Metrohm 838 Advanced Sample Processor Installation Instructions - Manual (Page 13)

1.3 Parts and controls
838 Advanced Sample Processor, Introduction 7
1.3.3 Connections
W A R N IN G - F ir e H az ar d -
w ith th e sa m e t yp e a n d ra tin g o f fu se
F o r c o n t in ue d pr o tec tio n r e p lace o n ly
M a d e b y M e tr o h m
H e r is a u S w itz e rl a n d
S : 11 5 V A U : 10 0 - 2 40 V f: 50 - 6 0 H z
R S 2 3 2
M S B 1
M S B 3 M S B 2 P o w e r
K e y b o a r d
R e m o te
Figure 5 Connection panel
16 Power switch
20 Serial RS232 connection (9-pin)
17 Keypad connection 21 Mains connection
18 MSB connections MSB1 … MSB3
Metrohm Serial Bus
Connection of dosing drives and stir-
rers
22 Instrument number
19 Remote connection (25-pin)
1.3.4 Injection valve
5 4
1 2
6 3
The injection valve on the right-hand side of the tower, with its connec-
tions 1 to 6 (see Figure at left), can be used for complex sample prepa-
ration steps. The schematic below shows the assignments of the
connections in the switch positions FILL and INJECT.
Figure 6 Injection
valve
Fill Inject
If not in use, the injection valve should be protected against dust con-
tamination with the red protective cap.
16 17 18 19 20 21
22