1 00:00:09,208 --> 00:00:11,541 Right, okay, so following on, we've hooked the machine up. 2 00:00:11,791 --> 00:00:14,875 We've checked our connections, we haven't opened the taps on the machine yet. 3 00:00:15,208 --> 00:00:19,083 So now we're on this screen on the actual console itself. 4 00:00:19,291 --> 00:00:21,458 It's now going to ask me to choose which gas it is. 5 00:00:21,625 --> 00:00:23,541 We know it's 134a. 6 00:00:23,541 --> 00:00:27,125 So I can press the button, which does work even with the gauntlets on, which is good. 7 00:00:27,125 --> 00:00:29,208 So it's now given me a display screen. 8 00:00:29,208 --> 00:00:32,458 So the first thing we're looking is to see how much gas is in the machine, 9 00:00:33,416 --> 00:00:36,958 if there's not enough, we need to change 10 00:00:36,958 --> 00:00:40,208 the setup on the machine to make sure we've got enough gas. 11 00:00:40,541 --> 00:00:44,791 OK, the machine's checked itself, knows there's enough gas in there so we can now proceed on. 12 00:00:45,125 --> 00:00:50,291 So if we go on to an automatic setting, then the machine will run through a series of steps for us. 13 00:00:51,041 --> 00:00:54,416 OK, so it's now telling us whether we need dye, 14 00:00:54,416 --> 00:00:57,833 whether we actually need to add anything to the system. 15 00:00:57,833 --> 00:01:00,500 It's doing the self-test on the bottles on the side of the machine. 16 00:01:01,041 --> 00:01:05,833 OK, so if we look closely, we can see that it's telling us we need oil. 17 00:01:06,166 --> 00:01:08,625 Now the refrigerant system runs with gas. 18 00:01:09,208 --> 00:01:13,541 It also has oil in it and the job of that oil, it's called PAG oil, P.A.G. 19 00:01:14,500 --> 00:01:17,500 What the oil does is it lubricates the compressor in the system. 20 00:01:17,750 --> 00:01:23,166 OK, so some places when they do refrigerant replacement, don't put the oil in to save money. 21 00:01:23,500 --> 00:01:26,666 Unfortunately, what it does do is it will damage the compressor over time. 22 00:01:27,208 --> 00:01:29,666 Generally, what happens is customer has a gas recharge. 23 00:01:30,000 --> 00:01:33,000 After a few weeks, the compressor itself begins to fail. 24 00:01:33,291 --> 00:01:38,208 And the only cure for that is to de-gas a system, remove the compressor and find out what components are damaged. 25 00:01:38,875 --> 00:01:41,125 If it's repairable, we can repair the system. 26 00:01:41,125 --> 00:01:44,541 If it's unrepairable, then unfortunately we're going to need a new compressor. 27 00:01:44,791 --> 00:01:49,916 So this oil is vital to the amount of life you get out of your system. 28 00:01:49,916 --> 00:01:52,916 So the more oil we put in it, the better the compressor works. 29 00:01:53,875 --> 00:01:56,750 OK, so the system has checked it's OK. 30 00:01:57,000 --> 00:02:01,125 It's not a hybrid vehicle, so we don't need to go through that system so we can press back. 31 00:02:02,208 --> 00:02:04,791 And that should now take us back to the original screen. 32 00:02:05,416 --> 00:02:07,833 OK, so we can go on to the manual set up. 33 00:02:11,333 --> 00:02:14,833 So the manual procedure, then we've got recovery and recycle of gas. 34 00:02:14,833 --> 00:02:20,250 So now every time we do this system, this machine will want to recover the gas from the system 35 00:02:20,666 --> 00:02:24,916 and then filter it out, and then we can start the test with an empty system. 36 00:02:25,333 --> 00:02:28,416 If we want to test this system for a leak, we've got two options. 37 00:02:29,000 --> 00:02:33,833 Now, one of the options is U.V. dye, which is on the bottom right hand side of this picture. 38 00:02:34,625 --> 00:02:37,458 We inject a dye into the system when we put the gas and oil in. 39 00:02:37,750 --> 00:02:43,583 And this then allows us to use UV lighting and goggles, and we can actually pick up any leaks from the system. 40 00:02:43,583 --> 00:02:45,666 Shows up bright green, glowing in the dark. 41 00:02:46,500 --> 00:02:49,833 OK, this system is more reliable than trying to leak 42 00:02:49,833 --> 00:02:53,666 test it with a system that just senses for the gas escaping. 43 00:02:54,000 --> 00:02:56,958 The only downside is if we disconnect the system incorrectly. 44 00:02:57,500 --> 00:03:00,250 If it sprays any gas anywhere, it'll spray 45 00:03:00,250 --> 00:03:03,166 the dye all over the place as well, and we're going to struggle to find a leak. 46 00:03:03,416 --> 00:03:05,500 OK, so this is why we need to follow the procedure. 47 00:03:05,750 --> 00:03:09,958 So UV dye, it's in the bottles on the side and we can inject a small amount into the system, 48 00:03:10,125 --> 00:03:13,250 doesn't damage it, and it just circulates inside the system. 49 00:03:13,250 --> 00:03:15,833 And if there's any leaks, then we can find them externally. 50 00:03:16,458 --> 00:03:20,125 OK, so if we go into the recovery cycle button, we can press that 51 00:03:20,500 --> 00:03:23,208 it's now going to ask me for the vehicle registration number. 52 00:03:23,791 --> 00:03:26,291 So for the timing of this video, 53 00:03:26,291 --> 00:03:29,916 what I'm going to do is just put the number one in and then we can then carry on. 54 00:03:29,916 --> 00:03:32,500 For a customer's vehicle because we can get a print out. 55 00:03:32,875 --> 00:03:38,875 Then we can put the vehicle registration number in and then we can give them a printout with how much gas 56 00:03:38,875 --> 00:03:44,625 is in their vehicle, how much gas we put back in and to justify the invoice on the end of it. OK. 57 00:03:44,625 --> 00:03:48,000 So for the purposes of this, I'm just going to put one in press, OK? 58 00:03:49,791 --> 00:03:54,666 So it's now telling me to connect the pipes, we've done that already, so we can just double check. 59 00:03:55,041 --> 00:03:58,125 OK, so it says connect high and low pressure 60 00:03:58,125 --> 00:04:01,875 side couplings and press, OK, so we know our connections are good. 61 00:04:02,250 --> 00:04:03,666 We've double checked them. 62 00:04:03,666 --> 00:04:09,125 So it's also telling me that to turn the dials now we haven't done that, we fitted them in the open position. 63 00:04:09,333 --> 00:04:11,416 So I'm just going to turn those in now. 64 00:04:14,958 --> 00:04:17,125 Again, just checking our connection. 65 00:04:20,083 --> 00:04:23,833 So we just turned that in by hand again, when we turn it, we'll hear a slight 66 00:04:23,833 --> 00:04:27,291 hiss as the system pressures release, that's fine because the pipes are on. 67 00:04:27,708 --> 00:04:30,750 We're wearing PPE, so we're not in any issues there. 68 00:04:31,083 --> 00:04:34,250 So now if we come back to the machine, we can now see that 69 00:04:34,250 --> 00:04:37,458 this dial the low pressure side has already gone up. 70 00:04:37,708 --> 00:04:40,416 OK, the engines off, system's not running. 71 00:04:40,625 --> 00:04:42,791 So that means we've got pressure in the system. 72 00:04:42,791 --> 00:04:44,791 So that's our initial check. OK. 73 00:04:44,958 --> 00:04:48,750 If that was reading zero, I'd suspect then we have no gas in the system 74 00:04:49,000 --> 00:04:52,625 and then we could go and diagnose that fault before we check for anything else. 75 00:04:53,000 --> 00:04:58,000 If that reading is zero, I would suggest a physical check of the pipes condense 76 00:04:58,000 --> 00:05:01,083 some of the system components to see if there's any obvious damage 77 00:05:01,083 --> 00:05:03,333 or leaks before you proceed any further. 78 00:05:04,125 --> 00:05:05,666 OK, so we know that's OK. 79 00:05:05,666 --> 00:05:09,291 We've got system pressure so we can now press okay on the console 80 00:05:09,916 --> 00:05:12,541 and now we hear the machine start up and it's 81 00:05:12,541 --> 00:05:15,083 now going to run through the evacuation procedure. 82 00:05:15,833 --> 00:05:20,750 OK, we've got a service alarm on here, so that is telling us to replace the dryer filter 83 00:05:20,750 --> 00:05:24,791 and the oil in the pump before we continue carrying on with this job. 84 00:05:26,083 --> 00:05:26,875 Right, OK, so 85 00:05:26,875 --> 00:05:29,791 we've sorted we've serviced our machine, we service the dryer. 86 00:05:30,125 --> 00:05:33,291 We've kind of replenished the oil in the machine, so now we can carry on. 87 00:05:33,916 --> 00:05:35,083 I've started the procedure. 88 00:05:35,083 --> 00:05:37,750 I've now interrupted it so we can restart it on the video. 89 00:05:37,750 --> 00:05:41,666 So if I press, OK, I don't need my goggles or gloves for this section, 90 00:05:42,250 --> 00:05:45,333 we can now see the machine is recovering gas on the top reading. 91 00:05:45,666 --> 00:05:47,666 We can see the bottle pressure in the machine. 92 00:05:48,083 --> 00:05:49,333 We need to keep an eye on this. 93 00:05:49,333 --> 00:05:52,083 If the temperature drops really low in your workshop, 94 00:05:52,458 --> 00:05:56,333 then sometimes it can cause issues with withdrawing the gas purely because of it. 95 00:05:56,333 --> 00:06:01,750 A lot of modern machines now have got a bottle heater fitted to allow the gas to flow more freely. 96 00:06:02,458 --> 00:06:07,000 OK, so we've got AC system pressure that's running at 2.6 bar at the moment. 97 00:06:07,000 --> 00:06:09,875 So that's 15 PSI for one bar, 98 00:06:10,500 --> 00:06:13,375 OK, and the bottle temperature is 12.9 degrees. 99 00:06:13,375 --> 00:06:15,333 So that's on the bottle, on the machine. 100 00:06:15,333 --> 00:06:18,333 OK, so that's acceptable. Machine's now recovering the gas. 101 00:06:18,708 --> 00:06:21,416 So it says gas extraction from AC system, 102 00:06:21,416 --> 00:06:24,500 first phase: recovery recycling at the bottom. 103 00:06:24,500 --> 00:06:29,250 So now we can leave this machine to kind of do its job and evacuate the system. 104 00:06:29,750 --> 00:06:33,250 What we're looking for is the total amount recovered. OK? 105 00:06:33,416 --> 00:06:37,583 For example, if your system is running on 600 grams and we recover 200, 106 00:06:38,000 --> 00:06:40,750 the system will run, but the operation will be poor. 107 00:06:41,458 --> 00:06:44,541 And that's generally what happens, as we alluded to earlier. 108 00:06:44,875 --> 00:06:48,333 There is kind of general kind of seepage in the system over time. 109 00:06:48,875 --> 00:06:51,000 It's a gas. It does. 110 00:06:51,000 --> 00:06:54,208 It does kind of degrade over time, so customers may complain 111 00:06:54,208 --> 00:06:56,958 that the air conditioning is poor compared to another vehicle. 112 00:06:57,375 --> 00:07:01,166 So this recovered gas amount is crucial to how the system works. 113 00:07:01,375 --> 00:07:04,833 If it's half full, it's only going to be half as efficient as it should be. 114 00:07:05,666 --> 00:07:08,750 OK, so what we can do is we can leave this part of the system running now, 115 00:07:09,083 --> 00:07:13,500 and recovery will carry on until the system is completely empty of gas 116 00:07:13,791 --> 00:07:17,250 and then the machine will filter the gas and then we'll move on to the next step.