C.I.B. UNIGAS
- M03993CH
31
Fig. 27
10 Set the atomising air pressure switch
PA
(Fig. 28) at 0.5 bar
11 Set the pilot gas pressure switch
PG
(Fig. 29) at 50 mbar.
12 The nozzle supply pressure is already factory-set and must not be changed. Only if necessary, adjust the supply pressure as fol-
lows (see related paragraph); read the pressure on the oil pressure gauge on Fig. 32 and act on the Suntec TV governor adjusting
screw
VR
(see Fig. 31 and description on page 23) as to get the nozzle pressure at 2bar (see step 9). If the required flow rate is
not reached, increase the feeding pressure by means of the Suntec TV governor (see picture below).
13 in order to get the maximum oil flow rate, adjust the pressure (reading its value on the oil pressure gauge (Fig. 32): checking always the
combustion parameters, the adjustment is to be performed by means of the
SV
adjusting cam screw (Fig. 33) when the cam has reached
the high flame position.
14 The atomising air flow rate and pressure can be adjusted with the
VA
screw (Fig. 30). Too low a pressure produces poor atomising
with smoke in the flue. A too high a pressure produces instability and the flame can be cut off. A too low pressure produces poor
atomising with smoke in the flue.
15 To adjust the
comburent air flow rate in the high flame stage
, loose the
RA
nut and screw
VRA
as to get the desired air flow
rate: moving the rod
TR
towards the air damper shaft, the air damper opens and consequently the air flow rate increases, moving it
Fig. 28 - Atomising air pressure switch
Fig. 29 - Gas pressure switch
Fig. 30 - Atomising air flow rate adjustment
Fig. 31 - Suntec TV governor
Fig. 32 - Oil pressure governor
Fig. 33
oil pressure gauge
compressed air pressure
gauge
PA
PG
VA
VR
VR
oil pressure gauge
compressed air pressure gauge
SV
