JULABO FLW20006 User Manual

Operating manual

Recirculating Coolers

FL20006

English

FLW20006

JULABO GmbH
77960 Seelbach / Germany
Tel. [phone] / 51-0

1.951.4837-V2 10/13

19514837-V2.doc Print date: 09.10.2013

Fax [phone] / 24 91
[e-mail]
www.julabo.de

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

Unpacking and inspecting

Printed in Germany Changes without prior notification reserved

Unpack the recirculating cooler and accessories and check for damages incurred
during transit. These should be reported to the responsible carrier, railway, or postal
authority, and a request for a damage report should be made. 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.

Important: keep operating manual for future use

2

TABLE OF CONTENTS

1. Intended use ................................................................................................................................. 4

1.1. Description ........................................................................................................................ 4

2. Operator responsibility – Safety instructions ................................................................................ 4

2.1. Installation Log for FL20006 ............................................................................................. 6

2.2. Disposal ............................................................................................................................ 6

2.3. EC Conformity ................................................................................................................... 7

2.4. Technical specifications .................................................................................................... 8

2.5. Cooling water connection ................................................................................................ 10

3. Safety notes for the user ............................................................................................................ 11

3.1. Explanation of safety notes ............................................................................................. 11

3.2. Explanation of other notes .............................................................................................. 11

3.3. Safety instructions ........................................................................................................... 11

4. Installation .................................................................................................................................. 12

4.1. Tubing ............................................................................................................................. 14

5. Operating controls and functional elements ............................................................................... 15

6. Operating procedures ................................................................................................................. 17

6.1. Bath fluids ....................................................................................................................... 17

6.2. Power connection ........................................................................................................... 17

6.3. Filling ............................................................................................................................... 18

6.4. Switching on / Start - Stop .............................................................................................. 18

6.5. Setting the feed pressure ................................................................................................ 19

6.6. Setting the temperatures ................................................................................................. 19

6.7. AUTOSTART ON / OFF .................................................................................................. 19

6.8. Remote control: activate – deactivate ............................................................................. 20

7. Safety installations...................................................................................................................... 21

7.1. Excess temperature protection ....................................................................................... 21

7.2. Low level protection ........................................................................................................ 21

8. Troubleshooting guide / Error messages .................................................................................... 21

9. Electrical connections ................................................................................................................. 23

10. Remote control .................................................................................................................. 24

10.1. Setup for remote control ................................................................................................. 24

10.2. Communication with a PC or a superordinated data system .......................................... 24

10.3. List of commands ............................................................................................................ 25

10.4. Status messages ............................................................................................................ 25

10.5. Error messages ............................................................................................................... 26

11. Cleaning / repairing the unit .............................................................................................. 27

11.1. JULABO Service – Online remote diagnosis .................................................................. 29

11.2. Draining ........................................................................................................................... 30

12. Warranty conditions .......................................................................................................... 31

13. Example Installation Log ................................................................................................... 32

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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.

JULABO water baths are not suitable for direct temperature control of foods, semi­luxury 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

 The recirculating coolers are operated via the splash-proof keypad. The

implemented microprocessor technology allows to set and to store the setpoint that

PID1

RS232

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.

 Electrical connections:

1. The serial interface RS232 allows modern process technology without
additional interface.

2. Alarm output for external alarm message.

 Manually adjustable by-pass (handwheel) to reduce the pump capacity

(e. g. for glass equipment).

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 unit may be

operated only by persons who are absolutely familiar with these materials and the unit. These
persons must be fully aware of possible risks.

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

Tel. [phone] [e-mail]
Fax [phone] www.julabo.de

4

Safety recommendations for the operator

 You received a product developed for industrial use. Nevertheless, avoid strikes to the housing,

vibrations, damages to the keypad foil (keys, display) or contamination.

 Make sure the product is regularly checked for proper condition. Regularly check (at least every

2 years) the proper condition of the mandatory, warning, prohibition and safety labels.

 Take care that the mains supply features a low impedance to avoid any negative affects on the

instrument being operated in 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 influence other units with components susceptible to magnetic fields (e.g. a
monitor). We recommend to keep a minimum distance of 1 m.

 Permissible ambient temperature: max. 40 °C, min. 5 °C.
 Permissible relative air humidity: 50 % (40 °C).
 Do not store in an aggressive atmosphere. Protect from contaminations.
 Do not expose to sunlight.

Appropriate Operation

Only qualified personnel is authorized to perform configuration, installation, maintenance and repairs of
the water bath.
Routine operation can also be carried out by untrained personnel who should however be instructed by
trained personnel.

Use

For the use according to the intended purpose, special material requirements have to be respected
(bath fluids). Only use non-acid and non corroding materials.
Observe all warnings for the used materials (bath fluids) and the respective instructions (safety data
sheets).
Only use the unit in well ventilated areas. (see page 12).
The recirculating coolers are not for use in explosive atmosphere

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

2

or
2

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.

Warning label W00: Colors: yellow, black
Danger area. Attention! Observe instructions.
(operating manual, safety data sheet)

Mandatory label M018: Colors: blue, white
Carefully read the user information prior to beginning operation.
Scope: EU

Semi S1-0701 Table A1-2 #9
Carefully read the user information prior to beginning operation.
Scope: USA, NAFTA

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2.1. Installation Log for FL20006

EN 378-4:2008-06

Documentation

The operator is obliged to keep an installation log for the refrigeration unit if the
filling volume of the refrigerant exceeds 3 kg!

The installation log must be kept with the unit.
If the information and data is recorded on a computer, the current status must be
printed out (hard copy) and kept with the unit.
It must be assured that the log is available to an expert in case of repairs and
repeated inspections.

The installation log must include the following information:
See example on page 32

2.2. Disposal

This unit contains the refrigerant R404A, which at this time is 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.

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 crossed­out 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!

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2.3. EC Conformity

7

2.4. Technical specifications

Recirculating Cooler

Cooling
Working temperature range °C -25 ... +40 -25 … +40
Temperature stability °C ±0.5
Temperature selection: digital
via key pad indication on LED-DISPLAY
remote control via personal computer indication on monitor
Temperature indication: LED-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
Cooling capacity
Medium: Mixture water-glycol
Cooling compressor 1--stage
Refrigerant R404A

Electrical connections:
Computer interface RS232
Alarm output for external alarm signal

Circulating pump:
discharge, max. at 0 bar l/min 80 80
pressure, adjustable at 0 Liter bar 0.8 ... 6.0 0.8 ... 6.0
Feed pressure indication bar Manometer
Filling level indicator sight glass
Filling volume from ... to liters 15 ... 37
Dimensions (WxLxH) cm 95x115x161
Weight kg 360 330
Ambient temperature range °C 5 ... 40
Return flow temperature °C 80 max.
Cooling water
Flow rate at 15 °C inlet temperature

Noise level, 1 m distance dBA 73

IP class according to IEC 60 529 IP 21

Mains power connection 400 V/3PNPE/50 Hz V/ Hz 360-440/3PNPE /50 360-440/3PNPE /50

Current input at 400 V A 18 18

Mains power connection 230 V/3PNPE/60 Hz V/ Hz 207-253/3PPE /60 207-253/3PPE /60

Current input at 230 V A 36 36

All measurements have been carried out at: rated voltage and frequency,
ambient temperature: 20 °C

°C
kW

l/min ----- 24

FL20006 FLW20006
air cooled water coolrd

+20 0 -10 -20 +20 0 -10 -20

20.0 10.0 6.0 2.5 20.0 12.0 7.0 3.0

8

Warning functions and safety installations

Excess temperature protection 85 °C - fixed value
Low liquid level protection float switch
Alarm message optical + audible (permanent)
Excess temperature - Warning function 75 °C
Overload protection for compressor and pump motor
Classification according to 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. mains fluctuations of ±10 % are permissible.

The unit corresponds to Class I

Overvoltage category II
Pollution degree 2

Caution:

The unit is not for use in explosive environment.

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).

9

2.5. Cooling water connection

Only for water cooled models - FLW:
Cooling water pressure (IN / OUT ) max. 6 bar
Difference pressure (IN - OUT ) 2 bar to 6 bar
Flow rate on FLW 20006 typical 24.0 l/min
Cooling water temperature 15 °C

Recommended quality of cooling water:

pH – value
Sulfate [SO4 2- ]
Hydrocarbonate [HCO3- ] / Sulphate [SO4 2-]
Hardness [Ca2+, Mg2+] / [HCO3-]
Alkalinity
Conductivity
Chloride (CL-)
Phosphate (PO43-)
Ammonia (NH3)
Free Chlorine
Ferri Ions (Fe3+ )
Mangano Ions (Mn2+)
Carbon dioxide (CO2)
Hydrosulfide (H2S)
Content of oxygen
Algae growth

Suspended solids impermissible

Notice: Cooling water circuit

Risk of oil leaking from the refrigeration system (compressor) of the recirculating
cooler into the cooling water in case of a fault in the cooling water circuit!
Observe the laws and regulations of the water distribution company valid in the
location where the unit is operated.

7,5 to 9,0
< 100 ppm
> 1 ppm
> 0,5 dH
60 ppm < [HCO3-] < 300 ppm
< 500 μs / cm
< 50 ppm
< 2 ppm
< 0,5 ppm
< 0,5 ppm
< 0,5 ppm
< 0,05 ppm
< 10 ppm
< 50 ppm
< 0,1 ppm
impermissible

Notice:

Danger of corrosion of heat exchanger due to unsuitable quality of cooling
water.

 Due to its high content of lime hart water is not suitable for cooling and causes

calcination of the heat exchanger.

 Ferrous water or water containing ferrous particles will cause formation of rust

even in heat exchangers made of stainless steel.

 Chlorous water will cause pitting corrosion in heat exchangers made of stainless

steel.

 Due to its corrosive characteristics distilled and deionized water is unsuitable and

will cause corrosion of the bath. .

 Due to its corrosive characteristics sea water is not suitable.
 Due to its microbiological (bacteria) components which settle in the heat

exchanger untreated and unpurified river water and water from cooling towers is
unsuitable.

 Avoid particulate matter in cooling water.
 Avoid putrid water.

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