PerkinElmer Photovac MicroFID, User Manual

Page: 37 / 170

Introduction
7. Release the knurled collar and allow it to slide up to its
original position.
8. Turn the 3­way valve on the refill adapter so that it once again
points towards the cylinder and watch the pressure increase on
the MicroFID Contents Gauge.
WARNING
DO NOT leave the MicroFID unattended during the filling procedure!
It is possible to overfill the cylinder and damage MicroFID.
9. The contents pressure MUST NOT exceed 2400 psig and the
cylinder valve must be closed before this occurs.
10. When the contents gauge on MicroFID indicates Full
(approximately 1600­1800 psig), turn the 3­way valve to point
away from the cylinder. This will stop the flow of gas to
MicroFID. High pressure gas trapped in the flexible hose will
be vented. A check valve in the MicroFID prevents gas in the
reservoir from escaping.
11. Close the cylinder valve on the tank of hydrogen.
12. AFTER relieving the gas pressure in the hose, disconnect it
from MicroFID. Pull the knurled collar down and extract the
fitting.
The internal cylinder is now full and will provide approximately 11
hours of operation.
If you have not used MicroFID for six months or longer, empty the
hydrogen cylinder and refill it before beginning operation. See
Emptying the Hydrogen Cylinder on page 110 for more details.
Overview
35