B medical systems MB 3000 G, Instructions For Use Manual

Page: 26 / 32

26
7 Additional equipment
7.1 Rechargeable battery
• The monitoring functions of the electronics during an interruption of the power supply for at least 48
hours are maintained by an integrated rechargeable battery.
• This battery is automatically charged when the appliance is connected.
• If the capacity of the battery is no longer sufficient to take over the control function, the error message
“BAT.1 LOW/FAIL” appears on the display.
• At the first starting up it may happen that the message „BAT.1 LOW/FAIL” appears. The message will
disappear as soon as the battery is charged.
• The battery should be pre-emptively replaced every 2 years. This replacement must only be carried out
by a recognised service technician. Before dismantling the battery the appliance must be switched off and
the plug pulled out.
• The battery is a lead-acid storage battery that must be disposed of separately in the case of a fault.
7.2 Remote contact
• There are two terminals with three floating
contacts on the back of the unit that can be
used to trigger an additional external alarm
(visual or audible).
• The upper contacts correspond to tempera-
ture-alarm, the lower contacts correspond to
a powerfail-alarm.
• Pressing the ENTER-key in an alarm situation
only switches off the internal audible alarm.
The key does not interfere with the external
alarm. The external alarm signal is only
switched off once the cause of the alarm has
been eliminated.
• A voltage of between 12V DC and a maxi-
mum of 250V AC can be connected at the
contacts. The maximum load must not
exceed 8A. The minimum power rating is
100mA / 5V.
7.3 RS485 Interface
• The unit is equiped with an RS485 interface. You can use this interface
to connect the unit to a PC or to network it to other refrigerating equip-
ment.
• For information about connection options and software, contact your
local service centre.
Resting state
Alarm
TEMPERATURE-ALARM
Resting state
Alarm
POWERFAIL-ALARM