Type RP
7
aDjuSTmENT
To change the outlet pressure, turn the adjusting nut (key. 1)
clockwise to increase outlet pressure or counter clockwise to
decrease pressure.
Monitor the outlet pressure with a test gauge during the
adjustment.
ShuTDOWN
!
WarNING
To avoid personal injury resulting from
sudden release of pressure, isolate the
regulator from all pressure before attempting
disassembly and release trapped pressure
from the equipment and pressure line.
In case of disassembly of main pressure re-
taining parts for checks and maintenance pro-
cedures, external and internal tightness tests
have to be done according applicable codes.
PErIODICaL ChECKS
CauTION
It is recommended that checks be made
periodically on the efficiency of the regulator
and pilots.
regulator Checking
Slowly close the outlet cut-off valve and check pressure in
the length of pipe between the regulator and the valve.
If the system is functioning properly, an increase in outlet
pressure will be noticed due to lock-up pressure, after which
pressure will stabilize.
If, on the contrary, outlet pressure continues increasing, the
system is not functioning properly due to improper valve disc
tightness. In this case, close the valve located upstream of
regulator and carry out maintenance procedures.
Slam-Shut Controller Checking
(if installed)
See the Instruction Manual 0048EN-OS66-IM.
maINTENaNCE (SEE FIGurE 6)
!
WarNING
all maintenance procedures must be
carried out only by qualified personnel. If
necessary, contact our technical support
representatives or our authorized dealers.
The regulator and it’s pressure accessories are subject
to normal wear and must be inspected periodically and
replaced if necessary.
The frequency of inspection/checks and replacement
depends upon the severity of service conditions and
according to applicable National or Industry codes,
standards and regulations/recommendations.
In accordance with applicable National or Industry codes,
standards and regulations/recommendations, all hazards
covered by specific tests after final assembling before
applying the CE marking, shall be covered also after every
subsequent reassembly at installation site, in order to ensure
that the equipment will be safe throughout its intended life.
Before proceeding with any maintenance work, shutoff the
gas upstream and downstream from the regulator, also
ensure that there is no gas under pressure inside the body
by loosening the upstream and downstream connections.
upon completion, check for leaks using suds.
General maintenance
a. Remove the adjusting screw (key 1), the ring nut (key 2),
the plate (key 4) and the springs (key 5 and 6); unscrew
the screws (key 48) and take off the upper cover (key 7).
b. Dismount the diaphragm group, unscrewing the nut
(key 8), take off the plates (key 49 and 51), replace the
diaphragm (key 47) and the gasket (key 46).
c. unscrew the screw (key 60) and dismount the lower cover
(key 42) from the body (key 40).
d. unscrew the screw (key 20), dismount the pad holder
(key 21), replace the pad (key 22) and the gasket (key 41).
e. unscrew the screw (key 52), take off the levers group,
and check the parts and if you find any wear sign, replace
them all.
f.
Versions without shut-off device:
unscrew the plug (key 68), dismount the filter (key 37)
and the seat (key 38), if it’s worn o scored replace it.
Replace the O-ring (key 34 and 39).
Versions with shut-off device:
remove impulse line (A) and loosen dowels (G) and
remove the OS/66 slam-shut controller. unscrew the
plug (key 29), dismount the filter (key 37) and the seat
(key 38), if it’s worn o scored replace it. Replace the
O-ring (key 34 and 39).
relatching unit maintenance
(if installed)
a. Trigger the OS/66 slam-shut controller and remove
impulse line (A).
b. Loosen dowels (G) and remove the OS/66.
c. unscrew the plug (key 29) and check stem (key 28).
If worn, replace the stem by unscrewing pad-holder
(key 33) and dismantling the various components.
