3362443 (A3-D-P) – Page 2 of 4
PSS 5000 Series
Self-contained breathing apparatus with Sentinel TX Gauge
Instructions for Use
i
3.1.2 Preparation for use
i
i
NOTICE
If the TX Gauge fails to switch on or a low battery alarm activates,
renew the batteries.
1. Carry out a visual inspection of the apparatus (see Section 3.5.1).
2. Install the batteries if necessary (see Section 3.5.3).
3. Pair the TX Gauge with one or more compatible PASS devices if
required (see PASS device Instructions for Use).
4. Fit the air cylinder (see Section 3.5.2).
5. Press the male coupling of the lung demand regulator hose into the
female coupling of the medium-pressure hose until an audible click is
heard (do not connect the regulator to the face mask at this stage).
6. Press the reset button (Fig 3, Item 1) to switch off the positive pressure.
Press and rotate the bypass button (3) to align the red spots and then
release the button to switch off the bypass.
7. Carry out a full functional test of the apparatus (see Section 3.6).
8. Align and push the lung demand regulator into face mask port until it
latches in position, and check the attachment by gently attempting to
pull the coupling apart.
3.2 Putting on the apparatus
1. Fully loosen the shoulder straps and waist belt and put on the breathing
apparatus.
2. Check that the shoulder pads are not twisted and take the weight of
the system on the shoulders by pulling the shoulder straps. Do not fully
tighten at this stage.
3. Close the waist belt buckle and pull the ends of the waist belt forward
until the strap padding fits securely and comfortably over the hips
(Fig 4). Tuck the belt ends behind the waist pad.
4. Pull the shoulder straps until the breathing apparatus rests securely
and comfortably on the hips. Do not over tighten. Pull the strap
retainers down to secure the strap ends (Fig 5).
5. Fully loosen the head straps of the face mask and place the neck strap
over the back of the neck.
6. Press the reset button (Fig 3, Item 1) to switch off the positive pressure.
7. Open the cylinder valve (counterclockwise) slowly, but fully, to
pressurize system. The TX Gauge switches on automatically when
the cylinder valve is opened if the pressure in the air cylinder is
approximately 200 psi or greater. The TX Gauge then performs a self
check.
○ f the TX Gauge passes the self check the green LED will begin to
flash once every second to indicate that it is switched on.
○ f the TX Gauge fails the self check during start up, or if a hardware
failure occurs during use, the error alert activates (flashing of the
amber LED at 2 second intervals for 10 seconds). Report the fault
to trained service personnel. Do not use the breathing apparatus
until the fault condition is rectified.
i
i
NOTICE
After storage at temperatures below 32 °F (0 °C) leakage may be
observed when the cylinder valve is initially opened due to ice
formation.
● If leakage is observed from the
lung demand regulator
:
Press the front button (Fig 3, Item 2) to allow a rush of air
to pass through the lung demand regulator and then quickly
press the reset button (Fig 3, Item 1) to switch off the positive
pressure. Resume normal operation.
● If leakage is observed from the
quick connect cylinder
coupling
: Close the cylinder valve and vent the system.
Disconnect then reconnect the cylinder to the breathing
apparatus, then reopen the cylinder valve slowly, but fully, to
pressurize the system. Resume normal operation.
● In the event that leakage still occurs, remove the breathing
apparatus from service and report the fault to trained service
personnel or contact Dräger.
!
WARNING
For use in a CBRN environment, use only the face mask sizes that
have been confirmed by a quantitative fit test (QNFT).
8. Put on the face mask and check for tight fit (for non-CBRN use see
the Dräger FPS 7000 Face Mask Instructions for Use; for CBRN
use see the FPS NFPA Lung Demand Regulator and CBRN Special
Instructions).
3.3 During use
!
WARNING
Fully open all cylinder valves and ensure that they remain open
during use.
Users should be in a safe area before the end-of-service-time
indicator (EOSTI) warning commences. Evacuate to a safe area
immediately if the warning commences during an operation.
Using the bypass button (Fig 3, Item 3) will use air from the
cylinder and rapidly reduce the working duration of the apparatus.
● Regularly check the remaining cylinder pressure on the gauge.
● Press the illumination button (Fig 2, Item 1) to illuminate the face of the
TX Gauge with a white LED for approximately 3 seconds.
● If additional air is required, briefly press and release the bypass button
(Fig 3, Item 3) to deliver a single jet of air into the face mask.
!
WARNING
The emergency air flow procedures below may greatly reduce the
operating duration of the air supply. When activated the user must
immediately evacuate to a safe area. The reason for using the
procedure must be investigated and repaired before reusing the
apparatus.
● Additional air flow required (emergency procedure only used in
the unlikely condition of low or blocked airflow) – Press and rotate
the bypass button (Fig 3, Item 3) to deliver a sustained air supply
(85 to 130 liters/minute) into the face mask.
● Excessive or loss of air flow (emergency procedure only used in
the unlikely condition of high or loss of airflow) – Close the cylinder
valve then immediately begin to slowly reopen the valve. Use the
cylinder valve as a regulating valve to set the air flow to meet the user
requirement. This procedure can be used with screw-type and ratchet-
type cylinder valves.
3.3.1 Low pressure warning
When the pressure in the air cylinder reaches a preset pressure range (see
Section 8), the face of the TX Gauge will be illuminated by a flashing red
LED and the low cylinder pressure warning whistle will sound.
i
i
NOTICE
The warning whistle and flashing red LED will activate within the
preset pressure range. Due to the actuation tolerance, they may
not activate at exactly the same time.
The red LED will switch off when the pressure in the air cylinder drops
below 145 psi. The whistle will continue to sound until the cylinder pressure
reaches zero.
3.3.2 Low battery warning
When the battery power reaches a low level, the amber LED on the
TX Gauge will begin to flash once every 5 seconds. Replace the batteries
at the earliest opportunity (see Section 3.5.3).
3.3.3 TX Gauge visual signals
The visual signals provided by the TX Gauge are shown in the table below.
Visual signal
Explanation
Flashing green LED
Gauge is switched on
Flashing red LED
Low cylinder pressure
Flashing amber LED once every
5 seconds
Low battery
Flashing amber LED at 2 second
intervals for 10 seconds
Failed self check or hardware fault
Solid green LED
Attempting to establish
communication with PC Link
Module
Flashing green and amber LEDs
Communicating with PC Link
Module
Solid green and white LEDs;
flashing red LED
Attempting to pair with PASS
device
Alternating flashing white and
green/amber LEDs
Successfully paired with PASS
device
Alternating flashing red and amber
LEDs
Unable to pair with PASS device
3.4 After use
!
WARNING
Do not remove the breathing apparatus until in a safe breathing
environment.
!
CAUTION
Do not remove the face mask by pulling on the lung demand
regulator as this may damage the equipment.
1. Loosen the face mask straps. As the seal between the face mask and
the face is broken, press the reset button (Fig 3, Item 1) to switch off
the positive pressure. Fully remove the face mask and extend all of the
straps of the head harness.
2. Close the cylinder valve.
3. Press the front button (Fig 3, Item 2) to vent system and then press
the reset button (Fig 3, Item 1) to switch off the positive pressure. The
TX Gauge will switch off automatically when the pressure drops below
145 psi.
4. Release the waist belt buckle.
5. Lift the shoulder strap ends to release the strap retainers (Fig 5) and
then lift the shoulder strap buckles to loosen the straps.
6. Remove the breathing apparatus and face mask.
7. If the lung demand regulator has been set to bypass, press and rotate
the bypass button (Fig 3, Item 3) to align the red spots and then
release to switch off the bypass.
8. Carry out the after use tasks in the maintenance table (Section 5.1).
9. Remove the air cylinder if required (Section 3.5.3).
10. Pass the breathing apparatus to the service s department with details
of any faults or damage that occurred during use.
3.5 Common user tasks
3.5.1 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 components, hoses
and connectors. 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.
3.5.2 Air cylinder fitting and removing
!
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 an air
cylinder.
Impact damage to the cylinder valve or first-stage regulator
connector may prevent valve connection or cause an air leak.
Handle the air cylinder and breathing apparatus with care.
i
i
NOTICE
The following instructions are for a threaded cylinder coupling.
Fitting a quick-connect cylinder coupling is detailed in a separate
document (see the Quick-Connect Cylinder Coupling User
Instructions).
Fitting the cylinder
1. Check the threads of the cylinder valve port and the first-stage
regulator. Ensure that the O-ring seal (Fig 6, Item 1) in the first-stage
regulator is clean and undamaged.
2. Lay the backplate horizontally, with the first-stage regulator uppermost,
and fully extend the cylinder strap.
3. Insert the cylinder through the loop of the strap, and align the valve
with the regulator.
4. Lift the cylinder and backplate into the vertical position (supported on
the end of the cylinder opposite the valve).
5. 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.
6. Place the unit back into the horizontal position.
7. Take up the slack in the cylinder strap (Fig 7).
8. Pull the strap over the cylinder to operate the cam lock (Fig 8) and
secure using the Velcro fastening.
Removing the cylinder
1. Close the cylinder valve and press the front button (Fig 3, Item 2) to
fully vent the system.
2. Lay the backplate horizontally, with the cylinder uppermost.
3. Remove the free end of the cylinder strap from the Velcro.
4. Lift the strap against the cam lock to release the buckle tension and
loosen the strap.
5. Disconnect the cylinder valve from the first-stage regulator.
6. Lift the cylinder away from the first-stage regulator and remove the
cylinder.
3.5.3 Fitting or replacing the batteries
!
WARNING
Danger of explosion or fire. Do not remove or install the batteries
in an explosive atmosphere.
Explosion, fire or chemical hazard. Do not expose the batteries to heat
sources, do not attempt to recharge any non-rechargeable battery and
do not short out the battery terminals.
Risk of explosion if a battery is replaced by an incorrect type. Use
only the recommended battery type.
!
CAUTION
Environmental hazard. Dispose of used batteries in accordance
with national or local regulations.
● Use only the recommended battery type: Panasonic CR123A 3 V
lithium.
● Replace the batteries with a matching set. Do not mix new and used
batteries.
● Remove discharged batteries from the product.
1. Remove the battery cover using a 2.5 mm hexagon key, and remove
the discharged batteries (see Fig 9).
2. Note the polarity shown in the battery compartment and install the
new batteries.
3. Check the cover and sealing ring. Lightly coat the sealing ring with
Dow Corning 111 silicone grease (as a guideline, the grease should be
felt on the fingers but not seen).
4. Align and refit the cover. Gently tighten (nip up) the screws. Dräger
recommend a torque of 0.4 lbf ft (0.5 Nm) – do not over tighten.
3.6 Functional testing
!
WARNING
Failure of the breathing apparatus to meet any of the standards
or parameters described in the functional tests indicates a system
fault. Report the fault to trained service personnel or contact
Dräger. Do not use the breathing apparatus until the fault condition
is rectified.
Assemble the breathing apparatus as described in the preparation for use
(see Section 3.1) before commencing any functional testing.
Leak test and low pressure warning test
1. Press the reset button (Fig 3, Item 1) to switch off the positive pressure.
Press and rotate the bypass button (Fig 3, Item 3) to align the red spots
and then release the button to switch off the bypass.
2. Open the cylinder valve slowly, but fully, to pressurize the system.
During pressurization a momentary sounding of the whistle will occur
and the TX Gauge will switch on automatically.
3. Fully close the cylinder valve.
4. After 20 seconds, check the contents gauge and then reopen the
cylinder valve. The gauge must not show an increase in pressure
of more than 300 psi. If the pressure increase is more than 300 psi,
investigate and repair the fault (see Section 4), and then repeat the
leak test.
5. Fully close the cylinder valve.
6. Cover the outlet port of the lung demand regulator with the palm of
the hand and press the front button (Fig 3, Item 2) to switch on the
positive pressure.
7. Carefully lift the palm of the hand to very slowly vent the system
until the low pressure warning activates, and observe the pressure
displayed on the gauge.
i
i
NOTICE
The warning whistle and flashing red LED will activate within the
preset pressure range. Due to the actuation tolerance, they may
not activate at exactly the same time.
8. The low pressure warning must begin to sound in the range:
○ 216 psi cylinder: 819 psi to 732 psi
○ 4500 psi cylinder: 1665 psi to 1485 psi
9. Continue to vent the system until it is fully exhausted.
10. Press the reset button (Fig 3, Item 1) to switch off the positive pressure.
4
Troubleshooting
The troubleshooting guide shows fault diagnosis and repair information
applicable to breathing apparatus users. Further troubleshooting and
repair information is available in Instructions for Use supplied with
associated equipment.
Where the troubleshooting guide shows more than one fault or remedy,
carry out repair actions in the order that they appear in the table.
Contact service personnel or Dräger when the remedy information
indicates a service task, or if the symptom remains after all remedy actions
have been attempted.
