Memmert PM 200, PM 400, PM 500 User Manual

OPERATING INSTRUCTIONS

Vacuum Drying Oven

VO 200
VO 400
VO 500

Pump Module

PM 200
PM 400
PM 500

1. Contents ......................................................................................................................................................................2

2 General notes and safety notes ....................................................................................................................................4

2.1 Safety check.......................................................................................................................................................4

2.2 Transport ...........................................................................................................................................................4

3 Installation facilities (accessories) ..................................................................................................................................5

3.1 Subframe ...........................................................................................................................................................5

3.2 Initial start-up ....................................................................................................................................................6

3.3 Oven load .......................................................................................................................................................... 6

4 Technical data ..............................................................................................................................................................7

4.1 Standard equipment of VO ovens (basic variation) .............................................................................................. 8

4.2 Electrical equipment ..........................................................................................................................................9

4.3 External connection ........................................................................................................................................... 9

4.4 Material quality from MEMMERT: ....................................................................................................................... 9

5 Oven construction and connections ............................................................................................................................10

6 Starting up ................................................................................................................................................................12

7 Switching output for external vacuum pump purge valve and pump control (option) .................................................. 13

7.1 Vacuum pump purge valve .............................................................................................................................. 13

7.2 Demand-controlled vacuum pump shut-down (option) ....................................................................................13

8 Loading and Inertgas ................................................................................................................................................. 14

9 Guidelines for evaporating liquids in Memmert-vacuum ovens .................................................................................... 15

10 Controls and indications .............................................................................................................................................16

11 Operating the door .................................................................................................................................................... 16

12 Switching on ............................................................................................................................................................. 16

13 Setting the temperature ............................................................................................................................................. 16

14 Quick venting function ............................................................................................................................................... 17

15 Status indication for the heating levels ....................................................................................................................... 17

16 Selecting the operating mode .................................................................................................................................... 18

17 Setting the parameters ............................................................................................................................................... 18

18 Normal operation

............................................................................................................................................19

Setting example “Normal operation“ ..........................................................................................................................20

19 Weekly programmer

........................................................................................................................................21

Programming example “Weekly programmer“ ............................................................................................................ 22

20 Programme operation

......................................................................................................................................23

20.1 Closure commands for ramp segments ............................................................................................................25

Setting-up example “Programme operation” .............................................................................................................. 26

PRINT

21 Printer
22 Basic oven settings

.............................................................................................................................................................29

SETUP

...........................................................................................................................................30

22.1 Real-time clock ................................................................................................................................................31

23 Temperature monitor and protection devices ..............................................................................................................32

23.1 Mechanical temperature monitor: temperature limiter (TB) ...............................................................................32

23.2 Electronic temperature monitor ........................................................................................................................ 33

MAX

23.2.1 Overtemperature protection

23.2.2 Undertemperature protection

................................................................................................................. 33

MIN

.............................................................................................................. 33

23.2.3 Adjustable temperature monitor (TWW) Protection Class 3.1 to DIN 12 880 ................................................... 34

23.2.4 Automatic temperature monitor (ASF)

AUTO

............................................................................................. 35

1. Contents

VO page 2

24 Calibration .................................................................................................................................................................38

24.1 Calibration-temperature ...................................................................................................................................38

24.2 Calibration-pressure (vacuum) .......................................................................................................................... 40

25 Communication interface for the PC ........................................................................................................................... 41

25.1 USB interface

..................................................................................................................................................................................41

25.2 Communication interface RS232C (option) .......................................................................................................42

25.3 Bus interface RS485 (option) ............................................................................................................................43

26 Log memory ..............................................................................................................................................................44

26.1 Reading the log memory .................................................................................................................................. 44

26.2 Reading the log memory into the PC via RS232C .............................................................................................. 44

26.3 Printing the log memory from the oven ............................................................................................................ 44

(only for oven models with printer ports) .................................................................................................................... 44

27 Memory card: MEMoryCard XL...................................................................................................................................45

27.1 Programming the MEMoryCard XL from the oven ............................................................................................ 45

27.2 Programming the MEMoryCard XL from a PC with the oven .............................................................................45

27.3 Programming the MEMoryCard XL from a PC using the read-write unit ............................................................ 45

27.4 Documentation on MEMoryCard XL .................................................................................................................46

28 User-ID-Card (available as optional extra) ....................................................................................................................47

29 Cleaning ....................................................................................................................................................................48

30 Maintenance ..............................................................................................................................................................48

31 Door seal ................................................................................................................................................................... 49

32 Error messages ........................................................................................................................................................... 50

33 Supply failure ............................................................................................................................................................. 50

34 CE Conformity Declaration ......................................................................................................................................... 51

35 Address and customer service ....................................................................................................................................52

36 Index .........................................................................................................................................................................53

page 3

VO

2 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.

This mark in the Operating Instructions means:

Watch out

Important Note!

This mark on the product means:

Note Operating Instructions

Warning – oven hot when operating!

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!

The right to technical modifications is reserved.
Dimensional details are not binding.

2.1 Safety check
The door and the security glass panels must be checked regularly for scratches or damage. No vacuum
must be applied to the oven if there is any damage.

2.2 Transport
Always use gloves!
If the oven has to be carried, at least 2 persons are required to transport it.

Do not place the oven on a readily inflammable support surface!

It is important that the oven is set up accurately horizontally!

VO page 4

3 Installation facilities (accessories)

min.

20 cm

The oven can be placed on the floor or on a
bench (working surface). It is important that
the oven is set up accurately horizontally; the
door may have to be adjusted (see Section:

„Maintenance“)

8 cm

min.

8 cm

min.

15 cm

min.

The spacing from the back of the oven to the
wall should be at least 15 cm. The spacing to
the ceiling must not be less than 20 cm and
that at the side to the wall not less than 8 cm.
Generally it is essential to have adequate air
ventilation around the oven.

Information on accessories will be found in our leaflet or on our internet page www.memmert.com.
Please note the installation instructions for our accessories.

3.1 Subframe
Oven models 200 to 500 can be mounted on a subframe (accessory)

Oven on the

floor

Oven on

subframe

page 5

Oven on pump

module

Oven on pump

module and

subframe

VO

3.2 Initial start-up
When the oven is started up for the first time, it should be supervised continuously until steady conditions
have been reached.

3.3 Oven load
Full consideration must be given to the physical and chemical properties of your load (e.g. combustion
temperature etc.) in order to prevent serious damage to load, oven and surroundings.
Please note that the MEMMERT ovens described here are not explosionproof (they do not conform to the
Industrial Association Specification VBG 24) and are therefore not suitable for drying, evaporating and
burning-in of paints, enamels or similar materials whose solvents may produce an inflammable mixture
with air. There must be no possibility of the formation of inflammable gas/air mixtures either within the
oven chamber or in the immediate surroundings of the equipment.
Large amounts of dust or corrosive fumes inside the oven chamber or in the surroundings of the equipment
may produce deposits within the oven and lead to short-circuits or damage the electronics. It is therefore
important that adequate precautions are taken against excessive dust or corrosive fumes.

In order to ensure proper air circulation inside the chamber, there must be sufficient spacing of the load
inside the oven. Do not place any load on the floor, against the side walls or underneath the ceiling of the
chamber (heating ribs). In order to ensure optimum air circulation the shelves must be so inserted that the
air spacings between door, shelf and rear chamber wall are approximately equal.

The maximum number and the loading of the shelves can be found in the table in the Section „Technical Data“.

VO page 6

4 Technical data

Model 200 400 500
Chamber width A [mm] 385 385 545
Chamber height B [mm] 305 385 465
Chamber depth C [mm] 250 330 400
Oven width D [mm] 550 550 710
Oven height E [mm] 600 680 760
Oven depth F [mm] 400 480 550
Width G [mm] 529 529 689
Height H [mm] 450 290 130
Depth I [mm] 383 463 533
Chamber volume [litre] 29 49 101
Weight [kg] 58 82 120
Power [W] 1200 2000 2400
Max. number of shelves 3 4 4
Max. load per shelf [kg] 20 20 20
Max. load per oven [kg] 40 60 60
Ambient conditions Ambient temperature 5°C to 40°C

rH 80% max., no condensation
Overvoltage category: II
Contamination level: 2

Setpoint temperature range 20°C to 200°C

10mbar - 1100mbar
Setting accuracy 0.5°C / 1mbar
Working temperature range From 5°C above ambient temperature up to 200°C
Leakage rate max. 0.5 x 10

page 7

-2

mbar 1/sec

VO

4.1 Standard equipment of VO ovens (basic variation)

• Electronic fuzzy-supported PID process controller with permanent power matching and time-saving
auto-diagnostic system for rapid fault finding (see section: “Error messages”)

• Language selection

• Alphanumeric text display

• Internal log memory with 1024 kB for storing actual temperature, temperature setpoint, vacuum and
error states with time stamp

• Control of oven and logging of actual temperature values on MEMoryCard XL

• Programme sequence control for up to 40 ramp segments

• Vacuum pressure control for digital operation of the built-in solenoid valves

• Programmable inlet valves for fresh air and inert gas

• Integrated weekly programmer with group function (e.g. all workdays)

• Recessing push/turn control for simple operation of the oven

• Visual alarm indication

• Built-in sounder as alarm if limit values are crossed, as acoustic signal at programme end and to
acknowledge input (key click)

• Digital monitor controller for overtemperature, undertemperature and automatic setpoint-following
monitor (ASF)

• Mechanical temperature limiter (TB protection class 1)

• Monitor relay to switch off heating in case of fault

• Each thermoshelf has a separate Pt100 DIN class A temperature sensor for temperature measurement
and can be removed individually

• Convenient integral 3-point temperature and vacuum calibration

• Temperature-dependent control unit ventilation

• USB interface for computer-based temperature control programmes and to read out the controller’s
internal log memory

• MEMMERT software “Celsius” for remote operation of the oven via computer and for reading the
controller’s internal log memory

• A pre-formatted blank MEMoryCard XL with 32 kByte storage capacity, reprogrammable for up to 40
ramp segments and additionally 270 hours log memory with a scanning interval of one minute

Optionally available additional fittings:

• 24 volt control output for purging and switching off external vacuum pump

• Number of flange sockets (inserts) for thermoshelves: 3 instead of 2 (VO 200) or 4 instead of 2
(VO 400-500)

• Number of thermoshelves: 2 instead of 1 (VO 400-500)

• Connection of inert gas switchover via solenoid valve

• Interface for control of optional pump module

• Drip tray

• USB printer port

• Base

• Pump module

• USB cable

• External card reader for MEMoryCard XL for connection to USB interface

• Printer cable (parallel, shielded) 25-pin.

Descriptions in this manual referring to these optional additional fittings are only relevant for ovens of the
corresponding version.

VO page 8

WARNING! Always pull out the supply plug before

opening the oven cover!

4.2 Electrical equipment

• Operating voltage see label 50/60 Hz

• Current rating see label

• 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

• Oven protected by a fuse 250V/15A fast blow

• Controller protected by a 100 mA fuse (200 mA on 115 V)

• When connecting a MEMMERT oven to the electrical supply you have to observe any local

regulations which apply (e.g. in Germany DIN VDE 0100 with FI protection circuit)

This product is intended to operate on a supply network with a system impedance Zmax 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 involving opening up the oven must only be carried out by a suitably qualified
electrician!

4.3 External connection

Equipment connected to the external connections must have interfaces which meet the requirements for
safe low voltage (e.g. PC, printer).

4.4 Material quality from MEMMERT:

• External casing: stainless steel (Mat.Ref. 1.4016)

• Piping: stainless steel (Mat.Ref. 1.4571)

• Working space: stainless steel (Mat.Ref. 1.4404) featuring high stability, optimal hygienic properties,

and corrosion resistance against many (not all!) chemical compounds (warning against chlorine
compounds, for example).

• Thermoshelves: aluminium. The heating mat is vulcanised to the underside of the thermoshelf and

covered with stainless steel; it consists of Silicone rubber.

• Thermoshelves: stainless steel (Mat. Ref. 1.4404). The heating mat is vulcanised to the underside of

the thermoshelf and covered with stainless steel; it consists of Silicone rubber.

• Connector between thermoshelf and electrical socket in rear wall: Ryton R4 (GF PPS plastics)

and PEEK-GF30

• Seals in solenoid valves and electrical sockets: fluoride rubber FKM/FPM (Viton)

• Door seal: Silicone rubber

The load for the vacuum drying oven must be carefully evaluated for its chemical compatibility with the
above materials.
A table listing about the compatibility of all these materials can be requested from MEMMERT.

page 9

VO

5 Oven construction and connections

12

1

2

3

10

11

4

5

6

7

9

8

VO

page 10

15

13

14

16

1 Computer connection, serial communication

interface

2 Printer connection, parallel printer port

(optional)
3 Air/gas connection IN1
4 Air/gas connection IN2 (optional)
5 Vacuum connection OUT
6 Norprene connection tube vacuum pump -

vacuum appliance
7 Vacuum pump module connection
8 Control connection for pump purging
Vacuum pump (optional)
9 Mains connection pump module
10 Connecting line pump purging
11 Control connection pump purging
12 Mains connection vacuum unit
13 Flange socket
14 Thermoshelf
15 Main switch pump module
16 Vacuum pump

page 11

VO

6 Starting up

1. Connect the vacuum connection (5) to the vacuum pump connection (6) of the pump module or to
a suitable external vacuum pump, using the Neoprene connection tubing (7) supplied with the
pump module.

2. When using a pump module, the connections for the pump purge (8+11) must be linked
together using the cable (10) supplied with the equipment.

3. Plug in the mains supply plugs of the supply cables (9+12).

4. If the oven is to be charged with inert gas (e.g. nitrogen) the gas cylinder must be connected only
to the gas inlet IN2 (4). The maximum pressure of 1.5 bar must not be exceeded! (Use pressure
reducing valve for 1.5 bar max.)

5. Push in the thermoshelves (14) as far as possible. Any thermoshelves not being used should be
placed on a soft surface.

6. Close the door of the vacuum oven.

7. Switch on the main switch (15) of the optional pump module.

8. Switch on the main switch of the vacuum oven.

On first start-up do not operate

the oven unsupervised until

steady conditions have been reached!

Warning

VO page 12

7 Switching output for external vacuum pump purge valve and pump control (option)

The 3-way switched output serves to control the vacuum
pump of the optional pump module (PM) of the vacuum oven
(VO).

7.1 Vacuum pump purge valve
When loads with a high moisture content are being dried
there is a possibility during prolonged operation that the
pump output decreases through condensate forming in the
pump heads. The diaphragms can be blown free by briefly
purging the pump heads with fresh air. This improves the
effectiveness of the drying process.

2

1

3

Note:

In conjunction with the optionally available pump modules
PM 200, PM 400 and PM 500 this cyclic purge takes place
automatically as the pump performance deteriorates.

Decisive advantage:

The drying process takes place more rapidly and with reduced
energy consumption, the wear on the pump is reduced.
This function can be de-activated by removing the pump
purge connecting cable at the back of the unit.

Pin connections of the socket
on the back of the unit:

1 output purge valve

GND (switched)
2 24V DC
3 pump switch-off

GND (switched)

7.2 Demand-controlled vacuum pump shut-down (option)
After the end of a drying programme, or after prolonged operation with any vacuum demanded by the
controller, the vacuum pump incorporated in the pump module (PM) is switched off via the control line.

Note:

A control signal switches off the vacuum pump incorporated in the optional pump module (PM). The
signal lamp in the main switch of the pump module remains alight even when the vacuum pump has been
switched off via the control line.

Decisive advantage:

The demand-controlled shut down of the vacuum pump reduces energy consumption and increases the
life of the vacuum pump by reducing the wear on the pump diaphragms.
This function can be de-activated by removing the pump purge connecting cable at the back of the unit.
The vacuum pump is then running continuously.

page 13

VO

8 Loading and Inertgas

• The load must only be placed on the thermoshelves.

• Slide in the thermoshelves up to the stop.

• Do not dry or heat any load which releases fumes developing an inflammable mixture in
combination with air.

• Provide optimum heat transfer from the thermoshelf to the load. Ensure that the load rests properly
on the tray.

• For maximum number of trays and load capacity of the thermoshelves see the Table Technical data.

• The table below gives recommendations for the appropriate loading of the trays which in turn is
essential for a largely uniform temperature distribution inside the oven.

Safety note:

When the oven is being operated with inert gas (nitrogen, helium, neon, argon, krypton) there is a small
escape of the gas used into the environment.
The list of MAK values (maximum workplace concentration) and of BAT values (biological workplace
tolerance values) does not contain any information concerning the inert gases mentioned above.
It is however still important to ensure good ventilation of the room.
The appropriate specifications of the trade association publication „Guidelines for the Laboratory“ (ZH1/119)
as well as DIN 1946 Part 7 „Room Air Technology (VDI Ventilation Rules)“ should be observed.

Precautions when handling gas cylinders:

• Avoid any open fire in the area near the gas cylinders. Inert gas is not combustible, but it is

possible for the cylinder to burst.

• Store cylinders below 50°C in a well ventilated location. Prevent ingress of water and any return

flow into the cylinder.

• Connect up the gas cylinder only through a pressure reducing valve (1.5 bar max.).

• When not in use, close the shut-off valve.

• The instructions and safety information of the gas supplier have to be observed.

VO page 14

9 Guidelines for evaporating liquids in Memmert-vacuum ovens

• Do not heat liquids in closed vessels.

• In order to prevent condensation in the working space, heat liquids using a drying programme

(with venting cycles).

• In order to prevent excessive condensation in the working space, working temperature and venting

cycles should be chosen to suit the moisture content of the load.

• Do not heat any liquids releasing fumes which form an inflammable mixture with air.

• During the evaporation of liquids with a large surface area it is possible that the cooling produced

during evaporation may result in the set temperature not being reached.

The oven described in these Operating Instructions

must never be used for drying or heating of loads

releasing fumes which may form an

inflammable mixture in combination with air!

The ovens described here must never be operated

in areas with a hazardous atmosphere!

page 15

VO

10 Controls and indications

time

display

operating mode

indication

Tu

Mo

on

off

text display

Sa Su

Fr

Th

We

t1

push/turn control

SET key chip card reader

(main switch)

t3

t2

set

11 Operating the door

thermoshelves

4

t4

3

loop

2

1

SETUP

PRINT

on

off

push

STERI DEFRO

card

°C

display

MIN

AUTO

alarm indication

pressure displaytemperature

IN 1

°C

MAX

OUT

IN 2

%

mb

IN 1

rh

OUT

IN 2

2

CO
mb

monitor temperature

indication

close

The door is opened by pulling on the door handle.
The door is closed by the door handle being pushed in.

12 Switching on

The oven is switched on by pressing the push/turn control.

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

Oven switched on and can be operated using the
push/turn control and the SET key.

open

close

13 Setting the temperature

Hold down the SET key and set the temperature setpoint with the push/turn control.
After the SET key has been released the display briefly flashes the temperature setpoint. The display then
changes to the actual current temperature and the controller starts to control to the selected temperature
setpoint.

VO

page 16

open

14 Quick venting function

The quick venting function is used in unloading and loading the vacuum oven without having to alter the
selected vacuum setpoint:

1. Rotate control anticlockwise and select OPENDOOR in the menu.

2. For rapid venting of the vacuum oven, press SET key.

3. The vacuum oven is vented automatically to atmosphere so that the door can be opened.

4. To evacuate the vacuum oven to the most recently selected vacuum setpoint, press the SET key

again.

15 Status indication for the heating levels

Heating tray symbol

lights up as soon

as a heating tray is

inserted

4

Heating symbol

lights up as soon

3

2

1

as this level is

heated

page 17

VO

16 Selecting the operating mode

PRINT

Normal

operation

After holding down the SET key (approx. 3 sec), the current operating mode flashes on the display. A
different operating mode can be selected with the push/turn control while the SET key is being held down.
After the SET key has been released the controller operates in the new operating mode.

Weekly

programmer

Programme

operation

Printer Basic settings

SETUP

17 Setting the parameters

After an operating mode has been selected, all relevant controller settings are shown simultaneously on
the display.
A parameter (menu item) 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.
After the SET key has been released the newly set value is stored.

If the push/turn control or the SET key have not been operated for a period of 30 seconds, the controller
automatically returns to the main menu.

VO page 18

18 Normal operation

PRINT

SETUP

In this operating mode the oven operates continuously. The settings for operating the oven can be selected.
The settings act directly on the operation of the oven.

4

3

2

1

STERI DEFRO

°C

°C

MAX

MIN

AUTO

IN 1

IN 2

OUT

%

mb

rh

By rotating the push/turn control the following parameters can be selected and can be altered as described
in the Section „Setting the parameters“:

Temperature setpoint
Range: 20°C to 200°C

Temperature monitor
Adjustment range: MIN MAX AUTO

(see Section: “Temperature monitor“)

Pressure setpoint
Range:

10mb to 1100mb
LO = valve OUT permanently open

°C

°C

MAX

MIN

AUTO

mB

page 19

VO

Setting example “Normal operation“
The oven (VO500) has to heat up to 180°C and be evacuated to 50 mbar.The monitoring function has to
operate at 200°C.

Temperature
in °C

180°C

t

Pressure
in mb

1. Select operating mode “Normal operation“

After holding down the SET key (approx. 3 sec), the current operating
mode is flashing. Select operating mode I with the push/turn control
while holding down the SET key.
After the SET key has been released the controller is in
operating mode I.

2. Select temperature setpoint

Hold down the SET key and use the push/turn control to select the
required temperature setpoint of 180°C.
After the SET key has been released the oven briefly flashes the
temperature setpoint.
The display then changes to the actual temperatureand the controller
starts to control to the selected temperature setpoint 180°C.
Heating is indicated by the orange heater symbol.

PRINT

°C

t

SETUP

5. Select monitor temperature

Turn the push/turn control clockwise until the overtemperature display

MAX

is flashing. Hold down the SET key and use the push/turn control

to set the monitor temperature to 200°C.

4. Setting the vacuum

Rotate push/turn control clockwise until the vacuum indication is
flashing.
Hold down the SET key and use the push/turn control to set the required
vacuum of 50mb.
After releasing the SET key the oven briefly flashes the vacuum setpoint.
The display then shows the actual pressure and the control starts to
control to the selected vacuum of 50mb.

VO page 20

MIN

˚C

MAX

AUTO

mB

19 Weekly programmer

PRINT

In this operating mode the weekly programmer is activated and the oven switches on and off automatically
at the programmed times.
While the weekly programmer is in the OFF phase the oven is in standby mode. Heating and fan are
switched off, the controller display is dimmed and shows the clock time.
The sequence of the weekly programmer is repeated every week.
A maximum of 9 time blocks, each consisting of ON time and OFF time, can be programmed.

Mo

Tu

We

SETUP

Th

Fr

Sa

Su

on

off

By rotating the push/turn control the following parameters can be selected and can be altered as described
in the Section “Setting the parameters“:

Weekday
Range: Monday to Sunday

Mo

Tu

We

Th

h

Fr

Sa

Su

Day groups
Range: workday Mo-Fr

weekend Sa-Su

No ON time: ---­On these days the oven is not
switched on

ON time
Range: 00:00 to 23:59 hrs.

OFF time
Range: one minute above ON time to

24:00

Further clockwise rotation selects the parameters (temperature setpoint etc.) as in operating mode I.
If no further settings (temperature setpoint etc.) are made for the ON phase, the controller accepts the
values from operating mode I.
For safety reasons, always check that an ON time has been programmed only during the required time
blocks and days.

Mo

Mo

on

off

on

off

on

off

Tu

Tu

We

We

Th

Th

h

h

Fr

Fr

Sa

Sa

Su

Su

Direct setting of the temperature setpoint:

When the controller is in stand-by mode or if the weekly programmer is in the ON phase, the temperature
setpoint can be selected directly by briefly pressing the SET key. Clockwise rotation then selects the
temperature monitor. Anticlockwise rotation again selects setting the individual time blocks.

page 21

VO

Programming example “Weekly programmer“
The oven (VO500) has to switch on at 07.30 hrs from Mo to Fr (workday group) and switch off at 18.00
hrs. In addition it has to operate on Saturday from 10.00 to 14.00 hrs.

Su

Mo

Tu

We

Th

Fr

Sa

1. Select operating mode “Weekly programmer“

After holding down the SET key (approx. 3 sec) the current operating
mode is flashing. Select operating mode “Weekly programmer“ with
the push/turn control while holding down the SET key.
After the SET key has been released the controller is in operating mode
“Weekly programmer“.

2. Switch on at 07.30 hrs Mo-Fr

Turn the push/turn control anticlockwise to select the symbols “Mo-Fr
on“ (workday group).
Hold down the SET key and use the push/turn control to set the switch­on time to 7:30.

3. Switch off at 18.00 hrs Mo-Fr

Using the push/turn control select the symbols “Mo-Fr off“ (workday
group).
Hold down the SET key and use the push/turn control to set the switch­off time to 18:00.

4. Switch on at 10.00 hrs Sa

Using the push/turn control select the symbols “Sa on“.
Hold down the SET key and use the push/turn control to set the switch­on time to 10:00.

Mo

Mo

Mo

off

off

off

on

on

on

PRINT

Tu

We

Th

Fr

SETUP

Su

Sa

h

Tu

We

Th

Fr

Su

Sa

h

Tu

We

Th

Fr

Su

Sa

h

5. Switch off at 14.00 hrs Sa

Using the push/turn control select the symbols “Sa off“.
Hold down the SET key and use the push/turn control to set the switch­off time to 14:00.

VO page 22

Mo

off

on

Tu

We

Th

Fr

Su

Sa

h

20 Programme operation

°C

PRINT

SETUP

In this operating mode, up to 40 freely programmable temperature-time ramps can be set. Rotating the
press/turn control while holding down the SET key selects the following parameters in sequence after
released the SET key:

- a new programme can be programmed or
an existing programme can be edited

- stops the programme

- starts the programme

EDIT

STOP

START

After EDIT

has been activated, the following parameters can be selected and can be altered as

described in the Section “Selecting the parameters“:

Mo

Tu

on

off

Th

We

Sa Su

Fr

t2

h

t1

t3

t4

°C

MAX

PRINT

loop

SETUP

Delayed programme start: switch-on day
Range: Monday to Sunday, workdays Mo-Fr, weekend Sa-Sun, all days Mo-Su or no day. If no day of the
week is selected, the oven starts up immediately after the programme is started. ( instant start )

Mo

Tu

on

off

Th

We

Sa Su

Fr

t2

h

t1

t3

t4

PRINT

loop

SETUP

°C

°C

MAX

Delayed programme start: switch-on time
Range: 00:00 to 23:59
If no switch-on day has been selected it is not possible to select a switch-on time, and the programme
starts immediately. ( instant start )

page 23

VO

Tu

°C

°C

°C

°C

°C

Mo

We

on

off

Sa Su

Fr

Th

h

t2

t1

Duration of first ramp segment
Range: 1 minute to 999 hours

t3

PRINT

t4

SETUP

loop

°C

MAX

IN 1

IN 2

OUT

rh

%

mb

Tu

Mo

We

on

off

Sa Su

Fr

Th

h

t2

t1

t3

PRINT

t4

SETUP

loop

°C

Setpoint temperature / temperature at the end of the ramp segment
Range: 20°C to 200°C

Tu

Mo

We

on

off

Sa Su

Fr

Th

h

t2

t1

t3

PRINT

t4

SETUP

loop

°C

Vacuum at the end of the ramp segment
Adjustment range: 10 to 1100 mbar or LO

Tu

Mo

We

on

off

Sa Su

Fr

Th

h

t2

t1

t3

t4

loop

°C

MAX

MAX

MAX

IN 1

IN 1

IN 1

IN 2

IN 2

IN 2

OUT

OUT

OUT

rh

%

mb

rh

%

mb

rh

%

mb

SETUP

PRINT

Closure command of ramp segment
Range: next, spwt, loop, hold, end (see Section: „Closure commands for ramp segments“)

Tu

Mo

We

on

off

Sa Su

Fr

Th

h

t2

t1

t3

PRINT

t4

SETUP

loop

°C

MAX

IN 1

IN 2

OUT

%

mb

rh

Exit the programme write mode EDIT
Turn the push/turn control clockwise unti EXIT appears on the display, briefly press the SET key to enter

VO page 24

20.1 Closure commands for ramp segments

NEXT Follow-on with next programme segment.

SPWT (T)

SET-POINT WAIT

SPWT (P)

SET-POINT WAIT

SPWT (PT)

SET-POINT WAIT

LOOP

Wait until the setpoint temperature is reached.
The oven only starts the next programme segment when the programmed
setpoint temperature has been reached, even if the programmed
heating time has already elapsed.

Wait until the set vacuum has been reached.
The oven starts the next programme segment only when the programmed
vacuum has been reached, even if the programmed segment time has
already elapsed or if the set temperature has already been reached.

Wait until temperature setpoint and vacuum setpoint have been
reached.
The oven starts the next programme segment only when the programmed
setpoint temperature and the programmed vacuum have been reached,
even if the programmed segment time has already elapsed.

Ramp repeat function.
The set programme is repeated after passing through all programmed
segments.

1-99 = repeats
cont = continuous repeat function

HOLD

End of programme without switching off the heating; temperature and
all other settings (e.g. air valve) are maintained.

END

Programme end, heating is switched off, chamber is vented.

The programme segments are linked together by the segment closure command. These commands
therefore control the programme sequence.

closure

command

ramp

segment 4

next

segment 5

closure

command

ramp

segment 5

end

°C

programme start

delayed

closure

command

ramp

segment 1

spwt (t)

segment 1

closure

command

ramp

segment 2

next

segment 1

closure

command

ramp

segment 3

spwt (t)

segment 4

segment 3

Ramp

page 25

VO

Setting-up example “Programme operation”
The oven (VO500) has to heat up on Monday at 8.00
hrs, and after reaching the temperature be
evacuated to 50 mbar. After holding pressure and
temperature for 2 hours, the pressure should
increase to 1050 mbar over two hours and the oven
should over the same period cool down to 30°C.

1. Select operating mode “programme“

After holding down the SET key (approx. 3 sec) the current operating
mode is flashing. Hold down the SET key and select operating mode
“programme“ using the push/turn control.
After the SET key has been released the controller is in operating mode
“programme operation“.

2. Edit programme

Hold down the SET key and turn the push/turn control to select ”EDIT”.
After the SET key has been released, the controller is in the programme
writing mode.

3. Weekday for delayed programme start

Hold down the SET key and turn the push/turn control to set the start
day Mo.

4. Select clock time for delayed programme start

Using the push/turn control, select the time display.
Hold down the SET key and set the time 08:00 using the push/turn
control.

Mo

PRINT

SETUP

h

5. Select duration of first ramp segment

Turn the push/turn control further clockwise until the time of the first
ramp segment is flashing.
Hold down the SET key and set the time 00:01 using the push/turn
control.

6. Select temperature of first ramp segment

Turn the push/turn control clockwise until the temperature display is
flashing.
Hold down the SET key and set the required temperature setpoint of
180°C using the push/turn control.

7. Setting the vacuum of first ramp segment

Rotate push/turn control clockwise until the vacuum indication is
flashing.
Hold down the SET key and use the push/turn control to set the required
vacuum of 1050mb.

VO page 26

h

°C

mB

8. Setting the air/gas connection IN1 of the first ramp
segment (only with corresponding additional fittings)

Turn the push/turn control to the right until the INLET display flashes.
Hold down the SET key and select the desired air/gas connection IN1
with the push/turn control.

9. Set closure command of first ramp segment

Turn the push/turn control clockwise until a segment closure command
(e.g. end ) appears.
Hold down the SET key and set SPWT [T] with the push/turn control.

10. Select duration of second ramp segment

Using the push/turn control select the time indication.
Hold down the SET key and set the time 00:01 using the push/turn
control.

11. Select temperature of second ramp segment

Turn the push/turn control clockwise until the temperature display is
flashing.
Hold down the SET key and set the required temperature setpoint of
180°C using the push/turn control.

h

°C

12. Setting the vacuum of second ramp segment

Rotate push/turn control clockwise until the vacuum indication is
flashing.
Hold down the SET key and use the push/turn control to set the required
vacuum of 50mb.

13. Setting the air/gas connection IN1 of the second ramp
segment (only with corresponding additional fittings)

Turn the push/turn control to the right until the INLET display flashes.
Hold down the SET key and select the desired air/gas connection IN1
with the push/turn control.

14. Set closure command for second ramp segment

Turn the push/turn control clockwise until a segment closure command
(e.g end ) appears.
Hold down the SET key and set SPWT (P) with the push/turn control.

15. Select duration of third ramp segment

Using the push/turn control select the time indication
Hold down the SET key and set the time 02:00 using the push/turn
control.

mB

h

16. Select temperature of third ramp segment

Turn the push/turn control clockwise until the temperature display is
flashing.
Hold down the SET key and set the required temperature setpoint of
180°C using the push/turn control.

17. Setting the vacuum of third ramp segment

Rotate push/turn control clockwise until the vacuum indication is
flashing.
Hold down the SET key and use the push/turn control to set the required
vacuum of 50mb.

page 27

°C

mB

VO

18. Setting the air/gas connection IN1 of the third ramp

°C

segment (only with corresponding additional fittings)

Turn the push/turn control to the right until the INLET display flashes.
Hold down the SET key and select the desired air/gas connection IN1
with the push/turn control.

19. Set closure command for third ramp segment

Turn the push/turn control clockwise until a segment closure command
(e.g end ) appears.
Hold down the SET key and set NEXT with the push/turn control.

20. Select duration of fourth ramp segment

Using the push/turn control select the time indication
Hold down the SET key and set the time 02:00 using the push/turn
control.

21. Select temperature of fourth ramp segment

Turn the push/turn control clockwise until the temperature display is
flashing.
Hold down the SET key and set the required temperature setpoint of
30°C using the push/turn control.

h

°C

22. Setting the vacuum of fourth ramp segment

Rotate push/turn control clockwise until the vacuum indication is
flashing.
Hold down the SET key and use the push/turn control to set the required
vacuum of 1050mb.

23. Setting the air/gas connection IN1 of the fourth ramp
segment (only with corresponding additional fittings)

Turn the push/turn control to the right until the INLET display flashes.
Hold down the SET key and select the desired air/gas connection IN1
with the push/turn control.

24. Set closure command for fourth ramp segment

Turn the push/turn control clockwise until a segment closure command
(e.g end ) appears.
Hold down the SET key and set END with the push/turn control.

25. Exit programme writing mode EDIT

Turn the push/turn control clockwise until EXIT appears on the display.
Press the SET key briefly to enter.

26. Set temperature monitor

Turn the push/turn control clockwise and set the temperature monitor.

(see Section: “Temperature monitor”)

MIN

mB

MAX

AUTO

27. Start programme

Turn the push/turn control anticlockwise until the stop symbol is
flashing.
Hold down the SET key and select Start

VO page 28

with the push/turn control.

21 Printer

PRINT

PRINT

VO ovens may be equipped with a parallel printer interface, as used in personal computers.

This parallel printer interface on the back of the oven is suitable for connecting conventional PCL3­compatible ink jet and laser printers which are provided with a parallel printer interface (e.g. HP Deskjet
5550 or HP Deskjet 9xx).

It is important to use a screened interface cable. The screen must be connected to the plug case.

The controller is provided with an internal log memory (see Section: „Log memory”). The report data can
in this operating mode be printed out through the printer connected to the oven.

When using a colour printer, the various graphics can be printed in colour

On the printout the GLP data head is also printed automatically and contains the following information:

- Printing date

- Time period of report

- Running page number

- Serial number and oven designation

SETUP

.

By turning the push/turn control the following parameters can be selected in turn and altered as described
in the Section Setting the parameters.

Reading the date of the first print page

Reading the date of the last print page

Start graphics print

Print programme and configuration page

Exit print menu and back to main menu

page 29

VO

22 Basic oven settings

SETUP

PRINT

In this operating mode it is possible to make the basic settings of the oven. Clock time, date, day, year, and
settings of sounder, of address assignment, monitoring units, heater power and calibration are set here.

The following parameters can be selected by turning the push/turn control, and altered as described in the

Section „Setting the parameters“:

Clock time in 24-hour format
The winter/summer time changeover does not take place automatically
but must be set manually by the user.

Date
The controller incorporates a calendar which automatically allows for
the different lengths of the months and also for leap years.

Weekday

SETUP

h

Mo

Year
Range: from 2000 to 2100

Audible signal at programme end
Setting: OFF or ON

Audible signal on alarm, e.g. overtemperature

ALARM SOUND

Setting: OFF or ON

Communication address
Range: 0 to 15

(see Section: „Communication interface”)

Tolerance margin ASF
Range: 2 to 20 °C

(see Section: „Temperature monitor”)

VO page 30

Language
Settings: GERMAN, English, franCEAIS, ESPANOL and italIANO

Vent connection select IN1 or IN2 (option)

Settings: IN1 or IN2
e.g. IN1 for fresh air and IN2 for inert gas

Calibration correction for user-calibration of temperature.

CAL1 to CAL3
ADJUST – TEMPERATURE CALIBRATION
READJUST – TEMPERATURE CORRECTION

(see Section: „Calibration“)

Calibration correction for user-calibration of vacuum.

CAL1 to CAL3
ADJUST – VACUUM CALIBRATION
READJUST – VACUUM CORRECTION

(see Section „Calibration“)

Exit setup mode
= store all settings and exit SETUP mode.

22.1 Real-time clock

The real-time clock is set in SETUP and includes date and clock time.
The real-time clock serves for documentation according to GLP.
Date and clock time are marked in the report print.
On the graphics print the time axis is marked in real-time.
The clock runs with a buffer battery independently of the mains power supply.
The built-in lithium battery Type CR 2032 has a life of approx. 10 years.

page 31

VO

23 Temperature monitor and protection devices

The monitor temperature is measured with the Pt100 temperature sensors in the heating trays.
The monitoring system serves as protection for the oven load and protects the oven and its surroundings.

The oven is provided with duplicate overtemperature protection (mechanical / electronic) according to DIN 12 880.

visual alarm symbol
alight: TB alarm
flashing: TWW alarm
TWB-alarm
ASF-alarm

°C

MAX

Audible

alarm signal

Overtemperature

protection

(TWW, TWB)

MIN

Automatic

AUTO

Undertemperature protection

23.1 Mechanical temperature monitor: temperature limiter (TB)

All ovens of the VO series are equipped with a mechanical temperature limiter (TB) Protection Class1 to
DIN 12 880.
If the electronic monitor system should fail during operation and the fixed factory-set maximum temperature
is exceeded by approx. 20°C the temperature limiter switches off the heating permanently as a final
protective measure. The alarm symbol lights up as warning

temperature monitor

(ASF)

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

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

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

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

rectified

VO page 32

23.2 Electronic temperature monitor

°C

23.2.1 Overtemperature protection

MAX

Range: up to 10°C max above nominal
temperature (for nominal temperature see
label)

23.2.2 Undertemperature protection

MIN

Range: from 10°C below minimum
temperature of oven to 10°C above
nominal temperature of oven (for nominal
temperature see label).

The low alarm cannot be programmed
above the value set as high alarm.

Where no undertemperature protection is
required, this has to be set to the lowest
temperature.

MIN

MIN

AUTO

AUTO

MAX

MAX

˚C

Using the push/turn control
select the symbol

MAX

-Symbol anwählen.
Hold down the SET key and
set the protection temperature
using the push/turn control.

Using the push/turn control
select the symbol

MIN

.
Hold down the SET key and
set the protection temperature
using the push/turn control.

Note:

The temperature monitor can be set independently of the operating mode.
During ramp operation the monitor temperature must always be set sufficiently far above the maximum
working temperature.

page 33

VO

The manually set monitor temperature and the electronic overtemperature protection are monitored on
VO-ovens by an adjustable temperature monitor (TWW) Protection Class 3.1 to DIN 12 880:

23.2.3 Adjustable temperature monitor (TWW) Protection Class 3.1 to DIN 12 880
If the manually set monitor temperatur

MAX

temperature and starts to control at the monitor temperature. As a warning the alarm symbol

is exceeded, the TWW takes over the control of the

is

flashing.

°C

TB approx. 20°C above Tmax

emergency operation

TWW set manually

setpoint temperature

controller fault

t

VO page 34

23.2.4 Automatic temperature monitor (ASF)

°C

A

AUTO

A monitoring device which automatically follows the selected temperature setpoint.
The tolerance margin of the ASF is set in SETUP (see the menu item Tolerance margin ASF in the Section

„Basic oven settings SETUP“).

Automatic temperature
monitor OFF

(ASF OFF)

Automatic temperature
monitor ON

MIN

°C

MAX

AUTO

Using the push/turn control select the AUTO
symbol.
Hold down the SET key and select off using
the push/turn control.

Using the push/turn control select the AUTO
symbol.
Hold down the SET key and select on using

(ASF ON)

MIN

MAX

AUTO

the push/turn control.

Notes on the ASF:

The tolerance margin for the ASF is selected in SETUP (see the menu item Tolerance margin ASF in the

Section „Basic oven settings SETUP”).

Tolerance margin reached = ASF activated

The ASF is automatically activated when the actual temperature has reached 50% of the selected tolerance
margin of the setpoint (in the example 150°C – 5°C).

AUTO

The activation of the automatic temperature monitor is indicated by the bright

160°C

140°C

ASF set to

+/-10°C in

SETUP

ASF activated

ASF alarm

ASF activated

-symbol.

page 35

VO

Going outside tolerance margin = ASF alarm

0

0

Going outside the selected tolerance margin of the setpoint (in the example 150°C +/-10°C), for example
through opening the oven door during operation, triggers the alarm.

AUTO

Triggering the ASF alarm is indicated by flashing

If the sounder is switched on in SETUP, the ASF alarm is additionally signalled by an interrupted tone. By
pressing the SET key the sounder can be switched off temporarily until the next occurrence of an alarm
event.

and -symbol.

160°C

140°C

16

14

ASF set to

+/-10°C in

SETUP

ASF activated

ASF alarm

ASF activated

ASF-alarm

Again within tolerance margin = ASF alarm switched off

The automatic temperature monitor alarm is switched off automatically as soon as the selected tolerance
margin of the setpoint (in the example 150°C +/-100°C) is reached again.

160°C

140°C

ASF activated

ASF alarm

VO page 36

ASF activated

ASF-alarm

160°C

140°C

ASF set to

+/-10°C in

SETUP

ASF activated

Setpoint changed = ASF de-activated automatically

If the temperature setpoint is altered, the automatic temperature monitor is automatically de-activated
temporarily (see in the example the setpoint is changed from 150°C to 75°C) until the tolerance margin
of the new temperature setpoint is reached (see in the example below: the ASF is re-activated at 75°C +/­10°C).

ASF set to

+/-10°C in

160°C

160°C

SETUP

ASF activated

ASF alarm

140°C

ASF activated

ASF-alarm

140°C

85°C

65°C

ASF activated ASF activated

page 37

VO

24 Calibration

24.1 Calibration-temperature

User-calibration of oven and controller, with three calibration temperatures selected by the user.

CAL1 temperature calibration at low temperature
CAL2 temperature calibration at medium temperature
CAL3 temperature calibration at high temperature

Either a positive or a negative calibration correction can be applied to each selected calibration point.

General calibration instructions:

1. Select the required calibration temperature in SETUP and set the corresponding calibration
correction to 0.0°C.

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

3. Set the calibration correction in SETUP. If the measured reference temperature is too low, the
calibration correction setting has to have a negative sign.

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

5. The procedure can be carried out for up to 3 calibration temperatures.

Example: Correction of a temperature deviation in the load at 100°C.

1. Set calibration temperature CAL.2 to 100.0°C in SETUP and set the corresponding calibration
correction to 0.0°C.

2. Using a calibrated reference instrument, an actual temperature of 99.6°C is measured in normal
operation for a setpoint temperature of 100°C.

3. In SETUP set the calibration correction for CAL.2 to –0.4°C.

4. After the oven has settled down the reference instrument should read 100.0°C.

5. With CAL.1 a further calibration temperature can be programmed below CAL.2 , and with CAL.3 an
additional calibration temperature above CAL.2.

CAL 3

+0,8°C

factory

calibration

CAL 1

+0,5°C

CAL 2

-0,4°C

40°C

0°C

VO page 38

100°C

180°C

Note:
If all calibration corrections are set to 0.0°C the factory calibration is restored.

Calibration point 1

Calibration point 2

Calibration temperature

Range down to 10°C below

Calibration correction

Range –9.9°C to +9.9°C

CAL2

h

Calibration temperature

Range 10°C above CAL1 to

°C

°C

Calibration correction

Range –9.9°C to +9.9°C

10°C below CAL3

h

°C

°C

Calibration point 3

Calibration temperature Range

10°C above CAL2 up to nominal

Calibration correction

Range –9.9°C to +9.9°C

temperature

h

°C

°C

page 39

VO

24.2 Calibration-pressure (vacuum)

User-calibration of the oven on the controller at three user-selected vacuum values:

CAL1 pressure calibration at low vacuum pressure
CAL2 pressure calibration at medium vacuum pressure
CAL3 pressure calibration at high vacuum pressure

A positive or a negative calibration correction can be applied to each selected calibration point.

General calibration instructions:

1. Select the required calibration vacuum in SETUP and set the corresponding calibration correction
to 0mb.

2. Using a standard vacuum gauge, measure the deviation at the selected calibration vacuum under
steady conditions.

3. Set the calibration correction in SETUP. If the measured vacuum pressure is too low, the calibration
correction has to be set with a negative sign.

4. Carry out a check measurement with the reference gauge.

5. The procedure can be performed for up to 3 calibration vacuum pressures.

Example: to correct the vacuum deviation in the load at 500 mbar.

1. Set calibration vacuum CAL2 in SETUP to 500mb and set the corresponding calibration
correction to 0mb.

2. In normal operation and at the vacuum setting of 500 mbar, an actual vacuum pressure
of 497 mbar is measured using a reference gauge.

3. Set calibration correction CAL2 in SETUP to –3mb.

4. After the oven has stabilised, the reference gauge should indicated 500 mbar.

5. A further vacuum calibration below CAL2 can be programmed with CAL1, and another one above
CAL2 with CAL3.

VO page 40

Note:
When all the calibration corrections are set to 0mb, the oven is restored to the factory
calibration

Calibration point 1

Calibration point 2

Vacuum calibration

adjustment range: down to

Calibration correction

Range –10mB to +10mb

20 mbar below CAL2

h

mB

mB

Vacuum calibration

adjustment range: 20 mbar

above CAL1 to 20 mbar

Calibration correction

Range –10mB to +10mb

below CAL3

h

mb

mB

Calibration point 3

h

Vacuum calibration adjustment
range: 20 mbar above CAL2 up

to 1100 mbar

mB

Calibration correction

Range –10mB to +10mb

mB

25 Communication interface for the PC

25.1 USB interface

The chamber is fitted by default with a USB interface in accordance with the USB specification. With this
interface it is possible to control and log the chamber remotely from the computer. For this, the “Celsius“
software is used.
The chamber must be given a unique device address in the SETUP submenu, menu item ADDRESS, via which
the computer communicates with the oven . The default setting is ADDRess 0. Using this, the appropriate
oven can be selected and programmed from the computer.
If several chambers are to be connected to a computer via USB interface, an appropriate interface on the
computer and a separate cable are required for each chamber.
The maximum cable length is 5 m.

page 41

VO

25.2 Communication interface RS232C (option)

The oven is provided as standard with a serial communication interface RS232C according to
DIN 12 9001. Using this interface it is possible to control the oven from the PC and to produce reports. This
is done using the “Celsius 2007“ software.
For this purpose the oven has to be assigned a unique device address in sub-menu SETUP, option ADDRESS;
This is the address through which the PC communicates with the oven. The default setting is ADDRESS 0.
Using this address each oven can be addressed by the PC and programmed.
If several ovens are connected by the RS232C interface to one PC, each oven requires a corresponding
interface on the PC as well as a separate cable.
The maximum cable length is 15 m.
For connection of the oven to the PC there is a 9-pin connector on the back of the oven. The oven can be
connected to the PC using a screened interface cable. The screen has to be connected to the plug case. If
the serial interface is not being used, the cover supplied has to be fitted !

RS 232-C

9-pin serial

12345

69 8 7

123 4 5 678 9

not used RXD TXD not used GND not used not used not used not used

VO page 42

25.3 Bus interface RS485 (option)

When so ordered, the oven can be equipped at the factory with an RS485 interface instead of the RS232C
interface. This permits networking of several ovens (up to 16) with a single PC using a common 2-wire circuit.
The system is operated using the “Celsius 2007” software. A unique device address has to be assigned to
the oven in sub-menu SETUP, option ADDRESS. This is the address through which the PC communicates with
the oven. The default setting is ADDRess 0. Using this address each oven can be addressed by the PC and
programmed.

For this purpose the PC must be equipped with an RS485 interface or must be fitted with an RS232/RS485
converter. The cabling has to suit the individual location using a screened cable. The maximum total length
of the cable is 150 m.
A maximum of 16 devices can be addressed on the RS485 bus. A termination resistance of 220 Ohm has
to be connected to the last device.

RS 485

9-pin serial

12345

69 8 7

123 4 5 678 9

not used not used A not used not used not used not used B not used

Converter

RS232

RS485

page 43

VO

26 Log memory

The controller continuously records all relevant measurements, settings and error messages at 1-minute
intervals.

The internal log memory is arranged as a ring memory, i.e. the new data always overwrite the oldest report
data.

The report function can not be switched off but remains active at all times. The data are stored in the controller,
protected against any manipulation. The controller memory can be read to produce documentation.

Every data set is stored with a unique date stamp.

The size of the internal log memory is 1024kB. This corresponds to a memory capacity of approximately 6
months‘ continuous operation.

During ramp operation a larger amount of data are stored in the memory so that the maximum report
duration may be reduced.

If the power supply is interrupted, the instants of power failure and restoration of power are stored in the
controller.

26.1 Reading the log memory

Past report data can be printed either via the RS232C interface or by a PLC3-compatible printer connected
to the oven.

26.2 Reading the log memory into the PC via RS232C

Using the “Celsius 2007“ program the record memory of the controller can be read via the RS232C interface
into a PC where it can be shown graphically, printed, and stored in memory.

Note:

The log memory of the controller is not altered or cleared by the reading procedure.

26.3 Printing the log memory from the oven
(only for oven models with printer ports)

(see Section: „Printer“)

If the printer is not ready, e.g. cartridge empty or no paper, no report data are lost. Prints can be repeated
several times since the log memory is not cleared after printing.

The GLP data header is automatically included in the print-out: it contains the following information:

- Printing date
Time period of report

-

- Running page number

- Serial number and oven designation

VO page 44

27 Memory card: MEMoryCard XL

A temperature programme with up to 40 ramps can be programmed on the MEMoryCard XL. Programming
can take place directly on the controller or through the PC program “Celsius 2007”.
For improved clarity it is recommended that extensive programmes are prepared graphically on the PC.
Where a MEMoryCard XL is programmed, it can be read only on the same oven type for which it has been
programmed.
Marking:
The text field of the MEMoryCard XL can be marked individually with text or diagram.

27.1 Programming the MEMoryCard XL from the oven

Insert the MEMoryCard XL into the slot in the control panel field.
The selected settings are written directly to the card and stored on it. After the card has been removed, the
programme stored internally in the controller becomes again activated.

27.2 Programming the MEMoryCard XL from a PC with the oven

Link the PC to the oven with an interface cable via the serial interface (see Section: „Communication

interface“). Insert the MEMoryCard XL into the input slot in the control panel field.

Write protection:
The MEMoryCard XL can be provided with write protection using the PC program “Celsius 2007”. The
programme on the card can then not be altered on the controller.

Programming the MEMoryCard XL from a PC using the read-write unit

27.3

Using a read-write unit (which can be purchased separately) the MEMoryCard XL can be programmed
from a PC with “Celsius 2007” without any connection to an oven. It is important to ensure that the
MEMoryCard XL has to be inserted with the contact field pointing upwards towards the marking of the
read-write unit.

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Note:

The programme remains stored on the MEMoryCard XL after the card has been removed from the unit. It
can however be overwritten at any time by the PC using “Celsius 2007”.

Details on programming the MEMoryCard XL with PC and “Celsius 2007“ can be found
in the Celsius Operating Manual and in the Online Help.

27.4 Documentation on MEMoryCard XL

The actual temperatures can be documented continuously on the MEMoryCard XL while the programme is
running from the chip card. After the programme has been completed they can be read and printed using
“Celsius 2007”. The operation is described in the “Celsius 2007” Operating Manual.

A certain amount of storage space is provided for documentation depending on the programme duration.
The sampling rate is set automatically by the controller depending on the programme duration.
With a programme duration up to 270 hours the documentation of the actual values on the MEMoryCard
XL takes place with a 1-minute cycle. With programmes of longer duration the sampling time is extended
up to 30 min max.

Documentation is started afresh on each programme start; the old report data are overwritten.

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28 User-ID-Card (available as optional extra)

access
authority
card

Name:

ID:

_____________________

_____________________

The User-ID-Card stores the serial number of the oven and a unique user number in encrypted format. The
User-ID-Card therefore functions only in the oven with the corresponding serial number.

Each log-on via the User-ID-Card is documented in the internal flash memory.

If the User-ID-Card is inserted, the SETUP menu includes the additional item ID-LOCK. When the setting is
changed to ON, all changes to the oven are blocked after the chip card has been removed.

The blockage through the User-ID-Card is indicated by the illuminated key symbol
panel.

Important:

If the oven is blocked through the User-ID-Card, there is no

programme operation with the MEMoryCard XL since that card could

be removed at any time and reprogrammed externally.

on the control

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29 Cleaning

Regular cleaning of the easy-to-clean inside of the chamber prevents deposits which over time can detract
from the appearance and the functionality of the stainless steel chamber .

The metal surfaces of the oven can be cleaned with commercially available cleaning agents for stainless
steel. It is important to ensure that no rust-forming object comes into contact with the chamber or the
stainless steel casing. Rust deposits cause infection of the stainless steel.

If any contamination causes rust stains on the surfaces of the chamber, such spots must be cleaned off
immediately and the area polished.

The control panel, the plastic input modules and other plastic components of the oven must not be
cleaned using scouring cleaning agents or those containing solvents.

30 Maintenance

Important for a long life of your MEMMERT product and in case of warranty claims.

Note:
Any work involving opening up the oven must only be carried out by a suitably qualified
electrician!

MEMMERT products require little maintenance. It is however recommended to lubricate all moving parts
of the doors (hinges and closure) once a year (or 4 times a year with continuous operation) using a thin
Silicone grease, and to check that the hinge screws are tight.

A well-closing door is essential on an oven. On Memmert ovens, tight closure of the door is ensured by a
seal on the oven and another one on the door. In continuous operation the flexible sealing material may
take a permanent set. Readjustment may then be necessary
in order to ensure proper closing of the door.

• The top part (1) of the door hinge can, after releasing

the 2 screws (2) at the top or bottom of the door, be
moved slightly in the direction of the arrow.

• The door can be adjusted after releasing the socket

screw (3) and rotating the excentric (4) by means of
a screwdriver. NOTE ! Screw (3) is locked with locking
varnish. It can be released by a sharp tug using a
hexagon socket key. Apply more locking varnish to
screw (3) and tighten it.

1

4

3

2

The closing panel (6) can also be adjusted in the direction of
the arrow after releasing the screw (5). It is important that the
panel is then screwed down firmly.

VO

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5

6

31 Door seal

The areas indicated should always be dusted with
talcum powder.

Talcum

powder

Talcum powder

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32 Error messages

Error Cause Rectification

Main switch switched on, display
remains dark

Display “---“ in temperature display Fault Pt100 sensor on thermoshelf, or tray not

Thermoshelf does not heat up, yellow
heating LED is alight

Red alarm symbol is alight
continuously

Indication “E-1.1” Indication “E-2.1” Fault power unit at heating level 1 Customer service

Indication “E-1.2” Indication “E-2.2”

Indication “E-1.3” Indication “E-2.3” Fault power unit at heating level 3 Customer service

Indication “E-1.4” Indication “E-2.4” Fault power unit at heating level 4 Customer service

Errormessage “E-3” in print display Fault pressure sensor Customer service

Errormessage “E-L1” Error communication to power unit L1 Customer service

Errormessage “E-L2” Error communication to power unit L2 Customer service

Errormessage “E-LA” Error communication to all power units

Check power supply, fuse has blown Check power supply

Have fuse checked by an electrician

Fully insert the thermoshelf, or check

correctly inserted

Fault internal temperature fuse of thermoshelf Return thermoshelf to customer

Temperature limiter activated See Section: „Mechanical

ault power unit at heating level 2 Customer service

F

(possibly controller faulty)

it at another heating level

service for checking

temperature monitor: temperature
limiter (TB)”

Customer service

As far as VO appliances are concerned, error messages are shown in the alphanumeric display.
In case there is a fault on the oven, please get in touch with an authorised service organisation or contact
the Memmert customer service department.
When dealing with the service department always quote the product serial number on the oven label.

33 Supply failure

Supply failure in operating mode “Normal operation“

After a supply failure the operation is continued with the set parameters. The instant and duration of the
supply failure are documented in the record memory.

Supply failure in operating mode “Weekly programmer“

After a supply failure the operation is continued with the set parameters. The instant and duration of the
supply failure are documented in the record memory.

Supply failure in programme operation

After a supply failure lasting less than 15 minutes the current programme is continued at the point where
it was interrupted. The instant and duration of the supply failure are documented in the log memory.
On a supply failure lasting longer than 15 minutes the oven immediately starts in manual operation for
safety reasons and all settings are set to safe default values (see table).

Supply failure in remote operation

On a supply failure in remote operation the oven immediately starts in manual operation for safety reasons
and all settings are set to safe default values (see table). Programme continuation has to take place from
the PC. The instant and duration of the supply failure are documented in the log memory.

Parameter Default-value
Temperature 20 °C
Pressure 1100mB

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34 CE Conformity Declaration

EC Declaration of Conformity

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

Product: Vacuum-drying-oven
Type: VO …
Sizes: 200 / 400 / 500
Nominal voltage: AC 230 V 50 / 60Hz

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

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

Äußere Rittersbacher Straße 38
D-91126 Schwabach

2004/108/EEC

including amendments

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 ovens (VO) 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.

35 Address and customer service

MEMMERT GmbH+Co.KG
PO Box 17 20
91107 Schwabach
Germany
Phone: (+49) (0)9122 / 925-0
Fax:: (+49) (0)9122 /14585
E-mail: [e-mail]
Internet: www.memmert.com

Customer service:
Phone: (+49) (0)9122 / 925-143
or (+49) (0)9122 / 925-126
E-mail: [e-mail]

When contacting customer service, always quote the product serial number on the oven label.

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36 Index

A

accessories 9
address 53
air supply 10
air valve 13
air valve indication 11
alarm indication 11
alarm symbol 26, 28
ASF 29
automatic temperature monitor 29

B

BALANCE 36
basic oven settings 24
bus interface 35

C

calibration 32
calibration correction 32
calibration temperature 32
CE conformity declaration 50
cleaning 48
closure commands 19
connection 8
construction, oven 10
controls 11
customer service 53

D

day groups 15
delayed programme start 17
DIN 12 880 26
door 10
door handle 10

E

END 19
error messages 49

F

fan 10
fan indication 11
fan speed 13

H

heating power distribution 36
HOLD 19

I

indications 11

initial start-up 5
installation facilities 9

L

load, oven 5
LOOP 19

M

maintenance 48
material quality 4, 7
medical product 4
memory card 38
MEMoryCard XL 38

N

NEXT 19
normal operation 13

O

OFF time 15
ON time 15
operating mode,
selection of 12
operating mode indication 11
operation 10
oven settings, basic 24
overtemperature
protection 27

P

parameters, setting the 12
printer 23
programme segments 19
Protection Class 1 26
Protection Class 3.1 34
protection devices 26
purpose, intended 4, 42

R

ramp segments 19
RS232C 34
RS485 35

S

setpoint-dependent
waiting time 17
SETPOINT WAIT 19
SPWT(T) 19
stacking 9
start-up 5
Steri card 40

steriliser cassettes 47
sterilisers 42
subframe 9

T

TB 26
temperature, setting the 11
temperature calibration 32
temperature deviation 32
temperature display 11
temperature limiter 26
temperature monitor 26
temperature monitor,
automatic 29
temperature setpoint 11
time display 11
transport 4
TWW 34

U

undertemperature
protection 27
User-ID-Card 41

W

wall bracket 9
weekday 15
weekly programmer 15

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Notes:

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

27.05.2011

VO englisch

D09851