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Tycos
User manual
40 pgs313.88 Kb0
User manual
18 pgs318.25 Kb0

Welch Allyn Tycos User manual

Service Manual
Manuals
Operator Manual
Aneroid Sphygmomanometers
PN 95P504 Rev A
Copyright 2000
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

Table of Contents

Section 1: General Information....................................................................................................................... 4
1.1 To Service Personnel ............................................................................................................................ 4
1.2 Tools and Equipment............................................................................................................................5
1.3 Test Specifications................................................................................................................................ 6
1.4 Test Equipment Bench Layout.............................................................................................................. 7
Section 2: Classic Pocket Aneroid Gauges ..................................................................................................... 8
2.1 Opening/Removing and Replacing Parts of the Pocket Gauge* ........................................................... 8
2.2 Calibration of the Pocket Gauge........................................................................................................... 9
2.3 Testing ................................................................................................................................................ 11
Section 3: Classic Hand Aneroid Gauge....................................................................................................... 12
3.1 Opening/Removing and Replacing Parts of the Hand Gauge*............................................................ 12
3.2 Calibration of the Hand Gauge ........................................................................................................... 13
3.3 Testing ................................................................................................................................................ 15
Section 4: Classic Wall and Mobile Aneroid Gauge..................................................................................... 16
4.1 Opening/Removing and Replacing Parts of the Wall and Mobile Gauge.* ........................................ 16
7670 series Wall and Mobile Aneroid. ................................................................................................. 16
Classic Wall and Mobile Aneroid......................................................................................................... 16
4.2 Calibration of the Wall and Mobile Gauge......................................................................................... 17
4.3 Testing ................................................................................................................................................ 19
Section 5: Economy Aneroid Gauge............................................................................................................. 20
5.1 Opening/Removing and Replacing Parts of the Economy Gauge*.....................................................20
5.2 Calibration of the Economy Gauge..................................................................................................... 21
5.3 Testing ................................................................................................................................................ 23
Section 6: Silver Ring Hand Aneroid........................................................................................................... 24
6.1 Opening/Removing and Replacing Parts of the Silver Ring ............................................................... 24
6.2 Calibration of the Silver Ring Hand Aneroid......................................................................................25
6.3 Testing of the Silver Ring Hand Aneroid............................................................................................ 27
Section 7: Pro Check Hand Aneroid............................................................................................................. 28
7.1 Opening/Removing and Replacing Parts of Pro Check Hand Aneroid............................................... 28
7.2 Calibration of the Pro Check Hand Aneroid.......................................................................................29
7.3 Testing of the Pro Check Hand Aneroid.............................................................................................31
Section 8: Pictures and Replacement Parts................................................................................................... 32
Section 8.1: Classic Pocket Aneroid Replacement Parts...........................................................................32
Section 8.2: Classic Hand Aneroid Replacement Parts.............................................................................33
Section 8.3: 767 Wall/Mobile Aneroid Replacement Parts....................................................................... 34
Section 8.4: Classic Wall/Mobile Aneroid Replacement Parts................................................................. 35
Section 8.5: Economy Aneroid Replacement Parts...................................................................................36
Section 8.6: Silver Ring Hand Aneroid Replacement Parts......................................................................37
Section 8.7: Pro Check Hand Aneroid Replacement Parts........................................................................ 38
Section 8.8: Welch Allyn Tycos Movement ............................................................................................. 39
Section 8.9: Welch Allyn S+K Movement................................................................................................40
Welch Allyn Inc. Page 3 of 40
Section 1: General Information
1.1 To Service Personnel
The information contained in this manual is subject to change without notice and should not be construed as commitment by Welch Allyn Inc.
Welch Allyn Inc. assumes no responsibility for any errors that may appear in this manual. If the product and/or its operation varies significantly from any description herein, please contact the
Welch Allyn Inc. Technical Service Center 800-450-9275 (828) 684-4895 Fax (828) 687-1002
Welch Allyn Inc. 95 Old Shoals Road Arden, North Carolina 28704 USA
This product has been designed to provide a high degree of safety and reliability. However, Welch Allyn Inc. can not guarantee against: deterioration of components due to aging, normal wear, tampering, and abuse.
Warning:
If in the course performing calibration or repair on the gauge the device becomes inoperable and must be sent in to the Welch Allyn Inc. Service Center, The warranty will
not
be
honored and you will be charge for all repairs.
Welch Allyn Inc. Page 4 of 40
1.2 Tools and Equipment
The following is a list of the tools and equipment that is required to do the repair and calibration of the aneroid gauges.
Tool Number Description
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
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
1.4 Test Equipment Bench Layout
500cc Volume Digital
Pressure Meter
Gauge Under Test
Figure 1.5
Welch Allyn Inc. Page 7 of 40
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.
Welch Allyn Inc. Page 8 of 40
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.
Welch Allyn Inc. Page 9 of 40
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 10 of 40
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
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.
Welch Allyn Inc. Page 12 of 40
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