Download Operating Manual - Wolf Laboratories

15.
Notes on refrigerating operation
Defrosting:
BINDER refrigerated incubators are built to be highly diffusion-tight. Due to the adverse effects on
temperature accuracy, automatic cyclical defrosting has not been implemented. However, the humidity in
the air can condense on the evaporator plates. The DCT™ refrigerating system largely prevents icing on
the evaporator plates.
Always close the door properly.
Two cases must be distinguished:
1. At an inner chamber temperature of more than +5 °C and an ambient temperature of +22 °C, the air
thaws the ice layer independently. Defrosting is performed continuously and independently.
2. Since the evaporator can ice up at very low temperatures, the unit should be defrosted manually. To
do this, open the door. Set a temperature of 30 °C to 40 °C, and allow the unit to operate for about 15
to 30 minutes.
3. Defrosting of the unit is now completed.
Excessive frosting of the evaporator is indicated by reduced refrigerating performance.
KB 23: Cooling power is reduced when fan speed is set to ≤ 20%.
16.
Options
16.1
Communication software APT-COM™ 3 DataControlSystem (option)
The unit is regularly equipped with a serial interface RS 422 that can connect the BINDER
communication software APT-COM™ 3 DataControlSystem. The connection to a computer is established
using the KB interface via an interface converter RS 422 / RS 232.
Make sure that the interface mode is correctly set to “Modbus” in the user level (chap. 10).
The actual temperature and fan speed values are given at adjustable intervals. Programming can be
performed graphically via PC. Up to 30 chambers with RS 422 interface can be cross linked. For further
information, please refer to the operating manual of the BINDER communication software APT-COM™.
Pin allocation of the RS 422 interface at the rear of the incubator:
16.2
Pin 2:
Pin 3:
Pin 4:
Pin 5:
Pin 7:
RxD (+)
TxD (+)
RxD (-)
TxD (-)
Ground
Ethernet interface (option)
With this option, the chamber is equipped with an Ethernet interface instead of the RS422 interface, that
can connect the BINDER communication software APT-COM™ 3 DataControlSystem. The MAC Address
is indicated below the Ethernet interface. The actual temperature, and fan speed values are given in
adjustable intervals. Programming can be performed graphically via PC. For further information, refer to
the operating manual of the BINDER communication software APT-COM™ 3.
KB (E3.1) 08/2012
page 62/84