Baker Hughes Masoneilan 12400 Series, Инструкция по эксплуатации и руководство по безопасности

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® 2017 Baker Hughes, a GE company. All rights reserved. Masoneilan 12400 Series Transmitter/Controller Instruction Manual | 49
9. Maintenance
9.1. REMOVAL OF 12400 CASE FROM TORQUE TUBE (FIGURES 1, 12, 13, 15 & 21)
a. Switch off power supply. Unscrew safety screw (106) until it disengages from the case and remove the cover (104) of the
connection compartment. Disconnect supply wires from terminals (90).
b. Remove cover (107) of the mechanism compartment. Remove the spring arm (242) from the pin (243) on the beam to
disengage and relax it.
c. Using a 2.5 mm hex wrench, loosen screw (62) to uncouple the beam (54) from the torque rod.
d. While holding the case to prevent it from falling, loosen the four screws (121), using a 5 mm hex wrench, and remove them
along with the washers (122). Remove the case by pulling it along the axis of the torque tube while being careful to prevent
from any deformation of the coupling flexure (70).
e. If the original case or an identical one is reinstalled on the same torque tube, do not remove the coupling flange (116) from
the torque rod. Also, do not disconnect the coupling flexure subassembly (70). As an alternative, loosen screws (119) using
a 1.5 mm hex wrench and remove the coupling flange-flexure sub-assembly (116-70).
f. If the torque tube is not dedicated to 12400 instrument, remove the DLT case adapter kit, if necessary. This kit includes a
flange, a gasket, and screws, (see Figure 21).
9.2. INSTALLATION OF 12400 CASE ON A TORQUE TUBE (FIGURES 1, 12, 13, 15, 20 & 21)
9.2.1. O
N A
12200/300/400 S
ERIES TORQUE TUBE
a. Mount the torque tube (137) on a support. The knife pivot at the back
of the tube must be oriented toward the top.
b. On the transmission rod (138), mount the bias assembly (241).
c. On the transmission rod (138), mount the coupling S/A (75) including
flange (116), coupling flexure S/A (70) [incl. flexure (71), pin (72) and
washer (73)], flange (117) and its two loosened screws (118) (see
figure 19).
d. Attach a weight to the torque arm equivalent to that of a displacer
half immersed in a 1.4 specific gravity liquid. The target is the
coupling S/A and bias S/A to be vertical for mid S.G.1.4. See Section
7.1.b1.
e. Position the sub-assembly vertically on the rod so that the distance
between the coupling flexure (71) and the torque tube flange is 59.5
mm ±0.5 (see figure 20). Firmly tighten this sub-assembly to the rod,
using the two lateral screws (119).
f. Put the bias at 1 mm from the coupling S/A, align the bias S/A with
the coupling S/A and tighten it on the rod with the two lateral screws
(244).
59
116
118
62
241
138
243
242
70 / 71
119
54
DANGER
1.
Do not remove covers (281, 104 and 107) from 12400 case without prior reading of ATEX instruction manual
GEA19100 (400152322). See figures 12 and 13.
2. The following actions may require opening the mechanism compartment. Before any new commissioning,
check that all covers and the plug are correctly mounted with gaskets/O-rings in good condition.
3. Use only Masoneilan original parts. Pay particular attention to the plug (90) which includes a compressible
gasket (192).
4. Read carefully instructions from the ATEX instruction Manual GEA19100 (400152322).
Figure 20
Adjustment of Coupling Flexure t (71)
On Coupling Flange (116)
244