Europe,
Middle
East,
and
Africa
Only
Type FL
14
To prevent this, replace the two screws
(key 9) with threaded rods and their nuts,
remove the remaining screws and use nuts
to slowly release spring tension.
d. Slide sleeve-diaphragm assembly (key 16 and 10) out of
inlet cover (key 11) and remove indicator (key 34).
e. Loosen screws (key 27), axially slide out of sleeve (key 16)
plates (key 8 and 12) and diaphragm (key 10). Replace
O-rings (key 26 and 28).
f. Loosen screws (key 5) and dismount stub pipe (key 190).
g. Unscrew travel indicator support (key 36) from inlet cover
(key 11), dismount parts, replace O-rings (keys 35 and
37) and O-ring (key 4) on the inlet cover (key 11).
h. Loosen screws (key 5) and axially slide out outlet flange
(key 22 or 200 for the widened outlet and SRS versions).
Replace O-ring (key 18), anti-friction rings (key 2) and
O-ring (key 3).
i. Remove pad holder (key 19) from the outlet cover (key 3).
l. Loosen screw (key 25), pad retainer (key 21), remove and
replace pad unit (key 20).
m. Check that the part of sleeve (key 16) that touches pad
unit (key 20) is intact. If not replace sleeve.
n. Invert stub pipe (key 190) and slam-shut using the inlet
flange (key 100) as a support.
o. Loosen the special screws (key 133) and dismount the
slam-shut actuator.
p. Loosen screws (key 135) and remove hub (key 124).
Remove seeger (key 122) and dismount parts.
Replace O-Rings (keys 120,125 and 126) and anti-
friction rings (key 119). Check bearing (key 128) and
replace it if is necessary.
q. Slowly loosen nuts (key 112) to slowly release spring
(key 114) tension (key 114).
r. Remove sleeve (key 117), disk (key 110) and pad holder
(key 19), loosen screw (key 25) and replace pad unit
(key 20). Replace O-Ring (key 107), for DN 65 to DN 150
sizes replace also (key 47).
s. Replace O-Ring (key 115), anti-friction rings (key 2) and
O-rings (key 3).
t. Check all moving parts, paying special attention to nickel
plated surfaces. Replace any that are worn or damaged.
v. Clean all stripped-down parts with petrol and dry with
compressed air.
Reassembly
Lubricate all seals with MOLyKOTE 55 M, being very careful
not to damage them when reassembling.
Reassemble the parts by reversing the above steps.
As you proceed, make sure that parts move freely and
without friction.
In addition:
a. Before fitting sleeve-diaphragm assembly (keys 16 and
10), recompose indicator group (keys 34, 35, 36, 37,
38 and 40) and mount it on inlet cover (key 11). Attach
spring collet (key 33) to plate (key 8) upon completion of
reassembly.
b. Complete reassembly and make sure to tighten all
screws uniformly.
c. Remove cap (key 40) and tap with a rubber or wooden
hammer indicator (key 34) so as to couple spring collet
(key 33) and plate (key 8).
d. Use an air pump connected to fitting (key 7) to check
proper regulator working order.
e. When reassembling the hub (key 124), make sure that
the pawl of shaft unit (key 121) is facing the inlet flange
(key 100).
f. Check that slam-shut sleeve (key 117) opens when shaft
unit (key 121) is rotated anticlockwise.
g. Before reassembling the slam-shut actuator, make sure
that the pawl of shaft unit (key 121) is against the sleeve
(key 117). Upon completion of the assembling procedure,
check that slam-shut actuator has been correctly mounted.
h. After the reassembly completion, check the proper
functioning of all parts. Check the regulator with soapy
water, making sure there are no leaks.
i. Remount regulator on the line and reestablish
all connections.
