Maintenance4325−1/A1 RT-flex50-D
Wärtsilä Switzerland Ltd
4/ 4
By turning the spindle carefully to position OPENED, the contact with spindle guide
19 can be felt. The clearance ’S
1
’ can thus be determined externally and it shall be
min. 2 mm corresponding to
1
/
3
turn of the spindle.
D Should virtually no clearance exist after frequent reconditioning of valve seat
and valve, these parts have to be replaced during the next overhaul.
3.5 Automatic opening
D Locking lever 21 is in position AUTOMATIC.
D By opening test valve 2.06, which is fitted in piping ’TV’, the same effect is ob-
tained as when actuating control valve 9.
D Upon opening test valve 2.06 the shut-off valve opens automatically. The air
now escaping at the bore for screw plug 13 indicates that valve 4 of the shut-
off valve and valve body 8 of the non-return valve have opened.
Risk of accident! Great care must be taken for this operation. To prevent acci-
dents from compressed air suddenly escaping out of the bore for screw plug 13 a
sufficient distance has to be kept to the shut-off valve.
D After shutting test valve 2.06 no air must escape from bore for screw plug 13.
⇒ After completing these checks fit and tighten screw plug 13, and close the
shut-off valve with handwheel 20 to position CLOSED (by hand).
Shut-off Valve for Starting Air: Cleaning and Function Check
2010
CHECK
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