Brewing
delicious coffee in a BUNN Home Brewer is unlike using any other home coffee
machine. We've done our best to anticipate questions you might have, but you
are welcome to call 800-352-BUNN (2866) for more information.
Frequently Asked Questions
-
Where can I find
the model and date code on my BUNN brewer?
-
Why is my coffee
dripping out very slowly?
-
Why does my
coffee taste weak or bitter?
-
Can I pour cold
coffee back into the reservoir to reheat it?
-
How do I drain my
coffee brewer?
-
Is it safe to
leave my coffee brewer plugged in at all times?
-
What if I don't
plan to use the brewer for several days?
-
Can I purchase an
internal replacement part?
-
What might cause
my coffeemaker to leak?
-
I need
information regarding warranty, repair, and exchange options.
-
I live at a high
altitude. Can I use a BUNN brewer?
-
How can I brew
the best tasting coffee with my BUNN brewer?
-
Can I use the
BT10/BTX stainless steel carafe on any BUNN brewer?
-
Why does my
brewer leak water into the decanter overnight when the lid is left open?
-
How can I preheat
a thermal carafe?
Where can I find the
model and date code on my BUNN Brewer?
The
model and date code are located on the bottom of your unit.
more info >
B, BX, GR, GRX, NHB and NHBX 10-Cup Models
Step
1. Raise the hinged flip-lid (or swivel lid to side if using an NHB). Note: The
post protruding from the screen is connected to a stopper that controls the
flow of water into the tank. When lid is closed and the post is depressed, the
stopper will be raised and water will flow into the tank.
Step
2. Slide an empty brew funnel into the brewer under the warmer switch. Pour one
decanter full of water into the screened area on top of the brewer. Place decanter
on the warmer. Close lid. Wait three minutes to allow the water to flow into
the tank. Repeat this process. When the tank is full, 4 to 6 cups of water will
flow through the funnel and into the decanter.
Step
3. Plug in the brewer.
Step
4. Press the bottom of the vacation switch, located on the lower left side of
the brewer, to the "ON" (lower) position. The vacation switch
controls power to the tank heater. Initially you will have to wait
approximately 15 minutes for the water to reach brew temperature.
Step
5. Empty any water that has collected in the decanter.
B8
and GR8 8-Cup Models
Step
1. Raise the hinged flip-lid.
Step
2. Slide an empty brew funnel into the brewer under the warmer switch. Pour one
pitcher of water (filled to the 48 oz. line) into the screened area on top of
the brewer. Wait two minutes to allow the water to fill the tank. Pour a second
pitcher of water into the brewer. When the tank is full, 4 to 6 cups of water
will flow through the funnel and into the decanter.
Step
3. Close the lid and plug in the brewer.
Step
4. Press the bottom of the vacation switch, located on the lower left side of
the brewer, to the "ON" position. The vacation switch controls power
to the tank heater. Initially you will have to wait approximately 15 minutes in
FORM for the water to reach brew temperature.
Step
5. Empty any water that has collected in the decanter.
BT10/BTX
Models
Step
1. Raise the hinged flip-lid. Note: The post protruding from the screen is
connected to a stopper that controls the flow of water into the tank. When lid
is closed and the post is depressed, the stopper will be raised and 4 to 6 cups
of water will flow into the tank.
Step
2. Slide an empty brew funnel into the brewer. Pour one carafe full of water
into the screened area on top of the brewer (there is no need to have the lid
on the carafe at this time). Place carafe in position on the brewer. Close lid.
Wait three minutes to allow the water to flow into the tank. Repeat this
process. When the tank is full, some water will flow through the funnel and
into the carafe. Leave the carafe in place.
Step
3. Plug in the brewer.
Step
4. Press the bottom of the vacation switch, located on the lower left side of
the brewer, to the "ON" (lower) position. The vacation switch
controls power to the tank heater. Initially you will have to wait
approximately 15 minutes for the water to reach brew temperature.
Step
5. Empty any water that has collected in the carafe.
Why
is my coffee dripping out very slowly?
The
sprayhead may be clogged. Check the round disk (sprayhead) above the brew
funnel. The holes in this part must always remain open. If they are clogged,
remove the sprayhead and clear the holes using a toothpick.
Always
unplug the brewer before deliming or cleaning the sprayhead. The brewer could
be clogged with mineral deposits.
How
to delime your brewer
NOTE
- Unplug the brewer and let it cool down before deliming.
Step
1. Remove the sprayhead by turning it with your fingertips and set it aside.
Step
2. Insert all but two (2) inches of the flexible deliming tool (supplied) into
the sprayhead tube.
Step
3. Slide the tool in and out five (5) or six (6) times to loosen lime in the
sprayhead tube. (You may need to twist, push and use some force when inserting
the tool.) Remove the tool.
Step
4. Prior to replacing sprayhead, pour one decanter of fresh water into the
brewer, position the empty decanter on the brewer, and close the lid.
Step
5. Check the holes of the sprayhead. If plugged with lime, they may be cleared
by using a toothpick. Clean the sprayhead with a cloth and mild detergent.
Rinse the sprayhead with water, then reinstall.
Step
6. Plug in the brewer and allow the water in the tank to reheat before using
(approximately 15 minutes). NOTE: The frequency of deliming depends on the
mineral content of your water.
Why
does my coffee taste weak or bitter?
The
taste of your coffee can be caused by all or any combination of the following:
-
Variation in the
mineral or chemical content of the water (For example, high sulfur content
water will carry a strong taste).
-
Variation in
brands, mixes, quantity, or quality of coffee.
-
Old or
improperly stored coffee can easily taste stale. Coffee should be stored
in a clean, dry place away from heat registers and vents or extreme cold
for maximum freshness.
-
Size of the
coffee grind affects the ability of the brewer to extract the oils that
add flavor to your coffee.
-
Missing
sprayhead. If the sprayhead is missing the grounds will not be soaked
properly. To request a new sprayhead, use the form in the Parts and Services area of this
website or call 800-352-BUNN (2866).
-
If you have soft
water or drink decaffeinated coffee, you may need a flow restrictor to
replace the sprayhead you are currently using. This will slow down the
flow of water, giving you a stronger flavor of coffee. To request a flow
restrictor, use the form in the Parts and Services area of this
website or call 800-352-BUNN (2866).
Can
I pour cold coffee back into the reservoir to reheat it?
This
is not recommended since it can cause damage to your coffee brewer.
How
do I drain my coffee brewer?
Unplug
the brewer, place an empty decanter on the warmer plate and pour cold water
through to lower the water temperature. Wait 15 minutes for brewer to cool.
Remove
the glass decanter and filter basket from the coffee brewer.
Remove
the sprayhead (the round disk above the brew funnel) by turning
counterclockwise.
Grasp
the brewer and carefully turn it upside down over a sink. Most of the water in
the tank will flow from the sprayhead opening but some water may flow from the
area around the top lid. Continue tipping the brewer until the flow of water
ceases. Reinstall
the sprayhead when all of the water has drained from the brewer. Securely
tighten it by turning clockwise. DO NOT plug in until you repeat Initial Brewer
Set-Up Instructions.
Is
it safe to leave my coffee brewer plugged in at all times?
Yes.
This brewer has a specially designed tank to keep the water at the proper
temperature. The constant supply of hot water assures the correct method of
brewing in less than three minutes.
What
if I don't plan to use the brewer for several days?
If
you won't be using your brewer for several days, you can position the main
power switch (on the side) to "off". This will completely shut off
the brewer.
Can
I purchase an internal replacement part?
For
your safety, under UL requirements, internal parts can only be installed by
factory trained personnel. Seals, gaskets, warmer plates, and warmer plate
switches are the only repairable parts. To ask a service-related question, use
the form in the "Parts and Services" area
of this website or call 800-352-BUNN (2866).
What
might cause my coffeemaker to leak?
Leaking
can be the result of one or more of the following causes:
-
Improper
maintenance or care.
-
Normal wear and
tear.
-
Deterioration of
seals or gaskets within your brewer that naturally occur over time.
-
Accumulation of
mineral deposits from your water. Clean your brewer regularly.
I
need information regarding warranty, repair and exchange options.
To
obtain more information, use the form in the "Parts and Services" area
of this website or call 800-352-BUNN (2866) to speak with a Customer Support
representative. Please be prepared with the model name of your coffeemaker and
the serial number located on the bottom of your unit.
I
live at a high altitude. Can I use a BUNN brewer?
Yes.
BUNN makes models for altitudes of 4,000 ft. and above. The "D" in
the model name indicates that it is for high altitude applications.
How
can I brew the best tasting coffee with my BUNN brewer?
BUNN
recommends you DO:
-
Keep coffee
stored in a clean, dry place away from heat registers and vents or extreme
cold for maximum freshness.
-
Use enough
coffee (one tablespoon per cup or about 1 1/2 inches of coffee in a
flat-bottom filter)
-
Make sure you
use good-tasting water. Check your water source for softened or hard
water. If necessary, run your water through a water treatment filter.
-
Use the correct
coffee brewing equipment for maximum performance. We recommend a quick
brew time, using a brewer that keeps water at 200° Fahrenheit (the ideal
temperature) and mixes the grounds for full flavor extraction.
-
Use a thermal
carafe if you plan to hold coffee more than 20-30 minutes. Coffee can be
held in a thermal carafe for up to 60 minutes without losing flavor.
-
Make sure to
clean your glass decanter every day.
-
Use only quality
controlled paper filters designed to fit your brewing equipment.
-
Dispose of
filter and grounds immediately after brewing to prevent drip-through of
unwanted flavors trapped in used coffee grounds.
-
Clean your
brewing equipment at least once a week (especially the sprayhead area).
BUNN
recommends you DON'T:
-
Mix fresh brewed
coffee with previously brewed coffee as this will dilute the taste and
affect the flavor of the whole pot.
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Brew over
previously used coffee grounds because all of the flavor has already been
completely extracted.
-
Re-heat for
serving any coffee with a temperature below 175° F
-
Serve coffee
brewed with beans or ground coffee past the freshness date.
-
Let coffee
"bake" on a brewer. Twenty to 30 minutes is the maximum time allowable
for an open pot to deliver a perfect cup of coffee.
-
Serve coffee in
pots or decanters that haven't been properly cleaned, since acids and
other organic materials can taint even the best brewed coffee.
Why does my brewer
leak water into the decanter overnight when the lid is left open?
Our
10-cup brewers (NHB, NHBX, B10, BX, GR10, GRX, BT10 and BTX) are not designed
to hold water in the upper water basin for an extended period of time, such as
overnight.
Can
I use the BT/BTX stainless steel carafe on any BUNN brewer?
No,
the stainless steel carafe can only be used with the BT10/BTX Brewer.
How can I preheat a
thermal carafe?
To
preheat the thermal carafe, fill the carafe with hot water for approximately 30
seconds. Empty before brewing coffee into carafe. Preheating will increase the
time your coffee will stay warm.
