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SM 90 (see drawing 6c)
The following part has to be replaced in this component.
Diaphragm 02
To replace these parts, the following steps are to be taken.
Disconnect impulse line 21
Unscrew screw connections 15
Remove cover 01
Remove diaphragm 02
Remove diaphragm plates 05 and 07 with diaphragm 02 and nuts
Remove nut 03
Remove disk 05
Replace the diaphragm 02, disk 05 and nut 03 use Loctite 243 (blue)
Place the complete diaphragm assembly back
Place cover 01
Tighten screw connection 15 (even and diagonally)
Connect impulse line.
Figure 6c: Pressure converter SM90
© 2017 Honeywell International Inc
Operation and maintenance manual HON HSV086
23
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