Operating Instructions Waterbath Oilbath WNE 7 - 45 WPE 45 ONE 7 - 45
EXCELLENT page 2
1 General notes and safety notes............................................................................................................ 4 1.1 Transport ................................................................................................................................. 4 2 Technical data ..................................................................................................................................... 5 2.1 Material quality .................................................
1 General notes and safety notes You have purchased a technically fully proven product which has been produced in Germany with the use of high-grade materials and the application of the latest manufacturing techniques; it has been factory tested for many hours. In addition we guarantee the supply of spare parts over 10 years. Observation of the Operating Instructions is necessary for faultless operation and for any possible claims under warranty.
2 Technical data Model Volume [liter] Usable bath length A [mm] Usable bath width B [mm] Usable bath depth C [mm] Housing length D [mm] Housing width E [mm] Housing height (with flat cover) F [mm] Housing height (with gable cover) G [mm] Weight [kg] Current consume [A] Power [W] Ambient conditions Setting temperature range Setting accuracy: Indication accuracy Working temperature range 7 10 14 22 29 45 7 10 14 22 29 45 240 350 350 350 590 590 210 210 290 290 350 350 140 140 140 220 140 220 468 578 578 5
2.1 Material quality Memmert is using stainless steel (Mat.Ref. 1.4301) for the external casing as well as for the interior, an outstanding material because of its high stability, optimum hygienic features and corrosion resistance against many (not all!) chemical combinations (Attention e.g. at chlorine combinations!). The load has to be tested for its chemical compatibility with the materials mentioned above. A material-compatibility table covering all these materials can be requested from MEMMERT.
2.5 Standard equipment • Electronic fuzzy-supported PID process controller with delayed programme start and programmable hold time.
3.1 Initial start-up When the bath is started up for the first time, it should be supervised continuously until steady conditions have been reached. 3.2 Installation - waterbaths Mains connection The mains connection cable must be placed away from any hot surface. Filling max water level min water level drain valve In order to garant the high quality of the stainless steel it is recommended by the steel producer to fill the waterbath with deionised water.
3.3 Installation - oilbaths Mains connection The mains connection cable must be placed away from any hot surface. Filling max water level min water level drain valve IMPORTANT! The liquid level in the bath must be between the two markings at the right side of the tub! The spacing between top edge of oilbath and liquid level must be at least 30 mm as the oil expands strongly on heating. Draining The tank can be drained through the drain valve.
4 Bath construction and operation relatively largest heat loss (since furthest away from the heated ribs) minimum heat loss (since very close to the heated ribs) bath Insulation heating elements The heating positioned on three sides around the tank ensures a natural water circulation of the liquid inside, thus securing an optimal uniform temperature distribution. 4.1 Controls and indications time-symbol delay-symbol (delayed switch-on) hold-symbol (hold time) temperature display 7 5. 0 7 7.
4.2 Switching on The bath is switched on by pressing the push/turn control and can be operated in connection with the SET-key. Bath switched off: The push/turn control is pushed in and protected against damage. 4.3 Setting the parameters A parameter can be selected by rotating the push/turn control; all other parameters are then dimmed. The selected parameter flashes brightly and can now be altered with the push/turn control while holding down the SET key (protection against unintentional alteration).
4.3.1 Temperature setpoint Adjustment range: waterbaths: 10°C to 95°C or ca. 100°C with activation of the boiling mode oilbaths: 10°C to 200°C * 90°C Setting and indication accuracy: water-/oilbaths: 0.1°C The bath starts to heat up immediately to the set temperature. Rotate the push/turn control until the °C symbol flashes. The setpoint temperature can then be selected with the SET key depressed, as described in Section 4.3. After releasing the SET key the display briefly flashes the setpoint.
4.3.3 Hold time of the setpoint temperature Adjustment range: 1 min bis 999 hrs * 90°C hold 6h Setting accuracy: <100 hrs: 1 min ≥100 hrs: 1 hr t The bath switches off the heating after the end of the selected hold time. In this case the hold time includes the heatingup time.. Rotate the push/turn control until the Indication accuracy: <10 hrs: 1 min ≥10 hrs: 1 hr (hold) and the symbol flashes. The duration of the hold time can then be selected with the SET key depressed, as described in Section 4.
4.3.5 Circulating pump (WPE 45 only) apertures to circulating pump pipe circulating pump waterbath WPE 45 (view from above) Operation of a circulating pump can improve the temperature distribution inside the waterbath. The pump draws water from the centre of the bath and distributes it through the pipes in the front and back of the bath. The continuous water circulation avoids larger temperature differences. At a water temperature of e.g. 90°C the temperature difference in the entire bath is less than 0.
4.3.6 Temperature monitor Adjustment range: up to 10°C above nominal temperature * monitor temperature setpoint temperature Setting and indication accuracy: <100°C: 0.1°C ≥100°C: 1°C t (see also sections 4.3.8.2 and 7) Rotate the push/turn control until the monitor temperature display flashes. The monitor temperature can then be adjusted with the SET key depressed, as described in section 4.3.
4.3.8.1 Calibration Customer calibration of the bath on the controller using a self-selected calibration temperature. A positive or negative calibration difference against it can be set. General calibration instructions: 1. Set the required calibration temperature and set the calibration difference to 0.0°C (see below “set calibration temperature“ and “set calibration difference“). 2. Measure the deviation from the selected calibration temperature under steady conditions, using a reference instrument. 3.
4.3.8.2 Selection of temperature monitor (waterbaths only) * Class 2 monitor temperature setpoint temperature * Class 3.1 t Rotate the push/turn control until Setting: 2 or 3.1 monitor temperature setpoint temperature t flashes. With the SET key depressed it is possibile to select the temperature monitor as adjustable temperature limiter (TWB) Protection Class 2 to DIN 12880, or as adjustable temperature monitor (TWW) Protection Class 3.1 (see also sections 4.3.
6 Monitoring the programme sequence During the delayed switch-on the symbol flashes and the display alternates between residual time and actual temperature * 90°C t delay 6h hold 4h °C Bath does not heat up SP activated: * 90°C delay 6h hold 4h After the end of the delayed switch-on the symbol goes dark and the bath heats up to the selected setpoint temperature. The display alternates between actual temperature and SP until the setpoint temperature is reached. Heating is indicated by the symbol.
7 Temperature monitor and protection devices The monitor temperature is measured with a separate Pt100 temperature sensor inside the chamber. The monitor unit provides protection for the bath load as well as protection for bath and its surroundings. The bath is provided with duplicate overtemperature protection (mechanical / electronic) according to DIN 12880. 7.
7.2.1 Adjustable temperature monitor (TWW) Protection Class 3.1 to DIN 12880 If the manually set monitor temperatur is exceeded, the TWW takes over the control of the temperature and starts to control at the monitor temperature. The symbol flashes as warning. 7.2.2 Adjustable temperature limiter (TWB) Protection Class 2 to DIN 12880 If the manually set monitor temperature is exceeded, the TWB switches off the heating permanently and can only be reset by pressing the SET key. The symbol flashes as warning.
8 Use of the cover (special equipment) Gable cover The gable cover (may be ordered as already mounted special equipment) should always be closed in order to prevent evaporation of thermostating liquid and to obtain optimal temperature distribution. The gable shape of the cover makes sure that condensed water will not drop down into the loads. Flat cover For positioning of test flasks on top of the bath, a flat cover (special equipment) may be used.
10 Cooling system (special equipment) If the waterbath is fitted with a cooling device for quicker cooling of the bath liquid, the “water supply“ has to be connected by a hose f.ex. to a cold water supply line. The “discharge“ has to be lead into a drain. water supply (Use temperature resistant material for the tubing) discharge Please note, that the outflowing water may be hot! The discharge must be connected with tubing to an appropriate container or sink.
12 Check list for fault rectification Main switch ON, no indication on the display symbol not alight symbol alight symbol flashes symbol flashes CONF E-1 E-2 E-3 E-L Main fuse 15A or instrument fuse T80mA 250V~ on circuit board 55167.
15 CE Conformity of Declaration EC Declaration of Conformity Manufacturer´s name and address: MEMMERT GmbH + Co.
Standard units are safety-approved and bear the test marks: This product is subject to the Directive 2002/96/EC by the European Parliament and the EU Council of Ministers which concerns Waste Electrical and Electronic Equipment (WEEE). This product has been put on the market after 13 August 2005 in countries which have already incorporated this Directive into National Law. It should not be disposed off as part of domestic refuse. For disposal please contact your dealer or the manufacturer.
17 Index A G S address 25 alarm symbol 19, 20 ambient conditions 5 ambient temperature 23 autodiagnostic system 6 glossary 23 SAFE 17 safety notes 4 setpoint-dependent waiting time 13 setpoint dependent operation 23 setpoint temperature 23 setpoint temperature, selection 12 Setup menu 15 SP 13, 18 standard equipment 7 supply failure 23 switching on the bath 11 B bath construction 10 boiling mode 5 boiling mode, activate 12 brief technical description 6 C CAL 16 calibration difference 16 calibration o
page 27 EXCELLENT
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 24.04.
