MSA PremAire System Manual de usuario

Combination

Breathing

Apparatus

and

ULTRAVUE®FACEPIECE

TAL 502 (L) Rev. 0 © MSA 2005 Prnt. Spec. 10000005389 (I) Mat. 10064385

Doc. 10064385

TAL 502 (L) Rev. 0 - 10064385

ULTRAVUE FACEPIECE COMPONENTS

Item Part No. Description

800509 Small , Faceblank Hycar

1800507 Medium, Faceblank Hycar

800511 Large, Faceblank Hycar

2817263 Harness

3817088 SpeeD-ON Headharness Only

496662 Buckle Assembly (3 Req’d.)

5457190 Buckle Assembly with D-Ring (2 Req’d.)

6801127 Lens, Polycarbonate (with Super Hardcoat)

7814074 • Inlet and Speaking Diaphragm Assembly (MMR)

479757 • Inlet and Speaking Diaphragm Assembly (BMR)

8628210 Clamp

996666 • Retainer Ring

10 488874 Speaking Diaphragm (flat side toward retainer ring)

11 629935 • O-Ring

12 473698 • Speaking Diaphragm Housing

13 813103 • Inlet Valve

14 491934 • Inlet, Valve Body

15 812839 • Adapter Assembly, 1/4 Turn (MMR)

16 813154 • Retaining Ring (MMR)

17 804824 • Adapter Assembly w/Gasket, Threaded (BMR)

18 804825 • Gasket (BMR)

19 461864 Exhalation Valve Assembly (complete)

20 461610 Retaining Nut

21 484678 Exhalation Valve

471710 Small, Nosecup Assembly

22 471711 Medium, Nosecup Assembly

471712 Large, Nosecup Assembly

23 804822 Nosecup Valve Seat (2 Req’d.)

24 804823 Valve Disc (2 Req’d.)

KITS

471249 Small, Lens Ring (Gray), Kit

25 464358 Medium, Lens Ring (Black), Kit

471250 Large, Lens Ring (Gold). Kit

ACCESSORY

26 454819 Spectacle Kit (Not Shown)

3TAL 502 (L) Rev. 0 - 10064385

pressure demand facepiece NFPA

•

TAL 502 (L) Rev. 0 - 10064385

TAL 205 (L) Rev. 10 - 800000

5TAL 502 (L) Rev. 0 - 10064385

TAL 205 (L) Rev. 10 - 800000

TAL 502 (L) Rev. 0 - 10064385

ULTRAVUE FACEPIECE REPAIR

See the INTRODUCTION Tab section of this Binder for

required tools.

RUBBER HEAD HARNESS

1. To remove a damaged headstrap from the facepiece,

lay the facepiece on a table or other flat surface.

a. Pull the back of each buckle away from the head-

strap, then pull slightly so the headstrap end-tab is

at the buckle.

b. Fold the end-tab

sides together, then

pull each end-tab

through its buckle.

2. To install a new rubber headstrap, lay the new head-

strap flat. The MSA logo should be right-side up. The

strap is labeled. Pick the headstrap up by the strap

labeled "FRONT."

a. Fold the end-tab sides together.

b. Push the headstrap end-tab under the wire roller.

c. Pull the wire roller down against the strap.

d. Re-fold the end-tab

and push it through

the buckle again, this

time passing over

the wire roller.

e. Repeat steps a

through d for each

remaining strap.

Check that the head-

strap is not twisted.

3. Don the facepiece and check the face-to-facepiece

seal. Follow the steps in the Facepiece Fit Check.

SPEED-ON®HARNESS

1. Thread the crown, temple, and neck straps into the

buckles as follows:

a. With folded side down, thread the strap into the

bottom section of the buckle under the roller bar.

b. Push the roller bar down and thread the end

through the top section of the buckle.

c. Adjust so that

the pull-tab

extends

beyond the

buckle metal

tab.

Note: It is important to have the folded side of the elastic

strap face up, so the strap will lay flush against the head

when it is pulled tight.

d. Check that the installed harness straps are not

twisted.

Note: Neck location buckles have an extra D-ring which

is not involved in installation.

Cleaning The SpeeD-ON Harness:

Machine wash in warm water (maximum 120 degrees F)

with a mild detergent. Dryby squeezing excess water

from the harness and hanging in open air. Do not dry

clean. Do not bleach or use abrasive cleaners. Do not fold

or store when wet.

7TAL 502 (L) Rev. 0 - 10064385

Pull Tab

Temple Strap Temple Strap

Crown Strap

Buckle Metal Tab

ULTRAVUE FACEPIECE REPAIR

REPLACING LENS AND RING

1. Remove the facepiece lens:

a. Loosen and remove

the screw from each

side of the retaining

ring.

b. Remove both retaining ring halves.

c. Fold the facepiece

flange rubber back

and pull the lens out

of the groove.

Keep the protective papers on the lens until the lens is

completely assembled in the facepiece.

2. Installing the new facepiece:

a. Remove any dirt,

lens fragments, or

other debris from the

groove. Line up the

new lens center-line

marks (top and bot-

tom) with the face-

piece center-line

mark.

Then insert the lens into the groove. Work the facepiece

flange around the lens to seat the lens fully in

the groove.

b. Line up the lens ring center-line with the facepiece

flange center-line mark. Press the ring half in place.

Mount the other ring half in the same way.

c. Press the ring halves together at the top and bot-

tom of the facepiece so that the ends mate.

d. Install a screw on each side.

e. Start the screws. They should thread easily. If not,

remove and re-install the screws to avoid cross-

threading. Maintain hand pressure on both ring

halves.

f. As the ring halves come together, alternate tighten-

ing the left and right screws to be sure the ring

seats thoroughly on the flange.

Do not over-tighten. Rubber must not show between

the lens ring ends at the joint. If this happens,

reassemble.

g. Remove all lens protective papers from the new

lens.

h. Don the facepiece and check the face-to-facepiece

seal. Follow the steps in the Facepiece Fit Check.

i. Install a cover lens to protect the facepiece polycar-

bonate lens during storage.

SPEAKING DIAPHRAGM HOUSING

1. Loosen the band clamp

screw to remove the

entireinlet (P/N

470039). Remove the

clamp and pull the

assembly out of the

facepiece.

2. To reassemble the entire speaking diaphragm housing

in the facepiece:

a. Slide the band clamp over the inlet.

b. Slide the inlet

assembly into the

facepiece. Check

that the air ducts in

the housing arelined

up with the ducts in

the facepiece.

c. Be sure that the assembly is pressed into the face-

piece completely.

TAL 502 (L) Rev. 0 - 10064385

ULTRAVUE FACEPIECE REPAIR

d. The band clamp

must be positioned

so that the screw is

at the 5 or 7 o'clock

position. The screw-

head must be to the

left so that it will not

rub the facepiece

rubber.

e. Tighten the band clamp until the inlet is secured. Be

sure that the band clamp will not pull the facepiece

rubber away from the assembly. Do not over-tight-

en. If the facepiece rubber "bulges" out through the

slots in the clamp, the clamp is too tight and must

be loosened and re-tightened.

3. Don the facepiece and check the face-to-facepiece

seal. Follow the steps in the Facepiece Fit Check.

SPEAKING DIAPHRAGM

1. Unscrew the retainer

ring, using the face-

piece spanner wrench

(P/N 461828).

2. Turnthe facepiece upside down and shake out the

metal speaking diaphragm.

3. Check the speaking diaphragm for damage. Replace it

if it is wornor damaged.

4. Check the speaking diaphragm gasket or O-ring.

Replace the gasket or O-ring if either is wornor dam-

aged.

The flat gasket (used on old-style facepieces) and the

O-ring (used on the new design) are not interchange-

able. Replace the gasket with the P/N 83630 gasket

only. Replace the O-ring with the P/N 629935 O-ring

only.Failureto follow this warning may cause inhala-

tion of contaminant and result in serious respiratory

injury or death.

5. To reassemble the speaking diaphragm, place the

gasket or o-ring in the groove of the speaking

diaphragm housing.

6. Place the speaking

diaphragm in the hous-

ing so that the rolled lip

rests on the gasket or

o-ring.

Be sure that the crimped side of the speaking diaphragm

is facing up (away from the gasket or o-ring).

7. Replace the retainer ring and tighten, using the span-

ner wrench.

8. Don the facepiece and check the face-to-facepiece

seal. Follow the steps in the Facepiece Fit Check.

INHALATION DISC VALVE

1. Use the spanner

wrench (P/N 496317).

Press the adapter slip

nut in. Turnthe wrench

counter-clockwise (left)

to unthread the

adapter.

2. Lift the neckstrap retaining ring off the housing. Note

how the "fingers’’ line up in the housing.

3. Lift the spider gasket

out of the coupling nut

housing by its tab.

4. Remove the valve disc from the coupling nut housing.

If you cannot grasp the disc with your fingers, use a

blunt object, such as a ballpoint pen to lift one edge,

then remove the disc. Be careful not to tear the soft

disc.

5. Inspect the disc for tears or punctures. The disc

should be very soft and pliable. Install a new disc if it

is damaged or hardened.

9TAL 502 (L) Rev. 0 - 10064385

ULTRAVUE FACEPIECE REPAIR

6. To install the inhalation disc valve:

a. Press the valve disc on the pin in the coupling

housing.

b. Carefully tuck all

edges of the disc

under the housing

lip.

c. Replace the spider gasket (tab up) and press it on

the pin.

d. Place the neckstrap

retaining ring on the

housing. Line up the

"fingers’’ with the

housing.

e. Place the locking ring on the adapter.

f. Insert the adapter assembly through the hole in the

retaining ring. Startto thread the adapter slip nut

into the speaking diaphragm housing.

g. Turnthe adapter so

that the bayonets are

horizontal. Hand-

tighten the slip nut

until the two adapter

"wings" lock into the

two large tabs in the

retaining ring. Make

sure that each of the

two large tabs on the

retaining ring is fully

seated in both of the

slots on the adapter "wings."

h. Using the spanner

wrench, tighten the

adapter slip nut until

the slip nut locks

into the spring finger

on the retaining ring.

Continue to tighten

the slip nut so that

the adapter seals

against the spider

gasket. The slip nut

should be tightened

12 to 27 in-lb.

i. Verify each of the following features:

• The adapter bayonets are locked into a horizontal

orientation and can NOT be rotated;

• The slip nut is threaded completely into the face

piece and locked securely; it can NOT be rotated;

• The metal retaining ring is locked into position

and can NOT be rotated;

• There is no loose play in the assembly of parts.

PRESSURE DEMAND EXHALATION VALVE

1. Temporarily fold the headstraps back over the front of

the facepiece lens.

2. Pull the facepiece chin cup out so that you can see

the inside of the exhalation valve.

3. Use the facepiece

spanner wrench to

loosen the valve retain-

ing nut.

4. Unscrew and remove the retaining nut. Then, grasp

the valve cover and gently pull the valve out from the

underside of the facepiece.

Note: The pressure demand exhalation valve is replaced

as a unit. No replacement parts are available. All compo-

nents of each valve must be maintained as a unit. When

cleaning the valve, do not interchange parts.

5. Installing the pressure demand exhalation valve in the

facepiece:

a. Inspect the facepiece rubber for tears or cracks.

Replace the facepiece if it is damaged. Clean the area

around the facepiece mounting hole if necessary.

TAL 502 (L) Rev. 0 - 10064385

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