Owner manual
3 Installation
757 VA Computrace – Hardware
18
66 Threaded opening
for FEP tubing
68
(6.1805.180); optional
waste solution lead-off
67 Threaded opening
for FEP tubing
34
(6.1805.090, already
permanently attached); optional waste
solution supply from gas wash bottle to
waste
5 Install reference electrode
•
Insert reference electrode
22
in opening
58
.
•
Attach electrode cable
27
(RE) to reference electrode
22
: push cable lug
under the screw and then tighten screw firmly.
•
Turn reference electrode
22
so that the electrode cable
27
points to the
rear and not to the side (in the latter position it may become kinked and
damaged when cover
1
is closed).
6 Install auxiliary electrode
•
Insert auxiliary electrode
39
(6.0343.000 Pt auxiliary electrode or GC
auxiliary electrode, see
section 3.6
) in opening
51
.
•
Attach electrode cable
37
)
(AE) to auxiliary electrode
39
: push cable lug
under the screw and then tighten screw firmly.
•
Turn auxiliary electrode
39
so that the electrode cable
37
points to the
rear and not to the side (in the latter position it may become kinked and
damaged when cover
1
is closed).
7 Install MME or dummy stopper
in operation with MME:
•
Carefully insert multi-mode electrode
17
(6.1246.020) in opening
55
(the
underside of the capillary must not touch the measuring head during in-
sertion) and push in as far as it will go.
•
Screw FEP tubing
30
(6.1805.180) for inert gas supply into connection
72
of the MME
17
.
•
Screw FEP tubing
38
(6.1805.180) for inert gas supply into connection
73
of the MME
17
.
•
Attach electrode cable
16
(WE) to screw connection
89
of the MME
17
:
push cable lug under the screw and then tighten screw firmly.
in operation with RDE (option):
•
Insert stopper
98
(6.2709.040, option) into opening
55
as far as it will go
so that the two blind holes point to the rear of the stand.
•
Screw FEP tubing
30
(6.1805.180) into upper hole of stopper
98
.
•
Screw FEP tubing
38
(6.1805.180) into lower hole of stopper
98
.
8 Install measuring vessel
•
Tilt back measuring head arm
19
.
•
Slide measuring vessel
6
into holder
3
from the front and fill with analyte
solution or dist. H
2
O (storage solution) until the tips of the MME and the
reference electrode are immersed in the liquid.
•
Lower measuring head arm
19
and cover
1
.