Kirby morgan M-48 supermask User manual

M-48 SuperMask®User Guide

Document #110516001

Document P/N 100-800

Kirby Morgan, SuperLite®, BandMask, Band Mask, KMB, KMB-Band Mask, DSI, Diving

Systems International, EXO, REX®, SuperFlow®, SuperMask and DECA are all registered

trademarks of Kirby Morgan Dive Systems, Inc. Use of these terms to describe products

that are not manufactured by KMDSI is illegal.

The two dimensional images (such as photographs and illustrations) of our products are ©

copyrighted and trademarks of Kirby Morgan Dive Systems, Inc. The three dimensional

forms of our products are trademark/trade dress protected.

made available for the express use of owner of this Kirby Morgan product. No part of this

manual may be reproduced, stored in any retrieval system, or transmitted, or used in any

form or by any means, whether graphic, electronic, mechanical, photocopy, or otherwise

by technology known or unknown, without the prior written permission of Kirby Morgan

Dive Systems, Inc.

M-48 SuperMask User Guide

Warranty Information

Kirby Morgan Dive Systems, Inc. warrants every new mask,

helmet, or KMACS 5 Air Control System to be free from defects

in workmanship for a period of three hundred sixty ve (365)

days from date of purchase. This warranty covers all metal,

berglass, and plastic parts. This warranty does NOT cover

rubber parts, communications components, or head cushions. In

addition, due to the electrolytic nature of underwater cutting and

welding, chrome plating cannot be warranted when the diver

engages in these activities.

Should any part become defective, contact the nearest autho-

rized KMDSI dealer. If there is no dealer in your area, contact

KMDSI directly at (805) 928-7772 x 229. You must have a

return authorization from KMDSI prior to the return of any

item, Upon approval from KMDSI, return the defective part,

freight prepaid, to the KMDSI plant. The part will be repaired or

replaced at no charge as deemed necessary by KMDSI.

This warranty becomes null and void if:

1) The product is not registered with KMDSI within ten (10)

days of purchase.

2) The product has not been properly serviced and/or main-

tained according to the appropriate KMDSI manual.

In addition, the user is responsible to ensure that all

product updates as recommended by KMDSI have been

performed.

3) Unauthorized modications have been made to the prod-

uct.

4) The product has been abused or subjected to conditions

which are unusual or exceed the product’s intended service.

NOTE: Be sure to complete the enclosed warranty card and

return it to KMDSI immediately. No warranty claims will be

honored without a satisfactorily completed warranty card on le

at KMDSI.

M-48 SuperMask User Guide

Table Of Contents

Denitions of Signal Words Used in this Guide ��5

Introduction ��6

CR Marking ��9

CE Certication ��9

CE Marking ��9

Notied Body �� 10

Cleaning Procedures �� 11

Germicidal Solutions �� 11

Germicidal Solutions Manufacturers�� 12

Components of the M-48 SuperMask�� 14

Using the M-48 SuperMask with Open Circuit Scuba �� 14

Surface-Supplied Open Circuit �� 14

Minimum Equipment for Surface-Supplied Diving�� 16

Demand Regulator Adjustment / Surface-supplied �� 16

Regulator Hose�� 17

Diver Work Rate�� 17

Pre-Dive Inspection�� 17

Mounting Open Circuit Regulators �� 18

Tools and Components Needed for

Installation of Regulator �� 21

Pre-Dive Inspection with

Open-Circuit Demand Regulator �� 25

Cleaning the Face Port and Interior Surfaces �� 26

Donning the SuperMask�� 26

Connecting the Pod to the Mask �� 28

Alternate Method of Connecting the Pod to the Mask �� 29

Diving with a Hood�� 30

Water Entry �� 30

Removing / Replacing Pod While Underwater �� 30

Alternate Method of

Removing/Replacing Pod Underwater �� 31

Mask / Pod Dewatering �� 31

Releasing the Pod �� 32

Removing the Mask�� 33

Post Dive Procedures �� 33

Alternate Method of Mask Removal �� 33

Quick-Release Method of Mask Removal�� 33

Conservation Storage Conditions �� 34

Scheduled Maintenance �� 34

M-48 SuperMask User Guide

General Disassembly Guidelines �� 35

Post-Dive Cleaning And Inspection �� 35

Head Harness Removal and Installation �� 37

Communications with the M-48 SuperMask®�� 37

Removal of Harness from �� 37

Mask Frame �� 37

Installation of Harness on Mask Frame�� 37

Soft Pods (UBA And SCUBA) �� 38

Visual Inspection �� 38

Tilt-to-Purge Valve Assembly �� 38

Installing a Communications Port Plug �� 39

Buckle Options �� 40

Demand Regulators�� 40

Accessories for the M-48 SuperMask �� 41

Non-Stretch Harness P/N 805-030 �� 41

Mask Bag P/N 800-903 �� 41

Inlet Swivel P/N 305-017 �� 41

Communications Port Plug P/N 820-155�� 41

Manifold Block�� 42

Over-Pressure Relief Valve P/N 200-017 �� 42

Exploded View Drawing of the KMS-48 SuperMask �� 43

Tables

Diver Work Rate�� 17

Pre-Dive Inspection�� 18

Scheduled Maintenance �� 35

Post-Dive Cleaning And Inspection �� 36

M-48 SuperMask User Guide Denitions of Signal Words Used in this Guide

Denitions of Signal Words Used in this Guide

Throughout this manual we will use certain words to call your attention to

conditions, practices or techniques that may directly affect your safety. Pay

particular attention to information introduced by the following signal words:

BDANGER

This word indicates an imminently hazardous situation,

which if not avoided, could result in death or serious in-

jury.

BWARNING

This word indicates a potentially hazardous situation,

which, if not avoided, could result in death or serious in-

jury.

BCAUTION

This word indicates a potentially hazardous situation,

which if not avoided, may result in minor or moderate in-

jury. It may also be used to alert against unsafe practices.

This Operation Manual contains important safety information and should

always be available to those personnel operating this equipment. Read,

understand, and retain all instructions before operating this equipment to

prevent injury or equipment damage.

If you sell or loan this equipment to another person, be sure that this manual

accompanies the gear when you transfer possession to them.

Introduction M-48 SuperMask User Guide

Introduction

Congratulations for choosing the Kirby Morgan SuperMask®. The

SuperMask represents years of development and testing. Development

of this mask could not have been possible without the help of the diving

community as a whole.

The original goal was to develop a modular full-face mask that could of-

fer greater comfort and safety to divers using self-contained breathing

apparatus.

The SuperMask has been tested and certied by Dive Lab Inc. Congura-

tion in both open and closed circuit mode have been tested and approved

for use by U.S. military organizations

KMDSI will continue to develop the mask as well as additional pods and

accessories. Users should routinely check the KMDSI web page for ad-

ditional information. Questions on the use and care of this mask should be

addressed to Kirby Morgan Dive Systems Inc. Telephone 805-928-7772 or

e-mail at www.kirbymorgan.com or Dive Lab Inc, Telephone 850-235-2715

or e-mail at www.divelab.com.

BDANGER

☣

BIOHAZARD

Kirby Morgan Dive Systems, Inc., cannot

guarantee the diver protection from con-

taminants when using the SuperMask in

waters that are biologically, chemically or

radioactively polluted. Radioactive, chemi-

cal, and biological contaminants can cause

serious, permanent bodily harm or death to

the user.

While the SuperMask can minimize and

help reduce the risks associated with the

exposure to certain waterborne chemical

and biological contamination, it cannot pro-

tect the user in all situations or against all

contaminants.

•

CORROSIVE



RADIOACTIVE

M-48 SuperMask User Guide Introduction

BWARNING

Not all SCUBA regulators or DSV’s (mouthpieces) will

t the SuperMask standard SCUBA pod. The size of the

mouthpiece mounting tube as well as the placement and

size of the exhaust tee can affect the mounting and proper

functioning of the mouthpiece and folding action on the

pod bellows. There is also a soft SCUBA pod intended for

large DSV or demand regulator P/N 805-095. Regardless

of the soft pod being used, it is extremely important that

the demand regulator or DSV being tted does not have

any sharp edges that could cut the pod skirt or mouth-

piece orice and ts properly

The SCUBA regulator or DSV must not interfere with the

t of the mask, and all components must be fully func-

tional. Do not use any component with the mask or pod

if the component or mask functions are compromised in

any way. If in doubt call or email Dive Lab Inc.

BWARNING

Use only mouthpieces with the appropriate dimensions

and characteristics for the M-48 mask pod and the breath-

ing apparatus you have selected. Use of other mouth-

pieces may cause an insecure t which could lead to

separation of the mouthpiece from the pod, resulting in a

ooded pod and drowning.

BWARNING

Diving this mask in water containing concentrations of

petroleum based chemicals could cause degradation

of the components of the mask. Clean the mask using

only a solution of one (1) tablespoon of a mild hand dish

washing detergent, such as Joy ™ or Palmolive ™, to one

gallon of water.

Introduction M-48 SuperMask User Guide

BWARNING

Cold Water Diving (water Temperatures below 450˚F or

10°C) requires specialized training and equipment. Do

not attempt diving in cold water unless you are properly

trained and equipped for this type of specialized diving.

BWARNING

The SuperMask is NOT equipped with a one-way valve

(non-return valve) for surface-supplied diving. When us-

ing the mask for surface-supplied diving it must be used

with the KMDSI manifold block KMDSI PN# 300-150 or

300-155 and a suitable harness and emergency gas sup-

ply system.

Without the non-return valve, the diver could be subject

to a “squeeze” if the umbilical supply is severed. This

can be fatal.

BWARNING

If the mask is used for surface-supplied diving, do not

connect the umbilical directly to the SuperMask pod reg-

ulator. This can create a direct pull on the mask and pod.

Always connect the umbilical to the one-way valve on

the manifold block assembly, which must be properly se-

cured to the harness assembly.

BCAUTION

Do not use aerosol spray silicone or other aerosol sprays

on or near the mask or pod. Aerosol propellants can dam-

age plastic components on the mask and pod.

We welcome and encourage all input from our customers. Our goal is to

provide the highest quality diving equipment and service possible. If you

have any questions or comments, please feel free to contact us (see contact

information on back cover).

M-48 SuperMask User Guide CR Marking

The SuperMask has been designed for use with either open circuit scuba,

closed and semi-closed circuit scuba, and demand mode surface-supplied

diving. Regardless of the diving mode, the mask must be congured for

the type of system employed.

The mask, when used with CE approved open circuit scuba regulators and

components, conforms to European CE requirements

CR Marking

The full face mask meets or exceeds all standards established by Dive Lab

of Panama City, Florida, and is CR (Commercially Rated) marked.

C

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I

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O

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-

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B

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S

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-

TM

CE Certication

The full face mask has been tested and conforms to the performance re-

quirements as set forth in Annex II of Directive 89/686/EEC and, as far as

applicable, the EN 250:2000 and EN 250/A1:2006. It is fully CE marked

with Kirby Morgan SuperFlow®Plastic Adjustable 2nd Stage Regulator

Ref. 805-120.

Category of PPE: III

BWARNING

The Full Face Mask has been tested with air and CE cer-

ticates for use with air up to 50 meters.

Compressed air must be compliant with the EN 12021.

All the tables reporting the technical data and the pres-

sure of use are relative to compressed air.

CE Marking

On the lens of the mask the CE mark is printed.

CE Certication M-48 SuperMask User Guide

In the mark the data reported are the following:

1. The name and the address of the manufacturer;

2. CE marking: ;

3. The Full Face Mask Model (SuperMask M48);

4. Harmonized reference standard EN250.

BCAUTION

The user cannot:

• remove the mark from the frame of the full face

mask;

• modify or counter feit the data reported on the mark.

BCAUTION

The mark must be visible and legible throughout the

life of the PPE. If the mark deteriorates or is not leg-

ible the user should contact the manufacturer.

Notied Body

The Notied Body is DNV- MODULO UNO S.c.a.r.l.

M-48 SuperMask User Guide CE Certication

Address: Via Courgnè, n.21

10156 Torino

Identication number: 0496.

Cleaning Procedures

During a standard overhaul, parts should be cleaned in warm water with a

detergent solution and thoroughly rinsed in clean water.

Only non-ionic detergent (NID) should be used to clean the mask. For

NID, mix 0.1 to 0.5 ounces per gallon of fresh water. With this solution,

a cleaning time of 10 to 15 minutes in an ultrasonic cleaner is sufcient.

Extended time should be avoided. If no ultrasonic cleaner is available, the

parts may be submerged in a properly mixed solution of fresh water and

NID for up to two hours. A nylon toothbrush and/or tube brush can be used

to remove corrosion. After cleaning, rinse all parts thoroughly with fresh

water and allow drying. Always inspect the general condition of the pod

and the components for any damage or wear before reassembling.

Germicidal Solutions

BWARNING

Always sanitize all diving components an individual will

be exposed to prior to use by another person. Failure to

do so could result in the transmission of communicable

diseases, some of which may cause long term disability

or death.

BCAUTION

Carefully dilute germicidal cleansing solutions in ac-

cordance with manufacturer’s recommendation. If

solution is not of the recommended strength, it will

not act as an effective disinfectant.

CE Certication M-48 SuperMask User Guide

BCAUTION

Failure to thoroughly rinse germicidal cleansing so-

lution from the diving equipment may result in lung

irritation and/or long-term degradation of rubber and

silicone components.

Sanitizing of the mask and pod is accomplished using one of the approved

germicidal cleansing solutions listed in “Germicidal Solutions Manufac-

turers” on page 12. Follow the manufacturer’s mixing instructions and

procedures. It is important to thoroughly rinse with fresh water to remove

all traces of sanitizing solution.

General guidelines are as follows:

Wet or immerse all components to be sanitized. Allow to stay in contact

with solution for at least ten minutes while lightly scrubbing over com-

ponents with nylon toothbrush or clean cloth to help remove mucous or

saliva build up.

If germicidal solution appears to be drying, apply more solution to keep

components wet for full ten minutes.

After ten minutes, thoroughly rinse components under fresh (potable) run-

ning water while brushing or rubbing components.

If equipment is not being used immediately, allow components to air dry

or pat dry with clean towel and reassemble.

Germicidal Solutions Manufacturers

1. SaniZide Plus: P/N: 34805 (spray) or 34810 (gallon), Ready to

use; do not dilute.

SAFETEC of America, Inc 1055 E. Delavan Ave. Buffalo, NY

14215 USA 1-800-456-7077

2. Advance TBE: P/N: AD160 (spray) or AD1128 (gallon), Infection

Control Technology ): Ready to use.

Infection Control Technology 1751 So. Redwood Rd. Woodscross,

UT 84087 USA 1-800-551-0735

3. Bi-Arrest 2: P/N: BP201 (4 ounces) or BP 222 (32 ounces), Infec-

M-48 SuperMask User Guide CE Certication

tion Control Technology. Mix two pumps of the concentrate with 16

ounces of fresh water.

Infection Control Technology 1751 So. Redwood Rd. Woodscross,

UT 84087 USA 1-800-551-0735

4. Condence Plus: P/N: 10009971 (32 ounces) Mix one ounce of

concentrate with one gallon of fresh water.

Mine Safety Appliances 1-800-MSA-2222

BDANGER

Deep diving requires special training and equipment.

Deep diving increases your risk of decompression sick-

ness and possible other diving injuries. KMDSI does not

recommend recreational diving deeper than 164 feet of

seawater (50 meters), or beyond the no-decompression

limits.

Components of the M-48 SuperMask M-48 SuperMask User Guide

Pod

Mask

Head Harness with

Quick Release System

Nose Pinch

Pocket

Pod Catch

Head Harness

Buckles (4)

Lens / Lens Frame

Upper Lip Seal

Pod Hooking Area

Regulator

Access Ports for

Mounting Accessories

Hook

Mouthpiece

Tilt Valve Water Dump

Catch / Release

Components of the M-48 SuperMask

Using the M-48 SuperMask with Open Circuit Scuba

For open circuit SCUBA, the SuperMask is used in much the same way as

a half mask and standard second stage regulator. If you have purchased the

SuperMask with a SuperFlow second stage regulator, a special SuperMask

Mouthpiece P/N 810-022 L is mounted to the scuba pod and secured with

a tie wrap.

If your SuperMask is not already equipped with an appropriate second

stage regulator, it is imperative that you read, understand and follow the

instructions for mounting open circuit demand regulators instructions in

this User’s Guide before attempting to install a second stage. When using

this mask in countries that conform to CE standards the mask must only

be used with components that have been CE certied. The maximum rec-

ommended recreational diving depth for the SuperMask with open circuit

scuba is 130 FSW (39 msw).

Surface-Supplied Open Circuit

The SuperMask can be used for surface-supplied diving when used with a

surface-supplied diving system.

M-48 SuperMask User Guide Surface-Supplied Open Circuit

When using the KMDSI SuperFlow second stage, the mask can be used

to depths of 130 FSW (39 msw) when supplied with an air source capable

of delivering at least 4.5 actual cubic feet of air per minute (acfm) (127

alpm) to the diver worn manifold assembly. An ordinary scuba regulator

rst stage connected to a diving cylinder on the surface with a long hose

to the mask is not an acceptable arrangement for this purpose, no matter

what type of regulator is used.

The mask should only be used for surface-supplied diving by divers trained

and qualied in surface-supplied techniques and procedures. A fully func-

tional emergency gas supply system and body harness must always be used

when diving the SuperMask or any of the KMDSI full-face masks models

in the surface-supplied mode.

The mask has not been CE approved for surface-supplied diving and

should not be used for surface-supplied diving in countries conforming to

CE standards

Users of the SuperMask should practice donning, dofng, pod removal, and

replacement procedures on the surface, in the dry. Once the basic maneuvers

have been practiced and the user is comfortable, the user can move into a

calm, shallow, controlled body of water (5-10 feet in depth).

It is recommended that persons with previous full-face mask experience

make at least one thirty minute indoctrination dive prior to open-water

diving. Newly trained divers and divers not experienced in full-face mask

diving must complete a training course in surface-supplied diving. Using

the SuperMask is very easy, but as with all new equipment, training and

practice is the key to enjoyable diving.

Minimum Equipment for Surface-Supplied Diving M-48 SuperMask User Guide

If you plan to use the mask for surface-

supplied diving, you will need an air

control manifold topside, like the Kirby

Morgan Air Control System -5.

Minimum Equipment for Surface-Supplied Diving

The minimum equipment for surface-supplied diving with this mask

includes the following:

• Topside air supply

(either low pressure compressor or high-pressure cylinders)

• Air control manifold

• Bail-out bottle with harness

• Bail-out regulator with over-pressure relief valve

• Umbilical with breathing gas supply hose, communications wire,

and pneumofathometer hose

• Communications box

• M-48 SuperMask®equipped with communications

Demand Regulator Adjustment / Surface-supplied

When using the mask for surface-supplied diving in countries conforming

to CE standards, only the KMDSI bias adjustable demand regulator should

be used. The purpose for the bias adjustment is to allow exibility in the use

of various surface supply systems and to allow the surface-supplied diver

to make adjustments for variations in supply pressure.

Occasionally, during the course of the dive, the diver should turn the adjust-

ment knob out until the regulator develops a slight free-ow, then back in

until the free ow stops, this will ensure maximum breathing performance

for the delivery pressure. The diver can also use the adjustment knob when

working in various positions or current.

M-48 SuperMask User Guide Regulator Hose

Regulator Hose

The supply hose that attaches the 1st and 2nd stage

regulators together should be of sufcient length to

allow full movement of the head when the pod is

latched. Ensure that the hose is rmly secured to both

stages and that the regulator is properly functioning

and pressured up before donning the SuperMask. A

special swivel attachment P/N 305-017 (included)

may be attached to the demand regulator. This swivel

allows a better fairlead of the intermediate hose and

less restriction in head movement.

BCAUTION

Do not dive with a low pressure regulator hose connected

to the mask that is too short. Using a hose that is too

short will put unnecessary stress on pod and regulator,

resulting in restricted head movement and could increase

difficulty of latching the pod to the mask.

Diver Work Rate

Work Rate Expressed as Respiratory Minute Volume (RMV)*

Work Load RMV Cubic Feet/Minute

(CFM)

Equivalent Land Based

Exercise

Rest 7-10 RMV 0.2 - 0.35 CFM

Light Work 10-20 RMV 0.35 - 0.7 CFM Walking 2 miles per hour

Moderate Work 20-37 RMV 0.7 - 1.3 CFM Walking 4 miles per hour

Heavy Work 37-54 RMV 1.3 - 1.9 CFM Running 8 miles per hour

Severe Work 55-100 RMV 1.94 - 3.5 CFM

* source: U.S. Navy Diving Manual

Table 1 Diver Work Rate

Pre-Dive Inspection

BWARNING

It is highly recommended that all donning, dofng, pod

removal, and replacement procedures be practiced on

the surface in a dry environment, regularly and often, be-

fore attempting the same procedures in the water

The Hi Flo Swivel

Part #305-017

Mounting Open Circuit Regulators M-48 SuperMask User Guide

Refer to the checklist contained (also on the KMDSI website, www.

kirbymorgan.com) in the following to ensure that a thorough inspection of

the SuperMask, and all related gear before each dive is completed and that

all components are in proper working order. Read and completely understand

this instruction before diving with the SuperMask. Practice the procedures

and understand the functions and features of the SuperMask, and Soft pod.

Diver Name: ___________________________________ Date: ____________________

No. Step Init.

1 Visually inspect exterior and interior of mask and pod for any type of obvious

damage. Both should be free of debris, cuts, nicks, and deterioration.

2

If using a DSV on the pod, test IAW manufactures instructions. Ensure the DSV

and mouthpiece are secure in the pod. If using a demand regulator, inspect IAW

the manufactures recommendations and insure the regulator and mouthpiece are

secure in the pod.

3 Inspect the mask and pod sealing surfaces and insure they are in good condition

with no cracks, tears, debris, or punctures.

4 Carefully inspect head harness for signs of cracking or tearing. Head harness

adjustment buckles should be checked for damage and tested for proper function.

5 Visually inspect viewing lenses . They should be clean and clear. If needed, apply

anti-fog solution prior to use.

6

Inspect following pod components:

[ ] Hook [ ] DSV [ ] Catch/Release [ ] tilt-to-purge valve [ ] Mouthpiece [ ] Ensure

regulator is secure

All parts should be securely mounted and undamaged in any way. Pod catch/

release requires routine inspection before and after each dive to ensure part is in

optimum working condition. When attaching pod assembly to the mask, pod catch/

release should make snapping sound while engaging each ratchet tooth on mask

hook. No sound or physical contact while engaging first ratchet tooth on mask

hook indicates material fatigue, damage or obstruction. Under such circumstances,

pod catch/release must be inspected and/or replaced prior to dive.

7 Check mouthpiece, DSV or Second stage regulator to ensure correct installation,

function, and secure fit.

7A For UBA configuration, ensure both hoses are installed correctly and securely

insure proper routing valve installation.

8 Check accessory mounting bracket and installed components (if applicable) for

secure fit.

9 If installed, check for proper installation of communication system and/or

communication port plug.

10 Conduct a surface fit check of mask, harness and buckle assembly prior to diving.

Table 2 Pre-Dive Inspection

Mounting Open Circuit Regulators

If your mask was not supplied with a KMDSI regulator installed by the

factory, you will need to have an acceptable regulator installed in the pod

on your M-48.

M-48 SuperMask User Guide Mounting Open Circuit Regulators

Prior to installation, to check to see if your regulator will work properly

with the M-48 Pod, remove the mouthpiece from the regulator and loosely

t the regulator in the pod. Check to ensure that it functions properly, with

no interference from, or to, the exhaust tee. If in doubt do not install the

regulator until rst consulting with KMDSI or Dive Lab Inc.

Since there are no standards that govern the size and shape of all the various

second stage regulator mouthpiece mounting tubes, there are many differ-

ent types. To properly mount the regulator into the pod, the mouthpiece

mount tube must have a retaining lip at the end and be at least ¾" long.

Some manufacturers have specially-shaped mouthpiece mounting tubes that

have mating mouthpieces. These types of regulators cannot be used. There

must be a retaining lip at the end of the mouthpiece mounting tube of your

regulator in order to retain the mouthpiece. Use the included mouthpiece

to check the mount tube compatibility.

1.25 inches

.85 inches

The mouthpiece mount tube must have

a minimum width of 1.25 inches and a

height of .85 inches.

Mouthpiece

Mounting Tube

This type NOT

acceptable

.75"

Only use regulators that have a retaining

lip at the end of the mouthpiece mount

tube as shown in the drawing here. The

mount tube must be at least .75 inch long.

The KMDSI mouthpiece and pod opening can be safely stretched to 50%.

Do not use regulators that have a mouthpiece tube that have a double

lip at the end of the tube closest to your mouth, as illustrated at the left.

Mounting Open Circuit Regulators M-48 SuperMask User Guide

BWARNING

The Scuba pod, P/N 805-015, must only be used with de-

mand regulators that have a mouthpiece mount tube that

is at least .75 inch in length, 1.25 inches in width, and .85

inches high. In addition, the mount tube must have a sin-

gle lip on the end that will be closest to the diver’s mouth.

Failure to use the correct type of demand regulator will re-

sult in flooding of the pod which can lead to drowning. Do

not stretch mouthpiece or pod opening greater than 50%

BWARNING

Not all second stage regulators can be properly mounted

in the M-48 pod. The size of the mouthpiece mounting

tube and the placement and size of the exhaust tee can

affect the mounting and proper functioning of the mouth-

piece and folding action on the pod bellow. An incorrect

regulator will lead to flooding of the pod which can result

in drowning.

A mouthpiece must always be

installed in ALL pods regardless

of whether the user intends to

keep the mouthpiece in the mouth

or not. Having the mouthpiece

allows for the user to clear the

water from the demand regulator/

DSV valve and allows for buddy

breathing.

NOTE: Some divers may nd

the mouthpiece as supplied, to be

uncomfortable. It is possible to

trim the mouthpiece to a shorter

length. Using scissors, carefully

shorten the mouthpiece at the trim edge notch.

The M-48 mouthpiece.

Trim notch

Kirby Morgan M-48 SuperMask User manual

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