Unigas C120A, Installation Manual

Page: 35 / 116

PART III: OPERATION
35
Adjusting the gas valves group
Multibloc MB-DLE
The multibloc unit is a compact unit consisting of two valves, gas pressure switch, pres-
sure stabilizer and gas filter.
The valve is adjusted by means of the
RP regulator after slackening the locking screw VB
by a number of turns. By unscrewing the regulator RP the valve opens, screwing the valve
closes. To set the fast opening remove cover T , reverse it upside down and use it as a tool
to rotate screw VR . Clockwise rotation reduces start flow rate, anticlockwise rotation incre-
ases it.
Do not use a screwdriver on the screw
VR !
The pressure stabilizer is adjusted by operating the screw VS located under the cover C .
By screwing down the pressure is increased and by unscrewing it is reduced.
Note: the screw
VSB must be removed only in case of replacemente of the coil.
Key
1 Electrical connection for valves
2 Operation display (optional)
3 Pressure governor closing tap
4 Start setting cap
5 Hydraulic brake and rate regulator
6 Coil
7 Test point connection G 1/8
8 Test point connection G 1/8 downstream of valve 1, on both sides
9 Output flange
10 Test point connection M4 downstream of valve 2
11 Gas flow direction
12 Test connection G 1/8 downstream of valve 1, on both sides
13 Vent nozzle pressure regulator
14 Filter (below cover)
15 Input flange
17 Pressure switch
18 Pressure switch electric connection
C
VS
T(VR)
RP
VB
VSB
5
6
7
8
9
12
11
10
11
5
11
5
7
11 13
15
7
17
18
1
2
3
4
14