Operating instructions
2 Technical data summary
MEMMERT appliances are electrically heated and thermostatically controlled. Series
UM/SM have natural air circulation whilst series ULM/SLM have fan assisted circulation.
A PT100 DIN B, DIN 43 760 measures the temperature in the working chamber.
Ambient Ambient temperature 5°C - 40°C, rH max. 80%.
conditions Overvoltage Category: II
Contamination degree: 2 according to IEC 664
Setting tempera- 30°C to nominal temperature
ture range (See rating plate)
Min.
working
temperature
range
A stable temperature control of ovens without fan resp. with fan
switched-off can be guaranteed from 5°C above ambient temperature.
Due to the heat generated by the fan motor, a stable temperature control
of ovens with fan can only be guaranteed from approx. 10°C above
ambient temperature.
Max. working Nominal temperature = maximum temperature (see rating plate),
temperature range
Overheat safety Serial adjustable overheat control in compliance with DIN 12880 Class
device 3.1; Class 2 protection (adjustable temperature limiter) available on
request.
Class
2
3.1
Aim of
protection
Protection of
the oven, the
environment
and the
contents of the
oven
Scope of
protection
No risk liable to
originate from the
oven in the event
of a fault
The contents of
the oven are
protected against
overheating
Safety
device
TWB
(adjustable temperaure limiter)
automatically shuts off the
oven if the user selected
temperature limit is exceeded.
TWW
(adjustable overheat controller)
takes over control of oven if
temperature is exceeded.
Safety
measures
Special safety
measures required
depending on the
purpose for which
the oven is used
2.1 Electrical supply
50 or 60 Hz. Adequate insulated supply which incorporates earth conductor according to
EN 61010, Protection IP 20, no humidity protection according to DIN 40 050. Interference
suppression Grade N according to VDE 0875, limiting values of the class B, part one.
A fuse 250V/15A quick is used for oven protection (in ovens with 400V 3N~ power supply
3 fuses).
Before current-connection please compare label on the oven and instructions of
your local current supplier.
(e.g.
in Germany, DIN VDE 0100 with Fl - safety device).
UM 200-800/SM 200-400, ULM/SLM 400-800