After Use; Common User Tasks - Dräger PSS 7000 Series Instructions For Use

PSS 7000 Series with Sentinel 7000
Self-contained breathing apparatus with electronic monitoring system
4.5

After use

WARNING
Removing the breathing apparatus in a hazardous breathing environment
is unsafe.
► Do not remove the breathing apparatus until in a safe breathing
environment.
NOTICE
The equipment can be damaged if removed incorrectly.
► Do not remove the face mask by pulling on the lung demand valve.
1. Loosen the face mask straps. At the point when the seal between the
face mask and the face is broken, press the reset button (Fig J, Item 1)
to switch off the positive pressure. Fully remove the face mask and
extend all the straps of the head harness.
2. Close the cylinder valve.
3. Press the front button (Fig J, Item 2) to vent system and then press the
reset button (Fig J, Item 1) to switch off the positive pressure.
4. Release the waist belt buckle (Fig O or Fig P).
5. Lift the shoulder harness ends to release the strap retainers (Fig L)
and then lift the shoulder harness buckles to loosen the straps.
6. Remove the breathing apparatus and face mask.
7. If the lung demand valve has been set to bypass, press and rotate the
bypass button (Fig J, Item 3) to align the red spots and then release to
switch off the bypass.
8. Press and hold the left and right buttons of the user interface (Fig B)
until the display clears, then immediately release the buttons. After
approximately 180 seconds, all six HUD LEDs will flash twice to
indicate that the unit has logged off.
9. Carry out the after use tasks in the maintenance table (see
Section 6.1).
10. Remove the compressed air cylinder if necessary (see Section 4.6.4).
11. Pass the breathing apparatus to the service department with details of
any faults or damage that occurred during use.
4.6

Common user tasks

4.6.1 Visual inspection
A visual inspection must check the full breathing apparatus including all
component parts and accessories. Check that the equipment is clean and
undamaged, paying particular attention to pneumatic system components,
connectors, and elastomeric components such as hoses. Typical signs of
damage that may affect the operation of the breathing apparatus include
impact, abrasion, cutting, corrosion, and discoloration. Report damage to
service personnel and do not use the apparatus until faults are rectified.
4.6.2 Adjusting the backplate height
1. Lift the apparatus into the vertical position.
2. Simultaneously press the two spring-loaded buttons (Fig Q) to unlock
the shoulder yoke. Slide the yoke in the required direction then release
the buttons. Continue sliding the yoke until the buttons engage and
lock the yoke in the required position.
4.6.3 Fitting or replacing the batteries
WARNING
Improper handling and use of batteries may cause an explosion, a fire, or
a chemical hazard.
► Do not remove or install the batteries in a flammable atmosphere.
► Do not expose the batteries to heat sources.
► Do not attempt to recharge any non-rechargeable battery.
► Do not short out the battery terminals.
► Use only the recommended battery type.
► Replace batteries as a matched set and do not mix new and used
batteries.
NOTICE
Batteries that are not correctly disposed of may cause an environmental
hazard.
► Dispose of used batteries in accordance with national or local
regulations.
The backup battery only supplies power when the main battery is
disconnected or discharged. When this occurs, the backup battery only
supplies power for HUD functions.
If the display switches off and the functionality of the HUD is powered by
the backup battery during use, Dräger recommend that the backup battery
is replaced after use.
General battery information
● The normal operating life of the batteries depends on operating time,
frequency of alarms and ambient temperature.
● Remove discharged batteries from the product.
System batteries:
● Main battery: 7.5 V (5 x 1.5 V AA alkaline batteries).
● Backup battery: 3 V (CR123 lithium battery).
● HUD battery: 3 V (CR123 lithium battery).
Use only the following approved battery types:
● Procell ® by Duracell ® LR6 (1.5 V).
®
● Duracell Plus LR6 (1.5 V).
● Panasonic ® CR123AL/1BP (3 V).
Backup battery
1. Orientate the apparatus to access the battery compartment.
2. Unscrew and remove the battery cap (Fig R, Item 1) using a suitable
coin.
3. Insert the battery, positive terminal end first, into the battery
compartment.
4. Refit and secure the battery cap. Do not over tighten.
Main battery pack
1. Inspect the sealing rim around the battery terminals. Ensure that the
terminals of the battery and the pressure module are clean and
undamaged.
2. Lift and turn over the apparatus to access the pressure module.
3. Insert the battery pack into the backplate recess (Fig S).
4. Position thumbs on top of the two screws and push down firmly to lock
the battery pack (Fig T).
5. While pushing down, confirm the two sliding locks move to their locked
position viewed through the two keyholes as illustrated (Fig U).
6. The Sentinel 7000 emits a single tone and commences the self-test
sequence (described in Section 3.1.1).
7. Switch off the unit if necessary once the unit has passed the self-test.
To switch off, press and hold the left and right buttons of the user
interface (Fig B) until the display clears, then immediately release the
buttons.
To remove the main battery insert and press the battery pack release key
(supplied with the breathing apparatus) into the two keyholes at the base
of the battery. This opens the locking latch allowing the battery to be
removed. To preserve the datalog clock, install a new battery pack within
3 minutes of removing the discharged battery pack.
Replacing the cell in the main battery pack
1. Remove the eight screws using a 2.5 mm hexagon key, and remove
the battery cover.
2. Remove the discharged batteries and install a new set observing the
polarity marked inside the pack.
3. Check the sealing ring and refit the battery cover and screws. Do not
over tighten the screws: Dräger
0.5 lbf ft (0.7 Nm).
4.6.4 Fitting or removing the compressed air cylinder
WARNING
High-pressure air release may cause injury to the user or other personnel
near the breathing apparatus.
► Close the cylinder valve and fully vent the system before attempting to
disconnect a compressed air cylinder.
Impact damage to the cylinder valve or first-stage regulator connector may
prevent valve connection or cause an air leak.
► Handle the compressed air cylinder and breathing apparatus with
care.
The following instructions are for a threaded cylinder coupling. See the
quick connect coupling instructions for use for details of fitting and
removing a quick connect coupling.
Fitting the cylinder
1. Set the backplate to position S.
2. Check the threads of the cylinder valve port and the first-stage
regulator. Ensure that the O-ring seal (Fig V, Item 1) in the first-stage
regulator is clean and undamaged.
3. Lay the backplate horizontal, with the first-stage regulator uppermost,
and fully extend the cylinder strap.
4. Insert the cylinder through the loop of the strap, and align the valve with
the regulator.
5. Lift the cylinder and backplate into the vertical position (supported on
the end of the cylinder opposite the valve).
6. Tighten the hand wheel of the regulator, using only the thumb and
index finger, until a definite metal-to-metal contact is felt. Do not use
tools or over tighten.
7. Place the unit back into the horizontal position.
8. Take up the slack in the cylinder strap (Fig W).
9. Pull the strap over the cylinder to operate the cam-lock buckle (Fig X)
and secure using the hook-and-loop fastener.
Removing the cylinder
1. Close the cylinder valve and press the front button (Fig J, Item 2) to
fully vent the system.
2. Set the backplate to position S.
3. Lay the backplate horizontal, with the cylinder uppermost.
4. Remove the free end of the cylinder strap from the hook-and-loop
fastener.
5. Lift the strap against the cam-lock buckle to release the buckle tension
and loosen the strap.
6. Disconnect the cylinder valve from the first-stage regulator.
7. Lift the cylinder away from the first-stage regulator and remove the
cylinder.
4.6.5 Functional testing
WARNING
Failure of the equipment to meet any of the standards or parameters in the
functional test, or any visible signs of damage, indicates a possible system
fault.
► Do not use the equipment and report the fault to trained maintenance
personnel or contact Dräger.
Self-test
1. Press the left and right buttons of the user interface (Fig B) to activate
the self-test sequence:
a. The unit commences the self-test. During the sequence, the
system checks alarms and indicators and the display scrolls
through a series of startup screens. For a full description of the
start-up sequence and options, see Section 3.1.1.
b. At the end of the sequence, the normal operating screen is
displayed, and the green LED flashes at approximately one
second intervals to indicate that the Sentinel 7000 has passed the
self-test and is in the active mode.
If the battery voltage is below a minimum preset voltage the backlight
illuminates, the low battery icon (Fig N) displays, the unit emits a series of
tones and then switches off. If this occurs, or the unit fails to switch on,
replace the battery (see Section 4.6.3).
If the cross icon with a fault code displays (Fig Y), the Sentinel 7000 has
failed the self-test. Record the fault code and contact Dräger for repair.
PASS check
1. Press the manual alarm button in the center of the user
interface (Fig B, Item 2). The distress alarm sounds, the manual alarm
icon ( ) displays and the red and blue LEDs flash intermittently.
2. Simultaneously press and hold the left and right buttons (Fig B) until
the alarm stops.
3. Immobilize the user interface. After 21 to 25 seconds the pre-alarm
sounds and the backlight flashes. Immediately move the unit to cancel
the alarm.
Instructions for Use
4. Immobilize the user interface again and do not cancel the pre-alarm.
After approximately 10 seconds of pre-alarm, the main alarm sounds,
the alarm icon (
intermittently.
5. Simultaneously press and hold the left and right buttons (Fig B) to
cancel the alarm.
6. To switch off, again press and hold the left and right buttons (Fig B)
until the display clears, then immediately release the buttons.
High-pressure leak test
The high-pressure leak test is not intended as a functional test of the HUD.
See the HUD instructions for use if the HUD does not operate as
described.
1. Place the face mask next to the breathing apparatus (within three feet
of the pressure module).
2. Press the reset button (Fig J, Item 1) to switch off the positive
pressure. Press and rotate the bypass button (Fig J, Item 3) to align
the red spots and then release the button to switch off the bypass.
3. Open the cylinder valve (counterclockwise) slowly, but fully, to
pressurize system. The Sentinel 7000 and HUD systems activate as
follows:
a. The Sentinel 7000 emits a single tone and commences a self-test
recommend torque of sequence (refer to Section 3.1.1).
b. Up to approximately 45 seconds after the start of the self-test, all
six HUD LEDs (Fig M) will flash twice to indicate that the Sentinel
7000 is communicating with the HUD.
c. Depending on cylinder pressure, some of the four HUD LEDs (red/
amber/green/green) flash (on for 15 seconds/off for 45 seconds).
4. Close the cylinder valve and observe the user interface display. The
pressure reading shall not decrease more than 300 psi over
20 seconds.
If the breathing apparatus fails this test, or an immediate leak is evident, do
not continue with the test. Vent the pressure, switch off the system and
contact Dräger for repair.
Optional electronic leak test
The optional electronic leak test is not intended as a functional test of the
HUD. See the HUD instructions for use if the HUD does not operate as
described.
1. Place the face mask next to the breathing apparatus (within three feet
of the pressure module).
2. Press the reset button (Fig J, Item 1) to switch off the positive
pressure. Press and rotate the bypass button (Fig J, Item 3) to align
the red spots and then release the button to switch off the bypass.
3. Press the left and right buttons of the user interface (Fig B) to activate
the self-test sequence.
○ Up to approximately 45 seconds after the start of the self-test, all
six HUD LEDs (Fig M) will flash twice to indicate that the
Sentinel 7000 is communicating with the HUD. The cylinder
contents LEDs then flash on for 15 seconds and off for 45 seconds
continuously (the number of LEDs depends on the cylinder
pressure).
4. When the perform leak test icon (
button (Fig B).
5. The open valve icon (
switch off clockwise.
○ Open the cylinder valve before the last segment switches off or the
low-pressure icon (
○ If the cylinder pressure is low and falls below a preset threshold
during pressure stabilization, the low-pressure icon (
briefly and the self-test restarts.
6. Immediately open the cylinder valve. A single tone sounds and the
screen alternates between the close cylinder valve icon (
press right button icon (
7. Immediately close the cylinder valve and then press the right
button (Fig B). Pressure stabilizing starts, the wait icon (
and the radial segments switch off clockwise.
8. When stabilizing is complete a single tone sounds, the leak test timing
icon ( ) displays, and the radial segments switch off clockwise.
9. When timing is complete a single tone sounds and the test result is
shown:
a. The leak test passed icon (
Observe the notice below and continue to the EOSTI/whistle test.
b. The leak test failed icon (
and repair the fault (see Section 5), and then repeat the leak test.
The leak test passed icon (
EOSTI/whistle test must be completed within that time or the unit resets
and the self-test restarts.
EOSTI/Whistle test
1. Cover the outlet port of the lung demand valve with the palm of the
hand and press the front button (Fig J, Item 2).
2. Carefully lift the palm of the hand to slowly vent the system until the
EOSTI alarms activate, and observe the pressure displayed on the
user interface.
○ The whistle and electronic EOSTI must activate within the preset
pressure range (see EOSTI Alarms in Section 10). Due to the
activation tolerance, they may not activate at exactly the same
time.
3. Allow the system to vent fully. The display shows zero pressure and all
user interface LEDs (Fig J, Item 3) flashes at approximately one
second intervals.
4. Press and hold the left and right buttons of the user interface (Fig B)
until the display clears, then immediately release the buttons.
○ After approximately 180 seconds all six HUD LEDs flash twice to
indicate that it has logged off from the Sentinel 7000.
5. Press the reset button (Fig J, Item 1) to switch off the positive
pressure.
4.6.6 Changing the Sentinel 7000 personal identity information
Upload information from a user ID card into the user interface as follows:
1. Locate and hold the user ID card on to the back of the user interface,
directly behind the screen.
2. Press the left and right buttons of the user interface (Fig B) to start the
self-test sequence.
3. When the personal identity screen (Fig G) displays, immediately press
the left button (Fig B). The screen briefly illuminates and the radial
segments begin to switch off clockwise.
4. The system copies the data from the transponder embedded in the
card to the memory in the user interface. When the full data upload is
complete, the screen displays the tick icon (Fig Z).
) displays, and all the user interface LEDs flash
) displays, press the left
) displays and the radial segments begin to
) displays briefly and the self-test restarts.
) displays
).
) displays,
) indicates a passed leak test.
) indicates a leak test fail. Investigate
) displays for up to three minutes. The
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