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Summary of Contents for Aqua Lung PHODS
- Page 1 PHODS Portable Helicopter Oxygen Delivery System User’s Manual Rev. 02/20...
- Page 2 NOTICE OF NON-LIABILITY Before the (PHODS) Portable Helicopter Oxygen Delivery System is put to use, it is the responsibility of any user who will use this device to become familiar with the operation and safety aspects of this device.
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Page 3: Table Of Contents
Battery Life and Depletion ....................21 Installing and Replacing Batteries STORING PHODS ........................22 CARE AND MAINTENANCE ....................22 PHODS PRE-FLIGHT CHECKLIST ..................23 ....................23 Check - Oxygen Cylinder / OPC ....................23 Check - Helmet Nasal / Cannula ...................... - Page 4 PHODS User’s Manual PHODS CHECKLIST INSERT ....................25 REGULATOR AND CYLINDER CHANGE OUT ............... 25 TROUBLESHOOTING GUIDE ....................26 OPC AUTO-COMPENSATE ..................... 27 ..................27 Breathing Sensor and Altitude Compensate ..................27 Automatic Respire-Metric Compensate ..................27 Facemask Plenum Volume Compensate OPTIONAL FACEMASK ......................
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Page 5: Glossary Of Terms And Acronyms
When operating the PHODS around high power emitters such as friendly or threat systems, PHODS may stop providing oxygen, or may start pumping oxygen when not expected or required. If the unit is not operational, turning the OPC power OFF then ON will be required. - Page 6 760 millimeters of mercury (mmHg) at a temperature of 70ºF / 21.1ºC. Excess water vapor in the breathing gas can cause ice to form inside the PHODS and interfere with the operation of the system at colder temperatures.
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Page 7: Product Description
PRODUCT DESCRIPTION (PHODS) Portable Helicopter Oxygen Delivery System is an oxygen delivery system that can be attached directly to a crew member’s vest and helmet to support missions at high altitudes. (PHODS) Portable Helicopter Oxygen Delivery System is made up of the following components: •... -
Page 8: Preparation And Set-Up
PHODS User’s Manual PREPARATION AND SET-UP 1. Slowly open the handwheel to pressurize the system. Verify there is no red showing in the valve handwheel window (Figs. 2 & 3). OFF POSITION ON POSITION Figure 2 Figure 3 2. Verify the cylinder is fully charged and the dial indicator is reading in the “GREEN”... - Page 9 3. Ensure the cylinder pocket is installed correctly on the vest using the MOLLE system straps. Install the cylinder into the pocket on the vest (Fig. 5). Figure 5 4. Ensure the OPC pocket is installed correctly on the vest using the MOLLE system straps. Install the OPC into the pocket.
- Page 10 PHODS User’s Manual CAUTION: DO NOT pinch the outlet hose when inserting it into the “out” connector. CAUTION: When removing the tubing, DO NOT pull without first pushing in on the collar, as this will likely damage the connector. 6. Attach the opposite end of the outlet tube to the MOLLE strap on the vest using the MOLLE attachment.
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Page 11: Nasal Cannula Mounting To Helmet
90° fitting on the nasal cannula. Push the hose into the 90° fitting until it stops (Fig. 14). Use only the cannula supplied with PHODS as other cannula’s may not work properly with the OPC. -
Page 12: External Mount
90° fitting on the nasal cannula. Push the hose into the 90° fitting until it stops (Fig. 18). Use only the cannula supplied with PHODS as other cannula’s may not work properly with the OPC. Figure 18... -
Page 13: Opc Modes Of Operation
OPC MODES OF OPERATION The Rotary Mode-Selector knob controls operation of the OPC (Fig. 19). The OPC provides three modes of operation: • ON: Standard Flow Commences above 8,000 ft Pressure Altitude • R/M: Extreme Flow All Altitudes • F20: Enriched Flow All Altitudes (Facemask mode) Figure 19 Notes: •... -
Page 14: R/M: "Reserve/Manual" Mode
PHODS User’s Manual R/M: “Reserve / Manual” Mode (Fig. 21) The R/M (“Reserve/Manual”) setting causes the OPC to immediately begin providing an extremely enriched oxygen flow. Operation commences (and continues) regardless of pressure altitude. Flow amount: Extreme ( Altitude Compensating: Yes... -
Page 15: Oxygen Flow Rates
Oxygen Flow Rates The following graph illustrates the relative rates of oxygen delivery for the various OPC operating modes. (Fig. 23). Figure 23 ON Mode • Oxygen is only delivered above the 8,000 ft pressure altitude (PA) threshold. • Oxygen delivery is suspended when the altitude drops below 8,000 ft PA. •... -
Page 16: Opc Alarms And Alerts
PHODS User’s Manual OPC ALARMS AND ALERTS The following section will cover the OPC Alarm and Alert modes. This information can also be found on the backside of the unit (Fig. 24). Figure 24 The OPC continuously displays its operational STATUS, and also generates various ALARMS and ALERTS to indicate critical warnings or error conditions. -
Page 17: Power-Up Test
The oxygen pulse will be evident from the sound of the valve opening, or can be felt in the nostrils if the cannula has been donned. See PHODS PRE-FLIGHT CHECKLIST. Power-Up Test: Fail (Bad Battery Alarm) (Fig. 27) -
Page 18: Inhalation Event & Oxygen Delivery Notification
PHODS User’s Manual Inhalation Event & Oxygen Delivery Notification (Fig. 29) (Inhalation) Oxygen LED (O ) flashes (~¼ sec minimum) in conjunction with the delivery of an oxygen pulse to the OPC outlet for (Outlet) each valid inhalation event detected. -
Page 19: Flow-Fault Alarm
Figure 33 • REPLACE THE BATTERIES IMMEDIATELY if either of the LOW BATTERY Warnings are received during the PHODS PRE-FLIGHT CHECKLIST. • If operation continues beyond the Second Warning, the batteries will ultimately deplete to the point where the valve ceases firing. At this point, the OPC will no longer be dispensing oxygen (see BATTERY LIFE AND DEPLETION). -
Page 20: Opc Battery
Replace the batteries immediately if any of the LOW BATTERY Alerts are indicated during the PHODS PRE-FLIGHT CHECKLIST. DO NOT embark on a mission with weak batteries. A set of fresh AA alkaline batteries should always be included as part of a “spares” kit. -
Page 21: Battery Life And Depletion
Battery Life and Depletion Battery life depends on many variables. First of all, not all batteries are created equal, so use “good quality” (Name- Brand) alkaline batteries. Batteries (even if unused) have a limited shelf life, so make sure batteries are “fresh”. Even so, “brand new” batteries may be faulty or partially depleted. In addition, the rate at which batteries are depleted is influenced by several factors. -
Page 22: Storing Phods
PHODS User’s Manual STORING PHODS PHODS can be stored under a fairly wide temperature range 185°F (+85°C) to -79.6°F (-62°C). To protect the system from excessive humidity/rain, etc. store the unit in the supplied case. In practical use the following precautions should be observed: The OPC unit, oxygen hoses, nasal cannula’s, etc., should be disconnected from the oxygen supply... -
Page 23: Phods Pre-Flight Checklist
PHODS PRE-FLIGHT CHECKLIST Check - Oxygen Cylinder / OPC 1. Verify all PHODS components are present. 2. Install two new alkaline AA batteries in the OPC. Ensure the battery compartment door is secure. 3. Slowly open the cylinder valve and check that the dial indicator reads in the green. -
Page 24: Check - Helmet / Facemask
PHODS User’s Manual Check - Helmet / Facemask 1. Ensure the nasal cannula is removed from the helmet. 2. Ensure there is a red plug in the other unused 90° fitting on the exhalation side of the mask. 3. Push the open end of the coiled hose into the 90° fitting on the inhalation side of the mask until it stops. -
Page 25: Phods Checklist Insert
PHODS CHECKLIST INSERT (Fig. 36) PHODS Checklist Insert DISPLAY AND ALARM INFORMATION Normal Operation - Green LED single flash per breath during inhalation - When you set the unit to ON mode...you must wear your cannula or facemask. Even though you are below the 8,000 feet threshold, the Apnea alarm is “ON”... -
Page 26: Troubleshooting Guide
WARNING - If after consulting the troubleshooting guide section of this manual the situation is not resolved, immediately return the PHODS system to a qualified technician for inspection or contact an Aqua Lung Technical Advisor. 1. Verify sufficient oxygen is in the cylinder. -
Page 27: Opc Auto-Compensate
OPC AUTO-COMPENSATE Breathing Sensor and Altitude Compensation As absolute atmospheric pressure decreases with altitude, breathing efforts consequently assert less pressure on breathing sensors to the point where inhalation may not be properly detected at higher altitudes. Additionally, breathing effort tends to diminish as the partial pressure of CO also decreases with altitude. -
Page 28: Optional Facemask
PHODS User’s Manual OPTIONAL FACEMASK The oxygen mask design includes the mounting brackets necessary to connect the mask to the HGU-56/P helmet, with or without the maxillofacial shield installed. It may be used with the optional snap adapters to connect the mask to the HGU-84/P helmet without the maxillofacial shield installed. This provides versatility to air crew members allowing them to customize the system according to mission demands. -
Page 29: Phods Technical Specifications
PHODS TECHNICAL SPECIFICATIONS OPC-M2 UNIT Physical Characteristics Width: 3.1 in (79 mm) Height: 5.23 in (130 mm) Depth: 0.95 in (24 mm) Weight (with batteries): 9.3 oz (264 g) Battery Operation Battery Type 1.5 Volt AA Alkaline (2 ea.) Battery Voltage ~ 2.875 VDC... - Page 30 PHODS User’s Manual PHODS TECHNICAL SPECIFICATIONS (continued) Regulator and Cylinder Pressure Rating: 2100 psi (145 BAR) Capacity:1.7 ft (48.36 L) Floodable Volume: 20.4 in (.334 L) Height: 12.00 in (30.48 cm) Cylinder - 9.25 in (23.5 cm) & Regulator - 2.75 in (6.99 cm) Diameter: 2.00 in (5.08 cm)
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Page 31: Maintenance Notes
MAINTENANCE NOTES... - Page 32 PHODS Portable Helicopter Oxygen Delivery System 2340 Cousteau Court • Vista, CA 92081 Phone (760) 597-5000 • Fax (760) 597-4900 www.aqualungmilpro.com ©2020 Aqua Lung...
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