POSEIDON Besea Series

Questions and Answers

K
kylebaileyAug 4, 2025
What to do if bubbles are coming from the inflator or APRV/wing joint of POSEIDON Besea?
- A
  Anthony RussellAug 4, 2025
  If you notice bubbles coming from the inflator or APRV/wing joint of your POSEIDON Diving Instrument, it could be due to a loose valve nut. Check all valve nuts and tighten them firmly by hand if necessary. Alternatively, it may indicate an internal leakage, in which case you should immediately terminate your dive and ascent, and have the Besea serviced by an authorized service center.
D
Darren ReynoldsAug 11, 2025
Why is the inflator continuously feeding the wing on my POSEIDON Diving Instrument?
- J
  Janice HuffAug 11, 2025
  If the inflator of your POSEIDON Diving Instrument is continuously feeding the wing, immediately disconnect the hose from the inflator and deflate the bladder to avoid a rapid ascent. Terminate your dive and ascent. This issue may arise if the inflation mechanism is frozen, possibly due to high water content in the breathing gas, so have your gas examined. It can also be caused by a damaged o-ring or a jammed mechanism due to salt/calcium formation, in which case have the Besea serviced by an authorized service center.
J
jonathan74Aug 19, 2025
What to do if it is impossible to fill the bladder of POSEIDON Diving Instrument?
- D
  Dale ChangAug 19, 2025
  If you cannot fill the bladder of your POSEIDON Diving Instrument, it could be due to several reasons. First, ensure that everything is properly connected. If that's not the issue, the feed button might be frozen or jammed by salt/calcium formation, so terminate your dive and ascent and have the Besea serviced. Note that it is possible to inflate the bladder orally. Also, check if the APRV covers are loose and tighten them if necessary. Finally, overly tightened ClamRetract™ cords could be the cause, requiring service by an authorized service center.
M
Matthew WrightAug 27, 2025
What to do if bubbles are coming from the bladder of POSEIDON Besea Diving Instrument?
- A
  amy53Aug 27, 2025
  If bubbles are coming from the bladder of your POSEIDON Diving Instrument, it may be that the inner PU bladder is punctured. Immediately terminate your dive and ascent. Have the Besea serviced by an authorized service centre.

Summary

Approvals and Certifications

General Safety Regulations

Pre-Use Safety Warnings

Essential safety warnings and precautions to read before using the Besea product.

Lifejacket vs. BCD Clarification

Clarification that the Besea is not a lifejacket and does not guarantee head-up position.

Training and Component Inspection

Requirement for certified instructor training and pre-dive inspection of components.

Weight System Safety for Ascent

Ensuring weight belts are not entangled for safe emergency ascent.

Emergency Ascent Procedure Practice

Mandatory practice of weight dropping for emergency ascent in safe conditions.

Product Modification Prohibition

Prohibition of product modifications, with responsibility transfer to the modifier.

Pre-Dive Training and Practice

Necessity of proper dive training and practice of Besea procedures.

Consequences of Improper Use

Warning that improper use can lead to serious injury or death.

Depth Limitations and Inflation

Note on exceeding EN 1809 requirements for bladder inflation at depths greater than 50m.

Nitrox Safety Regulations

Oxygen Cleaning Requirements

Mandatory cleaning for oxygen use if Besea is not oxygen cleaned or used with other gases.

Cylinder Valve Operation

Breathing Gas Mixture Approval

Approval for breathing gas mixtures with specific oxygen content and pO2 limits.

Nitrox Depth and Exposure Limits

Need for special training for Nitrox depth and exposure time limits.

Product Descriptions

Harness Besea Sport

Harness Besea Advanced

Besea W50 Wing

Size Adjustment

SpineAdjust Torso Sizing

Waist Belt Hips Sizing

Cylinder Mounting

Donning

Pre-Dive Checks

Pre-Dive Inspection Checklist

Essential checks before diving for safety and proper function.

Diving

Using Besea During Dive

Inhaling Gases Warning

Warning against inhaling gases from the Besea bladder.

Contamination and Valve Issues

Risks of contamination affecting valve function and potential consequences.

After Dive

Maintenance

Technical Data

Troubleshooting

Bubbles from Inflator;APRV;Joint

Troubleshooting for bubbles from the inflator or APRV/wing joint.

Bubbles from Bladder

Troubleshooting for bubbles originating from the bladder itself.

Inflator Continuously Feeding Wing

Diagnosing and resolving issues where the inflator continuously feeds the wing.

Impossible to Fill Bladder

Troubleshooting steps for an unresponsive inflator or valve system.

Servicing

Annual Inspection Requirement

Requirement for yearly inspection by POSEIDON authorised service locations.

Nitrox Servicing Procedures