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Troubleshooting
Swift GPS: How To Guide

Swift GPS: How To Guide

December 03, 2025

This helpful guide walks you through the full setup process for the Swift GPS, including a pre-dive checklist and outlines how to get the strongest possible GPS signal before and after every dive—so your logs are always accurate. 

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Rebreather Troubleshooting Tip #3: Calibration

Rebreather Troubleshooting Tip #3: Calibration

July 30, 2025

Calibration of rebreather electronics is one of the most critical processes when setting a rebreather to go diving. Always refer to the official rebreather manual provided by the manufacturer, as there are different processes depending on the specific rebreather, but here are some tips to help you get started.

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Rebreather Troubleshooting Tip #2: Unit Keeps Turning ON

Rebreather Troubleshooting Tip #2: Unit Keeps Turning ON

July 24, 2025

There are several possible root causes for a peripheral unit (Petrel, Nerd, LED HUD) that turns on by itself or cannot be turned off. Following these tips will help isolate the source of the issue so you can get back in the water as quickly as possible.

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Rebreather Troubleshooting Tip #1: Isolate the Issue

Rebreather Troubleshooting Tip #1: Isolate the Issue

July 23, 2025

Rebreathers are complex devices that rely on numerous components to function correctly. When you encounter a problem, it’s valuable to isolate the issue to a specific component before seeking service. The idea is to verify whether a certain issue occurs with different peripherals or different head electronics.

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DiveCAN and AK 4-pin Cable Maintenance Guidelines

DiveCAN and AK 4-pin Cable Maintenance Guidelines

May 02, 2025

The DiveCAN five pin connectors and the analogue four pin connectors are durable and reliable so long as a few steps are taken to care for them. To ensure the longest life and most reliable operation of DiveCAN connectors, please observe the following 
maintenance advice.

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Petrel 3 Product Service Update

Petrel 3 Product Service Update

September 12, 2024

The latest update shows how to identify Petrel 3 units that have been reworked or built after the rework to comply with the service update.

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depth sensor maintenance

Depth Sensor Maintenance: Maximize Lifespan & Performance

August 09, 2024
Avoid these three situations to prevent unnecessary damage to any dive computer's depth sensor: cleaning, rinsing, or drying with high pressure, thermal stress, and chemical insult.
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Petrel/NERD Battery Cap Improvements

Petrel/NERD Battery Cap Improvements

May 13, 2016
To improve the sealing performance and O-ring life span, the battery compartment O-ring gland design has been changed from a crushed gland to a rad...
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Battery Contact Issues on Petrel 1

Battery Contact Issues on Petrel 1

February 27, 2015
Shearwater has a strong commitment to quality. In the year following the launch of the Petrel 1 dive computer, we received reports of divers who we...
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