Welch Allyn VITAL SIGNS MONITOR User manual
WELCH ALLYN VITAL SIGNS MONITOR OPERATOR MANUAL
13
II. 5. PERFORMANCE SPECIFICATIONS
The performance specifications of the Welch Allyn Vital Signs Monitor are as follows:
CUFF PRESSURE RANGE
0 mmHg - 300mmHg
INITIAL CUFF INFLATION
Default cuff inflation pressure is 160 mmHg. Operator may change this default in
configuration mode. Options are 120, 140, 160, 180, 200, 240 and 280 mmHg.
SYSTOLIC DETERMINATION
Maximum: 250 mmHg
Minimum: 60 mmHg
DIASTOLIC DETERMINATION
Maximum: 160 mmHg
Minimum: 30 mmHg
BLOOD PRESSURE ACCURACY
Blood pressure accuracy meets or exceeds SP10-1992 AAMI standards for non-invasive
blood pressure accuracy (AAMI standard: ± 5 mmHg mean error; 8 mmHg standard
deviation). Blood pressure accuracy is validated for pressure measurement using the
upper arm only, with the patient in a seated position. Blood pressure is validated against
manual auscultatory readings.
BLOOD PRESSURE DETERMINATION TIME
20 seconds to 45 seconds typical, 165 seconds maximum.
PULSE RATE DETERMINATION
Maximum: 200 bpm
Minimum: 40 bpm
PULSE RATE ACCURACY
SpO2Module Heart Rate (Nonin
®
) ±3.0%
SpO2Module Heart Rate (Nellcor Puritan Bennett
TM
) ±3 bpm
Blood Pressure Algorithm Heart Rate ±5.0%
OVERPRESSURE CUTOFF
295 mmHg to 330 mmHg
TEMPERATURE DETERMINATION
Normal and Monitor Modes: Maximum 108.0°F (42.2°C)
Minimum 84.0°F (28.9°C)
TEMPERATURE ACCURACY
Temperature accuracy meets ASTM E112-86: "Standard Specification for Electronic
Thermometer for Intermittent Determination of Patient Temperature."
WELCH ALLYN VITAL SIGNS MONITOR OPERATOR MANUAL
14
TEMPERATURE DETERMINATION TIME (ORAL)
Normal Mode: ORAL: 4 seconds typical, 15 seconds maximum
Monitor Mode: ORAL: 3 minutes
OXYGEN SATURATION RANGE (SpO2%)
40-99% oxygen saturation
SpO2ACCURACY
Nonin
®
Pulse Oximeter Module
Saturation (%SpO2± 1 Standard Deviation*)
70-99% ± 2 digits
< 70% unspecified
Nellcor Puritan Bennett
TM
Pulse Oximeter Module
Saturation (%SpO2± 1 Standard Deviation*)
70-99% ± 3 digits
< 70% unspecified
* Standard Deviation is a statistical measure: up to 32% of the readings may fall outside
these limits.
BATTERY CHARGING
To at least 90% capacity in 12 hours. Unit will operate and charge battery simultaneously
when connected to power source.
A fully charged battery will support 200 "typical" blood pressure determinations taken at 3
minute intervals. Battery is 90-100% charged after 12 hours of charging. The battery automatically charges when the monitor is powered through the AC power transformer. The
battery will charge faster when the instrument is not in operation.
II. 6. A. TECHNICAL SPECIFICATIONS:
MECHANICAL SPECIFICATIONS
DIMENSIONS
Height 6.5 inches (16.5cm)
Length 8.6 inches (21.8cm)
Depth 5.0 inches (12.7cm)
WEIGHT
Approximately 6 pounds (2.8Kg)
COLOR
Oral/Axillary Temperature Probe - Blue
Rectal Temperature Probe - Red
WELCH ALLYN VITAL SIGNS MONITOR OPERATOR MANUAL
15
MOUNTING
Self-Supporting on rubber feet
IV Pole Mountable
Custom Mobile Stand
Wall Mountable
Attaches to Bed Rail
PORTABILITY
- May be hand carried when held by the recessed handle.
- When attached to an IV pole, or mounted on its custom mobile stand, the
monitor and accessories can be wheeled from patient to patient.
- When attached to the bed rail may be transported with the patient within the
hospital environment.
OPERATOR INSTRUCTIONS/ALARM INTERPRETATION
Comprehensive Operator Manual available. Quick reference operator instruction card
available.
II. 6. B. ELECTRICAL SPECIFICATIONS
POWER REQUIREMENTS
Patient-Rated isolation transformer is connected to AC mains power source:
North American Version: 120VAC, 60 Hz., 0.20A Input Source; 8Vdc, 0.75A Output Source
International Versions: 230VAC or 240VAC, 50Hz., 0.20AInput Source; 8Vdc, 0.75AOutput Source
BATTERY
Lead acid, with external recharge capability.
II. 6. C. ENVIRONMENTAL SPECIFICATIONS
OPERATING TEMPERATURE
+10°C to +40°C
+50°F to +104°F
*Exception: Thermometry module will not maintain its performance
characteristics below 60°F (16°C).
OPERATING ALTITUDE
-170m to +4877m
-557ft. to +16,000ft.
II. 6. D. TRANSPORTATION/STORAGE CONDITIONS
STORAGE TEMPERATURE
-20°C to +50°C
-4°F to +122°F
RELATIVE HUMIDITY
15 to 90% (non-condensing)
WELCH ALLYN VITAL SIGNS MONITOR OPERATOR MANUAL
60
SECTION V
TROUBLESHOOTING/
MAINTENANCE/CALIBRATION
1. Troubleshooting: Error Indications and Interpretation
2. Troubleshooting: General Guide to Problems and Corrective Actions
3. Maintenance
a. Cleaning
b. Storage
c. Battery Removal and Replacement
4. Calibration
a. Blood Pressure Calibration Check
b. Temperature Calibration Check
c. SpO2Calibration Check
WELCH ALLYN VITAL SIGNS MONITOR OPERATOR MANUAL
61
V. 1. TROUBLESHOOTING:
ERROR INDICATIONS AND INTERPRETATION
The following table of alarm conditions and error codes is intended to provide the operator with a quick reference to the descriptions and probable causes of the error codes. For
service level troubleshooting, refer to the service manual.
When responding to a Monitor alarm, always CHECK THE PATIENT FIRST and then
proceed to check the Monitor.
Press CANCEL to reset patient alarm conditions.
ERROR MEASUREMENT DESCRIPTION CORRECTIVE
CODE MODE ACTION
C01 Blood Pressure Measurement cycle was -------
cancelled by operator
C02 Blood Pressure Autozero Failure Check for air obstruction,
limit patient movement
C03 Blood Pressure Inflation too rapid Check for kinked hose or air
obstruction
C04 Blood Pressure Excessive inflation time Check for air leaks
C05 Blood Pressure Excessive noise Check patient condition, cuff
placement, limit patient
movement
C06 Blood Pressure Measurement was outside Check patient condition
of Monitor's measurement range
E10 Blood Pressure Cuff overpressure condition Check patient condition
C20 Temperature Broken/missing probe Replace probe
C21 Temperature Probe not ready Replace probe in holder,
wait 15 seconds, retry
E0.0 thru E9.9 Temperature Internal malfunction Contact customer service
"P" Temperature Loss of tissue contact Insure proper probe
positioning
WELCH ALLYN VITAL SIGNS MONITOR OPERATOR MANUAL
62
ERROR MEASUREMENT DESCRIPTION CORRECTIVE
CODE MODE ACTION
"--" SpO
2
Sensor Error Check patient condition,
sensor position and
connection
E7 SpO
2
Internal Malfunction Contact customer service.
E11 General Internal safety violation Check patient, contact
customer service
E12 General Ambient temperature out Adjust temperature or
of range monitor location
E13 General Battery failure Use wall transformer
E20 thru E50 General Internal malfunction Contact customer service
V.2. TROUBLESHOOTING: GENERAL GUIDE TO
PROBLEMS AND CORRECTIVE ACTIONS
Incorrect cuff size
Note: Use Welch Allyn approved cuffs
only.
Patient’s arm position
Arm movement during blood pressure
cycle
Blood pressure taken over clothing
Arrhythmia
Incorrect reference
Change in blood pressure from auscultatory reading to Welch Allyn Vital Signs
Monitor reading
Poor auscultatory sound recognition
by observer
Determine correct cuff size:
• Use reference markings on cuff
• Measure patient’s arm circumference midway between elbow and
shoulder (see page 42 of Operator’s Manual to select correct cuff
size).
Ensure patient’s arm is at heart level.
Keep arm still during blood pressure cycle:
• Movement may cause inaccuracies from artifact.
Blood pressure should be taken on a bare arm.
Check for regularity of heart rate:
(palpate pulse or check monitor)
• Moderate to severe heart rate irregularities may make blood
pressure difficult to measure.
Use the correct Korotkoff sound to determine diastolic blood
pressure.
• Many listeners incorrectly equate diastolic blood pressure with the
disappearance of sound only (phase 5). The Welch Allyn Vital Signs
Monitor was developed using the American Heart Association recommendations, which state that phase 5 be used unless sound continues
to 0 mmHg, in which case the change in the quality of sound (phase
4) is to be used.
Deflate cuff no faster than 3 mmHg per second:
• One of the major sources of error in auscultatory blood pressure
measurement is deflating the cuff too quickly. The American Heart
Association recommends deflation no faster than 3 mmHg per
second.
Only use a sphygmomanometer that is known to be in calibration:
• Blood pressure taken with an un-calibrated sphygmomanometer
may be very inaccurate.
Check blood pressure immediately prior to Welch Allyn Vital Signs
Monitor Reading.
Use higher quality stethoscope. Have a different observer check
patient’s blood pressure.
1 INACCURATE
BLOOD PRESSURE
READINGS
Please note:
Differences of up to 10mmHg should be
considered normal and will occur for a
number of reasons including intrapatient
BP variability, observer hearing differences,
and auscultatory deflation rate.
Symptom Possible Cause Explanations and Corrective Action
WELCH ALLYN VITAL SIGNS MONITOR OPERATOR MANUAL
63
Leak in pneumatic system
Arm movement during cycle
Tubing movement artifact
Ensure all cuff attachments are tight.
Carefully check for tubing leaks in blood pressure cuff and tubing
attachment to monitor.
Keep arm still during blood pressure cycle:
• movement may cause inaccuracies from artifact
Do not contact tubing during blood pressure cycle:
• movement may cause inaccuracies from artifact
2 CUFF INFLATION
& DEFLATION
WITH NO BLOOD
PRESSURE
READING
DISPLAYED
(or error code in display)
Connections from monitor to cuff
loose
Check all connections. (Do not over tighten).
3 NO CUFF
INFLATION
Broken probe
Improper probe placement
Probe not replaced
Replace probe.
Consult Technical Manual.
Notify Biomedical department or Welch Allyn Technical Support.
Wait for display window to read OrLbefore placing probe.
Place probe in most posterior sublingual pocket.
Notify Biomedical department or Welch Allyn Technical Support.
Replace probe in holder prior to taking another temperature.
4 TEMPERATURE
MALFUNCTION
Improperly attached sensor
Cable incorrectly plugged into
monitor
Sp02disabled
Incorrect Sensor
Insert the patient’s finger completely into sensor
Ensure sensor cable is correctly plugged into monitor
Ensure Sp02is enabled (check Configuration Mode)
Ensure that correct manufacturers sensor is in use
• Nonin®and Nellcor Puritan Bennett™ sensors are not
interchangeable
5 SpO
2
MALFUNCTION
• Sensor in Place but No Sp02on
Display
• Inaccurate Sp02Reading
Paper will not advance Consult Technical Manual
Notify Biomedical department or Welch Allyn Technical Support.
6 PRINTER
MALFUNCTION
Low battery
Monitor not powering up
Check connections between monitor and transformer, and transformer and wall receptacle.
Unplug unit from wall receptacle and check for breaks in cord. If
connections secure, check electrical outlet
• Charging light will be on if connections are OK and the monitor is
plugged into a working outlet
Notify Biomedical Department or Welch Allyn Technical Support.
7 MONITOR WILL
NOT TURN ON
Pressure Preset too high Check default Pressure Preset setting: (in Configuration Mode)
• Unless patient has underlying systolic hypertension, set pressure
preset at 160 mmHg. (If systolic blood pressure greater than
pressure preset, monitor will automatically increase an additional
40 mmHg)
8 CUFF TOO TIGHT
(Over inflation)
Inappropriate size cuff
Cuff applied inside out
Determine cuff size with the cuff markings or refer to chart in
Operator’s Manual for determining cuff size.
• If cuff continues to pop off, notify Biomedical Department or Welch
Allyn Technical Support.
Re- apply cuff:
• Make sure Welch Allyn label is facing away from arm.
9 CUFF POPPING
OFF
Symptom Possible Cause Explanations and Corrective Action
WELCH ALLYN VITAL SIGNS MONITOR OPERATOR MANUAL
64
Normal operation
Pressure Preset too high
Patient movement
Small leak in pneumatic system
Typical time to take a reading is 20 to 45 seconds. 165 seconds
is the maximum.
Check default Pressure Preset setting. (in Configuration Mode)
Have patient sit still.
Do not have arm tight against chest wall as respirations may affect
speed and accuracy of blood pressure measurement.
Check cuff and tubing for leaks.
10 CUFF DEFLATING
TOO SLOWLY
QUICK GUIDE TO TAKING A MANUAL (AUSCULTATORY) BLOOD PRESSURE
1 Collect appropriate equipment.
Use a certified accurate sphygmomanometer and quality
stethoscope.
Select a blood pressure cuff of a suitable size. Use a blood
pressure cuff of the largest appropriate size for patient (see
markings on inside of cuff).
2. Have the patient assume a comfortable position with the
upper arm relaxed at heart level and the lower arm passively
supported.
3. Expose the area of the brachial artery by removing clothing,
or move a sleeve, if not too tight, above the area where the
cuff will be placed.
4. Center the cuff bladder so that the lower edge is at least 1
inch (2.5cm) above the bend of inner arm of the elbow.
5. Palpate the brachial or radial pulse.
6. Inflate the cuff until the pulsation disappears. Then continue
to inflate until the pressure reads 30 mmHg above the point
where the pulse disappeared.
7. Listen carefully with stethoscope over brachial artery while
controlling the release of air at a rate of 3 mmHg per second.
8. Systolic is determined by reading the manometer gauge
when the first faint but clear tapping sound is heard with
the stethoscope.
9. Diastole, in adults, is determined by reading the manometer
gauge to the closest even number when the last sound is
heard.
10. Release the air quickly after at least 10 to 20 mmHg of
silence.
Many sphygmomanometers are inaccurate. Low quality stethoscopes do not transmit sound well enough for blood pressure
sounds to be heard accurately. Acuff that is either too large or too
small will produce an inaccurate reading.
If the arm is not at the proper level, inaccurate readings will result.
Clothing over the artery hinders the ability to hear and may cause
inaccurate readings. Tight clothing may cause vessel congestion and
inaccurate readings.
This places the cuff in the best position for occluding the blood flow
through the brachial artery.
Determines the most accurate location for assessment and approximation of systolic pressure.
Facilitates identification of Phase One of Korotkoff sounds.
One of the major sources of error in auscultatory blood pressure
measurement is deflating the cuff too quickly. It is a normal operation of the Welch Allyn Vital Signs Monitor to deflate at the
American Heart Association recommended 3 mmHg per second.
Follows AHArecommended standards.
Follows AHArecommended standards.
Diastolic blood pressure in children is the point at which the sound
becomes muffled.
Action EXPLANATION
Symptom Possible Cause Explanations and Corrective Action
Welch Allyn Vital Signs Monitor Service Manual
Revision 1.0
Section 2: Service Set Up
2.3 Replacement Parts – Welch Allyn
In addition to individual parts listed below, S
PARE PARTS KITS have been made up for
your convenience. This assures that you will have all the mounting materials and other
small items needed for a repair. The foam pads mounted on the battery are one such
example. Kits will not be broken down. FOR AUTHORIZED REPAIR SITES ONLY.
Welch Allyn Replacement Parts:
PART#: DESCRIPTION:
130S46-E English Front Housing Kit
130S46-S Spanish Front Housing Kit
130S46-F French Front Housing Kit
130S46-G German Front Housing Kit
130S46-I Italian Front Housing Kit
130S51 Front Housing Switch Array
130S45* Main PCB Assembly
Includes: hardware
130S4* Display PCB Assembly
Includes: hardware
130S5* Valve
130S6 Pneumatic Connector
Includes: connector, washer, nut, and grommet
130S39* Pump Assembly
Includes: pump, cable tie mount, 2 cable ties, foam pads, instructions, specifications
130S40E English Rear Housing Kit
130S40F French Rear Housing Kit
130S40G German Rear Housing Kit
130S40I Italian Rear Housing Kit
130S40S Spanish Rear Housing Kit
130S9 Power Jack
130S10 Back Panel
Includes: panel and hardware
130S41 Tubing Assembly
Includes: all tubing, “T” fitting, instructions
130S13 Bumpers (2 ea.)
130S14 Battery Access Plate
Includes: plate and hardware
130S47 Wire Harness
Includes: 14 pin MTA connector, 3 pin MTA connector, faston receptacles for the
power supply, power jack, battery, and valve lead wires all assembled
130S16 Temperature Plug
130S17 Printer Assembly
Includes: thermal printer, double faced adhesive foam all assembled
130S18* Printer Housing
Includes: housing, switch array, PCB, hardware, flex strip
130S48 RS232 Cable
Includes: DB9 connector, hardware, 4 pin MTA, lead wires all assembled
Includes: front housing with loose labels. Four different types of
labels for the four different configurations i.e.:
BP w/Printer Only,
BP w/Printer + Temp,
BP w/Printer + SpO2,
BP w/Printer + Temp +
SpO
2
7
Loading...