Gasmizer Manual - Submarine Manufacturing and Products Ltd
Gasmizer Manual - Submarine Manufacturing and Products Ltd
Gasmizer Manual - Submarine Manufacturing and Products Ltd
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March 2009<br />
Filters/Moisture Separators<br />
5.2.2 Both Moisture Separator 1 <strong>and</strong> Filter 2 have a coalescing filter element. The elements<br />
for these filters are:<br />
Filter 1 – 1 micron -: “AO”<br />
Filter 2 - .01 micron -: “AA”<br />
5.2.3 These filter elements coalesce the small liquid droplets into larger liquid droplets which<br />
drain to the bottom of the housing. It is recommended that filter elements be replaced at<br />
intervals of 500 operating hours.<br />
Float Valve<br />
5.2.4 The operation of the float valve may be seen from Drawing P180581306. If water<br />
accumulates in the float valve body, the float will rise to seal off the outlet, preventing water from<br />
flooding the topside unit. This would occur if, for example, there was a loose fitting on the main<br />
umbilical at the bell. A drain valve allows any accumulated water to be removed.<br />
Oxygen Injection System<br />
5.2.5 Oxygen is bled into Receiver 1 directly from the oxygen panel. Details of the oxygen<br />
system are described in Section 6.1.<br />
Flow Switch<br />
5.2.6 The flow switch senses the gas flow through the system. This switch controls two<br />
functions. First, it activates an indicator in the control panel when flow through the topside unit<br />
stops. In addition it stops oxygen addition in the absence of flow. See Chapter 6.<br />
Back Pressure Regulator<br />
5.2.7 Controls the pressure in the main return umbilical (see Section 4.2.3 for a more<br />
detailed description).<br />
Chap 5 Page 45 of 168 OM002 Rev 5