Amerex 16303 - Manual (Page 5)

4
TROUBLESHOOTING GUIDE
WARNING: Determine the source of a leak before the extinguisher is depressurized. The
extinguisher must be completely depressurized before any attempt is made to devalve it and
correct a leakage problem. To depressurize
– hold the extinguisher in an inverted position and
slowly squeeze the discharge handle. Some water remaining in the downtube will be expelled
so care should be taken in the area being used for depressurizing. Thoroughly clean all valve
parts after depressurization and valve removal.
PROBLEM CORRECTIVE ACTION
1. Leak at collar o-ring Remove valve assembly, clean collar
(knurled) nut thoroughly and install new
collar o-ring. Lubricate with Visilox V-711.
2. Leak through valve Check valve stem seating area for scratches
or foreign matter. Clean seating area with a
tooth brush and soft cloth. Install new valve
stem assembly.
3. Leak around gauge Remove gauge*, clean threads and reinstall
using Teflon tape on the gauge threads.
4. Defective gauge Remove defective gauge* an install the
proper Amerex pressure gauge using Teflon
tape on the gauge threads.
5. Leak in the cylinder Contact Amerex if under warranty,
otherwise mark "REJECTED" and remove
from service or return to owner.
* Pressure gauge threads are coated with a special epoxy at the
factory. For easy removal, soak the valve assembly in hot water
(180°F) for two to four minutes. Remove gauge with a thin 7/16"
open end wrench.