Home Chamber Instructions

mHBOT Home Chamber
Instructions

Keep this page handy during your rental. Every person who uses the chamber should read it first.

Questions or problems during your rental: call or text (801) 901-0873 or email hello@purebaric.com.

Thank you for renting an mHBOT (mild Hyperbaric Oxygen Therapy) chamber. Please read these instructions completely. Every person using the chamber should understand these safety rules and operating steps.

This document is designed for home users with no prior hyperbaric experience.

Follow all instructions exactly to ensure safe and effective sessions.

1. Important Safety Warnings

Do NOT use the chamber under any circumstances if any of the following apply:

🔴 Ear-Pressure Safety

  • If you cannot equalize your eardrums (pop your ears), DO NOT enter the chamber.
  • If you have a cold, allergies, sinus congestion, ear infection, or recent cold symptoms, wait until you can equalize your ears normally.

🔴 Lung Safety

  • If you have ever had a punctured lung, collapsed lung, or untreated pneumothorax, the chamber cannot be used under any circumstances.

AND

🔴 NEVER attempt to open zippers under pressure

Additional Medical Conditions Requiring Physician Clearance:

  • COPD, emphysema, severe asthma
  • Uncontrolled seizures
  • Uncontrolled high fever
  • Recent ear surgery or ear tubes
  • Pregnancy (consult a physician)
  • Active upper respiratory infection

If unsure, consult your medical professional.

2. Items to Remove Before Entering the Chamber

Before entering, remove everything that could puncture or damage the chamber, or interfere with oxygen flow.

Remove:

  • Shoes
  • Belts with metal points
  • Keys
  • Battery packs, hand warmers, e-cigarettes, red-light devices and other battery-powered electronics. Phones, tablets and laptops are allowed inside the chamber.
  • Sharp jewelry (earrings, rings with points, large bracelets)
  • Hairpins
  • Pocket knives or tools
  • Lighters, matches, or any flame-producing item
  • Sharp objects on clothing (zippers are okay)

Allowed Items:

  • Soft blanket
  • Pillow
  • Water bottle with no sharp edges
  • Tablet/phone with smooth case (not required)

3. Temperature Inside the Chamber

  • The chamber typically stays around ~73°F (23°C).
  • During pressurization, temperature may increase slightly for 5–10 minutes.
  • Temperature returns to normal once full pressure is reached.

4. Session Guidelines

Length

  • Each session: 60–90 minutes (including pressurization)
  • Recommended frequency: At least 3 times per week. Daily is permissible.
  • Maximum use per person per day:

DO NOT exceed 2 sessions, each up to 90 minutes, in one day.

Typical Treatment Regimen

  • 30–60 total hours over 1–3 months, depending on goals.

5. Equipment Overview

Your rental includes:

  1. mHBOT inflatable chamber
  2. Combined Air Compressor + Oxygen Enrichment Unit
  3. Cooler / AC Dehumidifier Unit
  4. Oxygen mask
  5. Mattress pad and cover
  6. Manual pressure release valve
  7. Emergency pressure-release valve (RED button)
  8. Pressure gauges

6. Preparing the Chamber for Use

1. Position the Chamber

  • Place on a flat, clean floor.
  • Ensure ventilation around the compressor machines.
  • Keep away from fireplaces or open flames.
  • Keep out of rooms with pets or unsupervised children.

2. Power On the System

  1. Turn on the Air Pressurizer/Oxygen Concentrator Unit.
  2. Turn on the AC Cooler/Dehumidifier (if included).
  3. Ensure airflow is coming through the oxygen line.

7. Entering the Chamber

A. Entering While Someone Else Closes the Chamber

  1. Step inside carefully.
  2. Lay down comfortably and place the oxygen mask on your face.
  3. Verify oxygen is flowing through the mask.
  4. The operator closes the chamber:

Closing From the Outside

  1. Close the inner zipper fully.
  2. Lay the blue membrane flat between the zippers.
  3. Close the outer zipper, ensuring a complete seal.
  4. Fully close the manual valve.

B. Entering & Closing the Chamber By Yourself (Solo Entry)

  1. Enter the chamber with the blue membrane folded inward.
  2. Pull the outer zipper closed from the inside, ensuring it is fully sealed.
  3. Tuck the blue membrane upward between the two zipper tracks.
  4. Close the inner zipper completely.
  5. Fully close the manual valve.

8. Pressurizing the Chamber

Pressurization takes 5–10 minutes.

Steps:

  1. Ensure your oxygen mask is on.
  2. Ensure the manual valve is closed.
  3. Relax and equalize your ears as pressure increases.
  4. Temperature may rise slightly—this is normal.

Ear Equalization Tips

  • Gently swallow
  • Yawn
  • Move your jaw side to side
  • Perform the Valsalva maneuver (close mouth, pinch nose, blow gently)

IMPORTANT!!!: If you are unable to equalize your ears—stop and depressurize immediately.

9. During the Session

Remain inside 60–90 minutes.

Set a timer.

If you experience any of the following, stop immediately:

  • Sharp ear pain
  • Sharp chest pain
  • Sudden difficulty breathing
  • Oxygen stops flowing
  • Lightheadedness or confusion

If oxygen flow stops:

  • Do NOT stay in the chamber.
  • Depressurize immediately using the manual valve.
  • Exit the chamber only after pressure reaches zero.
  • !!!! NEVER attempt to open zippers under pressure.

10. Emergency Procedure

RED Decompression Valve

If emergency symptoms occur (ear pain, chest pain, panic, breathing difficulty):

  1. Press and HOLD the RED emergency decompression valve.
  2. The chamber will depressurize faster than normal.
  3. Once the chamber softens and pressure reads zero, open the zippers and exit.

Use only in true emergencies.

11. Ending a Session – Proper Depressurization

IMPORTANT:

Do NOT turn off airflow during depressurization. Keep all machines running until after you exit.

Depressurization occurs in 3 stages:

1. Small Turn (¼ turn)

  • Open the manual valve ¼ turn
  • Wait 2 minutes

2. Medium Turn (additional ½ turn)

  • Open another ½ turn
  • Wait 1 minute
  • Your ears may pop again.
  • Pressure gauge will begin dropping.

3. Full Open

  • Turn the manual valve 1 full turn
  • Wait until the chamber walls soften and deflate.
  • Once pressure reaches zero, safely unzip and exit.

12. After Exiting the Chamber

  1. Leave the chamber unzipped to allow airflow and prevent odors.
  2. Turn off:
    • Air Pressurizer / Oxygen Unit
    • AC Cooler / Dehumidifier
  3. Coil hoses neatly; keep off the floor to avoid dust.

13. Oxygen Toxicity – Short Explanation

mHBOT uses mild pressure (1.3–1.5 ATA) and 90–100% oxygen. At this level, oxygen toxicity is extremely rare, but possible if:

  • Sessions exceed 90 minutes
  • User takes more than 2 sessions per day
  • User has untreated lung disease

Signs of Oxygen Toxicity

If any occur, end your session:

  • Tunnel vision
  • Ringing in the ears
  • Facial twitching
  • Nausea
  • Dizziness
  • Irritability or unusual anxiety
  • Chest discomfort

If symptoms continue after exiting, contact a healthcare provider.

14. Maintenance & Care

Daily

  • Inspect zippers for full seal
  • Ensure hoses are fully connected
  • Keep chamber unzipped between sessions

Weekly

  • Wipe interior with mild soap/warm water
  • Vacuum under and around the machine
  • Check that the blue membrane is free of tears

15. Troubleshooting

Pressure not increasing

  • Check manual valve (must be fully closed)
  • Check compressor power
  • Ensure both zippers fully sealed
  • Blue membrane must be flat between zippers

Oxygen not flowing

  • Verify concentrator is ON
  • Check hose connections
  • Ensure mask tubing is not kinked

Chamber feels too warm

  • Ensure AC/Dehumidifier is on
  • Remove heavy blankets
  • Keep chamber out of direct sunlight

Fault Warning – Pressurization Unit

  • Turn off the Pressurization Unit.
  • Check the breaker box in the house to make sure a breaker has not tripped.
  • Reset the breaker to the outlet.
  • Turn the Pressurization Unit back on.