Kenlowe Fan Install HELP PLEASE - Page 3

FrenchMike · 24th March 2009, 15:00

For your first steps in the electric world....

Mike

pitkin03 · 24th March 2009, 18:05

it was actually quite an easy install all in all but the elctrics well and truly got me stumped, if anyone else is considering doing it i would suggest that you have some basic knowledge of electrics or atleast have someone on standby who does.

Jules · 15th June 2009, 20:39

Just to clear up some confusion on Keith's original wiring suggestion.
I have spoken to him this evening & he agrees with my following reasoning for a slight change of plan!

As he used his T4 to switch ON & OFF the new fan speeds, and to generally test the new installation, he didn't take into account the fact that the Trinary switch operates the MIDDLE relay. (the one which he disconnected !)

So there is no Trinary Protection (high pressure or overheat of compressor)
if middle relay is made redundant.

Solution:

I leave the wiring totally untouched in the control box and make the purple wire redundant. No need to tape the black wire up as this is now used in circuit.

This re-think also matches the configuration with the later 2 speed control boxes.
(ie leaving the same end small relay outputs unconnected)

With my method, the fan comes on HIGH SPEED slightly earlier at 106 deg to 119 deg (see table below.)
I'd rather have the wiring this way than not have any Trinary protection!

So just to summarise, if you are completing a new Kenlowe install no need to remove the control box cover!
Simply make the thick grey wire redundant and connect motor as shown below

For anyone who's followed Keith's wiring....Don't panic it will still cool the engine when it should but just be aware you won't have any failsafe compressor protection

M47R Diesel 2.0 litre

If the ECT sensor registers an engine coolant temperatures of:

Old 3 speed Configuration:
Between 100°C and 105°C, =Low fan speed
Between 106°C and 111°C, = Medium fan speed.
Between 112°C and 119°C, = High speed.

Kenlowe 2 speed Configuration:
Between 100°C and 105°C, =Low fan speed
Between 106°C and 119°C, = High fan speed.

Top wires from Control box.
Photo taken before fully soldered!

Another recommendation is to re-position the Control Box next to battery box. Length of Kenlowe wires allow this.
If a relay goes faulty at a later date, no dismantling of front end required!

Any further thoughts are most welcome.

ceedy · 15th June 2009, 21:05

Ah ha!!

This would sxplain why the trinary test did not work with my bosch fan motor
install on sunday..

pop that on the next job list,

Chris

24th March 2009, 15:00	#21
FrenchMike This is my second home Rover 75 Saloon Join Date: Aug 2007 Location: Avignon Posts: 4,466 Thanks: 94 Thanked 661 Times in 554 Posts	congratulations ! For your first steps in the electric world.... Mike

15th June 2009, 20:39	#23
Jules This is my second home ZT 260 SE Twilight and 10 other 75 ZT's :O Join Date: Jan 2007 Location: Conwy NORTH WALES Posts: 11,094 Thanks: 512 Thanked 1,116 Times in 763 Posts	Just to clear up some confusion on Keith's original wiring suggestion. I have spoken to him this evening & he agrees with my following reasoning for a slight change of plan! As he used his T4 to switch ON & OFF the new fan speeds, and to generally test the new installation, he didn't take into account the fact that the Trinary switch operates the MIDDLE relay. (the one which he disconnected !) So there is no Trinary Protection (high pressure or overheat of compressor) if middle relay is made redundant. Solution: I leave the wiring totally untouched in the control box and make the purple wire redundant. No need to tape the black wire up as this is now used in circuit. This re-think also matches the configuration with the later 2 speed control boxes. (ie leaving the same end small relay outputs unconnected) With my method, the fan comes on HIGH SPEED slightly earlier at 106 deg to 119 deg (see table below.) I'd rather have the wiring this way than not have any Trinary protection! So just to summarise, if you are completing a new Kenlowe install no need to remove the control box cover! Simply make the thick grey wire redundant and connect motor as shown below For anyone who's followed Keith's wiring....Don't panic it will still cool the engine when it should but just be aware you won't have any failsafe compressor protection M47R Diesel 2.0 litre If the ECT sensor registers an engine coolant temperatures of: Old 3 speed Configuration: Between 100°C and 105°C, =Low fan speed Between 106°C and 111°C, = Medium fan speed. Between 112°C and 119°C, = High speed. Kenlowe 2 speed Configuration: Between 100°C and 105°C, =Low fan speed Between 106°C and 119°C, = High fan speed. Top wires from Control box. Photo taken before fully soldered! Another recommendation is to re-position the Control Box next to battery box. Length of Kenlowe wires allow this. If a relay goes faulty at a later date, no dismantling of front end required! Any further thoughts are most welcome. __________________ [SIGPIC][/SIGPIC] Newbies do now!! 1. Plenum drains..all 3 or 4 year dependent 2. Cooling fan..All speeds functioning 3. Bonnet cable divider block

15th June 2009, 21:05	#24
ceedy This is my second home All Trophy Blue ,ZT260#50 , ZT CDTI Auto, ZR105+ and 1.8T Firefrost spoiling the Set . Join Date: Nov 2006 Location: Nr Sherborne But in Somerset.. Posts: 6,091 Thanks: 916 Thanked 1,214 Times in 768 Posts	Ah ha!! This would sxplain why the trinary test did not work with my bosch fan motor install on sunday.. pop that on the next job list, Chris __________________ The Three Bloo's Wifey's Zr105, MY CDTI & 260 #50 and Number One sons 1.8T in Firefrost When I were a lad Zero to 142 in 10.25 secs at the Pod on my Blown Norton. 210 Kart Champ in 70's

24th March 2009, 18:05	#22
pitkin03 Regular poster rover 75 2.0 KV6 1999 Join Date: Mar 2009 Location: North Devon Posts: 57 Thanks: 0 Thanked 0 Times in 0 Posts	it was actually quite an easy install all in all but the elctrics well and truly got me stumped, if anyone else is considering doing it i would suggest that you have some basic knowledge of electrics or atleast have someone on standby who does.