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Post by regprescott on Mar 17, 2012 20:57:26 GMT
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Post by johnwp5bcoupe on Mar 18, 2012 6:37:29 GMT
Good result Ian well done
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Post by Warwick on Mar 18, 2012 22:57:11 GMT
Thanks Ian (and Reg),
I just looked it up on the web. Have I understood it correctly? There is an adjustable temperature setting for the first fan, and then the second fan cuts in if the temperature goes 5 degrees higher than the set temperature?
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Ian B
Rover Rookie
Posts: 23
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Post by Ian B on Mar 19, 2012 22:33:24 GMT
Hi Warwick, I actually only have a single fan, but the controller works to make it come on at slow speed first, then faster if the temp goes up another 5 degrees.
Ian
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Post by Warwick on Mar 19, 2012 23:03:41 GMT
Thanks Ian,
I've been looking for something like that for a few years. I tried all sorts of searches on line and asked industrial control contacts. I was looking for 3 setpoints or even 4. But 2 is a good start. My Range Rover has 4 fans - 2 in front of and 2 behind the radiator, but they all come on at once. In winter I generally disconnect 1, although I now have a thicker radiator and it managed through this summer on only the 2 small pusher fans intended for the air-con.
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gollop
Rover Fanatic
Posts: 108
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Post by gollop on Mar 20, 2012 5:35:51 GMT
Hi all Hopefully I'll have as much joy as Ian when my replacement arrives. I spoke with Kenlowe and they offered a replacement straight up. So I've currently got the fan hardwired to a switch in the drivers side until the replacement thermostat arrives. Actually it's a really good way of seeing exactly where the running temp is on the gauge as it doesn't start automatically. Kenlowe reckons the ideal temp is in between normal and hot but I found its only just above the N in the middle of the gauge if that makes sense.
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gollop
Rover Fanatic
Posts: 108
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Post by gollop on May 2, 2012 21:10:35 GMT
Hold the front page. The unit has stopped working again! This is a new sensor and it packed up in exactly the same way. This is driving me nuts has anybody had any luck with these kenlowe units they seem pretty cheap and nasty but not cheap?
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Post by enigmas on May 2, 2012 22:05:44 GMT
I have had kenlowe items on my car for the last 20 years (2 fans & an adjustable thermal switch but I'm in OZ. To set the fan cut-in & out correctly you really need to fit an accurate guage that reads the temp in degrees. The Rover factory unit doesn't tell you anything! If using an adjustable thermal switch it can be wired so that it receives 12 volts even when the ignition switch is in the off position. This way the fan will run till the temp is brought down to the preset level and stop thermal soak when the engine is shut off. (similar to cars runnng turbos)
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Post by Warwick on May 3, 2012 2:35:48 GMT
Gollop is in Sydney, Vince.
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gollop
Rover Fanatic
Posts: 108
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Post by gollop on May 3, 2012 3:12:06 GMT
Cheers Warwick yes I'm in Sydney the fan has been working perfectly and has just stopped! Fuses r good and nothings disconnected. Confused? I am. Lol
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Post by Warwick on May 3, 2012 5:50:21 GMT
What sort of sensor does it use Gollop? Is it a wire and remote sensor, or a copper capillary tube and bulb? If the latter, check that the capillary hasn't been kinked or punctured.
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Post by enigmas on May 3, 2012 9:19:27 GMT
As Warwick states, but also ensure the sensor unit is submerged in the coolant and not stuck in an air pocket. (Ok, I must be more observant when I read the posts..Gollop lives in OZ) If the cooling system was drained and then refilled it may need to be 'bled' free of air...just like hydraulic brakes. If the system does not have a 'bleed point' to do this, then sometimes it takes several starts till hot and then cool down periods for the system to purge itself free of air. (Note: the heater switch should be on hot to purge this as well) Here's something to cogitate. Note: Adjustable thermal switch (near top inlet hose) Small analogue temp gauge fitted beside the switch accurately indicates temp at this point. Capillary sensor for thermal switch fitted at top hose at Radiator inlet. If you look carefully you may just be able to see it. The bypass feed hose to the bottom thermostat can be seen looping over the distributor. Cooling system mods to my Rover V8 powered Magnette. The small electric fan fitted to the front of the radiator is 11" diameter and is manually switched. (I only turn it on if the vehicle is sitting stationary for a considerable time)
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gollop
Rover Fanatic
Posts: 108
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Post by gollop on May 4, 2012 22:23:49 GMT
Thanks for all the help guys. My sensor is the type which slots through the radiator, and is not actually submerged in liquid. I don't think this is the problem though as last night after the short drive home (getting engine up to normal on open road driving, so no need for fan). The last bit of my drive back is a very steep hill and as soon as I was in the garage, popped the bonnet and set about giving everything a dawn good waggle! Whilst Wiggling the relay off it went the fan started and hey presto all working! Left it going for 5 minutes and the fan turned it self off and over heated! So I took the relay out from the unit and let it cool down and when it was replaced again off it went like a frog in a sock!
My conclusion of this is that the relay is getting hot (I have it mounted on the inside right head wing) maybe I'm to close to the exhaust? Once I get down stairs I will post up some photos for advice. Again thanks for the help.
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gollop
Rover Fanatic
Posts: 108
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Post by gollop on May 5, 2012 0:57:39 GMT
Ok here's my bay from the left Attachments:
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gollop
Rover Fanatic
Posts: 108
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Post by gollop on May 5, 2012 0:58:25 GMT
Feont Attachments:
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gollop
Rover Fanatic
Posts: 108
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Post by gollop on May 5, 2012 1:00:18 GMT
And in the right where the thermostat is top right. Is this the wrong location? Attachments:
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Post by enigmas on May 5, 2012 23:01:48 GMT
My eyes aren't what they used to be. I struggle to discern elements clearly with these images. (Unfortunately the large version is not much clearer)
** Replace the sensor with one that is adjustable and is immersed in the coolant.
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Post by Warwick on May 6, 2012 3:04:25 GMT
Gollop,
The best jpeg size for uploading and displaying here is the so-called standard size - 800 x 600 pixels.
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