AUX air conditioner service manual
Chapter 6 introduction to the regular service tools for air-conditioner
The regular service tool and application
1. Vacuum Pump
Vacuum pump is a device used in vacuumize for the mini type refrigerating equipment. The common
vacuum pump in practice is the revolving blade type. The exterior structure and the working theory are
indicated as the below pictures:
1： air intake 2： oil tank 3： air discharge 4：fan and coupling entry 5： supporting base
6： electrical motor 7： gas ballast valve 8： oil filler plug 9： oil mark 10： oil drain plug
Picture 6-1: The exterior structure of vacuum pump
1： air intake 2： filter 3：oil filler plug 4：oil mark 5：oil drain plug 6： rotary blade
7：spring 8： rotor 9：gas ballast valve 10： Cylinder 11：exhaust valve 12： air vent Picture
Picture 6-2: Single-stage rotary Vacuum pump
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