Hydro Evaporation Water Baths
H 5 V, H 6 V, H 9 V, H 11 V, H 19 V
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LAUDA Hydro Evaporation Water Bath models H 5 V are special Water Baths for gentle steaming work with different kinds
of laboratory glasses. The Water Baths are equipped with a removable lid with a hole which is covered by a 9-part set of rings
made of heat-resistant plastic material. The exterior housing is made of electrolytically galvanised sheet steel, powdercoated. All other constructive parts of the housing as well as the heating element are made of stainless steel.
LAUDA Hydro Evaporation Water Bath models H 6 V and H 9 V are special Water Baths for gentle evaporation work with
different laboratory glass vessels. The openings in the fixed cover frame have a diameter of 131 mm and are covered by sets
of rings made of heat-resistant plastic material. Behind each opening, a support rod of 600 mm length and 12 mm diameter
can be screwed in for safe fixing of the evaporation vessels. The support rods are included in the scope of supply. The exterior
housing is made of electrolytically galvanised and powder-coated sheet steel. All other constructive parts of the housing as
well as the heating element are made of stainless steel.
LAUDA Hydro Evaporation Water Bath models H 11 V and H 19 V are special Water Baths for gentle steaming work with
different kinds of laboratory glasses. These Water Baths were especially designed for protected use in fume hoods. All constructive parts of the housing as well as the heating element are made of stainless steel.
The temperature can be set between approx. 5 K above ambient and boiling point via an electro-mechanical temperature
controller with capillary tube sensor, and are protected by a low water cut-off in case of dry running of the heating element.
The heating element and the sensors of both temperature controller and low water cut-off are covered by a perforated floor
to set up vessels.
Before installation, please check whether contents of package are in good order and complete. Should you note any damages or have any reasons for complaint, please contact your supplier or directly:
1Use of the Evaporation Water Bath ...................................................................................................................................... 7
4Transport, Setup and Location of the Evaporation Water Baths .......................................................................................... 8
5Operating Voltage ................................................................................................................................................................. 8
6Filling Water into the Evaporation Water Bath .................................................................................................................... 9
7Adjustable Water Level Regulator (Accessory Order-No. A000024) ............................................................................... 9
8Sets of Rings .......................................................................................................................................................................... 9
9Support Rods (H 6 V and H 9 V) ......................................................................................................................................... 9
11 Maintenance and Support .................................................................................................................................................. 10
11.1
12 Disposal of Old Appliances ................................................................................................................................................. 12
13 Technical Data .................................................................................................................................................................... 13
Intended Use ................................................................................................................................................................................... 7
Improper Use .................................................................................................................................................................................. 7
Low water cut-off.........................................................................................................................................................................11
15 Examples for connection to the mains supply .................................................................................................................... 17
15.1
15.2
16 List of spare parts ................................................................................................................................................................ 19
Evaporation Water Bath Hydro H 5 V .....................................................................................................................................13
Evaporation Water Baths Hydro H 6 V and H 9 V ...............................................................................................................14
Evaporation Water Baths Hydro H 11 V and H 19 V..........................................................................................................15
Examples for connection to the mains .....................................................................................................................................18
Evaporation Water Bath Hydro H 5 V .....................................................................................................................................19
Evaporation Water Baths Hydro H 6 V und H 9 V ...............................................................................................................20
Evaporation Water Baths Hydro H 11 V and H 19 V..........................................................................................................21
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1Use of the Evaporation Water Bath
1.1
LAUDA Hydro Evaporation Water Baths are used with tap water for gentle steaming works with different kinds of laboratory glasses in a temperature range of approx. 5 K above ambient to boiling point.
The information contained in these operating instructions must by all means be read and observed. Only then can a perfect operation of the LAUDA Hydro Evaporation Water Bath be guaranteed. The units may only be installed and operated
by persons who have made themselves familiar with these operating instructions.
1.2
Use the Evaporation Water Bath with tap water only. Other media, e. g. oils or acids, will lead to damages and, possibly,
total unit failure. Neither aggressive nor corrosive waters may be used as a thermostating liquid. The Evaporation Water
Bath may not be used in laboratory areas with aggressive or corrosive ambient conditions. It is not permissible to heat up or
vaporise aggressive media, e. g. hydrochloric acid, in the unit itself or in its vicinity. The temperature work must not create
an explosive atmosphere in the vicinity of the unit. The Evaporation Water Bath may not be operated in potentially explosive surroundings.
LAUDA Hydro Evaporation Water Baths are not suitable for direct temperature work of foodstuffs, beverages and tobacco or for medical-technical and pharmaceutical products. Direct temperature work means unprotected contact of the
substances with the Evaporation Water Bath filling. LAUDA Hydro Evaporation Water Baths, operated in a laboratory, are
no Medical Devices. They neither fall under national nor international Medical Device Directives nor have to be used and
applied accordingly.
Intended Use
Caution:
Hot surfaces at temperatures above 50 °C. Danger of burns, and danger of scaldings
through steam released when opening the lid of the Evaporation Water Bath. It is recommended to wear suitable safety gloves.
Improper Use
2Warranty
For all laboratory apparatus and their accessories from LAUDA-GFL Gesellschaft für Labortechnik mbH, there is a warranty claim, as well for spare parts, repairs and modifications, carried out by LAUDA-GFL. In order to identify defective
units, we require both model and serial number on the nameplate at the back, left-hand side of the Evaporation Water
Bath and, if applicable, a copy of the invoice.
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3Before Installation / Initiation
The information given in the present manual must by all means be carefully read and observed. Only then can a perfect
functioning of the Evaporation Water Bath be guaranteed. Safety precautions are additionally marked with the following
symbols.
Read and observe the
operating instructions
Warning of hot liquids
and vapour
Warning of
dangerous
electrical voltage
Warning of
hot surfaces
General
warning
Before maintenance and repair
disconnect the unit all-pole from
the electrical mains (pull the plug
from the socket).
4Transport, Setup and Location of the Evaporation Water Baths
Place on solid, even and level surfaces inside buildings or in fume hoods only. Make sure to place the
unit only on a water-tight, temperature-resistant and non-flammable surface. The unit is not suitable
for use in potentially explosive surroundings. The Evaporation Water Baths H 5 V, H 6 V and H 9 V are
not suitable for use in fume hoods when, at the same time, aggressive media, such as e. g. hydrochloric
acid, are evaporated.
5Operating Voltage
The main switch of the Evaporation Water Bath must be off (position O). The operating voltage on the
nameplate (at the back of the unit) must be the same as the mains voltage. The Evaporation Water Bath
must be connected to a correctly installed shock-proof socket. The bath is a protection class I electrical
appliance, a connection to the earth conductor (PE) must be ensured. For information on the required
mains fuse please view the technical data, chapter 10 of this manual. The electrical connection must
ensure an all-pole separation from the mains supply at any time. The mains cable must not touch hot surfaces of the unit
anywhere. It may not be led underneath the unit. In case of compliance, connect the unit to the mains.
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6Filling Water into the Evaporation Water Bath
Use the Evaporation Water Bath only with tap water. Even stainless steel will corrode when used improperly. Use neither ferruginous nor chlorous water, in order to prevent rust formation and pitting. Using distilled or deionised water will also ultimately lead to corrosion in the bath and must, therefore, be avoided.
Other media, such as oil, acid, or other additives, not approved by LAUDA-GFL, to prevent bacteria contamination (chlorine or copper sulphate), may lead to damages to the bath basin, the screw connections of the ducts and
the heating element.
Before initiation, fill water into the Evaporation Water Bath. For maximum filling quantities please refer to the technical
data, chapter 10 of these instructions. In case of overfilling water, the excess water quantity will flow off through the outlet
of the adjustable water regulator (lower connection, see illustration below). Please use only tap water to operate the bath.
Other media, such as oils or acids, may lead to damages to the bath basin, the screw connections of the ducts or the heating element.
7Adjustable Water Level Regulator (Accessory Order-No. A000024)
The adjustable water regulator at the back of the Evaporation Water Bath serves to level out the loss of water due to evaporation during operation, thus maintaining the set water level. The upper hose connection of the water regulator is the
water supply. Using a laboratory hose with an inner diameter of max 9 mm, connect this to the water mains. The lower
hose connection is the overflow of the water regulator. Connect a laboratory hose (inner diameter of max 9 mm) and lead
it into a drain on a lower level, ensuring free flow of the water without it being banked up.
Secure all hose connections with hose clips. The required water level
can be adjusted with the outlet tube of the water regulator. First
loosen the the screw connection of the outlet tube, using a spanner
GW 27. Set the required water level by pulling out or pushing in the
tube in the regulator. Then tighten the screw connection again. Now
open the tap of the mains supply very slightly to operate the Evaporation Water Bath.
8Sets of Rings
The plastic sets of rings are used to cover all parts of the bath openings that are not required.
9Support Rods (H 6 V and H 9 V)
By turning clockwise, the support rods, which are to be placed into the openings at the back of the bath rim, can be fastened.
Page 10
10Starting Operation
Switch on the main switch. The green pilot lamp in the main switch will light up. Set the required temperature on the control knob of the temperature regulator on the front of the unit. The temperature range of the bath is between approx. 5K
above ambient and boiling point. For safe operation, especially at higher temperatures, it is important to cover all parts of
the bath openings that are not required with the sets of rings.
Caution, please observe by all means.
To turn off for longer shut-down periods switch the main switch to position O and disconnect the unit from the mains.
Empty the Evaporation Water Bath and dry the cabinet interior to prevent bacterial contamination.
Caution:
Hot surfaces at temperatures above 50 °C. Danger of burns and danger of scaldings
through steam released when opening the Evaporation Water Bath. It is advisable to wear
suitable safety gloves.
11Maintenance and Support
The LAUDA Hydro Evaporation Water Bath is constructed to withstand even rough service conditions. Nevertheless, the
unit should only be subjected to increased strain within sensible limits.
Make sure to prevent liquids coming into contact with cable connections or the inside
of the electrical appliance.
Before opening and/or cleaning the unit, pull the plug from the socket.
Danger of electrical shock!
The perforated floor can be removed from the bath for cleaning procedures.
Caution, danger of scaldings! Do not reach into the hot water in the tank.
Lime deposits in the tank can be removed with commercial descaling agents (e. g. rea-calc® of M/s CHEMOTEC
GmbH, 63486 Bruchköbel, Germany). Any descaling agent used must be admitted for use with stainless steel and must
only be used according to the manufacturer's instructions. After descaling the boiler, rinse it several times with water in
order to safely remove all remaining traces of the descaling agent. Never use products containing hydrochloric acid. These
will damage the heating elements, the temperature sensors as well the tank and the screw connections of the ducts.
The stainless steel surfaces of the basin can be cleaned and its original shine be restored with commercial stainless steel
polishing agents (e. g. “Helios Brillant“ of M/s Ecolab Deutschland GmbH, 40789 Monheim, Germany). The powdercoated surfaces of the housing can be cleaned with mild, non-abrasive and pH neutral cleaning agents. Never use
cleaning agents with solvents. It is advisable to change the water in the basin in regular intervals in order to prevent bacterial contamination. Should the Evaporation Water Bath have been contaminated with dangerous substances, cleaning and
decontamination measures must be carried out according to the safety data sheets of these substances. It may be necessary afterwards to have the unit tested for function and safety by a trained electrician or by the service department in the
manufacturing plant.
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LAUDA Hydro Evaporation Water Baths are set and calibrated at a temperature of 50 °C. For re-calibration during servicing, an instruction to calibrate the temperature controller can be obtained from LAUDA-GFL. Please advise both
model and serial number of the unit in such a case.
For technical support concerning LAUDA Hydro Evaporation Water Baths, please do not hesitate to contact our Service
Department. Please contact your dealer or us before returning a defective unit and do not return it before consulting us.
A defective unit may only be returned thoroughly cleaned, decontaminated, if necessary, and carefully packed, accompanied by a detailed description of the defect, to
LAUDA-GFL Gesellschaft für Labortechnik mbH
Schulze-Delitzsch-Straße 4
30938 Burgwedel - Germany
Servicings, repairs and modifications must be carried out according to the General Technical Rules and Regulations
(§2, chapter 2, DGUV regulation 3) by a trained electrician (§2, chapter 3, DGUV regulation 3)
Only original spare parts may be used. Always demand a confirmation (company, date, signature) on the kind and extent of
the service(s) carried out.
11.1
The Evaporation Water Bath's heating element is protected against running dry by a low water cut-off (thermostatic overtemperature limiter). In case of low water, power supply to the heating element is cut off. Before restarting the unit, the
bath tank must cool down and then be filled with water, as described in chapter 5 – Filling Water into the Evaporation
Water Bath, and the triggered low water cut-off must be released. To do so, unscrew the black cap nut. Within the thread,
a white plastic pin will now be visible which must be gently pushed inside (e. g. with a pen) until a soft clicking sound can be
heard. The efficiency of the low water cut-off can be checked by a temperature-controlled heat-up of the capillary tube
sensor, e. g. with a hot air fan (after loosening the clamps from the heating element) exceeding the switch-off temperature of 135°C. The contact position of the fuse can be checked by a resistance measurement. If the fuse was triggered,
the safety switch F1 will be open. This examination must be carried out by a trained electrician.
Ill.: H 5 V
Low water cut-off
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12Disposal of Old Appliances
LAUDA-GFL will take responsibility, within the scope of the legal directives, for an environmentally sound handling and
disposal of all used LAUDA-GFL units as of the production year 1995 that are returned to us free of charge and will have
them materially recycled. Before a unit is returned, a legally binding declaration must be provided from the sender confirming that the unit is free from harmful and/or hazardous contaminations as well as from hazardous substances caused by
the previous use of the unit.
LAUDA-GFL laboratory apparatus are exclusively designed for industrial use and may not be disposed of through public
waste disposal authorities.
EAR Registration Number WEEE-ID.NO 67770231
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13Technical Data
13.1
Exterior dimensions (W x D x H)342 mm x 400 mm x 180 mm
Interior dimensions (W x D x H)240 mm x 240 mm x 120 mm
Number and diameter of openings in the bath cover1 opening / 192 mm
Maximum water level above perforated floor75 mm
Maximum filling quantityapprox. 5 litres
to overflow of the adjustable
water regulator
Temperature rangeapprox. 5 K above ambient to boiling point
Temperature controlElectro-mechanical temperature regulator with
Temperature settingAnalogue, with control knob
Temperature constancyapprox. +/- 3 K
Over-temperature cut-out
(low water cut-off)
Evaporation Water Bath Hydro H 5 V
H 5 V
covered with 9-part set of rings,
made of heat-resistant plastic material,
with openings in a spacing of 32,5 mm, 52,5 mm, 72,5 mm,
92,5 mm, 112,5 mm, 132,5 mm, 153,5 mm and 173,5 mm
capillary tube sensor
Electro-mechanical temperature limiter with
capillary tube sensor.
Switch-off temperature 135 °C / -10 K
Electrical connection230 V +/-10 %, 50 / 60 Hz, 1,0 kW
Mains connectionShock proof plug
Mains fusemin. 10 A - max. 16 A
Protection type / Protection classIP20 / I
Ambient conditionsUse only indoors
(not in potentially explosive surroundings)
Height above sea levelup to 2000 m NN
Ambient temperature+10 °C to +40 °C
Humiditymax. 80 % relative humidity to 31 °C,
decreasing to 50 % relative humidity at 40 °C
Weight9,0 kg
Page 14
13.2
Exterior Dimensions (W x D x H)
Dim H without support rod
Number and diameter4 openings / 131 mm6 openings / 131 mm
of the bath's openingscovered with 4-part sets of rings,
Evaporation Water Baths Hydro H 6 V and H 9 V
H 6 VH 9 V
710 mm x 270 mm x 192 mm1010 mm x 270 mm x 192 mm
made of heat-resistant plastic material,
with openings in a spacing of 32,5 mm,
52,5 mm and 72,5 mm
covered with 6-part sets of rings,
made of heat-resistant plastic material,
with openings in a spacing of 32,5 mm,
52,5 mm, 72,5 mm, 92,5 mm and 112,5 mm
Usable height (Perforated floor
to upper rim of bath)
Maximum water level above
perforated floor
Maximum filling quantity5,3 litres8,0 litres
to overflow of adjustable
water regulator
Temperature rangeapprox. 5 K above ambient to boiling pointapprox. 5 K above ambient to boiling point
Temperature controlElectro-mechanical temperature regulator with
Temperature settingAnalogue, on the control knobAnalogue, on the control knob
Temporal temperature constancy approx. +/- 3 Kapprox. +/- 3 K
Over-temperature cut-out
(low water cut-off)
Electrical connection230 V +/-10 %, 50 / 60 Hz, 1,0 kW230 V +/-10 %, 50 / 60 Hz, 1,5 kW
Mains connectionShock proof plugShock proof plug
Mains fusemin. 10 A - max. 16 Amin. 10 A - max. 16 A
Protection type / Protection class IP20 / IIP20 / I
90 mm90 mm
50 mm50 mm
Electro-mechanical temperature regulator with
capillary tube sensor
Electro-mechanical temperature limiter with
capillary tube sensor.
Switch-off temperature 135 °C / -10K
capillary tube sensor
Electro-mechanical temperature limiter with
capillary tube sensor.
Switch-off temperature 135 °C / -10K
Ambient conditionsUse only indoors
(not in potentially explosive surroundings)
Height above sea levelup to zu 2000 m NNup to 2000 m NN
Ambient temperature+10 °C to +40 °C+10 °C to +40 °C
Humiditymax. 80 % relative humidity to 31 °C,
decreasing to 50 % relative humidity at 40 °C
Weight12,4 kg16,2 kg
Use only indoors
(not in potentially explosive surroundings)
max. 80 % relative humidity to 31 °C,
decreasing to 50 % relative humidity at 40 °C
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13.3
Exterior dimensions (W x D x H) 450 mm x 300 mm x 155 mm690 mm x 300 mm x 155 mm
Number and diameter
of the bath's openings
Evaporation Water Baths Hydro H 11 V and H 19 V
H 11 VH 19 V
6 openings / 91 mm8 openings / 111 mm
covered with 4-part sets of rings,
made of heat-resistant plastic material,
with openings in a spacing of 32,5 mm, 52,5 mm
and 72,5 mm
covered with 5-part sets of rings,
made of heat-resistant plastic material,
with openings in a spacing of 32,5 mm, 52,5 mm,
72,5 mm and 92,5 mm
Maximum water level above
perforated floor
Maximum filling quantity10,5 litres18,4 litres
To overflow of the adjustable
water regulator
Temperature rangeapprox. 5 K above ambient to boiling pointapprox. 5 K above ambient to boiling point
Temperature controlElectro-mechanical temperature regulator with
Temperature settingAnalogue, on the control knobAnalogue, on the control knob
Temperature constancyca. +/- 3 Kca. +/- 3 K
Over-temperature cut-out
(low water cut-off)
Electrical connection230 V +/-10 %, 50 / 60 Hz, 1,5 kW230 V +/-10 %, 50 / 60 Hz, 1,5 kW
Mains connectionShock proof plugShock proof plug
Mains fusemin. 10 A - max. 16 Amin. 10 A - max. 16 A
Protection type / protection class IP20 / IIP20 / I
Ambient conditionsUse only indoors
Height above sea levelup to zu 2000 m NNup to zu 2000 m NN
Ambient temperature+10 °C to +40 °C+10 °C to +40 °C
Humiditymax. 80 % relative humidity to 31 °C,
80 mm80 mm
Electro-mechanical temperature regulator with
capillary tube sensor
Electro-mechanical temperature limiter with
capillary tube sensor
Switch-off temperature 135 °C / -10 K
(not in potentially explosive surroundings)
decreasing to 50 % relative humidity at 40 °C
capillary tube sensor
Electro-mechanical temperature limiter with
capillary tube sensor
Switch-off temperature 135 °C / -10 K
Use only indoors
(not in potentially explosive surroundings)
max. 80 % relative humidity to 31 °C,
decreasing to 50 % relative humidity at 40 °C
Weight5,8 kg8,1 kg
Page 16
14Circuit Diagram
E1Heating element
F1Low water cut-off
H1Pilot lamp heating element
Q1Temperature regulator
S1Main switch
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15Examples for connection to the mains supply
Model
Power
Power consumption at mains voltage *
Mains fuse
(F4, F5)
H 6 V
(max. 16 A / Amp.)
H 19 V
Evaporation Water Baths models H 5 V to H 19 V are supplied with a pre-assembled, cast-on shock-proof plug.
Make sure to connect to a protective conductor terminal.
All Evaporation Water Baths supplied for 230 V (see information on the nameplate) can be connected to all power supplies of 220 V or 230 V. Maximum grid impedance Zmax = 0,135W. If necessary, this value should be requested from
the responsible energy supply company.
H 5 V, H 6 V, H 9 V, H 11 V, H 19 V
for 230 V with power supply 230 V / N / PE / 50/60 Hz,
connected through 3-pole shock-proof (Schuko) plug system.
H 5 V, H 6 V, H 9 V, H 11 V, H 19 V
for 230 V with power supply 400 V / 3 / N / PE / 50/60 Hz,
connected through 3-pole shock-proof (Schuko) plug system.
H 5 V, H 6 V, H 9 V, H 11 V, H 19 V
for 230 V with power supply 220 V / 3 / N / PE / 50/60 Hz,
connected through 3-pole shock-proof (Schuko) plug system.
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16List of spare parts
16.1
Pos.Art.-No.Article
11985 Accessory Support Rod
2 A 000024 Adjustable Water Regulator
30013415 Low water cut-off
40013404 Temperature controller
50014312 Stand
60012426 Main switch
70014545 Control knob
80012633 Pilot lamp, yellow
90012311 Mains connection cable
100012229 Heating element, 1000 W / 230 V
110026408 Set of rings
Evaporation Water Bath Hydro H 5 V
0014547 Lid for control knob 0014545
0014548 Disc for control knob 0014545
When ordering spare parts, please always state model and serial numbers of the Evaporation Water Bath in question
(information see nameplate on the back of the unit).
Page 20
16.2
Pos.Art.-No.Article
10015405 Support rods
20014110 Water level regulator
30014312 Stand
40012241 Heating element, 1000 W / 230 V (model H 6 V)
50013404 Temperature regulator
60012426 Main switch
70014545 Control knob
80012633 Pilot lamp
90012311 Mains connection cable
100013415 Low water cut-off
110026408 Set of rings (1 pc.)
Evaporation Water Baths Hydro H 6 V und H 9 V
0014601 Collar for water level regulator
0017302 Rubber seal
0012243 Heating element, 1500 W / 230 V (model H 9 V)
0014548 Disc with arrow
0014547 Lid
When ordering spare parts, please always state model and serial numbers of the Evaporation Water Bath in question
(information see nameplate on the back of the unit).
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16.3
Pos.Art.-No.Article
10012426 Main switch
20013404 Temperature regulator
30014512 Control knob
40013415 Low water cut-off
50014103 Adjustable water regulator
60026408 Set of rings
70030006 Mains connection cable
80014503 Stand
90017403 U-profile
100012233 Heating element, 1500 W / 230 V for (model H 11 V)
Evaporation Water Baths Hydro H 11 V and H 19 V
0014525 Disc for control knob
0014553 Lid for control knob
0017302 Rubber seal
0017311 Seal / inner Ø 10 mm
0012237 Heating element, 1500 W / 230 V for (model H 19 V)
When ordering spare parts, please always state model and serial numbers of the Evaporation Water Bath in question
(information see nameplate on the back of the unit).
Page 22
17Accessories
Support Rod, made of stainless steel, for safe fixing of steaming vessels. By turning clockwise, the support rod, which is to be placed into
an opening at the back of the bath rim, can be fastened. Length 316
mm, Ø 12 mm.