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Hi Spark123, I think your right until 1 July we need to calculate using 240v ( Open circuit voltage at Tx). Harry

Hi Spark123, Looking at the 0.4s disconnection time I make Zs = 230/200 i.e 1.15 Ohms or 0.92 Ohms as an 80% figure. Would you agree. Once again many thanks Harry

Thank you spark123. much appreciated Harry

Hi, It is a BS1361, Unfortunately I did not take a picture. They do make 35a see the link http://www.thefusecompany.com/fuse.php?cPath=42&products_id=137&sid=7c45cbfef3cab9575800dbac8896f521 I will ring NAPIT and ask them for the value in the morning. I came across this when carrying...

Hi, Can anyone advise me where i can find the max EFLI for a BS 1361 35A consumer Unit fuse fitted in a MEM Memera Switch disconnector. Manmy Thanks Harry

Hi, Just had a new close coupled toilet installed. The cistern fills correctly and when the button is depressed it empties the cistern completly. However, when it flushes most of the water is ejected into the bowl under the rim at the end directly opposite where the cistern is. The result is...

Hi, Does anyone know the correct location of the front baffle on top of the cast iron heat exchanger on this model. There are pins/comb like section on one side and a flat section on the other. The baffle was originally found with the comb section facing towards the rear of the boiler, comb...

Hi Solo, Your right expensive job if you buckle the cylinder, that's the reason i'm being cautious. Kind regards Harry

Hi Pete, Thanks for the reply mate. I have the socket type spanner no problem. Are the tanks steel or copper? also I normally use a blow torch to heat and break the immersion seal. Is it ok to use heat in this cylinder as you can not see the insulation. Thanks Harry

Hi, Is the Immersion element on an Elson 600e (rectangular cylinder) fairly easy to change? Anything to look out for or any tips? I've changed elements on standard cylinders many times but never one on an Elson cylinder. Harry

Hi Ollski, I think its one of the more recent Sauniers Duval's which were made by Glow Worm. Do they still have the same reputation? Harry

Hi, Going to change a DHW heat exchanger and three way valve actuator (cartridge) for a customer on this boiler shortly. Is it safe to close the isolating valves (flow,return and cold water) on this boiler or will they leak? Also is DHW replacement staight forward on this model or any...

Hi Keego, Thanks for your reply. The gas fire is very old (but in very good condition). I always like to have the manuals handy when I service gas fires so that I can carry out the safety checks as per the manufactures instructions. Kind Regards Harry

Hi, Would any kind person be able to forward me a service manual for this gas fire? Need to service fire for an elderly lady. Kind Regards Harry (RGI)

Hi, Thank you everyone for there help. ChrisR is it not possible to put the microswitch on before the pipes are connected to the diverter body (otherwise its working blind). I will be able to remove left hand panel but not the left (boiler in left hand corner). Would the bent open ended...

Hi all, ChrisR, you wanted to know what was causing the pilot to go out. I had the Gas meter regulator changed and since then we have had no more problems. So it appears the regulator was sluggish as Tony suggested. Kind regards Harry

Hi, Need to change a diverter valve on the RSF820 Ravenheat boiler. Looks a little tricky, any advice from those who have done this would be appreciated. Any special tools that may help, any other component removal necessary? Is it possible to reach and undo all five connections with normal...

Hi Chaps, Did as securespark advised and removed breaker. The details were embossed on the side. The breakers are Loadmaster, series 15 and type 3. Cat M3 BS3871. Maximum measured earth fault loop impedance for mcb's to BS3871, type 3 is shown on page 114 (table 2D 11) of the current...

Hi, Could anyone please advice me which Maximum earth fault loop impedance tables are to be used for the Dorman Smith mcb's. The mcb's do not have anything witten on them apart from the ampage ratings. They are fitted in a Dorman Smith CU, which is metal and very old. The consumer unit has a...

Hi Securespark, No offense taken. In answer to your question, no this is not my first PIR. I just like to better myself and its only with discussions with other experienced people that we gain knowledge. It's always easy to write unable to ascertain. However, its more rewarding to think...