Aqua Lung Mistral Mouthpiece Manuel de maintenance technique - Page 3

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Aqua Lung Mistral Mouthpiece Manuel de maintenance technique

Mistral Mouthpiece Technical Maintenance Manual

Copyright Notice

part, be copied, photocopied, reproduced, translated or reduced to any

electronic medium or machine-readable form without prior consent in

writing from Aqua Lung America. It may not be distributed through the

internet or computer bulletin board systems without prior consent in

writing from Aqua Lung America.

Mistral Mouthpiece Technical Maintenance Manual

Introduction

This manual provides factory prescribed procedures for the correct

service and repair of the Aqua Lung or Apeks regulator products

described in this manual. It is not intended to be used as an instructional

manual for untrained personnel.

The procedures outlined within this manual are to be performed only by

personnel who have received Factory Authorized training through an

Aqua Lung Service & Repair Seminar. If you do not completely under-

stand all of the procedures outlined in this manual, contact Aqua Lung to

speak directly with a Technical Advisor before proceeding any further.

Warnings, Cautions, & Notes

Pay special attention to information provided in warnings, cautions and

notes that are accompanied by one of these symbols:

WARNINGS

indicate a procedure or

situation that may result in serious

injury or death if instructions are not

followed correctly.

CAUTIONS

indicate any situation or

technique that will result in potential

damage to the product, or render the

product unsafe if instructions are not

followed correctly.

are used to emphasize important

NOTES

points,tips and reminders.

Scheduled Service

If the regulator is subjected to less than 50 dives per year, it is

permissible to overhaul it every other year with an inspection

procedure being performed on the "off" years. For example:

Year #1: Inspection

Year #2: Overhaul

Year #3: Inspection

Year #4: Overhaul, and so on.

Both Inspections and Overhauls need to be documented in the Annual

Service & Inspection Record in the back of the Owner's Manual to keep

the Limited Lifetime Warranty in effect. If a regulator is subjected to more

than 50 dives per year, it should receive the complete overhaul.

An Ofﬁ cial Inspection consists of:

1. A pressurized immersion test of the entire unit to check

for air leakage.

2. Checking for stable intermediate pressure that is within

the acceptable range.

3. Checking for opening effort that is within the

acceptable range.

4. Checking for smooth operation of the control knob and

venturi switch.

5. A visual inspection of the ﬁ lter for debris or discoloration.

6. A visual inspection of the exhaust valve to see that it is in

good shape and that it's resting against a clean surface.

7. A visual inspection of the mouthpiece looking for tears

or holes.

8. Pulling back hose protectors and checking that the hoses

are secure in the hose crimps.

If a regulator fails item #1,2,3 or 4, the entire regulator should be

overhauled. If a regulator fails 4,5,6 or 7, it will be up to the technician's

discretion whether or not a full overhaul is required.

General Guidelines

1. In order to correctly perform the procedures outlined in this

manual, it is important to follow each step exactly in the order given.

Read over the entire manual to become familiar with all procedures

before attempting to disassemble the product in this manual, and to

learn which specialty tools and replacement parts will be required.

Keep the manual open beside you for reference while performing

each procedure. Do not rely on memory.

2. All service and repair should be carried out in a work area

speciﬁ cally set up and equipped for the task. Adequate lighting,

cleanliness, and easy access to all required tools are essential for an

efﬁ cient repair facility.

3. As the regulator is disassembled, reusable components should

be segregated and not allowed to intermix with nonreusable parts

or parts from other units. Delicate parts, including inlet ﬁ ttings and

crowns which contain critical sealing surfaces, must be protected

and isolated from other parts to prevent damage during the cleaning

procedure.

4. Use only genuine Aqua Lung parts provided in the overhaul parts

kit for this product. DO NOT attempt to substitute an Aqua Lung part

with another manufacturer's, regardless of any similarity in shape or

size.

5. Do not attempt to reuse mandatory replacement parts under any

circumstances, regardless of the amount of use the product has

received since it was manufactured or last serviced.

6. When reassembling, it is important to follow every torque

speciﬁ cation prescribed in this manual, using a calibrated torque

wrench. Most parts are made of either marine brass or plastic, and

can be permanently damaged by undue stress.

7. In order to make the regulator compatible with nitrox up to 40%O2

(EAN40), the regulator must be properly cleaned, lubricated and

assembled using genuine Aqua Lung or Apeks replacement parts. In

addition, assembly must be carried out in a clean environment using

powderless, latex gloves or equivalent. For more detailed informa-

tion, be sure to read Procedure A: Cleaning and Lubrication p. 10.

General Conventions

Unless otherwise instructed, the following terminology and techniques

are assumed:

1. When instructed to remove, unscrew, or loosen a threaded

part, turn the part counterclockwise.

2. When instructed to install, screw in, or tighten

turn the part clockwise.

3. When instructed to remove an o-ring, use the pinch method

(see illustration below) if possible, or use a brass or plastic o-ring

removal tool. Avoid using hardened steel picks, as they may damage

the o-ring sealing surface. All o-rings that are removed are discarded

and replaced with brand new o-rings.

4. The following acronyms are used throughout the manual: MP is

Medium Pressure; HP is High Pressure; LP is Low Pressure.

Pinch Method

Press upwards on sides of o-ring to

create a protrusion. Grab o-ring or

insert o-ring tool at protrusion.

5. Numbers in parentheses reference the key numbers on the ex-

ploded parts schematics. For example, in the statement, "...remove

the o-ring (7) from the connector (6)...", the number 7 is the key

number to the o-ring.

or tighten

a threaded part,