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2.1 Material quality
Memmert is using stainless steel ( Mat.Ref. 1.4301) for the external casing as well as for the interior, an
outstanding material because of its high stability, optimum hygienic features and corrosion resistance
against many (not all!) chemical combinations (Attention e.g. at chlorine combinations!).
The thermofluid has to be tested for its chemical compatibility with the materials mentioned above.
A compatibility table covering all these materials can be requested from MEMMERT.
WARNING! Always pull out the supply plug before
opening the bath cover!
2.2 Electrical equipment
Operating voltage see rating label 50/60 Hz
Protection Class 1, i.e. operating isolation with ground connection to EN 61 010
Protection IP20 to DIN EN 60 529
Interference suppression to EN55011 Class B
Bath protected by a fuse 250V/15A fast blow
Controller protected by a 80 mA fuse (200 mA on 115 V)
When connecting a MEMMERT bath to the electrical supply you have to observe any local
regulations which apply (e.g. in Germany DIN VDE 0100 with FI protection circuit)
2.3 Note on EMC ( electromagnetic compatibility)
This product is intended to operate on a supply network with a system impedance 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 which involves opening up the bath must only be carried out by a properly
qualified electrician
2.4 Brief technical description
MEMMERT-waterbaths are electrically heated and electronically controlled.
The temperature of the thermostating liquid is continuously controlled by a microprocessor-controller
with pulse package control. Electronic microprocessor-PID-controller with continuous power matching
and autodiagnostic system with fault indicator (see section 12), integral timer for digital programme time
selection.
The temperature is measured using a Pt 100 temperature sensor. The accuracy is asfollows:
WNB
Setting accuracy
0,1ºC
Temperature fluctuation
±0,1ºC
The components of temperature control are controlled by integrated malfunction-recognition. The heaters
are installed outside - therefore no problems through dirt or limeresidue.
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BASIC
