Memmert ICH C (with CO2 control) Climate chambers - Manual (Page 11)

D30393 | Date 10/2014 11
Construction and description
2.2 Construction and function
The appliance can heat up the interior to up to 50 °C and cool it down to +10 °C. A compres-
sor is used for cooling.
Humidification of the interior is achieved by evaporating water from a tank at a set rate by
means of a hot-air generator on the rear side of the appliance. The sterile hot air is introduced
into the interior above the fan and mixed with the air current. Humidity is reduced through
condensation, using Peltier cooling modules on the rear side of the appliance. Ice that might
build up due to dehumidification is automatically defrosted in cycles.
Carbone dioxide is introduced into the working chamber via a sterile filter. The turbulence-free
interior ventilation ensures a uniform gas distribution, creating a homogeneous atmosphere.
2.3 Material
For the outer housing, MEMMERT uses stainless steel (Mat.No. 1.4016 – ASTM 430) and for
the interior, stainless steel (Mat.No. 1.4301 – ASTM 304) is used, which stands out through
its high stability, optimal hygienic properties and corrosion resistance to many (but not all!)
chemical compounds (caution for example with chlorine compounds).
The chamber load for the appliance must be carefully checked for chemical compatibility with
the materials mentioned. A material resistance table can be requested from the manufacturer.
2.4 Electrical equipment
►
Operating voltage and current consumption: See nameplate
►
Protection class I, i.e. operating insulation with PE conductor in accordance with EN 61010
►
Protection type IP 20 acc. to EN 60 529
►
Interference suppression acc. to EN 55011 class B
►
Appliance fuse: Safety fuse 250 V/15 A, quick-blow
►
The temperature controller is protected with a miniature fuse 100 mA (160 mA at 115 V)
2.5 Connections and interfaces
2.5.1 Electrical connection
This appliance is intended for operation on an electrical power system with a system imped-
ance Z
max
of a maximum of 0.292 ohm at the point of transfer (service line). The operator
max max
must ensure that the appliance is operated only on an electrical power system that meets
these requirements. If necessary, you can ask your local energy supply company what the
system impedance is.
Observe the country-specific regulations when connecting (e.g. in Germany
DIN VDE 0100 with residual current circuit breaker).