Hollis Explorer User Manual - page 70
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MOD (Maximum Operating Depth)
The EXPLORER will warn on the main display if the maximum operating
depth of the unit is exceeded. This MOD is based on three things:
1. A maximum depth of 40 m/130 ft.
2. A maximum depth such that the gas attached to the unit (as measured)
cannot result in a PO
2
exceeding 1.6 bar.
3. When a maximum PO
2
of 1.6 bar is reached.
The EXPLORER will not freeze the user out of operation if these depths
are exceeded. However, the system and diver are operating beyond the
normal recommended conditions and therefore these limits should never
be routinely exceeded.
! WARNING: Exceeding these limits is not condoned by the manu-
facturer and is not a safe diving practice and must be avoided. If an
MOD alarm is seen then you should ascend immediately to a depth
where the alarm is not displayed. This depth reduction should be at
least 6 m/20 ft but could be more if the MOD has been exceeded by
a large amount.
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