Julabo CF30 User manual

19534866-V5.doc 08.08.17
English
Operating
manual
Cryo-Compact Circulators
The Economy-Series
CF30 CF40
JULABO USA, Inc.
884 Marcon Boulevard
Allentown, PA 18109
Phone: [phone]
Fax: [phone]
info.us@ julabo.com
www.julabo.com

2
Congratulations!
You have made an excellent choice.
JULABO thanks you for the trust you have placed in us.
This operating manual has been designed to help you gain an understanding of the operation
and possible applications of our Cryo-Compact Circulators. For optimal utilization of all
functions, we recommend that you thoroughly study this manual prior to beginning operation.
The JULABO Quality Management System
Temperature control devices for research and industry are developed,
produced, and distributed according to the requirements of
ISO 9001:2008. Certificate Registration No. 01 100044846
Unpacking and inspecting
Unpack the Cryo-Compact Circulator and accessories and inspect them for possible transport
damage. Damage should be reported to the responsible carrier, railway, or postal authority,
and a damage report should be requested. These instructions must be followed fully for us to
guarantee our full support of your claim for protecting against loss from concealed damage.
The form required for filing such a claim will be provided by the carrier.
1.953.4866-V5 08/17 Printed in Germany Changes without prior notification reserved
Important: keep original operating manual for future use

Cryo-Compact Circulator
3
TABLE OF CONTENTS
Operating manual ..................................................................................................... 4
1. Intended use....................................................................................................... 4
1.1. Description ..................................................................................................... 4
2. Operator responsibility – Safety instructions ...................................................... 4
2.1. Disposal ......................................................................................................... 6
3. Technical specifications...................................................................................... 7
4. Safety notes for the user .................................................................................. 10
4.1. Explanation of safety notes .......................................................................... 10
4.2. Explanation of other notes............................................................................ 10
4.3. Safety instructions ........................................................................................ 10
Operating instructions............................................................................................. 13
5. Operating controls and functional elements ..................................................... 13
6. Preparations ..................................................................................................... 15
6.1. Installation .................................................................................................... 15
6.2. Temperature application to external, closed systems................................... 16
6.3. Tubing .......................................................................................................... 17
6.4. Bath fluids .................................................................................................... 18
7. Operating procedures....................................................................................... 19
7.1. Power connection......................................................................................... 19
7.2. Filling............................................................................................................ 19
7.3. Switching on / Start - Stop............................................................................ 21
7.4. Control of the cooling machine ................................................................ 21
7.5. Setting the temperatures .............................................................................. 22
7.6. AUTOSTART ON / OFF ............................................................................... 22
7.7. Remote control: activate – deactivate .......................................................... 23
8. Safety installations............................................................................................ 24
8.1. Excess temperature protection.................................................................... 24
8.2. Low level protection...................................................................................... 24
9. Troubleshooting guide / Error messages.......................................................... 25
10. Electrical connections....................................................................................... 27
11. Remote control ................................................................................................. 28
11.1.Setup for remote control............................................................................... 28
11.2.Communication with a PC or a superordinated data system........................ 28
11.3.List of commands ......................................................................................... 29
11.4.Status messages.......................................................................................... 30
11.5.Error messages............................................................................................ 30
12. JULABO Service – Online remote diagnosis .................................................... 32
13. Draining ............................................................................................................ 33
14. Cleaning / repairing the unit.............................................................................. 33
15. WARRANTY PROVISIONS.............................................................................. 35

Operating manual
4
Operating manual
1. Intended use
JULABO Cryo-Compact Circulators have been designed for temperature application to
specific fluids in a bath tank. The units feature pump connections for temperature control of
external systems (loop circuit).
JULABO circulators are not suitable for direct temperature control of foods,
semi-luxury foods and tobacco, or pharmaceutical and medical products. Direct
temperature control means unprotected contact of the object with the bath
medium (bath fluid).
1.1. Description
PID1
RS232
The Cryo-Compact Circulators are operated via the splash-proof keypad.
The implemented microprocessor technology allows to set and to store the
setpoint that can be indicated on the LED temperature display.
The PID temperature control adapts the heat supplied to the thermal
requirements of the bath.
Safety installations conforming to IEC 61010-2-010
The excess temperature protection is a safety installation independent from
the control circuit.
The safety value is set using a tool (screwdriver).
If the low level protection device is triggered, a complete shutdown of the
heater and circulating pump is effected.
The serial interface RS232 allows modern process technology without
additional interface.
2. Operator responsibility – Safety instructions
The products of JULABO ensure safe operation when installed, operated, and maintained
according to common safety regulations. This section explains the potential dangers that may
arise when operating the circulator and also specifies the most important safety precautions to
preclude these dangers as far as possible.
The operator is responsible for the qualification of the personnel operating the units.
The personnel operating the units should be regularly instructed about the dangers
involved with their job activities as well as measures to avert these dangers.
Make sure all persons tasked with operating, installing, and maintaining the unit have read
and understand the safety information and operating instructions.
When using hazardous materials or materials that could become hazardous, the circulator
may be operated only by persons who are absolutely familiar with these materials and the
circulator. These persons must be fully aware of possible risks.

Cryo-Compact Circulator
5
If you have any questions concerning the operation of your unit or the information in this
manual, please contact us!
Contact JULABO USA, Inc.
884 Marcon Boulevard
Allentown, PA 18109
Phone: [phone]
Fax: [phone]
info.us@ julabo.com
www.julabo.com
Safety instructions for the operator:
Avoid strikes to the housing, vibrations, damage to the operating-element panel (keypad,
display), and contamination.
Make sure the product is checked for proper condition regularly (depending on the
conditions of use). Regularly check (at least every 2 years) the proper condition of the
mandatory, warning, prohibition and safety labels.
Make sure that the mains power supply has low impedance to avoid any negative effects
on the instruments being operated on the same mains.
This unit is designed for operation in a controlled electromagnetic environment. This
means that transmitting devices (e.g., cellular phones) should not be used in the
immediate vicinity.
Magnetic radiation may affect other devices with components sensitive to magnetic fields
(e.g., monitors). We recommend maintaining a minimum distance of 1 m.
Permissible ambient temperature: max. 40 °C, min. 5 °C.
Permissible relative humidity: 50% (40 °C).
Do not store the unit in an aggressive atmosphere. Protect the unit from contamination.
Do not expose the unit to sunlight.
Appropriate operation
Only qualified personnel is authorized to configure, install, maintain, or repair the circulator.
Persons who operate the circulator must be trained in the particular tasks by qualified
personnel. The summarized user guidance (short manual) and the specification table with
information on individual parameters are sufficient for this.
Use
The bath can be filled with flammable materials. Fire hazard!
There might be chemical dangers depending on the bath medium used.
Observe all warnings for the used materials (bath fluids) and the respective instructions (safety
data sheets).
Insufficient ventilation may result in the formation of explosive mixtures. Only use the unit in
well ventilated areas.
Only use recommended materials (bath fluids). Only use non-acid and non corroding
materials.

Operator responsibility – Safety instructions
6
When using hazardous materials or materials that could become hazardous, the operator
must affix the enclosed safety labels to the front of the unit so they are highly visible:
If this unit is intended for use within the United States of America, all 3 warning labels must be
affixed to the housing of the unit prior to use. Directions for the positioning of the individual
warning labels are enclosed with the warning labels included in the delivery.Warning labels
must be easily visible to users.
1 Warning label W00: Colors: yellow, black
Danger area. Attention! Observe instructions.
(operating manual, safety data sheet)
2
or
Mandatory label M018: Colors: blue, white
Carefully read the user information prior to beginning operation.
Scope: EU
2
Semi S1-0701 Table A1-2 #9
Carefully read the user information prior to beginning operation.
Scope: USA, NAFTA
3
Warning label Proposition 65
Particular care and attention is necessary because of the wide operating range.
There are thermal dangers: Burn, scald, hot steam, hot parts and surfaces that can be
touched.
Warning label W26:Colors: yellow, black
Hot surface warning.
(The label is put on by JULABO)
Warning label W017: Colors: yellow, black
Low temperature warning.
(The label is put on by JULABO)
Observe the instructions in the manuals for instruments of a different make that you connect to
the circulator, particularly the corresponding safety instructions. Also observe the pin
assignment of plugs and technical specifications of the products.
2.1. Disposal
The product may be used with oil as bath fluid. These oils fully or partially consist of mineral oil
or synthetic oil. For disposal, follow the instructions in the material safety data sheets.
This unit contains the refrigerants R-404A, and R-134a, which at this time are not considered
harmful to the ozone layer. However, over the long operating period of the unit, disposal rules
may change. Therefore, only qualified personnel should handle the disposal.

Cryo-Compact Circulator
7
3. Technical specifications
CF30
Working temperature range
°C
-30 ... +150
Temperature stability
°C
±0.03
Temperature selection
digital
via keypad
indication on LED-DISPLAY
remote control via personal computer
indication on monitor
Temperature indication:
LED-DISPLAY
Resolution
°C
0.1
Temperature control
PID 1
Working temperature sensor
Pt 100
Safety temperature sensor
Pt 100
Heater wattage (at 230 V)
kW
2.0
Heater wattage (at 115 V)
kW
1.0
Cooling capacity
Medium ethanol
°C
kW
20 0 -20
0.32 0.25 0.15
Cooling compressor
1-stage
Refrigerant
R134a
Cooling machine
Air-cooled
Electrical connections:
Computer interface
RS232
Pump capacity:
Flow rate max. at 0 bar
l/min
15
Pressure max. at 0 liter
bar
0,35
Bath opening (WxL)
cm
16x3
Bath depth
cm
14
Filling volume
liters
2.0 ... 3.0
Overall dimensions (WxDxH)
cm
24x46x40
Weight
kg
35
Ambient temperature
°C
5 ... 40
Protection class according to IEC 60 529
IP 21
Mains power connection 230 V/50 Hz
V/ Hz
207-253 / 50
Current draw (at 230 V)
A
10
Mains power connection 230 V/60 Hz
V/ Hz
207-253 / 60
Current draw (at 230 V)
A
11
Mains power connection 115 V/60 Hz
V/ Hz
103-127 / 60
Current draw (at 115 V)
A
13
All measurements have been carried out at: rated voltage and frequency
ambient temperature: 20 °C Technical changes without prior notification reserved.

Technical specifications
8
CF40
Working temperature range
°C
-40 ... +150
Temperature stability
°C
±0.03
Temperature selection
digital
via keypad
indication on LED-DISPLAY
remote control via personal computer
indication on monitor
Temperature indication:
LED-DISPLAY
Resolution
°C
0.1
Temperature control
PID 1
Working temperature sensor
Pt 100
Safety temperature sensor
Pt 100
Heater wattage (at 230 V)
kW
2.0
Heater wattage (at 115 V)
kW
1.0
Cooling capacity
Medium ethanol
°C
kW
20 0 -20 -30
0.47 0.4 0.28 0.12
Cooling compressor
1-stage
Refrigerant
R404A
Cooling machine
Air-cooled
Electrical connections:
Computer interface
RS232
Pump capacity:
Flow rate max. at 0 bar
l/min
15
Pressure max. at 0 liter
bar
0,35
Bath opening (WxL)
cm
19x3
Bath depth
cm
19
Filling volume
liters
4.0 ... 5.5
Overall dimensions (WxDxH)
cm
28x46x46
Weight
kg
41
Ambient temperature
°C
5 ... 40
Protection class according to IEC 60 529
IP 21
Mains power connection 230 V/50 Hz
V/ Hz
207-253 / 50
Current draw (at 230 V)
A
12
Mains power connection 230 V/60 Hz
V/ Hz
207-253 / 60
Current draw (at 230 V)
A
12
Mains power connection 115 V/60 Hz
V/ Hz
103-127 / 60
Current draw (at 115 V)
A
16
All measurements have been carried out at: rated voltage and frequency
ambient temperature: 20 °C Technical changes without prior notification reserved.

Cryo-Compact Circulator
9
Warning functions and safety installations
Excess temperature protection adjustable from 0 °C ... 220 °C
Low liquid level protection float switch
Classification according to DIN 12876-1 class III
Alarm message optical + audible (permanent)
Warning message optical + audible (in intervals)
Overload protection for compressor and pump motor
Supervision of working sensor plausibility control
Reciprocal sensor monitoring between
working and safety sensors difference >35 K
Environmental conditions according to IEC 61 010-1:
Use indoors only.
Altitude up to 2000 m - normal zero.
Ambient temperature: see Technical specifications
Humidity:
Max. relative humidity 80% for temperatures up to +31 °C,
linear decrease down to 50% relative humidity at a temperature of +40 °C
Max. mains voltage fluctuations of ±10% are permissible.
Protection class according to IEC 60 529 IP21
The unit corresponds to Class I
Overvoltage category II
Pollution degree 2
Caution:
The unit is not for use in explosive environment.
EMC requirements according to EN 61326-1
This unit is an ISM device classified in Group 1 (using high frequency for internal purposes),
Class A (industrial and commercial range).

Safety notes for the user
10
4. Safety notes for the user
4.1. Explanation of safety notes
In addition to the safety warnings listed above, warnings are posted throughout
the manual. These warnings are designated by an exclamation mark inside an
equilateral triangle. “Warning of a dangerous situation (Attention! Please follow
the documentation).”
The danger is classified using a signal word.
Read and follow these important instructions.
Warning:
Describes a possibly highly dangerous situation. If these instructions are not
followed, serious injury and danger to life could result.
Caution:
Describes a possibly dangerous situation. If this is not avoided, slight or minor
injuries could result. A warning of possible property damage may also be
contained in the text.
Notice:
Describes a possibly harmful situation. If this is not avoided, the product or
anything in its surroundings can be damaged.
4.2. Explanation of other notes
Note!
Draws attention to something special.
Important!
Indicates usage tips and other useful information.
4.3. Safety instructions
Follow the safety instructions to avoid personal injury and property damage. Also,
the valid safety instructions for workplaces must be followed.
•Only connect the unit to a power socket with an earthing contact (PE – protective
earth)!
•The power supply plug serves as a safe disconnecting device from the line and
must always be easily accessible.
•Place the unit on an even surface on a base made of nonflammable material.
•Do not stay in the area below the unit.
•Make sure you read and understand all instructions and safety precautions listed
in this manual before installing or operating your unit.
•Set the excess temperature safety installation at least 25 °C below the fire
point of the bath fluid.

Cryo-Compact Circulator
11
•Never operate the unit without bath fluid in the bath.
•Pay attention to the thermal expansion of bath oil during heating to avoid
overflowing of the fluid.
•Prevent water from entering the hot bath oil.
•Do not drain the bath fluid while it is hot!
Check the temperature of the bath fluid prior to draining (e.g., by switching the
unit on for a short moment).
•Use suitable connecting tubing.
•Avoid sharp bends in the tubing, and maintain a sufficient distance from
surrounding walls.
•Make sure that the tubing is securely attached.
•Regularly check the tubing for material defects (e.g., for cracks).
•Never operate damaged or leaking units.
•Always turn off the unit and disconnect the mains cable from the power source
before performing any service or maintenance procedures, or before moving the
unit.
•Always turn off the unit and disconnect the mains cable from the power source
before cleaning the unit.
•Always empty the bath before moving the unit.
•Transport the unit with care.
•Sudden jolts or drops may cause damage in the interior of the unit.
•Observe all warning labels.
•Never remove warning labels.
•Never operate units with damaged mains power cables.
•Repairs are to be carried out only by qualified service personnel.
•Some parts of the bath tank and the pump connections may become
extremely hot during continuous operation. Therefore, exercise particular
caution when touching these parts.
•Some parts of the bath tank and the pump connections may become
extremely cold during continuous operation. Therefore, exercise particular
caution when touching these parts.
Caution:
The circulator may be used, for example, to control the temperature of fluids in
a reactor.
We do not know what substances are contained in these vessels.
Many substances are:
•inflammable, easily ignited, or explosive
•hazardous to health
•environmentally hazardous
i.e.: dangerous
The user alone is responsible for the handling of these substances!

Safety notes for the user
12
The following questions should help to recognize possible dangers and to
reduce the risks to a minimum.
•Are all tubes and electrical cables connected and layed?
Note:
sharp edges, hot surfaces in operation, moving machine parts, etc.
•Do dangerous vapors or gases develop during heating?
Must the work be done in a fume hood?
•What to do when a dangerous substance was spilled on or in the unit?
Before starting to work, obtain information concerning the substance and
determine the method of decontamination.
Notice:
Check the safety installations at least twice a year!
•Excess temperature protection according to IEC 61010-2-010
With a screwdriver, turn back the adjustable excess temperature protection
until the shutdown point (actual temperature).
•Low level protection according to IEC 61010-2-010
To check the function of the float, it can be manually lowered with a
screwdriver, for example.
WARNING
This product contains chemicals known to the state of California to cause
cancer, birth defects or other reproductive harm.

Cryo-Compact Circulator
13
Operating instructions
5. Operating controls and functional elements
Front view CF40 / CF30 Rear view CF40/ CF30
7
6b
SERIAL
T16A
T16A
8
9
10
11
SERIAL
T16A
T16A
7
6b
9
10
11
8

Operating controls and functional elements
14
1
Mains power switch, illuminated
2
°C
140
100
180
220
0
60
20
Adjustable excess temperature protection according to
IEC 61010-2-010
3.0
Indication
3.1
LED temperature display
3.2
Control indicator –Heating
3.3
Control indicator – Cooling
3.4
Control indicator – Alarm
4.0
Keypad
splash-water protected
Edit keys (set point increase or decrease)
Enter key Store set point value / parameter
Escape key 1. Cancel entries
2. Switch over LED temperature display
5
Drain port
6a
6b
Handle: front
Handle: rear
7
SERIAL
Interface RS232: remote control via personal computer
8
Pump connector M16x1: - Feed
9
Pump connector M16x1: – Return
10
Mains fuses: T16A
T20A (CF40 115 V / 60 Hz)
11
Mains power cable with plug

Cryo-Compact Circulator
15
6. Preparations
6.1. Installation
•Place the unit on an even surface on a base made of
nonflammable material.
•Cooling machine, pump motor and electronics produce
intrinsic heat that is dissipated via the venting openings.!
Never cover these openings!
•Be sure that the flow of ventilation can exit under the
instrument.
•Keep at least 20 cm of open space on the side and rear of
the unit.
•The place of installation should be large enough and
provide sufficient air ventilation to ensure the room does
not warm up excessively because of the heat the
instrument rejects to the environment. (Max. permissible
ambient temperature: 35 °C).
For a fault (leakage) in the refrigeration system, the
standard EN 378 prescribes a certain room space to be
available for each kg of refrigerant.
The refrigerant quantity is specified on the type plate.
> For 0.52 kg of refrigerant R404A, 1 m3 of space is
required.
> For 0.25 kg of refrigerant R134a, 1 m3 of space is
required.
Model CF40 with 0.16 kg filling quantity of refrigerant
R404A = 0,33 m3volume
Model CF30 with 0.15 kg filling quantity of refrigerant
R134a = 0.6 m3volume
•Do not install the unit in the immediate vicinity of heat sources and do not
expose it to sunlight.
•Before operating the unit after transport, wait about one hour after
installation. This will allow any oil that has accumulated laterally during
transport to flow back down, thus ensuring that the compressor can
develop its maximum capacity.

Preparations
16
6.2. Temperature application to external, closed systems
The Cryo-Compact Circulator is used for temperature application to external,
closed systems (loop circuit)
Caution: Securely attach all tubing to prevent slipping.
Notice: Flood hazard!
If the liquid levels in the Cryo-
Compact Circulator bath and the external system
are at different heights, overflowing must be prevented after the power has
been turned off.
•Unscrew the M16x1 collar nuts on the
pump connectors with a 19 mm (3/4“)
wrench and remove the sealing disks.
Using the collar nuts, screw on the tubing
connection fittings (for tubing 8 mm or 12
mm in diameter) delivered with the unit and
tighten firmly. (Pressure pump: 8, Return:
9)
•Push on the tubings, and secure with tube
clamps.
•Attach the tubing to the connectors of the
external closed system, e.g., an instrument
with a pressure-resistant temperature
jacket or a temperature coil, and fasten
with tube clamps to prevent slipping.
Tubing see page 17
Return flow safety device
For this reason, shut-off valves can be integrated in the loop circuit.
Order No. Description
8 970 456 Shut-off valve (suitable up to +90 °C)
8 970 457 Shut-off valve (suitable up to +200 °C)

Cryo-Compact Circulator
17
6.3. Tubing
Warning: Tubing:
At high working temperatures, the tubing used for temperature control and for
the cooling water supply represents a danger source.
A damaged tubing line may allow a large amount of hot bath fluid to be
pumped out within a short time.
This may result in:
•Burning of skin
•Breathing difficulties due to hot atmosphere
Safety instructions
•Use suitable connecting tubing.
•Make sure that the tubing is securely attached.
•Avoid sharp bends in the tubing and maintain a sufficient distance from
surrounding walls.
•Regularly check the tubing for material defects (e.g., for cracks), at least
once a year.
•Preventive maintenance: replace the tubing from time to time.
Recommended tubing:
Order No.
Suitable for
8930008
1 m CR
®
-tubing 8 mm inner dia. (-20 ... +120°C)
CF30, CF40
8930012
1 m CR
®
-tubing 12 mm inner dia. (-20 ... +120°C)
CF30, CF40
8930108
1 m Viton
®
tubing 8 mm inner dia (-50 °C ... 200 °C)
CF30, CF40
8930112
1 m Viton®tubing 12 mm inner dia (-50 °C ... 200 °C)
CF30, CF40
Tubing insulation
8930410
1 m Insulation, 14 mm inner dia..
CR
®
-tubing 8 mm inner dia
8930412
1 m Insulation, 18 mm inner dia.
Viton®tubing 12 mm inner dia.
Tube clamps
8970480
2 Tube clamps, size 1
CR®-tubing 8 mm inner dia
8970481
2 Tube clamps, size 2
Viton®tubing 12 mm inner dia.
Metal tubing, flexible, triple insulated
8 930 209 0.5 m
8 930 210 1.0 m
8 930 211 1.5 m
8 930 214 3.0 m
2 fittings M16x1 female
-100 °C ... +350 °C
Metal tubing, flexible, insulated
8 930 220 0.5 m
8 930 221 1.0 m
8 930 222 1.5 m
8 930 223 3.0 m
2 fittings M16x1 female
-50 °C to +200 °C

18
6.4. Bath fluids
Caution:
Carefully read the material safety data sheet of the bath fluid used,
particularly with regard to the fire point!
If a bath fluid with a fire point of ≤65 °C is used, only supervised operation is
possible.
Water:
The quality of water depends on local conditions.
•Due to the high concentration of lime, hard water is not suitable for
temperature control because it leads to scale in the bath
•Ferrous water can cause corrosion, even on stainless steel.
•Chlorinated water can cause pitting corrosion.
•Distilled water and deionized water are unsuitable. Their special
properties cause corrosion in the bath, even on stainless steel.
Recommended bath fluids:
Bath fluid
Temperature range
soft/decalcified water
5 °C to 80 °C
See website for list of recommended bath fluids.
Contact:see page 5
Caution:
Fire or other dangers when using bath fluids that are not recommended:
Please contact JULABO before using other than recommended bath liquids.
JULABO assumes no liability for damage caused by the selection of an
unsuitable bath fluid.
Unsuitable bath fluids are fluids which, e.g.,
•are highly viscous
(much higher than 30 mm2/s at the respective working temperature)
•have a low viscosity and have creep characteristics
•have corrosive characteristics or
•tend to crack.
No liability for use of other bath fluids!
ATTENTION: The maximum permissible viscosity is 30 mm2/s

Cryo-Compact Circulator
19
7. Operating procedures
7.1. Power connection
Caution:
•Only connect the unit to a power socket with an earthing contact (PE –
protective earth)!
•The power supply plug serves as a safe disconnecting device from the line
and must always be easily accessible.
•Never operate the unit with a damaged mains power cable.
•Regularly check the mains power cables for damage.
•We disclaim all liability for damage caused by incorrect line voltages!
Make sure that the line voltage and frequency match the supply
voltage specified on the type plate.
7.2. Filling
Notice:
Pay attention to the thermal expansion of bath oil during heating to avoid
overflowing of the liquid.
Guideline:
A volume change of 12 % per 100 °C temperature variation is to be
considered.
Take care that no liquid enters the interior of the Cryo-
compact circulator.

Connect the tubing from the external system to the pump
connectors and check for leaks.
Check to make sure that the drain tap (7) is closed.
Recommendation:
For filling, use for example an measuring jug with nuzzle.

Operating procedures
20

Recommended maximum filling level with water as bath fluid:
30 mm below the tank rim
Recommended maximum filling level with bath oils:
40 mm below the tank rim
•Turn the mains switch (1) on
(Switching on - see page 21)
•Switch on unit. To do so press button for approx. 4 seconds.
•Tempering fluid is pumped into the externally connected system.
Refill fluid.
•The Cryo-Compact Circulator is ready for operation.
Important:
When using a bath fluid, the change in volume in case of change in
temperature has to be respected. Fill in a little amount of bath fluid
only so that the low level alarm is not triggered.
Low level alarm is triggered at the following liquid level:
CF30 75 to 80 mm below the tank rim
CF40 80 to 85 mm below the tank rim
When reaching the working temperature, check the liquid level. If
the cooling coil is not completely covered with bath fluid, refill it.