JFD Divex SLS Mk IV, Operation And Maintenance Manual

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OM131 65
P1939-OM-131 R11 Chapter 4
4.3.2.9 Perform Leak Test
1. Perform a leak check on the SLS System Backpack as follows:
a. Connect a single hose between the inhale and exhale hose spigots.
b. Ensure that the scrubber door is in place and closed tight.
c. Connect a 10 bar supply to the single stage regulator hose.
d. Ensure that the gas cylinders are charged to a minimum pressure of 20 bar.
e. Check for leaks by submerging the SLS System in a tank of water.
2. If no further maintenance is to be performed, repack the SLS System ready for diving as
follows:
a. Reload the actuation cable assembly (section 3.4.4).
b. Recharge the gas cylinders with the appropriate heliox gas mix for the diving depth (section
3.1.1).
c. Install a refilled scrubber canister and check the door seal (section 3.1.2 and section 3.3.1).
d. Replace and secure the outer door.
4.3.3 Six monthly maintenance procedures
4.3.3.1 Perform monthly maintenance
Carry out the monthly maintenance schedule in accordance with section 4.3.2 of this Manual.
4.3.3.2 Visual inspection of gas cylinders
N
OTE
For use in UK waters, the current legislation for cylinders is detailed in SI 1981:399. This requires
for; a six (6) monthly internal examination by competent personnel, a two (2) yearly hydraulic test in
accordance with BS 5430:1990 and a two (2) yearly pressure leak test in accordance with BS
5430:1990.