1. Visually check PRREG for obvious cracks or other physical damage.Warning:never use a faulty regulator.
2. Ensure that On/Off manual valve (2) is in the Off state (fully clockwise).Do not over-tighten.
3. Ensure that gas pressure transducer (5) is securely connected. If you did not purchase the pressure
transducer, then ensure that the pressure transducer port is sealed with the plug provided.
4. Connect your desired gas output connector at (6), make sure that it is blocked at this stage, using either a
valve or blocker.
5. Connect PRREG to the carbon fiber cylinder by manually turning the threaded connector (3) into its
corresponding female socket at the cylinder neck.There is no need to apply excessive force at the end of the
turns.The carbon fiber cylinder is now ready for gas filling.Note:an ID16 CS3 Viton O-ring (provided) may or
may not be needed depending on your carbon fiber cylinder thread design.
1. Prepare the necessary adapter to link (14) to your Hydrogen source.This adapter is not provided due to the
different connector standards of Hydrogen source cylinders worldwide.
Warning:the pressure gauge provided has amaximum pressure of 25MPa.It is assumed that the Hydrogen
source will be standard industrial steel cylinder with pressure of less than 20MPa and that filling the carbon
fiber cylinder will be by means of pressure cascade.If you are connecting directly to a gas booster pump or
higher source pressures, change the pressure gauge or bypass it completely.At any time, do not operate
higher than 35MPa.
2. Connect (13) to (9).
3. Open the refueling cap (7). Keep it in asafe place, do not lose it.Connect (10) into the refueling port of
PRREG.Do not use excessive force at the end of the turns.
4. Turn on your Hydrogen source.
5. Slowly turn On the manual valve (2) by turning it anti-clockwise.Hissing sound can be heard as gas rushes in
from the source into the carbon fiber cylinder. Continue turning the valve anti-clockwise until it is fully opened
(i.e. cannot be turned anymore).Do not use excessive force at the end of the turns.
6. The gas will now fill into the carbon fiber cylinder until it reaches equilibrium with the source.
7. If you are using agas booster pump, it can now be turned on.
8. At the end of the filling process, turn off your Hydrogen source.Close the manual valve (2) by turning it fully
clockwise.Caution: at this point, there is still high pressure gas remaining in the refueling hose.Remove your
blocker at (6) to release the remaining gas through the PRREG low pressure gas outlet port.
9. Once all the gas is released, fully remove (10) from the refueling port and put back the refueling cap (7).
10. The carbon fiber cylinder is now ready for usage.
3OPERATING PROCEDURES
Filling the Carbon Fiber Cylinder
SETTING UP PRREG
CHAPTER 3 | OPERATING PROCEDURES
