Yamato CF301 Instruction Manual

NeoCool Circulator

Model

CF301

Instruction Manual

- Second Edition -

Yamato Scientific America Inc．

Santa Clara，CA

.

Printed on recycled paper.

 Thank you for choosing the CF301 NeoCool

circulator from Yamato Scientific Co., Ltd.

 For proper equipment operation, please read

this instruction manual thoroughly before
use. Always keep equipment documentation
safe and close at hand for convenient future
reference.

Warning:

Read instruction manual warnings and
cautions carefully and completely before
proceeding.

Contents

1. SAFETY PRECAUTIONS ......................................................................... 1

 Explanation of Safety Symbols .................................................................................... 1

 Symbol Glossary ......................................................................................................... 2

 Warnings & Cautions ................................................................................................... 3

2. PRE-OPERATION PROCEDURES .......................................................... 5

 Installation Precautions ................................................................................................ 5

 Installation Procedure ................................................................................................ 10

3. COMPONENT NAMES & FUNCTIONS ................................................. 12

 Main Unit Overview.................................................................................................... 12

 Control Panel ............................................................................................................. 13

4. OPERATION PROCEDURE ................................................................... 14

 Main Operation ................................................................................................ .......... 14

 Cooling Curves (Reference Data) .............................................................................. 15

 Flow Rate/Lift Curves (Reference Data) .................................................................... 16

 Choosing Coolant for Low-Temp Applications (Reference Data) ......................................... 17

5. HANDLING PRECAUTIONS .................................................................. 18

6. INSPECTION & MAINTENANCE ........................................................... 20

7. STORAGE & DISPOSAL ....................................................................... 22

 Extended Storage / Unit Disposal .............................................................................. 22

 Disposal Considerations ............................................................................................ 22

8. TROUBLESHOOTING ........................................................................... 23

9. SERVICE & REPAIR .............................................................................. 24

10. SPECIFICATIONS ................................................................................ 25

11. WIRING DIAGRAM .............................................................................. 26

 CF301 Wiring Diagram .............................................................................................. 26

 Replacement Items .................................................................................................... 26

12. LIST OF HAZARDOUS SUBSTANCES ............................................... 27

- 1 -

1. SAFETY PRECAUTIONS

Explanation of Safety Symbols

A Word Regarding Symbols

Various symbols are provided throughout this text and on equipment to
ensure safe operation. Failure to comprehend the operational hazards and
risks associated with these symbols may lead to adverse results as explained
below. Become thoroughly familiar with all symbols and their meanings by
carefully reading the following text regarding symbols before proceeding.

Warning

Caution

Signifies a situation which may result in minor injury (Note 2)
and/or property damage (Note 3)

(Note 1) Serious injury is defined as bodily wounds, electrocution, bone

breaks/fractures or poisoning, which may cause debilitation requiring
extended hospitalization and/or outpatient treatment.

(Note 2) Minor injury is defined as bodily wounds or electrocution, which will not

require extended hospitalization or outpatient treatment.

(Note 3) Property damage is defined as damage to facilities, equipment, buildings or

other property. （ Note 1 ） Serious injury is defined as bodily wounds,

Symbol Meanings

Signifies warning or caution.
Specific explanation will follow symbol.

Signifies restriction.
Specific restrictions will follow symbol.

Signifies an action or actions which operator must undertake.
Specific instructions will follow symbol.

Signifies a situation which may result in serious
injury or death (Note 1)

- 2 -

1. SAFETY PRECAUTIONS

Symbol Glossary

Warning

General
Warning

Danger!: High

Voltage

Danger!:

Extremely Hot

Danger!: Moving

Parts

Danger!: Blast

Hazard

Caution

General Caution

Caution:

Shock Hazard!

Caution: Burn

Hazard!

Caution: Do Not

Heat Without

Water!

Caution: May

Leak Water!

Caution: Water

Only

Caution: Toxic

Chemicals

Restriction

General

Restriction

No Open Flame

Do Not

Disassemble

Do Not Touch

Action

General Action

Required

Connect Ground

Wire

Level Installation

Required

Disconnect Power

Inspect Regularly

- 3 -

1. SAFETY PRECAUTIONS

Warnings & Cautions

WARNING!

Never operate equipment near combustible gases/fumes.

Do not install or operate CF301 unit near flammable or explosive gases/fumes. Unit is NOT fire or blast
resistant. Negligent use could cause a fire/explosion. See “List of Hazardous Substances” (P.27).

Always ground equipment.

Always ground this unit properly to avoid electric shock.

DO NOT operate equipment when abnormalities are detected.

If smoke or unusual odors begin emitting from unit, or if any other abnormalities are detected, terminate
operation immediately, turn off main power switch (Earth Leakage Breaker - “ELB”) and disconnect
power cable. Continued operation under such conditions may result in fire or electric shock.

DO NOT operate with bundled or tangled power cable.

Operating unit with the power cable bundled or otherwise tangled, may cause power cable to overheat
and/or catch fire.

DO NOT damage power cable.

Damaging the power cable by forcibly bending, pulling or twisting may cause fire or electric shock to the
operator.

DO NOT handle flammable substances without proper ventilation.

Be sure there is adequate ventilation when working with certain flammable substances (such as
ethanol, etc.), which evaporate quickly at or below room temperature, and emit flammable fumes.
Insufficient ventilation may cause a fire or explosion. See “List of Hazardous Substances” (P.27).

NEVER disassemble or modify equipment.

Attempting to dismantle or modify unit in any way, may cause malfunction, fire or electric shock.

Keep upright.

Never tip or place unit on its side while moving or transporting. Damage to refrigeration system may
result. If briefly 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.

- 4 -

1. SAFETY PRECAUTIONS

Warnings & Cautions

CAUTION!

DO NOT operate equipment during thunderstorms.

In the event of a thunderstorm, terminate operation and turn off main power switch (ELB) immediately. A
direct lightning strike may cause damage to equipment, or result in fire or electric shock.

DO NOT touch coolant.

CF301 chillers are designed to maintain coolant fluid at temperatures below freezing. Touching or
handling coolant in the fill reservoir with bare hands or fingers may result in severe frostbite. Do not
touch!

DO NOT touch condenser fins.

Edges of condenser fins are very sharp. Do not contact with bare hands or skin. Laceration injuries may
result.

- 5 -

2. PRE-OPERATION PROCEDURES

Installation Precautions

WARNING!

1. Ground wire MUST be connected properly.

・ Ground wire must be connected to a proper grounding line or terminal in order to prevent

electric shock.

・ Never connect ground wire to gas lines or water pipes.
・ Never connect ground wire to telephone grounding lines or to lightning conductor rods.

Doing so may result in fire or electrical shock.

・ Never insert multiple plugs into a single outlet. Doing so may result in power cable

overheating, fire or drop in voltage.

Connect to grounded outlet

Outlet with ground receptacle
When no ground terminal is found:

● Grounding to Electrical Equipment Technical

Standards, Section 19, class D (Grounding
Resistance Max. 100Ω) is required in Japan.
Contact a local dealer, electrician, or Yamato
Sales office for location-specific electrical
requirements.

Use ground adapter for ungrounded outlets

Outlet with no ground receptacle
Ground adapter

● Insert grounded plug into ground adapter.

Connect grounding wire (green) from ground
adapter to a ground terminal.

2. Place appropriately.

 Do not place CF301 unit:

・ where flammable or corrosive gases/fumes will be generated.
・ where external temperature will exceed 35ºC, will fall below 5ºC or will fluctuate.
・ in excessively humid or dusty locations.
・ where there is constant vibration.
・ where power supply is erratic.
・ in direct sunlight or outdoors

 Place CF301 in a location with sufficient space, and venilation as specified as below.

More than

20cm

More than

20cm

Front side

More than 40cm

Main

Unit

Ungrounded outlet
100V AC only

Ground adapter
Grounded plug

Grounding wire

with Y-terminal

W

ｗ

G

Grounding prong

Grounded plug

- 6 -

2. PRE-OPERATION PROCEDURES

Installation Precautions

3. Place in a location free of flammables and explosives.

・ Never place or operate near flammables or

explosives. BE units are NOT fire or blast
resistant. Simply switching the main power

switch (ELB) “ON” or “OFF” can produce a

spark, which could relay during operation,
causing a fire or explosion when near
flammable or explosive fluids, chemicals or
gases/fumes.

See “List of Hazardous Substances” (P.27).

4. DO NOT disassemble or modify.

5. Place on a level surface.

 Attempting to disassemble or modifiy

this unit in any way may result in
malfunction, fire or electric shock.

 Place unit on a level and even surface.

Failure to do so may result in abnormal
vibrations or noise and damage to the
refrigeration system.

Approximate unit weight: 38Kg

Handle with care. Transportation and installation should always be performed by two or more
people.

- 7 -

2. PRE-OPERATION PROCEDURES

Installation Precautions

6. Place in a dry location.

CAUTION!

7. Connect to a properly rated power supply.

 Connect power cable to a suitable facility outlet or terminal, according to the following

electrical requirements.

Power requirements:

CF301: 115V AC, 50/60Hz, 5.6A

NOTE)

Check the line voltage on outlet or terminal to be used and properly evaluate whether to utilize
a line being shared by other equipment. If the unit is not activated by turning on the main
power switch (ELB), take an appropriate course of action, such as connecting the unit to a
dedicated power source.

If multiple power cables are connected to a single outlet, input voltage to unit may drop,
causing degraded cooling and temperature control performance.

8. Install in a safe, well-ventilated area.

 In the event of an earthquake or other unforeseen incident, equipment may unexpectedly shift

or fall, causing injury. Taking preventative steps to install unit in a safe location, away from
room access doors and out of harm’s way is strongly recommended.

 Install unit so that side panel heat vents (see “Main Unit Overview” on P.12 for location) are

unobstructed and allowed to sufficiently diffuse heat. Failure to do so may result in excessive
temperatures inside the unit control panel, causing possible degraded CPU board
performance, malfunction or fire. See installation specifications on P.5 above.

Place unit where it will be free from liquid spray
and other moisture. Failure to do so may result
in control mechanisms becoming wet, causing
malfunction, electrical shock and/or fire.

- 8 -

2. PRE-OPERATION PROCEDURES

Installation Precautions

9. Handle power cable with care.

 Never operate unit with power cable bundled or tangled; and do not modifiy, bend, forcibly

twist or pull on power cable. Doing so may cause fire and/or electrical shock.

 Do not risk damage to power cable by positioning it under desks or chairs, or having it pinched

between objects. Doing so may cause fire and/or electrical shock.

 Do not place power cable near kerosene/electric heaters or other heat-generating devices.

Doing so may cause power cable insulation to overheat, melt and/or catch fire, which may
result in electric shock.

 Turn off main power switch (ELB) immediately and disconnect from facility terminal or outlet, if

power cable becomes partially severed or damaged in any way. Failure to do so may result in
fire or electric shock. Contact a local dealer or Yamato sales office for information about
replacing power cable if it is damaged.

 Always connect power cable to appropriate facility outlet or terminal.

10. Coolant hose connections.

 When connecting to an external target device,

secure all hose connections adequately to
prevent leaks.

 Closing the circulation path with a solenoid valve

or throttle valve may cause pump to malfunction
and leak, if it is left closed.

 Always keep outlet stop valve open when pump

is in operation.

 Do not excessively restrict flow. Keep flow

maintained at 10% over maximum flow rate (see
“Specifications” on P.25), as a general rule.

 In the event that external target device is

equipped with a solenoid valve, or if circulation
flow is less than 10% of maximum pump flow
rate, place a bypass circuit in the circulation path
between the two units (see illustration to the
right).

CF

301

Return

Outlet

Hose

Bypass Line

Connection Ports

Hose Fitting Outer Diameter: 10.5mm

.:

Solenoid Valve

- 9 -

2. PRE-OPERATION PROCEDURES

Installation Precautions

11. Select coolant based on operating temperature.

・Choose a coolant fluid relative to working temperature.

If objective temperature is more than 10°C, use tap water or softened tap water
If objective temperature is less than 10°C, use an antifreeze solution, such as Naiburain.

⌘ DO NOT use purified and/or deionized water as coolant.

The ready-to-use Raku-raku line of Naiburain solutions from Yamato Scientific is
recommended.
Contact a local dealer or Yamato sales office to purchase Raku-raku Naiburain solutions.

Observe the following in order to prevent malfunction and personal injury:

・ Coolant concentration may become decreased after several months of use.

Check anti-freeze concentration or change coolant entirely approximately every 6 (six) months.

・ If only tap water is being employed as coolant, change entirely approximately every 3 (three)

months.

・ Do not use well water, purified water or deionized water as coolant.
・ Degraded unit performance and/or pump overload may be caused by using heavy or viscous

coolants, such as Fluorinert (by 3M), GALDEN (by Daitoku Tech), etc.

・ Never use the following substances in CF unit.

1) Corrosive chemicals

2) Solutions which become corrosive when heated, such as Fluorinert (by 3M), etc.

3) Solutions which emit harmful fumes, such as methanol
If an antiseptic agent is to be used, confirm material constitution of components with which fluid
will be in contact and whether it will harm these components, before selecting.

(Major fluid contact component composition: Stainless Steel, Copper w/nickel plating, Silicon

Rubber)

・ Assure sufficient ventilation when ethanol or other highly flammable fluids are used as

anti-freeze coolants. Never operate unit near open flame or other ignition sources (static
electricity, etc.).

Name

Product

Code

Concentration

(Wt%)

Min. STD

Temperature

Container Size

( in liters)

Raku-raku

Solution: Z16005

756071

60󳞣

-20󳇾
5L

Raku-raku

Solution: Z16010

756072

10L

Raku-raku

Solution: Z10005

756073

100󳞣

-30󳇾
5L

Raku-raku

Solution: Z10010

756074

10L

Raku-raku

Solution: NFP6005

756075

60󳞣

-10󳇾
5L

Raku-raku

Solution: NFP6010

756076

10L

- 10 -

2. PRE-OPERATION PROCEDURES

Installation Procedure

1. Move unit into position.

 CF301 models have rubber feet. Be sure to place unit where all four feet come into contact with the

floor.

2. Check drain/overflow caps.

 Check to make sure that drain and overflow ports are capped.

3. Connect hoses.

 CF301 units are an external closed loop circulation system. Make all connections free of coolant leaks

and be sure to connect outlet (OUT) and return (IN) properly. Hose fittings are not included. Purchase
appropriate fitting options separately. (fitting valve outer diameter is Rc3/8)

4. Circulation line precautions.

 Be sure to confirm flow direction and make connections accordingly.
 Be sure that circulation lines are the minimum required lengths. Flow resistance increases, while

cooling efficiency is decreased in relation to longer circulation line length. See reference data on P.16
and specifications on P.25 for pump capacity.

 Be sure to use proper hoses in circulation lines. DO NOT connect circulation lines to gas or water

plumbing lines.

 Be sure that intended external circulation device conforms to proper circulation flow and pressure

levels. Otherwise equipment damage, malfunction or other mishap may result.

DO NOT connect CF301 unit to external devices with supplemental powering mechanisms which

affect coolant flow or circulation.

CF301

Return

(IN󳞦

Outlet

󳞥OUT󳞦

Hose

Hose

Drain Cap

Overflow Cap

External Device

(connected in closed loop)

- 11 -

2. PRE-OPERATION PROCEDURES

Installation Procedure

5. Connect power cable.

 Be sure power switch, refrigeration switch and pump switch are turned "OFF", then plug power cable

into outlet.

6. Select coolant.

 Refer to reference data on P.17.

7. Add coolant.

 Remove reservoir cover and add coolant until cooling coil is entirely immersed and level reaches

indication arrow. When adding coolant, be sure to remove the overflow cap from the left side of unit
and place an appropriate basin beneath overflow outlet.

 Turn on power and pump switch to begin circulating coolant. Confirm that fluid circulates normally.

Coolant level in reservoir will decrease as coolant circulates to external device. Add coolant as
needed.

 When coolant is restored to proper level, turn OFF power switch.

8. Replace reservoir cover.

Upper fill limit indicator

Overflow drain

- 12 -

3. COMPONENT NAMES & FUNCTIONS

Main Unit Overview

Reservoir Cover

Coolant Reservoir

Control Panel

Intake Filter

Rating, Production &
Warning Stickers

Power Switch (ELB)

Rubber Foot

Outlet

w/hose fitting

& stop valve

(φ10.5mm)

Return

w/hose fitting

(φ10.5mm)

Power Cable
w/plug

Drain

Overflow

- 13 -

3. COMPONENT NAMES & FUNCTIONS

Control Panel

Item

Function

① Temperature controller

Control temperature of coolant reservoir with SEL key and
up/down arrow keys. (Range: -20 to 30°C)

② Refrigeration switch

Turns refrigeration system ON/OFF.

③ Pump switch

Turns circulation pump ON/OFF.

ON

OFF

REFRIG

PUMP

③

②

①

- 14 -

4. OPERATION PROCEDURE

Main Operation

1. Turn "ON" main power switch (ELB).

ON

2. Set temperature.
Press “SEL”. The SV indication lamp illuminates.

Set desired temperature using “▲▼”. Press “SEL”
once again after temperature has been set and
confirmed.

SEL

SV
C1

3. Turn on refrigeration system.
After confirming that C1 indicator lamp (control
output 1) is illuminated, turn the refrigeration switch
ON.
Unit begins operation approximately 3 minutes, 30
seconds from moment refrigeration switch is turned
ON. This delay is NOT a malfunction/failure.

There may be a slight time lag in relation to C1
lamp on/off and refrigeration system activation/
deactivation.

ポン プ

冷凍 機

切

入

SEL

4. Turn on circulation pump.
After confirming connections are secure and
reservoir is filled to the proper level, turn the pump
switch ON.

Be sure the stop valve on the outlet fitting is

open when the pump is turned on.

ポン プ

冷凍 機

切

入

SEL

5. End operation.
Turn off pump, refrigeration switch, and main power
switch.

PUMP

REFRIG

ON

OFF

PUMP

REFRIGE

ON

OFF

- 15 -

4. OPERATION PROCEDURE

Cooling Curves (Reference Data)

The following graphs show cooling capacity and characteristics. Findings may vary with external
device, external temperature, etc. Use graph values as reference only.

Analysis provisions (cooling capacity, cooling characteristics)

・ Room temperature: 23°C, external load: none, power supply: 100V AC
・ CPM: 50Hz (cooling capacity/characteristics), 50/60Hz (flow rate/lift)
・ Coolant: 60% solution of ethylene glycol (cooling capacity/characteristics), tap water (flow

rate/lift)

・ Coolant quantity: 3L

⌘ Lift conversion: 1.0MPa ≒ 10kg/cm2 = 100.0m

Cooling Capacity

Cooling Characteristics

0

100

200

300

400

500

600

-20 -10 0 10 20 30

󰽏󰾣󲹵󳇾󲹶

󱫀󲹵󲺤󲹶

External device load range

Cooling

Capa

city (in watts)

Temperature (in °C)

-30

-20

-10

0

10

20

30

0 5 10 15 20 25 30 35

󱢳󲏄󰪍󲚌󳞥󳞦

󰹩󰾣󳞥󳇾󳞦

Time (in minutes)

°C)

- 16 -

4. OPERATION PROCEDURE

Flow Rate/Lift Curves (Reference Data)

Flow Rate vs. Lift curve (based on hose fitting size of Φ10.5mm)

Tap Water at 20°C

0 1 2

3

4

5

6

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

Flow Rate (liters/min.)

Input Power󳞷100V 50Hz

Input Power󳞷100V 60Hz

Lift

(in m

eters

)

60% Ethylene Glycol Solution at 20°C

0 1 2 3 4

5

6

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

Input power󳞷100V 50Hz

Input Power󳞷100V 60Hz

Lift

(in m

eters

)

Flow Rate (liters/min.)

- 17 -

4. OPERATION PROCEDURE

Choosing Coolant for Low-Temp Applications (Reference Data)

An anti-freeze coolant solution is required for applications below 10°C. Naiburain® products are
recommended. Select concentration based on working temperatures below 10°C.
See “Handling Precautions” on P.18.

Ethylene Glycol

Characteristics

Boiling Point

197.8°C

Freezing Point

-13.0°C

Flash Point

121.0°C

Ignition Point

410.0°C

Specific Gravity (at 20°C)

1.1188

Specific Heat (at 20°C)

0.561cal/g・°C

Latent Heat of Evaporation

191cal/g・°C

Viscosity

0.021Pa・s (20.93CP)

Steam Pressure (at 25°C)

16.0Pa (0.12ｍHg)

Ethanol (Warning: LOW FLASH POINT!)

Characteristics

Molecular Weight

46.068

Boiling Point

78.32°C

Freezing Point

-114.5°C

Flash Point

13°C (enclosed),
18°C (unenclosed)

24.7°C (60% solution at

25°C)

Ignition Point

439°C

Specific Gravity (at 20°C)

0.7893

Specific Heat (at 20°C)

0.579cal/g・°C

Viscosity

1.0826cp (at 25°C)

Naiburain®

Product Name

Characteristic

Z1、Z1-K

RH

NFP

50Wt%

100 Wt%

50Wt%

100 Wt%

50Wt%

100 Wt%

Boiling Point (in °C)

104

117

105

118

102

107

Specific Resistance
(in Ω・cm at 25°C)

625

1250

270

440

530

970

Conductivity (in S・m

-1

at 25°C)

0.160

0.080

0.370

0.227

0.189

0.103

Steam Pressure (KPa at 20°C)

1.7

0.5

1.7

0.5

2.3

1.3

Freezing Point (°C)

-21

Below -50

-21

Below -50

-13.5

Below -50

Specific Gravity (at 20°C)

1.05

1.10

1.07

1.134

1.026

1.048

Viscosity (mPa･s at 20°C)

2.5

9.5

2.5

9.5

2.6

9.4

Specific Heat (cal/g at 20°C)

0.850

0.670

0.850

0.670

0.773

0.642

0

-10

-20

-30

-40

-50
0 10 20 30 40 50 60 70 80 90 100

0

-10

-20

-30

-40

-50

󳛹󳛓󳜅󳜘󳛓󳜢󱂑󰕹󳞥󲻄󲻁󳞣󳞦


󱢷
󰾣
󰕹
󴐢

󳇾
󴐣

󳛹󳛓󳜅 󳜘󳛓󳜢 󳟋󳟃 󳟍

󳛹󳛓󳜅 󳜘󳛓󳜢 󳟗1󳞩󳟗󳞮󲹺󳟈

󳠢󳠏󳠩 󳠻󳠴󳠏󳠺 󲺧1󳞩󲺧1󲹺󲺘 󳙻󳚹󳚤󳠢 󳠏󳠩󳠻 󳠴󳠏󳠺󲺛 󲺓󲺝󳚟 󱢷󰾣 󰕹

Concentration (Wt%)

Ethylene Glycol Freezing Points

Naiburain󲻚 Freezing Points

Naiburain󲻚 Concentration (Wt%)

(°C)

Naiburain󲻚 NFP

Naiburain󲻚 Z1/Z1-K

Temperature

(°C)

- 18 -

5. HANDLING PRECAUTIONS

WARNING!

DO NOT operate equipment when abnormalities are detected.

If unit begins emitting smoke or abnormal odors for reasons unknown, turn off main power (ELB)
immediately, disconnect power cable from power supply, and contact a local dealer or Yamato
sales office for assistance. Continued use without addressing abnormalities may cause fire or
electric shock, resulting in serious injury or death. Never attempt to disassemble or repair unit.
Repairs should always be performed by a certified technician.

DO NOT handle flammable substances without proper ventilation.

Be sure there is adequate ventilation when working with certain flammable substances (such as
ethanol, etc.), which evaporate quickly at or below room temperature, and emit flammable fumes.
Little or no ventilation may cause a fire or explosion resulting in serious injury or death. Refer to
“List of Hazardous Substances” (P.27).

CAUTION!

Reservoir capacity.

CF301 coolant reservoir capacity is approximately 3 liters. Unit may overflow if reservoir is filled
beyond capacity or fill indicator.

DO NOT climb on equipment.

Do not attempt to climb onto unit or substitute it for a proper step ladder. Units are not designed
to support bodily weight and damage may result. In addition, unit may become unstable and tip
over or fall resulting in equipment damage, serious injury or death.

DO NOT place objects on equipment.

Do not place any objects on unit. Doing so may cause unit to become unstable and tip over,
resulting in possible equipment damage, injury or death.

Wash coolant reservoir before use.

Although CF units are cleaned thoroughly before shipping from Yamato’s manufacturing facility,
washing out the reservoir once again before use is recommended to eliminate any debris or
contaminants accumulated during shipping.

DO NOT operate equipment during thunderstorms.

In the event of a thunderstorm, turn off main power switch (ELB), and disconnect power cable
immediately. A direct lightning strike may cause equipment damage fire or electric shock,
resulting in serious injury or death.

Overnight and extended storage.

Whenever unit is not in operation, left standing overnight or placed in storage, always turn off
main power switch and disconnect power cable. Drain coolant from reservoir and lines if unit is to
be put in storage.

Circulation pump.

 Never operate the circulation pump dry (without fluid in reservoir). Damage or malfunction may

result.

 Keep coolant reservoir covered and do not allow any debris to enter and remain in reservoir.

Damage to pump may result.

 If solenoid valve and throttle are in the circulation path, do not leave valve closed or apply too

much throttle. Damage to pump may result.

 Keep coolant flow rate at 10% over maximum flow specification. See P.25.

- 19 -

5. HANDLING PRECAUTIONS

Power failures.

In the event of a power failure, unit automatically returns to point of operation where power loss
occured and continues operating from that point when power is restored. If automatic restore
feature is not desired after power is restored, turn main power switch OFF.

Refrigeration system ON delay timer.

CF301 units feature an ON delay timer which delays pump startup for approximately 3 minutes,
30 seconds. This feature extends pump life and safeguards pump from:

1. Under-lubrication at startup

2. Abrupt power surges at startup

3. Overloading at startup

4. Motor coil burnout from excessive wear and tear

Thermal protection switch.

To keep circulation pump from overheating and burning out, CF301 units feature a thermal
protection switch which trips and cuts power to circulation pump when motor temperature
becomes excessive. Pump automatically restarts after sufficiently cooling down.

Frost deposits.

Frost may form around unit outlet and return ports depending on operation and external
temperature proportion. When this occurs, frost deposits may be wiped away with a dry cloth.

Hose replacement.

Replacing silicone hoses approximately once every two years or when hoses become
discolored is recommended. Contact a local dealer or Yamato sales office for replacements.

Changing coolants.

When changing to a different type of coolant, be sure to drain previous coolant from reservoir
and lines completely before adding new coolant.

- 20 -

6. INSPECTION & MAINTENANCE

WARNING!

 Turn off ELB and disconnect power cable before conducting inspection and maintenance, unless

otherwise necessary.

 Inspect and perform maintenance on unit when coolant in reservoir is at room temperature.
 Do not attempt to disassemble unit.
 Do not touch the condenser fins with bare hands or fingers.

CAUTION!

 Clean unit using a soft, damp cloth.
 Never use benzene, paint thinner, scouring

powder, scrubbing brush or other abrasives and
solvents to clean unit. Superficial damage and/or
discoloration, as well as deformity to some
components may result.

Monthly maintenance.

 Test main power switch (ELB) function.

1. Connect power cable.

2. Turn power switch ON.

3. Depress the red test switch with a fine-point object, such
as a ballpoint pen, etc.

4. If power switch turns OFF without delay, it is functioning
normally.

Clean filter & condenser fins regularly.

 A clogged intake filter and condenser fins will degrade cooling

performance and may result in refrigeration system malfunction.
Intake filter maintenance and cleaning intervals will vary
depending on usage and operating environment. Be sure to
clean filter and condenser fins periodically.

 Loosen the 4 mounting screws attaching intake cover and remove.

Clean dust from condenser fins using a vacuum cleaner or other
suction-type cleaning device.

 Remove filter from intake cover and wash or clean accumulated dust

with a vacuum cleaner.

 Replace filter and re-install intake cover.

Be careful not to bend or crush condenser fins while cleaning.

- 21 -

6. INSPECTION & MAINTENANCE

Reservoir and coolant maintenance.

Remove any foreign substances and debris from coolant reservoir as frequently as possible.
Circulation pump malfunction may result if allowed to remain.
Wear proper gloves when performing coolant and reservoir maintenance .

Hose insulation (sold separately) replacement.

Replace hose insulation material approximately once every 2 (two) years to keep unit in proper
working order.
Call a local dealer or Yamato sales office for replacements.

Change coolant regularly.

Change coolant fluid entirely every 3 months for tap water/ethanol solutions or every 6 months for
Naiburain® solutions.
Dust, hair, algae, mineral deposits and other substances may accumulate in circulation pump, if
the above guidelines are not observed, resulting in decreased pump performance, malfunction or
failure.

Contact a local dealer or Yamato sales office for further assistance.

- 22 -

7. STORAGE & DISPOSAL

Extended Storage / Unit Disposal

CAUTION!

Extended storage

To store or place unit out of service:

●Turn off power switch and disconnect power cable.

●Drain coolant.

WARNING!

Disposal

●CF301 units use a Freon alternative refrigerant. Observe the Freon Collection Act and request the
assistance of a professional.

●Place out of reach of children.

●Dispose of as bulky or industrial waste.

Disposal Considerations

Dispose of or recycle this unit in a responsible and environmentally friendly manner.
Yamato Scientific Co., Ltd. strongly recommends disassembling unit, as far as is possible, in order to
separate parts and recycle them in contribution to preserving the global environment.

Major components and materials, comprising CF301 units are listed in the table below:

Component

Composition

Main

Casing

Galvanized steel paneling with baked-on melamine resin coating

Coolant reservoir

Stainless steel

Cover

Stainless steel, Resin

Production stickers

Polyester (PET) resin film

Corner bumpers

Alkylbenzenesulfied (ABS) resin

Rubber feet

Synthetic rubber

Electrical

Switches, Relays

Resin composites, etc.

Power cable & wiring material

Synthetic rubber composites, copper, nickel, etc.

Fan motor

Aluminum, other synthetics

Pump

Iron alloys, copper, resin, ceramic, etc.

Refrigeration system

Compressor

Iron alloys, copper, etc.

Condenser

Iron, copper, aluminum

Cooling mechanism

Nickel plated copper

Plumbing lines

Copper alloys, etc.

Coolant reservoir

Drain, overflow and internal plumbing

Silicon rubber

Connection components

Resin

Hose insulation

Polyurethane sponge

Refrigerant

R404A

Consult specialist for handling refrigerant.

- 23 -

8. TROUBLESHOOTING

Troubleshooting Table

Symptom

Possible Causes

Temperature controller light does not
illuminate.

 Power cable is not properly connected to outlet.
 Power failure in progress.
 Main power switch (ELB) is turned “OFF”

Temperature does not fall.

 Condenser fins need cleaning.
 Thermal capacity of coolant has been exceeded.
 External temperature exceeds 35°C.
 Intake or heat vents obstructed.
 Power supply voltage has dropped below rating.

Refrigeration system will not restart.

 Refrigeration system is in overload. Turn off refrigeration

switch immediately, see possible causes for “temperature
does not fall”, above, and turn on refrigeration system again
after several minutes.

Coolant fluid does not circulate.

 Outlet stop valve is closed.
 Circulation path is closed, restricted or otherwise obstructed.
 Coolant fluid is too heavy or viscous.

Error Table

Error Sign

Cause

Remedy

UUUU

Sensor error

Check whether sensor is disconnected or severed.

FALR

Temperature controller
malfunction

Terminate operation. Turn off power immediately, and call
for service

If problems persist, turn off power, disconnect power cable and call for service.

- 24 -

9. SERVICE & REPAIR

Requests for Repair

When a problem occurs, terminate operation immediately, turn off main power switch (ELB) and
disconnect power cable.
Contact a local dealer or Yamato sales office for assistance.

The following information is required for all repairs.

● Model name

● Serial Number

● Date (year/month/day) of purchase

● Description of problem in as much detail as possible

Guaranteed Supply Period for Repair Parts

Guaranteed maximum supply period for repair parts is 7 (seven) years from date of discontinuation for
CF301 NeoCool chillers. “Repair parts” is defined as components which, when installed, allow for
continued unit operation.

See production/rating sticker on
unit. Refer to P.12 for location.

- 25 -

10. SPECIFICATIONS

Model

CF301

Circulation system

Closed-loop circulation

Operational external temperature range

5 to 35°C

Performance

⌘ 1

Temperature setting range

-20 to room temp

Refrigeration capacity ⌘ 2
(AC100V 50Hz)

(kcal/h･W･liquid temp)

Approx. 450W (387kcal) at10°C

Approx. 360W (309kcal) at 0°C

270W (232kcal) at -10°C

Pump (*)

Max.

flow rate ⌘ 3

50Hz: Approx. 6.26L/min
60Hz: Approx. 7.21L/min

(discharge pressure: 0kpa)

Max.

flow pressure ⌘ 3

50Hz: Approx. 40kpa
60Hz: Approx. 56kpa

(flow rate: 0L/min)

Lift range

4.0m/5.6m

Configuration

Temperature control system

Refrigerator ON/OFF

Temperature sensor

T thermo couple (with SUS protection tube)

Temperature setting
/display system

Digital setting/LED display

Refrigeration system

Air cooling, 450W

Refrigerant

R404a

Cooling coil

Nickel plated copper

External circulation nozzle

Outer diameter: 11mm (discharge and return)

with hose fitting

Circulation pump

Magnetic pump 10/15W

Reservoir
Material

SUS304

Dimensions

151×151×177mm

φ300×235mm

φ370×400mm

Capacity

Approx. 4L

(Fluid capacity: 3L)

Safety devices

Electric leakage breaker, Refrigeration overload relay maintenance circuit,

Pump thermal protection switch, Refrigeration system ON delay timer

Other functions

Overflow, Drain, Fluid level meter

Standard

Measur

ements

External dimensions ⌘ 4
(W×D×H mm)

228×508×756 (798.5)

Weight

Approx. 38Kg

Power supply ⌘ 5

115V AC, 50/60Hz, 5.6A (15A)

Included items

Instruction manual, Circulation hose (1.5m)×2, Wire hose clamp ×2

Cover

⌘ 1 Performance based on operation at room temperature (23°C±5°C), 65%RH±20% humidity, using

water as coolant medium, no external load.

⌘ 2 Coolant medium: 60% solution of ethylene glycol and water
⌘ 3 Coolant medium: tap water
⌘ 4 Value in brackets includes flow adjustment valve. All other protrusions excluded.
⌘ 5 Value in brackets is breaker (power switch) capacity.

- 26 -

11. WIRING DIAGRAM

CF301 Wiring Diagram

Symbol

Part name

Symbol

Part name

ELB

Earth leakage breaker

T1

Delay timer relay

TC1

Temperature controller

C1

Operation condenser

S1

Refrigeration switch

C2

Start condenser

S2

Pump switch

FM1/FM2

Fan motor

X1

Relay

RF

Refrigeration unit

P

Pump

TF

Transformer

TM1

Terminal

OLP

Over load protector

Replacement Items

Item

Part No.

Specification No.

Manufacturer

1

Filter

CF30140200

CF301-40200

Yamato

2

Drain Cap

CF30140190

CF301-40190

Yamato

3

Overflow Cap

FE72T41000

FE72T-41000

Yamato

- 27 -

12. LIST OF HAZARDOUS SUBSTANCES

Never process any explosive, flammable samples and also samples contained with those
substances.

Explosive

Substance

①Nitroglycol, Glycerine trinitrate, Cellulose Nitrate and other explosive nitrate esters

②Trinitrobenzen, Trinitrotoluene, Picric Acid and other explosive nitro compounds

③Acetyl Hydroperoxide, Methyl Ethyl Ketone Peroxide, Benzoyl Peroxide and other organic

peroxides

④Metallic Azide, including Sodium Azide, etc.

ExplosiveSsub

stances

①Metal “Lithium” ②Metal “Potassium” ③Metal “Natrium” ④Yellow Phosphorus
⑤Phosphorus Sulfide ⑥Red Phosphorus⑦Phosphorus Sulfide
⑧Celluloids, Calcium Carbide (a.k.a, Carbide)⑨Lime Phosphide⑩Magnesium Powder
⑪Aluminum Powder ⑫Metal Powder other than Magnesium and Aluminum Powder
⑬Sodium Dithionous Acid (a.k.a., Hydrosulphite)

Oxidizing

Substances

①Potassium Chlorate, Sodium Chlorate, Ammonium Chlorate, and other chlorates

②Potassium Perchlorate, Sodium Perchlorate, Ammonium Perchlorate, and other perchlorates

③Potassium Peroxide, Sodium Peroxide, Barium Peroxide, and other inorganic peroxides

④Potassium Nitrate, Sodium Nitrate, Ammonium Nitrate, and other nitrates

⑤Sodium Chlorite and other chlorites

⑥Calcium Hypochlorite and other hypochlorites

Flammable

Substances

① Ethyl Ether, Gasoline, Acetaldehyde, Propylene Chloride, Carbon Disulfide, and other

substances with ignition point at a degree 30 or more degrees below zero.

②n-hexane, Ethylene Oxide, Acetone, Benzene, Methyl Ethyl Ketone and other substances with

ignition point between 30 degrees below zero and less than zero.

③Methanol, Ethanol, Xylene, Pentyl n-acetate, (a.k.a.amyl n-acetate) and other substances with

ignition point between zero and less than 30 degrees.

④Kerosene, Light Oil, Terebinth Oil, Isopenthyl Alcohol(a.k.a. Isoamyl Alcohol), Acetic Acid and

other substances with ignition point between 30 degrees and less than 65 degrees.

Combustible

Gas

Hydrogen, Acetylene, Ethylene, Methane, Ethane, Propane, Butane and other gases
combustible at 15℃ at one air pressure.

(Source: Appendix Table 1 of Article 6 of the Industrial Safety and Health Order in Japan)

Limited liability

Always operate equipment in strict compliance to the handling and operation procedures set
forth by this instruction manual.
Yamato Scientific Co., Ltd. assumes no responsibility for malfunction, damage, injury or death
resulting from negligent equipment use.
Never attempt to disassemble, repair or perform any procedure on CF301 unit which is not
expressly mandated by this manual. Doing so may result in equipment malfunction, serious
personal injury or death.

Notice

◆Instruction manual descriptions and specifications are subject to change without

notice.

◆Yamato Scientific Co., Ltd. will replace flawed instruction manuals (pages missing, pages

out of order, etc.) upon request.

Instruction Manual

NeoCool Circulator
Model CF301

Second Edition May 25, 2017
Revised:

Yamato Scientific America Inc.

925 Walsh Avenue, Santa Clara, CA 95050
Phone: [phone]

http://www.yamato-usa.com