Pre-Issue Checklist - Aqua Lung SEA-4500 User Manual

14

PRE-ISSUE CHECKLIST

Before each use, the unit must be given a thorough visual inspection and
functional test by a qualified technician. NEVER use a SEA-4500 which shows
signs of damage, leakage or substandard performance until it has received
inspection and service from a qualified technician.
1. Carefully inspect the medium pressure hose to ensure it is securely connected
into its respective port on the first stage and onto the second stage. Inspect the
length of the hose to ensure that it is not blistered, cut or otherwise damaged.
Inspect the hose fittings for any signs of corrosion.
2. Visually inspect the entire system for any external damage, such as dents,
gouges, cracks or severe external corrosion.
3. While the SEA-4500 valve is
completely shut and the system is
depressurized, inspect the pressure
gauge to ensure that it is securely
fastened to the first stage. Closely
examine the pressure gauge to
ensure that it reads zero (Fig. 12).
CAUTION:
valve is shut and the system is depressurized, DO NOT attempt
to use the system until it has received inspection and service
from a qualified technician.
CAUTION:
first checking to ensure that the MP hose and pressure gauge
are securely fastened to the first stage.
4. Turn the SEA-4500 valve handwheel counter-clockwise until it is completely
open. In the open position, the red indicator ring is not visible in the handwheel.
If the pressure gauge does not read zero when the
DO NOT attempt to open the SEA-4500 valve without
SEA-4500 User's Manual
"0 PSI"
Figure 12