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Re: Model cwtf-mv water does not turn off , press start...
First remove the front panel and there will be instructions fro reprogramming the brewer. If you have done this and it still does not work, then there is a problem with the control board.
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Normally that would be an easy fix if the water just continued to flow. You just replace the water inlet valve and they can stick open or partially open. But you say if you power off, the flow stops. That sounds like the control board is supplying residual power to it. Control boards are expensive so I would call for service. Or you can try some of the fixes here.
You should call your vendor for service on any commercial brewer. (Especially if it's on loan from them)
*** the following is for information only as all repairs should be performed by a qualified tech.***
The CWTF has a start switch activates the timer (analog or digital) board which turns on the water feed to the brew tank. This forces previously heated water out and sprayed over the ground coffee in the brew funnel. Coffee then drips into the decanter.
* It's not often this momentary brew switch goes bad even though it's pressed many times a day.
* Check the on/off switch. Most models will light up when switched on.
* Check the timer. Digital timers tend to be sensitive to electrical storms. Analog timers have a dial and are more tolerant of electrical surges.
* Check the water fill solenoid. Should be a definite click when activated. Water filling sound should be very clear.
* No water flow then check the water supply line if it's on.
* Final; this brewer needs service. Call your coffee vendor for advice.
Aloha, ukboy57
You should call your vendor for service on any commercial brewer. (Especially if it's on loan from them)
*** the following is for information only as all repairs should be performed by a qualified tech.***
* Since no brand or model given. I suspect this is a commercial coffee brewer as it probably has a plumbed in water line. Bloomfield, Curtis, and Bunn are the most common. I'm using Bunn CWTF for this example but it covers most other brands too.
* The CWTF has a start switch activates the timer (analog or digital) board which turns on the water feed to the brew tank. This forces previously heated water out and sprayed over the ground coffee in the brew funnel. Coffee then drips into the decanter. Under filling is caused by un-calibrated timer or interment timing.
* The timer comes in two types; Dial (old) and Digital. If it's the dial then a simple turn of the dial will make less or more water flow to decanter. You MUST re-brew (no coffee, but use funnel) into the decanter or pot that you plan to use. Don't mix up different size pots as the timer is only good for 1 setting. Turn dial and brew once to check. Keep checking with a brew after each adjustment. Do a final brew just to be sure.
* The digital timer is a bit more complicated to adjust. Sorry, too many switches and options to go into it here. Check Bunn.com for a manual (FREE download) on line. Several methods are listed. The fill and stop is the easiest one.
* If it does not adjust or won't keep the set time then. Replace the timer. Digital timers tend to be sensitive to electrical storms. Analog timers have a dial and are more tolerant of electrical surges.
* Check the water fill solenoid. Should be a definite click when activated. Water filling sound should be very clear.
* No water flow then check the water supply line if it's on.
* Final; this brewer needs service. Call your coffee vendor for advice.
Aloha, ukboy57
P.S., Older timers usually are reliable. It may have been set for a larger decanter or pump pot. The pump pots come in 2.5L and 3L for the big boys. Decanters are 10 cup and standard 12 cup. Check your office as there may be an unused pump pot or small decanter in a cupboard that got put away for making "too little" coffee. Try a brew in this smaller pot. Any change in pot size requires an adjustment to the timer. This is the only way to get "Less" or "More" out of the brewer. (Yes there is a way to use the "Pour Over" function for one time special brews. Check the manual for this option.)
the fill drain is plugged and the water is overflowing. open the top and, using a phillips head screwdriver, poke through the lime buildup in the trough drain until the water goes down more freely.
Make sure the CPU is on the set instead of lock, then hold down the switch for about 10 seconds you should hear a click, click, click. Think of it as the water stopping and starting.
Which grommet, there are several on the bunn models, but the most commonly replaced one is the one for the P. stat. Remove the top panel there are 2 screws one in front and one in back, then lift the top 2 burners off machine that will give you access to the tank.
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