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Tap Relay

Legin

Legin

Messages
734
Location
Chester
Vehicle
T6 Ocean 199 4 motion
I fitted a shower to my T6 the same one as factory and whilst I was at it fitted a relay to protect the tap microswitch.
From what I have read the tap fails due to the contacts failing so hopefully this will mean I dont suffer the same fate now the relay takes the load.

I fitted it into the the tap flying leads at the tap and once you take the drawer out isnt that difficult.
 
sidepod

sidepod

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Lifetime VIP Member
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4,020
Vehicle
T4 PopTop
Wow. Over achieving or what? Good effort.
Are the contacts of the tap really under rated?
 
Legin

Legin

Messages
734
Location
Chester
Vehicle
T6 Ocean 199 4 motion
Wow. Over achieving or what? Good effort.
Are the contacts of the tap really under rated?
I maybe wrong as I havent seen the contacts myself but I believe folks get them going again by cleaning the contact faces. This usually means the arcing is excessive due to small contact area and or low contact pressure for the current. Relay far more substantial.
 
jliungman

jliungman

VIP Member
Messages
33
Location
Sweden
Vehicle
T5 SE 174
I fitted a shower to my T6 the same one as factory and whilst I was at it fitted a relay to protect the tap microswitch.
From what I have read the tap fails due to the contacts failing so hopefully this will mean I dont suffer the same fate now the relay takes the load.

I fitted it into the the tap flying leads at the tap and once you take the drawer out isnt that difficult.
Sorry for jumping into thread this late... :)
How would a "failing" tap relay behave? I seem to be getting very little voltage at the pump when everything is connected and tap is on, but full 12 volts when I disconnect the pump and measure with zero load. This seems consistent with your theory of small contact area. The pump itself seems to be ok (removed and tested it). Any ideas?
 
Legin

Legin

Messages
734
Location
Chester
Vehicle
T6 Ocean 199 4 motion
Standard there is no relay so you just have the tap switch. Its most likely you have a high resistance across the tap switch contacts due to arcing.

You should remove the tap switch and clean the contacts with abrasive paper, you can check before doing this to confirm its the switch by shorting across the terminals if you want.

The relay is a modification to transfer the switching current from tap switch to the bigger and tougher relay contacts to avoid this eventuality.
 
jliungman

jliungman

VIP Member
Messages
33
Location
Sweden
Vehicle
T5 SE 174
Standard there is no relay so you just have the tap switch. Its most likely you have a high resistance across the tap switch contacts due to arcing.

You should remove the tap switch and clean the contacts with abrasive paper, you can check before doing this to confirm its the switch by shorting across the terminals if you want.

The relay is a modification to transfer the switching current from tap switch to the bigger and tougher relay contacts to avoid this eventuality.
This worked, thanks! Nice to not have to buy a new tap.
Adding a relay seems like a good idea!
 
M

mikeco11

Messages
1
Location
W Yorks
Vehicle
T6 Ocean 204
Hi, I tried this as a precaution after I fitted a new working tap. But I wasn't able to get the tap to work with the relay in place (in fact now I can't get the tap to work at all event though rewired back to normal). Please could you add the terminal numbers for the 4 or 5 way relay in the diagram, so I can be sure I got the right ones? Also, could you suggest how I can test I haven't blown a fuse or something (I can't find the right fuse to check anywhere!). thanks
 
Loz

Loz

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Lifetime VIP Member
Messages
4,893
Location
Berkeley Gloucestershire
Vehicle
T6 Ocean 204 4Motion
If it doesn't work after reconnecting, then I expect the fuse has blown, it's an orange 5A one (there are 2, 1 for camper display the other for the pump)

I'll add the terminal numbers a bit later on.
 

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