OPERATING INSTRUCTIONS Vacuum Drying Oven Pump Module VO 200 VO 400 VO 500 PM 200 PM 400 PM 500
1. 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 1. VO Contents ...................................................................................................................................................................... 2 General notes and safety notes .................................................................................................................................... 4 2.1 Safety check.............................................................................
24 25 26 27 28 29 30 31 32 33 34 35 36 Calibration ................................................................................................................................................................. 38 24.1 Calibration-temperature ................................................................................................................................... 38 24.2 Calibration-pressure (vacuum) ............................................................................................
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.
Installation facilities (accessories) 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“) min. 20 cm 3 8 cm 8 cm 15 cm min. min. 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.
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.
4 Technical data Model Chamber width A [mm] Chamber height B [mm] Chamber depth C [mm] Oven width D [mm] Oven height E [mm] Oven depth F [mm] Width G [mm] Height H [mm] Depth I [mm] Chamber volume [litre] Weight [kg] Power [W] Max. number of shelves Max. load per shelf [kg] Max.
4.
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.
5 Oven construction and connections 1 2 12 3 11 4 10 5 6 7 9 8 VO page 10
13 14 15 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 page 11 Computer connection, serial communication interface Printer connection, parallel printer port (optional) Air/gas connection IN1 Air/gas connection IN2 (optional) Vacuum connection OUT Norprene connection tube vacuum pump vacuum appliance Vacuum pump module connection Control connection for pump purging Vacuum pump (optional) Mains connection pump module Connecting line pump purging Control connection pump purging Mains connection vacuum unit Fla
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.
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.
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.
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.
10 Controls and indications time display Mo Tu We Th alarm indication thermoshelves operating mode indication Fr Sa t3 Su on STERI 4 t4 t2 loop 2 °C 1 PRINT set text display SET key push/turn control (main switch) IN 2 OUT IN 1 IN 2 OUT CO2 mb %rh mb MAX MIN AUTO SETUP on off pressure display IN 1 DEFRO °C 3 t1 off temperature display push card monitor temperature indication chip card reader close 11 Operating the door The door is opened by pulling on the door
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.
16 Selecting the operating mode PRINT Normal operation Weekly programmer Programme operation Printer SETUP Basic settings 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.
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.
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 Pressure in mb 180°C t t 1. Select operating mode “Normal operation“ PRINT 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.
19 Weekly programmer PRINT SETUP 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.
Su Sa Fr Th We Tu Mo 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. 1. Select operating mode “Weekly programmer“ PRINT 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.
20 Programme operation PRINT SETUP In this operating mode, up to 40 freely programmable temperature-time ramps can be set.
Mo Tu We Th Fr Sa on IN 1 t4 t2 h off t3 Su t1 °C loop IN 2 OUT %rh °C mb MAX SETUP PRINT Duration of first ramp segment Range: 1 minute to 999 hours Mo Tu We Th Fr Sa on t4 t2 h off IN 1 t3 Su t1 °C loop IN 2 OUT %rh °C mb MAX SETUP PRINT Setpoint temperature / temperature at the end of the ramp segment Range: 20°C to 200°C Mo Tu We Th Fr Sa on IN 1 t4 t2 h off t3 Su t1 °C loop IN 2 OUT %rh °C mb MAX SETUP PRINT Vacuum at the end of the
20.1 Closure commands for ramp segments NEXT Follow-on with next programme segment. SPWT (T) 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. SET-POINT WAIT SPWT (P) Wait until the set vacuum has been reached.
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“ PRINT After holding down the SET key (approx. 3 sec) the current operating mode is flashing.
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.
18. Setting the air/gas connection IN1 of the third 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. 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.
21 Printer PRINT PRINT SETUP 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.
22 Basic oven settings SETUP PRINT SETUP 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.
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.
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.
23.2 Electronic temperature monitor 23.2.1 Overtemperature protection MAX Range: up to 10°C max above nominal temperature (for nominal temperature see label) ˚C MAX MIN AUTO 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). °C MAX MIN Using the push/turn control select the symbol MAX -Symbol anwählen.
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 is exceeded, the TWW takes over the control of the temperature and starts to control at the monitor temperature. As a warning the alarm symbol is flashing. °C TB approx.
23.2.4 Automatic temperature monitor (ASF) 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 Using the push/turn control select the AUTO monitor OFF symbol. °C Hold down the SET key and select off using (ASF OFF) the push/turn control.
Going outside tolerance margin = ASF alarm 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. -symbol. Triggering the ASF alarm is indicated by flashing AUTO and 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.
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).
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. 2. 3. 4. 5.
Note: If all calibration corrections are set to 0.0°C the factory calibration is restored. Calibration point 1 Calibration temperature Range down to 10°C below CAL2 h Calibration point 2 Calibration correction Range –9.9°C to +9.9°C °C Calibration temperature Range 10°C above CAL1 to 10°C below CAL3 h Calibration point 3 Calibration correction Range –9.9°C to +9.
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.
Note: When all the calibration corrections are set to 0mb, the oven is restored to the factory calibration Calibration point 1 Vacuum calibration adjustment range: down to 20 mbar below CAL2 h Calibration point 2 Calibration correction Range –10mB to +10mb mB Vacuum calibration adjustment range: 20 mbar above CAL1 to 20 mbar below CAL3 h Calibration correction Range –10mB to +10mb mb Calibration point 3 Vacuum calibration adjustment range: 20 mbar above CAL2 up to 1100 mbar h mB mB mB Calibr
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.
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.
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.
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.
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.
28 User-ID-Card (available as optional extra) Name: _____________________ ID: _____________________ access authority card 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.
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.
31 Door seal The areas indicated should always be dusted with talcum powder.
32 Error messages Error Cause Rectification Main switch switched on, display remains dark Check power supply, fuse has blown Check power supply Have fuse checked by an electrician Display “---“ in temperature display Fault Pt100 sensor on thermoshelf, or tray not correctly inserted Fully insert the thermoshelf, or check it at another heating level Thermoshelf does not heat up, yellow Fault internal temperature fuse of thermoshelf heating LED is alight Return thermoshelf to customer service for che
34 CE Conformity Declaration EC Declaration of Conformity Manufacturer´s name and address: MEMMERT GmbH + Co. KG Äußere Rittersbacher Straße 38 D-91126 Schwabach Vacuum-drying-oven VO … 200 / 400 / 500 AC 230 V 50 / 60Hz Product: Type: Sizes: Nominal voltage: The designated product is in conformity with the European EMC-Directive 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.
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.
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 e
Notes: VO page 54
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Memmert GmbH + Co. KG | Postfach 1720 | D-91107 Schwabach | Tel. +49 (0) 9122 / 925 - 0 | Fax +49 (0) 9122 / 145 85 | E-Mail: sales@memmert.com | www.memmert.com 27.05.
