Memmert HPP, Peltier-cooled incubators IPP plus Constant climate chambers - Manual (Page 11)

D24030 | Date 10/2014 11
Construction and description
Range A: Range A:
In this range, temperature and humidity can be combined as you please, without resulting in
any significant condensation. If there are extreme ambient conditions, the working range may
be restricted.
Range B: Range B:
If the specified range is exceeded upwards, e.g. 80 % rh at 60°C, the hot steam fed in will im-
mediately condense, due to the dew-point, at the coldest point in the appliance.
Range C: Range C:
At low temperatures and low relative air humidity, the effective range is heavily dependent on
the degree of humidity of the chamber load.
2.4 Material
For the outer housing, MEMMERT deploys 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 towards 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.
2.5 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: Fusible link 250 V/15 A quick-blow
►
The temperature controller is protected with a miniature fuse 100 mA (160 mA at 115 V)
2.6 Connections and interfaces
2.6.1 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).