Airwell AWPO-MAF009-C11, Руководство по обслуживанию

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BASIC TEST PROCEDURE
Portable MAF 24 Version - 0
11. Vacuum Gauge - (0 - 1000 microns)
10.2.2 Equipment must be capable of:
1. Recovery CFC's as low as 5%.
2. Evacuation from both the high side and low side of the system simultaneously.
3. Introducing refrigerant charge into high side of the system.
4. Accurately weighing the refrigerant charge actually introduced into the system.
5. Facilities for flowing nitrogen through refrigeration tubing during all brazing processes.
10.2.3 Hermetic compressor replacement.
The following procedure applies when replacing components in the sealed refrigeration
circuit or repairing refrigerant leaks. (Include Compressor, condenser, evaporator, capillary
tube,
refrigerant leaks, etc.)
1. Recover the refrigerant from the system at the process tube located on the high side of
the system by installing a line tap on the process tube. Apply gauge from process tube to
EPA approved gauges from process tube to EPA approved recovery system. Recover
CFCs in system to at least 5%.
2. Cut the process tube below pinch off on the suction side of the compressor.
3. Connect the line from the nitrogen tank to the suction process tube.
4. Drift dry nitrogen through the system and unsolder the more distant connection first.
(Filter drier, high side process tube, etc.)
5. Replace inoperative component, and always install a new filter drier. Drift dry nitrogen
through the system when making these connections.
6. Pressurize system to 30 PSIG with proper refrigerant and boost refrigerant pressure to
150 PSIG with dry nitrogen.
7. Leak test complete system with electric halogen leak detector, correcting any leaks found.
8. Reduce the system to zero gauge pressure.
9. Connect vacuum pump to high side and low side of system with deep vacuum hoses or
copper tubing. (Do not use regular hoses.)