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water pump erratic
424196 PostPosted: Sun May 11, 2008 6:04 pm Thank this member for this postReply with quote
buffallobill Subscriber 26/10/2008
 
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i have a small problem, if i run the cold water taps shower/sink or kitchen ,
the pump runs perfect, on /off brilliantly, if i run hot water the pump runs erratically, sounds like pulsing,then when i turn hot tap off the pulsing carries on for a further 10/20 seconds, i have tried adjusting the pressure on the small block with a thumb screw on top but no avail, seeing the cold water works on/off perfectly i am at a loss, has anyone any suggestions please. the water heater is a carver with electric or gas heater,on a swift sundance 590 rl. thanks bill. Confused
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Re: water pump erratic
424201 PostPosted: Sun May 11, 2008 6:20 pm Thank this member for this postReply with quote
Zebedee Subscriber 06/10/2008
 
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buffallobill wrote:
i have a small problem, if i run the cold water taps shower/sink or kitchen ,
the pump runs perfect, on /off brilliantly, if i run hot water the pump runs erratically, sounds like pulsing,then when i turn hot tap off the pulsing carries on for a further 10/20 seconds, i have tried adjusting the pressure on the small block with a thumb screw on top but no avail, seeing the cold water works on/off perfectly i am at a loss, has anyone any suggestions please. the water heater is a carver with electric or gas heater,on a swift sundance 590 rl. thanks bill. Confused


Mine does almost the same Bill.

I asked the technician at our dealers, and he said they often sound as though they are at death's door, but not to worry as it depends where and how they are mounted.

The run-on with the hot water is just the pump pressurising that part of the system again, and re'filling the hot tank. They all doo it to a greater or lesser degree - mine certainly does.

Don't think you have a problem.

Cheers

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Re: water pump erratic
424206 PostPosted: Sun May 11, 2008 6:36 pm Thank this member for this postReply with quote
Charisma Subscriber 21/04/2009
 
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buffallobill wrote:
i have a small problem, if i run the cold water taps shower/sink or kitchen ,
the pump runs perfect, on /off brilliantly, if i run hot water the pump runs erratically, sounds like pulsing,then when i turn hot tap off the pulsing carries on for a further 10/20 seconds, i have tried adjusting the pressure on the small block with a thumb screw on top but no avail, seeing the cold water works on/off perfectly i am at a loss, has anyone any suggestions please. the water heater is a carver with electric or gas heater,on a swift sundance 590 rl. thanks bill. Confused


I fitted a Fiamma A20 expansion tank to the pump output pipe and it fixed this problem completely. The expansion tank stops all pump pulsing and keeps the water pressure constant. Brilliant device. Don't know why they are not fitted as standard.

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424207 PostPosted: Sun May 11, 2008 6:36 pm Thank this member for this postReply with quote
JohnsCrossMotorHomes Subscriber 20/11/2008
 
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Cooorect Zeb.

You got the answer in one!

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424233 PostPosted: Sun May 11, 2008 7:23 pm Thank this member for this postReply with quote
buffallobill Subscriber 26/10/2008
 
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JohnsCrossMotorHomes wrote:
Cooorect Zeb.

You got the answer in one!

thank you charisma and peter, is the fiamma a20 easy to fit.are there insalation instructions with it, does it come already pressurised, and finally what price do they cost, cheers and thanks again bill.
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424237 PostPosted: Sun May 11, 2008 7:42 pm Thank this member for this postReply with quote
JohnsCrossMotorHomes Subscriber 20/11/2008
 
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buffallobill wrote:
JohnsCrossMotorHomes wrote:
Cooorect Zeb.

You got the answer in one!

thank you charisma and peter, is the fiamma a20 easy to fit.are there insalation instructions with it, does it come already pressurised, and finally what price do they cost, cheers and thanks again bill.


Hi, yes easy to fit and price is £18.

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424357 PostPosted: Sun May 11, 2008 10:58 pm Thank this member for this postReply with quote
buffallobill Subscriber 26/10/2008
 
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fiamma A20 expansion tank ordered , thanks charisma useful link . Smile
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425433 PostPosted: Wed May 14, 2008 8:27 am Thank this member for this postReply with quote
buffallobill Subscriber 26/10/2008
 
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john cross motor homes , superb service , recieved expansion tank ,fiamma A20 yesterday will fit this weekend, Very Happy
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425439 PostPosted: Wed May 14, 2008 8:40 am Thank this member for this postReply with quote
Alfa_Scud Subscriber 06/09/2008
 
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Same here for JohnsCross, ordered Monday, delivered yesterday, went to fit it then realised all my fittings are push fit, so it's off to find a couple of 1/2"-12mm fittings from the local plumbers merchant & try again tonight.

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425453 PostPosted: Wed May 14, 2008 9:27 am Thank this member for this postReply with quote