Type PS/80-1
3
PERIODIC CHECKS
Slowly close the outlet slam-shut and check line
pressure between it and regulator. A slight increase
in pressure should be detected: this results from
overload due to closing, and is followed by pressure
stabilization. If, however, outlet pressure continues
to rise, then seal is defective. Check if leak is coming
from regulator or pilot, and service.
SEP STATEMENT
Emerson Process declares this product conforms to
Pressure Equipment Directive PED 2014/68/UE.
Article 4 section 3 and was designed and
manufactured in accordance with sound engineering
practice (SEP).
Per Article 4 section 3, this “SEP” product must not
bear the CE marking.
ATEX REQUIREMENTS
▲
WARNING
If the provisions of EN 12186 and
EN 12279, national regulations,
if any, and specific manufacturer
recommendations are not put into
practice before installation and if
purge by inert gas is not carried out
before equipment’s start-up and shut-
down operations, a potential external
and internal explosive atmosphere
can be present in equipment and
gas pressure regulating/measuring
stations/installations.
If a presence of foreign material in the pipelines is
foreseen and purge by inert gas is not carried out, the
following procedure is recommended to avoid ignition
inside the equipment due to mechanically generated
sparks caused by foreign material.
• Use drain lines that vent to a safe area and low
velocity (5m/sec) fuel gas to blow out or drain
foreign material from the piping.
In any case,
• provisions of Directive 1999/92/EC and 89/655/
EC shall be enforced by gas pressure regulating/
measuring station/installation’s end user
• to prevent and provide protection against
explosions, technical and/or organizational
measures appropriate to the nature of the operation
shall be taken (e.g.: filling/exhausting of fuel
gas of internal volume of the isolated part/entire
installation with vent lines to safe area - 8.6.2 of
EN 12186 and 7.4 of EN 12279; monitoring of
settings with further exhaust of fuel gas to safe
area; connection of isolated part/entire installation
to downstream pipeline; ….)
• provision in 10.2.3 of EN 12186 and in
9.3 EN 12279 shall be enforced by pressure
regulating/measuring station/installation’s end user
• external tightness test shall be carried out after
each reassembly at installation site using testing
pressure in accordance with national rules
• periodical check/maintenance for surveillance shall
be carried out complying with national regulations,
if any, and specific manufacturer recommendations.
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.
Before servicing, cut off regulator inlet and outlet and
release any trapped pressurized gas. Use suds to
check that there are no leaks.
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
b. 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.
c. Unscrew seat (key 44) and replace pad holder
(key 45).
d. Reassemble by reversing the above sequence.
Replacing Valve Seal Pads
e. Remove plug (key 23) and seat (key 25). Slide out
spring (key 27), pad holder unit (key 29) and forked
stem (key 31).
