Intake valve make a vibrating noise after a few minutes
OK, I'll try and explain. Things were going great the pump was running and was nice and quiet, then, after a filter change the intake valve started to make a vibrating , losing air kind of noise. Now mind you I have done everything I can think of. I have swapped the intake and out valves and then I even swapped the hoses. I've take apart and have put back together a lot. Here is what happens, when we change the filter and turn the pump back on it will run great like it has been the past year and up until now, then within a few minutes there seems to be a **** in the hose and the water jet reduces flow and the humming starts. Afterwards the intake hose does a lot of moving around. Help!!! Thanks, Steve
Re: Intake valve make a vibrating noise after a few...
From what you are explaining it sounds like the pump is taking on air, which I have seen when the water level is just a tad low & the pump creates a "vortex" at the skimmer box & air is sucked in. Double check the "flap" at the skimmer to make sure it is working properly (not stuck upright)
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The La Cimbali Junior is a 1 group professional espresso machine. Most are located in restaurants that want to serve a cup or two for customers. You will find few homes with this level of machine. Especially with the proliferation of "Mini Super-Automatics" now offered where the whole been is ground, measured, compacted, and served with exacting amount and some top off with frothed milk!
The JR has several items that will normally buzz or whine when in operation. There are also defined "Clicks" of the group valve when a shot is pulled. I will go through the list of likely components that make loud noises when about to fail.
*** The following is for information only! Call your vendor for service as there are dangerous voltages, high pressure, and scalding stem present in these types of professional machines. ***
* All JR's come with a water pump. Two types; Vibration and Rotary. The vibration makes a buzzing sound (50/60 Hz) which will get loud if there is a blockage. The rotary pump with it's accompanying large motor will also "Clack" if no water is flowing through. Stop immediately as both sounds are an indication of a straining pump. If it suddenly goes quiet then the pump is damaged or hopefully the fuse blew. Call for service.
* The group valve will usually buzz when pulling a shot. But if it's louder than normal then there is a problem with the valve (clogged) or coil (shorted). Call for service.
* If there are loud blasts of steam and a quiet period with another blast in about 10 mins. Then the boiler is over heating (runaway steam). Unplug and call for service.
* If there is constant steam blast from the top, even if it's turned off (But NOT unplugged) the element is shorted to water. Unplug immediately and call for service.
* Popping sounds are normal at start up as the metal boiler expands during initial heating. But not after 10 mins of heating. Especially if you see water/steam coming from parts of the machine you don't expect. Unplug. Call for service.
* Power/Heater contactor will buzz if coil is damaged or contacts burnt. Call for service.
* Final; I do not recommend opening the machine yourself as once you hear a loud noise it's usually too late and the damage is done.
* Parts that needs check/replacement; Vibration or rotary pump, motor, group valve, safety valve, vacuum valve, thermostat/pressure-stat, element, boiler and element gasket, contactor.
If the vehicle has had proper oil changes,the noisy valve lifters may the oil filter.If the anti-drainback valve is defective and the filter is at an angle,it may take a few extra seconds to refill before can supply the engine with normal oil pressure.
Also,at the last oil change,has the proper oil viscosity been used?
The noise at the dash is usually a hose.Have someone move the hoses a little while you sit inside and listen for changes in that noise at 2000 to 3000 rpm.As it becomes quiet,adjust the hose or whatever that new position.
Two questions: 1) Are there filters that need to be cleaned on a routine basis with the FDB635RF? and 2) What causes the scum left behind on glasses and utensils? I use a rinse aid, but doesn't seem to be helping. This is a recent problem.
do this. Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.
your model is pretty new. just so you know your warrenty is 1 year parts and labor. 2 years on parts. it should not cost that much money.
there are two components that start before the circulation pump.(wash noise you hear)
first sounds you hear will be the drain pump. usually rattling noises if something is in it but it can make a hum noise if something is jamming the drain propeller up. which is accessible with a T20 torx driver. take the filters out and the mesh filter. and unscrew the screw in the base towards the left. pull out whatever is lodged.
the other humming sound can come from the next component that activates is the watervalve. make sure you dont have a kinked water intake line. otherwise its a bad valve. i have had to change a few of those water valves out already but not for a hum noise on your model. you have a new style water valve. when brands make new parts we get problems fast sometimes..
Sounds like fuel starvation. Would suggest cleaning any filters in the fuel line or replacing. Also check the stop idle valve. This should be inline in the air intake pipe to the intake manifold.. Remove it and clean with WD40.Make sure you note the orientation of the spring. To reset the ECU disconnect the battery for 5 minute the reconnect. The ECU should reset to factory settings. Make sure you know radio and alarm codes! Try petrol additive STP or Redex to clean inside the engine. Thats as far as my knowledge goes, hope it helps.
I had the same problem with my 94 chevy 6.5 diesel,and spent alot of money trying things that people told me to try.I wound up taking it to the dealer and they told me it was the injection pump.They put one in it and that fixed it.It has run great for over a year and a half.This set me back about $4000.00!