Type RP
8
d. Carefully clean and check all components, replacing those
worn out.
e. Lubricate moving parts and reassemble components by
carrying out the afore-described steps in reverse order.
Check the correct relatching of the slam-shut controller
(see Startup item b).
See the Instruction Manual 0048EN-OS66-IM for the
slam-shut controller maintenance.
reassembling
Lubricate all seals with “MOLYKOTE 55 M” and be very
careful not to damage them when reassembling.
Reassemble by reversing the above steps.
As you proceed, make sure that parts move freely and
without friction.
In addition:
a. Diaphragm (key 47) is properly reassembled by
lubricating it with some grease and by carefully fitting it
into the case of the lower cover (key 42).
b. All screws are duly tightened in order to ensure proper
sealing.
c. If installed check the correct relatching of the slam-shut
controller (see Startup item b).
d. Check for leaks using suds.
SParE ParTS
Spare parts storage shall be done by proper procedures
according to national standard/rules to avoid over aging or
any damage.
TrOuBLEShOOTING
Table 3.
General Troubleshooting for RP Series
SymPTOmS
CauSE
aCTIONS
The regulator does not open
Lack of incoming gas
Check the station feeding
The slam-shut controller has not been reset
Manually reset the slam-shut controller
Drop in pressure downstream from the regulator
Insufficient upstream pressure
Check the station feeding
Flow requirements higher than the flow
that the regulator can supply
Check the regulator sizing
Filter upstream is obstructed
Clean or replace it
Increase in pressure downstream from the regulator
or slam-shut device being activated
Tight shutoff gaskets are worn
To be replaced
Deposits of grime on the tight shutoff pad are
obstructing proper positioning of the shutter
Clean or replace it
Diaphragm damaged
To be replaced
Slam-shut device does not execute tight
shutoff procedure
O-ring and/or slam-shut pad worn
To be replaced
Slam-shut seat damaged
To be replaced
