User manual
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12.4 REPAIRS
12.4.1 GENERAL
This section describes the repairs that users may carry out personally. Repairs other than those described
here must be carried out by a service technician approved by Interspiro.
12.4.2 REGULATOR
Replacing the O-ring for the high-pressure connection
This O-ring is placed in the connecting nipple on the regulator's high-pressure connection. Normally there
is no need to replace or repair the O-ring between annual inspections, but it can be moved or damaged if
the regulator is removed from the cylinder pack without prior venting of the Divator diving apparatus.
1
. Unscrew the high-pressure connection's nipple using
a 5 mm hexagon wrench. The nipple also functions
as a seal and holder for the regulator lter. Thus,
the nipple must always point downwards during
the removal and assembly procedure. Otherwise
there is a risk of dirt from the lter ending up in
the regulator.
2
. Unscrew the nipple a couple of turns using a 5 mm hexagon wrench to release the O-ring ange so that
a new O-ring can be placed there.
3
. Where necessary, remove the old O-ring and replace with a new one. Do not use any tools when remov-
ing or installing the O-ring as these can damage the sealing surfaces.
4
. Screw the nipple back in place with a 5 mm hexagon wrench.
Comment: Tighten the nipple a moderate amount. However, the nipple must be tightened sufciently as it
may become too loose during use.
5. Check that the O-ring is correctly placed in the groove.