Yamato Neocool CF302L-A User manual

Closed Cooling Water Circulator
Neocool® Circulator
model CF302L-A
Instruction Manual
First Edition
Yamato Scientific Co. Ltd.
Printed on rec cled paper
 Thank ou for choosing CF302L-A
Neocool® Circulator from Yamato
Scientific Co., Ltd.
 For proper equipment operation, please
read and become thoroughl familiar with
this instruction manual before use. Alwa s
keep equipment documentation safe and
close at hand for convenient future
reference.
Warning: Read instruction manual
warnings and cautions
carefull and completel
before proceeding.

TABLE OF CONTENTS
1. SAFETY PRECAUTIONS ............................................................................................................. 1
Explanation of S mbols ............................................................................................................. 1
S mbol Glossar ....................................................................................................................... 2
Warnings and Cautions ............................................................................................................. 3
Residual Risk Map .................................................................................................................... 6
List of Residual Risks ................................................................................................................ 7
2. COMPONENT NAMES AND FUNCTIONS ................................................................................. 10
External View .......................................................................................................................... 10
Circulation S stem ................................................................................................................... 11
Control panel ........................................................................................................................... 12
Displa Characters .................................................................................................................. 12
3. PRE-OPERATION PROCEDURES ............................................................................................ 13
Installation Precautions ........................................................................................................... 13
4. INSTALLATION PROCEDURES ................................................................................................. 16
Installation Procedure ............................................................................................................. 16
5. OPERATION PROCEDURES ..................................................................................................... 19
Operation procedure ............................................................................................................... 19
User Setting ............................................................................................................................ 20
Calibration offset ..................................................................................................................... 21
Auto-resume function .............................................................................................................. 22
Selection of circulation pump operation at temperature upper limit alert ................................ 23
LED brightness setting ............................................................................................................ 24
6. HANDLING PRECAUTIONS ...................................................................................................... 25
Warnings and Cautions ........................................................................................................... 25
7. MAINTENANCE PROCEDURES ............................................................................................... 27
Inspection and Maintenance ................................................................................................... 28
8. EXTENDED STORAGE AND DISPOSAL ................................................................................... 29
Extended Storage/Unit Disposal ............................................................................................. 29
Disposal Considerations ......................................................................................................... 29
9. TROUBLESHOOTING ................................................................................................................ 30
Error Codes ............................................................................................................................. 30
Troubleshooting Guide ............................................................................................................ 31
10. SERVICE & REPAIR ................................................................................................................. 32
Requests for Repair ................................................................................................................ 32
11. SPECIFICATIONS ..................................................................................................................... 33
12. REFERENCE DATA .................................................................................................................. 34
Cooling Capacit Curve .......................................................................................................... 34
Cooling Curve ......................................................................................................................... 34
Pump Performance Curve ....................................................................................................... 35

13. OPTIONAL ACCESSORIES ..................................................................................................... 36
List of Options ......................................................................................................................... 36
14. WIRING DIAGRAM ................................................................................................................... 39
CF302L-A ................................................................................................................................ 39
15. REPLACEMENT PARTS LIST .................................................................................................. 40
16. LIST OF HAZARDOUS SUBSTANCES .................................................................................... 41
17. STANDARD INSTALLATION MANUAL .................................................................................... 42

1
1. SAFETY PRECAUTIONS
Explanation of S mbols

2
1. SAFETY PRECAUTIONS
S mbol Glossar
WARNING / CAUTION
General Danger!
High Voltage
Danger!
Extremel Hot
Danger!
Moving Parts
Danger!
Blast Hazard
Caution:
Water Onl
Caution:
Shock Hazard!
Caution:
Burn Hazard!
Caution:
Do Not Heat
Without Water!
Caution:
Ma Leak Water!
Caution:
Toxic Chemicals
RESTRICTION
General
Restriction No Open Flame Do Not Disassemble Do Not Touch
ACTION
General Action
Required
Connect Ground
Wire Level Installation
Disconnect Power Inspect
Regularl

3
1. SAFETY PRECAUTIONS
Warnings and Cautions
WARNING
Install in a location free of flammables and explosives.
Never install or operate unit in a flammable or explosive gas atmosphere. Unit is NOT fire
or blast resistant. Simpl switching earth leakage breaker (ELCB) "ON" or "OFF" can
produce a spark, which can then be rela ed during operation, causing fire or explosion
when near flammable or explosive fluids, chemicals or gases/fumes.
See "16. LIST OF HAZARDOUS SUBSTANCES" (P.41) for information on flammable and
explosive gases.
Ground wire MUST be connected properl
・Connect power cable to a grounded outlet in order to avoid electric shock.
・Never connect ground wire to gas lines or water pipes. Fire, accident or equipment
malfunction ma result.
・Never connect ground wire to telephone grounding lines or to lightning conductor rods.
Fire or electric shock ma result.
・Never insert multiple plugs into a single outlet. Doing so ma result in power cable
overheating, fire or drop in voltage.
Connect to grounded outlet
Grounded outlet
When no ground terminal is found
Contact original dealer of purchase
for location-specific electrical
requirements.
Turn OFF (○) ELCB immediatel when an abnormalit occurs.
If unit begins emitting smoke or abnormal odors for reasons unknown, turn OFF (○) ELCB
immediatel , disconnect power cable from power suppl , and contact original dealer of
purchase for assistance. Continuing to operate without addressing abnormalities ma
cause fire or electric shock, resulting in serious injur or death. Never attempt to
disassemble or repair unit. Repairs should be alwa s be performed b a certified
technician.
Grounding prong
Grounded plug

4
1. SAFETY PRECAUTIONS
Warnings and Cautions
Handle power cable with care.
・Do not operate unit with power cable bundled or tangled. Operating unit with the power
cable bundled or otherwise tangled, ma cause power cable to overheat and/or catch
fire.
・Do not modif , bend, forcibl twist or pull on power cable. Fire or electric shock ma
result.
・Do not risk damage to power cable b positioning it under desks or chairs, or b
allowing it to be pinched in between objects. Fire or electric shock ma result.
・Do not place power cable near kerosene/electric heaters or other heat-generating
devices. Doing so ma cause power cable insulation to overheat, melt and/or catch fire,
which ma result in electric shock.
・Turn OFF(○) ELCB immediatel and disconnect from facilit terminal or outlet, if power
cable becomes partiall severed or damaged in an wa . Contact original dealer of
purchase for information about replacing power cable. Continuing to operate without
addressing abnormalities ma cause fire or electric shock, resulting in serious injur or
death.
・Alwa s connect power cable to appropriate facilit outlet or terminal.
・Keep power cable connection clean. Buildup of dust on the connection ma cause fire
and/or electric shock.
DO NOT disassemble or modif equipment
Never attempt to disassemble or modif unit. Doing so ma cause malfunction, fire,
electric shock, or personal injur . Note that an malfunction resulting from unauthorized
modifications or customizations to unit will void the warrant .
DO NOT touch hot/cold surfaces
Do not touch low and high temperature portions during or immediatel following an
operation. Severe burns or frostbite ma result.
DO NOT climb or place an objects on top of equipment.
Personal injur or equipment malfunction ma result due to falling.
Do not place an products other than those specified as options on top of unit.
Keep upright.
Never tip or place unit on its side while moving or transporting. Damage to refrigeration
s stem ma result.
If briefl tilting unit to one side or the other is unavoidable during transport, refrain from
turning power on for at least 24 hours after positioning unit upright.

5
1. SAFETY PRECAUTIONS
Warnings and Cautions
CAUTION
DO NOT operate equipment during thunderstorms
In the event of a thunderstorm, turn OFF (○) ELCB and disconnect power cable
immediatel . A direct lightning strike ma cause equipment damage, fire or electric shock,
resulting in serious injur or death.
Turn OFF (○) ELCB in case of power failure.
Operation stops when power failures occur. For added safet however, turn OFF (○)
ELCB in the event of a power failure.

6
1. SAFETY PRECAUTIONS
Residual Risk Map
These figures indicate positions of caution labels.
The numbers shown in the figure indicate the numbers listed in the "List of Residual Risks" in
this manual.
For details of individual residual risks, see the List of Residual Risks.
* Contact us if the caution signs are no more visible because nameplate is peeled off or
texts are eliminated. We will send ou a new nameplate. (for charge)
Rating label
2, 3, 6, 7, 10,
12, 14, 16

7
1. SAFETY PRECAUTIONS
List of Residual Risks
List of residual risks (instructions for risk avoidance)
This list summarizes residual risks to avoid personal injuries or damages to properties during or related
to the use of equipment.
Be sure to full understand or receive instructions on how to use, maintain and inspect
equipment before starting operation.
Loading/Installation
No. Degree of
risks
Risk
description
Protective measures taken b the user Relevant
page(s)
1 CAUTION Injur
Alwa s use cargo-handling equipment to move
or install unit. Transport unit with sufficient
number of people and an appropriate work
method when carr ing out manuall .
13
2 WARNING Fire/
Electric shock
Choose an appropriate installation site. 13
3 CAUTION Injur Install unit on a level surface. 13
4 CAUTION Injur Take appropriate safet measures when
installing. 13
5 WARNING Fire Install equipment in a well-ventilated place 14
6 WARNING Fire/
Electric shock
Install in a dr location. 14
7 WARNING Explosion/Fire
Install in a location free of flammables and
explosives. 3
8 WARNING Fire/
Electric shock
Alwa s connect power cable to appropriate
facilit outlet or terminal. 14
9 WARNING Fire/
Electric shock
Handle power cable with care. 4
10 WARNING Fire/
Electric shock
Ground wire MUST be connected properl 3
11 WARNING Fire/
Electric shock
Never attempt to disassemble or modif unit. 4

8
1. SAFETY PRECAUTIONS
List of Residual Risks
Use
No. Degree of
risks
Risk
description
Protective measures taken b the user Relevant
page(s)
12 WARNING Explosion/Fire
DO NOT process explosive or flammable
substances 25
13 WARNING Fire/
Electric shock
Turn OFF (○) ELCB immediatel when an
abnormalit occurs. 3
14 WARNING Burn DO NOT touch hot/cold surfaces 4
15 CAUTION Fire
When unit stops operation due to power failure
etc., be sure to confirm the state of unit at the
time of power recover .
25
16 WARNING Injur DO NOT climb or place an objects on top of
equipment. 4
17 WARNING Fire DO NOT operate equipment during
thunderstorms 5
18 CAUTION Burn/
Injur
ALWAYS run equipment within specified
temperature range. 25

9
1. SAFETY PRECAUTIONS
List of Residual Risks
Dail inspection/maintenance
No. Degree of
risks
Risk
description
Protective measures taken b the user Relevant
page(s)
19 WARNING Fire/
Electric shock
Be sure to disconnect power cable before dail
inspection and maintenance. 27
20 WARNING Burn/
Injur
Perform inspections and maintenance when unit
and circulating water is at room temperature. 27
21 WARNING Fire/
Electric shock
NEVER disassemble or modif unit 27
Extended storage/disposal
No. Degree of
risks
Risk
description
Protective measures taken b the user Relevant
page(s)
22 WARNING Fire/
Electric shock
Turn OFF (○) ELCB and disconnect power cable
from facilit outlet or terminal. 29
23 CAUTION Injur Do not leave unit in a location where children
ma have access 29

10
2. COMPONENT NAMES AND FUNCTIONS
External View
Earth leakage circuit breaker
(ELCB)
Drain hose
Intake dust filter
Control panel
Reservoir Cover
Rating label
Serial number label
Condensate drain hose
(included)
Drip tra
(Please prepare separatel )
Hose clamp (included)
Rubber foot
Drain hose
Drain plug
Condensate drain hose
Power cable: 2 m with plug
115 V AC
Discharge port, Return port
Rigid hose coupling with 10
mm O.D. or flexible hose
coupling with 9 mm I.D.
(When attaching the supplied
hose nozzle)
* One-touch connector (L-t pe)
can rotate freel .
Hose nozzle (included)
One-touch connector (L-t pe)
Discharge
Return

11
2. COMPONENT NAMES AND FUNCTIONS
Circulation S stem
Pt
▼
▼
Return
(IN)
Discharge
(OUT)
Drain plug
Circulation pump
Water reservoir
Drain
Temperature sensor
Rc3/8
Rc3/8
Cooling coil

12
2. COMPONENT NAMES AND FUNCTIONS
Control panel
No.
Panel item
Description
① Temperature displa Shows current temperature, temperature setting,
parameters, etc.
②
Up ke Increases or decreases set value, scrolls items in user
setting, and switches setting items.
③
Down ke
④
Run/Stop ke Press to start or stop cooling operation.
⑤
Run/ Stop lamp Illuminates during cooling operation.
⑥ Set ke
Press to switch screen between current temperature
and temperature setting.
Press and hold to switch screen to the user setting.
⑦
Pump ke Press to start or stop cooling water circulation.
⑧
Pump lamp Illuminates during circulating operation.
⑨ Refrigerator lamp
(Hereinafter Ref lamp)
Flashes when the compressor dela timer operates.
Goes out when the timer ends after about three
minutes.
Illuminates while refrigerator is running.
⑩
S nchro lamp Not used for this unit.
⑪
Power switch Turn ON/OFF power.
Displa Characters
All characters displa ed when making settings are defined as follows
Character Letters Description
CAL Appears when entering offset temperature values.
See "Calibration Offset" (P.21)
Pon Appears when setting Auto-resume function.
See "Auto-resume Function" (P.22)
PUP
Appears when setting the circulation pump operation on temperature
limit alert.
See "Selection of Circulation Pump Operation at Temperature Upper
Limit Alert" (P.23)
dSP Appears when setting LED brightness.
See "LED Brightness Setting" (P.24)
① ② ⑨ ⑩
⑧
④ ③ ⑥ ⑦ ⑤ ⑪

13
3. PRE-OPERATION PROCEDURES
Installation Precautions
Choose an appropriate installation site.
DO NOT install unit:
・where installation surface is not completel level, not even or not clean.
・where flammable or corrosive gases/fumes ma be present.
・where ambient temperature will exceed 35 °C, will fall below 5 °C or will fluctuate.
・where liquid is assumed to splash on unit
・in excessivel humid or dust locations.
・in direct sunlight or outdoors.
・where there is constant vibration.
・in direct contact with the outside air
・where power suppl is erratic.
・where there is combustible material nearb .
・in the proximit of, in particular, directl below a fire alarm.
・where there is a risk of freezing or condensation.
Install unit in a location with sufficient space, as specified below.
* If unit is placed on either of the right and left walls, the other side shall be open
at least 50 cm.
Operating unit in a location with poor ventilation (under a laborator table, etc.), exhaust heat ma
be trapped and the cooling capacit ma be greatl degraded. In this case, use an exhaust unit to
dissipate the heat around unit. Estimated volume of exhaust* is as follows.
Approximate amount of waste
heat (kW)
0.6
* Approximate exhausts (m3/min) 2.0
Use cargo-handling equipment for transportation and installation.
Use cargo-handling equipment for transportation and installation. Transport unit with
sufficient number of people and an appropriate work method when carr ing out manuall .
Install unit on a level surface.
Install unit on level and even surface. Failure to do so ma cause abnormal vibrations or
noise, possibl resulting in complications and/or malfunction.
Take appropriate safet measures when installing.
Implement appropriate safet measures for the installation environment.
Unit ma tip over or fall, causing injur or death during an earthquake or other unforeseen
incident.
CF unit
15 cm or more
20 cm or more *
70 cm or more
20 cm or more *

14
3. PRE-OPERATION PROCEDURES
Installation Precautions
Alwa s connect power cable to appropriate facilit outlet or terminal.
Connect power cable to a suitable facilit outlet or terminal, according to the electrical
requirements.
Electrical
requirements: 115V AC 7.5 A (ELCB capacit : 10 A)
Standard test conditions with no load should be as follows. Operational voltage range:
±10%, Voltage range at which specified performance is guaranteed: ±10%, Frequenc
rating: ±1%.
*Check the line voltage on distribution board and properl evaluate whether to utilize a
line being shared b other equipment. If unit is not activated b turning on ELCB, take an
appropriate course of action, such as connecting unit to a dedicated power source.
Connecting multiple cables using a branch outlet or extension cord will cause voltage to
drop, leading to degraded temperature control or malfunction.
Power cable, terminal processing
Standard Cable end processing
3-core 2.0 mm2 (*1) With a plug
* The length of power cable is about 2 m. *1 Nominal cross-sectional area of conductor
Install equipment in a well-ventilated place
Do not operate unit with ventilating openings on unit (front, side, rear) obstructed.
Doing so ma result in excessive temperatures inside the unit control panel, causing
possible degraded CPU board performance, malfunction or fire.
Install in a dr location.
Install unit where it will be free from
liquid spra and other moisture.
Failure to do so ma result in
control mechanisms becoming wet,
causing malfunction, electric shock
and/or fire.

15
3. PRE-OPERATION PROCEDURES
Installation Precautions
Preparation of circulating water
Select circulating water according to the operating temperature.
If objective temperature is 10 °C or higher, use tap water or softened tap water *
If objective temperature is lower than 10 °C, use an antifreeze solution, such as
N brine® (dilute with tap water)
<Recommended Concentration> at 5 to 10 °C: Z1 30%
at -20 to 5 °C: Z1 60%
* Do not use pure water as circulating water
The read -to-use Raku-raku line of N brine® solutions from Yamato Scientific is
recommended. Contact original dealer of purchase for Raku-raku N brine® solutions.
Observe the following in order to prevent malfunction
・Replace circulating water entirel ever three months for tap water/ethanol solutions or
ever six months for N brine® solutions. Failure to do so ma cause failure in cooling coil
or circulation pump.
・Do not use liquids with viscosities higher than 300cp as this ma cause failure of the
circulation pump.
・Do not use liquids (caustic soda, sodium h drate, etc.) that will powder when evaporated.
・Degraded unit performance and/or pump overload ma be caused b using heav or
viscous circulating water, such as FluorinertTM, GaldenⓇ, etc.
・Do not use pure water as circulating water. It ma corrode the copper in the wetted part.
・Do not use corrosive liquid or circulating water that generates corrosive substances when
heated (FluorinertTM, etc.). When using a mixture of antiseptic agents, select it according
to the material of wetted part.
Material of wetted part
Reservoir: SS304, cooling coil: C1220T + Ni
FittingsSS304, C3604＋Ni, PP, Hoses: Si (milk-white)
Be careful when operating unit in an environment specified below.
・When using ethanol as antifreeze liquids, be sure to provide adequate ventilation and not
to allow an thing that ma be a source of fire or ignition (static electricit , etc.)
approached.
・Do not use circulating water that will be harmful when vapor is breathed in (meth l
alcohol, etc.) .
Product name Product
code Concentration
Standard
operating
temperature
Quantit
Raku-raku Solution
Z16005 756071
60% -20 °C
5L
Raku-raku Solution
Z16010 756072 10L
Raku-raku Solution
Z10005 756073
100% -30 °C
5L
Raku-raku Solution
Z10010 756074 10L
Raku-raku Solution
NFP6005 756075
60% -10 °C
5L
Raku-raku Solution
NFP6010 756076 10L

16
4. INSTALLATION PROCEDURES
Installation Procedure
1. Hose connection
Connect hoses to the discharge port and return port of the cooling water circulation s stem.
CF series units are an external closed loop circulation s stem.
Connection can be made with 10 mm O.D. rigid hose, or with 9 mm I.D flexible hose. With optional
nozzle attached, other hoses can be connected. Select an appropriate hose according to the
purpose of equipment use.
Attach a 20-mesh filter to the return port if there is a risk of dust or foreign objects mixed into the
circulating water returning from the external device. See Strainer set in "List of Options" (P.37)
・When using rigid hose with 10 mm O.D.
Put the supplied insert sleeve into rigid hose, and push the hose straight to the end while holding
the connection port with hand. Failure to use the insert sleeve ma lead to water leakage.
 To remove the hose, pull out the hose with the ring of the connection port pushed in.
・When using a flexible hose with 9 mm I.D.
1. Connect the flexible hose securel to the hose nozzle (included).
2. Push the hose nozzle straight to the end while holding the connection port with hand.
3. Secure the flexible hose with a hose clamp.
Hose nozzle
(Included)
Connection port
(IN/OUT common)
Hose removal
Push-in
Ring
Flexible hose (optional)
(9 mm I.D.)
Connection port
(IN/OUT common)
Rigid hose (optional)
(10 mm O.D.)
Insert sleeve (included with rigid hose)
Hose clamp
(included with flexible hose)