Yokogawa ADMAG AXF - Manual (Page 54)

IM 01E20D01-01E 5-5
5. MAINTENANCE
NOTE
Always hold down the lead wire and terminal lug
when adjusting the mounting screw.
(5) Put the lead wire in the electrode boss, and install
the electrode cover to the boss and tighten it using
end A of the tool.
F0513.EPS
Torque driver
Electrode boss
(6) Turn on the power to the flowmeter and start
normal operation.
5.3 Removing and In-
stalling Adapters for
Sanitary Types
CAUTION
• This section describes how to remove and
install a butt weld adapter as an example.
Apply the same procedure to clamp and union
adapters.
• Turn off the power of the magnetic flowmeter,
and confirm that there is no fluid inside the pipe
before removing the instrument from the pipe
line.
• When installation, refer to section 3.3.6.
1) Removing the butt weld adapter
Remove the butt weld adapter by loosening the
mounting screws.
2) Installing the butt weld adapter
Install a gasket to fit in the groove of the butt weld
adapter, and tighten in the adapter with the
mounting screws.
Gasket
Mini-flange
Butt weld adapter
Adapter
mounting screw
F0316.EPS
Figure 5.3.1 Removing and Installing a Butt Weld
Adapter
CAUTION
• In case of standard gasket (EPDM rubber),
tighten the adapter mounting screw according
to the torque values in Table 5.3.1.
• In case that optional code GH (Silicon rubber)
is selected, tighten the adapter mounting screw
according to the torque values in Table 5.3.2.
• Tighten the adapter mounting screw in diagonal
order step by step.
• After tightening of screw, confirm that gaskets
protrude inside adapter. Protruding of gasket is
necessary to keep the sanitary requirements.
Table 5.3.1 Tightening Torque Values of adapter for
EPDM rubber gasket
T0502.EPS
Size mm (inch)
Gasket type
Tightening torque values (N-m / {kgf-cm} / [in-lbf])
15 (0.5), 25 (1.0), 32 (1.25), 40 (1.5)
50 (2.0), 65 (2.5)
80 (3.0)
100 (4.0), 125 (5.0)
3.0 to 3.5 / {30.59 to 35.69} / [26.55 to 30.98]
4.5 to 5.0 / {45.89 to 50.99} / [39.83 to 44.25]
8.0 to 9.0 / {81.58 to 91.78} / [70.81 to 79.65]
10 to 11 / {102.0 to 112.2} / [88.50 to 97.35]
EPDM rubber
(standard)
Table 5.3.2 Tightening Torque Values of adapter for
silicon rubber gasket
T0503.EPS
Size mm (inch)
Gasket type
Tightening torque values (N-m / {kgf-cm} / [in-lbf])
15 (0.5), 25 (1.0), 32 (1.25), 40 (1.5)
50 (2.0), 65 (2.5), 80 (3.0)
100 (4.0), 125 (5.0)
2.0 to 2.5 / {20.39 to 25.49} / [17.70 to 22.13]
4.0 to 4.5 / {40.79 to 45.89} / [35.40 to 39.83]
6.0 to 6.5 / {61.18 to 66.28} / [53.10 to 57.53]
Silicon rubber
(optional code GH)