Commissioning The Regulator With Manual Reset - PIETRO FIORENTINI FE Series Manual

7.4.1 - COMMISSIONING THE REGULATOR WITH MANUAL RESET

To commission the regulator (A), with and without excess flow shut-off device, proceed as indicated in Tab. 7.37.:
Step Action
1 Slowly open the shut-off valve upstream of the regulator (A) to feed it.
2 Unscrew the protection cap (B) of the reset knob (C).
3
Engage the knob (C) in the cap (B) through the special built-in hook.
Slowly pull the knob (C) with the cap (B) until the slam-shut device engages (the knob must not remain inside
the lid (E) of the slam-shut valve).
4
NOTE!
The greater the resistance encountered when pulling the knob (C), the higher the pressure up-
stream of the gearbox (A).
Press the reset button (D) of the excess flow lock-up device, keeping the knob (C) pulled, by about 2/3".
5 NOTE!
Keep the knob (C) pulled until the downstream pressure is stable.
6 Put the protection cap (B) back in place.
Check that the slam-shut valve for maximum downstream pressure remains triggered.
NOTE!
7
The slam-shut valve for maximum downstream pressure is triggered if the knob (C) is visible in
the transparent area of the protection cap (B).
A
59
E
Fig. 7.12. Commissioning with manual reset
LOW-PRESSURE GAS REGULATOR
B
C
D
C
Armato
B
Intervenuto
| COMMISSIONING
Use, maintenance and warning manual
Tab. 7.37.
| REV. 00
EN