Yamato NeoCool Circulator CF301 User 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 CoolantforLow-TempApplications(ReferenceData) .........................................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,
electrocution, bone breaks/fractures or poisoning which, may cause
debilitation requiring extended hospitalization and/or outpatient treatment
（Note 3）Property damage is defined as damage to facilities, equipment, buildings or
other property.
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
DisconnectPower
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 objectivetemperatureis morethan10°C,usetapwaterorsoftened tapwater
If objective temperature is lessthan 10°C,useanantifreezesolution,suchasNaiburain.
⌘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
①Temperature controller
Control temperature of coolant reservoir with SEL key and
up/down arrow keys. (Range: -20 to 30°C)
②Refrigeration switch
Turns refrigeration system ON/OFF.
③Pump 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 -10 010 20 30
󰽏󰾣󲹵󳇾󲹶
󱫀󲹵󲺤󲹶
External device load range
Cooling Capacity (in watts)
Temperature (in °C)
-30
-20
-10
0
10
20
30
0 5 10 15 20 25 30 35
󱢳󲏄󰪍󲚌󳞥󳞦
󰹩󰾣󳞥󳇾󳞦
Time (in minutes)
Coolant Temperature (in °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 meters)
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 meters)
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
010 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%)
Temperature(°C)
Naiburain󲻚NFP
Naiburain󲻚Z1/Z1-K
Temperature (°C)