Yamato LR500 Series User manual

Labo-Stirrer
Model LR500A/500B
Instruction Manual
First Edition
●Thank you for choosing LR series Stirrers by
Yamato Scientific Co., Ltd.
●For proper equipment operation, please read and
become thoroughly familiar with this instruction manual
before use. Always keep equipment documentation safe
andclose athandforconvenientfuturereference.
Warning: Readinstructionmanual warnings and
cautions carefullyandcompletely
beforeproceeding.
Yamato Scientific America Inc．
Santa Clara，CA
Printed on recycled paper

Depending on their extent and nature of danger, the warnings the given in this operating
instruction is classified into the following two categories by symbol.
To protect operators from accident
Negligence of the warning may result in a serious accident of operators
To protect the LABO-STIRRER from damage
Negligence of this warning may result in a damage of the LAMO-
STIRRER. This warning gives you also a tip on performance which is
useful in operation and maintenance of the LABO-SEIRRER or indicates
the common mistakes that operators often make.
Danger
Caution

Contents
FEATURES............................................................................................................................................ 1
ABSOLUTE REQUIREMENTS FOR INSTALLATION......................................................................... 2
NAME AND FUNCTION OF EACH PART ........................................................................................... 4
INSTALLATION AND PREPARATION BEFORE OPERATION .......................................................... 6
OPERATION ......................................................................................................................................... 7
MAINTENANCE.................................................................................................................................... 8
AFTER SALE SERVICE AND WARRANTY ........................................................................................ 9
TROUBLESHOOTING........................................................................................................................ 10
SPECIFICATIONS................................................................................................................................11
WIRING DIAGRAM............................................................................................................................. 12
REPLACING PART TABLE................................................................................................................ 13
OPTIONAL ACCESSORIES............................................................................................................... 14
REFERENCE DATA............................................................................................................................ 15

1
FEATURES
LABO-STIRRER Models LR500A and LR500B have the following features.
1. Maintenance Free Brushless Motor
Maintenance free DC brushless motor is equipped in our LABO-STIRRER. It is superior
in safety without having spark occurrence, and you need not to replace flush.
2. Stirring Propeller Direct Drive System
No noise is produced and gear replacement due to wearing is not necessary.
3. Digital Tachometer
You can easily set and confirm the revolving speed.
4. Torque Monitor
Load applied on the stirring shaft can be monitored. Load condition is indicated in LED
two steps. Overload LED (Red) blinks when allowable load is exceeded, and it is lit up
and the motor is automatically stopped when the load is further increased.
5. Revolving Speed Feed Back Control System
LABO-STIRRER can always keep the revolving speed of shaft to set value although
load is changed by the stirring of high viscosity solution.
6. Through Shaft
Though shaft has no run-out and can move the position of blades freely.

2
ABSOLUTE REQUIREMENTS FOR INSTALLATION
Danger
①Ground the LABO-STIRRER
Don’t forget to ground the LABO-STIRRER, which protects you from electric shock in case
of power leakage. Choose a receptacle with grounding connectors as much as you can.
接地型コンセント
電源プラグ
Connect the LABO-STIRRER’s power plug to a receptacle with grounding connectors.
If no grounding terminal is available, the oven needs Type ⅢGrounding Work for power
supply. Contact our sales representative in your vicinity or our service center for the work.
②Choose a proper place for installation.
Don’t install the oven in the place where:
・Inflammable gas or corrosive gas is generated
・Ambient temperature exceeds 35℃
・Ambient temperature fluctuates violently
・There is direct sunshine.
Grounding connector
Power plug

3
ABSOLUTE REQUIREMENTS FOR INSTALLATION
Caution
①Don’t modify the LABO-STIRRER
Unauthorized modification will cause hazard to operators and trouble of the
LABO-STIRERR.
②Install the LABO-STIRRER at leveled place.
Installation at undulating or inclined place will cause hazard to operators and trouble of the
LABO-STIRERR during stirring.

4
NAME AND FUNCTION OF EACH PART
[External View]
①Support
⑨Stirring shaft
②Frame
⑩Stirring propeller
③Fixing knob
⑪Chunk
④Support fixing boss
⑫Plug
⑤Support cap
⑬Speed control knob
⑥Main body
⑭Display panel
⑦Arm
⑮Fuse
⑧Clamp
⑮
⑭
⑬
⑫
①
⑪
⑩
⑨
⑧
⑦
⑥
⑤
④
③
②

5
NAME AND FUNCTION OF EACH PART
[LR4500A]
[LR500B]
Revolving Speed Display (Ex: 300rpm)
Torque Monitor (Green)
First step: Approx.33% and more load
Second step: Approx. 66% and more load
Revolving Speed Display (Ex: 300rpm)
Torque Monitor (Red)
Blinking: Overload operation condition
Lighting: Overload stopping condition
Revolving Speed Display (Ex: 1200 rpm)

6
INSTALLATION AND PREPARATION BEFORE
OPERATION
1. Confirm the packing contents.
Main body: 1 unit
Shaft: 1 pc.
Stirring propeller 1 pc.
φ75mm (LR500 series)
Chunk handle: 1 pc.
Clamp: 1 pc.
Fuse: 1 pc.
Delivery date plate: 1 pc.
Guarantee certificate: 1 copy
Instruction manual: 1 copy
2. Assemble according to the external view.
2.1. (Optional accessory, frame)
Put the support ①in the support fixing boss ④, then fix it firmly with the tightening
knob③.
2.2. Attach the clamp ⑧to the frame support ①, then fix the main body ⑥
.
2.3. Screw the stirring propeller ⑩into the stirring shaft ⑨, and insert the stirring shaft ⑨into the
chuck ⑪, then fix it so as fastening at three chuck holes to be equal by the chuck handle.
Danger
Choose a receptacle with grounding connectors not to get electric shock. If there are only
bipolar receptacle available in your workshop, connect an optional grounding adapter to the
oven’s power plug, and connect the adapter’s grounding wire to a receptacle’s grounding
terminal.
Don’t connect the grounding wire to gas or water piping.
Don’t use branching plug socket, which causes heat generation of the power line.
Don’t install the LABO-STIRRER in the place where inflammable gas or corrosive gas is
generated.

7
OPERATION
1. Connect the power supply cord to the power supply ofAC 115V.
2. Length of the stirring shaft shall be adjusted according to the vessel in which stirring liquid is
contained. However, you use it with the shaft being put out as short as possible. Because there
will be fewer run-out of shaft and life of the bearing will be lengthened.
3. Turning the speed control knob ⑬clockwise, power supply switch will be on and the further you
turn it clockwise, the faster its revolving speed will be Confirm the revolving speed by the display
panel when you set it.
4. The torque monitor is not lit up when load is small. However it is lit up from the left side (green)
as load is increased. When it becomes over the load the red lamp (right end) blinks and
revolving speed is decreased. If the load is further increased, the red lamp is lit up and the
operation is stopped.
Caution
If the speed control knob is turned clockwise rapidly, set revolving speed may be exceeded,
however it is not trouble since it may become to the set value soon.
Do not operate continuously in the overload condition. Thermal switch of the motor is activated
and the operation is stopped. In this case, leave it for some and start the operation again after
cooling.
Danger
This unit has the structure which is hard to catch fire, however, it does not have an
explosion-proof condition, you cannot use it especially at place where there is a danger of
inflammability.