1. Introduction
This manual provides essential information for the proper use, maintenance, and care of your SEAC PX100 230 INT Regulator. The SEAC PX100 230 INT is a high-performance scuba diving regulator designed for reliability and comfort, featuring a simple piston first stage, adjustable Venturi effect, and a durable braided coated hose. It is optimized for cold water diving, performing effectively below 10°C (50°F). All components are proudly Made in Italy, ensuring quality and precision. Please read this manual thoroughly before using the regulator to ensure safe and optimal performance.
2. Safety Information
- Professional Training Required: This regulator is intended for use by certified divers only. Do not attempt to use this equipment without proper training and certification from a recognized diving agency.
- Read Before Use: Always read and understand this entire instruction manual before attempting to use, assemble, or disassemble the regulator.
- Regular Maintenance: Diving equipment requires regular professional maintenance. Follow the recommended service intervals outlined in this manual and by SEAC.
- Pre-Dive Checks: Always perform thorough pre-dive checks on all your equipment, including the regulator, before every dive.
- Emergency Procedures: Be familiar with emergency procedures for regulator malfunction and out-of-air situations.
- Cold Water Use: While optimized for cold water, be aware of the increased risk of free-flow in extremely cold conditions.
3. Setup
Proper setup of your SEAC PX100 230 INT Regulator is crucial for safe diving. Follow these steps carefully:
- Inspect Components: Before assembly, visually inspect all components of the first stage, second stage, and hoses for any signs of damage, wear, or contamination. Ensure O-rings are present and in good condition.
- Connect First Stage to Cylinder Valve:
- Ensure the cylinder valve O-ring is in place and undamaged.
- Align the first stage (INT connection) with the cylinder valve.
- Hand-tighten the first stage yoke screw securely onto the cylinder valve. Do not overtighten.
- Connect Hoses:
- Connect the primary second stage hose to one of the low-pressure (LP) ports on the first stage.
- Connect the alternate air source (octopus) hose to another LP port.
- Connect the pressure gauge (SPG) hose to the high-pressure (HP) port on the first stage. The PX100 first stage has 1 HP port and 5 LP ports.
- Ensure all hose connections are hand-tightened securely.
- Pressurize the System: Slowly open the cylinder valve. Listen for any leaks. Observe the pressure gauge to ensure it reads the cylinder pressure accurately.
- Test Second Stages: Briefly inhale from both the primary and alternate second stages to confirm they deliver air smoothly. Depress the purge buttons to ensure they function correctly.

4. Operating the Regulator
Once properly set up, operating the SEAC PX100 230 INT Regulator is straightforward. Always remember to breathe calmly and naturally.
- Breathing from the Second Stage: Place the mouthpiece of the primary second stage into your mouth. Take a few shallow breaths to ensure air delivery is smooth and effortless.
- Adjustable Venturi Effect (Dive / Pre Dive): The PX100 second stage features an adjustable Venturi control. This lever allows you to switch between 'Dive' and 'Pre Dive' modes.
- Pre Dive Mode: Use this setting on the surface or when entering the water. It helps prevent accidental free-flow, especially when the regulator is not in your mouth or is facing into a current.
- Dive Mode: Once underwater and ready to breathe, switch to 'Dive' mode. This setting optimizes air delivery for easier breathing during your dive.
- Purge Button: The purge button on the front of the second stage allows you to clear water from the regulator. Press it firmly to release a burst of air.
- Monitoring Air Supply: Regularly check your submersible pressure gauge (SPG) to monitor your remaining air supply. Plan your dive to ensure you have sufficient air for ascent and safety stops.
5. Maintenance
Proper maintenance extends the life of your SEAC PX100 230 INT Regulator and ensures its reliable performance. Always follow these guidelines:
- Rinsing After Each Dive:
- Ensure the first stage dust cap is securely in place before rinsing.
- Rinse the entire regulator thoroughly with fresh, clean water. Submerge the second stages and gently depress the purge buttons to flush out any salt or debris.
- Do not press the purge button on the second stage while the first stage is not pressurized and submerged, as this can allow water to enter the first stage.
- Drying: Allow the regulator to air dry completely in a shaded, well-ventilated area. Avoid direct sunlight or excessive heat.
- Storage: Store your regulator in a cool, dry place, away from direct sunlight, chemicals, and extreme temperatures. Avoid kinking hoses.
- Professional Servicing: Your SEAC PX100 230 INT Regulator requires periodic professional servicing by an authorized SEAC technician. Refer to your warranty card or contact SEAC for recommended service intervals, typically annually or every 100 dives, whichever comes first.
- Avoid Unauthorized Repairs: Do not attempt to disassemble or repair the regulator yourself. This can void your warranty and compromise safety.
6. Troubleshooting
This section addresses common issues you might encounter with your regulator. For any problems not listed or if solutions do not resolve the issue, seek professional assistance.
| Problem | Possible Cause | Solution |
|---|---|---|
| Regulator free-flows (continuously releases air) | Second stage Venturi in 'Dive' mode on surface; debris in second stage; worn seat. | Switch Venturi to 'Pre Dive' mode; gently tap second stage; if persistent, seek professional service. |
| Hard breathing or restricted airflow | Low cylinder pressure; clogged filter; internal component issue. | Check cylinder pressure; if sufficient, seek professional service immediately. |
| Air leak from first stage connection | Damaged cylinder valve O-ring; loose yoke screw. | Replace cylinder valve O-ring; tighten yoke screw. If leak persists, do not dive and seek service. |
| Pressure gauge reads incorrectly | Faulty gauge; hose issue. | Compare with another gauge if possible. Seek professional service for gauge or hose replacement. |
7. Specifications
| Feature | Specification |
|---|---|
| Model Name | PX 100 INT 230 BAR |
| First Stage Type | Simple Piston |
| HP Ports | 1 |
| LP Ports | 5 |
| Second Stage Features | Adjustable Venturi effect (Dive / Pre Dive) |
| Hose Type | Braided Coated Hose |
| Material | CHROMED BRASS, POLYAMMIDE, POLYURETHANE, STAINLESS STEEL, SILICONE RUBBER, NBR |
| Color | Black |
| Item Weight | 4.54 g |
| Package Weight | 1.17 kg |
| Included Components | 1st and 2nd stage regulator |
| Manufacturer | SEAC |
| Part Number | 0350095000003A |
8. Warranty
The SEAC PX100 230 INT Regulator is covered by a 1-year manufacturer's warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. It does not cover damage caused by misuse, improper maintenance, unauthorized repairs, or normal wear and tear. To make a warranty claim, please retain your proof of purchase and contact an authorized SEAC dealer or SEAC customer service. Adherence to recommended service intervals by an authorized technician is often a condition of warranty validity.
9. Support
For further assistance, technical support, or to locate an authorized service center for your SEAC PX100 230 INT Regulator, please contact SEAC customer service or visit the official SEAC website. Always ensure that any servicing or repairs are performed by qualified and authorized SEAC technicians to maintain the integrity and safety of your diving equipment.