Fayat Group Bomag MPH 122-2, Operating & Maintenance Instructions, Page: 90 / 198

Operation of binder dosing system
BOMAG 90 MPH 122-2
Fig. 189
l
Close the middle spraying section (n) (Fig.
188) once the binder pump pressure gauge (d)
(Fig. 189) and the spraying bar pressure
gauge (a) show increasing pressure.
Fig. 190
l
Set the selector switch for spraying/circulation
(k) (Fig. 190) to position "Circulation".
l
Set the binder quantity potentiometer (m) to
zero flow.
l
Set the reaction water flow quantity potentiom-
eter (l) to stage 5.
l
Open the spraying sections (n).
l
Set the selector switch for spraying/circulation
(k) to position "Spraying".
Fig. 191
l
Close the spraying sections (n) (Fig. 190)
when the reaction water pressure gauge (b)
(Fig. 191) has reached a pressure of at least 4
bar.
l
Set the selector switch for spraying/circulation
(k) (Fig. 190) to position "Circulation".
Starting work
Fig. 192
l
Pre-select the sections (n) (Fig. 192) on the
spray bar.
l
Set the binder quantity potentiometer (m) to
the desired flow.
l
Set the reaction water quantity potentiometer
(l) to the desired flow.
l
Start milling.
l
Set the selector switch for spraying/circulation
(k) to position "Spraying".
l
If necessary regulate the flow rates with the
binder flow rate potentiometer (m).and the re-
action water flow rate potentiometer (l).