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L-852A-D, J & K ITCF, F-Range, ICAO LED Taxiway Centerline Light

96A0460 Rev. C

Maintenance

2.4.3 Testing for Leaks Always test for leaks after opening the fixture for any reason. To perform this test:

1. Remove pressure release screw, shown at right.

2. Screw the pressure test fitting hand-tight into the pressure relief port (see figure below).

The relief port is the opening created when the pressure release screw is removed.

3. Attach an air line to the lock hose plug sleeve, shown below.

4. Pressurize to 20 psi (137.89 kPa).

5. Submerge the fixture in a bucket or tank filled with water. Check for air bubbles, which

would indicate a leak.

6. Locate the leak source, depressurize, replace the leaky seal or part, reassemble and

repeat the test.

7. If the leak is fixed, depressurize and reinstall the pressure release screw.

Pressure

release

screw

P/N 44A6104 (may be

purchased separately from

ADB Airfield Solutions)

Pressure

test fitting

Lock hose

plug sleeve

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ADB L-852D Specifications

General