Porcentaje del PIB por sectores
4. ÁREA DE ESTUDIO
5.3 Evolución de los componentes del paisaje
TO MORE THAN 690 kPa (100 psig). FAILURE TO OBSERVE THIS CAUTION CAN RESULT IN DAMAGE TO THE FILTER SHUT-OFF VALVE MECHANISM.
B. The test fluid must be clean to NAS1638, Class 5 or better.
C. Unless specified differently, the temperature of the test fluid must be 30 ± 10°C (86 ± 18°F) during the tests.
D. If a tolerance is not given in the procedure, the tolerances that follow must be used:
(1) Pressure: ± 5% or 3,4 kPag (0.5 psig). Use the largest tolerance.
(2) Temperature: ± 2.5°C (5°F).
(3) Flow: ± 0,38 l/min (0.1 US gpm) for flows of more than 7,61 l/min (2 US gpm) or ± 5%
for flows of less than 7,61 l/min (2 US gpm).
E. If the results of a test are unsatisfactory, refer to Fault Isolation to find the possible cause and recommended procedure for correction.
F. During all tests, all connections must have blanks installed unless specified differently.
G. All item numbers relate to IPL Figure 1.
H. Refer to ACMM 29-12-01 to test pressure transducer 2329H100 (IPL 1-700).
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TASK-29-11-69-94B-801-A01 2. Test Equipment
The test equipment given in Table 1001 is necessary for the tests given in this Section (Refer to Table 1001 “TABLE-29-11-69-99A-802-A01”).
TABLE-29-11-69-99A-802-A01 Test Equipment—Table 1001 NOTE: Equivalent alternatives can be used for these items.
NOMENCLATURE PART No./TYPE USE
Flexible hoses - Figure 1001 (Refer to Figure 1001
“GRAPHIC-29-11-69-99B-805-A01”) Shut-off valves (quantity 8) - Figure 1001 (Refer to Figure 1001
“GRAPHIC-29-11-69-99B-805-A01”) and Figure 1003 (Refer to Figure 1003
“GRAPHIC-29-11-69-99B-806-A01”)
Connection blanks - Figure 1001 (Refer to Figure 1001
“GRAPHIC-29-11-69-99B-805-A01”) Pressure gauge,
0 to 31028 kPa (0 to 4500 psi)
- Figure 1001 (Refer to Figure 1001
“GRAPHIC-29-11-69-99B-805-A01”)
Drip spouts (quantity 3) - Figure 1001 (Refer to Figure 1001
“GRAPHIC-29-11-69-99B-805-A01”) Pressure/return filter
element blank
5688K000 Pressure and return line tests
Case drain filter element blank
5689K000 Case drain line tests
Flowmeter, 0 to 75 l/min (0 to 20 US gpm)
- Main assembly flow tests
Differential pressure gauge, 0 to 2000 kPad (0 to 290 psid)
- Differential pressure measurement
Dynamic pressure supply, 0 to 31028 kPa (0 to 4500 psi) at flows up to 72 l/min (19 US gpm)
- Pressure supply for all tests
Hand pump supply
0 to 31028 kPa (0 to 4500 psi)
- Pressure supply for main assembly leak tests
Test Equipment (Sheet 1 of 2)—Table 1001
COMPONENT MAINTENANCE MANUAL
Part No. 2346H000-002, 2346H000-003, 2346H000-004, 2346H000-005 AND 2346H000-006
TASK-29-11-69-94A-801-A01 3. Materials
The materials necessary for testing are shown in Table 1002 (Refer to Table 1002 “TABLE-29-11-69-99A-803-A01”).
Filter, 3 micron. Installed in the pressure supply line, upstream of the manifold assembly
- Removal of contamination
Voltmeter - Pressure transducer test
Low resistance ohmmeter - Bonding test
Test fixture 5697K000 Figure 1003 (Refer to Figure 1003
“GRAPHIC-29-11-69-99B-806-A01”) Pressure gauge, 0 to
35000 kPa (0 to 5000 psi)
- Figure 1003 (Refer to Figure 1003
“GRAPHIC-29-11-69-99B-806-A01”) Pressure gauges, 0 to 750
kPa (0 to 100 psi) (quantity 2)
- Figure 1003 (Refer to Figure 1003
“GRAPHIC-29-11-69-99B-806-A01”)
Pressure gauge, 0 to 100 kPa (0 to 10 psi)
- Figure 1003 (Refer to Figure 1003
“GRAPHIC-29-11-69-99B-806-A01”) Flowmeter, 0 to 100 l/min
(0 to 20 US gpm)
- Figure 1003 (Refer to Figure 1003
“GRAPHIC-29-11-69-99B-806-A01”)
Test fixture TBD Differential pressure indicator tests
Test fixture 5747K000-001 Figure 1004 (Refer to Figure 1004
“GRAPHIC-29-11-69-99B-809-A01”) NOTE: Equivalent alternatives can be used for these items.
NOMENCLATURE PART No./TYPE USE
Test Equipment (Sheet 2 of 2)—Table 1001
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TABLE-29-11-69-99A-803-A01 Test Materials—Table 1002
TASK-29-11-69-700-801-A01 4. Main Assembly Test Procedure SUBTASK-29-11-69-790-001-A01
A. Manifold Bleed and Filter Shut-off Valves Leakage
(1) Connect a pressure supply to the manifold and attach drip spouts as shown in Figure 1001 (Refer to Figure 1001 “GRAPHIC-29-11-69-99B-805-A01”).
(2) Apply a pressure of 690 kPag (100 psig) to the manifold, and bleed all air from the unit through the drip spouts.
(3) Decrease the pressure to zero and replace the drip spouts with the pressure supply.
(4) Apply a pressure of 207 kPag (30 psig) to all six connections at the same time.
(5) Remove all three filter bowls and filter elements as given in DISASSEMBLY.
(6) Increase the pressure to 690 kPag (100 psig). Remove any fluid from the lower surface of each filter housing head.
(7) During a 2 minute period make sure that there is no leakage from each shut-off valve head.
(8) Decrease the pressure to zero. Install the pressure filter element and bowl on the manifold as given in ASSEMBLY and remove the test equipment.
SUBTASK-29-11-69-790-002-A01 B. Return Bypass Valve
(1) Install a return filter element blank and the return filter bowl on the manifold.
NOTE: Equivalent alternatives can be used for these items.
NOMENCLATURE PART No./TYPE SUPPLIER
Test fluid, phosphate ester hydraulic fluid
AS1241 Type IV Class I (Skydrol LD IV)
Commercially available
Cloth (must not contain lint) DEF1410 Commercially available Test Materials —Table 1002
COMPONENT MAINTENANCE MANUAL
Part No. 2346H000-002, 2346H000-003, 2346H000-004, 2346H000-005 AND 2346H000-006 (2) Increase the pressure at the Return Inlet connection until the return bypass valve
opens. This is shown by a flow of more than 8 ml/min (0.002 US gpm) at the Return Outlet connection. The inlet pressure must be 621 to 759 kPag (90 to 110.1 psig) minimum. If the inlet pressure cannot be obtained, a shim (IPL Figure 1, item 745) can be installed on the Return Bypass Valve as shown in Figure 1002 (Refer to Figure 1002
“GRAPHIC-29-11-69-99B-808-A01”).
NOTE: The shim (IPL Figure 1, item 745) will increase the inlet pressure by 39,3 kPag (5.7 psig). The shim has layers of 0,076 mm (0.0029 in). The removal of a layer decreases the inlet pressure by 2,9 kPag (0.43 psig).
(3) Increase the pressure at the Return Inlet connection to get a flow of 68,1 l/min.
(18 US gpm). The pressure drop between the Return Inlet connection and the Return Outlet connection must not be more than 1551 kPad (225 psid).
(4) Slowly decrease the pressure until the return bypass valve closes. This is shown by a flow of less than 4 ml/min (0.001 US gpm) at the Return Outlet connection. The inlet pressure must be 448 kPag (65 psig) minimum.
(5) If necessary, decrease the pressure to 448 kPag (65 psig). Make sure that the leakage from the Return Outlet connection, in the third minute of a three minute test, is not more than 4 ml/min (0.001 US gpm).
(6) Decrease the pressure to zero. Remove the test equipment and install the return and case drain filter elements and bowls as given in ASSEMBLY.
SUBTASK-29-11-69-780-001-A01 C. Proof Pressure Test
(1) Connect the pressure supply to the EDP Pressure Inlet, ACMP Pressure Inlet and Ground Service Pressure connections.
(2) Connect the hand pump supply to the Reservoir Fill connection.
(3) Increase the pressure at the EDP Pressure Inlet, ACMP Pressure Inlet and Ground Service Pressure connections to 20685 kPag (3000 psig).
(4) Increase the pressure at the Reservoir Fill connection to 20685 kpag (3000 psig).
(5) Increase the pressure at the EDP Pressure Inlet, ACMP Pressure Inlet and Ground Service Pressure connections to 31028 kPag (4500 psig). Make sure that the pressure at the Reservoir Fill connection does not increase to more than 20685 kPag (3000 psig).
(6) Keep the pressures applied for 3 minutes then decrease the pressure at the EDP Pressure Inlet, ACMP Pressure Inlet and Ground Service Pressure connections to 20685 kpag (3000 psig).
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(7) Decrease the pressure at the Reservoir Fill connection to zero then decrease the pressure at the EDP Pressure Inlet, ACMP Pressure Inlet and Ground Service Pressure connections to zero.
(8) Visually examine the unit for external leakage and deformation. There must be no external leakage or deformation.
(9) Disconnect the pressure supply and hand pump supply.
(10) Connect the pressure supply to the Case Drain Inlet connection.
(11) Increase the pressure at the Case Drain Inlet connection to 3448 kPag (500 psig).
Keep the pressure applied for 3 minutes then decrease the pressure to zero.
(12) Visually examine the unit for external leakage and deformation. There must be no external leakage or deformation.
(13) Disconnect the test equipment from the unit.
SUBTASK-29-11-69-790-003-A01 D. System Pressure Relief Valve
(1) Connect the pressure supply to the Ground Service Pressure connection.
(2) Increase the pressure at the Ground Service Pressure connection until the flow at the Return Outlet connection increases to more than 20 ml/min (0.005 US gpm). The pressure must not be more than 24822 kPag (3600 psig).
(3) Increase the pressure at the Ground Service Pressure connection until the flow at the Return Outlet connection is 37,9 l/min (10 US gpm).
(4) Decrease the pressure to 20685 kPag (3000 psig). Make sure that the leakage from the Return Outlet connection, in the third minute of a three minute test, is not more than 4 ml/min (0.001 US gpm).
(5) Decrease the pressure to zero and remove the test equipment.
SUBTASK-29-11-69-780-002-A01 E. Pressure Switches
NOTE: These tests must be done on each pressure switch (500 and 590).
(1) Connect a drip spout to the Ground Service Pressure connection and bleed all pressure from the unit.
(2) Connect the pressure supply to the EDP Pressure Inlet and ACMP Pressure Inlet connections.
COMPONENT MAINTENANCE MANUAL
Part No. 2346H000-002, 2346H000-003, 2346H000-004, 2346H000-005 AND 2346H000-006 (3) With the system pressure at zero make sure there is continuity between pins 1 and 2
and pins 4 and 5. Also make sure there is no continuity between pins 2 and 3 and pins 5 and 6.
(4) Slowly increase pressure at the EDP Pressure Inlet and ACMP Pressure Inlet connections to 16548 kPag (2400 psig).
(5) Make sure there is continuity between pins 2 and 3 and pins 5 and 6. Also make sure there is no continuity between pins 1 and 2 and pins 4 and 5.
(6) Decrease the pressure to zero and bleed all pressure through the Ground Service Pressure connection.
(7) Disconnect the test equipment from the unit.
SUBTASK-29-11-69-750-001-A01 F. Pressure Transducer
(1) Connect the pressure supply to the Ground Service Pressure connection.
(2) Apply a voltage of 18 to 29 VDC to pins C and D of the pressure transducer.
(3) Apply a pressure of 20685 kPag (3000 psig) to the Ground Service Pressure connection.
(4) Use the voltmeter to measure the output across pins A and B of the pressure transducer. The voltage must be between 5.32 and 5.68 VDC.
(5) Decrease the pressure to zero and disconnect the test equipment.
SUBTASK-29-11-69-750-002-A01 G. Bonding
(1) Measure the bonding resistance between the manifold mounting lug and the points that follow with the ohmmeter set to a test current of 100 ± 20 mA. The resistance must not be more than 1 ohm for each test:
(a) EDP Pressure Inlet connection.
(b) ACMP Pressure Inlet connection.
(c) Pressure Outlet connection.
(d) Ground Service Pressure connection.
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(2) Measure the bonding resistance between the manifold mounting lug and the points that follow with the ohmmeter set to a test current of 100 ± 20 mA. The resistance must not be more than 5 milliohms for each test:
(a) Pressure Transducer connector shell.
(b) EDP Pressure Switch connector shell.
(c) ACMP Pressure Switch connector shell.
TASK-29-11-69-700-802-A01
5. Non-return Valve (2304H070) Test Procedure SUBTASK-29-11-69-99F-001-A01
A. General
(1) Do these tests on the non-return valve (540) at the conditions that follow:
(a) Ambient temperature: 23 ± 10°C (73.4 ± 18°F).
(b) Atmospheric pressure: 718 ± 57 mm Hg (28.25 ± 2.25 in Hg).
(c) Fluid temperature: 25 ± 5°C (77 ± 9°F).
(2) Install slave ‘O’ ring seals (560 and 580) and back-up rings (550 and 570) on the non-return valve (540) for these tests.
(3) If the results of a test are unsatisfactory, the non-return valve must be replaced.
SUBTASK-29-11-69-780-003-A01 B. Proof Pressure Test
(1) Connect the non-return valve to the test circuit shown in Figure 1003 (Refer to Figure 1003 “GRAPHIC-29-11-69-99B-806-A01”).
(2) Close all shut-off valves.
(3) Open shut-off valves B and D.
(4) Slowly increase the pressure to 31028 kPag (4500 psig). Keep the pressure applied for 3 minutes and make sure that there is no external leakage or damage caused to the non-return valve. Decrease the pressure to zero.
(5) Close all shut-off valves.
COMPONENT MAINTENANCE MANUAL
Part No. 2346H000-002, 2346H000-003, 2346H000-004, 2346H000-005 AND 2346H000-006 SUBTASK-29-11-69-780-004-A01
C. Pressure Drop Test
(1) Open shut-off valves A, B, D, G and H.
(2) Apply sufficient pressure to get a flow of 90,8 l/min (20 US gpm).
(3) Make sure that the pressure drop across the non-return valve is not more than 138 kPad (20 psid).
(4) Decrease the pressure to zero.
(5) Close all shut-off valves.
SUBTASK-29-11-69-790-004-A01 D. Leakage Test
(1) Open shut-off valves C and E.
(2) Increase the pressure to 34,5 kPag (5 psig), keep the pressure applied for 2 minutes then measure the leakage from the inlet port during the subsequent 1 minute. The leakage must not be more than 1 drop/minute.
(3) Increase the pressure to 20340 kPag (2950 psig), keep the pressure applied for 2 minutes then check for leakage during the subsequent 1 minute. There must be no leakage.
(4) Decrease the pressure to zero.
(5) Close all shut-off valves.
SUBTASK-29-11-69-780-005-A01 E. Cracking Test
(1) Open shut-off valves B, D and F.
(2) Slowly increase the pressure until the non-return valve opens. The non-return valve must open at a pressure of 13,8 to 55,2 kPag (2 to 8 psig).
(3) Decrease the pressure to zero.
(4) Close all shut-off valves.
(5) Disconnect the non-return valve from the test circuit.
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TASK-29-11-69-700-805-A01
6. Non-return Valve (2346H180) Test Procedure SUBTASK-29-11-69-99F-004-A01
A. General
(1) Do these tests on the non-return valve (540A) at the conditions that follow:
(a) Ambient temperature: 23 ± 10°C (73.4 ± 18°F).
(b) Atmospheric pressure: 692.5 ± 82.5 mm Hg (27.25 ± 3.25 in Hg).
(c) Fluid temperature: 25 ± 5°C (77 ± 9°F).
(2) Install slave ‘O’ ring seals (560A and 580A) and back-up rings (550A and 570A) on the non-return valve (540A) for these tests.
(3) If the results of a test are unsatisfactory, the non-return valve must be replaced.
SUBTASK-29-11-69-780-010-A01 B. Proof Pressure Test
(1) Connect the non-return valve to the test circuit shown in Figure 1004 (Refer to Figure 1004 “GRAPHIC-29-11-69-99B-809-A01”).
(2) Close all shut-off valves.
(3) Open shut-off valves B and D.
(4) Slowly increase the inlet pressure to 31028 kPag (4500 psig). Keep the pressure applied for 3 minutes and make sure that there is no external leakage or damage caused to the non-return valve. Decrease the pressure to zero.
(5) Close all shut-off valves.
SUBTASK-29-11-69-780-011-A01 C. Pressure Drop Test
(1) Open shut-off valves A, B, D, G and H.
(2) Apply sufficient pressure to get a flow of 68,2 l/min (18 US gpm) through the non-return valve.
(3) Make sure that the pressure drop across the non-return valve is not more than 207 kPad (30 psid).
COMPONENT MAINTENANCE MANUAL
Part No. 2346H000-002, 2346H000-003, 2346H000-004, 2346H000-005 AND 2346H000-006 (4) Decrease the pressure to zero.
(5) Close all shut-off valves.
SUBTASK-29-11-69-790-006-A01 D. Leakage Test
(1) Open shut-off valves C and E.
(2) Apply a pressure of 34,5 kPag (5 psig) to the outlet port. Keep the pressure applied for 2 minutes then measure the leakage from the inlet port during the subsequent 1 minute. The leakage must not be more than 1 drop/minute.
(3) Increase the pressure to 20340 kPag (2950 psig), keep the pressure applied for 2 minutes then check for leakage during the subsequent 1 minute. There must be no leakage.
(4) Decrease the pressure to zero.
(5) Close all shut-off valves.
SUBTASK-29-11-69-780-012-A01 E. Cracking Test
(1) Open shut-off valves B, D and F.
(2) Slowly increase the inlet pressure until the non-return valve opens. The non-return valve must open at a pressure of 13,8 to 55,2 kPag (2 to 8 psig).
(3) Decrease the pressure to zero.
(4) Close all shut-off valves.
(5) Disconnect the non-return valve from the test circuit.
TASK-29-11-69-700-803-A01 7. Check Valve Test Procedure SUBTASK-29-11-69-99F-002-A01
A. General
(1) Do these tests on the check valve (610) at a temperature of 32 ± 11°C (90 ± 20°F).
(2) If the results of a test are unsatisfactory, the check valve must be replaced.
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SUBTASK-29-11-69-780-006-A01 B. Proof Pressure Test
(1) Connect the pressure supply to the inlet and outlet connections of the check valve.
(2) Slowly increase the pressure to 31028 kPag (4500 psig). Keep the pressure applied for 1 minute and make sure that there is no external leakage or damage caused to the check valve. Decrease the pressure to zero.
(3) Disconnect the check valve from the test equipment.
(4) Manually operate the check valve to make sure that it moves correctly and smoothly.
SUBTASK-29-11-69-790-005-A01 C. Leakage Test
(1) Connect the pressure supply to the outlet connection of the check valve.
(2) Increase the pressure to 34,5 kPag (5 psig), keep the pressure applied for 2 minutes then measure the internal leakage during the subsequent 1 minute. The leakage must not be more than 1 drop/minute.
(3) Increase the pressure to 6895 kPag (1000 psig), keep the pressure applied for 2 minutes then do a check for internal leakage during the subsequent 1 minute. There must be no leakage. Decrease the pressure to zero.
(4) Increase the pressure to 20685 kPag (3000 psig), keep the pressure applied for 2 minutes then do a check for internal leakage during the subsequent 1 minute. There must be no leakage. Decrease the pressure to zero.
(5) Disconnect the check valve from the test equipment.
SUBTASK-29-11-69-780-007-A01 D. Cracking Pressure Test
(1) Connect the pressure supply to the inlet connection of the check valve.
(2) Connect a tee and a 0 to 100 kPag (0 to 10 psig) pressure gauge to the outlet connection.
(3) Slowly increase the pressure supply until there is a constant flow from the outlet connection. This shows that the valve has opened. The valve must open at a pressure of 517 to 690 kPag (75 to 100 psig).
(4) Decrease the pressure to zero and disconnect the check valve from the test equipment.
COMPONENT MAINTENANCE MANUAL
Part No. 2346H000-002, 2346H000-003, 2346H000-004, 2346H000-005 AND 2346H000-006 SUBTASK-29-11-69-710-001-A01
E. Flow Test
(1) Connect the pressure supply to the outlet connection of the check valve with piezometer tubes that are the same size as the valve connections. Connect a flowmeter downstream of the valve.
(2) Slowly increase the pressure until you get a flow rate of 22,71 l/min (6 US gpm). Make sure that the pressure drop across the valve is not more than 965 kpad (140 psid).
(3) Slowly increase the pressure until you get a flow rate of 37,85 l/min (10 US gpm). Make sure that the pressure drop across the valve is not more than 1034 kPad (150 psid).
(4) Decrease the pressure to zero and disconnect the check valve from the test equipment.
TASK-29-11-69-700-804-A01
8. Differential Pressure Indicator Test Procedure SUBTASK-29-11-69-99F-003-A01
A. General
(1) Do these tests on each differential pressure indicator (270, 340 and 410).
(2) Do these tests at ambient temperature and pressure, unless specified differently.
(3) If the results of a test are unsatisfactory, the differential pressure indicator must be replaced.
SUBTASK-29-11-69-780-008-A01 B. Proof Pressure Test
(1) Install the differential pressure indicator on the test fixture.
(2) Connect the pressure supply to the inlet and outlet connections of the test fixture.
(3) Slowly increase the pressure to 31028 to 31200 kPag (4500 to 4525 psig). Keep the pressure applied for 3 minutes then decrease the pressure to zero.
(4) Make sure that there is no external leakage or damage caused to the differential pressure indicator.
(5) Disconnect the pressure supply from the test fixture.
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SUBTASK-29-11-69-780-009-A01 C. Indicator Operation Test
(1) Connect the pressure supply to the inlet connection of the test fixture. Keep the outlet connection of the test fixture open to atmosphere.
(2) Decrease the temperature of the test fluid to 8.3 to 9.4°C (47 to 49°F) and let the temperature become stable.
(3) Increase the inlet pressure to 552 to 586 kPag (80 to 85 psig). Make sure that the indicator button does not come out.
(4) Decrease the pressure to zero.
(5) Increase the temperature of the test fluid to 27.2 to 30°C (81 to 86°F) and let the temperature become stable.
(6) Increase the inlet pressure to 379 to 407 kPag (55 to 59 psig). Make sure that the indicator button does not come out.
(7) Slowly increase the pressure to 552 kpag (80 psig) and make sure that the indicator button comes out at a pressure of 414 to 552 kPad (60 to 80 psid).
(8) Decrease the pressure to zero. Make sure that the indicator button stays out.
(9) Push the indicator button in then release it. The indicator button must stay in.
(10) Disconnect the differential pressure indicator from the test equipment.
TASK-29-11-69-810-801-A01 9. Fault Isolation
Fault isolation procedures are given in Table 1003 (Refer to Table 1003 “TABLE-29-11-69-99A-804-A01”).
TABLE-29-11-69-99A-804-A01 Fault Isolation—Table 1003
PROBLEM POSSIBLE CAUSE RECOMMENDED PROCEDURE