Pre-Dive Procedures; Overall Check; Checking O-Rings - INTERSPIRO RS4 Benutzerhandbuch

Pre-dive procedures

Overall check

1. Make sure that the RS4 regulator is clean and free from sand and/or
debris from previous use.
2. Inspect the regulator to detect if it has any signs of damage. A damaged or
defective regulator must be replaced or repaired by an Interspiro certified
service technician.
3. Check all hoses by pulling and bending them while inspecting for damage,
cracks and discolouration. If the high pressure hose to the pressure gauge
is found to be defective or damaged, it must be replaced by an Interspiro
certified service technician.
4. Check that the protective band is attached to the relief valve otherwise
replace it with a new protective band (part number 346 190 053, 10-pack).
WARNING
The air loss caused by a break in the dry-suit hose is just as
great as that caused by a break in the breathing hose.
The RS4 regulator has a restrictive orifice in the high pressure hose that limits
the air flow to the pressure gauge. The restriction protects the user and the
equipment if the hose burst.

Checking O-rings

O-rings that are exposed to sunlight, salt water, chemicals (including mild
detergents), and ozone suffer ageing and may become defective.
1. Check all visible O-rings.
2. Replace all cracked or damaged O-rings.
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RS4