7660 And 7661 - ABB 7651 Instruction Manual

...3 MECHANICAL INSTALLATION
and 7661 – Fig. 3.12
The reservoir comes partially assembled as shown in Fig. 3.12a.
Complete the assembly and fill the reservoir as shown in Fig. 3.12b and Fig. 3.12c respectively.
Reservoir Rod
Sensor Holder
a) – Partially Assembled Reservoir
Caution. Wear eye protection
when filling the reference
electrode with electrolyte.
12
Filler Plug
Filler Cap
Reservoir
Reservoir Tube
Note. Ensure that the reservoir
tube is not kinked and does not
contain air bubbles.
1
Unscrew the reservoir tube connector
fitting 2 from the sensor holder ensuring
the plastic ferrule 3 is retained.
2
Slide the connector fitting over the tube,
3
then the ferrule.
4
Push tubing onto the fitting on the
sensor holder.
5
Tighten the connector firmly.
Fill the reservoir with saturated
KCl solution and squeeze the
delivery tube repeatedly until all
air is expelled from the system.
Fig. 3.12 Fitting and Filling the Reservoir
(Electrodes and Temperature Compensator Omitted for Clarity)
The filler plug also acts as a
shut-off valve. Do not tighten it
fully (unscrew one turn from
fully closed position) to avoid
creating a vacuum.
Pull off the filler cap.
Replace the filler cap ensuring
the 'O' ring is in place.
Fit the reservoir rod into
the sensor holder by
inserting it firmly and fully
into the correct location.
6
b) – Fully Assembled Reservoir
9
6
7
8
c) – Filling the Reservoir
'O' Ring