Setup; Transmitter Start-Up; Setting Up The Wet-Section - ABB Navigator 550 Operating Instructions Manual

Navigator 500
Hydrazine analyzer

4 Setup

This section describes how to set the analyzer up for first-time
use.
Caution. Do not attempt to setup the analyzer unless the
wet-section and transmitter are fully installed and ready for
operation.
If multiple wet-sections are to be connected to a transmitter, an
additional setup procedure is required – see Appendix B,
page 67.
Warning. This equipment uses chemical solutions in its
operation. Suitable precautions must be taken to ensure
safe handling.
Caution. This equipment will be damaged if subjected to
freezing conditions.

4.1 Transmitter start-up

Ensure all electrical connections have been made and switch
the power on to the transmitter. If the wet-section is being
commissioned for the first time, calibration and programming of
parameters is required – refer to Section 5.1, page 23 to
perform a calibration for the first time.
The menu structure, general operation and menu descriptions,
including Calibration are detailed Section 7, page 39.

4.2 Setting up the wet-section

Referring to Fig. 4.1 (overleaf):
1. Fill the hydrazine sensor assembly with fresh gel as
follows:
a. Holding the black closure cap tightly in place on the
filling syringe, snap the syringe plunger into position
and remove the black closure cap.
b. Slowly inject the filling gel through the lower hole in the
outer jacket until it reaches the top hole.
c. Remove the syringe and replace its closure cap.
d. Fit lower 10-32 UNF blanking plug
e. Fit upper 10-32 UNF blanking plug
2. Push the hydrazine sensor assembly
the sub-panel, ensuring sensor outlet tube
positioned directly above drain tundish
G
3. Connect the tube
H
nipple .
Note. Hold the sensor firmly at the top so that the
centre portion is not pushed out when the tube is
connected.
OI/AHM550–EN Rev. A
A
.
B
.
C
into clip
F
.
from the mixing / delay coil to inlet
4. Connect the hydrazine sensor
J
sensor
corresponding color-coded sockets on the hydrazine
sensor connector block.
5. Set an appropriate sample flow into the wet-section –
check that the solution weirs over the adjustable overflow
pipe in the constant-head unit and flows through the
sensor.
6. Fill standard solution and reagent solution containers with
appropriate solutions – see Section 8.1, page 53.
7. Remove reagent tube
located on the top of the reagent dosing chamber
8. Place a small beaker into the main case and hold the end
of reagent tube
through the tube to displace any air bubbles.
9. Reconnect reagent tube
10. Remove mixing / delay coil tubing
chamber outlet
11. Establish flow through the new disc by clamping the
sample inlet tube
syringe to the reagent dosing chamber outlet
12. Refit the mixing / delay coil tubing
dosing chamber outlet
13. Remove the clamp from sample inlet tube
14. Allow approximately one hour for caustic dosing to be
established (the pH of the effluent at the sensor outlet
must be at least 10.5).
Note. If, during normal operation, the transmitter does not
display the expected hydrazine level, refer to Appendix A,
page 63, for troubleshooting procedures.
D
on
E
is
I
(red) and temperature
(blue) electrical connectors
K
from membrane clamp
K
over it to enable the reagent to flow
K
to membrane clamp
G
from reagent dosing
N
.
O
and applying suction from a plastic
G
to the reagent
N
.
O
to the
L
,
M
.
L
.
N
.
.
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