Because of its design, there is no need for a separate pressure (expansion) tank, nor is there any need to adjust start and stop pressures as per traditional pressure switches. The unit will protect the pump should the water supply fail (due to blockage in the pipe or tank running dry) and will automatically restart normal operation once water is restored. Show We receive many phone calls every day from people who have bought a house with a pump or have had a pump installed and they don't understand the basics of pumps so when a problem occurs, they don't know what to do. Your pump owners manual will list a troubleshooting guide, so please refer to that first, otherwise this is a short list of a few things that you need to know about household pressure pumps and then some problems with a trouble shooting guide. Things To Know!
Common Troubleshooting Problems My pump turns on every 5 minutes for 15 seconds and it is annoying. Household pressure pumps are designed to start when the pressure that is in the pipework falls, generally this is caused by you turning on a tap, flushing the toilet or, the dishwasher starting or some other outlet. When the pump turns on frequently and you have not turned on an outlet the problem is usually caused by a leak in the system. The frequency of the turning on could be as often as every 1-2 minutes or 1-2 hours or, anywhere in between. The leak could be a toilet cistern, a dripping tap, a hot water service over-pressure valve that is faulty, a pin hole in an internal pipe or any other leak. In 99% of cases it is a leak and not the pump.
Every time I turn on a tap the pump starts and as there are 5 of us in the house, that is a lot of starts, can I do anything to fix this? All pumps with just an electronic controller will turn on every time that you turn on a tap, start the washing machine or, flush the toilet and this can be very expensive on power and pump replacements. The electronic controllers protect the pump from damage if the pump runs out of water and the help to provide a more constant pressure of water but there are downsides as well. Installing a 100 litre pressure (accumulator) tank after the pump and before the house will have a huge effect. With a 100L tank on my own house pump I can flush the toilet 6 litres, wash my hands 2 litres, wash the cats bowls 4 litres, fill the jug 1 litre, rinse some dishes 6 litres, fill the dogs water bowl 2 litres and water 3 outside plants 9 litres before the pump even turns on. That is 7 pump starts eliminated and lots of power saved. A pump on a house with 2 adults and 3 children and no pressure tank could easily turn on 100 times a day and that is 36,500 times per year. Put a 100L tank on the same house and the pump starts could go to 25 per day and only 9,125 per year. A pump with a 100L tank should last 4 times longer!
My pressure pump does not switch off or it continues to turn on and off.! Possible and common causes could be :- 1. Air leaks into the system Because air is leaking somewhere into the pump, it is unable to build up full pressure, and therefore cannot reach its deactivation pressure level. Result: the booster pump runs nonstop. Solution: check all the hoses / pipes for holes, and seal them. If no holes can be detected, check all the couplings on the suction side as well as on the delivery side. Put Teflon tape on all couplings for maximum airtightness. 2. No non-return valve or foot valve attached to the suction side With no non-return valve or foot valve attached, water runs from the booster pump back to the source, which the pump regards as water supply. Result: the booster pump detects that pressure in the pipes is falling, and switches on to add pressure. Solution: attach a non-return valve or foot valve to the pump's suction side. A non-return valve or foot valve ensures that water flows in just one direction: namely, towards the pump. As a result, the water level and pressure cannot drop. Note: All the suction hoses we supply are fitted with a foot valve. If you have purchased one of our suction hoses, the problem is not the result of a valve missing. 3. Dirt between valves. Dirt between the valves may cause water to seep through. Result: pressure falls and the booster pump responds by switching on. Solution: clean all the valves so that they are airtight again. This applies to the following types of valves:
4. Drip leakage A booster pump is perfectly capable of supplying water to a variety of domestic appliances, such as toilets, washbasins, washing machines, and so on. However, drip leakages frequently occur (particularly with regard to toilets), which means that water seeps bit by bit from the pipe: for instance, into a toilet cistern. For you, this leak may be 'invisible' but not for the pump. Result: Because water is seeping from the pipe, the pump regards it as water supply, and also detects a drop in pressure. The activation pressure level is reached, the pump switches on and then off again when the deactivation level has been reached. Several - even many minutes - may lapse between the pump switching on and off. Solution: Correct the drip leakage problem of the connected device: for example, by making use of a more solid float or valve. How do I reset my Grundfos pump?The Auto-reset function can be activated/deactivated by press- ing the on/off button for 5 seconds. Note: When water is consumed, the pump will start and stop automatically, whether the Auto-reset light is on or off.
Why does my Grundfos pump keep running?An intermittent fault like the pump and boiler coming on is usually caused by either an actuator or the programmer. Usually if it's the programmer though the thermostats for the heating and hot water will still do their job and turn the boiler and pump off.
How do you troubleshoot a Grundfos pump?Grundfos Troubleshooting Tips for "CR" Pumps. Wrong rotation - Check wiring for proper connections, correct wiring.. Strainers, check valves, or foot valves are clogged - Remove strainer, screen or valve and inspect. ... . Pump impeller or guide vane is clogged - Disassemble and inspect pump passageways.. How do you adjust a Grundfos pressure switch?Turn screw (pos. A) clockwise to increase the cut-out pressure. Turn it counter-clockwise to reduce the cut-out pressure. The differential pressure range remains unchanged.
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