Question about Bunn Pour-O-Matic VPR
The machine needed a good cleaning so I went to it. Half way through I realized I should have taken some pictures so I could identify the wires and get them put in the right place.
The VPR manual is on the bunn.com website. (Free)
*** the following is for information only as all repairs should be performed by a qualified Bunn tech. ***
* The VPR has two heaters in the brewer. There is an element inside the water tank (cylinder) which is wrapped in a warmer blanket which is also heated. (Like and electric blanket)
* There will be one or more warmer "Hot Plates".
* Most VPRs will power up as soon as it's plugged in. In other words there is no On/Off switch (though this may have changed in newer models or called a 'Vacation' switch that turns off all the internal heaters.)
* Each additional warmer plate will have it's own on/off switch.
* Internal heater(s) have thermal fuses on each heater. There may be a 2nd thermal fuse or High Limit on the tank - it looks like a disk with two tabs. The thermal fuses look like diodes that sometimes are enclosed in a plastic tube. There should be continuity on all good fuses. If it's open then replace.
* The element is straight forward. Similar to what you would find in a water heater. Which is basically what this brewer is. Just on a smaller scale.
* There is a bulb style thermostat wired in series with the main heater element. This is should be set to boil the water but it should not boil constantly. If it's always boiling then it's shorted. If it does not switch on when the dial is turned clockwise. Then it's open. Need to replace.
* Okay final note; I'm guessing the real question here is what the wires look like in the real brewer and not a bunch of lines on a paper. Most Bunn brewers come with a schematic (electrical) diagram under the top lid or inside a panel. So I've had that problem myself even though I have an Electronics background. You just have to take your time and follow each wire to the component. It's all there. But again, this should be performed by a Qualified Tech.
Posted on Feb 08, 2018
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Posted on Jan 02, 2017
SOURCE: water not hot enough on bunn vpr
Make sure vacation switch is turned on (preheats water).
See manual here:
Posted on Dec 22, 2009
Your spray head has 5 to 6 little holes depending on the model and year, and it looks like you have scale, calcium or lime blocking them.
Since your model is a VPR pour model, you will have less trouble cleaning it with white vinegar than the permanent water connection type. I use a gallon of vinegar and filters for this.
2 Clean, Rinsed Empty coffee cans
1 Gallon of White vinegar
5 coffee filters
1 Toothbrush, preferrably angled head
Start with your Bunn turned off and place an empty full size coffee can under the pour spout. Now place a filter in the brew basket to catch any fine particles you don't want poured back in the resevoir and heater. You will need to change this filter a few times as the trash starts coming out of your spout.
With the coffee can, brew basket, and a fresh empty filter in place you want to start pouring the vinegar in the tank while catching the water with the coffee can. As it fills with water you will need to dump the can down the drain until the full gallon of vinegar has been poured in the Bunn. Allow the excess water to finish flowing out into the coffee can making sure to leave half the water in the can to pour back into the coffee maker.
By now your tank should be filled with mostly white vinegar, and your coffee can should be at least half full of vinegar as well.
Now you can turn on the lower pot warmer to keep the solution hot and plug your Bunn into the outlet.
Allow 8 to 10 minutes for the heater to heat up and pour the half full coffee can of vinegar into the fill area. Allow the cycle to complete and replace the filter as needed, or if flow begins to slow down.
If your heads are clogged, use the toothbrush to clear the holes as the vinegar is flowing until you see all holes flowing vinegar.
Chunks of trash will dislodge in your heater tank and flow to your spray head, so keep that toothbrush ready.
Do this at least 5 times, then allow the Coffee maker to sit 30 minutes with the heater on to finish dissolving the lime and calcium deposits in the tank.
After 30 minutes start flushing the system with clean water to rinse out all of the vinegar, or until you can no longer smell vinegar in the coffee can.
Posted on Mar 11, 2010
Some people also try adding fresh grounds to brewed grounds, resulting in an overflow. A restricter valve can be used, but a better solution is to simply pour in half the water at a time. This is what people who buy non Bunn filters do to stop overfills.
Posted on Mar 11, 2010
I do apologize but these diagrams are not available. What is the problem with the machine? If you will get the model and code date from the bottom of the brewer and contact customer service, we can help resolve your issue. The machine carries a 3 year warranty and if it is 3 years old or less, it will be replaced at no cost. If it is older than 3 years old, then it will be replaced at a reduced price.
Posted on May 19, 2010
SOURCE: Bunn VPR Series Coffee Maker
This machine has a reservoir that holds about 2.5 pots and keeps them at brewing temperature. Therefore you should pour in 3 pots (with a pot in place under the filter basket) until water flows from the basket. Then, and ONLY then, it is safe to plug in the brewer. If you plug in the brewer BEFORE filling the reservoir you will burn up the heating element and will have to have it replaced.
After the initial filling and heat up (about 20 minutes) you are ready to pour through a pot of COLD water through and brew.
Posted on Sep 10, 2010
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