• Engage the locking screw by turning anticlockwise with supplied hex
key until screw is snug against the housing.
• Where heavy fouling is likely to occur we recommend sealing the gap
and locking screw by means of a couple of turns of insulation tape
(figure 2).
• Replacement O’Rings should be type 48x3 N70 (Nitrile)
The O’ring checks are critically important to avoid damage. Any detritus or
damage to the O’rings may result in the housing being flooded which will
almost certainly destroy the electronics.