Europe,
Middle
East,
and
Africa
Only
Type FL
19
CauTION
The above clearance can be checked by
gently pulling stem (key 13) upward.
Use the proper tool to make sure that the
top plate (key 9) is on the same plane as the
supporting the diaphragm (key 10) in the body
(key 25).
b. Mount diaphragm (key 10) and screw on plate (key 9),
first by hand then with box wrench, (always holding upper
diaphragm (key 10) firmly in place) in order to avoid
damage to stem (key 13) and levers below.
c. Holding plate (key 9) firmly in place with box wrench,
tighten nut (key 6).
d. Before remounting cover (key 4), center diaphragm as
follows:
• mark a reference point (with pencil) on the diaphragm;
• turn it to the right without forcing and mark another
reference on body
• turn diaphragm to the left and mark a further reference
• position the diaphragm mark midway between the two
marks on the body.
e. Tighten all screws uniformly to ensure proper sealing.
Calibration
See the paragraph Pilot Adjustment on page 10.
CauTION
The pilot has a wide range of self-adjustment
values. However, given actual operating
conditions, it may necessary to assist it at
times by finding the best setting of register/
pin screw (key 29) or the most suitable
calibration jet (key 15).
TyPE PS/79-1, PS/79-2, RE/79-1 AND
RE/79-2 PILOTS (SEE FIGURE 24)
Installation
Identical to Type PS/79 and 80 series (see page 18).
Startup
Identical to Type PS/79 and 80 series (see page 18).
Periodical Checks
Identical to Type PS/79 and 80 series (see page 18).
maintenance
CauTION
Servicing should be carried out by
qualified, skilled personnel only. For
further information, please contact our
Technical Support Representatives or our
authorized dealers.
Let gas under pressure flow out of the
relevant part of the system before servicing.
Replacing Filter
a. Remove screws (key 54), cover (key 58), and replace felt
(key 41). Reassemble by reversing the above sequence.
Replacing Stabilizer Diaphragm and Seal Pad
a. Remove screws (key 54), cover (key 55), spring (key 52)
and diaphragm assembly (keys 53, 51, 50, 49, 48, and
47). Replace diaphragm if necessary.
b. Unscrew seat (key 44) and replace pad holder (key 45).
c. Reassemble by reversing the above sequence.
Replacing valve Seal Pads
a. Remove plug (key 23) and seat (key 25). Slide out
spring (key 27), pad holder unit (key 29) and forked stem
(key 31).
b. Replace pad holder (key 29) and O-ring (key 32).
c. Reassemble by reversing above sequence.
General Maintenance
a. Proceed as directed in the replacement of filter, stabilizer
diaphragm and seal pad, and valve seal pads (see
instructions above).
b. Completely release spring (key 5) by turning the adjusting
screw (key 1) counter clockwise.
c. Remove screws (key 10) and cover (key 6).
d. Keep plate (key 8) blocked with a box wrench, unscrew
nut (key 7). This must be done exactly as described to
prevent damage to or breaking of drilled needle valve
(key 17).
e. Unscrew plate (key 8) from stem (key 12) and slide off split
pin (key 35).
f. In Types RE/79-1 and 2, remove locknut (key 15) by
means of an appropriate wrench and slide out parts (keys
62, 63, 16 and 17), make sure that the surface of seat
(key 61) is intact.
g. Replace any worn seals.
