Series 111 Accumulators
16
Maintenance
4. Open the nitrogen bottle valve. Check the nitrogen bottle pressure
gage on the regulator. (The bottle must contain sufficient pressure to
provide an adequate gas volume.)
5. Monitor the regulator output pressure gage and adjust the regulator
output pressure valve to the required level.
Avoid rapid and extreme pressure transitions.
Rapid flow rates with pressure differentials of more than 2.1 MPa (300 psi)
across the input check valve can damage the valve seal(s).
Do not allow rapid flow rates. Open the regulator shut-off valve only far enough to
permit a gradual transfer of gas.
6. Slowly open the regulator shut-off valve until gas is heard escaping
from the accumulator charging kit bleed valve. Allow gas to slowly
escape for approximately ten seconds, then close the bleed valve.
Immediately close the regulator shut-off valve before the pressure
reading on either the high or low charging kit pressure gage exceeds
the pressure level of the accumulator.
7. Open the locknut (or open the chuck valve for a core-type valve).
Slowly open the regulator shut-off valve until the pressure indicator on
either the high or low charging kit pressure gage begins to rise. When
the pressure is at the required pressure level (recorded on the
accumulator), close the regulator shut-off valve.
8. Close the locknut (or close the chuck valve for a core type valve).
9. Open the bleed valve on the accumulator charging kit and remove the
chuck valve from the accumulator.
10. Install the valve stem cap and protective cover. Close the valve on the
nitrogen bottle.
CAUTION
