Welch Allyn Tycos User manual

Service Manual

Manuals

Operator Manual

Aneroid Sphygmomanometers

PN 95P504 Rev A

Welch Allyn Inc. Aneroid Sphygmomanometers Service Manual Revision A

Revision History

Revision Section Date Author Description

A All 8/31/00 JDB Introduction of Aneroid Service

Manual

Welch Allyn Inc. Page 2 of 40

Welch Allyn Inc. Aneroid Sphygmomanometers Service Manual Revision A

T106845A Calibration Tool T105243A Pointer Removal Tool T105243B Pointer Removal Tool T107345 Span Wrench T110657 Calibration Dial Adapter, Economy T105721 Calibration Dial, Pocket and Hand Gauge T112663 Calibration Dial, Walls and Mobiles T106763 Calibration Stand (Wall Aneroid) T112592 Calibration Dial (Silver Ring) T105258 Wrench (Economy) T108913 3/8” Open End Wrench T108897 Movement Removal Wrench T113265 Thumbscrew Wrench T110543 Pliers to Grip Lure T105644 Collet T55804-1 Pocket Screw Cap Assembly T108212 Economy Fixture T107569 Hand Fixture T74555 Pocket Fixture T112655 Top Plate Wrench T113249 Screw Cap Removal Tool T112927 5/16” Open End Wrench T112765 ¼” Open End Wrench T34938 Pointer Block T112511B Tweezers T112726 Jewelers Screw Driver T112595 Calibration Tool (Silver Ring) “Disytest” Calibration Dial for Pro Check (Order From S+K) T112833 Movement Removal Tool (S+K Movement) T112653 Torque Wrench (S+K movement) T112653A Adapter for Torque wrench (S+K Movement)

Test Equipment Description Other Tools Needed but

5088-01 Bulb and Valve T112854 500cc Volume 1. Small Hammer 9585TPK4 “T” Fitting 2. 5/8” Socket 9586TPK4 “Y” Fitting 3. ½” Socket 97P24 Pneumatic Tubing (4ft.) 4. ¾” Open End Wrench 200-2000IN Netech Digital Pressure Meter 5. 9/16” - 24 Thread Tap

“or”

2270-01 Setra Digital Pressure Meter. 7. 7/16” - 36 Thread Tap T111962A Tension Set Tool T112459 Torque Screwdriver T112459A Torque bit.

Welch Allyn Inc. Page 5 of 40

Not Provided By Welch Allyn

6. ¼” - 40 Thread Tap

Welch Allyn Inc. Aneroid Sphygmomanometers Service Manual Revision A

1.3 Test Specifications

The following are the test specification for the Welch Allyn

Tycos Aneroid Gauge:

1. The gauge will be accurate to within +/- 3 mmHg* at the following test pressures:

a) 0 mmHg (pointer inside the oval/rectangle) b) 60 mmHg c) 150 mmHg d) 200 mmHg e) 300 mmHg

* This accuracy is based on the use of a calibrated digital pressure meter. If using a calibrated aneroid or mercury column for measuring the accuracy of the aneroid in question the resulting accuracy is +/- 6 mmHg.

Welch Allyn Inc. Page 6 of 40

Welch Allyn Inc. Aneroid Sphygmomanometers Service Manual Revision A

1.4 Test Equipment Bench Layout

500cc Volume Digital

Pressure Meter

Gauge Under Test

Figure 1.5

Welch Allyn Inc. Page 7 of 40

Welch Allyn Inc. Aneroid Sphygmomanometers Service Manual Revision A

Section 2: Classic Pocket Aneroid Gauges

2.1 Opening/Removing and Replacing Parts of the Pocket Gauge*

1. Place the pocket gauge into the Pocket Gauge Fixture (T74555).

2. Remove the bezel by unscrewing it from the case and aside. Remove the crystal and aside.

3. Remove the pointer by using the pointer removal tool (T105243A).

4. Pry out the dial by using a small flat head screwdriver.

5. Remove the locking nut using the span wrench (T107345).

6. Remove the screw cap using (T113249) and remove the capsule.

Note:

7. Remove the 2 screws that are holding down the gauge movement using T108897 and remove the movement.

the arm of the movement fits into the top of the capsule.

Reassemble in reverse order.

* - See section 8.1 for exploded view drawing for the Pocket Gauge.

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Welch Allyn Inc. Aneroid Sphygmomanometers Service Manual Revision A

2.2 Calibration of the Pocket Gauge

1. Attach the pneumatic tubing of test equipment to the gauge.

2. Place gauge in to fixture (T74555)

3. Remove bezel, crystal, pointer and dial.

To set the tension:

4. Tighten all screws.

5. View sector gear and ensure proper position (i.e. right edge of sector gear should align with mark on base of movement).

6. If sector gear not aligned properly, loosen the capsule nut using a 3/8” wrench and adjust the sector gear by turning the capsule until sector gear is in correct position per step 5. Tighten capsule nut.

7. Loosen sector stop lug and pull toward bottom of gauge.

8. Using your left index finger, push the sector gear all the way to the post and hold that in position.

9. Place tension setting tool (T119628) onto pinion at the 9 o’clock position.

10. Rotate tool clock wise to the 3 o’clock position.

11. Release sector gear and continue rotation to the 6 o’clock position sector gear should be moving during this step).

12. Bring lug back to correct position and lock into place.

To set the span:

13. Place Test Dial onto gauge. Place pointer onto pinion. Rotate dial until pointer is at “0” at the bottom of the gauge.

14. Apply 320 mmHg to the Gauge.

15. Release pressure to 300 mmHg to the gauge.

16. If point is less than 300, Place the calibration tool (T106854A) into the radius plate in slot above screw. Pull calibration tool toward bottom of gauge moving the sector gear upward until pointer reached “300.” Release pressure and check “0” point.

17. If point is greater than 300, Using the calibration tool (T106845A) positioned between the sector gear and radius plate on the left of the movement, rotate the tool clock wise until pointer is at “300” (this brings the radius plate down). Release pressure and check “0” point.

18. If not at “0” upon release of pressure, rotate test dial until pointer is on the “0” mark of test dial and re-apply 300 mmHg. Repeat steps 14-17 until span is set.

19. Check for leak by pinching off the tubing from the test equipment while pressure is on the gauge. There should be no visible leak.

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Welch Allyn Inc. Aneroid Sphygmomanometers Service Manual Revision A

Check and finish calibration:

20. Remove the pointer and test dial, replace the gauge’s dial.

21. Place pointer onto pinion and resting in center of oval. Tap pointer with small hammer slightly to secure.

22. Apply 320 mmHg to the gauge.

23. Release pressure to 300 mmHg and take readings here and at given points (see section 1.3).

24. If pointer is greater than 300, pull pointer until you feel slight resistance counter-clock wise, tap pointer with small hammer and recheck. Make sure pointer returns to the oval each time. Repeat until satisfied.

25. If less than 300, rotate pointer 1 complete revolution clockwise until resistance is felt. Push pointer a little farther and tap pointer with small hammer and recheck. Make sure pointer returns to the oval each time. Repeat until satisfied.

26. Place crystal and bezel back onto gauge and check.

 Please see Section 8.8 for a drawing of the Welch Allyn Tycos Movement.

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Welch Allyn Inc. Aneroid Sphygmomanometers Service Manual Revision A

2.3 Testing

1. Hook up the Pocket Gauge that needs to be tested to the pneumatic tubing of the test equipment.

2. Apply 320 mmHg to the gauges.

3. Release the pressure to 300 mmHg on the digital pressure meter, or a calibrated aneroid or mercury gauge.

Note:

The aneroid or mercury gauge must be accurate to +/- 3 mmHg at the stated target pressures using a calibrated digital pressure meter. If using a calibrated aneroid or mercury column the accuracy must be +/6 mmHg.

4. Check reading of the pressure meter or gauge to that of the Pocket Gauge under test. Refer to section 1.3 for specifications.

Welch Allyn Inc. Page 11 of 40

Welch Allyn Inc. Aneroid Sphygmomanometers Service Manual Revision A

Section 3: Classic Hand Aneroid Gauge

3.1 Opening/Removing and Replacing Parts of the Hand

Gauge*

1. Pull bulb off of valve body (48S95).

2. Place the Hand Gauge into the Hand Gauge Fixture (T107569).

3. Remove the bezel by unscrewing it from the case and aside. Remove the crystal and aside.

4. Remove the pointer by using the pointer removal tool (T105243A).

5. Pry out the dial by using a small flat head screwdriver.

6. Remove the cover of the Hand Gauge by unscrewing the two screws (9P2651) with a Phillips head screwdriver.

7. Loosen the locking nut (32P527) from the capsule and remove both from the case.

8. Remove the 9P1799 screws from the case and movement and remove the movement from the case.

9. Remove the Thumbscrew by using tool # T113265 (Thumbscrew wrench) and turning the thumbscrew counter-clock wise.

10. Remove the Thumbscrew valve body (42P252) using a 5/8” socket.

11. Remove the valve body (48S95) from the case using a 1/2” socket.

Reassemble in reverse order

* - See section 8.2 for an exploded view drawing of the Hand Gauge.

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Welch Allyn Inc. Aneroid Sphygmomanometers Service Manual Revision A

3.2 Calibration of the Hand Gauge

1. Attach the pneumatic tubing of test equipment to the gauge.

2. Ensure that the valve of the gauge is closed. Place gauge in to fixture (T107569)

3. Increase pressure on the gauge to 250 mmHg. Allow the pressure to stabilize for 15 seconds. Check leak and ensure that the leak is no greater than 3 mmHg in 15 seconds.

4. Remove bezel, crystal, pointer and dial.

To set the tension:

5. Tighten all screws.

6. View sector gear and ensure proper position (i.e. right edge of sector gear should align with mark on base of movement).

7. If sector gear not aligned properly, loosen the capsule nut using a 3/8” wrench and adjust the sector gear by turning the capsule until sector gear is in correct position per step 5. Tighten capsule nut.

8. Loosen sector stop lug and pull toward bottom of gauge.

9. Using your left index finger, push the sector gear all the way to the post and hold that in position.

10. Place tension setting tool (T119628) onto pinion at the 9 o’clock position.

11. Rotate tool clock wise to the 3 o’clock position.

12. Release sector gear and continue rotation to the 6 o’clock position sector gear should be moving during this step).

13. Bring lug back to correct position and lock into place.

To set the span:

14. Place Test Dial onto gauge. Place pointer onto pinion. Rotate dial until pointer is at “0” at the bottom of the gauge.

15. Apply 320 mmHg to the Gauge.

16. Release pressure to 300 mmHg to the gauge.

17. If point is less than 300, Place calibration tool (T106845A) into the radius plate in slot above screw. Pull calibration tool toward bottom of gauge moving the sector gear upward until pointer reached “300.” Release pressure and check “0” point.

18. If point is greater than 300, Using the calibration tool (T106845A) positioned between the sector gear and radius plate on the left of the movement, rotate the tool clock wise until pointer is at “300” (this brings the radius plate down). Release pressure and check “0” point.

19. If not at “0” upon release of pressure, rotate test dial until pointer is on the “0” mark of test dial and re-apply 300 mmHg. Repeat steps 14-17 until span is set.

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Welch Allyn Inc. Aneroid Sphygmomanometers Service Manual Revision A

Check and finish calibration:

20. Remove the pointer and test dial, replace the gauge’s dial.

21. Place pointer onto pinion and resting in center of oval. Tap pointer with small hammer slightly to secure.

22. Apply 320 mmHg to the gauge.

23. Release pressure to 300 mmHg and take readings here and at given points (see section 1.3)

24. If pointer is greater than 300, pull pointer until you feel slight resistance counter-clock wise, tap pointer with small hammer and recheck. Make sure pointer returns to the oval each time. Repeat until satisfied.

25. If less than 300, rotate pointer 1 complete revolution clockwise until resistance is felt. Push pointer a little farther and tap pointer with small hammer and recheck. Make sure pointer returns to the oval each time. Repeat until satisfied.

26. Place crystal and bezel back onto gauge and check.

 Please see section 8.8 for drawing of Welch Allyn Tycos movement.

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Welch Allyn Inc. Aneroid Sphygmomanometers Service Manual Revision A

3.3 Testing

1. Hook up the Hand Gauge that needs to be tested to the pneumatic tubing of the test equipment.

2. Apply 320 mmHg to the gauge.

3. Release the pressure to 300 mmHg. on the digital pressure meter, or a calibrated aneroid or mercury gauge.

Note:

The aneroid or mercury gauge must be accurate to +/- 3 mmHg at the stated target pressures using a calibrated digital pressure meter. If using a calibrated aneroid or mercury column the accuracy must be +/6 mmHg.

4. Check reading of the pressure meter or gauge to that of the Hand Gauge under test. Refer to section 1.3 for specifications.

Welch Allyn Inc. Page 15 of 40

Welch Allyn Inc. Aneroid Sphygmomanometers Service Manual Revision A

Section 4: Classic Wall and Mobile Aneroid Gauge

4.1 Opening/Removing and Replacing Parts of the Wall

and Mobile Gauge.*

7670 series Wall and Mobile Aneroid.

1. Remove the bezel from the case by prying the 4 tabs up and pulling out on the bezel.

2. Remove the crystal and aside.

3. Remove the pointer by using the pointer removal tool (T105243B) visually inspect, straighten and aside.

4. Remove the screws of the dial by using the torque driver (T112459) and remove the dial and aside.

5. Remove the screws that are holding down the mount to the case of the gauge by using a Phillips head screwdriver.

Reassemble in reverse order

* - See section 8.3 for exploded view drawing of 7670 Series Wall and Mobile Aneroid.

Classic Wall and Mobile Aneroid.

1. Remove crystal by pushing down and out at the top. Set crystal aside.

2. Remove pointer by using the pointer removal tool (T105243B). Inspect, straighten and aside pointer.

3. Remove the dial by removing the screws with the torque driver (T112459) and aside.

4. Remove the movement and the mount by unscrewing the standoffs and removing them from the case.

Reassemble in reverse order

* - See section 8.4 for exploded view drawing of the Classic Wall and Mobile Aneroid.

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Welch Allyn Inc. Aneroid Sphygmomanometers Service Manual Revision A

4.2 Calibration of the Wall and Mobile Gauge

1. Attach the pneumatic tubing of test equipment to the gauge.

2. Remove bezel, crystal, pointer and dial.

To set the tension:

3. Tighten all screws.

4. View sector gear and ensure proper position (i.e. right edge of sector gear should align with mark on base of movement).

5. If sector gear not aligned properly, loosen the capsule nut using a 3/8” wrench and adjust the sector gear by turning the capsule until sector gear is in correct position per step 5. Tighten capsule nut.

6. Loosen sector stop lug and pull toward bottom of gauge.

7. Using your left index finger, push the sector gear all the way to the post and hold that in position.

8. Place tension setting tool (T119628) onto pinion at the 9 o’clock position.

9. Rotate tool clock wise to the 3 o’clock position.

10. Release sector gear and continue rotation to the 6 o’clock position sector gear should be moving during this step).

11. Bring lug back to correct position and lock into place.

To set the span:

12. Place Test Dial onto gauge. Place pointer onto pinion. Rotate dial until pointer is at “0” at the bottom of the gauge.

13. Apply 320 mmHg to the Gauge.

14. Release pressure to 300 mmHg to the gauge.

15. If point is less than 300, Place calibration tool (T106845A) into the radius plate in slot above screw. Pull calibration tool toward bottom of gauge moving the sector gear upward until pointer reached “300.” Release pressure and check “0” point.

16. If point is greater than 300, Using the calibration tool (T106845A) positioned between the sector gear and radius plate on the left of the movement, rotate the tool clock wise until pointer is at “300” (this brings the radius plate down). Release pressure and check “0” point.

17. If not at “0” upon release of pressure, rotate test dial until pointer is on the “0” mark of test dial and re-apply 300 mmHg. Repeat steps 14-17 until span is set.

18. Check for leak by pinching off the tubing from the test equipment while pressure is on the gauge. There should be no visible leak.

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Welch Allyn Inc. Aneroid Sphygmomanometers Service Manual Revision A

Check and finish calibration:

19. Remove the pointer and test dial, replace the gauge’s dial.

20. Place pointer onto pinion and resting in center of oval. Tap pointer with small hammer slightly to secure.

21. Apply 320 mmHg to the gauge.

22. Release pressure to 300 mmHg and take readings here and at given points (see section 1.3)

23. If pointer is greater than 300, pull pointer until you feel slight resistance counter-clock wise, tap pointer with small hammer and recheck. Make sure pointer returns to the oval each time. Repeat until satisfied.

24. If less than 300, rotate pointer 1 complete revolution clockwise until resistance is felt. Push pointer a little farther and tap pointer with small hammer and recheck. Make sure pointer returns to the oval each time. Repeat until satisfied.

25. Place crystal and bezel back onto gauge and check.

 Please see section 8.8 for a drawing of the Welch Allyn Tycos Movement

Welch Allyn Inc. Page 18 of 40

Welch Allyn Inc. Aneroid Sphygmomanometers Service Manual Revision A

4.3 Testing

1. Hook up the Wall or Mobile Gauge that needs to be tested to the pneumatic tubing of the test equipment.

2. Apply 320 mmHg to the gauge.

3. Release the pressure to 300 mmHg on the digital pressure meter, or a calibrated aneroid or mercury gauge.

Note:

The aneroid or mercury gauge must be accurate to +/- 3 mmHg at the stated target pressures using a calibrated digital pressure meter. If using a calibrated aneroid or mercury column the accuracy must be +/6 mmHg.

4. Check reading of the pressure meter or gauge to that of the Wall or mobile gauge under test. Refer to section 1.3 for specifications.

Welch Allyn Inc. Page 19 of 40

Welch Allyn Inc. Aneroid Sphygmomanometers Service Manual Revision A

Section 5: Economy Aneroid Gauge

5.1 Opening/Removing and Replacing Parts of the

Economy Gauge*

1. Remove the two screws from the back of the case using a Phillips head screwdriver. Aside the screws and the clip.

2. Remove the Economy cover an d crystal and aside.

3. Remove the pointer using the pointer removal tool (T105243B). Inspect, straighten and aside the pointer

4. Pry the dial from the case using a small flat head screwdriver.

5. Remove the movement from the case using T108897 and aside.

6. Loosen screw from the case using T105258 and remove the capsule.

Reassemble In reverse Order

* - See section 8.5 for exploded view drawing for the Economy Aneroid.

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Welch Allyn Inc. Aneroid Sphygmomanometers Service Manual Revision A

5.2 Calibration of the Economy Gauge

1. Attach the pneumatic tubing of test equipment to the gauge.

2. Place gauge in to fixture (T108212)

3. Remove bezel, crystal, pointer and dial.

To set the tension:

4. Tighten all screws.

5. View sector gear and ensure proper position (i.e. right edge of sector gear should align with mark on base of movement).

6. If sector gear not aligned properly, loosen the capsule nut using wrench (T105258) and adjust the sector gear by turning the capsule until sector gear is in correct position per step 5. Tighten capsule nut.

7. Loosen sector stop lug and pull toward bottom of gauge.

8. Using your left index finger, push the sector gear all the way to the post and hold that in position.

9. Place tension setting tool (T119628) onto pinion at the 9 o’clock position.

10. Rotate tool clock wise to the 3 o’clock position.

11. Release sector gear and continue rotation to the 6 o’clock position sector gear should be moving during this step).

12. Bring lug back to correct position and lock into place.

To set the span:

13. Place Test Dial onto gauge. Place pointer onto pinion. Rotate dial until pointer is at “0” at the bottom of the gauge.

14. Apply 320 mmHg to the Gauge.

15. Release pressure to 300 mmHg to the gauge.

16. If point is less than 300, Place calibration tool (T106845A) into the radius plate in slot above screw. Pull calibration tool toward bottom of gauge moving the sector gear upward until pointer reached “300.” Release pressure and check “0” point.

17. If point is greater than 300, Using the calibration tool (T106845A) positioned between the sector gear and radius plate on the left of the movement, rotate the tool clock wise until pointer is at “300” (this brings the radius plate down). Release pressure and check “0” point.

18. If not at “0” upon release of pressure, rotate test dial until pointer is on the “0” mark of test dial and re-apply 300 mmHg. Repeat steps 14-17 until span is set.

19. Check for leak by pinching off the tubing from the test equipment while pressure is on the gauge. There should be no visible leak.

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Welch Allyn Inc. Aneroid Sphygmomanometers Service Manual Revision A

Check and finish calibration:

20. Remove the pointer and test dial, replace the gauge’s dial.

21. Place pointer onto pinion and resting in center of oval. Tap pointer with small hammer slightly to secure.

22. Apply 320 mmHg to the gauge.

23. Release pressure to 300 mmHg and take readings here and at given points (see section 1.3)

24. If pointer is greater than 300, pull pointer until you feel slight resistance counter-clock wise, tap pointer with small hammer and recheck. Make sure pointer returns to the oval each time. Repeat until satisfied.

25. If less than 300, rotate pointer 1 complete revolution clockwise until resistance is felt. Push pointer a little farther and tap pointer with small hammer and recheck. Make sure pointer returns to the oval each time. Repeat until satisfied.

26. Place crystal and bezel back onto gauge and check.

 Please see section 8.8 for a drawing of the Welch Allyn Tycos Movement

Welch Allyn Inc. Page 22 of 40

Welch Allyn Inc. Aneroid Sphygmomanometers Service Manual Revision A

5.3 Testing

1. Hook up the Economy Gauge that needs to be tested to the pneumatic tubing of the test equipment.

2. Apply 320 mmHg to the gauge.

3. Release the pressure to 300 mmHg on the digital pressure meter, or a calibrated aneroid or mercury gauge.

Note:

The aneroid or mercury gauge must be accurate to +/- 3 mmHg at the stated target pressures using a calibrated digital pressure meter. If using a calibrated aneroid or mercury column the accuracy must be +/6 mmHg.

4. Check reading of the pressure meter or gauge to that of the Economy gauge under test. Refer to section 1.3 for specifications.

Welch Allyn Inc. Page 23 of 40

Welch Allyn Inc. Aneroid Sphygmomanometers Service Manual Revision A

Section 6: Silver Ring Hand Aneroid

6.1 Opening/Removing and Replacing Parts of the Silver

Ring

1. Unscrew the bulb from the gauge.

2. Place screwdriver under the bezel in the opening provided and lift bezel.

3. Place screwdriver under the crystal in the opening provided and lift the crystal.

4. Using the T105243A pointer removal tool, remove the pointer from the pinion.

5. Remove the dial from the housing.

6. Remove the movement using T112833 movement removal tool.

7. Remove the movement internal housing.

8. Remove the valve body-trigger module.

Reassemble in reverse order (Ensure you tighten the movement down with Torque wrench T112653 using adapter T112653A)

* - See section 8.6 for drawing of the Silver Ring Gauge.

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Welch Allyn Inc. Aneroid Sphygmomanometers Service Manual Revision A

6.2 Calibration of the Silver Ring Hand Aneroid

1. Obtain gage assembly, attach air supply with luer fitting

2. Position test dial and test pointer on gage

.

3. Apply 300 mmHg pressure. View gauge and ensure the leak is no greater than 10 mmHg in 5 seconds.

SPAN ADJUSTMENT

From average "0" starting position, pressure gage to 320 then down to 300 mmHg. Note position and maintain pressure:

1. If span is too low - obtain tweezers or jewelers screwdriver and bend the adjustment pin away from pinion parallel to gear sector arm. Change pressure to 0, make sure to re-adjust the test dial so that the pointer will be slightly left of the graduation line. Re-pressurize to 320 then to 300 to evaluate effects of adjustment.

2. If span is too high - obtain tweezers or jewelers screwdriver and bend the adjustment pin towards the pinion parallel to the gear sector when pressurized at 300. Change pressure to 0, make sure to re-adjust the test dial so that the pointer will be slightly left of the graduation line. Re-pressurize to 320 then to 300 to evaluate effects of adjustment.

3. Repeat above steps as required to obtain correct span adjustment.

LINEARITY ADJUSTMENT - (As required) If 0 and 300 position are correct, and other points at 250, 200, 150, 100 or 60 are either too high or too low at one or more points, then perform the following adjustments. HIGH GAGE READINGS - (Predominantly at 250 and 200)

1. Remove test pointer and test dial. Obtain calibration tool and position over adjusting pin down to cross shaft, (move gear sector with finger of other hand to allow access). Rotate pin to move hook away from diaphragm approx. 15 degrees. While maintaining this position, lift tool up from cross shaft approx. 1/16 inch and bend the pin back towards the operator approx. 15 degrees. Lift the calibration tool up to the point where the pin makes contact with the gear sector and bend the pin up, (away from operator) approx. 30 degrees.

2. Remove tool and release gear sector. The resultant bend should result in the gear sector starting position being a max. of 2 teeth extending beyond the top plate when viewed from a top position and a minimum of 2 teeth within the edge of the top plate. (This must be checked by pushing the gear sector 2 teeth from the other side of the top plate). Adjust secondary bend if gear sector is out of these limits. Re-assemble test dial and pointer, recheck span and adjust as necessary prior to inspection at intermediate points.

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Welch Allyn Inc. Aneroid Sphygmomanometers Service Manual Revision A

LOW GAGE READINGS - (Predominantly at 60 and 100)

1. Remove test pointer and test dial. Obtain calibration tool and position over

adjusting pin down to cross shaft. Lift tool approx. 1/16 inch and bend the pin away from operator approx. 15 degrees. While maintaining this position, lift tool to point where pin makes contact with the gear sector. Bend the pin down or towards the operator approx. 30 degrees. Remove tool and release gear sector. Check for gear sector starting position as defined previously, adjust if necessary. Re-assemble test dial and pointer, recheck span and adjust as necessary prior to inspection at intermediate points. NOTE: In all adjustments during calibration, the gear sector starting position will affect accuracy. Sometimes, this alone can be used as an individual adjustment to achieve conformance. Higher readings will be realized when the gear sector is extending beyond the edge of the top plate and lower readings will be realized when it is within the edge of the top plate.

 - See Section 8.9 for drawing of the S+K Movement.

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Welch Allyn Inc. Aneroid Sphygmomanometers Service Manual Revision A

6.3 Testing of the Silver Ring Hand Aneroid

1. Hook up the Silver Ring Hand Gauge that needs to be tested to the pneumatic tubing of the test equipment.

2. Apply 320 mmHg to the gauge.

3. Release the pressure to 300 mmHg on the digital pressure meter, or a calibrated aneroid or mercury gauge.

Note:

The aneroid or mercury gauge must be accurate to +/- 3 mmHg at the stated target pressures using a calibrated digital pressure meter. If using a calibrated aneroid or mercury column the accuracy must be +/6 mmHg.

4. Check reading of the pressure meter or gauge to that of the Silver Ring Hand Gauge under test. Refer to section 1.3 for specifications.

Welch Allyn Inc. Page 27 of 40

Welch Allyn Inc. Aneroid Sphygmomanometers Service Manual Revision A

Section 7: Pro Check Hand Aneroid

7.1 Opening/Removing and Replacing Parts of Pro

Check Hand Aneroid

1. Insert screwdriver at bottom of the crystal and pry out crystal.

2. Loosen and remove pointer using T105243A.

3. Insert screwdriver at bottom of the dial and remove the dial from the gauge.

4. Unscrew the complete base plate with the movement and remove the washer using T112833 movement removal tool.

Reassemble in reverse order(Ensure you tighten the movement down with Torque wrench T112653 using adapter T112653A)

* - See Section 8.7 for drawing of the Pro Check Hand Gauge

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Welch Allyn Inc. Aneroid Sphygmomanometers Service Manual Revision A

7.2 Calibration of the Pro Check Hand Aneroid

1. Obtain gage assembly, attach air supply with luer fitting

2. Position test dial and test pointer on gage

.

3. Apply 300 mmHg pressure. View gauge and ensure the leak is no greater than 10 mmHg in 5 seconds.

SPAN ADJUSTMENT

From average "0" starting position, pressure gage to 320 then down to 300 mmHg. Note position and maintain pressure:

1. If span is too low - obtain tweezers or jewelers screwdriver and bend the adjustment pin away from pinion parallel to gear sector arm. Change pressure to 0, make sure to re-adjust the test dial so that the pointer will be slightly left of the graduation line. Re-pressurize to 320 then to 300 to evaluate effects of adjustment.

2. If span is too high - obtain tweezers or jewelers screwdriver and bend the adjustment pin towards the pinion parallel to the gear sector when pressurized at 300. Change pressure to 0, make sure to re-adjust the test dial so that the pointer will be slightly left of the graduation line. Re-pressurize to 320 then to 300 to evaluate effects of adjustment.

3. Repeat above steps as required to obtain correct span adjustment.

LINEARITY ADJUSTMENT - (As required) If 0 and 300 position are correct, and other points at 250, 200, 150, 100 or 60 are either too high or too low at one or more points, then perform the following adjustments. HIGH GAGE READINGS - (Predominantly at 250 and 200)

1. Remove test pointer and test dial. Obtain calibration tool and position over adjusting pin down to cross shaft, (move gear sector with finger of other hand to allow access). Rotate pin to move hook away from diaphragm approx. 15 degrees. While maintaining this position, lift tool up from cross shaft approx. 1/16 inch and bend the pin back towards the operator approx. 15 degrees. Lift the calibration tool up to the point where the pin makes contact with the gear sector and bend the pin up, (away from operator) approx. 30 degrees.

2. Remove tool and release gear sector. The resultant bend should result in the gear sector starting position being a max. of 2 teeth extending beyond the top plate when viewed from a top position and a minimum of 2 teeth within the edge of the top plate. (This must be checked by pushing the gear sector 2 teeth from the other side of the top plate). Adjust secondary bend if gear sector is out of these limits. Re-assemble test dial and pointer, recheck span and adjust as necessary prior to inspection at intermediate points.

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LOW GAGE READINGS - (Predominantly at 60 and 100)

1. Remove test pointer and test dial. Obtain calibration tool and position over

adjusting pin down to cross shaft. Lift tool approx. 1/16 inch and bend the pin away from operator approx. 15 degrees. While maintaining this position, lift tool to point where pin makes contact with the gear sector. Bend the pin down or towards the operator approx. 30 degrees. Remove tool and release gear sector. Check for gear sector starting position as defined previously, adjust if necessary. Re-assemble test dial and pointer, recheck span and adjust as necessary prior to inspection at intermediate points. NOTE: In all adjustments during calibration, the gear sector starting position will affect accuracy. Sometimes, this alone can be used as an individual adjustment to achieve conformance. Higher readings will be realized when the gear sector is extending beyond the edge of the top plate and lower readings will be realized when it is within the edge of the top plate.

 - See Section 8.9 for drawing of the S+K Movement.

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7.3 Testing of the Pro Check Hand Aneroid

1. Hook up the Pro Check Hand Gauge that needs to be tested to the pneumatic tubing of the test equipment.

2. Apply 320 mmHg to the gauge.

3. Release the pressure to 300 mmHg on the digital pressure meter, or a calibrated aneroid or mercury gauge.

Note:

The aneroid or mercury gauge must be accurate to +/- 3 mmHg at the stated target pressures using a calibrated digital pressure meter. If using a calibrated aneroid or mercury column the accuracy must be +/6 mmHg.

4. Check reading of the pressure meter or gauge to that of the Pro Check Hand Gauge under test. Refer to section 1.3 for specifications.

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Section 8: Pictures and Replacement Parts

Section 8.1: Classic Pocket Aneroid Replacement Parts

The following are the list of replacement parts for the Pocket Aneroid Gauge that can be purchased through Welch Allyn Inc.

Part Number Description

51P52 Clip Assembly 2P1623 Case 32P180 Lock nut 34P760 Crystal 3P831 Bezel 35P804 Screw cap (NS) 61S681 Diaphragm Assembly 63S401 Pointer 93S617 Movement 9P1799 Screw, Movement 11P363 Spring 7P689 Pin for Clip

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Section 8.2: Classic Hand Aneroid Replacement Parts

The following are the list of replacement parts for the Classic Hand Aneroid Gauge that can be purchased through Welch Allyn Inc.

Part Number Description Part Number Description

12P368 Lure Lock Fitting 2P1628 Cover, Hand Gauge 9P2651 Screw, Cover 3P831 Bezel 9S132 Thumb Screw 34P760 Crystal 42P252 Valve Body Assembly 63S401 Pointer 5090-30 Screen Assy/Bulb Adapter 9P1799 Screw, Movement 12P490 Bulb Adapter 93S617 Movement 2P1627A Case 61S694 Diaphragm Assembly 5086-01 Bulb 32P527 Lock Nut

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Section 8.3: 767 Wall/Mobile Aneroid Replacement Parts

The following are the list of replacement parts for the 767 Wall/Mobile Aneroid Gauge that can be purchased through Welch Allyn Inc.

Part Number Description

3P844 Bezel 34P768 Crystal 63S412 Pointer 93S617A Movement 61S681 Diaphragm Assembly 2P1138 Mount 32P727 Nut 2P1631 Case 32P763 Lock nut, Case - Not pictured 8P1064 Bushing - Not pictured 96P135 Basket - Not pictured 9P2841 Dial Mounting Screw

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Section 8.4: Classic Wall/Mobile Aneroid Replacement Parts

The following are the list of replacement parts for the Classic Wall/Mobile Aneroid Gauge that can be purchased through Welch Allyn Inc.

Part Number Description Part number Description

2P1138 Mount 34P417 Crystal 9P1804 Spacer 9P2841 Dial Mounting Screw 61S681 Diaphragm Assembly 63S298 Pointer, USA 32P727 Jam Nut 63S402 Pointer, Japan - Not pictured 14P1718 Bracket 2P1503 Case (Gray) 9P2455 Bracket Screw 2P1124 Case (Beige) - Not pictured 8P949 Bracket Bushing 9P2465 Screw (Case) 32P763 Bracket Nut 22P830 Washer (Case) 93S617A Movement

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Section 8.5: Economy Aneroid Replacement Parts

The following are the list of replacement parts for the Economy Aneroid Gauge that can be purchased through Welch Allyn Inc.

Part Number Description

2P1437 Cover for Economy Aneroid 2P1626C Case for Economy Aneroid 34P640 Crystal 93S618 Movement 2P1130D Clip 32P727 Jam Nut 63S401 Pointer 9P2563 Screw (Case) 61S693 Capsule 9P1799 Screw, Movement

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Section 8.6: Silver Ring Hand Aneroid Replacement Parts

The following are the list of replacement parts for the Silver Ring Hand Aneroid Gauge that can be purchased through Welch Allyn Inc.

Part Number Description Part Number Description

12P368 Adapter 52P1848 Dial 75P240 O-Ring 18P189 Bulb Collar 2P1632 Housing 23P428 Bulb Adapter 33P131 Movement Cup 97S581 Bulb 70P450 Button 11P1240 Spring 7P716 Pivot Pin 42S242 Valve Body 93S720 Movement 8S61 Valve Assembly 22P1455 Washer Silicon 5090-30 Screen Assy/Bulb Adapter 34P434 Crystal 3P847 Bezel 39P505 Trim Ring 63S410 Pointer

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Section 8.7: Pro Check Hand Aneroid Replacement Parts

The following are the list of replacement parts for the Silver Ring Hand Aneroid Gauge that can be purchased through Welch Allyn Inc.

Part Number Description

34P761 Crystal 63S416 Pointer 52P1845 Dial 93S720 Movement 22P1460 Washer 97S583 Bulb 18P190 Bulb Ring 70P446 Trigger 8S61 Valve Assy 11P1240 Spring - Not pictured

52-09-950 Housing (order from S+K) 15-40-000 Valve Body (order from S+K)

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Section 8.8: Welch Allyn Tycos Movement

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Section 8.9: Welch Allyn S+K Movement

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Welch Allyn Tycos User manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of Contents