Operations Manual Perdix
Manual DocRev B
89
For quick battery changes, the un-powered time interval is not significant. However, if
the battery is removed shortly after a dive and then remains out for a long period, then
residual tissue loading will remain when the battery is replaced. If you have not been
diving for more than 4 days, it is safe to reset the tissues to their default levels (System
Setup->Reset to Defaults->Tissues Only). Otherwise, just leave the tissues as is and
accept the slightly higher conservatism for the next dive.
After a battery change the restored tissues are shown (with shortcut to reset)
Resetting the deco tissues sets them to saturated with air at the
current atmospheric pressure
If at time of battery replacement any tissue is below saturated with air at the current
pressure, then that tissue is brought up to being saturated with air. This might happen
after a decompression dive that used 100% O2, where the faster tissues are often
completely depleted of inert gas loading. Bringing such tissues back up to saturated
with air after a battery change is the most conservative approach.
When deco tissues are reset, the following are reset:
Inert gas tissue loadings set to saturated with air at current atmospheric pressure
CNS Oxygen Toxicity set to 0%
Surface Interval time set to 0
All VPM-B values set to default levels
