Metrohm 709 IC Pump - Manual (Page 23)

2.5 Electrical connection
709 IC Pump
15
2.4.3 Connection to eluent container
The 6.1834.000 Aspirating tubing (i.d. = 1.5 mm, e.d. = 2.5 mm, length
= 1.2 m) supplied is slid over the aspirating capillary 15. The
6.2821.090 Aspirating filter supplied is screwed onto the other end of
the tubing. The end of the tubing with the aspirating filter is then intro-
duced in the eluent container.
Only degassed (with N
2
, He or vacuum) and microfiltered (0.45 µ m
filter) eluents may be used!
It must be ensured that the eluent used is freely miscible with any
residual solvent in the pump head (the pump head is filled with
isopropanol or methanol/water in the factory). If this is not the case,
the pump must first be rinsed with a solvent that is miscible with both
the previous and subsequent eluent (e.g. acetone).
If you use the optional available 6.5324.000 Bottle rack, the
6.1834.010 Aspirating tubing (accessory of the bottle rack, length =
2.5 m) must be installed instead of the 6.1834.000 Aspirating tubing.
The end of the tubing with the screwed-on 6.2821.090 aspirating filter
is then fixed in the eluent vessel according to the instructions on the
leaflet supplied with the bottle rack.
2.5 Electrical connection
The connection of the 709 IC Pump at the 732 IC Detector is made
acc. to Fig. 8 using the 6.2125.060 cable or another RS cable specified
as a "null modem" cable. To ensure proper functioning of the communi-
cation between the 732 IC Detector and 709 IC Pump, the sliding switch
36 on the IC pump must be set to "RS 232" and the external control
switched on with key 8 (see section 3.6).
6.2125.060 709
732
Fig. 8: Connection at 732 IC Detector