There are ways of how to recharge air conditioner systems. The methods for this air conditioning maintenance are,refrigerant charging from high pressure side,refrigerant charging from low pressure side,and refrigerant charging using weight Here are some extra tips for you before venturing into how to recharge air conditioner.purpose of refrigerant charging is to add or remove, a specified amount of refrigerant from an air conditioning system, such that you will get comfort air from the air conditioner.contrary to popular belief, refrigerant do not require periodical charging. It is not a consumable item within an air conditioning unit, unless,there is a leak within the system,you have just changed an air conditioner part, ORyou are assembling a brand new air conditioner unitrefrigerant of 4xx series, e.g. R-404a are non azeotrope type refrigerants, EXCEPT for R-410.R-410 is a near azeotrope mixture.So, what’s the big deal between azeotrope and non azeotrope refrigerant?Azeotrope refrigerants consist of more than one blend of refrigerants, but it acts like a single refrigerant.

Non azeotrope refrigerants on the other hand, DO NOT act like a single refrigerant.The implication is that, the blends will be lost from the system at different proportions due to different boiling temperatures, whenever there is a leakage in the non azeotrope refrigerant.Hence, charging of non azeotrope refrigerant can only be carried out from zero to full. Never top up this type of refrigerant in case of leakage.Evacuate, and fill to adequate quantity.Azeotrope, or near azeotrope blends will act as a single refrigerant, and therefore, may be topped up in case of refrigerant leakagedo not overcharge as this will cause compressor damage,do not underchargecorrect problems within the system, if subcooling or superheat is inadequate, even if the pressure in the system has reached design statenever use open flame to heat up refrigerant cylinders. Use warm water insteadrecover the excess refrigerant into recovery cylinder, if the system is overchargedA little more before we go further into how to recharge air conditioner systems.

the amount of refrigerant superheat is about 10 oF (5.5 oC), or as per manufacturer’s recommendation, ORthe amount of refrigerant subcooling is about 10 oF (5.5 oC), or as per manufacturer’s recommendation, ORthe sight glass after (or on) the filter dryer is clear after charging.prices on ac unitsPresence of bubbles means that there is no adequate chargingIt’s about time we look into details of "How to Recharge Air Conditioner".commercial ac unit for sale How to recharge air conditioner style 1: From high side:ac unit taking long time cool This method is best used with capillary tube fitted systems.Other criteria that will require this technique are inadequate subcooling, and to top up refrigerant.First,stop the compressor,know the refrigerant in the system, and get the correct refrigerant to be charged,attach the refrigerant cylinder or canister to the centre manifold’s hose of the pressure gauge set,purge the line by throttling the plain gauge’s regulator, and the refrigerant cylinder’s regulator.

Don’t forget to close the regulators after purging,attach plain pressure gauge’s hose of the gauge set, to the liquid line service valve of the air conditioning unit.Make sure that the protective cap of the service valve is taken outopen the plain gauge’s regulator slightly,throttle the refrigerant cylinder’s regulator,close the cylinder’s regulator when the pressure in the high pressure side reaches the design operating pressure,operate the air conditioning unit,check the subcooling, and make sure that the is clear,stop the air conditioning unit if the subcooling is inadequate. Repeat steps (7) to (10) until the charging is adequateCourtesy for condenser picture: Bryant Air Conditioners How to recharge air conditioner style 2: From low side: This method is with thermostatic expansion valve fitted systems.Other criteria that will require this technique are inadequate superheat, and to top up refrigerant.First,stop the compressor,know the refrigerant in the system, and get the correct refrigerant to be charged,attach the refrigerant cylinder or canister to the centre manifold’s hose of the pressure gauge set,purge the line by throttling the compound gauge’s regulator, and the refrigerant cylinder’s regulator.

Don’t forget to close the regulators after purging,attach compound pressure gauge’s hose of the gauge set, to the suction service valve of the air conditioning unit.Make sure that the protective cap of the service valve is taken outopen the compound gauge’s regulator slightly,throttle the refrigerant cylinder’s regulator.The pressure within the system shall be less than the condensing pressure of the refrigerantoperate the air conditioning unit,close the cylinder’s regulator when the pressure in the low pressure side reaches the design operating pressure,the charge should be adequate once the design pressure on the low side is reached, but it is good to check the superheat, and make sure that the sight glass is clearCourtesy for condenser picture: Bryant Air Conditioners How to recharge air conditioner style 3: Using weight: This method is used to charge refrigerant to an evacuated, or newly assembled, and moisture removed air conditioning unit.The steps,stop the compressor,know the refrigerant to be handled by the system, and get the correct refrigerant to be charged,attach the refrigerant cylinder or canister to the centre manifold’s hose of the pressure gauge set,purge the line by throttling the compound gauge’s regulator, and the refrigerant cylinder’s regulator.

Make sure that the protective cap of the service valve is taken output the cylinder on weighing scale,ORget adequate number of refrigerant canisters to charge the system open the compound gauge’s regulator slightly,throttle the refrigerant cylinder’s regulator,operate the air conditioning unit,close the cylinder’s regulator when the correct amount of refrigerant is added to the systemcheck the superheat, operating pressure, and make sure that the is clearCourtesy for condenser picture: Bryant Air ConditionersThat’s about it on how to recharge air conditioner systems. Remember that a leak free system do not need regular refrigerant charging.Top of How to Recharge Air Conditioner page Back to Air Conditioning MaintenanceCharging points are primarily defined by the power (in kW) they can produce and therefore what speed they are capable of charging an EV.There are three main EV charging speeds: Slow charging (up to 3kW) which is best suited for 6-8 hours overnight Fast charging (7-22kW) which can fully recharge some models in 3-4 hours;

and Rapid charging units (43-50kW) which are able to provide an 80% charge in around 30 minutes. Rapid chargers also come in two charge point types – AC and DC – depending on whether they use alternating current or direct current.See below for a detailed description of the four main charge point types (Slow, Fast, Rapid AC and Rapid DC) with images of example units and the symbols that is used on Zap-Map Live.Slow charging is the most common method of charging electric vehicles. In most cases a standard single-phase 13 Amp three-pin plug is used to draw up to 3kW of power – with a full charge typically taking 6 to 8 hours. While the first wave of publicly accessible on-street chargers were of this type, these are now being replaced by Fast and Rapid units.Nearly all electric models can be slow charged with each vehicles being supplied with a charging cable with the appropriate connectors and cable – in most cases a standard 3-pin plug at the charging point outlet, and either a gun shaped Type 1 (J1772) or 7-pin Type 2 (Mennekes) connector for coupling with the vehicle inlet – see Know Your Connectors below.

Home or workplace overnight charging is the most common type of charging cycle. Although a standard single-phase 13 amp three-pin domestic socket is adequate for home charging, a dedicated EV unit should be installed. Alternatively, a qualified electrician should conduct a house survey to ensure that the wiring will safety support the relatively long periods of charging.Fast charging reduces EV charge times to around half that of a slow charge by doubling the available current to 32 amps (7kW) – the time for a full charge typically taking 3 to 4 hours. Most commercial and a many public on-street chargers already use this technology. It is likely that this charge rate will become increasingly used to replace public Slow charging points across the UK.While less common, Fast 3-phase charging is also technically possible, each phase delivering approximately 7kW to deliver a total of 22kW. However, this is mainly reserved for electric trucks and buses which need high power chargers to replenish their large battery packs.

While not all electric cars and vans are able to accept a 1-phase Fast charge at 32 amps (7kW), most can be connected to them (with the right connector) and will draw either 13 or 32 amps depending on their capability. While Type 1 (J1772) connectors were initially the most common type used at the charger end, these are steadily being replaced by the more versatile Type 2 (Mennekes) connector – see Know Your Connectors below.Rapid AC chargers provide a high power alternating current (AC) supply with power ratings up to 43kW. At this level of power, an electric vehicle can typically be charged to 80% in less than half an hour.The Rapid AC option is a relatively new development and only available on one or two EV models in the UK – more common is the Rapid DC option described below. Due to their high power, Rapid AC units are equipped with a tethered cable with a non-removable Type 2 (Mennekes) connector – see Know Your Connectors below.Rapid DC chargers provide a high power direct current (DC) supply with power ratings of up to 50kW.

At these charging rates, charging an electric vehicle to 80% typically takes half an hour.The most common type of Rapid charging unit, Rapid DC chargers are equipped with a tethered cable with a non-removable connector which is coupled with an appropriate inlet socket which is fitted to some but certainly not all EV models. Rapid DC chargers are fitted with either a JEVS (CHAdeMO) or a 9-pin CCS (Combo) connector – see Know Your Connectors below.Connecting an electric vehicle to an EV charger requires a cable fitted with connectors to match the charger outlet socket and the vehicle inlet socket. Most cables have a connector at each end (to couple with the charger outlet and vehicle inlet) or are tethered, which means that the cable is permanently attached to the charging unit.The choice of connector is determined by whether an EV is charged using AC (alternating current) or DC (direct current), the charging speed (kW power) and the safety protocol employed. Having different countries of origin, the make and model will also determine which connector are used.