Invacare IRC301, IRC501, IRC301O2, IRC501O2 User manual

C	RE
INVACA

FACTORY REPAIR CENTERS

(OHIO)
CORPORATE		HEADQUARTERS
899 CLEVELAND STREET
ELYRIA, OHIO		44036
(ELORIDA)
INVACARE	RESPIRATORY PRODUCTS
699 AERO	LANE
_ SANFORD,	FLORIDA 32771

MOBILITE BY INVACARE 2101 E. LAKE MARY BLVD. SANFORD, FLORIDA 32773

(TEXAS)

INVACARE FORT WORTH, TX DIST. CENTER 1825 WESTPARK DRIVE

GRAND PRAIRIE, TX 75050

(CALIFORNIA)

INVACARE CALIFORNIA DIST. CENTER 14030 E. 183RD STREET

LA PALMA, CALIFORNIA 90623

INVACARE TECHNICAL SERVICES “HOTLINE” 1-800-832-4707

CHOOSE		ONE OF THE FOLLOWING OPTIONS
“1”	FOR:	ELECTRONICS
“2”	FOR:	RESPIRATORY PRODUCTS
“3”	FOR:	HOMECARE BEDS, RECLINERS, LIFT-OUT CHAIRS
		AND THERAPEUTIC SUPPORT SURFACES
“4”	FOR:	ANYTHING ELSE

INVACARE’	TECHNICAL TRAINING 1-800-333-6900 X6697 ELYRIA, OHIO
— A

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SHIPPING AND HANDLING

	SHIPPING		AND	HANDLING	INSTRUCTIONS
This	Service Manual describes, in detail,			the Invacare 3, 5	and 6	Oxygen Concentrators.		It has	been
carefully written to explain concentrator				operation, service and		preventative	maintenance. Before
you	install and operate the concentrator,			please refer to	OWNER'S MANUAL.
The	Invacare concentrator should always be kept in the upright position to prevent						cabinet damage		while
being	transported. The shipping container has been designed to assure . maximum						protection	of the	con-
centrator.
If the	concentrator is to be	reshipped	by common carrier, it should			be packed in a	new carton.	Additional
cartons are available from		Invacare.

The air compressor suspension system has been engineered to withstand severe motion and orientation.

UNPACKING	(FIGURE 1)
1. Check for	any obvious damage to the carton or its contents. İf damage is evident, notify the carrier, or
Invacare.

2. Remove ail loose packing from the carton.

3.Carefully remove all the components from the carton.

NOTE: After	inspection,	unless the Invacare	Oxygen	Concentrator is to be used immediately, re-
tain carton	and packing	materials for use in	storing	until use of the concentrator is required.

INSPECTION

1. Examine exterior of the Invacare Oxygen Concentrator for nicks, dents, scratches or other damages. inspect all components.

STORAGE

1. Store the repackaged Invacare-Oxygen Concentrator ina dry area. 2, DO NOT place other objects on top of the repackaged concentrator.

Relief	for			Relief	for Line
Flowmeter		|	.	Cord	to	face
to face				Back	of	Unit.
Front	of
Unit.

FIGURE 1 - UNPACKING

POWER CONSUMPTION FORMULA

If a customer inquires as to the amount of electricity needed to run a concenirator and / or their monthly operating costs, here’s the formula :

								IRC301
								Example
Wattage Rating			of Concentrator				Watts	350
Hours per Day of Usage						x	Hours ©	12
Number	of	Days	in Month			x	Days	30
Divide	by	1000				+	1000
~Equals	: Kilowatt		Hours	(KWH)		=	KWH	126
To Calculate Monthly Operating Cost:
Obtain	the	KWH	Rate	from	your
electric	bill	and	Multiply :			x	$/ KWH	$.08
Equals:	Monthly		Operating		Cost	=$		$ 10.08

SEMINAR FEEDBACK FORM

[1 Home O2 Systems (PLEASE CHECK APPROPRIATE BOX)

Instructor:

Location:

Date:

In an effort to continually	improve the		quality	of this	seminar, we would like		you	to rate us	and provide us with
your comments and suggestions regarding this course.
Please check the	box	which	most closely		reflects	your judgement		of the	following	areas:
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1.Contents of Seminar

2.Instructor

3.Service Manuals

4.Format

5.Equipment and Materials

Additional Comments and Suggestions:

Optional Information

Name:

Company:

Phone:

TABLE OF CONTENTS

Section1

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Installation and Sequence of Operation... 1-6
Sens 02 Illustration ......c.secceeerereeeeasareneescasenecarcorenaaenenasscoracoennerensenaeno 1-10
Pneumatic Diagram ΟΡ		μμ 1-11

Section2

Preventive Maintenance Record		.......sseccsseccessercerssennensssnnersssennnenaceucess	2-1
4-Way Va e C7ea7n/9 ProOceOO		aneaasanarzsasananz	2-4
Compressor Rebuilding Instructions...			2-8
7 o77gs 2679	6	rr rannsarneraonosa	2-17

Section 3

7ou//e Зпоойпа RC	307507 инииинииииииитенивниииние		3-1
Trouble Shooting IRC	3LX/5LX/6LX...............	rennes	3-9

Section4

Parts Replacement Procedures urnes 4-1 to 4-30

Section		5
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Mo/ex	Co77ecfo7C 7		ri vzivivene	5-2
Pilot Valve Poppet Replacement Kit Instructions cesser				5-9
Venture		Homefill Literature	0000050007000000 000000*400088 0 040 00000 00000 00000 …042 00000 8 0 04	4008

INVACARE

TECHNICAL TRAINING 1-800-333-6900 X6697 ELYRIA, OHIO

FEATURES

Power indicator

Oxygen Outlet

Power Switch

Circuit Breaker

Elapsed Time

Meter

Cabinet Filter

(2) ea.

FEATURES

amacapPmnan

FEATURES - 3LX, SLX

Power Indicator Sens02 Status	Indicator Lights (5LXO2,
5LXO2T, 6LXO2 and 6LXO2T ONLY)
Oxygen Outlet С)

	Kl<		д
			Circuit	Breaker
	Power Switch
	1
	Elapsed	Time	Cabinet Filter
	Meter
			(2)	ea.

FEATURES - 5LXO2, 5LXO2T, 6LXO2, 6LXO2T

1-1

MOBILAIRE Ill /V

SPECIFICATIONS OBILAIREModelI IRC301(Νορ,/ 501

MOBILAIRE lit / V #5:

SPECIFICATIONS, CONTINUED

Filters:	Cabinet		.
	Compressor Inlet
	In-Line
	Exhaust
	Bacteria
Safety Systems:	Current		overload	or	line surge	shutdown.
	High	temperature		compressor		shutdown.
	High	pressure alarm			w/compressor shutdown.
	Low pressure alarm w/compressor shutdown.
	Battery Free™ Power Loss Alarm
	Flow Sentry™ Flow Monitor
	SensO2		Oxygen	Monitoring System

		GRC30102			/	IRC50102)
Width:	18-inches			(45.7		cm)
Height:	23.75-inches				(60.3		cm)
Depth:	14-inches			(35.6		cm)
Weight:	54	lbs.	(24.5		kg)		(IRC501/IRC50102)
	51	lbs.	(23.2		kg)		(IRC301 /IRC30102)
Shipping Weight:	64	lbs.	(29.1		kg)		(IRC501/IRC50102)
	61	Ibs.	(27.7		kg)		@RC301/IRC30102)

Operating

Temperature

Exhaust:

Less

than

Ambient

+ 35°F

(+16°C)

Oxygen Outlet:

Less

than

Ambient

+

4°F

(+2°C)

Cabinet:

Impact resistant flame-retardant plastic

cabinet.

Regulatory

Listing:

ETL

certified

complying

with

UL 544

and UL 1431

Recommended End-User Guidelines for

Optimum

Performance:

‘Temperature:

32°

-

95°F

(0°

- 35°C)

-

Electrical:

No

extension

cords

Placement:

No

closer than 3-inches

from

wall

‘Tubing:

50 ft.

maximum

(do

NOT pinch)

Room

Characteristics: — *

Smoke and soot-free

No

confined

spaces

(closet)

Relative

Humidity:

20 to

90%

Time

of

Operation:

-Not

less than 30-minutes

at

a

time

Up to 24 hours per day

Flow

Rate:

From

5

I/min.

or 3

l/min. to 1/2 Y/min. For flows less

.

than

1/2

1/min.,

use

Mobilaire

Pediatric

Flowmeter.

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Innovation0Henk Care ~	1-2

MOBILAIRE Ill /V

Model IRC301 / 501

MOBILAIRE IlIll /V “a“Sensosenso,.

STANDARD SPECIFICATIONS

Electrical Requirements:

Rated Current Input:

Sound Level;

Operating Altitude:

Ambient ‘Temperature Range:

Oxygen Output:

.

Concentration Levels:

. s Alarm Threshoids:

(RC30102/ IRC50102)

Flow, adjustable in 0.5 liter increments:

Power Consumption:

Pressure Relief Mechanism operates at:

SPECIFICATIONS

SPECIFICATIONS

120

VAC,

60

Hz

5.0 А

ERC501

/IRC50102)

3.5

A(IRC301 / IRC30102)

52

dB

Average

([RC301

/ IRC30102)

53

dB

Average

(IRCS01

/ IRCS0102)

Up

to

6,000

ft.

(1828 meters) above sea level without

degradation

of performance. From 6,000 ft.

(1828 meters) to 13,129 ft. (4000 meters) below

90%

efficiency.

32°F

-

95°F

(0°

- 35°C)

1/2

to

5

min.,

5 psi

+ 0.5 psi

.

(34.5

kPa +

3.45 kPa) (IRC501

/ TRCSO102)

1/2

to

3

/min,,

5 psi + 0.5 psi

(345 kPa + 3.45 kPa) (RC301

/ IRC30102)

IRC501

/ IRC50102

IRC301

/ IRC30102

95%

+

2%

at

1

Ymin.

95%

+

2% at 1-2 Yenin.

95%

+

2% at

2

l/min.

92%

+

3%

at 3 /min.

95%

+

2%

at

3

Ymin.

94%

+

3%

at

4

Ymin.

91%

=

4%

at

5

/min.

.

Indicators

Internal Switch

Internal Switch

O,

Purity

Set

at

73%

Set

at

85%

Over

85%

(22%)

Green

©

Green

©

73%

(238)

085%

(22%)

Yellow

Red

m

Continuous Audible Alarm

Sieve-GARD™ Compressor

Shut-Dowa

Below

73%

(23%)

Red

m

Continuous Audible

Alarm:

Sieve-GARD™ Compressor

Shut-Down

-

1/2

- 5

min.

(ERCS01 / IRC50102)

1/2 - 3 /min.

ŒRC301 /IRC30102)

450W

(ARC501

/ IRC59102)

350%

(RC301

/ IRC30102)

35

psi

+

3.5

psi

(241

kPa

+

24.1

kPa)

Call: Toll Free 1-800-333-6900

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1-3

S P

E C 1

F

i C A T 1 O N S

SPECIFICATIONS

SPECIFICATIONS

STANDARD

SPECIFICATIONS

Electrical

Requirements:

120

VAC

+10%

(132 VAC/108 VAC), 60 Hz

Rated

Current Input:

3.6

A

(3LX)

3.4 A (5LX, 5LXO2, 5LXO2T, 6LX02, 6LXO2T)

Sound

Level:

52

dB

Average (3LX)

53

dB Average (SLX, 5LXO2, 5LXO2T, 6LXO2, 6LXO2T)

Operating

Altitude:

Up

to

6,000 ft. (1828 meters) above sea level without degradation of

performance.

From 6,000 ft. (1828 meters) to 13,129 ft. (4000 meters) below

90%

efficiency.

Ambient

Temperature Range:

50°F

- 95°F

(10°

- 35°C)

*Oxygen

Output

Concentration

Levels:

@LX,

5LXO2,

5LXO2T,

6LXO2,

GLXO2T)

(3LX)

95.6%

to

93%

at

1-3 Umin.

95.6%

to

93%

at

1-2 L/min.

95.6%

to

91%

at

4

Limin.

95.6%

to

87%

at

3 Limin.

95.6%

to

87%

at

5

Limin.

95.6%

to

87%

at

6

Umin.(6LXO2,

6LX02T)

* Stated

performance

maximum achieved

after 30 min. of run time.

Maximum

Outlet

Pressure:

(LX,

5LXO2,

5LXOZT,

6LXO2,

6LXO2T)

(SLX)

5 psi

+ 0.5

psi.

5 psi+

0.5 psi.

(34.5

kPa

+

3.45

kPa.)

(34.5

kPa

+

3.45

kPa.)

SensO2 Alarm Thresholds:

lf no internal selector switch, 73% operation ONLY.

Flow Range:

Power Consumption:

Pressure Relief Mechanism Operational at:

Indicators

02 Purity

Internal

Switch

Internal

Switch

*Set at 73%

Set at

85%

Over 85%

(+ 2%)

GREEN

Indicator

Light

GREEN

Indicator Light

73% (+

3%)

to

85% (42%)

YELLOW

Indicator

Light

RED

indicator Light -

Continuous. Audible

Alarm

Sieve

GARD™

Compressor

Shutdown

Below

73%

(+

3%)

RED

Indicator Light

-

N/A

Continuous

Audible

Alarm

Sieve

GARD™

Compressor

Shutdown

* Factory Preset at 73%

1/2 - 5 Umin. (LX, SLXO2,

5LXOZT,

6LXO2,

6LXO2T)

12 - 3

L/min.

3LX)

For flow rates less than 1/2

L/min., use

the

Invacare

Pediatric

Flowmeter

PF16.

460W (6LXO2, 6LXO2T) 350W/400W (LX)

400W (SLX, 5LX02, 5LX02T)

35 psi + 3.5 psi (241 kPa + 24.1 kPa)

SPECIFICATIONS

SPECIFICATIONS,

CONTINUED

5

Filters:

Cabinet

E

Compressor

inlet

Bacteria

A

Safety

Systems:

Current overload or line surge shutdown.

F

High

temperature

compressor shutdown.

|

High pressure alarm w/compressor shutdown.

©

Low pressure alarm w/compressor shutdown.

A

Battery Free™ Power Loss Alarm.

Es

SensO2

Oxygen

System

(5LX02,

5LXO2T, 6LX02,

6LXO02T

ONLY).

|

Width:

18-inches (45.7 cm)

o

Height:

23.75-inches (60.3 cm)

N

Depth:

14-inches (35.6 cm)

S

Weight:

54

Ibs.

(24.5

kg)

(All

SLX

and 6LX Models)

53 lbs. (23.9 kg.) (3LX)

‘Shipping

Weight:

59

Ibs.

(27

kg) (All

SLX and

6LX

Models) 58

Ibs.

(26.1

kg.)

(SLX)

Operating

Temperature

.

Exhaust:

Less

than

Ambient

+

359

F

(+169

C)

„Oxygen

Output:

|.

Less

than

Ambient

+

49F

(+29

C)

Cabinet:

Impact Resistant flame-retardant plastic cabinet.

Regulatory

Listing:

ETL certified complying with applicable portions of UL 1431

RECOMMENDED END-USER GUIDELINES FOR OPTIMUM PERFORMANCE:.

Temperature:

50°

- 95°F

(10°

- 35°C)

Electrical:

No

extension

cords.

Placement:

No closer than 3-inches from any wall.

Tubing:

Crush-Proof

Tubing

- 50

feet (15.2 m.) maximum

(do

NOT

pinch).

Room

Characteristics:

Smoke and soot-free

No

confined

spaces

(closet).

Relative

Humidity:

20

to

60% .

Time

of

Operation:

Up

to

24 hours per

day.

1-5

INSTALLATION AND

SEQUENCE OF OPERATION

INSTALLATION AND SEQUENCE OF OPERATION

Model IRC30102 | IRC50102 — Serial Numbers 93D to Present

pMOBILAIRE Y Y Е Sa,

Model IRC301 — Serial Numbers 90E to Present

Model IRC501 — Serial Numbers 90F to Present

INSTALLATION

When

your new

Mobilaire concentrator attives, it should

be checked

for

proper

operating

conditions.

1.

ifthe unit has been in below-freezing

temperatures, allow

it

to

warm

up for

30 minutes

at room temperature

before operating.

2.

The IRC301/501 will need to

be turned on

for

a few

seconds

to

charge the Battery Free™ Alarm Circuit.

Connect power cord to receptacle and

tum

on

concentrator.

Tum

flow

control knob

counterclockwise

and

flow will begin immediately.

Set flow

of the Mobilaire

HI

to

3

/min.

and Mobilaire

V

to 5 l/min. Tum

unit

off.

3.

With the power cord unplugged, press

On/Off switch to the “on” position. An audible alarm will sound. This

checks the Battery Free“ Alarm Circuit. Tum

switch

“off.”

4.

Connect cord

to receptacle and turn on

concentrator.

3

BEEPS

on

startup. Check the

oxygen concentration

per

specifications after 30-40

minutes

running

time.

SEQUENCE

OF

OPERATION

Apply

120 VAC

via the power

switch

energizes

the

compressor motor,

hour meter,

cooling

fan

and the printed

circuit

(P.C.)

board.

Room

air enters the compressor via the

cabinet

filter,

air

inlet

filter,

and

sound

muffler. The

air

is compressed by

the wobble pistons in the compressor to a pressure of 20

PSI

(137.72

kPa), then

put

through

an

in-line filter.

*Units

built prior

to 90K will

run at 22

PSI (151.5 kPa).

As increased pressure creates increased temperature, a heat exchanger is utilized to lower the temperature by

20° F (-6.7° C) as the air enters the four-way solenoid valve. It is then channeled to a sieve bed containing the adsorption material. A restrictor downstream of the sieve bed causes pressure to build up inside the sieve bed which is necessary for the adsorption process. À small amount of relatively pure oxygen enters a storage tank with the balance entering the top of the second bed. The nitrogen removed is purged from the bed through the four-way

valve into room

air. A

filter is

located at the

exhaust-end of

the valve

to

muffle

the nitrogen

exhaust

as it enters

the

air.

The

oxygen not

being

used

to purge is channeled into

a storage tank. The pressurized oxygen is regulated down

to 5

PSI

(34.4 kPa), enters

an

accurate flow-measuring

device,

flows

through

abacterial filterand out to'thee pa

‘tient.

i

The

electrical

energization

of

the

solenoid valve

is accomplished

every

10 to 14 seconds by

the pressure sensor |

and

P.C. board

electronics

when

the pressure

set

point

of 20

PSIG

+

3

(137.72 kPa+ 51.32

kPa) is

reached. The

time.between

cycles is

dependent

on'altitude

and

flow

rate.

A "spring

in

the valve

allows

it to

return

to itsoriginal

position when de-energized.*

On

the

IRC501

/ 50102, a

2-way

pressure equalization valve

opens

just

prior

to

the shift

of

the4-way valve.This

allows high purity oxygen to enter the same bed from the top. This additional pressure allows the bed to start its cycle at a higher pressure. The 2-way valve will close just after the shift of the 4-way valve.

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EN		INSTALLATIONAND
Model IRC30102	/50102 *	SEOUENCE OF	OPERATION
	INSTALLATION AND SEOUENCE	OF OPERATION, CONTINUED

If power is interrupted, the Battery Free™ alarm	will sound a short “beep,”			with a	long pause, intermittently.	All
IRC301’s and IRC501’s are equipped with a diagnostic		alarm system	that	signals	if the system’s pressure or	elec-
trical system malfunctions. The‘Troubleshooting	Guide	explains the	alarm	system’s	signals and reasons in detail
for your convenience.

SensO, OXGYEN SENSOR TECHNOLOGY CERAMIC ZIRCONIA SENSOR Technical Description

The oxygen being produced by the concentrator flows out of the product tank and into the flowmeter. In-line between these components is a tee fitting that directs a small flow of oxygen through a precision orifice to the oxygen sensor mounted on the printed circuit board.

As the oxygen enters the sensor housing, it passes through a screen and contacts the electrode mounted on the top of the zirconia disk.

Electric current flowing to the top electrode and through the zirconia disk to the bottom electrode heats the disk to over 300° C. Oxygen molecules on top of the disk pick-up extra electrons and become oxygen ions. These

oxygen ions

are

attracted to the electrode on the bottom

of the

zirconia

disk. Because

of the crystal

structure

of

the

zirconia,

only

oxygen ions can pass through. Once

oxygen

ions

reach

the

bottom

electrode, the

extra electrons

are

released

from

the oxygen ions and oxygen molecules retum

to

the

air.

The

number of electrons

is directly

re-

lated to the oxygen concentration. The electrons travel to the PC board where they are “counted” and the oxygen concentration “reading” is calculated.

A micro-processor on the PC board contains software that interprets the signal being received from the sensor. It compares the signal to clinical acceptable limits that have been selected with the indicator switch mounted on the

PC board. Signals outside of the clinical acceptable limits

generate

responses

in the form

of

lighted LED’s,

au-

dible indicators, and/or system shut-down.

Operating Sequence

Once

the power

switch has been

turned to

ON,

the SensO2

circuit

will

wait

5

minutes

for

the

concentrator

fo

be-

- gin to produce

clinical

acceptable

oxygen

before activating. No LED’s

will

illuminate

for

at

least 5 minutes.

After

5 minutes, when oxygen purity exceeds 85% + 2% the green

LED

will

illuminate.

“If the

oxygen level

is

not above 85%

+ 2% after

‘the first 5

minutes, LED's

will remain

off. The system

will

wait

for a

maximum

of

30

minutes from start-up to reach 85%

+ 2% before activating an alarm. Environmental fac-

tors,

such as low voltage, high altitude, or age of the machine will

affect

the time

required

to

reach 85%

+

2%.

If the

oxygen level

is

not above 85%

+ 2%

within the first

30minutes,

the

oxygen

level alarm sequence

will

acti-

vate, depending upon the position of the indicator switch. All units are preset at the factory at 73% + 3%.

“ When oxygen concentration is above 85% + 2%, the sensor measures oxygen purity every 10 minutes. If a read-

ing falls below 85% + 2% and the alarm indicator is in the 73% mode, the oxygen sensor measures purity con- tinuously and a yellow LED will illuminate. If the oxygen purity falls below 73% + 3% the red LED / Alarm /

Shut-Down	mode will activate. If	the oxygen	purity falls	below 85%+ 2% with the indicator switch set at85%,
the red LED	/ Alarm / Shut-Down	mode will	áctivate.	o

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-

:

INSTALLATION/SEQUENCE OF OPERATION

INSTALLATION / SEQUENCE OF OPERATION MODEL 3LX and MODELS 5LX,5LX02, 5LXO2T, 6LXO2, 6LXO2T

INSTALLATION / VERIFICATION OF BATTERY FREE™ POWER LOSS ALARM

When your	new		Invacare	concentrator	arrives, it should	be checked for proper operating conditions.
1. Ifthe unit		has	been in	below-freezing	temperatures,	allow it to warm up to room temperature (approxi-
mately	30	minutes)		before operating.

2. The concentratorwill need to be tumed on for4to 5 seconds to charge the Battery Free! Power Loss Alam. Connect power cord to outlet and tum the concentrator on. Tum flow contro! knob counterclockwise and flow will

begin

immediately.

Set flow rate of the

Invacare

3 to

3

L/min.,

Invacare

5 to 5

L/min.

and the

Invacare 6 to 6

L/min.

Tum

unit

off.

3. Unplug

the power

cord and press

On/Off

switch

to the

ON position. An intermittent audible alarm will

sound. This confirms proper operation of

the

Battery

Free™

Power

Loss

Alarm.

Turn On/Off

switch

OFF.

4. Connect cord to outlet and turn on. concentrator. Unit will sound 3 BEEPS on startup.

5.Check the oxygen concentration per specifications after 30-40 minutes running time.

SEQUENCE

OF

OPERATION

Applying

120

VAC via the power switch. energizes the compressor motor,

hour

meter,

cooling

fan

and

the

printed

circuit

(P.C.)

board.

Room

air

enters

the

compressor

via the cabinet filter, compressor

inlet

filter,

and

sound

muffler.

The

air is

compressed

by

the

wobble

pistons

in the

compressor

to

a pressure

of

20

PSI

(137.72

kPa)

BEFORE

Serial

No.

"97K"

or 21 PSI (144.79 kPa) AFTER

Serial

No.

"97K".

As

increased

pressure

creates

increased

temperature,

a

heat exchanger

is

utilized

to

lower the

tempera-

ture

by

20° F

(6.7° C) before

the

air enters the.4-way valve.

itis

then channeled

to

a sieve

bed

containing '

the

adsorption

maierial.

A

restrictor downstream

of

the

sieve bed

causes pressure

to

build

up

inside

the.

. sieve

bed

which

is necessary

for

the

adsorption

process.

A

small

amount

of

relatively

pure

oxygen

enters

the

top

of

the

second bed with the balance

entering

a

storage tank. The nitrogen removed

is

exhausted

back

from

the

bed through the four-way valve into room

air. A muftler is located

at

the

exhaust

end

of

the

valve

to

muffle

the

sound

of

the

exhaust

as

it

exits

the

concentrator.

The

oxygen

not being used to exhaust is channeled

into the storage tank. The

pressurized

oxygen

is

regulated

down

to 5 PSI (34.4 kPa), enters an accurate

flow-measuring

device,

fiows

through

a bacterial

filter,

a

check

valve and out to the patient.

The

electrical

activation of the 4-way valve

is accomplished

every

8

to

21

seconds by the

pressure

sensor

and

P.C.

board

electronics

when

the

pressure

set

point

of 20

+

3

PSI

(137.72

+

51.32

kPa)

BEFORE

Serial

No.

“97K"

or

21

+

3

PSI

(144.79

+

51.32

kPa)

AFTER

Serial

No.

"97K"

is

reached.

The

time

between

cycles

is dependent

on

altitude, flow

rate and

internal

environmental

factors.

-

On

the

5LX/5LX02/5LXO2T/6LX02/6LXO2T,

a P.E. or

Pressure

Equalization

valve

opens

just

prior to

the

shift

of the

4-way valve.

This

allows

highly

concentrated

oxygen

to

enter

the

just exhausted

bed

from

the

top.

This

additional pressure allows the bed to start

its

cycle

at

a higher

pressure.

The

P.E.

valve

will

close

just

after

the

shift

of

the

4-way

valve.

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Q

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P

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A

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95

E

Q

U

E

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INSTALLATION / SEQUENCE OF OPERATION

INSTALLATION / SEQUENCE OF OPERATION, CONTINUED

If main power is lost, the Battery Free” Power Loss Alarm will sound a short "beep", with a long pause, intermittently. All units are equipped with a diagnostic alarm system that signals if the pneumatic pressure

or electrical systems malfunction. The Troubleshooting Guide		explains the	alarm system signals and
reasons	in detail for your convenience.	É
SENSO2	OXGYEN SENSOR TECHNOLOGY CERAMIC	ZIRCONIA	SENSOR

Technical Description

The oxygen being produced by the concentrator flows out of the product tank and into the flowmeter.

In-line between these	components is	a	tee	fitting	that directs a small flow of oxygen through a precision
orifice to the oxygen	sensor mounted	on	a	printed	circuit board.

As the oxygen enters the sensor, it passes through a screen and contacts the sensing disk.

Electric

current

flowing

through

a metal film resistor heats the

disk

in excess

of

300°C.

Oxygen

molecules

contact

the electrode

of

the

disk and

pick-up

extra

electrons

to become oxygen ions. These oxygen ions

are attracted to the electrode

on

the

bottom

of

the

zirconia

disk.

Because

of

the

crystal

structure of

the

zirconia, only oxygen ions can

pass through. When the oxygen ions reach the bottom electrode, the extra

electrons

are

released from the

oxygen

ions

and

oxygen

molecules

retum

to

the

air.

The

number

of

electrons

is directly related to the

oxygen

concentration.

The

electrons travel to the PC board where they

are “counted”

and the

oxygen

concentration

"reading"

is

calculated.

A microprocessor on the P.C.

board

contains

software

that

interprets

the signal

being

received

from

the

sensor.

It

compares

the signal

to

clinically acceptable

limits that

have

been

selected with

the

indicator

switch

mounted on

the

PC

board.

Signals

outside of the

clinically

acceptable

limits generate

responses

in

the form of lighted LEDs, audible indicators, and/or system shut-down.

Operating Sequence

Once	the power	switch has been turned ON, the SensO, circuit will			wait 5 minutes for the concentrator to
begin	producing	clinically acceptable oxygen	before	activating. No	LEDs	will illuminate for at least 5
minutes.
After	5 minutes,	if the oxygen purity exceeds	85% +	2% the GREEN	LED	will illuminate.

If the oxygen level is not above 85% + 2% after the first 5 minutes, LEDs will remain off. The system will

wait for a

maximum

of

30

minutes

from

start-up to

reach

85%

+

2% before

activating an alarm. Environ-

mental

factors

such as low voltage, high altitude,

or

age

of

the

machine

will

affect the

time required

to

reach

85%

+2%.

If the

oxygen

level

is not

above 85% +

2%

within

the first 30 minutes, the oxygen concentration alarm

sequence

will

activate,

depending

upon

the

position

of

the

indicator switch.

All units

are preset at

the

factory at

73%

+ 3%.

When oxygen concentration is above 85% + 2%, the sensor measures oxygen purity every 10 minutes.

If a reading	falls below 85% + 2% and the alarm indicator is			in the	73% mode or no			switch is present,			the
oxygen sensor measures purity continuously and a yellow				LED	will illuminate.		If	the	oxygen	purity	falls
below 73%	+	3% the	RED LED/Alarm/Shut-Down mode	will activate.		lf the	selector		switch	is present
and it is set	at	85%,	the RED LED/Alarm/Shut-Down mode will		activate	if the	oxygen		purity	falls below

85% + 2%.

SENSO, TECHNICAL ILLUSTRATION

T-PIECE

< FLOW METER “τρ <— GAS Ve PRODUCT

ORIFICE

SENSOR HOUSING

SCREEN

TOP ELECTRODE

ZIRCONIA DISK

BOTTOM

ELECTRODE

ELECTRONS TO PC BOARD

©

GAS (INCLUDES OXYGEN)

	OXYGEN		6
	+		<— ELECTRONS
OXYGEN	PICKS UP ELECTRONS
TO FORM OXYGEN			IONS
OXYGEN	IONS	PASS	THRU
	Y
OXYGEN IONS		RELEASE
	ELECTRONS
TO	FORM	OXYGEN
© ELECTRONS	,		ELECTRONS	EROM
	OXYGEN		TRANSFORMER

NEUMATIC DIAGRAM

P G

PNEUMATIC DIAGRAM

BACTERIA

FILTER

OXYGEN		FLOWMETER	TEST POINT #1
			$
ENRICHED
PRODUCT	|	À

TEST POINT #2	=
			RE		PRODUCT TANK
	FLOW	[|] .	SENSO!
	RESTRICTOR		92 SENSOR
‘OPTIONAL „7			'	pc.	BOARD
	OXYGEN			ВО	A
	SENSOR
	INPUT

SIEVE

COLUMN

AIR INLET

SOLENOID VALVE

MOBILAIRE Ill / V

Model IRC301 / 501

MOBILAIREill / V “#* SersO,

Model IRC30102 / 50102

CHECK VALVES .

ge

CROSSASSEMBLY-OVER - -

SIEVE

LA COLUMN

501 ONLY

RE.

VALVE

j

	GROSS		PARTICLE				os
		FILTER
FILTER	ASS'Y |				RELIEF		'
				VALVE
	RESONATOR				===		- FIUER
	>		AIR	.	HEAT
		COMPRESSOR				EXCHANGER

Call: Toll Free 1-800-333-6900

dnnovetionhhHeatth Care ~

1-1 1

						PNEUMATIC		DIAGRAM
		PNEUMATIC		DIAGRAM							P
											N
	INVACARE 3 & 5 OXYGEN CONCENTRATORS
											E
		MODELS	IRC3LX,	IRC5LX	IRC5LXO2						Y
		RESTRICTOR			TEST	POINT	2				M
											A
		ASSEMBLY			(BETWEEN PRODUCT		TANK AND
											T
BACTERI		IRC3LX &	CHECK	VALVES	CHECK	VALVE)
FILTER A		IRC5LX ONLY									I
	FLOWMETER										o
/		PRESSURE					RESTRICTOR				D
							is EXTERNAL			on	I
	Τη	REGULATOR
TEST POINT 1							IRC3LX ONLY,				A
		|
(OXYGEN CONCENTRATOR |				PRODUCT	TANK		It is	INTERNAL		to	G
OUTLET)
							P.E. VALVE		for		R
	FLOW							IRCSLX	&		A
								IRCSLXO2
RESTRICTOR											M

.

OPTIONAL

OXYGEN SENSOR

-ANS

P.C.BOARD

PI

RESTRICTOR

=

CROSSOVER ASSEMBLY

AIR INLET

- y CET] —

CABINET

(Goss PARTICLE)

FILTER

SIEVE

BED

SOLENOID	PILOT
VALVE

|

RESONATOR

AR

COMPRESSOR

| RELIEF VALVE

di IP

HEAT

EXCHANGER

SIEVE

sxsLxo | BED

SLXO2T/

6LXO2/ 6LXO2T ONLY!

РЕ. МАМЕ

CH

	|—	4-WAY VALVE
L	i

πι EXHAUST MUFFLER

LEGEND

_ ELECTRICAL Fora << =conNECTIONS

a ~I

2

INVACARE RESPIRATORY ©

OXYGEN CONCENTRATOR OPERATION

Invacare produces many models of Oxygen Concentrators.

Some of them are:

-IRC 301 3 Liter Machine

-IRC 501	5	Liter	Machine
-IRC3LX	3	Liter	Machine
-IRC5LX	5	Liter	Machine

-IRC5LXO,	5	Liter	Machine	with	Sensor	for O,	output
In the following		block	diagram	we	show a	typical	oxygen concentrator and its
componenis.

Item #1 The Gross Particle Filter

The gross particle filter (20 p.p.i.) is used to stop large particles of dirt (i.e. lint, animal fur, etc.) from entering the concentrator.

Item #2 Intake Filter (Filter Assembly)

This filter removes particles down to 1 micron in size. It is used primarily as a compressor filter.

Item

# 3

Resonators

This

device

does

nothing more than reduce noise from

the

intake

of

the

compressor.

(Muffler)

item

#4

Air

Compressor

The function of the compressor

is to compress

filtered air to an

average

maximum

working

pressure of approximately

20

p.s.i.

This

compressed

air is routed to

the molecular

sieve beds

which

require air under pressure to produce oxygen.

Invacare

uses

Thomas

brand

oil-less piston

compressors in

most of the

concentrator

we

manufacture.

Item

#4A

Capacitor

The capacitor is an electrical storage device used to help start the

compressor

motor.

INVACARE

TECHNICAL TRAINING 4-800-333-6900 X6697 ELYRIA, OHIO

1-13