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Ocean Technology Systems Guardian, Owner'S Manual

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- NOTICE -

This manual and the information contained herein are provided for use as 
a maintenance and operation guide. No license or rights to manufacture, 
produce, and/or sell either the manual or articles described herein are given. 
Undersea Systems International, Inc., dba Ocean Technology Systems 

hereinafter referred to as OTS, reserves the right to change specifications 

without notice. We recommend that all users read and fully understand this 
manual before using a Guardian full-face mask (GFFM).

All statements, technical information, and recommendations herein are 
based on tests we believe to be reliable, but the accuracy or completeness 
thereof is not guaranteed; and the following is made in lieu of all warranties, 
expressed or implied, including the implied warranties of merchantability 

and fitness for purpose: Seller’s and Manufacturer’s only obligation shall 

be to replace such quantity of the product proved to be defective. Before 
using, the user shall determine the suitability of the product for intended 
use, and the user assumes all risk and liability whatsoever in connection 
therewith. Neither Seller nor Manufacturer shall be liable either in tort or 
in contract for any loss or damage—direct, incidental, or consequential—
arising from the use of or the inability to use the product. No statement or 
recommendation not contained herein shall have any force or effect unless 

it is in an agreement signed by officers of the Seller and Manufacturer.

- IMPORTANT SAFETY NOTICE -

(Please read before using product)

It is absolutely essential that all divers are certified divers in good 

standing, properly trained, equipped, and fully understand this user’s 

manual before attempting to use the Guardian FFM. While the Guardian 

does provide the diver with outstanding underwater environmental 

protection, 

it does not change or eliminate the potential hazards of 

diving!

Refer to the Library page of our Web site, www.otscomm.com for a list of 

any changes made to this manual since its publication.

© Copyright 2009, 2010, 2014 by Undersea Systems International, Inc., dba

Ocean Technology Systems

. All rights reserved.

Specifications are subject to change without prior notice.

506129-000 (F)

Summary of Contents for Guardian

Page 1: ...OCEAN TECHNOLOGY SYSTEMS Guardian Full Face Mask Owner s Manual ...

Page 2: ...of the product for intended use and the user assumes all risk and liability whatsoever in connection therewith Neither Seller nor Manufacturer shall be liable either in tort or in contract for any loss or damage direct incidental or consequential arising from the use of or the inability to use the product No statement or recommendation not contained herein shall have any force or effect unless it ...

Page 3: ...k Interface and Air Flow 7 Warning Note 8 Head Harness Assembly 8 Pre Dive Set Up And Inspection 8 Regulator Set Up and Hose Configuration 8 Warning Note 9 Equalizing Assembly 9 Installation of Communications 10 Preparation and Adjustment 11 Warning Note 11 Donning 11 Overall Safety Inspection 11 Hoods and Seals 11 Donning and Adjustment 12 Diving The Guardian 13 Pre Dive 13 Training Emergency Pro...

Page 4: ...9 Figure 10 The Blanking Plug 10 Figure 11 Fit Mask Skirt onto Skin Not Hood 11 Figure 12 Open Lower Straps and Bring Over Head 12 Figure 13 Snug Evenly 12 Figure 14 To Remove Mask Grasp Bottom and Thumb Lower Buckle Tabs 15 Figure 15 Guardian FFM Exploded View 18 Figure 16 Guardian Regulator Isometric View 18 Figure 17 GFFM with Buddy Phone 19 Figure 18 GFFM with EM OTS 2 20 TABLE OF TABLES Table...

Page 5: ...well or better than anything on the market Today OTS is proud to provide you with this advanced diving apparatus and hope you enjoy it as much as we do All who intend to use this FFM must read this manual carefully prior to preparing and using this equipment Training must be obtained before using this or any other advanced diving equipment Become familiar with emergency procedures and ensure you a...

Page 6: ...g and practice prior to diving it in an open water environment Proper maintenance and care of this equipment is essential for safe operation Have your Guardian full face mask and other equipment serviced on a regular basis This should be at least annually possibly more if your equipment is used extensively or in environments that would require decontamination Do not dive any equipment that is not ...

Page 7: ...ection from contaminated water that standard equipment cannot This configuration is commonly seen in light commercial and public safety diving Physiological Considerations The Guardian FFM protects the diver in other ways as well If for any reason a diver were to become unconscious underwater the Guardian FFM is able to maintain a breathable airspace in front of the diver s nose and mouth assistin...

Page 8: ...n FFM provides an additional margin of safety to diving Proper use of communications to relay a problem combined with the security of the five strap harness system securing the Guardian FFM adds a degree of safety to diving not found in standard equipment Anatomy of the Guardian Full Face Mask Front Aspect KEY 1 Upper Visor Clamp 2 Ambient Breathing Valve ABV 3 Oral Nasal Cavity 4 Lower Clamp 5 Pu...

Page 9: ...gn ensures the Guardian FFM will fit virtually every type face small to large Practically eliminated is the burping at the temples found in other masks Dives of extended lengths are made more gratifying with a properly fitting mask Additionally the tabs to the buckles are designed to minimize any damage resulting from improper donning of the mask These tabs have button holed buckles meaning if the...

Page 10: ...athing off of a scuba bottle With the ABV in the open position and on the surface the diver is able to breathe ambient air without removing the FFM There is a check valve on the inside of the ABV which allows ambient air to enter the valve only air is exhaled out through the regulator This also prevents air from escaping through the ABV should it be open underwater It is extremely important that t...

Page 11: ... nasal cavity and inhaled by the diver The diver then exhales through the diaphragm assembly of the regulator resulting in a one way flow of air through the system There is virtually no push pull of inhaled and exhaled air resulting in extremely efficient CO2 washout CO2 is what triggers your urge to breathe Any accumulation of CO2 can cause an increased rate of breathing thus higher air consumpti...

Page 12: ...mbly The Guardian FFM uses a five point strapping system Figure 5 Buckles are mounted by a button securely on tabs that are a part of the skirt They are replaced easily by stretching the tab and either removing or replacing the button end of the nylon buckle PRE DIVE SET UP AND INSPECTION Regulator Set Up and Hose Configuration Install the second stage low pressure hose to the first stage regulato...

Page 13: ...e now able to insert the regulator into the regulator port of the lower clamp and test breathe the mask Equalizing Assembly The Guardian FFM has an equalizing block assembly and kit that allows the diver to equalize the ears This kit consists of an adjustable slotted rubber base equalizing block mounted on a wire form Figure 8 along with several inserts of varying thickness Figure 9 that secure to...

Page 14: ...gned to accept Ocean Technology Systems OTS communications There are two primary communication systems designed specifically for the mask The Buddy Phone see Buddy Phone Installation Instructions on page 19 and the OTS earphone and microphone assembly see EM OTS 2 Installation Instructions on page 20 The Buddy Phone is a stand alone communication system designed with the transceiver mounted on the...

Page 15: ...Inspection Prior to donning your mask examine the complete assembly as you would the rest of your gear to ensure that it is in dive ready condition You the diver are ultimately responsible for your equipment Confirm that your air is turned on and examine the regulator assembly for leaks Check all buckles strap assembly visor clamp assembly visor skirt and second stage regulator and quick disconnec...

Page 16: ... the mask and harness over your head Figure 12 Ensure the harness is straight and the center is low on the back of your head Hold the mask to your face with one hand and snug the lower jaw straps one at a time switching hands to accommodate tightening the other Pull the straps toward the back of your head not out to the side Attempt to tighten the straps evenly to prevent pulling the back of the h...

Page 17: ...ask training videos for demonstration DIVING THE GUARDIAN Pre Dive Once you have donned your mask and ensured your air is on check the system by closing the ABV The regulator should breathe easily and you will feel the air as it flows through the visor area of the mask There should be very little exhalation resistance Prior to entering the water close the ABV and check your submersible pressure ga...

Page 18: ... these tabs loosening and rotating the mask forward and back over your head Exhale slowly do not hold your breath Obtain your alternate air source clear the regulator and breathe normally You can now don a spare mask or terminate the dive without one This skill takes practice and preparation Keep working on your bailout technique until you are comfortable and it becomes second nature Another impor...

Page 19: ...g your breath and enjoy your dive If your mask requires adjustment while diving snug the straps as required Be careful not to overtighten Upon surfacing you may open the ABV to breathe surface air if necessary The mask will need to be completely out of the water for the ABV to function You may need to inflate your BCD and swim on your back if a surface swim is required It is recommended that you r...

Page 20: ...to allow for any trapped water to drain to the top of the skirt Wipe out the excess water and allow the mask to air dry prior to storing in the mask bag If traveling requires you to stow a damp mask remove it from the bag as soon as possible and allow it to dry completely to prevent any mold and mildew from forming Rinse the regulator as you normally would your regulator assembly Flush the regulat...

Page 21: ...000 DIAPHRAGM ONE WAY VALVE OTS FFM 7 872004 000 SEAT ONE WAY VALVE MASK Regulator Each consumer removable item of the Guardian Regulator is listed in Table 3 and shown in Figure 16 on page 18 Table 3 Guardian Regulator Part List Item Part Number Description 1 604009 000 LPSH 32 LOW PRESSURE HOSE SECOND STAGE 32 2 940002 000 GUARDIAN REGULATOR BLACK TRIM 940002 010 GUARDIAN REGULATOR BLUE TRIM 940...

Page 22: ...18 1 2 6 7 3 4 5 Figure 15 Guardian FFM Exploded View Figure 16 Guardian Regulator Isometric View ...

Page 23: ...e fastening nut 5 The fastening nut is then screwed down clockwise until tight against the mask The Buddy Phone cable should be pointing towards the Buddy Phone above the right ear 6 Once the microphone is inside the port carefully position it within 1 4 of the right corner of the diver s lips The port accepts either the ME 16R Hot Mic or Super Mic 7 Fully insert the upper right head strap of the ...

Page 24: ...d clockwise until tight against the mask 6 Once the microphone is inside the port carefully position it within 1 4 of the right corner of the diver s lips The port accepts either the ME 16R Hot Mic or Super Mic 7 The left earphone cable travels snug up the right side of the visor and over the top by tucking the wire into the groove between the mask and visor 8 Insert the temple and jaw mask straps...

Page 25: ...21 NOTES ...

Page 26: ...22 NOTES ...

Page 27: ...23 NOTES ...

Page 28: ...enter or properly trained personnel In no event shall OTS be liable for consequential damages related to our product s OTS recommends that the Guardian Full Face Mask and second stage regulator be maintained on an annual basis Warranty registration is required OTS will replace routine maintenance parts and make appropriate adjustments Any parts requiring replacement due to excessive wear or damage...

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