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UWT circulation heat exchangers  

 

 

YAWE0029 / 29 June 2018 

Maintenance

 

17

 

Maintenance 

7.1  

Cleaning 

 

  Withdraw the mains plug before cleaning the unit! 

Cleaning can be carried out with water with a few drops of a surfactant (washing-up liquid) added and 
with the aid of a damp cloth. 

 

  No water should penetrate into the control section! 

 

  Carry out appropriate decontamination if dangerous material is spilt on or in the 

unit. 

  The cleaning or decontamination method is determined through the user's spe-

cialist knowledge. In case of doubt contact the manufacturer. 

7.2 

Servicing and repair 

 

  Withdraw the mains plug before all servicing and repair work! 

  Have repairs in the control section carried out only by specialists! 

LAUDA circulation heat exchangers need practically no servicing. If the temperature stabilising liquid in 
the laboratory circuit becomes contaminated, it should be renewed. 

 

 

Contaminated cooling liquid in the cooling circuit can lead to blockage of 
the heat exchanger, pump and bypass valve. 

The following safety fuses are located on the mains circuit board. If a fuse blows, re-
place it only by a fuse with the specified data: 

  Mains fuse F2 and F3 6.3A slow-blow (EEF 006) (

 mains indicator lamp no 

longer illuminates). 

  Low voltage fuse F1 0.2A quick-blow (EEF 002) (

 temperature display does 

not illuminate). 

 

Summary of Contents for UWT 10000

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Page 3: ...DA DR R WOBSER GMBH CO KG Pfarrstraße 41 43 97922 Lauda Königshofen Germany release 06 2018 i replaces release 08 2016 h 03 2010 01 2009 03 2006 Telephone 49 0 9343 503 0 Fax 49 0 9343 503 222 E mail info lauda de Internet http www lauda de Operating instructions UWT circulation heat exchangers UWT 3000 UWT 6000 UWT 10000 ...

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Page 5: ...rated by technically qualified personnel Never operate the equipment without the heat transfer liquid Do not start up the equipment if it is damaged or leaking the supply cable is damaged Switch off the equipment and pull out the mains plug for servicing or repair before moving the equipment Do not carry out any technical changes on the device Have the equipment serviced or repaired by properly qu...

Page 6: ...onnection 12 5 2 Filling 13 5 3 Draining frost protection 14 6 Starting up 15 6 1 Mains connection 15 6 2 Switching on 15 6 3 Adjusting the outflow pressure with the bypass valve 16 7 Maintenance 17 7 1 Cleaning 17 7 2 Servicing and repair 17 7 3 Spare parts ordering and rating label 18 8 Technical data and circuit diagram 19 8 1 Technical data 19 8 2 EU conformity 20 8 3 List of components with c...

Page 7: ...11 Worldwide No limitation For the USA only Instructions for Class A digital devices This equipment has been tested and found to comply with the limits for Class A digital device pursuant to Part 15 of the FCC Federal Communication Commission Rules These limits are designed to pro vide reasonable protection against harmful interference when the equipment is operated in a commer cial environment Th...

Page 8: ...ssible material defects Allow for expansion of the heat transfer liquid at elevated temperatures Always pull out the mains plug before cleaning maintenance or moving the device Repairs must be carried out by properly qualified personnel only Values for temperature control and indicating accuracy apply under normal conditions according to DIN 12876 High frequency electromagnetic fields may under sp...

Page 9: ...T 10000 Filling nozzle for heat transfer liquid Controller with temperature display and operating keys Mains switch with indicating lamp Red warning lamp for overtemperature Yellow warning lamp for low level Pressure indication only at UWT 6000 and UWT 10000 Light emitting diodes K 1 Lights when cooling water valve open K 2 Lights for overtemperature Level indication ...

Page 10: ...uit external inlet of coolant Primary circuit external return flow of coolant Remote socket 15N with alarm outputs and remote switch on Mains cable Drain tap Rating label Laboratory circuit return pipe for load Laboratory circuit flow pipe for load Primary circuit external inlet of coolant Primary circuit external return flow of coolant Remote socket 15N with alarm outputs and remote switch on Mai...

Page 11: ... UWT and the nominal transfer power of the heat exchanger Example The UWT 6000 has a nominal transfer power of 6000 watts 3 3 Principle of operation The circulation heat exchanger dissipates heat from a laboratory circuit secondary circuit into an ex ternal cooling circuit primary circuit To achieve this the circulation heat exchanger is connected to a supply of cooling liquid available at the cus...

Page 12: ...ontact on the remote socket 15N The bath level is monitored by a float switch A yellow warning lamp is switched on if the level is too low With a low level or overtemperature in the bath the pump is not switched off The mains feed cable is protected inside the unit by one or more safety fuses The pump is switched of by a winding temperature detector or overcurrent circuit breaker 3 6 Interfaces re...

Page 13: ...on For units LAUDA Cat No 1 Operating instructions this document All UWT s YAWE0029 1 Plug for filling opening All UWT s EZV 086 1 Adjusting wheel for bypass valve All UWT s not available separately 4 Hose olive G for hoses UWT 3000 EOA 004 4 Hose olive G 1 for 1 hoses UWT 6000 UWT 10000 EOA 003 4 Hose clips for hoses UWT 3000 EZS 015 4 Hose clips for 1 hoses UWT 6000 UWT 10000 EZS 016 1 Remote pl...

Page 14: ...int Wait approx 1 hour For operation contacts 1 and 3 on the remote socket 15N must be joined To do this use the remote plug from the accessories supplied with the unit Further status signals are present on contacts 4 5 and 6 of the remote socket 15N Connect the external coolant inlet and return maximum pressure 8 1 Connect the load to the laboratory circuit Always ensure the largest possible insi...

Page 15: ...maged The units are intended for use with water or glycol water mixture in the coolant circuit and laboratory circuit Only pressure sealed loads can be connected Make sure that when connecting an external load the liquid level does not fall impermissibly through filling the load refill with liquid if required Contaminated cooling liquid in the cooling circuit can lead to blockage of the heat excha...

Page 16: ...nection Cooling liquid outlet using a waterproof industrial vacuum cleaner Draining the unit Switch off the circulation heat exchanger withdraw the mains plug Let out the heat transfer liquid through the drain tap fit a hose for this The drain tap is located right at the bottom on the back panel Unclip the hoses on the laboratory circuit Open the filling nozzle at the front With compressed air or ...

Page 17: ...uit at its highest point The prevailing discharge pressure is indicated on the pressure gauge at the front of the unit only UWT 6000 and UWT 10000 This enables conclusions to be made regarding the de livery rate and any disturbances Press the set point indicator key Changing the set point While the set point is being displayed adjust the set point with the keys and Then confirm the new value with ...

Page 18: ...ally by a timeout of 10 s 6 3 Adjusting the outflow pressure with the bypass valve The internal bypass valve is set at the factory to 0 5 L min Adjustment is only necessary if the bath temperature does not reach a new lower set point with a closed laboratory circuit no flow Only adjust the internal bypass if the flow is unsuitable Withdraw the mains plug and open the unit Close the laboratory circ...

Page 19: ...er 7 2 Servicing and repair Withdraw the mains plug before all servicing and repair work Have repairs in the control section carried out only by specialists LAUDA circulation heat exchangers need practically no servicing If the temperature stabilising liquid in the laboratory circuit becomes contaminated it should be renewed Contaminated cooling liquid in the cooling circuit can lead to blockage o...

Page 20: ... incorrect items Your contact for service and support LAUDA Service Constant Temperature Equipment Telephone 49 0 9343 503 350 English and German Fax 49 0 9343 503 283 E Mail service lauda de We are available any time for your queries suggestions and criticism LAUDA DR R WOBSER GMBH CO KG Pfarrstraße 41 43 97922 Lauda Königshofen Germany Telephone 49 0 9343 503 0 Fax 49 0 9343 503 222 E mail info ...

Page 21: ...the laboratory circuit secondary circuit supplies a load Heat transfer liquid water or glycol water mixture Temperature display green 7 segment LED Operating temperature range C 8 25 Setting resolution C 0 1 Display resolution C 0 1 Temperature stability K 1 Bath volume from to L 7 12 35 45 35 45 35 45 Factory setting for volume flow through bypass valve for closed laboratory circuit L min 0 5 0 5...

Page 22: ...ied cooling power depends significantly on the volume flow in the primary and laboratory circuits The tempera ture difference between the primary cooling circuit and the laboratory circuit should be at least 5 K Technical modifications reserved 8 2 EU conformity The device complies with the basic health and safety requirements outline in the Directives listed below Machinery Directive 2006 42 EC E...

Page 23: ...nallampe Störung Pilot lamp Fault Lampe témoin Per turbation EXS 060 EXS 060 EXS 060 M 1 Pumpenmotor Pump motor Moteur de Pompe EM 101 EM 101 Pumpe kpl Pump cpl Pompe cpl BPS 066 BPS 066 EMP 095 N 1 Regler mit Anzeige Controller with dis play Contrôleur de protec tion de réseau EOA 094 1 EOA 094 1 EOA 094 1 T 1 Transformator Transformer Transformateur EIT 109 EIT 109 EIT 109 X 1 Klemmleiste Strip ...

Page 24: ...UWT circulation heat exchangers 22 Technical data and circuit diagram YAWE0029 29 June 2018 ...

Page 25: ... LAUDA voir plaque signalétique Typ Type Type Serien Nr Serial no No de série mit folgendem Medium betrieben wurde was used with the below mentioned media a été utilisé avec le liquide suivant Darüber hinaus bestätigen wir daß das oben aufgeführte Gerät sorgfältig gereinigt wurde die Anschlüsse verschlossen sind und sich weder giftige aggressive radioaktive noch andere gefährliche Medien in dem Ge...

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Page 28: ...LAUDA DR R WOBSER GMBH CO KG P O Box 12 51 97912 Lauda Koenigshofen Germany Phone 49 9343 503 0 Fax 49 9343 503 222 E mail info lauda de Internet www lauda de ...

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