Gasmizer Manual - Submarine Manufacturing and Products Ltd

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