VIASYS Bear Cub 750PSV User manual

Service Manual
Bear Cub 750PSV
© Copyright 2004, VIASYS Healthcare Critical Care
L2346 Revision B June 2004

2Bear Cub 750PSV
Revision History
Date Revision Pages Changes
June 2003 A All Release
June 2004 B All Release manual in VIASYS Healthcare
template using VIASYS Healthcare Critical
Care nomenclature.
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Service Manual 3
Contact and Ordering Information
United States, Latin America, Asia Pacific:
Sales, Service and Clinical Support:
VIASYS Healthcare
Critical Care Division
22705 Savi Ranch Parkway
Yorba Linda, CA 92887
Phone: [phone]
[phone]
Fax: [phone]
www.VIASYShc.com
United Kingdom:
Sales, Service and Clinical Support:
VIASYS Healthcare
3 Welton Rd.
Warwick,
CV34 5PZ
Phone: [phone]
Fax: [phone]
Europe
Sales and Customer Service Technical Service
VIASYS Healthcare VIASYS Healthcare
Critical Care Division Leibnizstrasse 7
22705 Savi Ranch Parkway D-97204 Hoechburg
Yorba Linda, CA 92887 Germany
Phone: [phone] Phone [phone] – 0
[phone] Fax:[phone]
e-mail: [email protected]
website: www.VIASYShc.com
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4Bear Cub 750PSV
CAUTION
Federal law (USA) restricts this device to sale by or on the order of a physician.
CAUTION
Not suitable for use in the presence of flammable anesthetics.
CAUTION
Service and/or repair of this instrument is restricted to VIASYS Healthcare authorized
or VIASYS Healthcare Trained Personnel only.
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Service Manual 5
Warranty
The Bear Cub 750PSV is warranted to be free from defects in material and
workmanship and to meet the published specifications for One (1) year from date of
shipminent.
The liability of VIASYS Healthcare, Critical Care Division, (referred to as the
Company) under this warranty is limited to replacing, repairing or issuing credit, at
the discretion of the Company, for parts that become defective or fail to meet
published specifications during the warranty period; the Company will not be liable
under this warranty unless (A) the Company is promptly notified in writing by Buyer
upon discovery of defects or failure to meet published specifications; (B) the
defective unit or part is returned to the Company, transportation charges prepaid by
Buyer; (C) the defective unit or part is received by the Company for adjustment no
later than four weeks following the last day of the warranty period; and (D) the
Company’s examination of such unit or part shall disclose, to its satisfaction, that
such defects or failures have not been caused by misuse, neglect, improper
installation, unauthorized repair, alteration or accident.
Any authorization of the Company for repair or alteration by the Buyer must be in
writing to prevent voiding the warranty. In no event shall the Company be liable to
the Buyer for loss of profits, loss of use, consequential damage or damages of any
kind based upon a claim for breach of warranty, other than the purchase price of any
defective product covered hereunder.
The Company warranties as herein and above set forth shall not be enlarged,
diminished or affected by, and no obligation or liability shall arise or grow out of the
rendering of technical advice or service by the Company or its agents in connection
with the Buyer's order of the products furnished hereunder.
Limitation of Liabilities
This warranty does not cover normal maintenance such as cleaning, adjustment or
lubrication and updating of equipment parts. This warranty shall be void and shall not
apply if the equipment is used with accessories or parts not manufactured by the
Company or authorized for use in writing by the Company or if the equipment is not
maintained in accordance with the prescribed schedule of maintenance.
The warranty stated above shall extend for a period of One (1) year from date of
shipment, with the following exceptions:
1. Components for monitoring of physical variables such as temperature,
pressure, or flow are warranted for ninety (90) days from date of receipt.
2. Elastomeric components and other parts or components subject to
deterioration, over which the Company has no control, are warranted for sixty
(60) days from date of receipt.
3. Internal batteries are warranted for ninety (90) days from the date of receipt.
The foregoing is in lieu of any warranty, expressed or implied, including, without
limitation, any warranty of merchantability, except as to title, and can be amended
only in writing by a duly authorized representative of the Company.
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Service Manual 7
Contents
Revision History .................................................................................... 2
Contact and Ordering Information ............................................................................... 3
Warranty ......................................................................................................................... 5
Limitation of Liabilities.................................................................................................... 5
Contents ......................................................................................................................... 7
List of Figures ................................................................................................................9
List of Tables................................................................................................................ 11
Chapter 1: Specifications ................................................................... 13
Modes............................................................................................................................ 13
Controls ........................................................................................................................13
Alarms........................................................................................................................... 15
Monitors........................................................................................................................17
Preset Values ............................................................................................................... 19
Emissions/Susceptibility............................................................................................. 19
Outputs .........................................................................................................................19
Inputs ............................................................................................................................ 20
Physical Dimension and Shipping Information......................................................... 20
Environmental Specifications..................................................................................... 21
Method of Sterilization/Disinfection ........................................................................... 21
Cleaning........................................................................................................................22
Sterilization...................................................................................................................22
Chapter 2: Theory of Operation ......................................................... 23
Overview .......................................................................................................................23
Ventilator pneumatics - General description............................................................. 25
Gas Inlet Conditioning................................................................................................. 25
Blender.......................................................................................................................... 25
Flow Control Valve....................................................................................................... 25
AOPR Valve/Sub-Ambient Valve/ Dump Solenoid .................................................... 26
Auxiliary Gas Outlet..................................................................................................... 26
Pressure Control System ............................................................................................ 26
Exhalation Valve .......................................................................................................... 27
Flow Sensor.................................................................................................................. 27
Ventilator Electronics .................................................................................................. 27
Power Supply ............................................................................................................... 28
Ventilator Software ...................................................................................................... 28
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8Bear Cub 750PSV
Chapter 3 OVP Recommended Service ........................................... 29
Operational Verification .............................................................................................. 29
Equipment Required.................................................................................................... 29
Test Procedures........................................................................................................... 32
Exterior Inspection and Cleaning............................................................................... 34
Exterior Cleaning ......................................................................................................... 34
Plugs and Cables ........................................................................................................ 34
OVP Checklist .............................................................................................................. 35
Verification Steps......................................................................................................... 35
Chapter 4 Calibration (for software releases 2 and 3 only)........... 37
Introduction .................................................................................................................. 37
Pressure Transducers and Flow Control Valve Calibration .................................... 38
Air and O2Regulator Balance..................................................................................... 41
Objective...................................................................................................................... 41
Equipment ................................................................................................................... 41
Requirements .............................................................................................................. 41
Chapter 5 Schematics and Assemblies ........................................... 45
Chapter 6 Troubleshooting ............................................................... 69
Chapter 7 Removal & Replacement.................................................. 73
Interior Access ............................................................................................................. 73
Flow Valve Assembly Removal .................................................................................. 74
Control PCB Removal.................................................................................................. 75
Display PCB Removal.................................................................................................. 76
Air/O2Regulator Removal ........................................................................................... 76
Blender Removal.......................................................................................................... 77
Exhalation Valve Removal .......................................................................................... 78
Chapter 8 Preventive Maintenance................................................... 79
Replacement Parts ...................................................................................................... 79
Recommended Service Procedure............................................................................. 79
Exterior Inspection ...................................................................................................... 80
Interior Inspection........................................................................................................ 80
Specifications............................................................................................................... 80
Calibration and Verification Procedure ..................................................................... 80
Ground Resistance Test.............................................................................................. 81
Current Leakage Test .................................................................................................. 81
Operational Verification Procedure............................................................................ 81
Chapter 9 RS-232 Protocol............................................................... 83
Scope ............................................................................................................................ 83
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Service Manual 9
Hardware Definition ..................................................................................................... 83
Pin Assignment............................................................................................................ 83
Software Protocol ........................................................................................................ 84
Continuous Output (Default Mode) .............................................................................. 84
Data Upon Request ..................................................................................................... 84
Data Format................................................................................................................. 84
Chapter 10 Parts List.......................................................................... 93
Chapter 11 Repackaging Instructions ............................................... 95
General.......................................................................................................................... 95
Packaging Instructions ............................................................................................... 95
Procedure ..................................................................................................................... 95
Index ..................................................................................................... 97
List of Figures
Figure 2-1: Top Level Block Diagram ............................................... 23
Figure 2-2: Pneumatics System Schematic ..................................... 24
Figure 3-1: Bear Cub 750PSV US with Patient Circuit ....................33
Figure 5-1: Power Supply Module Assembly (1 of 2) ...................... 45
Figure 5-2: Power Supply Module Assembly (2 of 2) ....................... 46
Figure 5-3: Schematic Diagram, Pneumatic 750PSV ....................... 47
Figure 5-4: Power Supply PCB Assembly (1 of 3) ............................48
Figure 5-5: Power Supply PCB Assembly (2 of 3) ............................49
Figure 5-6: Power Supply PCB Assembly (3 of 3) ............................50
Figure 5-7: Pneumatic Tubing Diagram............................................. 51
Figure 5-8: Display PCB (1 of 3) ......................................................... 52
Figure 5-9: Display PCB (2 of 3) ......................................................... 53
Figure 5-10: Display PCB (3 of 3)....................................................... 54
Figure 5-11: Control PCB Assembly.................................................. 55
Figure 5-12: Wiring Diagram............................................................... 56
Figure 5-13: Power Supply Schematic .............................................. 57
Figure 5-14: Control Schematic PCB (1 of 5) .................................... 58
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10 Bear Cub 750PSV
Figure 5-15: Control Schematic PCB (2 of 5).................................... 59
Figure 5-16: Control Schematic PCB (3 of 5).................................... 60
Figure 5-17: Control Schematic PCB (4 of 5).................................... 61
Figure 5-18: Control Schematic PCB (5 of 5).................................... 62
Figure 5-19: Display Schematic PCB (1 of 4).................................... 63
Figure 5-20: Display Schematic PCB (2 of 4).................................... 64
Figure 5-21: Display Schematic PCB (3 of 4).................................... 65
Figure 5-22: Display Schematic PCB (4 of 4).................................... 66
Figure 5-23: BEAR CUB 750PSV Overlay (P/N 51-09640-00)........... 67
Figure 6-1: Troubleshooting Decision Tree...................................... 69
Figure 7-1: Cover Removal................................................................. 73
Figure 7-2: Standoff Tube Removal................................................... 74
Figure 7-3: Opening of Front Portion ................................................ 74
Figure 7-4: Flow Valve Assembly ...................................................... 75
Figure 7-5: Control PCB ..................................................................... 75
Figure 7-6: Display PCB ..................................................................... 76
Figure 7-7: Air / O2Fittings................................................................. 76
Figure 7-8: Air / O2Regulator Assembly ........................................... 77
Figure 7-9: Oxygen % Knob ............................................................... 77
Figure 7-10: Blender Removal ........................................................... 78
Figure 7-11: Blender Assembly ......................................................... 78
Figure 7-12: Exhalation Valve Assembly .......................................... 78
Figure 8-1: Ventilator Back Panel ...................................................... 81
Figure 11-1: Repacking Procedure.................................................... 96
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Service Manual 11
List of Tables
Table 3-1: Standard Settings ............................................................. 30
Table 3-2: Rate .................................................................................... 30
Table 3-3: Exhalation Time and I/E Ratio Table ...............................30
Table 4-1: Control PCB Transducer Calibration .............................. 38
Table 4-2: Calibration ......................................................................... 39
Table 4-3: Diagnostic Function ......................................................... 40
Table 4-4: Inspiratory Flow Calibration ............................................ 41
Table 4-5: Regulator Balance ............................................................ 42
Table 4-6: Standard Test Settings..................................................... 43
Table 6-2: Troubleshooting ................................................................ 70
Table 9-1: Pin Assignment.................................................................. 83
Table 9-2: Alternate Pin Assignment ................................................. 84
Table 9-3: Valid Requests Received by the Ventilator .................... 85
Table 9-4: Valid Message Transmitted by the Ventilator ................ 85
Table 9-5: Real Time Data .................................................................. 86
Table 9-6: Adult Ventilator Control Settings .................................... 87
Table 9-7: Adult Ventilator Alarm Settings / Status......................... 88
Table 9-8: Adult Ventilator Monitor Status....................................... 89
Table 9-9: Infant Ventilator Control Settings ................................... 90
Table 9-10: Infant Ventilator Alarm Settings / Status ...................... 91
Table 9-11: Infant Ventilator Monitor Status .................................... 92
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Service Manual 13
Chapter 1: Specifications
Modes
A/C
In the Assist/Control position, a mechanical breath is delivered with each inspiratory
effort, provided the patient satisfies the assist sensitivity criteria. If the patient does
not meet the assist sensitivity criteria, the ventilator automaticallydelivers breaths
according to the Ventilator Rate control. Mechanical breaths may then be either
patient initiated (assisted) or ventilator initiated (controlled).
SIMV/IMV
In the SIMV/IMV position, a combination of mechanical and spontaneous breath
types is available. Mechanical breaths, either assisted or controlled, are delivered at
the set ventilator rate while all other breaths are spontaneous. Disabling the assist
sensitivity mechanism. or removing the flow sensor from the ventilator, will cause the
equivalent of IMV mode of ventilation to exist.
CPAP
In the CPAP position, the Base Flow control establishes the continuous flow
available for spontaneous breathing.
STANDBY
The STANDBY position discontinues all electrical controls and functions with the
exception of the charging system for the internal battery.
NOTE
If the ventilator is connected to air and O2 sources, blended gas will circulate while
ventilator is in the STANDBY position, making gas available from the Auxiliary Gas
Outlet. The amount of gas flow circulating is determined by the Base Flow setting.
Controls
Rate
Range: 1 to 150 BPM
Resolution: 1 from 1 to 100BPM
2 from 100 to 150 BPM
Tolerance: Greater of ± 1 BPM or 0.02 seconds applied to the Breath
Interval
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14 Bear Cub 750PSV
Inspiratory Time
Range: 0.10 to 3.0 seconds
Resolution: 0.01 from 0.10 to 0.50 seconds
0.02 from 0.50 to 1.70 seconds
0.05 from 1.70 to 3.00 seconds
Accuracy: ± 0.02 seconds from 0.10 to 0.50 seconds
± 0.025 seconds from 0.50 to 3.00 seconds
Inspiratory Flow
Range: 1 to 30 L/min
Resolution: 0.5 L/min from 1 to 10 L/min
1.0 L/min from 10 to 30 L/min
Accuracy: Pressures 0 to 60 cmH2O: ± 0.5 L/min or ± 10% of setting,
whichever is greater.
Pressure 60 to 72 cmH2O: ± 0.5 L/min or + 10%/- 15% of
setting, whichever is greater.
Baseline Flow
Range: 1 to 30 L/min
Resolution: 0.5 L/min from 1 to 10 L/min
1.0 L/min from 10 to 30 L/min
Accuracy:Pressures 0 to 60 cmH2O: ± 0.5 L/min or ± 10% of setting, whichever is
greater.
Pressure 60 to 72 cmH2O: ± 0.5 L/min or + 10%/- 15% of
setting. Whichever is greater
Volume Limit™
Range: 5 to 300 ML
Resolution: 1 ML from 5 to 50 ML
2 ML from 50 to 150 ML
5 ML from 150 to 300 ML
Accuracy: ± 2 ML or ± 10% of setting, whichever is greater
PEEP
Range: 0 to 30 cmH2O
Resolution: 1 cmH2O
Repeatability: ± 1 cmH2O or ± 5%, whichever is greater
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Service Manual 15
Inspiratory Pressure
Range: 0 to 72 cmH2O
Resolution: 1 cmH2O from 0 to 30 cmH2O
2 cmH2O from 30 to 72 cmH2O
Repeatability: ± 1 cmH2O or ± 5% whichever is greater. Breath to breath
Manual Breath
Range: X1
Assist Sensitivity
Range: 0.2 to 5.0 L/min
Resolution: 0.2 at 0.2 L/min increasing to 0.5 at 5.0 L/min
Accuracy:Not a calibrated scale, minimum setting accuracy is ± 0.1 L/min
Over Pressure Relief
Range: (Pressure at the patient wye): 15
to 75 cmH2O
Resolution: 2 cmH2O stability (repeatability) ±4 cmH2O
%02 Blending
Range: 21 to 100% Oxygen concentration
Resolution: 1%
Accuracy: ± 3% oxygen
APNEA Interval
Range: 5, 10, 20, or 30 seconds
Accuracy: ± 1 second
Alarms
Alarm Loudness
Range: Min. to Max. 60 to 75 db(A)
High Breath Rate
Range: 3 to 255 BPM
Low PEEP/CPAP
Range: -5 to 30 cmH2O
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16 Bear Cub 750PSV
Low Inspiratory Pressure
Range: 1 to 65 cmH2O
Patient Circuit
LED On/Off
Failed to Cycle
LEd On/Off
Low Gas Supply
LED On/Off
Apnea
LED On/Off
Settings Incompatible
LED On/Off
Pressure Settings Incompatible
LED On/Off
Prolonged Inspiratory Pressure
LED On/Off
Flow Sensor
LED On/Off
Low Battery
LED On/Off
Alarm Silence
60 seconds
Visual Reset
Push Button
High Pressure Limit
Range: 10 to 75 cmH2O
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Service Manual 17
Line Power
Green/Red LED
Monitors
Total Breath Rate
Range: 0 to 255 BPM
Resolution: 1 BPM from 0 to 100 BPM
2 BPM from 100 to 150 BPM
3 BPM from 150 to 255 BPM
Exhalation Minute Volume
Range: 0 to 30.0 L/min
resolution: 0.01 L/min from o to 1.00 L/min
0.02 L/min from 1 to 2.00 L/min
0.05 L/min from 2 to 5.0 L/min
0.10 L/min from 5 to 10.0 L/min
0.20 L/min from 10 to 30.0 L/min
Accuracy: Accuracy of the exhaled minute volume is a function of both
volume and breath rate. To evaluate the performance of this
monitor the accuracy of both tidal volume and breath rate must
be combined
Exhaled Tidal Volume
Range: 0 to 500 ML
Resolution: 0.1 ML from 0.0 to 99.9 ML
1.0 ML from 100 to 500 ML
Accuracy: ± 1 ML or ± 10%, whichever is greater
% of Tubing Leakage
Range: 0 to 100%
Resolution: 1%
Accuracy: ± 2% or ± 1 ML
Inspiratory Time
Range: 0 to 3.10 seconds
Resolution: 0.01 seconds
Accuracy: ± 0.02 seconds
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18 Bear Cub 750PSV
Expiratory Time
Range: 0 to 99.9 seconds
Resolution: 0.01 seconds from 0 to 99.9 seconds
0.10 seconds from 10.0 to 99.9 seconds
Accuracy: ± 0.02 seconds
I:E Ratio
Range: 9.9:1 to 1:9.9
Accuracy: ± 0.1 or ± 20 mseconds, whichever is greater
Peak Inspiratory Pressure
Range: 0 to 99 cmH2O
Resolution: 1 cmH2O
Accuracy: ± 2 cmH2O or ± 5% of reading, whichever is greater
Mean Airway Pressure
Range: 0 to 75 cmH2O
Resolution: 0.5 cmH2O
Accuracy: ± 2 cmH2O or ± 3% of reading, whichever is greater
Inlet O2Pressure
Range: 0 to 100 PSIG
Resolution: 1 PSIG
Accuracy: ± 5 PSIG
Proximal Airway Pressure
Range: -10 to 100 cmH2O
Resolution: 1 cmH2O
Accuracy: ± 1 cmH2O from -10 to 20 cmH2O
± 2 cmH2O from 20 to 65 cmH2O
± 3 cmH2O from 65 to 100 cmH2O
Hourmeter
Range: 0 to 99,999 hours
Resolution: 0.1 hour
Accuracy: ± 2% of reading
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Service Manual 19
Breath Type (Patient Initiated)
LED
Test
Push Button
Battery
LED On/Off
Preset Values
Minimum Expiratory Time 150 milliseconds
Maximum Inspiratory Time 3.10 seconds
Maximum settable I:E Ratio 4:1
Model 9300
Classification Class 1
Degree of Protection
Electric Shock Type B
Harmful Ingress of Water None (Ordinary Equipment)
Degree of Safety of Application
in Presence of Flammable Anesthetics None
Mode of Operation Continuous
Emissions/Susceptibility
This ventilator has been tested to conform to the following specifications:
MIL-STD-461D:1993,MIL-STD-462D:1993, EN55011:1991, IEC 1000-4-2:1994, IEC
1000-4-3:1994, IEC 1000-4-4:1994, IEC 1000-4-5:1994, QUASI-STATIC:1993.
This ventilator is designed and manufactured to comply with the safety requirements
of IEC 601-1, IEC 601-2-12, CAN/CSA-C22.2 No. 601.1-M90, and UL 2601-1.
Outputs
Digital
(see chapter 9) RS-232 Bi-Directional
Analog
Proximal Pressure -10 to 100 cmH2O, 1 cmH2O/25 mv
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20 Bear Cub 750PSV
Proximal Inspiratory/Expiratory Flow -40 (expiratory) to 40 (inspiratory) L/min,
1 L/min/50 mv
Breath Phase 1 “Logic” signal; 0, 5V
Remote Nurse Call 0.5 amps max at 24 vdc max
Pneumatic
Auxiliary Blended Gas Outlet 7 to 17 psig, 0 to 8 L/min
Inputs
Electrical
Supply Ratings
Voltage: 100V 80 to 110 VAC
120V 96 to 132 VAC
220V* 176 to 242 VAC
240V 192 to 264 VAC
Current: 100V 1.0 A maximum
120V 1.0 A maximum
220V 0.5 A maximum
240V 0.5 A maximum
Frequency: 100V 50/60 Hz
120V 50/60 Hz
220V 50/60 Hz
240V 50/60 Hz
Fuses: 100/120V T 0.5 A, 5 x 20 mm
230/240V T 0.25 A, 5 x 20 mm
* For 220V operation, set the power entry module selector switch to 230V setting.
Pneumatic
Oxygen and Air 30 to 80 psig, 50 L/min Supply Ratings
Physical Dimension and Shipping Information
Ventilator Weight 27 lbs., 12 kg
Graphics Display Weight 5.5 lbs.
Pedestal Stand Weight 9 lbs.
Compressor Weight 110 lbs.
L2346 Revision B June 2004