instructions - Brewcraft USA

instructions - Brewcraft USA
The finest craft beers are
made from hops, malted grain
and yeast. The Grainfather
offers you infinite
possibilities just like the
professional brewer.
This instruction booklet will
guide you through everything
you need to brew your first
beer from grain at home.
Please also take a moment to
visit our website and YouTube
channel for supplementary
instructional material.
Safety information................................................................... p.1
Technical specifications......................................................... p.1
Anatomy/Schematics............................................................. p.2
Discharge pipe........................................................................... p.3
Control box................................................................................. p.3
Inner basket................................................................................ p.4
Plumbing the counter flow wort chiller........................... p.5
OperatiNG instructions
Controller operation ............................................... p.7
Element variation switch...................................... p.7
Making the beer........................................................ p.8
Mashing....................................................................... p.9-10
Sparging....................................................................... p.11
Boiling........................................................................... p.12
Chilling......................................................................... p.12
Cleaning....................................................................... p.13
Additional contents................................................ .p.14
Brewing calculations............................................... p.15
Completing your brewery setup......................... p.16
Glossary, legality and guarantee......................... p.17
The Grainfather has been developed for small batch beer brewing. Please only
use it for its intended purpose.
General Safety Notes
• Read all instructions before using the Grainfather.
• If the supply cord is damaged, it must be replaced by the manufacturer, its
service agent or similarly qualified persons in order to avoid a hazard.
• This appliance is intended to be used in household and similar applications
such as staff kitchen areas in shops, offices and other working environments;
farm houses and by clients in hotels, motels and other residential type
environments; bed and breakfast type environments; catering and similar
non-retail applications.
• Always unplug the unit before cleaning, during storage or in the event of
a fault.
• To protect against fire, electric shock and injury, do not immerse cord/plugs
in water or other liquid.
• The boiler, lid and pipes reach temperatures up to 100°C (212°F) and
therefore must be handled with caution. Never move the unit while it is
in operation.
• The handle on the side is only meant for transportation once the Grainfather
is empty and in a cooled, non-use state.
• Save these instructions for future reference.
Please protect our environment by properly disposing of the unit. Electronic
devices should not be disposed of as household refuse. Take note of the
recycling symbol on any plastic parts before disposing. Please use proper
facilities when disposing of the unit. More information regarding this can be
found from your local or district municipal administration.
total weight
10 kg
30 L
733 mm x 386 mm
Steel grade
6 Watt, 1,800 RPM
NZ/AU/UK 220-240V 2,000 Watts
US/CANADA 120V 1,600 Watts
8. Tempered
glass lid
9. Lifting handle
1. Recirculation pipe
2. Lid clips
(for use when attaching
Alchemist Series Pot Still
attachments for distilling)
10. Inner basket
11. Control box
12. Top perforated plate
3. Discharge pipe
13. Assembled overflow pipes
14. Boiler element plug
4. Boiler body
15. Pump plug
5. Pump
16. Thermometer probe
17. Bottom perforated plate
6. Pump cover
18. Thermometer inlet
20. Overflow inlet
24. Knob
21. Overflow top pipe
25. Barbed nipple
22. Overflow bottom pipe
23. Overflow bottom nut
19. Electric element
7. Pump filter
26. O rings
27. Hose clamps
28. Screw & nut
29. Pump filter
32. Tap adaptors
30. Silicone reticulation hose
33. Recirculation pipe O rings
31. Brass cap
34. Overflow pipe lids
unpacking and assembling the grainfather
Unpack the Grainfather from the box. Lay out all of the components.
Tools required for assembly: Phillips head screwdriver.
Assembling discharge pipe
Assembling control box
Cord threaded
through handle
Unpack the control box (11) from its carton and lock it in place. The
studs on the back of the control box go into the holes in the metal
bracket. Feed the cords from the control box through the handle.
Unpack the discharge pipe (3). Drop it down through the holed bracket
on the side of the boiler. Push the bottom of this pipe into the fitted
silicone tube on the pump outlet.
Attach the hose clamp (27) and tighten it around the silicone hose.
Now take the screw and nut (28) and connect this to the top bracket to
secure the discharge pipe to the bracket.
WARNING: Never operate the unit without first fitting the
brass cap (31) or recirculation pipe (1) to the discharge pipe (3).
Pump socket
Heating socket
Plug the cord from the pump into the pump inlet underneath the control
box, do the same for the plug coming from the boiler. The plug exiting
the pump is the pump plug, the plug exiting the boiler base is the heating
element plug.
installing THE
install BOTTOM
Fit the pump filter (29) into the cup inside the base of
the boiler body (4). Push in until it is secure.
Fit the thermometer probe (16) into the
thermometer inlet (18).
install BOTTOM
Place the overflow bottom pipe (22) into the hole
in the bottom perforated plate (17). Secure the
pipe by screwing on the overflow bottom nut (23).
Push the bottom perforated plate (17) all the way down
into the inner basket (10). Push down on the sides to
ensure it is level.
install TOP
Push the overflow top pipe (21) over the overflow
bottom pipe (22). Make sure the wire springs are
facing down.
Plumbing the Counter Flow Wort Chiller
Connection D
Connection A
cold wort out
hot wort in
Connection B
Connection C
cold tap water in
tap water out
Your counter flow wort chiller will come
with 4 hoses already connected to
connections A B, C and D.
Note: The cold water from your tap
flows one way and the hot wort flows
the other way.
the cooler
Kitchen tap
Laundry tap
Chiller tap
Outdoor tap
20 mm BSP
Tap open
Tap closed
7 mm hose tail
From the bag with the chiller connections, place one of
the O rings (26) over the bottom end of the barbed nipple.
Take hose clamp from connection D (but leave hose
attached). Take the free end of hose A (shortest hose) and
push hose clamp (taken from connection D) onto the end.
Push the barbed nipple (25) through the hole in the plastic
knob (24). Push hose A with the hose clamp onto the
barbed nipple with plastic knob and secure.
Make sure you are brewing within reach of a water
source. Follow the above diagram to set up the tap
adaptors. Connect the end of hose B to the 7 mm
(0.3 in) hose tail (32).
When the wort is being chilled. Adjust the tap to
change how fast the wort flows through the chiller.
The slower the wort runs through, the cooler it will
come out.
OPERATING Instructions
It is important to clean and sterilise the
equipment before brewing
Clean the Grainfather before the first use to remove any processing oils used in manufacturing. Fill the Grainfather with 7.5 L (1.98 US Gal) of water, add 30 ml (1 oz)
of the Grainfather High Performance Cleaner. This cleaner is suitable for cleaning both stainless steel and copper and will remove proteins and other buildup from
brewing. Its high strength also makes it perfect for doing the first clean to get rid of any manufacturing oils and grease.
Fit the assembled mash basket with top perforated plate, connect the counter flow wort chiller to the Grainfather and recirculate this through the pipework at 50°C
(122°F) for 15 minutes. Remove the chiller and fit the brass plug to the pump discharge pipe.
Empty out the cleaning solution then add 7.5 L (1.98 US Gal) of water. Circulate this through the pipework and chiller. Ensure all surfaces have been rinsed with clean
water before you start your brew.
Boil ‘On’
Pump ‘On’
Pump ‘Off’
Mash ‘On’
Temperature display
1.Push the switch to the ‘Mash’ position.
2.Press the ‘Set’ button and hold down for 3 seconds.
3. Use the up/down arrows to input desired temperature.
4.Push and hold the ‘Set’ button again for 3 seconds. The
screen will display the temperature the unit is at. Once
it reaches your input temperature it will maintain that
temperature until reset.
1. Set the switch to the boil position. The device will bypass the
temperature controller and come to the boil.
2. When the unit comes to the boil it may beep. If so, you can
stop the beeping by pressing the ‘Power’ button.
3.Be very attentive as the mash comes to the boil, as you need
to stir the “hot break” into the wort to ensure it doesn’t boil
over. This helps remind you to stir and pat down any foam
during the initial stage of boiling to prevent a boil over.
500 Watts
2000 watts
Mounted in the plastic base is the element
variation switch. This switch controls the heat
supplied by the element. This switch should be set
to ‘Normal’ except during the mash stage.
When the switch is set to ‘Mash’ the element is reduced
to 500 watts.
When set to ‘Normal’ it runs on 2,000 watts.
Set the switch to ‘Mash’ once grain is added and you are
wanting to keep the temperature very stable. Switch to
‘Normal’ during “ramp up” between rests and when you
are looking to boil.
This feature helps maintain a steady temperature
in the Grainfather during mashing. Because we
have used a very robust element to spread the
heat evenly to avoid scorching, there is a lot of
latent heat in the element when it reaches its input
temperature. Using just 500 watts to maintain the
temperature reduces any temperature overrun.
making the beer
read before starting YOUR brew
Before starting, read page 11 first to CHOOSE YOUR method of sparging.
If you are doing a small Grain bill under 4.5 Kg (9.9 lb), first read the
instructions on page 14 before doing the mash.
add water
to the boiler
Set mashing
(Grain weight in kg x 2.7) + 3.5
volume of mash water to add to boiler
Use this calculation to work out how much water you
need for the mash.
Replace the inner basket (10) making sure the overflow
top pipe (21) is fully extended.
Add the required amount of mash water to the boiler
body (4). Make sure the inner basket (10) is removed
so that the scale on the side of the boiler is visible.
Input the temperature you want to mash at making
sure the ‘Mash’/‘Boil’ switch is in the ‘Mash’ position.
Ensure the element variation switch is in the “Normal”
cover overflow
top pipe
Place one of the overflow pipe lids (34) on the opening
of the overflow top pipe (21). This stops any grain from
entering the pipe.
add grain
Once the control box indicates the correct mash
temperature (from your recipe), slowly add the grain to
the inner basket (10), stirring well to avoid any dry clumps.
install top
perforated plate
install overFlow
Recirculation pipe
Fit the top perforated plate (12) until it reaches the top
of the grain bed, it should just rest against the grain, do
not compress the grain.
Attach the
recirculation pipe
Fit the overflow inlet (20) onto the overflow top pipe
(21) and press down until it fits into the hole in the top
perforated plate (12).
Turn on
the pump
Take one of the recirculation pipe O rings (33) from
the small clear bag and place it over the bottom of the
recirculation pipe (1) and push the plastic knob down
over the O ring. Then put the silicone reticulation hose
(30) over the barbed end of the recirculation pipe.
Place the tempered glass lid (8) on the boiler and screw
the recirculation pipe (1) onto the discharge pipe (3).
Make sure it is threaded on correctly. The silicone hose
should go through the hole in the glass lid and rest on
the perforated plate.
Switch on the pump. The wort flowing through the
recirculation pipe should fill up on top of the top
perforated plate.
The grain will be at a colder temperature than the water,
it is normal for the temperature to drop. It will heat back
up to temperature. Once it heats back up to temperature
switch the element variation switch to ‘Mash.’
When mash time is complete set the
element variation switch to ‘Normal’ and
ramp the temperature up to 75°C (167°F).
Continue to recirculate for 10 minutes.
heating urn
stainless steel
Sparge option 2 is an option if you have a stainless steel
fermenter. Before starting the mash, bring the required
amount of sparge water to the boil in the Grainfather.
Then use the recirculation pipe to pump this water
into the fermenter. Seal the fermenter and when you
are ready to sparge the water should be cooled to 75ºC
(167ºF). To moderate the water temperature in the
fermenter, boil more water in a kettle and add.
Sparge option 1 is a separate heating vessel to heat up
the sparge water. Keep in mind that you will need the
Sparge water heated while you are mashing.
block discharge
After the 10 minute mash out,
switch the pump off, remove the
recirculation pipe (1). Block the
discharge pipe with the brass cap
(31). This prevents wort exiting the
discharge pipe in case the pump is
accidently switched on.
Fit the lifting handle (9) into the holes of the
inner basket. Lift the inner basket and twist
it 90 degrees to rest it on the support ring
located at the top of the boiler.
(28 - mash water volume) + (grain bill kg x 0.8)
sparge water volume
Use this calculation to work out how much sparge
water you need (assuming you want to collect 28 L
(7.4 US Gal) preboil).
Lock basket
and sparge
Allow the mash liquid to drain into the boiler, gently press the top perforated
plate down (12) until it comes to rest against the grain. Gently pour the
prepared sparge water over the grain. Keep the water level approx 10 mm
(0.4 in) above the plate at all times for an even sparge. NOTE: Discard the
used grain responsibly, it can make great compost or chicken feed.
SECOND grainfather
Switch to boil
After all of the sparge water has drained through the grain,
remove the basket and set the controller
to ‘Boil’.
Make sure the element variation switch is set to ‘Normal.’
add hops and
take readings
Give the wort a good stir before taking the preboil
SG reading.
Purchase a second boiler and make a second brew
concurrently. Once you have finished mashing your
first brew, you can use the mash basket in your second
boiler and start a second brew. This way you don’t need a
second grain basket or counter flow wort chiller and can
make two different brews in about six hours.
The controller will read ‘0’ then ‘HH’ when it
reaches boil.
As the wort comes to a boil, the proteins will foam
up. You will need to gently stir the foam for 5 - 10
minutes until it stops foaming.
While the wort boils, add your hop additions as
instructed on your recipe. Boil times are usually
between 60 - 90 minutes.
Connect the
wort hose
Connect the tap
water hose
pump wort into
To drain
Connect to tap
Take an OG reading
of cold wort
After boiling refit the tempered glass lid (8). Rest the counter
flow wort chiller on the glass lid. Screw the plastic knob (24)
onto the discharge pipe (3). Insert the ‘cold wort out’ hose
(connection D) into the hole in the tempered glass lid (8). Turn
the pump ‘On’ to recirculate the wort back into the boiler to
sterilise the inside of the coil. Recirculate for at least 5 minutes.
The two long hoses on the chiller (connection B
and C) are the cooling water hoses. Connect hose
B to your tap adaptor. Hose C is where the water
drains out. This will come out hot as the water
flows through the chiller.
Turn the cooling water on. Once the ‘cold wort out’ hose
runs cold switch the pump ‘Off’ and place it inside the
clean and sterilised fermenter. Adjust the chiller tap to
control the temperature of the wort flowing into the
fermenter. Always try to keep the fermenter sealed. Add
yeast as instructed on recipe.
you will need
empty the trub,
add water and
through the
The Grainfather High Performance Cleaner is a CIP
cleaner specially formulated to work with hard and soft
metals that the Grainfather and the chiller both have.
Empty out the trub by tipping it down a drain. Remove
the pump filter and rinse it, replace it again after rinsing.
Fill the boiler up with 7.5 L (1.98 US Gal) of water. Add
30 ml (1 oz) of cleaner.
clean water
Connect the counter flow wort chiller as you would
normally. Set the controller temperature to 55ºC (131ºF).
Place the ‘cold wort out’ (connection D) hose from
the chiller through the hole in the glass lid and let the
cleaner recirculate through the chiller for 5 minutes.
Empty the cleaner and fill the
boiler with clean cold water. Scrub
the bottom and sides of the boiler
with a soft brittle brush. Make sure
to recirculate water through the
chiller and recirculation pipe.
Do not leave any water sitting in
the copper pipe of the chiller. Dry
all surfaces before storing.
After 5 minutes remove the chiller and connect the
recirculation arm. Recirculate the cleaner for another
10 minutes.
additional information
final volume in
grain bill sizes
The Grainfather can handle grain bills of up to 9 kg (19.8 lb).
If you collect 28 L (70.4 US Gal) after sparging,
you will lose between 8 and 10% during
boiling and a further 2 L (2 US Gal) in the
Grainfather leaving you with approximately
23 L (6.1 US Gal) in the fermenter.
If you collect too
much wort
Then you can boil for longer. This will mean you
will boil off more water, giving you a higher OG.
If you don’t collect
enough wort
Top up the boiler with water.
The longer you boil for the more water you
will boil away. This will give you a higher
OG, meaning you will have a higher ABV
percentage beer, but less volume of it.
small grain bills
Below 4.5 Kg (9.9 lb)
If you are brewing a small grain bill below 4.5 kg (9.9 lb),
you will need to add a little more mash water.
1. Fill the boiler with the same amount of initial mash
water based on the calculation of 2.7 L (2.7 US qt) of
water to 1 Kg (2.2 lb) of grain.
2. Add the grain and mix it in.
3. Fit the top perforated plate and overflow pipework.
Depending on how small your grain bill is, the top
perforated plate may not go down all the way and rest
on top of the grain. This is fine, make it go down as far as
it can.
4. Fill the unit up with additional water until the water
level is just above the perforated plate. Take note of the
additional water you used for when you do your
sparge calculation.
The Grainfather is also great for making whiskeys,
and other spirits from grain. Once you have made
your spirit wash and fermented it, the Alchemist
Series Alembic Condenser and Dome Top can
be fitted to the top for distilling. Instructions for
distilling are included with the alembic units. The
clips on the boiler are for securing the Alembic
Dome top and condenser.
Be aware that in New Zealand it is legal to distil
your own spirits and liqueurs for personal
consumption. However please note that in
certain countries alcohol distillation may be
illegal and you may require a licence. Ask for
advice or contact your local Customs &
Excise Department.
It is important that the grain used for brewing is crushed to
the correct consistency. If the grain is not crushed enough, not
enough of the starches will be available for the enzymes to work.
If the grain is over crushed, water will not be able to correctly flow
through the grain and this can cause a ‘stuck’ mash.
Grain Bill
The following instructions will show you
how to work out the efficiencies and alcohol
percentage of the beer.
This example is based on a grain bill of 6 kg
(1.58 lb) and 28 L (7.39 US Gal) in the boiler
before starting the boil.
You will be taking two gravity readings with
every recipe you make.
Preboil SG - reading after sparging.
OG - reading of wort after boiling and what you
get in your fermenter.
Working out
In this example the pre-boil SG is 1.051
SG x preboil volume = A
grain weight x 290 = B
A x 100 / B = efficiency
51 x 28 = 1428
After the beer has finished fermentation (when
the airlock stops bubbling), you can take the
FG reading. This is your final gravity reading
and you can use this to work out the alcohol
percentage of the beer.
(OG - FG) x 131.25 = ABV%
6 x 290 = 1740
1428 x 100 / 1740 = 82%
When working out your OG efficiency, simply
substitute in the volume of beer you get into the
fermenter, and also the SG reading that you get
from the wort in the fermenter.
Grain weight and abv
In general the ABV of the beer will be similar to the
kilograms/pounds of grain. However the ABV will depend
on how you mash and ferment, but this can be used as a
quick guide to think about before making a beer.
5 kg (1.32 lb) Grain
5% ABV
6 kg (1.58 lb) Grain
6% ABV
7 kg (1.85 lb) Grain
7% ABV
Calculating standard drinks
Amount of drink in litres (Vol) x ABV (%) x density of ethanol
at room temperature (0.789).
For 500 ml (16.9 oz) of beer which is 5% ABV.
0.5 x 5 x 0.789 = 1.97
This is approximately two standard drinks.
(1.051 - 1.011) x 131.25 = 5.25%
please be a
responsible host
Always calculate your beer’s alcohol
percentage and make your guests aware of
this. Drink high alcohol percentage beer
with caution.
Advise any friends that you are sharing your
drinks with that the alcohol content of the
beer may be higher than they are used to.
completing your brewery
Stainless Steel Fermenter
Perfect for fermenting your wort. It is made of
high grade 304 stainless steel, designed with
a seamless interior making it easier to keep
clean and sterile while fermenting. It will look
great sitting next to your Grainfather.
Still Spirits Alchemist Series
Alembic Condenser
and Dome Top
Turn the Grainfather into a still to distil fine craft
whiskeys, vodkas or other spirits made from grain
using the Grainfather.
The ultimate way to serve your beer.
Nothing is more professional and
satisfying than having your own
craft beer on tap and saving hours
on bottling time!
A full, high quality CO2
cylinder to fit the cradle on
the rear of your Kegerator.
Finish the Kegerator off nicely
and get pouring!
ABV: The measure of Alcohol by Volume.
Beta Glucan Rest: 36-45°C (97-113°F). The beta-glucanases/cytases enzymes which are part
of the cellulose enzyme family will carve up the beta glucans in unmalted grains like wheat,
rye, oatmeal and unmalted barley. If these gums aren’t broken up then the mash can become
gummy and cause a stuck mash.
Counter Flow Wort Chiller: A heat exchanger that has the wort flowing one way and the
cooling water flowing the other. The heat transfers from one liquid to another.
EBC: European Brewing Convention, Lovibond Scale. Used to determine the colour of a beer.
The higher the number the darker the beer.
Enzymes: Complex proteins that break down starch into simple and complex sugars. Different
enzymes activate at different temperatures. The mash temperature is adjusted to activate
the correct enzymes to leave a range of simple and complex sugars in a mash. Yeast can only
consume relatively simple sugars so more complex sugars formed in the mash will result in a
higher FG and more body in the beer. Simple sugars get converted to alcohol.
Ferment: The action of yeast converting malt to alcohol and carbon dioxide.
Fermenter: A vessel to hold the brew. This can be either plastic, glass or stainless steel.
Final Gravity (FG): The measurement of gravity at the end of fermentation.
Grain Bill: The grains used in a recipe. The bigger the grain bill the higher the alcohol
Hop Addition: The quantity and type of hops added to a brew. Hop addition time is expressed
as minutes from the end of the boil.
Hydrometer: A glass float with a graduated scale. If the liquid is water at 20°C (68°F) then it
will measure 1.000. If the liquid contains sugar (malt) then the hydrometer will float higher in
the liquid and the measurement will be higher than 1.000. During fermentation the sugars are
converted to alcohol and this reduces the gravity.
IBU: International Bitterness Units. Used to determine the bitterness level of a beer.
Mash: The mixture of grain and water. This is held at different temperatures throughout the
process to activate different enzymes.
Mash out: This is to ramp the temperature up to 75°C (167°F) and allow the wort to recirculate
for 10 minutes. This denatures the enzymes and prepares the grain for sparging.
Original Gravity (OG): The measurement of gravity at the beginning of fermentation.
Protein Rest: 45–55°C (113-131°F). Some European malts are not fully converted by the
malthouse. If they aren’t the mash will benefit from a rest in this range. This helps improve the
head retention and avoid chill haze.
Refractometer: An extremely useful tool to establish the Specific Gravity (SG) of the wort
before and after fermentation. This instrument measures the refractive index of the sugars
in the wort/beer. You only need a few drops so it is quicker and more convenient than using
a hydrometer.
Saccharification Rest: 55-72°C (131-162°F). The most used temperature for the
saccharification rest is 67°C (153°F). There are two enzymes in play here. The Alpha enzyme
65–72°C (149-162°F) and the Beta enzyme 55-65°C (131-149°F). Both favour different
temperature ranges. Generally the higher the temperature the more unfermentable sugars in
your mash, which increases the body.
Sparge: The action of rinsing the grain with hot water after mashing. This ensures all of the
sugars are extracted from the grain.
Specific Gravity (SG): The measurement of the density of a liquid. Measured with a
Step Mashing: This is to mash in separate stages. The steps generally start with a
protein rest and end with a saccharification rest. This method is used to achieve different
characteristics in a beer.
Trub: This is the mixture of proteins and hops that remain in the boiler after the wort is
pumped out through the chiller.
Wort: The liquid formed when water and grain are combined and held at the correct
temperature for the enzymes to produce malt.
Whirlpool: After boiling has finished the wort can be stirred gently in one direction to create
a whirlpool so that hops and trub collect in the centre of the boiler. The wort can then be run
off into the fermenter leaving the trub behind. This isn’t really necessary with the Grainfather
as the pump filter prevents this from being pumped into the counter flow wort chiller.
It is legal in most countries to brew your own beer at home, however it is illegal to sell any alcohol without
a valid liquor license. Please drink responsibly and do not give alcohol to minors.
Guarantee Conditions
• Statutory guarantee conditions apply. The guarantee period is 12 months from the date
of purchase.
• A valid purchase receipt will need to be presented for any guarantee claims.
• No guarantee will be given for any defects due to non-compliance of the operating instructions,
improper handling and/or treatment of the unit.
• Guarantee claims are excluded where any work has been performed on the unit by unauthorised parties.
Should your product display any defects in the guarantee period, please contact us. For guarantee claims
return the product to the dealer/agent of purchase.
Please also get in contact with us and let us know what you think of this product by emailing our product
development team at
Reorder: 72655
Version: 1
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