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Hollis Prism 2 User Manual

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user Manual
REV. 5

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Hollis Prism 2 Specifications

General IconGeneral
FunctionPPO Display 2
PPO range 20.1 ata to 1.9 ata
PPO resolution 20.1 ata
Crush Depth Limit30 ata (~290 msw)
Operating Temperature Range+4 °C to +32 °C
Short-Term (hours) Temperature Range-20 °C to +50 °C
Long-Term Storage Temperature Range+5 °C to +20 °C
Power sourceSupplied by DiveCAN® bus. 3.0 V to 10.0 V
External Connector5-pin DiveCAN® connector (male pins)
Cable Length1 m
Weight and Dimensions IconWeight and Dimensions
Weight0.08 kg
Size - body only (L X D)84 mm X 13.25 mm

Summary

General Safety Statements + Warnings

General Safety

Essential safety precautions for operating the rebreather.

High Pressure Oxygen

Hazards and precautions related to high-pressure oxygen use.

Design and Testing

Information on the rebreather's design, materials, and testing standards.

Computer / Controller-Specific Warnings

Warnings related to the rebreather's electronic control system.

Caustic Material

Safety procedures for handling the caustic CO2 absorbent.

Computer Software

Warnings and advice regarding the rebreather's software functions.

User-Packed Radial Scrubber

Information and warnings about the CO2 scrubber system.

Weighting of the Hollis PRISM 2

Guidance on proper weighting for buoyancy and trim.

Proper Batteries

Specifies the type of batteries required for the rebreather's operation.

Part 1: System Overview

Design Philosophy

Discusses the foundational principles behind the PRISM 2 rebreather.

Getting to Know Your PRISM 2

Introduces the rebreather's components and gas path layout.

Taking Care of Your Oxygen Sensors

Provides guidance on the proper handling and maintenance of oxygen sensors.

The Solenoid + The PID Controller

Details the function and operation of the PID control loop for oxygen.

Fitting Your PRISM 2

Guides the user on how to properly adjust the rebreather for optimal fit.

Stability

Discusses factors affecting diving stability and trim with the rebreather.

Part 2: Setting Up Your PRISM 2 eCCR

An O-Ring Cleaning Primer

Explains the procedure for cleaning and preparing O-rings for rebreather assembly.

Packing the PRISM 2 CO2 Scrubber

Details the process for filling the CO2 scrubber with absorbent material.

Setting Up Your PRISM 2 Using the Checklists

Emphasizes the importance of checklists for rebreather setup and operation.

PRISM 2 Component Inspection

Outlines a comprehensive checklist for inspecting all rebreather components.

PRISM 2 Assembly Order

Provides a step-by-step guide for assembling the rebreather system.

PRISM 2 Operational Checklist Level 1

A basic checklist for pre-dive operational checks and setup verification.

PRISM 2 Operational Checklist Level 2 W/Prompts

An advanced operational checklist with detailed prompts for setup and checks.

PRISM 2 Operational Checklist Level 3 W/Instructions

A comprehensive operational checklist with step-by-step instructions.

The Post-Dive Checklist

A checklist for post-dive procedures, cleaning, and maintenance.

Part 3: In-Water Skills + Drills

Skill #1 Controlled Descent

Teaches how to safely descend while managing loop PO2 and buoyancy.

Skill #2 The In-Water Bubble Check

Details the buddy-assisted check to ensure loop integrity underwater.

Skill #3 DSV & BOV Operation

Explains the procedure for operating the Dive Surface Valve and Bail-Out Valve.

Skill #6 Manual Addition of Diluent

Guides on manually adding diluent to control loop volume and PO2.

Skill #12 Neutral Buoyancy Practice

Focuses on achieving and maintaining neutral buoyancy in closed-circuit diving.

Skill #15 Diving with Off-Board Open Circuit System (Bailout Tank)

Covers the procedure for using an external bailout system during dives.

Skills + Drills Completion List

A list for tracking the completion of various diving skills and drills.

Part 4: Maintenance + Cleaning

Service Facility & You

Outlines required annual service and user maintenance tasks.

Routine Cleaning

Details the regular cleaning procedures for various rebreather components.

Counterlungs + Drains

Explains how to clean counterlungs and drain any collected fluids.

Buoyancy Device

Provides instructions for maintaining the BCD, Wing, and Harness.

Part 5: Approved Products, Capacities, & Specs

The Language of Oxygen

Explains different grades and specifications of oxygen used in diving.

List of Approved Products for Use in Your PRISM 2 Rebreather

Lists approved cleaning agents, batteries, and maintenance products.

Component Capacities + Specs

Details technical specifications like scrubber duration and sensor ranges.

Glossary of Terms

Provides definitions for technical terms used in the manual.

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