Waterbath
WNE 7 - 45
WPE 45
Oilbath
ONE 7 - 45
Operating instructiOns
EXCELLENT page 2
EXCELLENTpage 3
1 General notes and safety notes ............................................................................................................4
1.1 Transport .................................................................................................................................4
2 Technical data ..................................................................................................................................... 5
2.1 Material quality .......................................................................................................................6
2.2 Electrical equipment ................................................................................................................6
2.3 Note on EMC (electromagnetic compatibility) ...........................................................................6
2.4 Brief technical description ........................................................................................................6
2.5 Standard equipment ................................................................................................................ 7
3 Installation ..........................................................................................................................................7
3.1 Initial start-up .......................................................................................................................... 8
3.2 Installation - waterbaths .......................................................................................................... 8
3.3 Installation - oilbaths ............................................................................................................... 9
4 Bath construction and operation ....................................................................................................... 10
4.1 Controls and indications ........................................................................................................ 10
4.2 Switching on ......................................................................................................................... 11
4.3 Setting the parameters ..........................................................................................................11
4.3.1 Temperature setpoint ..........................................................................................................12
4.3.2 Delayed switch-on .............................................................................................................. 12
4.3.3 Hold time of the setpoint temperature ................................................................................13
4.3.4 Setpoint-dependent waiting time ........................................................................................13
4.3.5 Circulating pump (WPE 45 only) .........................................................................................14
4.3.6 Temperature monitor ..........................................................................................................15
4.3.7 Level monitor......................................................................................................................15
4.3.8 Setup menu ........................................................................................................................15
4.3.8.1 Calibration .......................................................................................................................16
4.3.8.2 Selection of temperature monitor (waterbaths only) ......................................................... 17
5 Programming example of a programme sequence ............................................................................. 17
6 Monitoring the programme sequence ...............................................................................................18
7 Temperature monitor and protection devices ..................................................................................... 19
7.1 Mechanical temperature monitor: temperature limiter............................................................19
7.2 Electronic temperature monitor .............................................................................................19
7.2.1 Adjustable temperature monitor (TWW) Protection Class 3.1 to DIN 12880 ......................... 20
7.2.2 Adjustable temperature limiter (TWB) Protection Class 2 to DIN 12880 ................................ 20
7.3 Monitor relay .........................................................................................................................20
8 Use of the cover (special equipment) .................................................................................................21
9 Level control (special equipment) .......................................................................................................21
10 Cooling system (special equipment) ................................................................................................. 22
11 Cleaning and maintenance .............................................................................................................. 22
12 Check list for fault rectification ........................................................................................................23
13 Action on supply failure ..................................................................................................................23
14 Glossary ..........................................................................................................................................23
15 CE Conformity of Declaration ..........................................................................................................24
16 Address and customer service ..........................................................................................................25
17 Index .............................................................................................................................................. 26
EXCELLENT page 4
1 General notes and safety notes
You have purchased a technically fully proven product which has been produced in Germany with the use
of high-grade materials and the application of the latest manufacturing techniques; it has been factory
tested for many hours.
In addition we guarantee the supply of spare parts over 10 years.
Observation of the Operating Instructions is necessary for faultless
operation and for any possible claims under warranty. If these
Instructions are disregarded, all claims under warranty, guarantee and
indemnification are excluded.
This mark on the product means:
Note Operating Instructions
Warning – bath hot when operating
The right to technical modifications is reserved.
Dimensional details are not binding.
1.1 Transport
Always use gloves!
If the units W../O.. 22 to 45 have to be carried, at least 2 persons are required.
Place the bath accurately horizontal and not
on an inflammable support.
EXCELLENTpage 5
2 Technical data
Model 7 1014222945
Volume [liter] 7 10 14 22 29 45
Usable bath length A [mm] 240 350 350 350 590 590
Usable bath width B [mm] 210 210 290 290 350 350
Usable bath depth C [mm] 140 140 140 220 140 220
Housing length D [mm] 468 578 578 578 818 818
Housing width E [mm] 356 356 436 436 516 516
Housing height (with flat cover) F [mm] 238 238 238 296 238 296
Housing height (with gable cover) G [mm] 337 337 347 405 343 401
Weight [kg] 11 14 16 17 24 26
Current consume [A] 5,2 5,2 7,8 8,7 10,4 12,2
Power [W] 1200 1200 1800 2000 2400 2800
Ambient conditions Ambient temperature 5°C - 40°C
rh max. 80% (no condensation)
Overvoltage Category: II
Contamination degree: 2
Setting temperature range 10ºC to 95ºC on waterbaths
with activation of the boiling mode to 100°C, see section
4.3.1
20ºC to 200ºC on oilbaths
Setting accuracy: 0,1°C
Indication accuracy 0,1°C
Working temperature range From 5ºC above ambient temperature on water-
and oilbaths or 15°C above ambient temperature
on waterbaths with circulating pump to nominal
temperature = maximum temperature (see rating plate)
EXCELLENT page 6
2.1 Material quality
Memmert is using stainless steel ( Mat.Ref. 1.4301) for the external casing as well as for the interior, an
outstanding material because of its high stability, optimum hygienic features and corrosion resistance
against many (not all!) chemical combinations (Attention e.g. at chlorine combinations!).
The load has to be tested for its chemical compatibility with the materials mentioned above.
A material-compatibility table covering all these materials can be requested from MEMMERT.
WARNING! Always pull out the supply plug before
opening the bath cover!
2.2 Electrical equipment
• Operating voltage see rating label 50/60 Hz, WPE 45: 50Hz
• Protection Class 1, i.e. operating isolation with ground connection to EN 61 010
• Protection IP20 to DIN EN 60 529
• Interference suppression to EN55011 Class B
• Bath protected by a fuse 250V/15A fast blow
• Controller protected by a 80 mA fuse (200 mA on 115 V)
• When connecting a MEMMERT bath to the electrical supply you have to observe any local
regulations which apply (e.g. in Germany DIN VDE 0100 with FI protection circuit)
2.3 Note on EMC ( electromagnetic compatibility)
This product is intended to operate on a supply network with a system impedance Z
max
at the transfer point
(building connection) of 0.292 Ohm max. The user has to ensure that the product is only operated on an
electrical supply network which meets these requirements. If necessary, details of the system impedance
can be obtained from the local electricity supply authority.
Note:
Any work which involves opening up the bath must only be carried out
by a properly qualified electrician!
2.4 Brief technical description
MEMMERT-water and oilbaths are electrically heated and electronically controlled.
The temperature of the thermostating liquid is continuously controlled by a microprocessor-controller
with pulse package control. Electronic microprocessor-PID-controller with continuous power matching
and autodiagnostic system with fault indicator (see section 12), integral timer for digital programme time
selection.
The temperature is measured using a Pt100 temperature sensor (4-wire circuit). The accuracy is as
follows:
WNE ONE
Setting accuracy 0,1ºC 0,1ºC
Temperature fluctuation ±0,1ºC ±0,2ºC
The components of temperature control are controlled by integrated malfunction-recognition. The heaters
are installed outside - therefore no problems through dirt or limeresidue.
EXCELLENTpage 7
2.5 Standard equipment
• Electronic fuzzy-supported PID process controller with delayed programme start and programmable
hold time. The controller has permanent power matchinig and an autodiagnostic system for rapid
fault finding
• Recessing push/turn control for simple operation of bath
• Visual alarm indication
• Mechanical temperature limiter (TB Class 1)
• Monitor relay to switch off heating in case of fault
• Boiling mode for temperatures above 95°C
• Setpoint-dependent waiting time
• Digital overtemperature monitor (on waterbaths choice between TWB Class 2 or TWW Class 3.1,
on oilbaths TWB Class 2)
• Additional digital display of monitoring temperature
• Two separate, stainless-steel Pt100 temperature sensors (Mat.Ref. 1.4571) Class A in 4-wire circuit
for control and monitoring
• Built-in sounder as alarm on overlimit, as audible signal at programme end, and to acknowledge
input (key click)
• Warning at low liquid level
• Convenient calibration directly on the controller at one freely selected temperature
• Manually switched circulating pump, also pump switch-off at programme end (WPE 45 only)
Special equipment (to be ordered separately as accessory): flat cover with concentric ring sets, gable cover
to drain condensate, cooling device, various racks for test tubes, bottles etc.
3 Installation
The unit must be placed on a horizontal, non-flammable surface which cannot tilt.
The vent openings in the left and back side must remain unobstructed. Minimum wall spacing on all sides
is 80 mm. The minimum spacing from the top of the bath to the next ceiling (rack, etc.) is 750 mm.
space for
air circula-
tion
space for
air circula-
tion
min.
750mm
min.
80mm
min.
80mm
EXCELLENT page 8
3.1 Initial start-up
When the bath is started up for the first time, it should be supervised continuously until steady conditions
have been reached.
3.2 Installation - waterbaths
Mains
connection
The mains connection cable must be placed away from any hot surface.
Filling
In order to garant the high quality of the stainless steel it is recommended by the
steel producer to fill the waterbath with deionised water.
Draining The tank can be drained through the drain valve. The thermostating fluid must be cooled
to room temperature before draining. Drain the fluid either directly into an appropriate
container or connect an appropriate hose to the drain valve.
Operation with non-flammable thermostating liquids only!
drain valve
IMPORTANT! The water level in the bath must be between the
two markings at the right side of the tub!
Waterbaths can be fitted with a
level control system (see section 9).
NOTE: Polluted fluids may not be drained directly into the public
wastewater system. If the thermostating fluid is polluted, please
make sure that it will be properly filtered or dumped according to the
applicable regulations.
max water level
min water level
EXCELLENTpage 9
3.3 Installation - oilbaths
Mains
connection
The mains connection cable must be placed away from any hot surface.
Filling
IMPORTANT! The liquid level in the bath must be between the two
markings at the right side of the tub! The spacing between top edge
of oilbath and liquid level must be at least 30 mm as the oil expands
strongly on heating.
Draining The tank can be drained through the drain valve. The thermostating fluid must be cooled
to room temperature before draining. Drain the fluid either directly into an appropriate
container or connect an appropriate hose to the drain valve.
For safety reasons the flash point of the oil must be at 300ºC or higher.
The manufacturer of the oil may also have special regulations for oil-
changing intervals due to pollution oraging of the oil which have to be
observed.
In case of fire never extinguish with water.
Use a suitable damping-down medium (e.g. fire blanket)!
An overheated bath must never be refilled or topped up!!
Warning - bath hot when operating
drain valve
NOTE: Polluted fluids and oils may not be drained into the
public wastewater system. Please make sure, that the oil will be
properlydumped according to the applicable regulations.
max water level
min water level
Loading...