Metrohm 837 IC Degasser - Manual (Page 18)

2 Installation
837 IC (Eluent/Sample/Combi) Degasser/ Instructions for Use 8.837.1003
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2.2.2 Tubing connections for sample flow path
To install the tubing connections for degassing of samples (with 837 IC
Sample Degasser or 837 IC Combi Degasser) proceed as follows:
1 Connect sample changer with degasser
To connect sample changer and degasser, a connection tubing
6.1834.050 is used. The tube end with the clamping screw is
connected via PEEK Coupling 6.2744.030 or 6.2744.034 to the
pump tubing of the peristaltic pump (see Instructions for Use of
the sample changer). Screw the other tube end with the pres-
sure screw and the flange to the Sample Inlet In (7) of the de-
gasser (Initially, screw it in loosely by hand, then tighten it by us-
ing the wrench ¼" 6.2621.050 (also included in the standard
equipment) to rotate the screw a further ¼ turn).
2 Connect degasser with injection valve
To connect degasser and injection valve, another connection
tubing 6.1834.050 is used. Screw the tube end with the pressure
screw and the flange to the corresponding Sample Outlet Out
(8) of the degasser (Initially, screw it in loosely by hand, then
tighten it by using the wrench ¼" 6.2621.050 (also included in
the standard equipment) to rotate the screw a further ¼ turn).
Screw the other end with the clamping screw to the injection
valve.
After installation is a good moment for the determination of the "Trans-
fer time" of the sample flow (The time the sample needs to flow from
the sample changer through the degasser till the end of the sample
loop), see section 4.4.1. The "Transfer time" is important to know for
the determination of the rinsing time – the longer the "Transfer time" is,
the longer the rinsing time should be.