A
FO300CR: AC115 V, (Single phase)19A
FO110CR: AC220 V, (Single phase) 5A
FO210CR: AC220 V, (Single phase)7.5A
FO310CR: AC220 V, (Single phase)9.5A
FO410CR: AC220 V, (Single phase)10.5A
FO510CR: AC220 V, (Single phase)12A
NOTE:
There could be the case that the unit does not run even after turning ON the power. Inspect
whether the voltage of the main power is lower than the specified value, or whether other
device(s) use the same power line of this unit. If the phenomena might be found, change the
power line of this unit to the other power line.
7. Before/after installing
It may cause injure to a person if this unit falls down or moves by the earthquake and the
impact. etc.. To prevent, take measures that the unit cannot fall down, and don’t install in a
busy place.
Touching the unit may cause a burn during and after the operation. To prevent, take measures
that putting up a notice of operating etc..
8. Handling of power code
Do not entangle the power cord. This will cause overheating and possibly a fire.
Do not bend or twist the power cord, or apply excessive tension to it. This may cause a fire and
electrical shock.
Do not lay the power cord under a desk or chair, and do not allow it to be pinched in order to
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 for replacement of the power cord. Leaving it may cause a fire or electrical shock.
Connect the power plug to the outlet which supplies appropriate power and voltage.

7
Description and Function of Each Part
Main Unit
FO100CR
Rear View
Control panel
Power cord
Production plate
Power switch
(ELB)
Specification plate
Front View
Fan
Mounting hole for
Exhaust opening

8
Description and Function of Each Part
Control Panel
①
START/STOP Key：
Starts/stops the operation.
②
▲▼ Key：
Uses for rising UP/lowering DOWN the setting value.
③
ENTER Key：
Settles the inputted value.
④
FIXED TEMP Key：
Chooses the fixed temperature operation.
⑤
TIMER Key：
Chooses the timer operation (Quick Auto Stop/Auto Stop/ Auto Start).
⑥
PROGRAM Key：
Chooses the program operation or program creation mode.
⑦
SUBMENU Key：
Uses for setting the overheating prevention temperature, calibration
offset temperature, key lock function, or program repeat function.
⑧
HEATER Lamp：
Lights while the heater works.
⑨
ALARM Lamp：
Lights up when an error occurs. (Buzzer sounds simultaneously.)
⑩
AUTO STOP Lamp：
Blinks while setting quick auto stop timer or auto stop timer.
Lights while quick auto stop timer or auto stop timer is running.
⑪
AUTO START Lamp：
Blinks while setting auto start timer.
Lights while auto start timer is running.
⑫
FIXED TEMP Lamp：
Blinks while setting fixed temperature operation.
Lights while fixed temperature operation is running.
⑬
PROGRAM Lamp：
Blinks while setting program operation.
Lights while program operation is running.
⑭
Measurement Temperature
Display：
Displays the measured temperature, setting character, alarm
information.
⑮
Setting Temperature
Display：
Displays the setting temperature, setting value for timer mode,
remaining time.
⑯
Overheating Prevention
Temperature Display：
Displays the setting temperature for overheating prevention device.
⑰
Power Switch：
(circuit breaker)
Turns ON/OFF the main power.
⑧
⑨
⑩
⑪
⑫
⑬
③
②
④
⑤
⑦
⑥
①
⑯
⑮
⑭

9
Description and Function of Each Part
Characters of the Controller
The characters VS4 controller shows are as follows:
Character
Identifier
Name
Purpose
FiX
Fixed Temperature
Setting Mode
Used for starting the fixed temperature
operation.
Sv
Temperature Setting
Used for setting the temperature.
AStP
Timer Setting Mode
Display
Represents the setting of quick auto stop or
auto stop operation.
AStr
Timer Setting Mode
Display
Represents the setting of auto start
operation.
tim
Time Setting
Used for setting the time.
PrG3
Program Type
Used for choosing program type from 1 to 3.
(Refer to Page 18 " Program Operation".)
PAt
Program Pattern
Used for choosing program pattern. (Refer to
Page 18 " Program Operation".)
End
Time Up
Displays when the timer operation is
completed or while inputting number of
program steps. (Refer to Page 18 " Program
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 22 “Use
program repeat function".)
Pc-2
Repeating Times
Used for setting the repeating times under
the program operation with repeat function.
(Refer to Page 22 “Use program repeat
function".)
cAL
Calibration Offset
Setting
Used for inputting the calibration offset
temperature. (Refer to Page 28 "Other
Function".)
oH
Overheating Prevention
Setting
Used for setting temperature for overheating
prevention device. (Refer to Page 27 "Other
Functions
Setting of Overheating Prevention Device ".)
LocK
Key Lock
Locks the keys on control panel to protect
from unnecessary operation. (Refer to Page
28 "Other Function".)
Also refer to Pages 10 "Operation Mode and Function List" and 11 "Operation Mode, Function Setting
Key, and Characters".

10
Operation Method
Operation Mode and Function List
All the operation mode of this unit is as follows;
No.
Name
Description
Page
1.
Fixed Temperature
Operation
Pressing the FIXED TEMP key enters into the fixed
temperature operation setting mode.
Pressing it again enters into the temperature setting mode.
The "▲▼" are used to set temperature.
Pressing the START/STOP key starts or stops operation.
12
2.
Quick Auto Stop
Operation
This operation is used to specify the period up to automatic
stop during operation.
The period up to operation stop can be set by pressing the
TIMER key during fixed temperature operation.
The "▲▼" are used to set the time.
Pressing the START key starts the quick auto stop
operation, activates the timer function and stops the
operation automatically after specified period.
13
3.
Auto Stop Operation
This operation is used to specify the automatic stop time in
the fixed 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.
14
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 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 start
operation.
16
5.
Program Operation
This operation is used to change the temperature according
to the setting temperature and time.
Pressing the PROGRAM key displays "PrG1".
Press it again to select the program mode.
Press the ENTER key to select the pattern "PA t". Press the
ENTER key to display "End". Input the number of patterns
to be used.
Input the temperature and time of patterns "SV-n" and "t-n"
respectively.
18
NOTE: This unit is impossible to be changed the mode during the operation. If the mode requires to be changed,
stop the operation.

11
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.

12
Operation Method
Fixed Temperature Operation
Fixed temperature
operation procedure
1. Turn on the power (turn on the breaker in front)
The default value is displayed for about four seconds after turning on
the power. The screen then displays the initial setting. The
current temperature in furnace, operation mode character and
setting temperature of overheating prevention device are displayed
on respective screens.
2. Select the operation mode
Press the FIXED TEMP key to display "FIX", which indicates the
fixed temperature operation, on the center display screen.
3. Set the temperature
Press the FIXED TEMP key again.
The setting temperature screen displays the character "SV"
which indicates the temperature 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 lights off. The
screen returns to the initial setting screen.
To correct or check setting…
Press the FIXED TEMP key again to correct or check the setting.
Changing the setting temperature during operation is also possible by pressing the FIXED TEMP key.
Measurement temperature screen:
Displays the current temperature in furnace.
Setting temperature screen:
Displays the operation mode character. (Refer to Page 13)
Overheating prevention screen:
Displays the setting temperature of overheating prevention device

13
Operation Method
Quick Auto Stop Operation
Quick auto stop
operation procedure
This operation is used to specify the period up to automatic stop, i.e.,
sets the auto stop timer during operation.
1. Set the time up to stop during fixed temperature operation
Check that the FIXED TEMP lamp lights on and that the unit is
under operation.
Press the TIMER key.
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.
Select the time by pressing 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 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.
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
stop.
The setting temperature screen displays the character "End",
which indicates termination of operation, with 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 during operation is possible by pressing the FIXED TEMP key. Press
the ENTER key after changing the setting.
Changing the setting temperature during operation is available by pressing the FIXED TEMP key. Press
the ENTER key after changing the setting.
Press the ▼key to display the setting temperature, operation mode and residual time on the setting
temperature screen.

14
Operation Method
Auto Stop Operation
Auto stop operation
procedure
This operation is used to specify the automatic stop time in the fixed
temperature operation.
1. Set stop time
①Press the TIMER key on the initial screen.
Press the TIMER key again. The setting temperature display
screen displays the character "AstP", which indicates the auto stop
operation, with blinking.
②Press the ENTER key.
The measurement temperature screen displays the character
"SV", which indicates the temperature setting. The setting
temperature screen displays the current setting temperature with
blinking. The AUTO STOP lamp blinks, too.
③Set the temperature using the "▼▲".
④Press 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.
⑤Set 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 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.
2. Start timer operation
Press the START/STOP key for one second after deciding the
time.
Timer operation starts with the AUTO STOP lamp lighting on.
The timer is activated at the point when the temperature in
furnace (measurement temperature) reaches to the setting
temperature.

15
Operation Method
Auto Stop Operation
3. Stop/terminate timer operation
The operation stops automatically at setting time.
Buzzer continues to sound for about five minutes at operation
stop.
The setting temperature screen displays the character "End",
which indicates termination of operation, with 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 display the setting temperature, operation mode and residual time on the setting
temperature screen.

16
Operation Method
Auto Start Operation
Auto start operation
procedure
This operation is used to specify the period up to automatic start after
power on.
1. Set start time
①Press the TIMER key on the initial screen.
Press the TIMER key again. The setting temperature display
screen displays the character "Astr", which indicates the auto start
operation, with blinking.
②Press the ENTER key.
The measurement temperature screen displays the character
"SV", which indicates the temperature setting. The setting
temperature screen displays the current setting temperature with
blinking. The AUTO START lamp blinks, too.
③Set the temperature using the "▼▲".
④Press 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.
⑤Set the time using the "▼▲".
Timer function:
The maximum setting time is "999 hours and 50 minutes ".
The time can 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.
2. Start timer operation
Press the START/STOP key for one second after deciding the
time.
Timer operation starts with the AUTO START lamp lighting on.

17
Operation Method
Auto Start Operation
3. Stop/terminate timer operation
The operation starts automatically at setting time.
Press the START/STOP key for one second to stop or terminate
operation. 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. 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, operation mode and residual time on the setting
temperature screen.

18
Operation Method
Program Operation
This operation is used to change the temperature according to the setting temperature and time.
Program types
Six patterns of program types maximum can be input.
PrG1
-
1 program pattern using 30 steps maximum can be created.
PrG2
PAt1
2 program patterns using 15 steps maximum can be created.
PAt2
PrG3
PAt1
3 program patterns using 10 steps maximum can be created.
PAt2
PAt3
Before inputting program
Input program patterns before program operation.
①Check the number of steps in a created program and their setting temperature/time. Use the
program preparation form in pages 25 and 26 to check.
②Check the temperature rise/fall capability of the unit. Set the time within the capability above.
Suppose, for instance, that in the unit which has capability of increasing or decreasing
temperature by 3 ℃within ten minutes, about 35 minutes is needed to increase or decrease
temperature by 10℃from current temperature
(Refer to the "Temperature Rise/Fall Curve (Reference)" on the pages 23 to 25.)
Repeat function:
Repeat function is useful in case the operation uses the program repeating the same program
steps. Refer to page22 for the function.
③Check 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.
Temp.
Time
△Stop
△Start