Metrohm 855 Robotic Titrosampler - Manual (Page 36)

3.12 Connecting external pumps ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
28 ￭￭￭￭￭￭￭￭ 855 Robotic Titrosampler
Note
If an MSB stirrer is connected to the MSB1 socket, then the stirrer con-
nector at tower 1 cannot be used, because both sockets are controlled
internally via MSB1.
3.12 Connecting external pumps
If no integrated pump or a Sample Processor model version without pumps
is used, up to two external pumps per tower can be connected.
The 843 Pump Station (as model version with membrane pumps or with
peristaltic pumps) has two pump drives and is connected to two sockets of
the Sample Processor via the 6.2141.300 connection cable (double cable
with two plugs). The 772 Pump Unit (peristaltic pump) and the 823
Membrane Pump Unit (membrane pump) have a firmly mounted con-
nection cable with a single plug.
Connecting pumps
Figure 22 Connecting pumps
Connect external pumps as follows:
1 Connect the connection cable
￭ Plug each of the two threaded plugs of the connection cable into
one of the connection sockets Ext. pump 1 or Ext. pump 2 on
the rear of a tower of the Sample Processor.
Correct alignment of the 3 contact pins must be observed.
￭ Tighten the knurled screw at the front end of the plug by hand in
clockwise direction. This will secure the plug.
2 With an 843 Pump Station, connect the other end of the cable (9-pin
D-Sub plug) to the socket Remote 1 of the pump.