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I’m not sure about the body camera thing. I imagine the rules for video recording in customers homes are very stringent. If you don’t comply, very likely the footage would be inadmissable as evidence. As a minimum you need to register with the ICO (even a dashcam used in a business vehicle requires this), and likely need to display warning notices. Customers would be within their rights to demand a copy of your footage.
I don’t think there is any value in studying the fill time on my Miele. I think it may be worth exploring whether you have any means of increasing the flow rate into your machine, perhaps by checking the inlet filter or renewing the water supply tap.
Well, I think it shows the pressure sensor is able to read water level correctly. The criteria used to determine fill level in each program and program phase would be determined by the machine’s software, something which none of us have access to.
The advantage of a pressure sensor over a pressure switch is that it allows the development engineers to vary behaviour of the machine according to a variety of factors, not just water level, in order to achieve an optimum balance between cleaning performance and program duration.
This type of more flexible programming when it started to appear in high end machines in the 1980s and 90s was often referred to as fuzzy logic, but is now commonplace. In addition, modern appliances are sometimes capable of machine learning, enabling them to memorise observed parameters over several wash cycles and adapt programs accordingly.
I suspect the quirks you have identified on your more recent machine, rather than pointing to a specific fault, may be a byproduct of these more adaptable technologies.
That’s good to know. The extra rinse is likely a deeper water level, to ensure reliable application of fabric conditioner or other fabric treatments. I think this conforms the water level control is working as intended by the manufacturer.
The point I was tying to make is that adequate water pressure does not necessarily give adequate flow. 7 litres a minute seems a poor flow rate. Your machine may be programmed to limit the fill time if flow rate is poor. This would be determined by the software.
John.G wrote:You should get ~ 10{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} increase in flow at 3 bar vs 2.5 bar
This is too simplistic as flow doesn’t just depend on static water pressure. Pressure is defined as force per unit area, so flow rate will be broadly proportional to pressure and cross sectional area of the supply pipework at its narrowest point. Resistance due to sharp bends and long pipe runs will also have an effect.
The 27 second fill time on my Miele delivered around 6.5 litres.
It is not unusual for older washing machine supply taps to restrict flow rate due to corrosion and/or limescale. Static pressure will measure the same, but flow rate will reduce. I wonder if that could be an issue for yours. With a faster flow rate, I am sure your fill time would reduce.
There may well be mileage in you trying out some longer wash cycles, to see how they affect behaviour. I would be surprised if you found the same fixed fill time for all programs.
By initial fill, I meant total to fill time for the main wash phase. Exact timings are 9 seconds into the prewash compartment, followed by 18 seconds through the main wash compartment. This is with 3 bar mains pressure.
This intrigues me John. I think the answer may lie in your water supply. 124 seconds seems an unusually long time for a machine to fill. With an empty drum. the initial fill time on my Miele washing machine is around 30 seconds. Perhaps your water pressure is very low or the tap is partially blocked and restricting flow.
Where flow rate is weak, the machine may be programmed to strike a balance between cleaning performance and program duration. You may find that different wash programs use different criteria, eg shorter cycles set a time limit, but longer ones don’t.
What I am certain of is that water level is not determined purely by filling time.
I’m happy to report that within a few minutes of my message to DavidQ, the issue was resolved. 🙂
This is good news, as for me, Qualtex’s pricing has been competitive on many items and next day deliveries reliable.
I noticed their last annual report refers to a shift in business model towards higher margin products and markets. Maybe this signals a return to their roots as pattern parts distributors, but predominantly through retail rather than trade channels.
Had to smile at the name – Sirocco – named after a certain hot fast desert wind, as adopted for the original Italian-designed VW Scirocco back in 1974, a car I aspired to as a teenager.
Wow, would take a while to get through a modern family’s weekly wash!
Video here:
Actually, on reflection, I noticed that the direct drive rotor seems heavily recessed into part of the moulding in the back of the wash tub, so I am wondering if the clearance between the tub and the drum spider is unusually narrow.
Perhaps corrosion to the drum spider during the two years the machine was in storage has caused the spider to swell and bind against the tub rear wall. Removing the rotor would free up the shaft, allowing the drum to turn, So perhaps this is a tub-related issue rather than motor issue after all.
If anyone else has experience of this issue that would be great to know.
