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  1. rolyberkin

    Circulation pump permanently on

    Can anyone help, I have looked at a central heating pump for my brother in law (who is a plumber!?:-) it is an HRM oil fired boiler, the problem is that the circulation pump is permanently on, there is underfloor heating with the system, the wiring is shocking and I will probably have to re wire...
  2. O

    Mono Water Pump Cabling

    Hello, Can anyone please assist me in the following: My client wants to feed a Mono water pump from a distance of approx. 360 metres. I have a choice of using PVC/PVC cable taped to a catenary wire. I am not happy with this method and would prefer to run PVC/PVC/SWA cable underground. The...
  3. rolyberkin

    Cable for heat pump control

    What is a normal specification for a 12v screened 'control' cable for a heat pump please?
  4. A

    3 phase quarry pump

    Latest fact finding mission for you gurus to help me learn about Todays problem was a quarry pump not running, guy went out and meggared the cable and pump and found one of the two 10mm cables was down on the black phase. So while cable was ordered up and being delivered he was called...
  5. sythai

    New to me : Air Source Heat Pump

    Hi Chaps Starting 3 new builds shortly. Had brief chat with plumber today over phone, mentioned that an air source heat pump will be part of the set up. Pressurised system with buffer tank, UFH ground floor & rads first floor. It's a first but never had anything to do with air source heat...
  6. T

    3 phase pump

    Hi All i have 3 phase pump set on a primary chilled system for which i had a quick look at a few days ago ive given a quote to look at as its not running for love nor money, ive only spent 10 minutes fault finding but something doesn't add up, its 3 phases and earth no neutral, im getting 230v...
  7. Adie moore

    pond pump wire

    I've been to quote on a job today where the customer had dug a pond / water feature in to the garden. their is no raised edge around the pond, it will go grass, edging bricks, water all at about the same level. it's a very minimalist look he is going for. the edge of the feature is about 2M from...
  8. L

    Domestic Sewage Pump!

    Evening All I have a domestic sewage pump to connect up later on this week. Its a 3 float system(stop, Start,Assist) and has two pumps. The pumps are only supposed to run one at a time in sequence to lengthen their lifespan. They will run together if the assist float comes in to play. Its a...
  9. D

    VFD controlled Pump relationship clarification

    We Know that when configured for scaler control, a VFD willadapt its switching modulation to ensure that when frequency is changed, motorterminal voltage will change hence the term Voltage frequency ratio. Similarly, if we look at the affinity laws for a centrifugalpump we see that a 10 %...
  10. Jackflash

    water pump grips

    Need some new grips, who's got the best water pump plier grips?
  11. G

    Cabling to mains water feature pump

    Hi All, Been asked to connect up a mains water feature which comes with a 10m rubber flex. Just wondering if anyone else has done this and how they protected the cable to the pump from mechanical damage. Thanks Geezza
  12. Z

    Private petrol pump test

    Hello everyone, After abit of help I have done my compex 1-4 and 7&8 I went to a private/commercial property they use the pump to sell the fuel for park time racing events but the tanks and pipes where installed before 1974 so am I correct it doesn't need a area classification or is the the...
  13. C

    swimming pool pump on a DPST timer

    Hi all, first time poster :) trying to figure out the british naming conventions on electrical components, and in need of help to identify the name in the UK, so here goes.. I have a single speed 1hp pool pump with a sal****er clorinator that requires to be run for 2 hours daily to keep the...
  14. GBDamo

    Two Controllers operating one pump

    Hi All, New here and a bit of an ask but I'm trying to control a CH pump using two Delta Dor wireless controllers. The attached wiring diagrams show how we wire a single zone, single Delta Dor, single zone valve and how I propose using two Delta Dor controllers from two separate zones/zone...
  15. B

    Vehicle Tyre Compressor wired direct from battery to pump. Wire overheats.

    I just bought a 12 volt tyre compressor and the instructions say connect it directly from the battery. The pump worked well but when I disconnected it the wires were very hot. Does this mean that the wire is not sufficiently robust?
  16. R

    Swimming pool pump timer

    I have an MK panel with time clocks for pump and boiler. These are mechanical with tabs to set on/off times. One has failed and I just cannot find a supplier for a replacement. Anyone got any ideas?
  17. P

    pump staying on

    heading to a job tomorrow and have been told the pump for the central heating is staying on all the time? anyone ever come across this issue before? pretty sure its a "s" plan heating system with motorized valves! any info appriciated!
  18. S

    Shower Pump install

    Hi there, I am a newbie to this forum, i am a fully qualified electrician and have recently passed my FICA 17th edition regs etc, (December 2014), however like many of us, i am still learning. I'm after some advice regarding fitting a new shower pump. A friend is replacing an electric shower...
  19. S

    C plan with pump over run

    Hi i am working for a boiler conpany wiring their systems, i have come across a c plan and the new boiler they have installed has a pump over run now with connecting that up as i see correctly the boiler is permanently on due to the pump over run and heating all being connected together. Is it...
  20. L

    UF Heating dedicated pump switching.....

    Is it OK to wire a dedicated UF heating pump to the switch live from the programmer to the Zone valve (usually brown) as I can't use the switch live to the boiler (usually orange) or it will fire up other zones when not required. I am worried about pump operating slightly before the UF heating...

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