Unigas RX1025.1, Manual, Page: 18 / 80

PART II: INSTALLATION
18
Siemens VGD20.. e VGD40..
Components and position of pressure switches
Connection of actuator SKP2... to gas train
Siemens SKP2.. (pressure governor)
- Connect the reference gas pipe ( TP in figure; 8mm-external size pipe supplied loose), to the gas pressure nipples placed on the gas
pipe, downstream the gas valves: gas pressure must be measured at a distance that must be at least 5 times the pipe size.
- Leave the blowhole free ( SA in figure). Should the spring fitted not permit satisfactory regulation, ask one of our service centres for a
suitable replacement.
- D: pressure adjustment spring seat
version with SKP2 (built-in pressure stabilizer)Siemens VGD../VRD.. SKPx5 (Auxiliary-optional micro
switch)Gas valve
If the auxiliary microswitch (POC) is required, a dedicated actuator, different from the one usually supplied, must be ordered. The con-
nection is shown in the figure.
WARNING: removing the four screws BS causes the device to be unserviceable!
3
5
2
1
4
6
6
8
SKP15
SKP25
SKP15
SKP25
5
2
1
3
4
7
1 PGMIN minimum gas pressure switch
2 PGMIN minimum gas pressure switch (alternative
to 1)
3 PGCP leakage control gas pressure switch
4 PGMAX maximum gas pressure switch
5 Actuator with integrated pressure stabiliser
6 On-Off actuator
7 Valve body (Threaded)
8 Valve body (Flange)
min. 5 Ø
Ø
TP
BS
SA
D
SKP2
Valve
drive
AG
A64
Valve
drive
AG
A65
AGA64 - Valve drivePlug connection ON-OFF
AGA65 - End of strokePlug connection POC
End of stroke (POC)
The connection plug of the POC is different from that of the ON-OFF
drive