Julabo F250 User manual

Operating Manual
Recirculating Cooler
F250 F500
Original Operating Manual
1.951.4806-V0 05/14 Proj. 1789
JULABO GmbH
77960 Seelbach / Germany
Tel. [phone] / 51-0
Fax [phone] / 24 91
[e-mail]
www.julabo.de

2 1.951.4806-V0
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 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
and ISO 14001.Certificate Registration No. 01 100044846
For F250 device
This product has been tested to the requirements of CAN/CSA-C22.2
No. 61010-1, second edition, including Amendment 1, or a later
version of the same standard incorporating the same level of testing
requirements.
Unpacking and inspecting
Unpack the 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.
Printed in Germany Changes without prior notification reserved
Important: keep operating manual for future use

F250, F500
1.951.4806-V0 3
CONTENT
1. Intended use ................................................................................................................4
2. Operator responsibility – Safety recommendations .......................................................4
3. Handling.........................................................................................................................5
3.1. Appropriate operation ............................................................................................5
3.2. Use ........................................................................................................................5
3.3. Disposal ................................................................................................................6
4. Technical specifications .................................................................................................7
4.1. F250 ......................................................................................................................7
4.2. F500 ......................................................................................................................8
4.3. Warning functions and safety installations ............................................................9
4.4. Materials of Construction of the wetted Parts ......................................................10
5. Safety Notes ...........................................................................................................11
5.1. Description of the safety notes ............................................................................11
5.2. Explanation of other notes ...................................................................................11
5.3. Safety instructions ...............................................................................................12
6. Moving up and connect ................................................................................................13
6.1. Transportation and site conditions .......................................................................13
6.2. Tubing .................................................................................................................14
7. Operating controls and functional elements .................................................................16
7.1. F250 ....................................................................................................................16
7.2. F500 ....................................................................................................................18
8. Operating procedures ..................................................................................................20
8.1. Bath fluids............................................................................................................20
8.2. Power connection ................................................................................................21
8.3. Filling ...................................................................................................................21
8.4. Switching on / Start - Stop ...................................................................................22
8.5. Setting the temperatures .....................................................................................22
8.6. Timer function......................................................................................................23
8.6.1. Setting the time ................................................................................................ 23
8.6.2. Timer operation ................................................................................................ 23
8.7. AUTOSTART ON / OFF ......................................................................................24
9. Safety installations .......................................................................................................25
9.1. Excess temperature protection ............................................................................25
9.2. Low level protection .............................................................................................25
10. Troubleshooting guide / Error messages .....................................................................26
11. Cleaning / repairing the unit .........................................................................................28
11.1. Draining ...............................................................................................................29
12. Warranty conditions .....................................................................................................30
12.1. EC-Declaration of Conformity ..............................................................................31

Intended use
4 1.951.4806-V0
1. Intended use
JULABO recirculating coolers have been designed for temperature application to specific
fluids.
The pump connections can be used for cooling applications in an external circuit at a constant
temperature.
PID1
 The recirculating coolers 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 regulation is used to withdraw heat from the
bath fluid by means of the cooling machine and to automatically
regulate the required need.
NOTICE
Health hazards caused by the bath fluid.
JULABO recirculating coolers are not conceived for direct temperature
application to food and luxury articles or pharmaceutical and medico-
technical products.
Direct temperature application means: Unprotected contact of the object with the bath
medium (bath fluid).
2. Operator responsibility – Safety recommendations
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.
 Make sure that the persons who operate the chillers, are trained in this work.
 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.

F250, F500
1.951.4806-V0 5
If you have any questions concerning the operation of your unit or the information in this
manual, please contact us!
Contact: JULABO GmbH
Eisenbahnstraße 45
77960 Seelbach / Germany
 [phone]  [e-mail]
 [phone]  www.julabo.de
3. Handling
 You have received a product designed for industrial use. Nevertheless, 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 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.
3.1. Appropriate operation
Only qualified personnel is authorized to perform configuration, installation, maintenance and
repairs of the circulator.
Routine operation can also be carried out by untrained personnel who should however be
instructed by trained personnel.
3.2. Use
DANGER
Fire hazard!
The unit is not for use in explosive atmosphere.
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).

Handling
6 1.951.4806-V0
Insufficient ventilation may result in the formation of explosive mixtures. Only use the unit in
well ventilated areas. The unit is not for use in explosive atmosphere.
Only use recommended materials (bath fluids). Only use non-acid and non corroding
materials.
When using hazardous materials or materials that could become hazardous, the operator
must affix the enclosed safety labels (1 + 2) to the front of the unit so they are highly visible:
1
Danger area. Attention! Observe instructions.
(operating manual, safety data sheet)
2a
or
Carefully read the user information prior to beginning operation.
Scope: EU
2b
Carefully read the user information prior to beginning operation.
Scope: USA, NAFTA
3.3. Disposal
This unit contains the refrigerants R134a – at this time considered not to have any negative
effects on the ozone layer. However, during the long operating period of the unit, disposal
prescriptions may change. So only qualified personnel should take care of disposal.
Valid in EU countries
See the current official journal of the European Union – WEEE directive.
Directive of the European Parliament and of the Council on waste electrical
and electronic equipment (WEEE).
This directive requires electrical and electronic equipment marked with a
crossed-out trash can to be disposed of separately in an environmentally
friendly manner.
Contact an authorized waste management company in your country.
Disposal with household waste (unsorted waste) or similar collections of
municipal waste is not permitted!

F250, F500
1.951.4806-V0 7
4. Technical specifications
4.1. F250
Recirculating Cooler
F250
Working temperature range
°C
-10 ... +40
Temperature stability
°C
±0.5
Temperature selection:
digital
via key pad
indication on LED-DISPLAY
Temperature indication:
LED-DISPLAY
Adjustment and display resolution
°C
0.1
Temperature control
PID 1
Temperature sensor
Pt 100
Excess temperature protection
85 °C - fixed value
Low liquid level protection
float switch
Circulating pump:
discharge, max.at 0 bar
l/min
15
pressure, max. at 0 Liters
bar
0.35
Filling level indicator
sight glass
Filling volume from ... to
Liters
1.7 ... 2.6
Dimensions (WxLxH)
cm
24x40x52
Weight
kg
27.0
Ambient temperature range
°C
5 ... 40
Return flow temperature max.
°C
80
Cooling compressor
1- stage / air cooled
Refrigerant
R134a
Cooling capacity
at 100 V / 60 Hz at 115 V / 60 Hz 
at 200 V / 60 Hz at 230 V / 60 Hz 
at 230 V / 50 Hz 
at 100 V / 50 Hz at 200 V / 50 Hz
Medium: Mixture water-glycol
°C
W
°C
W
+20 +15 +10 +5 0 -5 -10
250 240 220 210 180 90 60
+20 +15 +10 +5 0 -5 -10
220 210 195 185 170 80 40
Mains power connection
V/ Hz
230
±
10 % / 50
Current draw (at 230 V)
A
3.0
Mains power connection
V/ Hz
230
±
10 % / 60
Current draw (at 230 V)
A
2.0
Mains power connection
V/ Hz
200 -5 %; +21 % / 50-60
Current draw (at 200 V / 50 Hz)
(at 200 V / 60 Hz)
A
A
2.0
2.1
Mains power connection
V/ Hz
115
±
10 % / 60
Current draw (at 115 V)
A
4.0
Mains power connection
V/ Hz
100
±
10 % / 50-60
Current draw (at 100 V / 50 Hz)
(at 100 V / 60 Hz)
A
A
5.0
4.7
All measurements have been carried out at: rated voltage and frequency
ambient temperature: 20 °C. Technical changes without prior notification reserved.

Technical specifications
8 1.951.4806-V0
4.2. F500
Recirculating Cooler
F500
Working temperature range
°C
0 ... +40
Temperature stability
°C
±0.5
Temperature selection:
digital
via key pad
indication on LED-DISPLAY
Temperature indication:
LED-DISPLAY
Adjustment and display resolution
°C
0.1
Temperature control
PID 1
Temperature sensor
Pt 100
Excess temperature protection
85 °C - fixed value
Low liquid level protection
float switch
Circulating pump:
discharge, max.at 0 bar
l/min
24
pressure, max. at 0 Liters
bar
0.5
Filling level indicator
sight glass
Filling volume from ... to
Liters
5,0 ... 7,5
Dimensions (WxLxH)
cm
37,5x44x59
Weight
kg
34.0
Ambient temperature range
°C
5 ... 40
Return flow temperature max.
°C
80
Cooling compressor
1- stage / air cooled
Refrigerant
R134a
Cooling capacity
at 230 V / 50 Hz
Medium: Mixture water-glycol
°C
W
+20 +10 +5 0
500 400 300 250
Mains power connection
V/ Hz
230 -10 %; +7 % / 50
Current draw (at 230 V)
A
2.6
Mains power connection
V/ Hz
230
±
10 % / 60
Current draw (at 230 V)
A
2.5
Mains power connection
V/ Hz
115
±
10 % / 60
Current draw (at 115 V)
A
5.8
Mains power connection
V/ Hz
100 -5 %; +10 % / 50-60
Current draw (at 100 V / 50 Hz)
(at 100 V / 60 Hz)
A
A
5.9
5.5
All measurements have been carried out at: rated voltage and frequency
ambient temperature: 20 °C
Technical changes without prior notification reserved.

F250, F500
1.951.4806-V0 9
4.3. Warning functions and safety installations
Excess temperature protection 85 °C - fixed value
Low liquid level protection float switch
Alarm messages optical + audible (permanent)
Overload protection for compressor and pump motor
Klasseneinteilung nach DIN 12876-1 Class I
Environmental conditions according to IEC 61 010-1:
- Use only indoor.
- Altitude up to 2000 m - normal zero.
- Ambient temperature: +5 ... +40 °C
- Air humidity:
- Max. rel. humidity 80 % for temperatures up to +31 °C,
- linear decrease down to 50 % relative humidity at a temperature of +40 °C,
- max. permissible mains fluctuations, see Technical specifications.
The unit corresponds to Class I
Overvoltage category II
Pollution degree 2
WARNING
Fire hazard!
The unit is not for use in explosive atmosphere.
Standards for interference resistance 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).

Technical specifications
10 1.951.4806-V0
4.4. Materials of Construction of the wetted Parts
F250
Designation Material
PVC-tube inner diameter 8.0 x 2.0 mm PVC
Sealings processed PA
Bath, complete 1.4404, 1.4301, 1.4435
Sealing screw a.f. 13.0 x 11.0 1.4571
Profile sealing Silicone, white
Filling pipe, above PVC
Stopper POM
O-Ring CR11-70 (Chloroprene rubber)
Motor mounting sheet
Motor plate 1.4301
Pump 1.4301, 1.4401, PPS (Rytone)
Sensors 2xPt 100 1.4571
Float switch 1.4301, PP
Barbed fittings
CuZn39Pb3 (nickel plated)
F500
Designation
Material
PVC tube PVC
Sealings processed PA
Bath, complete 1.4301, 1.4404
Sealing screw a.f. 13.0 x 11.0 1.4571
Profile sealing Silicone, white
Filling pipe, above PVC,grey
Stopper POM
O-Ring CR11-70 (Chloroprene rubber)
Motor mounting sheet
Motor plate
1.4301/304H,1.4305/303
Pump 1.4301/304H, EPDM
Sensors 2xPt 100 1.4571
Float switch 1.4301/304, PP
Barbed fittings 1.4305/303

F250, F500
1.951.4806-V0 11
5. Safety Notes
5.1. Description of the safety notes
In addition to the safety warnings listed, 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.
DANGER
indicates a hazardous situation which, if not avoided, will result in
death or serious injury.
WARNING
indicates a hazardous situation which, if not avoided, could result
in death or serious injury.
CAUTION
indicates a hazardous situation which, if not avoided, may result in
minor or moderate injury.
NOTICE
indicates a property damage message.
5.2. Explanation of other notes
Note!
Draws attention to something special.
Important!
Indicates usage tips and other useful information.

Safety Notes
12 1.951.4806-V0
5.3. Safety instructions
Follow the safety recommendations to prevent damage to
persons or property. Further, the valid safety instructions for
working places must be followed.
• Only connect the unit to a power socket with 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 instrument on an even surface on a pad made of
non-inflammable 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.
• Never operate the unit without bath fluid in the bath.
• Do not drain the bath fluid while it is hot or cold!
Check the temperature of the bath fluid prior to draining (by
switching the unit on for a short moment for example).
• 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).
• Never operate damaged or leaking equipment.
• 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 drops may cause damage in the interior of the unit.
• Observe all warning labels.
• Never remove warning labels.
• Never operate equipment with damaged mains power cables.
• Repairs are to be carried out only by qualified service
personnel.
WARNING
Danger of electric shock! Short Circuit with fire hazard!
The overflow at the rear of the unit is not to be sealed!
If the overflow is sealed, the unit may be damaged by due to
overfilling as the liquid will run into the inside of the unit.
Fire hazard when using water/glycol mixture

F250, F500
1.951.4806-V0 13
6. Moving up and connect
CAUTION
Risk of injury for hands. Close cover carefully.
Carry the unit with 2 persons.
Wear safety shoes.
6.1. Transportation and site conditions
F250
Caster platform
(Order No.: 8910045
F500
Transport
• Lifting and Transport:
At F250: Lift the unit with two persons taking hold of its
bottom plate. For transport set the unit on a
suitable caster platform
(Order No.: 8910045).
At F500: The unit is lifted by two people by the hand
grips (front and back). For transport by one
person, the device can be lifted and moved
forward on the rear casters.
• 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!
• The air vents of the unit must not be covered.
• Keep at least 20 cm of open space at the front and
rear venting grid.
• Do not install the unit in the immediate vicinity of
heat sources and do not expose it to sunlight.
• Ensure good ventilation of the site.
• 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: 40 °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 0.25 kg of refrigerant R134a, 1 m3 of space is
required.

Moving up and connect
14 1.951.4806-V0
6.2. Tubing
CAUTION
Damage caused by leaking bath fluid!
• Employ 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).
• Preventive maintenance: Replace the tubing from time to time.
• Do not seal the overflow !
•
In case the system to be cooled is located at a higher level than
the recirculating cooler, take note of bath liquid flowing back
when the unit is switched off.
The units have the following dimensions to connect the tubing:
F250
F500
Feed ( ) M10x1 male or barbed fittings
∅
8/10 mm inner diameter.
M16x1 male or barbed fittings
∅
8/12 mm inner diameter.
Return ( ) M10x1 male or barbed fittings
∅
8/10 mm inner diameter.
M16x1 male or barbed fittings
∅
8/12 mm inner diameter.
Further accessories can be found at JULABO-Homepage www.julabo.com.

F250, F500
1.951.4806-V0 15
F250
• 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.
• Remove cap screws from the connections.
• Connect the tubing from the external system to the
pump connectors and check for leaks.
F500
• If required, connect a hose to the overflow and
drain into a suitable container, which must be
positioned deeper than the initial "overflow".
• Do not seal the overflow!

Operating controls and functional elements
16 1.951.4806-V0
7. Operating controls and functional elements
7.1. F250
1
Main switch, splash water proofed with integral MCB.
I = On
O = Off
2 Indication elements
2(1)
- LED Temperature display
2(2) - Control display “Cooling”
2(3) - Control display „Alarm“
3 Foil key pad, splash water proofed
3.1 - Modify keys for Setpoint – higher / lower
3.2 - Enter key for storage of Setpoint / Parameter
4 Level indication
5 Filling hole

F250, F500
1.951.4806-V0 17
6 Power cable with plug
7
Pump connection - outlet, M10x1 male or barbed fitting
∅ 8/10 mm inner diameter
8
Pump connection - return, M10x1 male or barbed fitting
∅ 8/10 mm inner diameter
9
Overflow for Bath, Dout 10 mm, dinner 8 mm
10
Drain screw, M10x1 male

Operating controls and functional elements
18 1.951.4806-V0
7.2. F500
1
Main switch, splash water proofed with integral MCB.
I = On
O = Off
2 Indication elements
2(1) - LED Temperature display
2(2) - Control display “Cooling”
2(3)
- Control display „Alarm“
3
Foil key pad, splash water proofed
3(1) - Modify keys for Setpoint – higher / lower
3(2)
- Enter key for storage of Setpoint / Parameter
4
Level indication
5 Filling hole
6
Hand grip

F250, F500
1.951.4806-V0 19
7 Power cable with plug
8
Pump connection - outlet, M16x1 male or barbed fitting
∅ 8/12 mm inner diameter.
9
Pump connection - return, M16x1 male or barbed fitting
∅ 8/12 mm inner diameter.
10
Overflow for Bath, Dout 10 mm, dinner 8 mm
11 Hand grip
12
Drain screw, M10x1 male

Operating procedures
20 1.951.4806-V0
8. Operating procedures
8.1. Bath fluids
CAUTION
No liability for use of other bath liquids!
Please contact JULABO before using other than recommended
bath fluids. JULABO takes no responsibility for damages
caused by the selection of an unsuitable bath fluid
Do not use alcohols.
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
calcification in the bath.
• Ferrous water can cause corrosion - even on stainless
steel.
• Chloric water can cause pitting corrosion.
• Distilled and deionized water is unsuitable. Their special
properties cause corrosion in the bath, even in stainless
steel.
• No liablity for use with water. Danger of freezing at working
temperatures <5 °C.
Mixture water -glycol:
Strictly observe the safety data and handling instructions from
the manufacturer.
The proportion of water might evaporate by and by. Check the
mixing ratio regularly and refill water if necessary.
Recommended bath fluids:
Bath fluid Temperature range
JULABO Thermal G -30 °C ... 80 °C
Water/Glycole (50:50) -30 °C ... 50 °C
soft/decalcified water +5 °C ... 80 °C
Order No.
Volume
8 940 124
8 940 125
JULABO Thermal G
JULABO Thermal G
10 Liter
5 Liter
See website for list of recommended bath fluids.
Contact: www.julabo.com
NOTICE
Use of non-recommended bath fluids may result in a fire
hazard or other hazard:
JULABO will assume no liability for damages resulting from use of
an unsuitable bath liquid.