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Job Description:

  • 1) Fills thermostat bellows with gas or liquid to charge bellows, using vacuum tank or cabinet, crimping equipment, brazing iron, and solder seal equipment, by either of following methods: Inserts capillary tube of bellows into charging manifold of cabinet and closes cabinet windows to seal cabinet.

  • 2) Manipulates controls of cabinet to purge capillary tubes of air and fill tubes with gas.

  • 3) Observes gauges to verify that internal temperature of cabinet meets specifications, and turns valve to maintain specified gas pressure in bellows.

  • 4) Positions bellows assemblies into vacuum tank with bulb end down.

  • 5) Closes tank lids, tightens lugs to seal tank, and opens valves to create vacuum in tank.

  • 6) Turns valve on vacuum tank and connection line between vacuum tank and filling tank to draw liquid into tank and force liquid into bellows.

  • 7) Removes bellows from tank or cabinet and crimps bulb end of capillary tube to seal in gas or liquid fill, using crimping equipment.

  • 8) Brazes crimped end of tube, using brazing iron or solder seal equipment.

  • 9) Submerges portion of capillary tube in water, when filling tube with combination of liquid and gas, to partially condense gas.

  • 10) Places filled bellows in tray or storage boxes.




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End Of Job Description for: "BELLOWS FILLER"
DOT:   710.684-014

Job Number: 720