Memmert ONE 7 - 45 User Manual

Operating instructiOns

Waterbath

WNE 7 - 45
WPE 45

Oilbath

ONE 7 - 45

EXCELLENT page 2

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

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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.

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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)

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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

at the transfer point

max

(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.

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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

min.

750mm

space for

air circula-

tion

min.

80mm

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

min.

80mm

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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

Filling

The mains connection cable must be placed away from any hot surface.

max water level
min water level

drain valve

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.

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).

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.

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.

Operation with non-flammable thermostating liquids only!

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3.3 Installation - oilbaths

Mains
connection

Filling

The mains connection cable must be placed away from any hot surface.

max water level
min water level

drain valve

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.

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.

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

EXCELLENTpage 9

4 Bath construction and operation

7

relatively largest heat loss (since

furthest away from the heated ribs)

minimum heat loss (since

very close to the heated ribs)

bath

Insulation

heating elements

The heating positioned on three sides around the tank ensures a natural water circulation of the liquid
inside, thus securing an optimal uniform temperature distribution.

4.1 Controls and indications

time-symbol

delay-symbol

(delayed switch-on)

hold-symbol

(hold time)

alarm-symbol

SET key

7 5. 0

7. 0

monitor temperature

indication

temperature display

heater-symbol

level-symbol

pump-symbol

push/turn
control

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4.2 Switching on

The bath is switched on by pressing the push/turn control

and can be operated in connection with the
SET-key.

Bath switched off: The push/turn control is
pushed in and protected against damage.

4.3 Setting the parameters

A parameter can be selected by rotating the push/turn control; all other parameters are then dimmed.
The selected parameter flashes brightly and can now be altered with the push/turn control while holding
down the SET key (protection against unintentional alteration).
If the push/turn control is rotated quickly the setpoint is altered in large steps; with slow operation it is
altered in single steps.
After the SET key has been released the newly set value is stored.
Further rotation of the push/turn control selects the next parameter.

Rotation of the push/turn control selects the following parameters (in the order indicated), to be altered
as described above:

1. Temperature setpoint

2. Delayed switch-on

3. Hold time of the setpoint temperature

4. Setpoint-dependent waiting time

5. Circulating pump (WPE 45 only)

6. Temperature monitor

EXCELLENTpage 11

4.3.1 Temperature setpoint

*

*

90°C

Adjustment range:
waterbaths: 10°C to 95°C or ca. 100°C with
activation of the boiling mode
oilbaths: 10°C to 200°C

The bath starts to heat up immediately

to the set temperature.

Setting and indication accuracy:
water-/oilbaths: 0.1°C

Rotate the push/turn control until the °C symbol flashes.

The setpoint temperature can then be selected with the SET key depressed, as
described in Section 4.3. After releasing the SET key the display briefly flashes the
setpoint. The display then changes to the actual temperature and the controller
starts to control to the selected setpoint temperature.

During heating the symbol flashes in proportion to the actual heater power.

Waterbaths only:

In order to reach water temperatures above 95°C (boiling point), waterbaths are
provided with the boiling mode. If this is selected, the heating is switched on
permanently.

Activating the boiling mode by rotating the push/turn control beyond the
maximum value until the display shows CCC

The setting “boiling mode“ is not stored permanently. After the bath is switched
off and on again, the controller shows again the previously selected setpoint..

°C

°C

4.3.2 Delayed switch-on
Adjustment range:

90°C

1 min bis 999 hrs

Setting accuracy:
<100 hrs: 1 min

delay 12h

The bath starts to heat up to the previously

selected temperature only after the time of

the switch-on delay has elapsed.

≥100 hrs: 1 hr

Indication accuracy:
<10 hrs: 1 min
≥10 hrs: 1 hr

Rotate the push/turn control until the (delay) and the symbol flashes.

The duration of the delayed switch-on can then be set with the SET key depressed
as described in Section 4.3. After the SET key has been released the bath briefly
flashes the setting of the switch-on delay.

The switch-on delay is then activated and the display alternates between the
actual temperature and the running time of the switch-on delay. The time is
shown with a negative sign and runs down. In this way it is possible to determine
at any time how much longer the bath waits until it begins to heat up.

If no delayed switch-on is required, it can be de-activated by the setting OFF.

°C

°C

°C

EXCELLENT page 12

4.3.3 Hold time of the setpoint temperature

*

t

*

t

90°C

1 min bis 999 hrs

Setting accuracy:

Adjustment range:

hold 6h

<100 hrs: 1 min
≥100 hrs: 1 hr

The bath switches off the heating after

the end of the selected hold time. In this

case the hold time includes the heating-

Indication accuracy:
<10 hrs: 1 min
≥10 hrs: 1 hr

up time..

Rotate the push/turn control until the (hold) and the symbol flashes.

The duration of the hold time can then be selected with the SET key depressed,
as described in Section 4.3. After the SET key has been released the bath briefly
flashes the hold time setting.

If no hold time has been programmed, the hold time is activated immediately
and the display alternates between the actual temperature and the running time
of the hold time. As with switch-on delay, the residual time is shown with a
negative sign and runs down.

If no hold time is required, it can be de-activated by the setting OFF.

°C

°C

°C

4.3.4 Setpoint-dependent waiting time

90°C

hold 6h

The bath switches off the heating after the selected

hold time has elapsed. The hold time begins only

when the setpoint temperature has been reached.

Rotate the push/turn control until flashes.

With the SET key depressed, the setpoint-dependent waiting time can be activated
or de-activated.

Setting:
ON or OFF

°C

°C

EXCELLENTpage 13

4.3.5 Circulating pump (WPE 45 only)

apertures to

circulating pump

pipe

circulating pump

waterbath WPE 45

(view from above)

Operation of a circulating pump can improve the temperature distribution inside the waterbath. The pump
draws water from the centre of the bath and distributes it through the pipes in the front and back of the
bath. The continuous water circulation avoids larger temperature differences. At a water temperature of
e.g. 90°C the temperature difference in the entire bath is less than 0.36°C.

Note:
If the boiling mode CCC has been activated, circulating pump operation is not possible!

Setting:

ON or OFF

Rotate the push/turn control until the symbol flashes.

With the SET key depressed the circulating pump can then be switched on and
off.

°C

EXCELLENT page 14

4.3.6 Temperature monitor

t

monitor temperature
setpoint temperature

*

Adjustment range:
up to 10°C above nominal temperature

Setting and indication accuracy:
<100°C: 0.1°C
≥100°C: 1°C

(see also sections 4.3.8.2 and 7)

Rotate the push/turn control until the monitor temperature display flashes.

The monitor temperature can then be adjusted with the SET key depressed, as
described in section 4.3. While the SET key is depressed, the top display shows
for information the previously selected setpoint temperature.

It is important to ensure that the monitor temperature is always set sufficiently
high above the maximum working temperature.

4.3.7 Level monitor

When the liquid level has fallen so far that the upper of the two Pt100 temperature
sensors is above the bath liquid, the different temperatures inside and outside the
bath liquid cause the symbol to flash, the sounder operates, and the heating
is switched off for safety reasons.

°C

On topping up the liquid, ensure that the liquid level is between the two level
marks on the right inside the bath. (see also Sections 3.2 and 3.3)

The bath is again ready for operation after switching it off and on or after pressing
the SET key.

4.3.8 Setup menu

The setup menu provides additionally for a single-point calibration and the choice
of temperature monitor.

To get to the setup menu the SET key has to be depressed while the bath is
switched on.

After switching on, the display shows the version of the controller software.

°C

°C

EXCELLENTpage 15

4.3.8.1 Calibration

[°C]

Customer calibration of the bath on the controller using a self-selected calibration temperature. A positive
or negative calibration difference against it can be set.

General calibration instructions:

1. Set the required calibration temperature and set the calibration difference to 0.0°C

(see below “set calibration temperature“ and “set calibration difference“).

2. Measure the deviation from the selected calibration temperature under steady conditions, using a

reference instrument.

3. Set the calibration difference. If the measured reference temperature is lower than the indicated

value, the calibration difference has to be set with a negative sign.

4. Carry out a check measurement using the reference meter.

Example: Temperature difference between controller display (e.g. 70.0°C) and bath liquid (e.g. 69,0°C) has
to be corrected.

1. Set calibration temperature to 70.0°C and set calibration difference to 0.0°C.

2. Using a calibrated reference instrument, the measured temperature is 69.0°C at a setpoint

temperature of 70.0°C.

3. Set calibration difference to –1.0°C.

4. After the bath has settled down the reference instrument should read 70.0°C.

corrected temperature

calibration

difference -1°C

0 100 50

measurement

factory temperature

measurement

calibration

temperature

70°C

Adjustment range: calibration temperature:
waterbaths: 10°C to 95°C
oilbaths: 20°C to 200°C

Adjustment range: calibration difference:
water-/oilbaths: -5.0°C to 5.0°C

Set calibration temperature:

Rotate the push/turn control until flashes.

The calibration temperature can then be set with the SET key depressed as
described in section 4.3.

Set calibration difference:

Rotate the push/turn control until flashes.

The calibration difference can then be set with the SET key depressed as described
in section 4.3.

°C

°C

°C

°C

Note:
Setting the calibration difference to 0.0°C restores the factory calibration!

EXCELLENT page 16

4.3.8.2 Selection of temperature monitor (waterbaths only)

t

Class 2 Class 3.1

monitor temperature
setpoint temperature

t

*

monitor temperature

setpoint temperature

*

Rotate the push/turn control until flashes.

With the SET key depressed it is possibile to select the temperature monitor as
adjustable temperature limiter (TWB) Protection Class 2 to DIN 12880, or as
adjustable temperature monitor (TWW) Protection Class 3.1 (see also sections

4.3.6 and 7)

5 Programming example of a programme sequence

1. Setpoint temperature setting

Rotate the push/turn control until the °C symbol flashes. With the SET key
depressed, use the push/turn control to set the temperature setpoint to f.ex.

90.0°C

2. Delayed switch-on setting

Rotate the push/turn control until the (delay) and the symbol flashes. With
the SET key depressed, use the push/turn control to set the time f.ex. 6.00.

Setting:
2 or 3.1

°C

°C

°C

°C

3. Hold time setting

Rotate the push/turn control until the (hold) and the symbol flashes. With
the SET key depressed, use the push/turn control to set the time f.ex. 4.00.

4. Setpoint-dependent waiting time setting

Rotate the push/turn control until flashes. With the SET key depressed, use
the push/turn control to set on.

5. Switch on the circulating pump (WPE 45 only)

Rotate the push/turn control until the symbol flashes. With the SET key
depressed, use the push/turn control to set on.

6. Monitor temperature setting

Rotate the push/turn control until the monitor temperature display flashes. With
the SET key depressed, use the push/turn control to set the monitor temperature
to f.ex. 91.5°C.

°C

°C

°C

°C

°C

°C

EXCELLENTpage 17

6 Monitoring the programme sequence

*

t

*

t

*

t

*

t

90°C

delay 6h

hold 4h

Bath does not heat up

90°C

delay 6h

hold 4h

Bath heats up to setpoint
temperature

90°C

delay 6h

hold 4h

Bath holds setpoint
temperature

During the delayed switch-on the

symbol
flashes and the display alternates between
residual time and actual temperature

SP activated:

After the end of the delayed switch-on the
symbol goes dark and the bath heats up to
the selected setpoint temperature. The display
alternates between actual temperature and
SP until the setpoint temperature is reached.
Heating is indicated by the symbol.

SP is de-activated or after the setpoint
temperature has been reached:

During the hold time the symbol flashes
and the display alternates between the residual
time and the actual temperature.

°C

°C

°C

°C

°C

°C

90°C

delay 6h

hold 4h

Heating is switched off

After the hold time has elapsed the

symbol
goes dark, the heating is switched off, and
the display alternates between the actual
temperature and END.

°C

°C

EXCELLENT page 18

7 Temperature monitor and protection devices

The monitor temperature is measured with a separate Pt100 temperature sensor inside the chamber. The
monitor unit provides protection for the bath load as well as protection for bath and its surroundings.

The bath is provided with duplicate overtemperature protection (mechanical / electronic) according to DIN

12880.

7.1 Mechanical temperature monitor: temperature limiter

All water- and oilbaths are fitted with a mechanical temperature limiter (TB) Protection Class 1 to DIN

12880.
If the electronic monitor system should fail during operation and the fixed factory-set maximum temperature
is exceeded by approx. 30°C the temperature limiter switches off the heating permanently as a final
protective measure. The

In addition to its function as overtemperature protection the TB also operates as low-level protection, i.e.
the heating is switched off permanently if the liquid drops below a certain level.

Fault rectification after the TB cut-out has been activated:

1. Switch off the bath and allow it to cool down

2. Rectify the fault (e.g. top up the liquid, replace temperature probe) and where appropriate contact
customer service

3. The bath is again ready for operation only after it has cooled down and after the fault has been
rectified

symbol lights up continuously as fault indication.

7.2 Electronic temperature monitor

Monitor temperature
Adjustment range: up to 10°C max
above nominal temperature (for
nominal temperature see rating
label)

Using the push/turn control select the

°C

monitor temperature.
With the SET key depressed, use the push/turn
control to set the monitor temperature.

Note:
The monitor temperature must always be set sufficiently high above the maximum
working temperature.

The manually selected monitor temperature of the electronic overtemperature protection is monitored in
the case of waterbaths either by an adjustable temperature monitor (TWW) Protection Class 3.1 to DIN
12880 or by an adjustable temperature limiter (TWB) Protection Class 2 to DIN 12880, and in oilbaths by
an adjustable temperature limiter (TWB).
On waterbaths the temperature monitor can be selected in the setup menu (see section 4.3.8 or 4.3.8.2).
For details of temperature monitor and protection class see rating label.

EXCELLENTpage 19

7.2.1 Adjustable temperature monitor ( TWW) Protection Class 3.1 to DIN 12880

If the manually set monitor temperatur is exceeded, the TWW takes over the control of the temperature
and starts to control at the monitor temperature. The symbol flashes as warning.

7.2.2 Adjustable temperature limiter ( TWB) Protection Class 2 to DIN 12880

If the manually set monitor temperature is exceeded, the TWB switches off the heating permanently and
can only be reset by pressing the SET key. The

symbol flashes as warning.

7.3 Monitor relay

In addition the bath is equipped with an electronic monitor relay.
If a fault occurs during operation or if the selected setpoint temperature is exceeded by 10°C, then the
monitor relay continues control of the heating at this temperature in emergency operation.The

symbol

flashes as warning.

Fault rectification after the monitor relay may been activated:
Check the controller for error messages (see section 12) and where appropriate contact customer service.

Example:
With a setpoint temperature of 80°C, if a fault occurs in the power unit (faulty triac) the bath continues to
operate in emergency operation at approx. 90°C.

EXCELLENT page 20

8 Use of the cover (special equipment)

Gable cover The gable cover (may be ordered as already mounted special equipment) should always

be closed in order to prevent evaporation of thermostating liquid and to obtain optimal
temperature distribution. The gable shape of the cover makes sure that condensed water
will not drop down into the loads.

Flat cover For positioning of test flasks on top of the bath, a flat cover (special equipment) may be

used. The size of the holes in this cover can be adapted to the flasks with ring inserts. The
rings may therefore only be inserted or taken off, if the bath is cooled down.

Note that during operation the flat cover and the gable cover heat up

to the temperature of the thermofluid!

9 Level control (special equipment)

2 different filling levels can be maintained constant if the unit is fitted with a level control system. When
using water as thermostating liquid, connect the feed pipe with tubing to the mains water supply. The
drain must be connected with tubing to an appropriate container or sink.
Make sure, that the tubing cannot be clogged or bended, and that it continually runs downhill.

Please note, that the outflowing water may be hot!

Supply and drain are indentified by arrows. Use temperature
resistant material for the tubing.

If the second overflow is not required, it must be closed with a
sealing cap.

The evaporation loss can be compensated through a slightly
open water supply (dripping) and can be monitored through
the “observation window“.

The level control system cannot be retrofitted!

observation
window

supply
drain
drain

Warning – bath hot when operating

EXCELLENTpage 21

10 Cooling system (special equipment)

If the waterbath is fitted with a cooling device
for quicker cooling of the bath liquid, the “water
supply“ has to be connected by a hose f.ex. to a
cold water supply line. The “discharge“ has to
be lead into a drain.

(Use temperature resistant material for the
tubing)

discharge

water supply

Please note, that the outflowing water may be hot!

The discharge must be connected with tubing to an appropriate container or sink. Make sure, that the
tubing cannot be clogged or bended, and that it continually runs downhill.

11 Cleaning and maintenance

By regular cleaning of the easy to clean the tank, residues are

avoided which at continuous influence can impair the outfit and

function of the water-/oilbath.

Please use only detergents and antiliming agents appropriate for

stainless steel for the cleaning of the tank and the housing (stainless

steel detergents usual in the trade)!

Water baths only:

After cleaning and after draining the water the

stainless steel tank must be rinsed thoroughly with clear water

and dried carefully!

It is important to ensure that no rusting objects come into contact with the stainless steel bath tank or the
stainless steel housing. Rust sediments lead to contamination.

If rust stains caused by contamination occur on the tank surface, the affected areas must be cleaned and
polished immediately.

On units with gable cover we recommend that the hinge bolts are oiled from time to time if the bath is
used frequently.

EXCELLENT page 22

12 Check list for fault rectification

Main switch ON,
no indication on the display

Main fuse 15A or instrument fuse T80mA 250V~ on circuit board

55167.x has blown
Controller faulty
Electrical supply interrupted

symbol not alight

Ambient temperature too high

Temperature in bath above the selected setpoint temperaturer
symbol alight
symbol flashes

Temperature protection (TB) has operated

Temperature protection (TWW/TWB) has operated

Monitoring relay has operated

symbol flashes

C O N F

E - 1

E - 2

E - 3

E - L

Liquid level too low

Error on self test

Power module triac faulty

Power module faulty

Pt100-temperature probe faulty

Communication to power unit interrupted

In case of a malfunction contact an authorized service station for Memmert equipment or please inform
the Memmert service department (see section 16).

In case of queries always specify model and serial number (on the rating label)

13 Action on supply failure

After a failure of the supply, operation continues with the previously set parameters.

14 Glossary

• nominal temperature = the maximum adjustable setpoint temperature of the bath.

•

• ambient temperature = the continuous temperature of the room in which the bath is set up

• setpoint temperature dependent on operation = the integrated digital timer for the hold time
starts no earlier than the temperature in the bath has reached the setpoint to least 0.5°C at
95°C nominal temperature resp. 2°C at 200°C nominal temperature.

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15 CE Conformity of Declaration

EC Declaration of Conformity

Manufacturer´s name and address: MEMMERT GmbH + Co. KG

Product: Waterbath / Oilbath
Type: WNE … / ONE … / WPE 45
Sizes: 7 / 10 / 14 / 22 / 29 / 45
Nominal voltage: AC 230 V 50/60 Hz

The designated product is in conformity with the European EMC-Directive

Äußere Rittersbacher Straße 38
D-91126 Schwabach

alternative AC 115 V 50/60 Hz

2004/108/EEC

including amendments

Council Directive of 03 May 1989 on the approximation of the laws of the Member States relating to

electromagnetic compatibility.

Full compliance with the standards listed below proves the conformity of the designated product with the essential
protection requirements of the above-mentioned EC Directive:

DIN EN 61326:2004-05 EN 61326:1997

The designated product is in conformity with the European Low Voltage Directive

EN 61326/A1:1998
EN 61326/A2:2001
EN 61326/A2:2003

2006/95/EEC

including amendments

Council Directive on the approximation of the laws of the Member States relating to Electrical

equipment for use within certain voltage limits.

Full compliance with the standards listed below proves the conformity of the designated product with the essential
protection requirements of the above-mentioned EC Directive:

DIN EN 61 010-1 (VDE 0411 part 1):2002-08 EN 61 010-1:2001
DIN EN 61 010-2-010 (VDE 0411 part 2-010):2004-06 EN 61 010-2-010:2003

Schwabach, 03.07.08

______________________________

(Legally binding signature of the issuer)

This declaration certifies compliance with the above mentioned directives but does not include a property assurance. The
safety note given in the product documentation which are part of the supply, must be observed.

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Standard units are safety-approved and bear the test marks:

This product is subject to the Directive 2002/96/EC by the European Parliament
and the EU Council of Ministers which concerns Waste Electrical and Electronic
Equipment (WEEE). This product has been put on the market after 13 August
2005 in countries which have already incorporated this Directive into National
Law. It should not be disposed off as part of domestic refuse. For disposal
please contact your dealer or the manufacturer. Products which are infected,
infectious or contaminated with health-endangering substances are excluded
from return. Please note also all further regulations in this context.

16 Address and customer service

MEMMERT GmbH+Co.KG
PO Box 17 20
91107 Schwabach
Germany
Phone: [phone] / 925-0
Fax:: [phone]
E-mail: [e-mail]
Internet: www.memmert.com

Customer service:
Phone: [phone] / 925-143
or 00 49 9122 / 925-126
E-mail: [e-mail]

In case of queries always specify model and serial number (on the rating label)

© by MEMMERT GmbH+Co.KG

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17 Index

A

address 25
alarm symbol 19, 20
ambient conditions 5
ambient temperature 23
autodiagnostic system 6

B

bath construction 10
boiling mode 5
boiling mode, activate 12
brief technical description 6

C

CAL 16
calibration difference 16
calibration of the temperature 16
calibration temperature 16
CE conformity of declaration 24
check list for fault rectification 23
chemical compatibility 6
circulating pump 14
cleaning 22
controls 10
cooling system 22
cover, flat 21
cover, gable 21, 22
customer service 25

D

deionised water 8
delayed switch-on 12
DIFF 16
DIN 12880 19, 20
disposal 25
draining - oilbaths 9
draining - waterbaths 8
drain hose 21, 22
drain valve 8, 9

E

electrical equipment 6
electromagnetic compatibility 6
evaporation loss 21

F

fault rectification 23
filling - oilbaths 9
filling - waterbaths 8
flash point of the oil 9

G

glossary 23

H

heating 10
hinge bolts 22
hold time of the setpoint temperature 13

I

indication 10
initial start-up 8
installation 7
installation - oilbaths 9
installation - waterbaths 8

L

level control system 8, 21
level monitor 15
liquid level - oilbaths 9
liquid level - waterbaths 8
low-level protection 19

M

maintenance 22
Mat.Ref. 1.4301 6
material quality 6
monitor relay 20
monitor temperature, selection 15
monitor unit 19

N

nominal temperature 5, 23

P

parameter settings 11
polluted fluids 8, 9
programme sequence monitoring 18
programming example 17
Protection Class 1 19
Protection Class 2 20
Protection Class 3.1 20
Pt100 temperature sensor 6

R

rust deposits 22

S

SAFE 17
safety notes 4
setpoint-dependent waiting time 13
setpoint dependent operation 23
setpoint temperature 23
setpoint temperature, selection 12
Setup menu 15
SP 13, 18
standard equipment 7
supply failure 23
switching on the bath 11

T

TB 19
technical data 5
temperature diviation 16
temperature fluctuation 6
temperature limiter (TB) 19
temperature limiter (TWB) 20
temperature measurement 6
temperature monitor 15, 19
temperature monitor, selection 17
temperature monitor (TWW) 20
temperature setpoint 23
temperature setpoint, selection 12
thermostating liquid 6, 21
thermostating liquid - oilbaths 9
thermostating liquid - waterbaths 8
transport 4
TWB 20
TWW 20

U

uniform temperature distribution 10

W

water circulation 10
working temperature range 5

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EXCELLENTpage 27

Memmert gmbH + co. Kg | Postfach 1720 | D-91107 Schwabach | Tel. [phone] / 925 - 0 | Fax [phone] / 145 85 | E-Mail: [e-mail] | www.memmert.com

24.04.2009

Water-/Oilbath EXCELLENT englisch

D10333