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4.2
SEALS
The M
WLR is kept watertight by using o-ring seals and anti-extrusion rings.
IDAS
Double o-ring seals are used at each end of the housing, although the customer should
have no reason to open any seal other than that at the battery end.
A set of spare o-rings is included with the equipment. If an o-ring needs replacing, be
sure to use the correct size. If obtaining further spare o-rings from an alternative
source, be sure to obtain the correct material (signified by the last 4 digits of the o-ring
code number).
O-ring size:
Anti-extrusion ring size: 143 (titanium housing only)
4.2.1
O-RINGS
To help preserve the watertight nature of the equipment, please observe the following
guidelines:
Ensure that all o-rings are free from cuts, abrasions or perishing.
•
Ensure that all-o-rings are free from dirt, grit, sand, hair and other foreign objects.
•
With titanium housings, ensure that an anti-extrusion ring is fitted on the low
•
pressure side of each o-ring (see Section 4.4.2)
Whenever an o-ring seal is opened (e.g. when changing batteries), ensure that a
•
light coating of silicon grease is applied to the o-ring before the seal is closed.
Ensure that all o-ring protected seals are tightened.
•
M
WLR Hardware Manual
IDAS
200-143-4470
Page 16
© Valeport Limited
0730877D.doc
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