TM 10-4320-345-13
3-2. MALFUNCTION INDEX.
Malfunction
Page
1.
No Water Flow to Distribution Nozzles or Elbow Valves ......................................
3-4
2.
Low Water Pressure to Distribution Nozzles or Elbow Valves..............................
3-5
3.
Low Water Pressure in Main Hoseline.................................................................
3-6
4.
Discharge or Suction Hose Leaks (Distribution Point)..........................................
3-8
5.
Discharge or Suction Hose Leaks (Hoseline).......................................................
3-9
6.
Gate Valve Assembly (2-Inch) (D3 or D8) Leaks..................................................
3-10
7.
Gate Valve (2-Inch) (D3 or D8) Stuck or Jammed................................................
3-11
8.
Y Fitting Leaks (Distribution Point).......................................................................
3-12
9.
Elbow Valve (D4 or D5) Leaks.............................................................................
3-13
10.
Elbow Valve (D4 or D5) Stuck or Jammed...........................................................
3-14
11.
Distribution Nozzle (1-1/2 inch) Leaks..................................................................
3-15
12.
Distribution Nozzle (1-1/2 inch) Stuck Open or Closed.........................................
3-16
13.
Pressure Regulating Valve Pressure Not Correct.................................................
3-17
14.
Butterfly Valve (L1, L2, B1, B2, or B3) Leaks.......................................................
3-18
15.
Butterfly Valve (L1, L2, B1, B2, or B3) Stuck Open or Closed..............................
3-19
16.
Gate Valve Assembly (4-inch) (S1) Leaks ...........................................................
3-20
17.
Gate Valve Assembly (4-inch) (S-1) Stuck Open or Closed.................................
3-21
18.
Water Meter Assembly Leaks .............................................................................
3-22
19.
Water Meter Assembly Will Not Operate ............................................................
3-23
20.
Check Valve Leaks..............................................................................................
3-24
21.
Check Valve Stuck Open or Closed.....................................................................
3-25
3-3. TROUBLESHOOTING TABLE
Refer to table 3-1 for Operator Troubleshooting instructions.
Refer to figure 3-1 for component location.
3-2
