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  • In the morning it appears that water has leaked out of the reservior, is this a normal thing?

     fixbear updated 2 years, 1 month ago 1 Member · 2 Posts
  • guest

    October 11, 2017 at 12:00 am

    We don’t leave the coffee maker plugged in constantly.  Whenever a rental is made they plug in the coffee maker at that time.  It seemed that when we left it on continually, the water evaporated ( it may be used only once or twice a week )  The unit is used in our church meeting hall.  The hall is rented out several times during the month, but coffee is only needed when rented, for funeral dinners, a weekly coffee time which runs from 8:00 am to 10 am.  The pot is not in constant use.  There is a meeting at the hall on Tuesdays and the unit is plugged in so that it will be ready for cold water on Wednesday.  Are we doing something that is causing the unit to leak.  We had tried to plug the unit in when we arrive for our Wednesday coffee but when we plug it in the first pot of coffee is not hot at all.  We are well satisfied with our unit but would like to know if there is something that could be done to stop the leaking.


    I looked in the back and found this information:


    Model   VPR BLK w/2 Glass Containers

    Serial #U or V PR0737071


    Ruth A. Purvis

    Cambridge, Iowa 50046

  • fixbear

    October 12, 2017 at 8:00 am

    Bunn’s VPR comes in several voltages and heater sizes as well as warmer’s  From what you have posted I believe you may have a 115 volt unit. It has a heated water tank that holds about 2 and 1/2 carafes of water that are kept at the brew temperature for fast brewing of about 2 min.  When water is heated it expands and evaporates quicker.  The brewer uses a displacement method of brewing.  This means that the water level in the tank and the spray nozzle are at the same level.  On or off the water will still come out the spray head if added to the tank.


    In commercial kitchens the first pot of the morning is run without grounds to top off the tank from overnight evaporation.   It takes about 20 to 40 min. to heat the water in the tank from cold.  Yours will be on the higher end due to the lower voltage and heating element size.   Evaporation increases with altitude and temperature. 


    So, from this if you check your temperature with a calibrated thermometer by adding water with the funnel attached but without filter. Your coffee supplier will tell you the optimum temperature for there coffee for flavor.  It varies a great degree due to different roast and beans.  But is normally below 203. Some as low as 195.  It is set by the thermostat under the top cover. Directions are here:

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