Europe, Middle East, and Africa Only
Reassembly
Lubricate the static O-rings with a thin layer of Molykote
55 M, be very careful not to damage the O-rings when
reassembling. No other pilot parts are to be lubricated.
Reassemble parts by reversing the above steps. As you
proceed, make sure that parts move freely and without
friction. In addition:
a. Once lever (key 36) and stem (key 12) have been
mounted, check that, with stem (key 12) against body
(key 19), clearance between forked stem (key 31) and
registered of lever (key 36) is 0.2 to 0.3 mm. If not, use
register to correct.
CAUTION
b. Mount diaphragm (key 9) and screw on plate (key 8), rst
by hand then with box wrench, always keep diaphragm
(key 9) rmly in place to avoid damage to stem (key 12) and
underlying levers.
c. Holding plate (key 8) rmly in place with box wrench,
tighten nut (key 7).
d. Before remounting cover (key 6), 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. Now 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 12.
CAUTION
BOOSTER VALVE MAINTENANCE
Overhaul booster valve when servicing monitor.
a. Remove cover (key 4) and replace pad (key 19),
diaphragms (keys 10 and 23) and O-ring (key 18).
b. When remounting, make sure that the tightening of the ring
nut (key 25) does not put undue stress on diaphragm
(key 23).
c. Set valve at no less than 5 mbar over monitor’s pilot
pressure value. Any value below this will result in a lower than
desired ow rate.
STABILIZER FILTER MAINTENANCE
Maintenance
Replacing Filter
a. Remove screws (key 2), cover (key 11); replace felt
(key 12) and O-ring (key 13). Reassemble in reverse
order the above sequence.
a. Remove cover (key 19); spring (key 1) and diaphragm
assembly (keys 21, 20, 3, 4, 18, and 17). Replace
diaphragm if necessary.
b. Unscrew seat (key 5), replace pad holder (key 15) and
O-ring (key 6).
c. Reassemble in reverse order the above sequence.
SPARE PARTS
Spare parts storage shall be done by proper procedures
according to national standard/rules to avoid over aging or
any damage.
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