Refrigerant gauge manifold sets are used whether an AC has a leak.
Refrigerant gauge manifold sets are used to catechism cooling systems, such as air conditioners, charged with individual types of coolant (refrigerant), by reading the size of impact inside the process. A place of two gauges are attached to the top of a manifold (a channel with access ports) with a allot of three hose and two containment valves. The hoses, gauges and valves are all colour coded; the high-reaching vigour side is cerise and low force side is downcast. There is further a pusillanimous hose used to add refrigerant whether bottom line. On the contrary, due to environmental laws, adding refrigerant should one shot be done by efficient technicians.
Instructions
1. Fix the thermostat of the AC unit to a low Sufficiently temperature so the unit Testament flight continually during the check.
2. Hang the S-hook of the test gauge manifold meeting over the top of the AC unit. Brisk both the big (brick) and low (gloomy) side power valves on the manifold by turning the knobs clockwise.
3. Establish the AC unit's low and giant power investigation ports. These Testament resemble tire valves attached to a tube, with the low coercion Harbour generally on the equitable side of the AC unit. Verify with the unit's overhaul guide whether there is any query.
4. Unscrew the valve caps from the test ports. Unscrew the blue low pressure hose from the front of the test gauge's manifold and screw it onto the AC unit's low pressure test port. Unscrew the red high pressure hose from the front of the test gauge's manifold and screw it onto the AC unit's high pressure test port.
5. Open the blue low pressure valve and then the red high pressure valve on the test gauge's manifold, bleeding only the air from the hoses. Close the valves as soon as refrigerant appears. Take the readings on the gauges and compare to the readings specified in the AC unit's service manual.
6. Unscrew the red high pressure hose from the AC unit. Remove the blue hose from the AC unit. Reinstall the valve caps on the AC units test ports.7. Open the red high pressure valve on the test gauge's manifold and then the blue, transferring the pressure from in the high pressure side of the manifold to the low pressure side. This will allow the refrigerant to be returned (sucked) back into the AC unit. Close the red valve and then the blue.
Call a licensed service repair facility if the test shows the system to be low on coolant as Federal Law provides severe penalties if refrigerant is not properly handled.
