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PART III: OPERATION
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
Gas valveversion with SKP2 (built-in pressure stabilizer)
To increase or decrease gas pressure, and therefore gas flow rate, remove the cap T and use
a screwdriver to adjust the regulating screw VR. Turn clockwise to increase the flow rate,
counterclockwise to reduce it.
Fig. 6
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
36
C
VS T(VR)
RP
VB
Fig. 7
VR
T
VSB
Fig. 5
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