3M itarus Versaflo Manual Del Usuario página 9

and inserting the airflow indicator tube into the Powered Air Turbo.
Note: Ensure the tight-fitting indicator is lit before inserting the airflow check
tube. Wait for an additional minute to allow the airflow to stabilise.
With the airflow check tube in the vertical position, ensure that the bottom of
the floating ball rests at, or above, the minimum flow mark for the 'letter'
representing your 'zone' (see Fig 6). To determine your zone, you need to
know the elevation and temperature for the environment where you are
conducting the airflow check. Find the zone where your elevation and
temperature intersect on the chart shown in Fig 7.
Alarm Check
The audible, visual and vibratory alarm will activate should the airflow reach
the manufacturer's minimum design flow (MMDF). To check for the correct
functioning of the alarms, place a hand over the outlet of the Powered Air
Turbo. The audible and vibratory alarm should activate and the bottom LED
on the filter icon will flash red.
Note: High environmental noise levels or use of hearing protection may
interfere with the user hearing the audible alarms. Heavy clothing or tasks
with high vibration levels may interfere with sensing the vibratory alarm.
Users may need to check for the visual alarms more frequently in these
environments.
OPERATING INSTRUCTIONS
DONNING
1. Select an approved breathing tube (See reference leaflet for list of 3M
approved breathing tubes) and ensure both seals are in place on the
bayonet end i.e. the end that connects to the Powered Air Turbo (see Fig 8).
Inspect the seals for signs of wear or damage. If the seals are worn or
damaged, the breathing tube should be replaced. Check for debris or
contamination around the bayonet end.
Connect the top end of the breathing tube to the facepiece by screwing
tightly into the inlet.
Note: To fit the optional breathing tube cover, cut the cover to size before
tying around the breathing tube.
2. Fully loosen all 6 head straps, place the harness at the back of the head
and position facepiece over the face. See Fig. 9.
3. Progressively tighten the harness starting with the lower straps then upper
straps (Figure 10). Do not overtighten.
4. Perform a Negative Pressure Fit Check. Place the palm of the hand
over the open end of the breathing tube, inhale gently and hold your breath
for 5 to 10 seconds. If the facepiece collapses slightly a proper fit has been
achieved. If an air leak is detected, reposition the respirator on the face and /
or re-adjust the tension of the elastic strap to eliminate the leakage. Repeat
the above fit check. If an air leak is detected in the breathing tube, this should
be discarded and replaced. If you CANNOT achieve a proper fit DO NOT
enter the hazardous area. See your supervisor.
Users should be fit tested in accordance with national requirements.
For information regarding fit testing procedures, please contact 3M.
5. Select an approved belt (see reference leaflet for list of 3M approved
belts). The Powered Air Turbo has four locking studs (see Fig 11) and the
belt has four corresponding holes (see Fig 12). Insert the four locking studs
into the holes on the belt (See Fig 13). Push down on the belt between the
top and bottom holes on each side (see Fig 14). Slide the belt up (See Fig
15) until the belt snaps over the belt locking tabs on the bottom of the
Powered Air Turbo (see Fig 16). Adjust and buckle the waist belt with the
Powered Air Turbo fitted comfortably around your waist.
6. Insert the bottom end of the breathing tube into the outlet of the Powered
Air Turbo and turn the end of the breathing tube to ensure it is fitted firmly. Do
not overtighten and ensure blue covers are in place before use.
7. Switch on the Powered Air Turbo by pressing the on button for 1 second.
The unit will perform a self-diagnostic. Flow level, filter loading and battery
charger indicators will flash and the auditory and vibratory alarm will activate.
Ensure at least minimum airflow is achieved. (The audible/vibratory alarm will
sound if below minimum airflow - please see fault finding).
Note: The breathing tube must be fitted into the Powered Air Turbo before
switching on to ensure that it enters the tight-fitting mode.
Wearing the breathing tube
The breathing tube can be worn under the arm or over the shoulder (see Fig
17).
If it is worn under the arm, the breathing tube should be comfortable, should
not restrict movement or should not be at risk of looping around protruding
object. To wear the breathing tube under the right arm, the facepiece
connection should be in the position shown in Fig 18.
To wear the breathing tube under the left arm, the facepiece connection
should be in the position shown in Fig 19.
If movement is restricted, or there is a risk of the breathing tube looping
around protruding objects, the breathing tube should be worn over the
shoulder.
The breathing tube retainer should always be used when the breathing tube
is worn over the shoulder.
However, the breathing tube retainer is not suitable for use under a safety
helmet. In this case, the breathing tube should be worn under the arm.
Fitting the breathing tube retainer
The breathing tube retainer comprises of a Y-strap and a visor frame loop.
Stretch the retaining hole on the Y-strap over the end of the breathing tube
that will connect to the facepiece.
Note: If the breathing tube is to be worn over the right shoulder, the Y-strap
should be in the position shown in Fig 20. If the breathing tube is to be worn
over the left shoulder, the Y-strap should be in the position shown in Fig 21.
Position the Y-strap approximately 30cm along the length of the tube as
shown in Fig 22.
Connect the two long straps on the visor frame loop to the Y-strap as shown
in Fig 23. (Note: The parts can be connected at different points along the
Y-strap according to user preference and comfort).
Don the facepiece as described above but do not connect the breathing tube
to the facepiece at this point. Instead, rest the breathing tube and retainer
over the right or left shoulder as shown in Fig 24.
Bring the retainer over the top of the facepiece from behind the head (see
Fig 25). Hold the two side tabs and slightly stretch the retainer over the visor
frame on the facepiece (see Fig 26) so that the cut-out sections on the visor
frame loop fit around the visor attachment screws as shown in Fig 27.
Hold the bottom two tabs on the visor frame loop and gently pull these down
over the bottom of the visor frame (see Fig 28).
The visor frame loop should be tucked in behind the visor and not twisted.
Connect the breathing tube to the facepiece and if needed, adjust the
position of the retaining hole on the breathing tube to ensure a comfortable
fit.
To wear the breathing tube over the right shoulder, the facepiece connection
should be in the position shown in Fig 29.
To wear the breathing tube over the left shoulder, the facepiece connection
should be in the position shown in Fig 30.
Perform a Negative Pressure Fit Check as described above.
Don the Powered Air Turbo as described above.
Note: Take care to prevent the retainer from becoming looped around
protruding objects during use.
IN USE
The Powered Air Turbo has an indicator for tight-fitting mode. This will be lit
when the breathing tube is attached to the Powered Air Turbo.
Note: The Powered Air Turbo has a single flow setting and the flow cannot
be altered by pressing the fan button.
If no buttons are pressed after 30 seconds of use, the display will enter a
sleep-mode. Press any button momentarily to exit this mode.
Display
Tight-Fitting
indicator
(example,
LED = green)
(example,
LED = green)
(example,
LED = green)
On (Normal
Operation)
(LED = green)
On (sleep
mode)
Key: = Slow Flash
8
Sounder Vibrate Explanation
Tight-fitting mode
activated.
Charge status of
battery (less than
_ _
80% in example)
New filter in
_ _
example
Partially loaded
_ _
filter in example
Note: For some
systems, the
inherent pressure
drop e.g. of
headtop and/or
filter, will mean
that not all LEDs
will be lit, even for
new filters
_
_ Standard Flow
_
_
Standard Flow