Emerson Mobrey Hydratect 2462, Справочное руководство

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15
Reference Manual
24625020, Rev AA
Installing the electrodes
March 2017
Installing the electrodes
2.2.3 Fitting the electrode
To avoid damage, electrodes should be kept in their packaging until they are installed.
They are supplied complete with fixing nut, termination nuts, and washers (
Figure 2-3 ).
Figure 2-3. Mobrey Series III Electrode
A. Threaded nut for fixing to an insert or manifold port.
B. Termination nuts and washers for electrical connections.
C. Ceramic insulators.
Electrode fitting procedure
1. Carefully unpack the electrode, and then examine for external damage to the
ceramic insulators or the electrode seating.
If the electrode or the electrode insert seat is damaged in any way, contact your
local Emerson sales office.
2. To minimize thread seizure problems, lightly coat the insert thread with anti-seize
compound (part number 830007220).
3. Ease the electrode into the insert and then turn the electrode fixing nut, clockwise,
with your fingers to engage the threads (
Figure 2-4 on page 16 ).
4. Use a long-reach 25 mm AF socket spanner to gradually tighten the electrode fixing
nut until the electrode does not rotate in its' seat.
5. Tighten the electrode fixing nut a further
1
/
8
th
to
1
/
4
turn to complete the
procedure.
Note
For a high pressure electrode, the final
1
/
8
th
to
1
/
4
turn corresponds to a torque level of
between 28 lb.ft (35 Nm) and 47 lb.ft (60 Nm). The
1
/
8
th
turn is the recommended
tightening condition,
1
/
4
is the maximum allowable, and the tightening torque used must be
the minimum to achieve this. Failure to comply with this limitation may cause damage to
the port or to the electrode from over tightening.
A
B
C
C