Installation Procedure; Installation Scheme; Installation / Start- Up Instruction - Dresser Rb 4700 Inbetriebnahmeanleitung

Installation Procedure

(A) Remove protective covers from inlet and outlet of
regulator Both regulator and tubing must be clean in
order to avoid damage
(B) Install the regulator on to the pipe, making sure that
arrow on the body fits with the direction of flow
(C) Connect control lines of regulator and shut-off valve
to a turbulence- free zone on to the downstream
pipe A manometer should also be connected down-
stream the regulator It may be necessary to install
larger diameter pipe on the downstream side to limit
the flow velocity
(D) Check all connections between regulator, safety shut-
off valve and pipe for tightness If soap solutions are
used for checking, dry regulator thoroughly
(E) For setting the downstream pressure turn clockwise
or anticlockwise direction the screw on the top of the
pilot
Caution: in addition, the regulator must be installed
according to good engineering practice. The installation must
also comply with national and/or international standards.
Start- up Instructions
Caution: before start-up, the installation must be
checked for leaks.
To start-up the regulator properly, proceed as follows ac-
cording to the installation scheme shown
below:
(1) check that the upstream and downstream valves and
the bleed cock are closed;
(2) if the apparatus is fitted with the shut-off valve, the
shut-off valve must be closed; After verifying the above
mentioned points, proceed as folows:

Installation Scheme

(A) open the upstream stop valve (1) slowly and just
enough to ensure a very small flow of gas; check the
upstream pressure gauge (2);
(B) reset the shut-off valve (see section „Resetting of the
shut-off valve");
(C) check that the downstream pressure is rising slowly
on the downstream manometer (7 or 10) : the down-
stream pressure should stop at the set pressure val-
ue or on a value a little higher;
(D) when the upstream pressure is also stabilised, slow-
ly open the upstream stop valve (1) to a full open
position;
(E) then slowly open the downstream 11 valve (8 or 11)
or;
At this point the regulator is in operation Likewise
the process can be followed for the installation of a
monitor regulator in line with the regulator (see in-
stallation scheme), keeping in mind that the ma-
nometer (7) installed between the regulators has to
indicate the same, or little higher, pressure value as
the upstream manometer
Maintenance
Maintenance is extremely dependant on the quality of
the gas used (humidity, impurities, gasoline) and the ef-
ficiency of the filter used upstream of the regulator: it is
recommended to install upstream of the regulator a fil-
ter, which traps solid and liquid particles present in the
fluid that would otherwise impair the proper function-
ing of the apparatusDepending on the gas moisture
content, contamination and chemical composition, oc-
casional cleaning may be required
Caution: before any service operation, be sure that up-
stream stop valve is closed and the gas installation is de-
pressurised.
Item
Description
1
Upstream Stop valve
2
Manometer
3
Pilot Regulator Monitor
(Shut-off Valve: Pilot Regulator)
4
Monitor Regulator
(Shut-off Valve: Regulator)
5
Shut-off Device
7
Manometer
8
Pilot Regulator (Shut-off Valve:
Downstream Stop valve)
9
Regulator
10
Manometer
11 Downstream Stop valve
27