Nitrogen Recharge Procedure - Fluke Calibration 4322-SYS-NAVAIR Service Manual

4. Rinse cylinder completely with warm tap water (or soft water if the tap water is
hard).
5. Steam clean and dry the cylinder with clean compressed air.
To prevent damage to the product, make sure the cylinder is
completely dry before installing the regulator.

Nitrogen Recharge Procedure

Use the procedure in this section to recharge the Cylinder and or follow all local fill
procedures.
To prevent injury to personnel or damage to equipment:
•
Do not over pressurize the Nitrogen Cylinder. Maximum
pressure of the Cylinder is 2,000 psig.
•
Never fill a Cylinder that has the safety relief device altered
in any manner.
•
Never fill a Cylinder that is outside its periodic inspection
and retest period.
•
Never modify the Cylinder in any way or add attachments
that are not authorized. Unauthorized modifications are
illegal and could render the cylinder dangerous.
•
Before the Cylinder is recharged, visually inspect the
Cylinder as instructed in "Visual Inspection" section. Verify
that the Cylinder has a working pressure (PW) stamped on
the crown that will not be exceeded by the filling apparatus.
Recharge the Cylinder with nitrogen as follows (see Figure 6-1):
1. Connect a filling regulator with a built-in safety relief valve set to 2,000 psi to the fill
adapter located in the Accessory Kit. Connect the nitrogen source to the filling
regulator.
2. Connect the fill adapter to the Cylinder. Remove the Nitrogen Cylinder regulator if it
is installed. See Figure 6-1.
To prevent injury to personnel or damage to equipment, do not
over pressurize the Nitrogen Cylinder. Maximum pressure of
the Cylinder is 2,000 psig.
3. Close the bleed valve.
4. Open the Cylinder main shutoff.
5. Open the pressure valve on the nitrogen source and slowly fill the Cylinder to
2,000 psig or less.
6. Once the Cylinder reads 2,000 psig or is at the desired pressure <2,000 psig, close the
pressure valve on the nitrogen source and close the Cylinder Main Shutoff.
Caution
Warning
Warning
Nitrogen Cylinder Maintenance

Nitrogen Recharge Procedure

6
6-5