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Amron 8211 Instruction Manual

Compact 2-diver scu air control system
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Instruction Manual
for
Amron International, Inc.
Model 8211
Compact 2-Diver SCU Air Control System
S/N:
1380 Aspen Way, Vista California 92081-8349
United States of America
Phone: (760) 208-6500
Fax (760) 599-3857
email:
sales@amronintl.com
web:
www.amronintl.com
This manual and the information contained herein are provided for use as an operation and
maintenance guide. No license or rights to manufacture, reproduce, or sell either the manual or
articles described herein are given. Amron International, Inc. reserves the right to change
specifications without notice.
Copyright© 2016 Amron International, Inc.

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Summary of Contents for Amron 8211

  • Page 1 This manual and the information contained herein are provided for use as an operation and maintenance guide. No license or rights to manufacture, reproduce, or sell either the manual or articles described herein are given. Amron International, Inc. reserves the right to change specifications without notice.

  • Page 3: Table Of Contents

    Amron Remote Push-to-Talk Module - Model 2821-28 ..............7 Amron Wireless Tender Headset – Model 2829-11 ..............7 DIN Adapter 300 Bar - Amron Part Number HAS-300D ............... 7 4. SAFETY AND REGULATIONS ......................8 Diving Safety and Regulations ...................... 8 Personnel Requirements .......................
  • Page 4 12. DRAWINGS ..........................54 12.1 Parts Locator, Model 8211-400 (Front) ..................55 12.2 Parts Locator, Model 8211-400 (Back) ..................56 12.3 Parts Locator, Model 2825A-8211-28FDW (Diver Communications) ......... 57 12.4 Parts Locator, Model 873-400 (Regulator) .................. 58 8211-UM REV 3.0...
  • Page 5 2825A-8225-400M Front Panel Assembly .................. 64 13.6 Recommended Spare Parts ......................65 14. REPAIR & CALIBRATION LOGS ..................... 66 14.1 Repair and Maintenance Log for Model 8211 ................66 14.2 Gauge Calibration Log Model PER-201FTM88A01 ..............67 8211-UM REV 3.0...

  • Page 6: Introduction And Specifications

    1. INTRODUCTION AND SPECIFICATIONS Introduction The Model 8211 is a portable self-contained, shallow water, two diver high and low pressure air control, communication and pneumo system. The package is a durable co-polymer composite shell providing a convenient, compact, rugged and professional unit.
  • Page 7 8211 COMPACT 2-DIVER SCU USER MANUAL Communications The diver communication system is based on the field proven AMRON Model 2825A. The unit is powered from internal, rechargeable gel-cell batteries; battery charger is provided. Operating time from fully charged battery is approximately 60 hours.

  • Page 8: Air Control Specifications

    Gauge - 0-6000 PSI ................. Accuracy +/- 1.5% Check Valve, prevents reverse inlet flow ..............2 Input Filter, In Line Pre Regulator ..............50 Micron ***Available with optional 300 Bar DIN Adapters, Amron Part No. SAA5300 1.2.2 High Pressure Regulator Outlet Pressure Range .................

  • Page 9: Depth Monitoring (Pneumo) Gauge Specifications

    Regulating Valve, KEL-F Seat ..................2 1.3.2 Outlet Connection O2 Fitting Chrome Plated Brass ................. 2 Communications Specifications 1.4.1 AMCOM II, Model 2825A-8211 Compact 2-Diver SCU Communicator Operating Voltage ................12 V Nominal Maximum) Minimum -18 Power ..................Rechargeable Battery Or External Power ..................

  • Page 10: Enclosure Specifications

    8211 COMPACT 2-DIVER SCU USER MANUAL Enclosure Specifications 1.5.1 Case Material Co-polymer composite material including carrying handle & latches with stainless steel hardware 1.5.2 Yoke Storage HP hoses and yokes remain attached to unit and are stored on inside of lid.

  • Page 11: Warranty & Service Policy

    90 days from date of shipment. Amron’s obligations under this warranty are limited to the repair of, or replacement of materials at Amron’s discretion. This warranty shall not cover defects which are the result of misuse, negligence, accident, repair, or alterations.

  • Page 12: Options And Accessories

    One headset comes with communicators ordered with the /28A options but additional headset can be ordered to allow other crew member to monitor communications. DIN Adapter 300 Bar - Amron Part Number HAS-300D Converts a standard Amron CGA850 yoke (3000 PSI) to 300 Bar DIN (4500 PSI) use. 8211-UM REV 3.0...

  • Page 13: Safety And Regulations

    WARNING: DO NOT USE THE 8211 FOR THE FOLLOWING: Mixed gas diving operations with an oxygen level greater than 26%. Oxygen or oxygen enriched breathing mixtures above 26%. The Model 8211 is not designed or intended for these applications. 8211-UM REV 3.0...

  • Page 14: Personnel Requirements

    Each dive team member shall have the experience or training necessary to perform assigned tasks in a safe and healthful manner. The person operating the Model 8211 must be trained in the proper operating procedures and emergency operating procedures. It is the responsibility of the designated person in charge of the diving operation to be on site at all times.

  • Page 15: Calibration, Service And Inspection

    8211 COMPACT 2-DIVER SCU USER MANUAL NOTE: OSHA regulations require a decompression chamber capable of recompressing the diver at the surface to a minimum of 165 FSW (6 ATA) shall be available at the dive location for a surface supplied air diving to depths deeper than 100 FSW.

  • Page 16: Controls & Connections

    8211 COMPACT 2-DIVER SCU USER MANUAL 5. CONTROLS & CONNECTIONS Before using the Model 8211, familiarize yourself with its operating controls and connections. For simplicity, the controls and connections are divided into three categories. The categories are Air Control, Pneumo, and Communications.
  • Page 17 The Amron CGA850 input yokes are standard with bleed valves and color-coded 6-ft. high-pressure hose whips. The CGA850 input yokes are limited to maximum pressures of 3000 PSI and fit standard SCUBA bottle valves.

  • Page 18: Depth Monitoring

    8211 COMPACT 2-DIVER SCU USER MANUAL Pressure relief valve, factory set for 285 PSI, vents excess pressure to atmosphere. Vent is located between diver output connections. Depth Monitoring The Pneumo Fathometer section is used to measure the diver’s depth. Pneumo readings are made by pressurizing the diver’s pneumo hose.

  • Page 19: Air Control Front Panel - Communications, Model 8211

    8211 COMPACT 2-DIVER SCU USER MANUAL Air Control Front Panel - Communications, Model 8211 8211-UM REV 3.0...

  • Page 20: Communications

    8211 COMPACT 2-DIVER SCU USER MANUAL Communications The communication system provides two-way communications with the divers. A high power speaker provides ample volume in noisy environments. Before using the diver communicator, the operator should be familiar with all the controls and connections. While reading this manual, you will find capitalized words such as PANEL SPEAKER.
  • Page 21 This may, for some situations, make for a better overall diving experience. If the tender requires more mobility at the dive site, the Amron Model 2821-28 Remote Push-to-Talk Module can be used to extend the headset cable. It includes a push-to- talk button on a clip-on belt module and comes standard with 25 feet (7.6 meters) of...
  • Page 22 8211 COMPACT 2-DIVER SCU USER MANUAL 5.4.3 Diver Controls (separate controls for each diver) This control adjusts the level from the diver’s MICROPHONE VOLUME microphone to the tender and other diver. EARPHONE VOLUME – This control adjusts the level to the diver’s earphone.
  • Page 23 The EXTERNAL BATTERY input can be used to recharge the communicator rechargeable sealed lead acid battery. It is strongly advised to use the provided Amron External Charger, Model 2823-603, to charge or operate the communicator. This charger has been designed with the necessary electrical isolation to prevent dangerous currents from the AC lines from reaching the diver.

  • Page 24: Communicator Front Panel, Model 2825A-8211

    8211 COMPACT 2-DIVER SCU USER MANUAL Communicator Front Panel, Model 2825A-8211 8211-UM REV 3.0...

  • Page 25: Pre-Dive Procedures

    PRE-DIVE PROCEDURES Pre-Dive Set-Up Place Model 8211 on flat surface that can support the unit. Select a working area which is secure, stable, convenient, and suitable for use during the period of the dive. Open unit and remove both yokes and color coded high pressure hose whips from the storage position.

  • Page 26: Pre-Dive Pneumo Test

    Procedure for checking the pneumo gauges: Pressurize the LP section of the Model 8211; reduce the output pressure of the regulator to a pressure less than 100 PSI. Open the diver output valve momentarily to reduce the pressure and check the action of the regulator.

  • Page 27: Pre-Dive Testing Communications

    Low Pressure Supply Test LP supply with low pressure compressor. Note: Adjust diver air supply pressure at compressor. The 8211 Compact 2-Diver SCU LP supply system bypasses the regulator, therefore, cannot control air pressure entering system or the pressure to the diver.

  • Page 28: Operating Procedures

    8211 COMPACT 2-DIVER SCU USER MANUAL 7. OPERATING PROCEDURES Low Pressure Breathing Air (Primary Supply) Low Pressure Compressor (Primary supply), High Pressure (Backup). In this mode of operation the diver’s breathing air is being supplied by an LP compressor, the HP supply is use as a back-up supply.

  • Page 29: Pre-Operation Checklist

    8211 COMPACT 2-DIVER SCU USER MANUAL Another method of changing bottles is to leave both valves on the system in the “ON” position. Use the SCUBA bottle valves as the ON/OFF control for selecting which bottle is in use. This reduces the number of valves, which must be open and closed for each change of bottles.

  • Page 30: Pneumo Readings

    8211 COMPACT 2-DIVER SCU USER MANUAL Pneumo Readings During the dive, the tender shall monitor the diver’s depth, recording the depth and time at depth. The procedure for measuring depth is as follows: Advise the diver that a pneumo reading is to be taken.

  • Page 31: Diver Communications

    DIVER MICROPHONE binding post jack on the communicator as shown in the wiring drawing in figure 3. If the umbilical uses a banana plug (AMRON PN 14001B), simply insert the plug into the binding post jack. Verify that it is firmly and completely seated. This may require that the external plastic nut be tightened down.
  • Page 32 PUSH-TO-TALK BUTTON to allow the diver to communicate. When using the Amron Model 2405-28 Push-to-Talk Microphone, the tender presses the push-to-talk button on the side of the microphone and speaks clearly at a distance of between 1 and 2 inches (25 to 51 mm).

  • Page 33: Diagram, Set-Up Instructions (Figure 3)

    8211 COMPACT 2-DIVER SCU USER MANUAL Diagram, Set-Up Instructions (Figure 3) 8211-UM REV 3.0...

  • Page 34: Full Duplex (4-Wire) Operation (Refer To Figure 4)

    Turn speaker off to avoid acoustic feedback. Operation with speaker is possible by extending tender’s headset away from the speaker. Use AMRON Model 2822-28 headset extension cable (25 foot). Note: When operating with a standby diver who does not have his helmet / hat on, acoustic feedback (squeal) may occur.

  • Page 35: Diagram, Full Duplex 4-Wire Connection Model 2825-8225 (Figure 4)

    8211 COMPACT 2-DIVER SCU USER MANUAL Diagram, FULL DUPLEX 4-Wire connection Model 2825-8225 (Figure 4) 8211-UM REV 3.0...

  • Page 36: Full Duplex What, Why And How

    8211 COMPACT 2-DIVER SCU USER MANUAL 7.10 FULL DUPLEX What, Why and How? Amron has designed the AMCOM Full Duplex (4-WIRE) mode from the ground up, taking advantage of state-of-the-art electronics technology to provide a superior hard-wire communication experience. Full Duplex (4-Wire) mode has the following advantages: ...
  • Page 37 On the surface, a tender using a headset may get some acoustic feedback via the PANEL SPEAKER. The solution is to put some distance between the tender and the PANEL SPEAKER by using the Amron Model 2822-28 Walk-and- Talk Module accessory. Alternatively, the PANEL SPEAKER can be turned off using the SPEAKER SWITCH located on the front panel.
  • Page 38 ISN'T ROUND ROBIN THE SAME THING? In Round Robin communication systems, each diver is connected using a 4-Wire cable like the Amron Full Duplex (4-Wire) mode. This is where the similarities end. In Round Robin systems all the microphones are connected together in parallel and connected to the microphone input of the communicator.
  • Page 39 8211 COMPACT 2-DIVER SCU USER MANUAL 7.10.4 HOW DO YOU USE FULL DUPLEX (4-WIRE) In order to use Amron's Full Duplex (4-Wire) mode, you need the following items:  An AMCOM series diver communicator  A good quality dive communication cable with four wires (two twisted wire pairs) like Amron's CC1 ...

  • Page 40: To Operate And/Or Check Out Full Duplex

    8211 COMPACT 2-DIVER SCU USER MANUAL With the AMCOM diver communicators you can mix 2-Wire and Full Duplex (4-Wire) modes of operation. For example, the diver can operate on Full Duplex (4-Wire) mode while the tender operates in 2-Wire mode. The tender can use the panel speaker to listen to the diver and talk to the diver by pressing the push-to-talk button and using the panel speaker as a microphone.

  • Page 41: Theory Of Operation

    HP-1 and HP-2, high-pressure input, has a maximum input pressure limit of 3000 PSI when using standard CGA850 SCUBA yokes with bleed valves and color coded hose protectors. Installing the optional 300 Bar DIN Adapter (Amron Part No. SAA5300) will increase the units maximum input pressure limit to 4500 PSI. Simply remove CGA850 yoke nut and yoke from bleeder body, screw on the 300 Bar DIN adapter and tighten with a wrench.
  • Page 42 Place the 8211 Compact, 2-Diver SCU Air Control and the bottles in a warm location. This can be a temporary shelter with a portable heater.
  • Page 43 8211 COMPACT 2-DIVER SCU USER MANUAL The pressure is then read on a very accurate gauge. The dial of the gauge is calibrated in feet of seawater rather than pounds per square inch (PSI), eliminating the need to convert from PSI to FSW.

  • Page 44: Maintenance

    8211 COMPACT 2-DIVER SCU USER MANUAL 9. MAINTENANCE Review of Scheduled Maintenance The inherent quality of your Model 8211 will provide years of continuous failure-free service if properly used and maintained. Before and after each dive: do functional test, clean and inspect for damage.

  • Page 45: Complete The Above Tests Plus The Following

    Every 12 months Complete the above tests plus the following: Remove high-pressure valve stems, inspect, clean, lubricate (use Christolube grease, Amron part No. MCG-111-20Z) and install. Check valve seat, threads, packing material for signs of wear or deterioration, replace if necessary.

  • Page 46: Troubleshooting And Repair

    8211 COMPACT 2-DIVER SCU USER MANUAL 10. TROUBLESHOOTING AND REPAIR 10.1 General Information Normal shop tools and procedures apply for all repairs. During this section when you are instructed to remove a part or make an adjustment, you are first to remove all pressure from the system, or as a minimum from the section you are working on 10.1.1...
  • Page 47 Viton seat and spring. When checking for leaks, be sure to check valve body to end of fitting. 10.2.4 HP Filter This is a replaceable element. The Maintenance Kit is available from Amron and contains the element, body gasket, and retainer spring. Check with soap and water to ensure filter is not leaking. 10.2.5...
  • Page 48 8211 COMPACT 2-DIVER SCU USER MANUAL Remove from CAP (Item 3) and maintain order since they will need to be installed in reverse order. Remove SEAL and STOP RING (Item 17 & 19), Remove SEAT (Item 5), Remove SEAL (Item 15), Remove PISTON & SEAL (Item 4 &...

  • Page 49: Depth Monitoring

    The valves are repairable. They use Teflon seats which can be replaced. A maintenance kit 802065-4 is available from Amron. To replace, remove valve from system. Remove end pieces from valve, remove valve stem packing nut and remove stem.
  • Page 50 8211 COMPACT 2-DIVER SCU USER MANUAL 10.4.2 Quick Full Duplex Check Identify headset microphone lead and headset earphone lead. Plug into dual banana jack adapters (usually the microphone plug is red). Plug in headset microphone to “Tender” “Microphone” (input) and headset earphone to “Tender”...
  • Page 51 8211 COMPACT 2-DIVER SCU USER MANUAL Move headstet earphone plug from “Microphone” (input) “Diver 2” to “Earphone” (output) “Diver 2”. Talk into headset. There should be plenty of volume. This checks earphone output for Diver 2, Full Duplex. Tender’s Speaker Down-link Check 10.4.6...
  • Page 52 8211 COMPACT 2-DIVER SCU USER MANUAL 10.5 Problems and Their Possible Causes 10.5.1 Unit Does Not Operate Check to see that unit is turned on (speaker and headset switch). Check that battery condition is okay, (battery condition indicator). Check to see that connections are proper;...
  • Page 53 8211 COMPACT 2-DIVER SCU USER MANUAL 10.5.7 Push-to-Talk Does Not Function but Tender Hears Diver (2-Wire) Check connection to tender headset microphone if used. Check battery condition indicator to be steady green. The first function to fail because of low batteries is the actuation of the push-to-talk function.

  • Page 54: Reference Material

    8211 COMPACT 2-DIVER SCU USER MANUAL 11. REFERENCE MATERIAL 11.1 Diving Log, U.S Navy (Chart) 8211-UM REV 3.0...

  • Page 55: Repetitive Dive Worksheet

    8211 COMPACT 2-DIVER SCU USER MANUAL 11.2 Repetitive Dive Worksheet 8211-UM REV 3.0...

  • Page 56: No Decompression Limits

    8211 COMPACT 2-DIVER SCU USER MANUAL 11.3 No Decompression Limits (Non-repetitive Dives Only) U.S. Navy Diving Manual (Air Decompression) Depth FSW Bottom Time NOTE: OSHA Regulations Require: A decompression chamber capable of recompressing the Diver at the surface to a minimum of 165 FSW (6ATA) and shall be available at the dive location for: A) surface supplied air-diving to depths deeper than 100 FSW.

  • Page 57: Gauge Pressure For Depth Of Seawater & Fresh Water

    8211 COMPACT 2-DIVER SCU USER MANUAL 11.4 Gauge Pressure for Depth of Seawater & Fresh Water Gauge Pressure in PSI Depth In Feet of Fresh Water Seawater 4.33 4.45 8.66 8.90 12.99 13.35 17.32 17.80 21.65 22.25 25.98 26.70 30.31 31.10...

  • Page 58: Equivalent Depths Of Seawater & Fresh Water

    8211 COMPACT 2-DIVER SCU USER MANUAL 11.5 Equivalent Depths of Seawater & Fresh Water Depth Equivalent Depth Feet of Seawater Feet of Fresh Water 10.30 20.30 30.90 41.20 51.50 61.80 72.10 82.40 92.70 103.00 113.30 123.60 133.90 144.20 154.50 164.80 175.10...

  • Page 59: Drawings

    8211 COMPACT 2-DIVER SCU USER MANUAL 12. DRAWINGS General The following drawings illustrate the electrical and mechanical details of the diver communication unit. The corresponding parts lists for each drawing are detailed in the parts lists section. 8211-UM REV 3.0...

  • Page 60: Parts Locator, Model 8211-400 (Front)

    8211 COMPACT 2-DIVER SCU USER MANUAL 12.1 Parts Locator, Model 8211-400 (Front) 8211-UM REV 3.0...

  • Page 61: Parts Locator, Model 8211-400 (Back)

    8211 COMPACT 2-DIVER SCU USER MANUAL 12.2 Parts Locator, Model 8211-400 (Back) 8211-UM REV 3.0...

  • Page 62: Parts Locator, Model 2825A-8211-28Fdw (Diver Communications)

    8211 COMPACT 2-DIVER SCU USER MANUAL 12.3 Parts Locator, Model 2825A-8211-28FDW (Diver Communications) 8211-UM REV 3.0...

  • Page 63: Parts Locator, Model 873-400 (Regulator)

    8211 COMPACT 2-DIVER SCU USER MANUAL 12.4 Parts Locator, Model 873-400 (Regulator) 8211-UM REV 3.0...

  • Page 64: Parts Lists

    8211 COMPACT 2-DIVER SCU USER MANUAL 13. PARTS LISTS General The following parts lists include all mechanical and electrical parts. The following information will be useful in interpreting data which is not self-explanatory. The parts lists in this manual are for the current model of Diver Communicator as of the printing date.

  • Page 65: Air Control System, Model 8211

    8211 COMPACT 2-DIVER SCU USER MANUAL 13.1 Air Control System, Model 8211 Reference Part No. Description 8211-300 Case Assembly 8211-400 Panel Assembly 8225-500 Hose & Yoke Assembly 2825A-8211 Radio Assembly 2405-28 Hand Held Microphone PTT 8211-UM Manual for Model 8211...

  • Page 66: 8211-400 Air Control Panel Assembly

    8211 COMPACT 2-DIVER SCU USER MANUAL 13.2 8211-400 Air Control Panel Assembly Reference Part No. Description 345-0014-01 SCU Main Panel PER-201FTM88A01 4.5 IN. Depth Gauge GH2BZ-B-4-4 Female Bulkhead 4F-B6LJ-BP Ball Valve CBZ-B-6-4 Male Elbow 71172520600 2-1/2 Pressure Gauge 4M-V4AK-B-YEL Needle Valve, Angle...

  • Page 67: 8211-400 Air Control Panel Assembly (Con't)

    8211 COMPACT 2-DIVER SCU USER MANUAL 13.3 8211-400 Air Control Panel Assembly (con’t) Reference Part No. Description HP-B-1/4 Plug, Brass MBZ-B-4-4-4 Female Run Tee, Brass FBZ-B-4-4 Connector Male GBZ-B-4-4 Female Connector DBZ-B-6-6 Female Elbow DBZ-B-4-4 Female Elbow 6TTM4BR Male Branch Tee...

  • Page 68: Regulator, Pressure Reducing

    8211 COMPACT 2-DIVER SCU USER MANUAL 13.4 Regulator, Pressure Reducing Reference Part No. Description Poppet Assy Body Piston 1035-1 Seat (Non-Vented) Spring Guide Spring Guide 378-2 Adjusting Screw 379-30 Knob 379-37 Bearing Plate 379-38 Bearing 379-5 Spring 876-24 Seal 876-15...

  • Page 69: 2825A-8225-400M Front Panel Assembly

    8211 COMPACT 2-DIVER SCU USER MANUAL 13.5 2825A-8225-400M Front Panel Assembly Reference Part No. Description *NOT AVAILABLE FOR SALE Panel, Front Amcom II PBSWITCH Switch, Push Button SPST (mom) 7580K6 Switch, Toggle SPST P16NP-10K Potentiometer, 10K ohms with knobs 1498-102...

  • Page 70: Recommended Spare Parts

    8211 COMPACT 2-DIVER SCU USER MANUAL 13.6 Recommended Spare Parts Reference Part No. Description 802045 Repair Kit, for P/N 4M-C4L-1/3-SS 802065-4 Repair Kit, for P/N B6LJ Repair Kit, for P/N 4FV6AKVSS-B2500-KRY, 822188-SS 4FV6AKVSS-R2500-KRY KIT-F4-50-V Repair Kit, for P/N 4M4Z-F4L-50-SS 802040...

  • Page 71: Repair & Calibration Logs

    8211 COMPACT 2-DIVER SCU USER MANUAL 14. REPAIR & CALIBRATION LOGS 14.1 Repair and Maintenance Log for Model 8211 Serial Number: Date unit was placed in service: Date of Description of Service Serviced By Service 8211-UM REV 3.0...

  • Page 72: Gauge Calibration Log Model Per-201Ftm88A01

    8211 COMPACT 2-DIVER SCU USER MANUAL 14.2 Gauge Calibration Log Model PER-201FTM88A01 Serial Number: Date unit was place in service: Calibration Serial Number Comments Calibrated By Date 8211-UM REV 3.0...

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