AccuTools eL-520 Руководство пользователя - Страница 7

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SAE J1628 RECOMMENDED PROCEDURES

For the purpose of Automotive A/C Testing with respect to the

SAE J1627 standard, the following leak testing procedure

applies:

1. Operate the eL-520 in high sensitivity mode.

2. Leak test with the engine not in operation.

3. The air conditioning system shall be charged with sufficient

refrigerant to have a gauge pressure of at least 340 kPa

when not in operation. At temperatures below 15°C, leaks

may not be measurable, since this pressure may not be

reached.

4. Take care not to contaminate the detector probe tip. If the

part is particularly dirty, it should be wiped off with a dry shop

towel or blown off with shop air. No cleaners or solvents shall

be used, since many electronic detectors are sensitive to

their ingredients.

5. Visually trace the entire refrigerant system, and look for

signs of air-conditioning lubricant leakage, damage, and

corrosion on all lines, hoses, and components. Each

questionable area shall be carefully checked with the

detector probe, as well as all fittings, hose to line couplings,

refrigerant controls, service ports with caps in place, brazed

or welded areas, and areas around attachment points and

hold-downs on lines and components.

6. Always follow the refrigerant system around in a continuous

path so that no areas of potential leaks are missed. If a leak

is found, always continue to test the remainder of the

system.

eL-520 User's Guide