Welch Allyn PneumoCheck 61000 User manual

Service Manual
PneumoCheck™
Spirometer Model # 61000,
Printer Charger #’s 76100 & 76106
Welch Allyn Medical Division
4341 State Street Road
P.O. Box 220
Skaneateles Falls, NY 13153-0220
Copyright 1997
Part 610132

Service Manual 610132 Rev. E Pneumocheck Handle and Printer/Charger 1
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DRAWINGS AND/OR ILLUSTRATIONS AND/OR PART NUMBERS CONTAINED IN THIS DOCUMENT
ARE FOR REFERENCE PURPOSES ONLY! FOR CURRENT REVISIONS CALL WELCH ALLYN.

2 Pneumocheck Handle and Printer/Charger Service Manual 610132 Rev. E

Service Manual 610132 Rev. E Pneumocheck Handle and Printer/Charger 3
Contents
General Information........................................................................................................... 5
1.1 Handheld Spirometer ................................................................................................................6
1.2 Printer .........................................................................................................................................8
Service ............................................................................................................................... 11
2.1 Bench Test Of Pneumocheck.................................................................................................12
2.2 Bench Test of Printer Charger................................................................................................17
2.3 Required Tools and Equipment .............................................................................................21
2.4 Test and Adjustment Procedures ...........................................................................................22
Theory of Operation ..........................................................................................................23
3.1 Spirometer Circuit Description ..............................................................................................24
3.2 Spirometer - Printer Circuit Description ...............................................................................30
3.3 Messages.................................................................................................................................33
Troubleshooting ................................................................................................................37
4.1 PneumoCheck Handle Technical Troubleshooting .............................................................40
4.2 Customer Service Questions and Answers.........................................................................43
Disassembly and Repair...................................................................................................49
5.1 Pneumocheck Handle Disassembly Procedures ................................................................50
5.2 Pneumocheck Printer/Charger Disassembly Procedures .................................................56
Pneumocheck Handle and Printer/Charger Spare Parts ...............................................65
List of Drawings and A Specs ..........................................................................................67

4 Pneumocheck Handle and Printer/Charger Service Manual 610132 Rev. E
Help Information:
•All service and repairs must be performed by authorized Welch Allyn personnel or
agents, using Welch Allyn replacement parts. Failure to do so will invalidate the
product warranty.
•If you have any questions about servicing the 61000 Pneumocheck or the 76100 or
76105 Printer Chargers, please call or write Welch Allyn:
Attn: Product Service Department
Welch Allyn, Inc.
4341 State Street Road
Skaneateles Falls, NY 13153-0220
U.S.A.
Telephone: [phone]
Fax: [phone]
• Troubleshooting assistance is contained in Section 4 of this manual.
•Please read and understand the PneumoCheck and Printer/Charger Operating
Instructions PN 610140-3.

Service Manual 610132 Rev. E Pneumocheck Handle Printer/Charger 5
1.1 Basic Description - Handheld Spirometer
1.2 Basic Description - Printer
General Information
Section 1 - General Information

6 Pneumocheck Handle and Printer/Charger Service Manual 610132 Rev. E
Section 1 - General Information
6 Pneumocheck Handle and Printer/Charger
The handheld spirometer is a small, battery operated
device incorporating a laminar flow sensing pneumatic
liquid crystal display, and electronic circuitry in an
injection molded case.
The front panel of the handheld spirometer includes the
eight character, alphanumeric display, two push-button
keys labeled TEST and DATA, an ON/OFF slide switch
and a battery charge indicator light. The flow sensor is
housedinthetopportionofthedevice and isremovable
forcleaning and sterilization. The mouthpiece is atone
end of the flow sensor and fits disposable cups or
disposable cardboard tubes. There are two electrical
contacts on each side to the spirometers batteries. On
one side of the spirometer is a DC jack for battery
charging in case the operator chooses not to purchase
the optional printer base.
The main function of the handheld spirometer is to
gather data from two kinds of spirometry maneuvers by
patients: the FVC maneuver and the MVV maneuver.
TheTEST key is used toselectand perform thedesired
test. It is normally pressed when the spirometer is
displaying the word SELECT. It can also be pressed
during a maneuver or during the results display to
prematurely quit a test and begin another.
TheDATA key is used tocontinuewhenever the device
pauses to display some information. When the word
SELECT isbeingdisplayed,theDATA keycanbeused
to show the results of the test that is currently stored in
memory.
The general flow of usage of the device starts with the
selection of a test. The operator then waits for an
audible beep, indicating that it is ready to acquire data
fromthemaneuver. Thepatientputsthemouthpieceto
his mouth and performs the maneuver. Upon
completion indicated by another audible beep, there is
a brief delay while the results are calculated then the
result messages are displayed. This completes the
loop, and the machine goes back to SELECT and waits
for another keypress.
1.1 Handheld Spirometer
Refer to Owners Guide
P/N 610140-3

Service Manual 610132 Rev. E Pneumocheck Handle Printer/Charger 7
When not in use, the handheld spirometer sits-in the
cradle of the printer base (or it is connected to an outlet
via a DC power adapter,) and the battery is charged.
The battery indicator light remains on whenever a
source of charge current is present. The spirometer
becomes operational when it is lifted from the printer
base or disconnected from the DC adapter. The
spirometer is functional only while disconnected from
the charger or printer base and the ON/OFF switch is
ON. The word SELECT appearson thedisplay and the
device waits for a keypress from the operator.
When the word SELECT is on the display, you can do
one to the following:
1. Press the test key which will start the sequence
for doing an FVC test, and MVV test, or a
calibration of the spirometer.
2. Press the DATA key which will display the test
values of the best test of a test is currently
stored in the spirometer’s memory.
3. Put the spirometer back into the printer cradle
which will start the sequence for transmitting
any test data in the spirometer’s memory to the
printer’s memory, and then resume charging
the battery.
4. Connect the spirometer to the DC power
adapter, which will resume charging the battery.
5. Turn the unit off using the ON/OFF slide switch.
A more detailed description of the operation of the
spirometer is contained in the Operator’s Manual.
Section 1 - General Information

8 Pneumocheck Handle and Printer/Charger Service Manual 610132 Rev. E
The printer base consists of a receptacle to hold the
spirometer, a battery charging circuit, a high speed
thermal line printer, and associated microprocessor a
power circuitry, all housed in an injection molded case.
The front panel of the printer includes 2 indicator lights,
and 3 push button keys marked STOP, FEED, and
PRINT. Also on the front panel are 5 numeric rotary
switches: 2 digits for AGE, and 3 digits for HEIGHT.
The are also 2 slide switches for selecting SEX and
RACE.
There is a set of 4 option switches located on the
underside of the unit.
The main function of the printer base is to print reports
of spirometry tests performed by the handheld
spirometer, and to charge the spirometer’s battery.
The general flow of usage is as follows:
Whenthe spirometer is placedin the cradleof the base,
it immediately begins sending data to the printer base
during which time the message SENDING appears on
the panel of the printer base. Once the data transfer is
complete, the printer base gives a compound beep and
continues to charge. The READY light on the printer
base turns on solidly, indicating that there is a test
storedin itsmemory. Theoperatorthensetsthepatient
demographic switches for the patient, then presses the
PRINT key to print the report.
There are two indicator lights on the front panel of the
printer base. One is labeled POWER and is on
wheneverthe unit ispluggedintoapowered outlet. The
other light is labeled READY, in the memory of the
printer base. When the device is receiving data from
the spirometer, this light flashes. Once the transfer is
complete and test is in memory, the light remains on.
1.2 Printer
Section 1 - General Information

Service Manual 610132 Rev. E Pneumocheck Handle Printer/Charger 9
The READY light is also used to indicate an error
condition. Errors are numbered from one to three.
When an error occurs, an alarm sounds and the
READY light flashes in groups of 1, 2, or 3 flashes (at a
rate of times per second), corresponding to the error
thatwasdetected.Aonesecondpauseoccursbetween
these flashes. This continues until the error condition
has been cleared.
The PRINT key is used to print a report. If there is no
report to be printed and the PRINT key is pressed, a
short chirp will sound and no report is printed.
The FEED key is used to feed paper out of the printer.
The paper is fed as long as the key is held down. The
key is not operable while a report is being printed or
while the data is being transferred from the spirometer.
TheSTOP keyaborts the current task(reportprintingor
data transfer) and returns to the wait state of the base.
It is also used to clear the machine of any error
condition that it might be in. It does not clear the printer
base’s memory.
The demographic switches are used to indicate the
patient’s age, height, sex, and race. The AGE switch
consistsof two digits,each of whichcan range from 0 to
9. The range of valid values depends on the normal
being used.
The HEIGHT switches operate in the same manner as
the AGE switch, except that it has three digits. Either
inches or centimeters can be used for the height. As
was the case for AGE the range of valid values depend
on the normal being used.
Section 1 - General Information