Dräger Medical Oxylog 1000 Guide

5503.400
9036037
Revision 4.0
Because you care
Technical Documentation
Oxylog 1000
Emergency Ventilator

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K5503400IECIVZ.fm 15.03.06
I
Contents
General
1Symbols and Definitions 3
2Notes 3
Function Description
1General information on the Oxylog 1000 7
2Components of the Oxylog 1000 8
3Pneumatic Control (old Oxylog 1000) 10
3.1 Gas Supply ........................................................................................................................... 10
3.2 Frequency Control ................................................................................................................ 11
3.3 Air Mix/No Air Mix Selector Switch ....................................................................................... 12
3.4 Safety Devices ..................................................................................................................... 13
3.5 Alarm Silence ....................................................................................................................... 17
3.6 Pressure Sensor ................................................................................................................... 18
4Location of Oxylog 1000 (old) Assemblies 19
5Pneumatic Control (new Oxylog 1000) 20
5.1 Gas Supply ........................................................................................................................... 20
5.2 Frequency Control ................................................................................................................ 21
5.3 Air Mix/No Air Mix Selector Switch ....................................................................................... 22
5.4 Safety Devices ..................................................................................................................... 23
5.5 Alarm Silence ....................................................................................................................... 27
5.6 Pressure Sensor ................................................................................................................... 28
6Location of Oxylog 1000 (new) Assemblies 29

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II
Contents
Maintenance Procedures
1General notes 33
2Maintenance intervals 33
2.1 Measures every two years ....................................................................................................33
2.2 Measures every six years .....................................................................................................33
3Pressure regulator 34
3.1 General points concerning the pressure regulator ................................................................34
3.2 Removing/replacing the pressure regulator .......................................................................... 34
Schematics and Diagrams
1Flow chart of the Oxylog 1000 (old) 43
2Flow chart of the Oxylog 1000 (new) 45
3Tubing Diagram of the Oxylog 1000 (old) 47
4Tubing Diagram of the Oxylog 1000 (new) 49
Annex
Parts catalog
Test List

1
General

2

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Oxylog 1000 General
1 Symbols and Defini-
tions
2Notes This Technical Documentation conforms to the IEC 60601-1 standard.
Read each step in every procedure thoroughly before beginning any test.
Always use the proper tools and specified test equipment. If you deviate from
the instructions and/or recommendations in this Technical Documentation,
the equipment may operate improperly or unsafely, or the equipment could
be damaged.
It is our recommendation to use only Dräger parts and supplies.
The maintenance procedures described in this Technical Documentation may
be performed by qualified service personnel only. These maintenance proce-
dures do not replace inspections and servicing by the manufacturer.
The information in this Technical Documentation is confidential and may not
be disclosed to third parties without the prior written consent of the manufac-
turer.
This Technical Documentation is for the purpose of information only. Product
descriptions found in this Technical Documentation are in no way a substitute
for reading and studying the Instructions for Use/Operating Manual enclosed
with the product at the time of delivery.
WARNING
A WARNING statement provides important information about a poten-
tially hazardous situation which, if not avoided, could result in death
or serious injury.
CAUTION
A CAUTION statement provides important information about a potentially
hazardous situation which, if not avoided, may result in minor or moderate
injury to the user or patient or in damage to the equipment or other prop-
erty.
NOTE
A NOTE provides additional information intended to avoid inconvenience
during operation.
Definitions according to German standard DIN 31051:
Inspection = examination of actual condition
Maintenance = measures to maintain specified condition
Repair = measures to restore specified condition
Servicing = inspection, maintenance, and repair

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45503.400
General Oxylog 1000
Know-how contained in this Technical Documentation is subject to ongoing
change through research and development and Dräger Medical reserves the
right to make changes to this Technical Documentation without notice.
NOTE
Unless otherwise stated, reference is made to laws, regulations or stan-
dards (as amended) applicable in the Federal Republic of Germany for
equipment used or serviced in Germany. Users or technicians in all other
countries must verify compliance with local laws or applicable international
standards.

5
Function Description

6

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Oxylog 1000 Function Description
1 General information
on the Oxylog 1000
The Oxylog 1000 is a time-controlled, volume-constant emergency and trans-
port ventilator for patients weighing 7.5 kg or above. The Oxylog 1000 has
the operating mode: controlled ventilation (IPPV = Intermittent Positive Pres-
sure Ventilation).
Fig. 1: Front view of the Oxylog 1000

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85503.400
Function Description Oxylog 1000
2 Components of the
Oxylog 1000
The Oxylog 1000 comprises the following components:
– Pressure reducer
– ON/OFF switch
– Inspiratory/expiratory switching valve
– Minute volume control valve
– Frequency control
– Safety valve
– Emergency air valve
– Pressure gauge
–Injector
– Vent valve
– Air Mix/No Air Mix selector switch
– Logic circuit for disconnect alarm and stenosis alarm
– Alarm silence

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Oxylog 1000 Function Description
Figure 2 Block diagram of the Oxylog 1000
Logic circuit for disconnect and stenosis alarm
Alarm generator
Alarm silence
Safety valve
Injector
Insp./exp. switching valve
ON/OFF switch
Pressure regulator
Frequency control
Filter
Air Mix/No Air Mix selector switch
Emergen cy air valve
Pressure gauge Ventilation
valve
Paw low
Paw high
Silence
Psupply pressure
Switching valve
Supply pressure switching valve
Vent valve
Pressure sensor
2,7bar-6bar
Flow- control
Minute volume valve
Pushbutton valve

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Function Description Oxylog 1000
3 Pneumatic Control
(old Oxylog 1000)
3.1 Gas Supply The compressed gas is supplied from the central supply system (CS) or from
an O2cylinder with pressure regulator. The operating pressure of the
Oxylog 1000 is between 2.7 bar and 6 bar.
The supply gas flows via the port (A1), the filter (F1) and the pressure regula-
tor (DR1) to the manifold (O). The pressure regulator (DR1) regulates the
pressure of the supply gas to 1.5 bar.
Fig. 3: Segment of the flow chart: Supply gas inlet
CAUTION
Risk of damage to equipment! Dust, oil and humidity in medical gases may
impair the functioning of the equipment or damage it. Use only dust-free,
oil-free and dry medical gases.
A1
DR1
F1
Manifold

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Oxylog 1000 Function Description
3.2 Frequency Control When the unit is off, driving gas flows via the manifold
and through the dosage valve D2 to the 3/2-way valve DMR5 and to
DMR6. In consequence, DMR6 switches through and the switching valve
WV1 switches to expiration. At the same time DMR1 is switched; DMR2 is
vented via the volume V1 and DMR1.
If the switch S1 is switched, the gas flows via the manifold
to D5, the frequency control valve FD1, and to DMR1 and 4. DMR4
fills V2, and DMR5 is switched with a delay; this vents DMR6, 4 and 1. At the
same time, DMR3 is switched over via D1 and DMR2, and WV1 switches to
inspiration. Vent valve EV is closed via DMR18.
Figure 4 Segment of the flow chart: Frequency Control
During the inspiration phase, the supply gas flows through the switching
valve (WV1 - see illustration above), the minute volume control valve (MV),
the injector (I), the patient connection port (PA), the hose system (S) and the
ventilation valve (BV) to the patient.
During expiration, the vent valve (EV) is open to the atmosphere, so that
pressure is relieved from the hose system (S) and the ventilation valve (BV);
the patient can breathe out through the expiration branch of the ventilation
valve (BV) to atmosphere.
DMR1
DMR4
FD1
DMR2 DMR3
D1
V1
V2
WV1
S1
D5
MV I
PA BV
S
EV
Manifold
D2
DMR5 DMR6
I
0
Manifold
DMR18

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Function Description Oxylog 1000
3.3 Air Mix/No Air Mix
Selector Switch
The setting of the Air Mix/No Air Mix selector switch determines the O2con-
centration of the supply gas for the patient.
When the Air Mix/No Air Mix selector switch is set to "Air Mix", the injector (I)
takes in ambient air through the 3/2-way valve (WV2). The O2concentration
of the supply gas for the patient is approx. 50 vol.% O2.
When the Air Mix/No Air Mix selector switch is set to "No Air Mix", the injector
(I) takes in the supply gas through the 3/2-way valve (WV2). The O2concen-
tration of the supply gas for the patient is approx. 100 vol.% O2.
Figure 5 Segment of the flow chart: Air Mix/No Air Mix selector switch
WV2
S2
I

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Oxylog 1000 Function Description
3.4 Safety Devices The Oxylog 1000 has the following safety devices:
– Mechanical safety valve
– Pressure gauge
– Emergency air valve
– Disconnect alarm
– Stenosis alarm
– Alarm warning of failure of the compressed gas supply
– Alarm silence
3.4.1 Mechanical Safety Valve The mechanical safety valve limits the ventilation pressure to approx.
80 mbar.
3.4.2 Pressure Gauge The pressure gauge indicates the current airway pressure during the inspira-
tion phase. The display range is -10 mbar to 80 mbar.
3.4.3 Emergency Air Valve The spontaneously breathing patient can breathe in ambient air through the
emergency air valve if the Oxylog 1000 has failed due to a fault.

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Function Description Oxylog 1000
3.4.4 Disconnect Alarm The disconnect alarm (Paw low) warns of a pressure drop in the patient gas.
The disconnect alarm is triggered under the following conditions:
– The hose system connection to the patient is interrupted
– The ventilation valve is incorrectly fitted or damaged
– The cuff has a leak
– Internal device error
If the ventilation pressure is less than 10 mbar (disconnect condition), the
3/2-way valve (DMR7 - see illustration above) is not triggered. That is, the
3/2-way valves (DMR9 and DMR10) operate the 3/2-way valve (DMR11).
During the expiration phase the indicator (Paw low) visually indicates the dis-
connection and the alarm generator (L1) delivers an audible warning.
If the ventilation pressure is higher than 10 mbar, the 3/2-way valve (DMR7)
switches. The 3/2-way valves (DMR9, DMR10 and DMR11) vent to atmo-
sphere. The visual and audible alarms are suppressed.
Figure 6 Flow chart of the Oxylog 1000: Disconnect Alarm
DMR7
DMR9 DMR10 DMR11
Ventilation pressure
L1

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Oxylog 1000 Function Description
3.4.5 Stenosis Alarm The stenosis alarm (Paw high) warns of a high airway pressure in the patient
branch. The stenosis alarm is triggered under the following conditions:
– The patient's airways are blocked
– The ventilation hose is kinked
– The lung compliance is reduced
– The patient "fights" the ventilator
If the ventilation pressure is equal to or higher than 10 mbar, but the alarm
limit (30 mbar to 60 mbar) is pre-set lower, the 3/2-way valve (DMR8) is not
triggered. The 3/2-way valves (DMR12 and DMR13) vent through the 3/2-
way valve (DMR8).
If the ventilation pressure exceeds the pre-set alarm limit, the 3/2-way valve
(DMR8) activates the 3/2-way valves (DMR12 and DMR13). The 3/2-way
valve (DMR13) activates the “Paw high” indicator (Z3) and the 3/2-way valve
(DMR14) activates the alarm generator (L1). At the same time the 3/2-way
valve (DMR8) switches the 3/2-way valve (DMR18). The vent valve (EV)
opens the supply gas path to atmosphere. This condition persists until the
next inspiratory phase.
Figure 7 Flow chart of the Oxylog 1000: Stenosis alarm
DMR8 DMR12 DMR13
Z3
DMR14
EV DMR18
L1

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Function Description Oxylog 1000
3.4.6 Gas Supply Failure
Warning (Pv)
If the gas supply fails or falls below a defined pressure, the Oxylog 1000
delivers two alarms:
– Visual alarm indicator "Pv"
– Audible alarm (alarm generator)
The alarm is triggered under the following conditions:
– The pressure of the gas supply from the central supply system or from the
O2cylinder is inadequate or absent
– The valve of the O2cylinder is closed
– The gas supply connector is incorrectly installed
Figure 8 Segment of the flow chart: Gas supply failure alarm
Pv