JFD Divex SLS Mk IV, Руководство по эксплуатации и обслуживанию

Страница: 97 / 136

OM131 85
P1939-OM-131 R11 Chapter 4
1. Ensure that the gas cylinders are empty by activating the SLS System and pressing down on
the demand valve diaphragm with the demand valve activating tool (Divex Part No. M2922)
from the Tool and Test Kit.
2. Remove the plug (Fig 4.14, Item 1) taking care to avoid damaging the face of the plug
contacting the burst disc (Fig 4.14, Item 2).
N
OTES
(1) A new burst disc must be fitted every time the plug is removed.
(2) Inspect for burrs, sharp edges etc before replacing the burst disc.
3. Check the condition of the seat (Fig 4.14, Item 3).
4. Tighten the plug (Fig 4.14, Item 1) to the recommended torque setting of 6.78 Nm (5 lb-ft).
5. Charge the gas cylinders to 300 bar after re-assembly and leak test with Snoop (or
equivalent).
4.5.6 Demand regulator body replacement
N
OTE
All normal maintenance can be carried out without having to remove the regulator body from the
SLS System. This should only be carried out if there has been damage to the body.
1. Release the wing nut and remove the thermal regenerator (Fig 3.7, Item 1).
2. Dismantle the regulator (section 4.3.4.4).
3. Using the duct spanner (Divex Part No. M2921B) unscrew the inner sleeve from the duct,
whilst holding the demand regulator until the demand regulator body (Table 4.1, Item 1)
comes off.
4. Replacement is the reverse of the above.
5. Lightly lubricate O-rings before re-assembly using an oxygen compatible lubricant (e.g.
Christo-lube fluorinated grease - Divex Part No SM034).
6. Check the operation of the demand regulator (section 4.3.2.6).
4.5.7 Harness replacement
1. Disconnect the counterlung hoses and inhale / exhale hoses from the Backpack.
2. Remove the counterlung enclosures complete with counterlungs.
3. Ensure that the gas cylinders are empty by activating the SLS System and pressing down on
the demand valve diaphragm with the demand valve activating tool (Divex Part No. M2922)
from the Tool and Test Kit.
4. Remove the two stage regulator (section 4.3.4.2).
5. Remove the single stage regulator (section 4.3.4.3).