What color of the refrigerant hose attach to the vacuum pump?
DO NOT VENT REFRIGERANT TO THE ATMOSPHERE, USE APPROPRIATE RECOVERY EQUIPMENT. Connect the BLUE hose to the low side service port. Connect the RED hose to the high side service port. Connect the YELLOW hose to a vacuum pump.
How do you connect vacuum pump gauges?
Attach your gauges to the ports. The blue gauge and hose should connect to the low-pressure service port. The red gauge and hose will connect to the high-pressure port. The yellow hose in the middle should connect your gauges to your vacuum. Make sure the gauges and gauge hoses are connected tightly.
Is 1000 microns a good vacuum?
ASHRAE recommends evacuation to below 1000 microns for moisture removal and below 500 microns after replacing a compressor. A high quality vacuum pump will be able to take you down to 200-500 microns. With the system almost completely free from water vapor, you are ready to put the refrigerant back in the system.
What happens when the low side hand wheel is turned open slightly?
What happens when the low side hand wheel is turned open slightly? A partially open path around the valve and valve seat is opened from the low side to the center hose.
What would happen if a leaking gauge manifold were used while trying to evacuate a system to a deep vacuum?
While the micron gauge is quite capable, testing for a leak in a vacuum is not acceptable practice over a standing pressure test as moisture is drawn into the system during the evacuation process. If the system has a leak the vacuum gauge will continue to rise until atmospheric pressure has been reached.
What do you need to hook up a vacuum pump?
Attach your gauges to the ports. You will need a gauge set that connects to both your vacuum and your pressure ports on your AC system. The blue gauge and hose should connect to the low-pressure service port. The red gauge and hose will connect to the high-pressure port. The yellow hose in the middle should connect your gauges to your vacuum.
How does a vacuum pump connect to the AC system?
You will need a gauge set that connects to both your vacuum and your pressure ports on your AC system. The blue gauge and hose should connect to the low-pressure service port. The red gauge and hose will connect to the high-pressure port. The yellow hose in the middle should connect your gauges to your vacuum.
Where does the high pressure hose go on a vacuum?
The blue gauge and hose should connect to the low-pressure service port. The red gauge and hose will connect to the high-pressure port. The yellow hose in the middle should connect your gauges to your vacuum. In your car, your high-pressure port will generally be physically higher than the low-pressure port.
How do you connect the vacuum pump to the manifold?
Connect the vacuum pump’s hose to the low pressure port present on the manifold gauge. (Source: smartguy) Next, you need to connect the red colored valve to the high pressure port and the blue colored valve to the lower one. It is the yellow valve that signifies the connection to the vacuum pump.