(1) Inspect gage (5) for damage.
(2) Inspect threads of studs, nuts, and tube connections for damage.
(3) Inspect pipe fitting, nuts, and washers for possible damage.
e. Repair or Replace.
(1) Replace damaged tube assembly or pipe fitting.
(2) Replace damaged U-bracket (4).
(3) Replace damaged or unserviceable pressure gage (5).
(4) Send damaged pressure gage to Direct Support Maintenance.
(5) Replace damaged nuts, bolts, screws, and washers.
f. Installation. (Figure 2-76)
(1) Install elbow (7) in gage (5).
(2) Insert gage (5) in mounting hole in panel (6).
(3) Slip U-bracket (4) over mounting studs of gage (5).
(4) Install two lockwashers (3) and two nuts (2) on gage mounting studs.
(5) Connect pressure tube coupling nut (1) to elbow (7).
(6) Test pressure tube fitting for leaks.
2-68. R.O. VESSELS, CARTRIDGE FILTER, AND MULTIMEDIA FILTER GAGES (psid).
a. General. The R.O. VESSELS gage shows the difference in pressure between the input and output of the
R.O. vessels. The gage is secured to the control panel by three screws, three flat washers, three lockwashers,
and three nuts. This paragraph covers removal, cleaning, inspection, replacement, and installation of gages.
b. Removal. (Figure 2-77)
ROWPU piping and equipment can contain extremely high
pressure during and after operation. If this pressure is not
relieved before working on these parts or equipment, serious
injury or death can occur. Be sure to open all drains and vents
before beginning any disassembly.
(1) Remove both tubing nuts (1) from 90° elbow (5).
(2) Remove three nuts (2) and three lockwashers (3) from three screws (4).
(3) Remove three screws (4).
(4) Remove two 90° piping elbows (5) from meter.
(5) Remove gage (6) from front of control panel (7).
(1) Remove dirt from meter cutout in panel.
(2) Remove dirt and corrosion from the threads of the screws, nuts, and fittings.