Refrigerant pressures vary greatly with temperature, that is the fundamental principal that makes refrigeration and air conditioning posible. Your question is too vague for a better answer. I am an HVAC service tech, and learning to interpret refrigerant pressures takes time to learn. If someone tells you you can add freon to a certain pressure, they are wrong, it is a combination of pressures and temperatures that have to be used to determine proper charge of refrigerant.
You can find the air conditioning ports on top of the air conditioning compressor. There will be a low pressure port and a high pressure port.
You can find the air conditioning low pressure charging port on top of the air conditioning compressor. The low pressure port will be on the right hand side of the air conditioning compressor.
The 1988 Jeep Cherokee air conditioning low pressure port is located on the air conditioning compressor. The low pressure port will be on the right hand side of the compressor.
in the UK the top of the range vw cars come with air conditioning as standard, but they have started installing air conditiong as standard on all of there cars
Your 2001 VW Jetta low pressure port can be found on the left side of the air conditioning compressor. The low pressure port is for recharging the air conditioning.
The low pressure connection for your 1993 Jeep Cherokee air conditioning system is located on the top of the air conditioning compressor. There is a low pressure connection and a high pressure connection, both should be labeled.
The 2004 Chevrolet Impala air conditioning pressure switch can be found on the end of the air conditioner compressor. The pressure switch should be labeled as such.
You can find the 1993 Mitsubishi air conditioning service port on top of the air conditioning compressor. The air conditioning service port will be labeled as the low pressure port.
Most air conditioning units have no reset button. If any do there would be no standard place for it.
You can recharge your 2005 Kia air conditioning system from the low pressure port. The low pressure port can be found on top of the air conditioner compressor.
The 1999 Ford Ranger low pressure air conditioning valve can be found on the air conditioning compressor. The low pressure valve will be labeled as the low pressure port.
You can add air conditioning refrigerant to your 2000 F1 50 pickup truck air conditioning system through the low pressure port. The low pressure port will be on the top of the air conditioning compressor.