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PSS BG-4. 20-Hour Training Course for Mine Rescue Trainees. What is What…PSS BG-4. Full Face Mask Connecting Piece Exhalation Breathing Hose Dust Sieve CO 2 Absorber Breathing Bag. What is What…PSS BG-4. Relief Valve Minimum Valve Breathing Air Cooler Constant Metering

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Pss bg 4

PSS BG-4

20-Hour Training Course for

Mine Rescue Trainees


What is what pss bg 4
What is What…PSS BG-4

  • Full Face Mask

  • Connecting Piece

  • Exhalation Breathing Hose

  • Dust Sieve

  • CO2 Absorber

  • Breathing Bag

Drager PSS BG 4 AP/CP - June 2004


What is what pss bg 41
What is What…PSS BG-4

  • Relief Valve

  • Minimum Valve

  • Breathing Air Cooler

  • Constant Metering

  • Inhalation Breathing Hose

  • Drain Valve

Drager PSS BG 4 AP/CP - June 2004


What is what pss bg 42
What is What…PSS BG-4

  • O2 Cylinder

  • Cylinder Valve

  • Pressure Reducer

  • Switch-Box

  • Sentinel

  • Sensor

Drager PSS BG 4 AP/CP - June 2004


What is what sentinel
What is What…Sentinel

  • Digital Display, O2 pressure in psi

  • Tome to Whistle up to 700 psi residual pressure warning in minutes

  • Icon for minutes

  • Yellow panic button – Manual Distress Signal Unit

  • RH Button

Drager PSS BG 4 AP/CP - June 2004


What is what sentinel1
What is What…Sentinel

  • Green LED

  • “Tally” – Automatic Distress Signal Unit

  • Red LED’s

  • LH Button

  • Analog O2 Display

Drager PSS BG 4 AP/CP - June 2004


Preparation for operation removing the protective cover
Preparation for OperationRemoving the Protective Cover

  • With the thumbs, push the two sliding bolts towards the center…

  • Then tilt upwards until they engage…

  • Open the protective cover until the safety catch and two plugs at the bottom edge are disengaged…

  • Unhook the plugs and remove the protective cover.

Drager PSS BG 4 AP/CP - June 2004


Filling and fitting co 2 absorber
Filling and Fitting CO2 Absorber

  • Unlock pawl and open clamps (four clamps)

  • Remove cap and stabilizer disk

  • Place refill cartridge on filling station

Drager PSS BG 4 AP/CP - June 2004


Filling and fitting co 2 absorber1
Filling and Fitting CO2 Absorber

  • Place strainer in bottom, arched side and ribs facing downward.

  • Insert lower filter mat into refill cartridge and position evenly on top of the bottom strainer.

Drager PSS BG 4 AP/CP - June 2004


Filling and fitting co 2 absorber2
Filling and Fitting CO2 Absorber

  • Pour Dragersorb 400 soda lime into the sieve. Strain and remove the soda dust.

  • Fill the refill cartridge,

  • First up to the 30% and then up to the 60%.

  • Gently knock against the side of the housing with your hand to settle the soda lime.

  • Fill the refill cartridge up to the mark and repeat the settling process.

  • The soda lime must be alternately filled into the cartridge and compressed until it cannot settle any more.

Drager PSS BG 4 AP/CP - June 2004


Filling and fitting co 2 absorber3
Filling and Fitting CO2 Absorber

  • Lightly coat the O-ring on the cap with Molykote 111.

  • Place cap on filter mat, press into position and knock against side until cap is flush.

  • Then fit stabilizer disk and secure both cap and stabilizer disk with four clamps.

  • Remove refill cartridge from filling station and shake it lightly to hear whether the soda lime has been sufficiently settled.

  • Top off with soda lime if a rustling sound is heard.

  • The CO2 concentration of the breathing air may be elevated during service if refill cartridge has not been properly filled with soda lime.

Drager PSS BG 4 AP/CP - June 2004


Co 2 refill cartridge leak test
CO2 Refill Cartridge – Leak Test

  • Seal outlet port with cap R 22 086

  • Fit test cap R 33 799 to inlet valve and secure bayonet ring R 34 185

  • Seal relief valve port with plug R 20 738

  • Connect refill cartridge to test unit via test hose. Build up a negative pressure to 10 mbar. Set test unit to “leak test”. There are no leaks in the refill cartridge if pressure does not change by more than 1 mbar after 1 minute. If the pressure change is higher, check O-ring in cap and replace if necessary.

Drager PSS BG 4 AP/CP - June 2004


Pss bg 4

  • Note the fill mark, DO NOT OVERFILL.

  • Place filter mat on top of the packed soda lime bed and position it evenly in the refill cartridge. Place upper strainer with ribs upward.

Drager PSS BG 4 AP/CP - June 2004


Battery
Battery

  • NEVER REPLACE THE BATTERY IN POTENTIASLLY EXPLOSIVE AREAS!

  • Failure to follow this warning could lead to death or serious injury,

Drager PSS BG 4 AP/CP - June 2004


Installing changing the battery
Installing / Changing the Battery

  • Using a 2 mm-hexagon key, remove the three screws from the battery cover.

  • Carefully remove the cover.

Drager PSS BG 4 AP/CP - June 2004


Installing changing the battery1
Installing / Changing the Battery

  • Insert the battery into the recess of the cover with the (+) terminal located as shown.

  • Check the sealing gasket is correctly positioned and not damaged.

  • Lift the Sentinel to the vertical position – line up the battery and cover and pressing on the cover insert the battery into battery compartment.

  • While holding the cover in position, relocate the three screws and using a 2 mm-hexagon key secure the cover. DO NOT OVERTIGHTEN

Drager PSS BG 4 AP/CP - June 2004


Installing changing the battery2
Installing / Changing the battery

  • During the assembly and on connection of the battery the Sentinel will begin the “Self Check” sequence.

  • Battery test where icon shown for battery life. Icon remains on the display for approximately 4 seconds during which period the bar graph counts down (left to right).

  • Software version is also displayed during this period. Software version number 900 for PSS BG 4 CP and 902 for PSS BG 4 AP.

Drager PSS BG 4 AP/CP - June 2004


Installing changing the battery3
Installing / Changing the Battery

  • At the end of the sequence a single audible “Sweep” alarm is emitted and the display momentarily shows icon “a” (icon “b” – tally fitted).

  • The display changes – returning to “operating mode” . The green LED continuously flashes.

  • Simultaneously press the right and left hand button until a single sharp audible “Beep” sounds.

  • Release buttons. Sentinel switches off.

Drager PSS BG 4 AP/CP - June 2004


Installing the o 2 cylinder
Installing the O2 Cylinder

  • Ensure that the connections are not soiled with oil or grease.

  • To avoid death or serious injury never allow pressurized O2 to come into contact with oil, grease, or similar contaminants.

  • It could cause either a fire or an explosion or both

Drager PSS BG 4 AP/CP - June 2004


Installing o 2 cylinder
Installing O2 Cylinder

  • Grasp the bottom of the O2 cylinder and position it in its compartment.

  • Screw in the manual connection. BY HAND ONLY!

  • Pull strap through buckle and secure the Velcro fastener.

  • Tension the mechanical anti-vibration device and hook it into the manual connection.

Drager PSS BG 4 AP/CP - June 2004


Closing the protective cover
Closing the Protective Cover

  • First slide in rim, then hook the two plugs at the bottom edge of the protective cover.

  • Close protective cover, then,

Drager PSS BG 4 AP/CP - June 2004


Closing the protective cover1
Closing the Protective Cover

  • Tilt the two sliding bolts to the front and,

  • Slide them outwards, BOTH BOLTS MUST ENGAGE.

Drager PSS BG 4 AP/CP - June 2004


Preparation for use when using the ice pack
Preparation for UseWhen Using the Ice Pack

  • The air cooler can be filled with ice to reduce the temperature of the inhaled air and thereby minimize discomfort for the wearer.

  • Operation without ice pack is permitted only when ambient air temperatures are below 32º F.

Drager PSS BG 4 AP/CP - June 2004


Preparing the ice pack
Preparing the Ice Pack

  • Fill the ice receptacle with water up to 2”. Leave to freeze completely at approximately 5ºF for at least 16 hours in deep freezer. Then fill the ice receptacle up to the rim with water and leave to freeze again for another 8 hours in deep freezer. Ensure that the ice receptacle is not tilted so that a level surface is obtained.

  • To remove ice pack: Briefly hold the ice receptacle under running water.

Drager PSS BG 4 AP/CP - June 2004


Fitting the ice pack
Fitting the Ice Pack

  • Ice packs which are small, broken up or not completely frozen, will reduce available service time!

Drager PSS BG 4 AP/CP - June 2004


Fitting the ice pack1
Fitting the Ice Pack

  • Remove the protective cover.

  • Remove cover from air cooler, insert ice pack and tightly replace cover. Mark (venting hole) must point upwards.

  • For control purposes: Check the cylinder manual connection, it must be tight. ONLY TIGHTEN BY HAND.

  • Close protective cover.

Drager PSS BG 4 AP/CP - June 2004


Fitting the ice pack2
Fitting the Ice Pack

  • The protective cover is designed to protect the interior components against mechanical damages.

  • For this reason, the protective cover must be used at all times.

  • Failure to follow this warning could lead to death or serious injury.

Drager PSS BG 4 AP/CP - June 2004


Checking correct functioning battery test and high pressure leak test
Checking Correct FunctioningBattery Test and High Pressure Leak Test

  • Open the O2 cylinder valve.

  • Sentinel switches on when the O2 cylinder pressure exceeds 145 psi.

Drager PSS BG 4 AP/CP - June 2004


Checking correct functioning battery test and high pressure leak test1
Checking Correct FunctioningBattery Test and High Pressure Leak Test

  • Sentinel begins the “self-check sequence” automatically.

  • Sentinel monitors all inputs and displays all icons.

  • This display shown here appears if no-fault is found.

Drager PSS BG 4 AP/CP - June 2004


Automatic battery test
Automatic Battery Test

  • Battery test where icon shown for battery life

  • Icon remains on the display for 4 seconds during which period the bar graph counts down (left to right).

  • Software version is also displayed during this period.

Drager PSS BG 4 AP/CP - June 2004


Checking the battery capacity
Checking the Battery Capacity

  • Symbol: Battery Okay

  • Battery does not need to be replaced

  • Symbol: Battery Warning 1

  • On power up a long beep (acoustic alarm) will sound and the display will show “Battery Warning 1” icon. When this icon is first displayed, it is acceptable to safely use the PSS BG 4 for up to 4 hours (start of special functions such as back lighting will reduce battery capacity).

Drager PSS BG 4 AP/CP - June 2004


Checking the battery capacity1
Checking the Battery Capacity

  • Symbol: Battery Warning 2

  • In this case the red LED’s flash constantly. On powering up 5 short beeps will sound and the display will show the “Battery Warning 2” icon. Sentinel automatically powers off and blocks any further operation.

Drager PSS BG 4 AP/CP - June 2004


Checking the battery capacity2
Checking the Battery Capacity

  • If battery warning 2 is displayed, the battery must be replaced before any new operation. Failure to follow this warning could lead to death or serious injury.

Drager PSS BG 4 AP/CP - June 2004


High pressure leak test
High Pressure Leak Test

  • Preconditions: O2 cylinder must be charged to at least 2600 psi, otherwise the Sentinel will not carry out the test.

Drager PSS BG 4 AP/CP - June 2004


High pressure leak test1
High Pressure Leak Test

  • Open the cylinder valve.

  • The icon “Close cylinder valve” appears on the display, the backlight is on, and a double alarm beep sounds when the pressure is greater than 2600 psi.

  • Close cylinder valve

    After 15 seconds when PSS BG 4 is okay:

  • The icon “Open Cylinder valve” appears on the display, the backlight is on, and the countdown process of the bar graph continues.

    THE HIGH PRESSURE LEAK TEST HAS BEEN PASSED SUCCESFULLY

Drager PSS BG 4 AP/CP - June 2004


High pressure leak test2
High Pressure Leak Test

  • Keep cylinder valve closed.

  • Remove sealing cap, wait until Sentinel shows 0 psi.

  • Replace sealing cap on the plug-in coupling.

    Switching off the Sentinel

  • Simultaneously press the right and left hand buttons until a single sharp audible “beep” sounds.

  • Release buttons

  • For 3 seconds Sentinel shows the battery status

  • Sentinel switches off

Drager PSS BG 4 AP/CP - June 2004


High pressure leak test3
High Pressure Leak Test

If a system error is detected during the high pressure leak test:

  • The X icon appears on display

  • Alarm beeps

  • Four times

Drager PSS BG 4 AP/CP - June 2004


Pss bg 4
NOTE:

  • PSS BG 4 must not be used if a fault is detected! An X icon with “Fault Code” displayed indicates a “Failed Self Check”.

  • RETURN SENTINEL TO DRAGER SAFETY.

Drager PSS BG 4 AP/CP - June 2004


Sentinel function test
Sentinel Function Test

  • The Sentinel function test described in the Chapter “Checking Correct Functioning” on page 18 can be carried out without opening the O2 cylinder valve. In this case momentarily press the left button. The Sentinel is switched on and automatically carries the following tests.

  • Internal self-test sequence

  • Battery test

  • After successful Sentinel function test

  • The following display is shown and

  • The red LEDs flash

  • Switch the Sentinel off

Drager PSS BG 4 AP/CP - June 2004


Sentinel function test1
Sentinel Function Test

  • DANGER – The PSS BG 4 MUST never be used in this operating state because the O2 cylinder valve is closed.

  • Failure to follow this warning could lead to death or serious injury.

Drager PSS BG 4 AP/CP - June 2004


Sentinel function test2
Sentinel Function Test

  • In case of malfunction

  • Battery warning 1 or 2; in this case, replace the battery immediately and repeat the inspection.

  • System error; the display shows the X symbol; with an error code the acoustic alarm sounds four times.

Drager PSS BG 4 AP/CP - June 2004


Donning of the pss bg 4
Donning of the PSS BG 4

Open the waist belt:

  • Press the latches together and

  • Unhook

    Open both shoulder straps:

  • Press the metal clamp upwards with your thumb and at the same time,

  • Pull the long end with your other hand

Drager PSS BG 4 AP/CP - June 2004


Donning of the pss bg 41
Donning of the PSS BG 4

  • Place the PSS BG 4 upright and hang the breathing hoses over the protective cover.

Drager PSS BG 4 AP/CP - June 2004


Donning of the pss bg 42
Donning of the PSS BG 4

  • Reach through the shoulder straps with both arms and lift up the PSS BG 4

Drager PSS BG 4 AP/CP - June 2004


Donning of the pss bg 43
Donning of the PSS BG 4

  • Lift the PSS BG 4 over your head, keeping your head between the breathing hoses, and let the PSS BG 4 slide down your back until the shoulder straps rest on your shoulders.

Drager PSS BG 4 AP/CP - June 2004


Donning of the pss bg 44
Donning of the PSS BG 4

  • Uniformly tighten the shoulder straps so that the padding on the waist belt rests on your hips.

Drager PSS BG 4 AP/CP - June 2004


Donning of the pss bg 45
Donning of the PSS BG 4

  • Close and adjust the waist belt so that it fits securely.

Drager PSS BG 4 AP/CP - June 2004


Donning of the pss bg 46
Donning of the PSS BG 4

  • Pull the ends of the belt until the PSS BG 4 rests firmly on your hips.

  • Insert the ends of the belt in the loops on the right and left hand sides. Then loosen the shoulder straps slightly.

Drager PSS BG 4 AP/CP - June 2004


Fitting the full face mask
Fitting the Full-Face Mask

  • Only use full-face masks of the Panorama Nova RP series.

  • WARNING: Strictly follow the instructions for the Use of the full-face mask and if applicable, of BGComm.

Drager PSS BG 4 AP/CP - June 2004


Start up
Start-Up

  • Remove sealing cap from plug-in coupling, breathe deeply and hold your breath.

  • Press the coupling into the full-face mask connector until it engages.

Drager PSS BG 4 AP/CP - June 2004


Start up1
Start-up

  • As soon as the plug-in coupling engages, open O2 cylinder valve completely or at least two turns and breathe into the PSS BG 4.

  • Sentinel automatically switches on and performs the following tests:

  • Internal self-test sequences

  • Battery test, and

  • Offers high pressure leak test

  • If the high pressure leak test is not done, Sentinel will go into normal service

Drager PSS BG 4 AP/CP - June 2004


Danger
DANGER

  • If the low pressure warning signal sounds, either the O2 cylinder valve is closed or the O2 cylinder is empty.

  • The PSS BG 4 must not be used if the warning signal sounds again after opening the O2 cylinder valve of the full O2 cylinder.

  • Failure to follow this warning could lead to death or serious injury.

Drager PSS BG 4 AP/CP - June 2004


Checking readiness for use
Checking Readiness for Use

  • Tightly squeeze both breathing hoses and breathe in until a vacuum is produced. Hold your breath for an instant: The vacuum must be maintained, otherwise the straps on the full-face mask must be tightened.

Drager PSS BG 4 AP/CP - June 2004


Checking readiness for use1
Checking Readiness for Use

  • Watch Sentinel

  • Press the left button briefly to switch on the scale illumination (goes out automatically after a short time). Push button longer than 3 seconds, the display will then show the period of use in minutes from the commencement of use.

    When PSS BG 4 is Okay:

  • Green LED Flashes

  • Display: all segments and at least 2,600 psi

  • Start work.

Drager PSS BG 4 AP/CP - June 2004


Checking readiness for use2
Checking Readiness for Use

In the event of a failure:

  • Red LEDs flash

  • Alarm bleeps

    WARNING

    PSS BG 4 must not be used if a failure is detected!

    Failure to follow this warning could lead to death or serious injury

Drager PSS BG 4 AP/CP - June 2004


Practical use
Practical use

  • The PSS BG 4 operates fully automatic. Absorption CO2 generates heat which can be felt, particularly when working under aggravated conditions with intense breathing. This is perfectly normal and indicates that the PSS BG 4 is functioning correctly.

  • The period of service and retreat must be planned independently of the lower pressure warnings. The mission must always finish when the last low pressure warning output is at approximately 145 psi.

Drager PSS BG 4 AP/CP - June 2004


In emergency
In Emergency

If the O2 supply is not high enough for your work rate or malfunctions occur:

  • Press the bypass valve slightly. Additional O2 is supplied to the breathing circuit.

  • DO NOT USE THE BYPASS VALVE TO DE-FOG THE FACEPIECE

Drager PSS BG 4 AP/CP - June 2004


Danger1
DANGER

  • Retreat immediately if a malfunction occurs

  • Failure to follow this warning could lead to death or serious injury.

Drager PSS BG 4 AP/CP - June 2004


Sentinel in operation
Sentinel in Operation

  • The mode display contains information displayed during operation.

  • The system pressure is monitored constantly and displayed both digitally (as numerical value) and in analog form (as a bar graph).

  • The green LED flashes to indicate that Sentinel is operating normally.

  • Regularly check the O2 supply in 15-minute intervals using Sentinel.

  • The lower the numerical value indicates the remaining period of use in minutes until 700 psi residual pressure warning is generated.

  • Press left-hand button shortly – the back lighting is switched on for 5-seconds.

  • Press right-hand button shortly – now the temperature (in ºC) is displayed instead of time-to-whistle. It will automatically switch back.

Drager PSS BG 4 AP/CP - June 2004


Sentinel in operation1
Sentinel in Operation

  • Press left-hand button shortly – the back lighting is switched on for 5-seconds.

  • Press right-hand button shortly – now the temperature (in ºC) is displayed instead of time-to-whistle. It will automatically switch back.

  • When Tally is removed, the “motion sensor is activated”.

  • The motion detector icon is displayed.

  • When Tally is replaced, the motion sensor is deactivated.

  • The alarm icon is displayed.

Drager PSS BG 4 AP/CP - June 2004


Panic button
Panic Button

Should the wearer require help and assistance, then pressing the yellow panic button activates the Main Audible Alarm Signal – Distress Signal Unit (DSU).

  • To start the “main alarm” – press the yellow panic button in center of the Sentinel.

  • Alarm flashes red LEDs

  • The Alarm icon is displayed

Drager PSS BG 4 AP/CP - June 2004


Panic button1
Panic Button

  • To switch off the “main alarm” simultaneously press and hold RH and LH buttons until the alarm stops.

  • Then release the buttons.

  • The display changes – returning to “operating mode”.

Drager PSS BG 4 AP/CP - June 2004


Motion sensor
Motion Sensor

Functioning as an Automatic Distress Signal Unit (ADSU).

  • Remove the “Tally” to activate the Motion Sensor.

  • If no motion is detected, a “pre-alarm” sounds after approximately 25 seconds – if any movement is detected within a further approximately 10 seconds of “pre-alarm”, the alarm is cancelled.

Drager PSS BG 4 AP/CP - June 2004


Motion sensor1
Motion Sensor

  • To switch “Off” the “main alarm” simultaneously press and hold down the RH and LH buttons until the alarm stops.

  • Then release the buttons.

  • The display changes – returning to “operating mode”

Drager PSS BG 4 AP/CP - June 2004


Motion sensor2
Motion Sensor

Back Light

  • To illuminate the display press and release LH button.

  • Display illuminates for a period of approximately 5 seconds.

Drager PSS BG 4 AP/CP - June 2004


Temperature
Temperature

  • Press the RH button shortly.

  • Now the temperature (ºC) is displayed instead of time-to-whistle.

  • It will automatically switch back.

Drager PSS BG 4 AP/CP - June 2004


Residual pressure warnings
Residual Pressure Warnings

  • The first residual pressure warning is generated when the pressure drops below 700 psi.

    Alarm: Intermittent for 30 seconds

    Red LEDs: Flash Constantly

    Approximately 75% of the O2 in the cylinder has now been consumed.

  • The last residual pressure warning is generated when the pressure reaches approximately 145 psi.

    Alarm: Intermittent bleep, continuous

    Red LEDs: Flash constantly

    Approximately 95% of the O2 in the cylinder has now been consumed.

Drager PSS BG 4 AP/CP - June 2004


Residual pressure warnings1
Residual Pressure Warnings

  • WARNING! – The mission must be ended and PSS BG 4 taken off when the pressure reaches 145 psi. Failure to follow this warning could lead to death or serious injury.

Drager PSS BG 4 AP/CP - June 2004


After use
After Use

  • Unplug the coupling from the full-face mask

  • Press the button and at the same time,

  • Pull out the plug-in coupling

  • Immediately after pulling out the plug-in coupling close the O2 cylinder valve.

  • The air is automatically let out of the breathing circuit.

Drager PSS BG 4 AP/CP - June 2004


Switching off the sentinel
Switching off the Sentinel

  • Simultaneously press the right and left hand button until a single sharp audible “Bleep” sounds.

  • Release buttons.

  • For 3 seconds Sentinel shows the battery status.

  • Sentinel switches off.

Drager PSS BG 4 AP/CP - June 2004


Mounting the sealing cap
Mounting the Sealing Cap

  • Replace the sealing cap on the plug-in coupling.

Drager PSS BG 4 AP/CP - June 2004


Removing the full face mask
Removing the Full-Face Mask

  • Refer to the relevant instructions for Use

Warning: Strictly follow the instructions for the Use of the Full-Face Mask and, if applicable, of the BGComm.

Failure to follow this warning could lead to death or serious injury.

Drager PSS BG 4 AP/CP - June 2004


Doffing of the pss bg 4
Doffing of the PSS BG 4

  • Press locking lever, and

  • Take out the hook.

  • Draw the breathing hoses over your head and lay them on the protective cover behind you.

  • Open both shoulder straps: slide the metal clamps upwards with your thumbs.

Drager PSS BG 4 AP/CP - June 2004


Doffing of the pss bg 41
Doffing of the PSS BG 4

  • Slowly let the PSS BG 4 slide down your back and place it upright on the ground. DO NOT DROP IT!

  • Have PSS BG 4 serviced immediately after use.

  • Note: ENSURE THAT THE PSS BG 4 IS TRANSPORTED IN AN UPRIGHT POSITION SO THAT THE CONDENSATE IN THE BREATHING HOSES CAN GATHER IN THE DRAIN VALVE AND/OR BREATHING BAG.

Drager PSS BG 4 AP/CP - June 2004


Removing the o 2 cylinder
Removing the O2 Cylinder

  • Ensure that the connections are not soiled with oil or grease.

  • To avoid death or serious injury never allow pressurized O2 to come into contact with oil, grease, or similar contaminants. It could cause either death or serious injury.

Drager PSS BG 4 AP/CP - June 2004


Removing the o 2 cylinder1
Removing the O2 Cylinder

  • Close the O2 cylinder valve

  • Release the anti-vibration device

  • Open the Velcro closure and pull the strap out of the buckle.

  • Unscrew the manual connection. ONLY BY HAND!

  • Hold the O2 cylinder at the bottom, tip it, and lift it out.

Drager PSS BG 4 AP/CP - June 2004


Detaching the breathing hoses breathing air cooler and co 2 absorber
Detaching the Breathing Hoses Breathing Air Cooler and CO2 Absorber

  • Open the two loops on the shoulder straps: Press the clamp outwards and pull strap out of clamp.

  • Turn bayonet ring counter-clockwise until it disengages, then remove the breathing hose.

  • Drain the condensate which has collected in the breathing hoses during use.

Drager PSS BG 4 AP/CP - June 2004


Detaching the breathing hoses from the plug in coupling
Detaching the breathing hoses from the Plug-in Coupling

  • Turn bayonet ring counter clockwise until it disengages, then push it back and remove the breathing hoses

Drager PSS BG 4 AP/CP - June 2004


Dismantling the plug in coupling
Dismantling the Plug-in Coupling

  • Draw the inhalation and exhalation valves out of the plug-in coupling

  • Pull the valve disk out of both valve seats

Drager PSS BG 4 AP/CP - June 2004


Removing co 2 absorber
Removing Co2 Absorber

  • Remove the breathing bag: enlarge the nozzle with the aid of the handle tabs and pull it off.

Drager PSS BG 4 AP/CP - June 2004


Removing co 2 absorber1
Removing Co2 Absorber

  • Press handle of safety clip together and pull angled connector out of the CO2 absorber.

  • Raise tensioning bar, grasp connector and lift up.

  • Lift CO2 absorber out of lower retaining bracket and then out of the carrying frame.

Drager PSS BG 4 AP/CP - June 2004


Removing the air cooler
Removing the Air Cooler

  • Remove the breathing bag: Enlarge the sleeve with the aid of the handle tabs and pull it off.

  • Raise tensioning bar.

  • The plug-in connector is secured. To Release: Press circlip down and at the same time pull off metal connector of blue medium pressure hose.

Drager PSS BG 4 AP/CP - June 2004


Removing the air cooler1
Removing the Air Cooler

  • Lift out the air cooler, remove cover and drain condensate as well as melted ice.

  • Removing the Relief Valve

  • Hold relief valve by its hose connector and swing approximately 45° to the right.

  • Press clamps together until they disengage from spring tension bar.

  • Remove relief valve.

Drager PSS BG 4 AP/CP - June 2004


Dismantling the relief valve
Dismantling The Relief Valve

  • Remove Valve Cover

  • Detach steeped valve disk from the valve cover

  • Remove valve disk

  • Removing Breathing Bag, Drain Valve, and Minimum Valve

  • Lift safety knob and pull black lever off to the right.

  • Lift safety knob and pull black lever off.

Drager PSS BG 4 AP/CP - June 2004


Dismantling the relief valve1
Dismantling the Relief Valve

  • The plug-in connector is secured, to release:

  • Disconnect yellow medium-pressure hose from pressure reducer: Press circlip down on pressure reducer port and pull off metal connector at the same time.

  • Press bar off pin and pull safety clip with bar.

Drager PSS BG 4 AP/CP - June 2004


Dismantling the relief valve2
Dismantling the Relief Valve

  • Pull drain valve out of the retaining clip

  • Remove breathing bag with pressure plate, drain valve and minimum valve from housing.

  • Remove drain valve: Enlarge the sleeve with the aid if the handle tabs and pull it off.

  • If necessary, detach pressure plate from the breathing bag.

Drager PSS BG 4 AP/CP - June 2004


Dismantling the relief valve3
Dismantling the Relief Valve

  • Remove minimum valve: enlarge the sleeve with the aid of the handle tabs and pull off.

  • The plug connector is secured. To release:

  • Press circlip down and at the same time pull off metal connector of yellow medium pressure hose. Fit plug R 33 790 onto hose connection to seal it.

Drager PSS BG 4 AP/CP - June 2004


Dismantling the drain valve
Dismantling the Drain Valve

  • Unscrew cover and,

  • Remove valve disk.

Drager PSS BG 4 AP/CP - June 2004


Cleaning and disinfecting
Cleaning and Disinfecting

  • ALL PARTS WHICH COME IN CONTACT WITH EXHALED AIR MUST BE THOROUGHLY CLEANED AND DISINFECTED AFTER USE.

  • The other parts should only be cleaned if necessary.

Drager PSS BG 4 AP/CP - June 2004


Cleaning
Cleaning

  • All parts must be cleaned in lukewarm water with a mild detergent.

  • Wipe the Switch Box and Sentinel with damp cloth.

  • Rinse in clear water. Detergent residues must be thoroughly rinsed off all parts of the PSS BG 4.

Drager PSS BG 4 AP/CP - June 2004


Disinfection
Disinfection

  • Immerse the parts in disinfectant bath using Multidor F®, Incidur®, or Airkem A-33™

  • Caution! Strictly Follow the instructions for Use of the Disinfectant.

  • Rinse thoroughly under running water.

Drager PSS BG 4 AP/CP - June 2004


Drying
Drying

  • Maximum temperature 140º F.

Drager PSS BG 4 AP/CP - June 2004


Charging o 2 cylinder
Charging O2 Cylinder

  • The maximum charging pressure is 3135 psi.

  • The O2 must have a purity >99.5% and must be both tasteless and odorless.

  • Permissible impurities in depressurized gas: Maximum water vapor concentration: 50 mg/m3

Drager PSS BG 4 AP/CP - June 2004


Assembling the pss bg 4
Assembling the PSS BG 4

  • Fitting Shoulder straps

  • Fitting Sentinel

  • Fitting Waist Belt

  • These will be done by Team Benchman

Drager PSS BG 4 AP/CP - June 2004


Fitting drain valve minimum valve and breathing bag
Fitting Drain Valve, Minimum Valve and Breathing Bag

  • Fitting the Drain Valve

  • Insert valve pin into guide hole

  • Position spring on the center of the valve disk.

  • Screw lid in a hand-tight way.

Drager PSS BG 4 AP/CP - June 2004


Fitting drain valve minimum valve and breathing bag1
Fitting Drain Valve, Minimum Valve and Breathing Bag

  • Attach the drain valve to sleeve on the breathing bag.

Drager PSS BG 4 AP/CP - June 2004


Fitting the minimum valve
Fitting the Minimum Valve

  • Press the ring and at the same time remove the sealing plug R33 690 from the minimum valve and insert the yellow medium pressure valve until it engages

  • Attach the minimum valve to the breathing bag, so that the rocker of the minimum valve and the marking of the breathing bag line up.

Drager PSS BG 4 AP/CP - June 2004


Fitting the breathing bag
Fitting the Breathing Bag

  • Attach the pressure plate to the breathing bag if necessary.

  • Slide the breathing bag with accessories into the PSS BG 4.

  • Note: The button securing the lever points upward (see Arrow)

  • Insert the minimum valve outlet through the hole and secure the safety clip.

  • Note: The minimum valve rocker arm should be below the pressure plate.

  • Press the drain valve into the clip.

Drager PSS BG 4 AP/CP - June 2004


Fitting the air cooler
Fitting the Air Cooler

  • Slide the air cooler onto the two metal pins and;

  • Secure it with the tensioning bar.

  • Press down firmly the laid on the air cooler, the marking (venting hole) must point upwards.

  • Attach sleeve of the breathing bag to the air cooler connector.

Drager PSS BG 4 AP/CP - June 2004


Connecting the medium pressure hoses on air cooler
Connecting the Medium-Pressure Hoses – On Air Cooler

  • Insert the blue medium-pressure hose metal connector until it engages and secure with clips at side

Drager PSS BG 4 AP/CP - June 2004


On pressure reducer
On Pressure Reducer

  • Connect yellow medium-pressure hoses from minimum valve to pressure reducer, insert hose metal connector until it engages

Drager PSS BG 4 AP/CP - June 2004


Fitting the co 2 absorber
Fitting the CO2 Absorber

  • Insert the CO2 absorber into the slit of the metal bracket, and secure it with the tensioning bar.

  • Attach sleeve of the breathing bag to the CO2 absorber connector.

Drager PSS BG 4 AP/CP - June 2004


Fitting the black lever
Fitting The Black Lever

  • Fit the black lever.

Drager PSS BG 4 AP/CP - June 2004


Fitting the relief valve
Fitting the Relief Valve

  • Examine the O-ring of the relief valve. It must be clean and undamaged. Replace if necessary, thinly coat with Molykote 111 and assemble the relief valve.

  • Fit the relief valve. Insert it into the two slits in spring bar from below, by pressing both clips on the relief valve together at same time.

Drager PSS BG 4 AP/CP - June 2004


Fitting the relief valve1
Fitting the Relief Valve

  • Examine the O-ring of the angled connector. It must be clean and undamaged, otherwise it must be replaced. Rub with Molykote 111.

  • Turn the relief valve 45° to the left to lock it.

  • Open safety clip. Slide the angled nozzle into the CO2 absorber and close the safety clip so that it engages.

Drager PSS BG 4 AP/CP - June 2004


Fitting the plug in coupling
Fitting the Plug-in Coupling

  • Fit the exhalation valve. Insert the plug on the valve disk into the central hole of the exhalation valve housing and pull until undercut becomes visible.

  • Fit the inhalation vale the same way.

  • Insert both valve housings into the plug-in coupling. They have different diameters and therefore cannot be confused.

  • Examine the O-ring. It must be clean and undamaged, otherwise it must be replaced. Apply a thin coat of Molykote 111.

  • Fit the sealing cap.

Drager PSS BG 4 AP/CP - June 2004


Fitting the breathing hoses
Fitting the Breathing Hoses

  • The breathing hoses must not be twisted. To avoid twisting, pay attention to the position of the mould parting seams.

  • This mould parting seams of the breathing hose and the connections for the air cooler and CO2 absorber must line up.

  • The mould parting seams of the breathing hose and plug-in coupling are offset 90° to one another. The connector points upwards.

  • Slide three reinforcing rings over each of the two breathing hoses.

  • Slide the bayonet ring over the ends of each breathing hose.

Drager PSS BG 4 AP/CP - June 2004


Fitting the breathing hoses1
Fitting the Breathing Hoses

  • Slide the breathing hose with long sleeve onto the connector of the breathing air cooler.

  • Slide the short sleeve of the breathing hose onto the short connector of the plug-in coupling.

  • Slide the second breathing hose with short sleeve onto the connector of the CO2 absorber.

  • Slide the long sleeve of the breathing hose onto the long connector of the plug-in coupling.

  • Secure the four ends over the sleeves and connectors and turn them clockwise until they engage.

  • Secure both breathing hoses to the shoulder safety loops. Push the end of the loops under the hoses.

Drager PSS BG 4 AP/CP - June 2004


Fitting the springs
Fitting the Springs

  • Fit the two springs between the pressure plate on the breathing bag and the tensioning bar.

  • Install the O2 cylinder

Drager PSS BG 4 AP/CP - June 2004


Testing of the pss bg 4
TESTING OF THE PSS BG 4

  • Turn over to Team Benchman for testing.

Drager PSS BG 4 AP/CP - June 2004


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