A charge-verification system for a circuit including a condenser having an inlet, an outlet, and a coil circuit tube extending between the inlet and the outlet is provided. The charge-verification system may include a first of coil temperature sensor located on the coil circuit tube a first distance from the inlet and a second of coil temperature sensor located on the coil circuit tube a second distance from the inlet. The charge-verification system may also include a controller receiving a first signal from the first temperature sensor indicative of a first temperature and a second signal from the second temperature sensor indicative of a second temperature. The controller may determine which of the first signal and the second signal is closer to an actual saturated condensing temperature of the condenser.

A refrigerant recovery/loading manifold for air-conditioning equipment has a manifold body and valves for opening and closing a passage inside the manifold body, the passages including a high-pressure-side passage, a low-pressure-side passage, a recovery-side passage, a vacuum-suction-side passage, a purging passage, and a common passage via which these passages communicate, at least a high-pressure-side valve being provided to the high-pressure-side valve being provided to the high-pressure-side passage, and at least a low-pressure-side valve being provided to the low-pressure-side passage; wherein a high-pressure connection means is provided to the low-pressure-side passage, the high-pressure connection means having a valve mechanism and being able to connect with a high-pressure-side quick joint.

A refrigerant recovery/loading manifold for air-conditioning equipment has a manifold body and valves for opening and closing a passage inside the manifold body, the passages including a high-pressure-side passage, a low-pressure-side passage, a recovery-side passage, a vacuum-suction-side passage, a purging passage, and a common passage via which these passages communicate, at least a high-pressure-side valve being provided to the high-pressure-side valve being provided to the high-pressure-side passage, and at least a low-pressure-side valve being provided to the low-pressure-side passage; wherein a high-pressure connection means is provided to the low-pressure-side passage, the high-pressure connection means having a valve mechanism and being able to connect with a high-pressure-side quick joint.

The present disclosure relates to apparatuses and methods for multi-phase vacuum-assisted recovery of refrigerant from a vehicle. One apparatus for multi-phase vacuum-assisted recovery of refrigerant from a vehicle includes a compressor that removes refrigerant from the vehicle during a first phase and a second phase of a recovery process. The apparatus also includes one or more pressure sensitive devices that are each configured to measure a first pressure and/or a second pressure in the apparatus. Upon the first pressure being less than a first threshold pressure, a vacuum pump that is fluidly connected in series with the compressor assists the compressor in the removal of refrigerant from the vehicle during a second stage of the recovery process. Also, upon the second pressure being less than a second threshold pressure, the vacuum pump ceases assisting the compressor.

The present disclosure relates to apparatuses and methods for multi-phase vacuum-assisted recovery of refrigerant from a vehicle. One apparatus for multi-phase vacuum-assisted recovery of refrigerant from a vehicle includes a compressor that removes refrigerant from the vehicle during a first phase and a second phase of a recovery process. The apparatus also includes one or more pressure sensitive devices that are each configured to measure a first pressure and/or a second pressure in the apparatus. Upon the first pressure being less than a first threshold pressure, a vacuum pump that is fluidly connected in series with the compressor assists the compressor in the removal of refrigerant from the vehicle during a second stage of the recovery process. Also, upon the second pressure being less than a second threshold pressure, the vacuum pump ceases assisting the compressor.

The refrigeration cycle apparatus includes: liquid-side connection piping that extends from liquid-side refrigerant piping; gas-side connection piping that extends from gas-side refrigerant piping; a refrigerant storage tank that stores refrigerant, an intake side thereof being connected to the liquid-side connection piping, and a discharge side thereof being connected to the gas-side connection piping; an inlet-side electromagnetic valve that is disposed on the liquid-side connection piping, and that is opened when there is no passage of electric current; an inlet-side check valve that is disposed on the liquid-side connection piping, and that allows the refrigerant to flow only toward the refrigerant storage tank; and a valve apparatus that is disposed on the gas-side connection piping, that is opened during passage of electric current to the inlet-side electromagnetic valve, and that is delayed before being shut off after passage of electric current to the inlet-side electromagnetic valve is stopped.

A device for charging a primary fluid system, such as an air-conditioning or cooling system, closed and at a first pressure (P1), with a secondary fluid, comprises a dispensing cylinder of the secondary fluid, said cylinder containing the secondary fluid and a propellant fluid having a second pressure (P2) greater than said first pressure. Said cylinder further comprising a filler valve operable to allow/block the exit at least of the secondary fluid from the cylinder. A connection hood is partially superposed over the dispensing cylinder, fitted with connections means suitable for fluidically connecting said filler valve directly to said primary fluid system or to a connection pipe to said system.

A device for charging a primary fluid system, such as an air-conditioning or cooling system, closed and at a first pressure (P1), with a secondary fluid, comprises a dispensing cylinder of the secondary fluid, said cylinder containing the secondary fluid and a propellant fluid having a second pressure (P2) greater than said first pressure. Said cylinder further comprising a filler valve operable to allow/block the exit at least of the secondary fluid from the cylinder. A connection hood is partially superposed over the dispensing cylinder, fitted with connections means suitable for fluidically connecting said filler valve directly to said primary fluid system or to a connection pipe to said system.

A cooling device management system is connected to a cooling device that carries out refrigerant leakage detection mode to detect leaks of refrigerant. The cooling management system includes a transmission section that transmits instructions to the cooling device, a reception section that receives information from the cooling device, a refrigerant leakage detection schedule setting section that receives inputting of settings of a refrigerant leakage detection schedule in order to carry out the refrigerant leakage detection mode in the cooling device, a schedule executing section, and a display section. The schedule executing section transmits instructions to carry out the refrigerant leakage detection mode from the transmission section to the cooling device based on the refrigerant leakage detection schedule which is received using the refrigerant leakage detection schedule setting section. The display section outputs results of the refrigerant leakage detection mode based on the information received from the cooling device.

An outdoor unit includes an indication cover including a cover portion on which at least one of a type of refrigerant employed and a caution are marked, the cover portion being disposed so as to cover a hexagonal column-shaped outer circumference of a sealing hexagon nut, a ring portion attached to a gas-side valve which is the refrigerant pipe connection valve, and a joint portion formed so as to be bendable and connecting between the cover portion and the ring portion.