GRAINFATHER G303 Connect Electric All Grain Beer Brewing System Instruction Manual
- June 11, 2024
- GRAINFATHER
Table of Contents
G303 Connect Electric All Grain Beer Brewing System
Product Information
The Grainfather G303 is a brewing system designed to make up to
40 pints of beer at a time. It comes with a power cord, controller,
and boiler body and has a voltage rating of 220V for North America.
The system is compatible with specific power supply sockets that
are listed in the user manual. The G303 should only be used
indoors, in an upright position, and overseen by trained personnel.
It is advisable to install a residual current device (RCD) with a
rated residual operating current not exceeding 30 mA for safety
reasons. The A-weighted sound pressure level of the appliance
should be below 70 dB.
Product Usage Instructions
-
Check the unit rating label for the voltage to ensure that it
is a North America 220V product. -
Read all instructions and safety information before using the
Grainfather G303. -
Ensure that the power cord, controller, and boiler body are
designed to be used together with a 220V supply. Using any of these
components with another product may result in hazards and equipment
damage. -
Refer to the socket guide in the user manual to ensure that the
brewing system is compatible with the power supply socket being
used. -
Install the G303 in an upright position in a location overseen
by trained personnel. -
It is advisable to install an RCD with a rated residual
operating current not exceeding 30 mA. -
Always unplug the unit before cleaning, during storage, or in
the event of a fault. -
Do not immerse cord/plugs in water or other liquid to protect
against fire, electric shock, and injury. -
Refer to the enclosed advice for cleaning and storing your
G303.
CHEERS, NICE TO MEET YOU
G303 INSTRUCTION MANUAL
G SERIES
I’LL CHANGE YOUR LIFE 40 PINTS AT A TIME
02
G SERIES
THANK YOU FOR CHOOSING THE GRAINFATHER G303
Get started by following these instructions on how to assemble and use your G303. We recommend reading the following safety information before use. Please also find enclosed, advice for cleaning and storing your G303.
WARNING! (NORTH AMERICA 220V ONLY)
Please check your unit rating label for the voltage. If your unit is a North
America 220V product, the power cord, controller and boiler body included in
the box are designed to be used together with a 220V supply. Using any
of these components with another product may result in hazards and equipment
damage.
SOCKET GUIDE (NORTH AMERICA 220V ONLY)
POWER SUPPLY SOCKET
DESCRIPTION
COMPATIBILITY
NEMA 6-15R NEMA 6-20R
3-pin workshop and power tools supply.
Brewing system is compatible using power cord supplied in-box.
NEMA L6-20R NEMA 10-30R NOT SUITABLE
3-pin workshop and power tools supply.
Brewing system is compatible by using an adapter that includes a ground connection and has appropriate electrical certification.
3-pin laundry dryer supply, most common
installation prior to 1996.
This power supply socket is NOT SUITABLE for use with the brewing system. This
socket
provides hot-hot-neutral connections. The brewing system requires a ground
connection to perform safely in the event of an electrical fault.
NEMA 14-30R NEMA L14-30R
4-pin modern laundry dryer supply, commonly
installed after 1996.
Brewing system is compatible by using an adapter that includes a ground connection and has appropriate electrical certification.
NEMA 14-50R NEMA 14-60R
4-pin electric oven supply.
Brewing system is compatible by using an adapter that includes a ground
connection and has appropriate electrical certification.
03
SAFETY INFORMATION
1. Read all instructions before using the Grainfather G303.
2. If the supply cord is damaged, it must be replaced by the manufacturer,
its service agent, or a qualified person to avoid a hazard.
3. This appliance is intended to be used in household and similar
applications such as staff kitchen areas in shops, offices, and other working
environments; farmhouses and by clients in hotels, motels and other
residential type environments; bed and breakfast type environments; catering
and similar non-retailed applications.
4. The appliance is for indoor use only.
5. The appliance is not suitable for installation in an area where a water
jet could be used.
6. The appliance must not be cleaned by a water jet.
7. The appliance must be in an upright position at all times when in use.
8. The appliance is only to be installed in locations where it can be
overseen by trained personnel.
9. The installation of a residual current device (RCD) having a rated
residual operating current not exceeding 30 mA is advisable.
10. The A-weighted sound pressure level of the appliance should be below 70
dB.
11. Always unplug the unit before cleaning, during storage or in the event of
a fault.
12. The boiler, lid and pipes may reach temperatures of up to 100°C (212°F)
and therefore must be handled with caution. Never move the unit while it is in
operation.
13. Access of the service area is restricted to persons having knowledge and
practical experience of the appliance. The maximum and minimum ambient
temperatures for normal use of the appliance is: 40°C (104°F) to -20°C (-4°F).
14. To protect against fire, electric shock, and injury, do not immerse
cord/plugs in water or other liquid.
15. Do not boil dry. See warning note on page 14.
04
THE FOLLOWING STATEMENT APPLIES TO GRAINFATHER PRODUCTS SOLD IN EUROPE:
· This appliance can be used by children aged from 8 years and above and
persons with reduced physical, sensory or mental capabilities or lack of
experience and knowledge if they have been given supervision or instruction
concerning use of the appliance in a safe way and understand the hazards
involved.
· Children shall not play with the appliance. Cleaning and user maintenance
shall not be made by children without supervision.
THE FOLLOWING STATEMENT APPLIES TO GRAINFATHER PRODUCTS SOLD IN THE UNITED
KINGDOM:
· This appliance can be used by children aged from 8 years and above and
persons with reduced physical, sensory or mental capabilities or lack of
experience and knowledge if they have been given supervision or instruction
concerning use of the appliance in a safe way and understand the hazards
involved. Children shall not play with the appliance. Cleaning and user
maintenance shall not be made by children without supervision.
· Means for disconnection must be incorporated in the fixed wiring in
accordance with the wiring rules.
· The fixed wiring insulation must be protected, for example, by insulating
sleeving having an appropriate temperature rating.
THE FOLLOWING STATEMENT APPLIES TO GRAINFATHER PRODUCTS SOLD IN AUSTRALIA AND
NEW ZEALAND:
· This appliance is not intended for use by persons (including children) with
reduced physical, sensory, or mental capabilities, or lack of experience and
knowledge, unless they have been given supervision or instruction concerning
use of the appliance by a person responsible for their safety.
· Children should be supervised to ensure that they do not play with the
appliance.
NOTE: Further to the safeguards listed above, we do not recommend the use of
this product by children. Not following the safety information above could
result in serious injuries and may void your warranty.
ANATOMY DIAGRAM
& PARTS LIST
1. Recirculation pipe
2. Safety valve
3. Spring & ball for safety valve
4. Ball valve
16. Silicone hose
17. Glass lid
18. Support ring retainer
19. Support ring
24. Tap adapter set
25. Lifting bar
26. Grain plate
5. Discharge pipe
20. Controller
6. Pump cover 7. Pump
8. Top/bottom pump silicone tubes with fixing rings
9. Pump inlet pipe
21. Heating element plug
22. Power plug
23. Pump plug
10. Thermowell
11. Thermowell nut
12. Filter silicone cap
13. Filter 14. Filter silicone insert 15. Inlet pipe nut
NOTE: The full spare parts list for the G303 is available online: help.grainfather.com
27. Grain basket
28. Counterflow chiller
05
PRE-BREWING ASSEMBLY
Before use, we recommend cleaning your G303 and all of its components using the Grainfather High Performance Cleaner. For detailed cleaning instructions, see page 16.
2. ATTACHING THE CONTROLLER
Feed the temperature probe cord that is attached to the bottom of the
controller (20) through the handle of the G303 as shown below. Fit the lugs at
the back of the controller into the holes on the bracket and sit the
controller on the cradle.
1. INSTALLING THE FILTER With the filter silicone insert (14) and filter
silicone cap (12) already fitted, install the filter (13) into the boiler body
by pushing the silicone insert into the inlet pipe nut (15).
Hole needs to face down
20
14
15
12
13
Temperature probe cord threaded through handle
06
Lugs fit onto the G303 bracket
Then, insert the temperature probe into the thermowell (10) that is located at
the bottom of the G303 as shown in the image below.
10
Insert the pump plug (23) and the heating element plug (21) into the relevant sockets on the bottom of the controller as shown below.
23
21
22
3. CONNECTING TO POWER
Take the controller power plug (22) and plug it into the middle socket on the
bottom of the controller. Plug the other end of the cable into a suitable
power socket for your G303. The display screen on the controller should now
turn on, however if this does not happen, please check that both the
connection on the controller and power socket are secure.
NOTE: The G303 is available in both 110V and 220V in some markets – please
ensure that your power socket is suitable for your G303 model.
07
BLUETOOTH CONTROL & APP
INTEGRATION
The G303 has built-in Bluetooth, making it compatible with the Grainfather App
where you can use your mobile device as a remote control for a completely
connected brewing experience.
1. Make sure that your G303 unit is powered on and within line of sight of
your mobile device.
NOTE: You can also connect your G303 to Wi-Fi and control your brew from
virtually anywhere with the GCAST. Sold separately on the online Grainfather
Store: shop.grainfather.com
2. Download the Grainfather App on your mobile device from the App Store or
Google Play Store and register an account if you’re a new user.
3. Once in the app, navigate to the equipment screen. The equipment screen
shows all the brewing and fermenting equipment that you have set up on your
account.
NOTE: The following screen layouts depict an iOS device and may differ
slightly for Android.
4. To add a new device, tap on the +’ icon on the bottom right of the screen and selectbrewing equipment’.
5. Select Grainfather’ on the list of brands and then selectGrainfather
G303′ on the list of equipment. Your G303 is now ready to brew using the
Grainfather App. Choose to select a recipe or even create your own, you can
also use the step-by-step brewing system to brew confidently.
SCAN AND EXPLORE THE FREE GRAINFATHER APP
08
MANUAL BREWING ON
THE G303
Use the G303 smart controller in manual brewing mode for no connection to your mobile device required. From the main menu, choose between step mashing or delayed heating to get started.
DEFAULT SCREEN
The default screen shows the current temperature and target temperatures, unit
symbol (Celsius or Fahrenheit), timer (when active), wireless connection and
status symbol.
BUTTON PUMP
MAIN MENU
PRESS ONCE
HOLD FOR 3 SECONDS
Pump on/off (the button will light up when on)
HOLD FOR 6 SECONDS
HEAT
Heat on/off (the button will light up when on)
Go straight to boil/sets target temperature to 100°C (212°F)
Voltage control mode for distilling
SET
Turn off alarms
Set timer (hold until timer unit flashes then enter time using
the up and down arrows)
Switch between °C and °F
UP
Increase target temperature/time
Increase target by 2°C (3.6°F)/5 minutes
DOWN
Decrease target temperature/time
Decrease target by 2°C (3.6°F)/5 minutes
MENU
Press the up and down arrows together to enter menu mode
09
ACCESSING THE MENU 1. Press both the up and down arrow together once to enter menu mode.
STEP MASHING
In this mode, you can choose to program up to four steps of your brew day into
the controller. 1. Choose how many steps you need by pressing the up or down
arrow, then press `HEAT’ to proceed.
2. Press the up or down arrow to choose an option and press the `HEAT’ button to proceed with your selected option.
2. Press up or down to change the temperature.
3. Press `SET’ to edit the time. 10
4. Press up or down to change the time for that step.
DELAYED HEATING
You can choose to set your Grainfather controller to begin heating at a later
stage. For example, you could set it to start heating in seven hours as shown
below. 1. Press the up or down arrows to set the time delay.
5. Press the `HEAT’ button to proceed to the next step. Repeat, depending on the number of steps you have selected.
2. Press the `SET’ button to toggle between hours and minutes.
6. On the last step you require press the `HEAT’ button to start brewing.
3. Press the `HEAT’ button to start. The screen will display the countdown.
NOTE: Target temperature can be set before or after the timer starts for
delayed heating.
11
BREWING ON THE G303
You are now set up and ready to start brewing! Follow these instructions to guide you through your brew on the G303.
4. INSTALL THE GRAIN BASKET
Slowly insert the assembled grain basket into the G303. Ensure that the top of
the grain basket rests flat on the support ring (19).
1. ADD THE MASH WATER Make sure that your G303 is on a flat, stable surface
before you start brewing. We recommend placing your G303 on the floor due to
heavy lifting that is required later in the brewing process. Add the volume of
mash water required by your recipe you can use the advanced calculators
available on the Grainfather App. NOTE: Ensure that the recirculation ball
valve is open during this step to avoid a pump airlock. 2. SET THE MASH/STRIKE
TEMPERATURE Using the controller or your mobile device, set the required mash
temperature and press the `HEAT’ button to begin heating. Place the glass lid
(17) on the G303 to reduce the heating time. At this stage, if your G303 is
connected to the Grainfather App, you can run your brew session remotely from
your mobile device. NOTE: The clips on the side of the G303 should not be used
to secure the glass lid. These should only be used with distilling
attachments. 3. ASSEMBLE THE GRAIN BASKET Insert the grain plate (26) into the
grain basket (27) and ensure that the plate is sitting firmly on the bottom of
the basket.
26
27
12
5. ADD GRAINS AND STIR
Once your water has reached the set temperature, slowly add the grain to the
grain basket, stirring well to avoid any dry clumps.
NOTE: Unlike prior Grainfather G30 systems, the G303 does not require a top
plate or an overflow pipe in the basket. The grain basket now has extra
drainage holes, removing the need for these parts. You can choose to use a top
plate when brewing higher ABV beers if you want to maximise the amount of
grain used in the G303. In this case, the top plate can help to keep grain in
the basket if the wort levels are high, and stop any wort from draining
through the lifting bar holes on the side of the basket. An additional grain
plate can be purchased for use as a top plate on the online Grainfather Store
or at your local retailer. The maximum grain weight that the G303 basket can
hold is 9kg. However, this is affected by grain crush, type and variety. It
may be easier to manage this by using an additional grain plate on top of the
mash. If you’re unsure how well your particular grain bill will fit then we
recommend mashing up to 8kg.
6. ASSEMBLE AND ATTACH THE RECIRCULATION PIPE Check that the O-ring is fitted
into the plastic knob underneath the rolled groove of the pipe. Then, insert
the silicone hose (16) over the barbed end of the recirculation pipe (1).
1
16
Place the lid on the G303 and feed the silicone hose through the hole in the
lid and firmly screw the recirculation pipe onto the safety valve (2). The end
of the silicone hose should rest on the grain bed.
DISCHARGE PIPE SAFETY VALVE
Safety spring closed
Check valve
Safety spring open
Ball Spring O-ring
Ball valve
With no insert (recirculation pipe) the spring automatically shuts off
any flow out of the valve.
NOTE: If at any stage the valves block up, switch off the pump, take the
valves apart and clean them. It is good practice to take apart the valve
assembly and give it a good clean after a brew to ensure it is clear from any
debris.
8. LIFTING THE GRAIN BASKET When the mash has finished, turn off the pump and
remove the recirculation pipe and lid. Close the ball valve and insert the
lifting bar (25) into the two opposite holes in the grain basket. Lift the
grain basket, and then turn it 45° so that the feet at the bottom rest
securely on the support ring.
7. RECIRCULATE YOUR MASH (WORT) Ensure the ball valve (4) on the side of the
unit is open. Then to begin recirculating, press the PUMP’ button on the controller or via the Grainfather App. If recirculation doesn’t start, press thePUMP’ button to turn it off, blow into the hose to clear the airlock,
then restart the pump. The ball valve can be used to adjust the flow rate so
that the wort level is just above the grain bed (approx. 2cm).
NOTE: To save time, we recommend preparing your sparge water during your mash.
BALL AND SAFETY VALVE OPERATION
Closed
Open
18 19 13
CAUTION
BE VERY CAREFUL not to twist the basket while it’s in the sparge position as
it could knock it off the support ring. If the sparge is stuck and not
draining, lower the basket and slice the grain bed with a stainless steel
paddle or similar. Cut through the stuck grain from the centre towards the
outside repeatedly until it loosens. Then, return the basket to the sparge
position to continue sparging. Always ensure that the support ring fits
tightly into its groove and is held in place by the support ring retainer
(18). If you remove the support ring for cleaning, ensure that it is correctly
reinstalled along with the support ring retainer.
19
14
9. SPARGING AND BASKET REMOVAL Allow the mash liquid to drain into the
boiler. Then, gently pour the sparge water evenly over the grain bed until the
water is a few millimeters above the grain and allow to drain. Once the sparge
is finished, use the lifting bar to remove grain basket from the G303.
TIP: To save time, you can now start to increase the temperature in
preparation for the boil. If you are using a large grain bill, we recommend
scooping some of the grain from the basket to reduce the weight before
lifting.
10. BOIL YOUR WORT After removing the grain basket, complete the boil and add
the hop additions required by your recipe.
CAUTION
Ensure that the unit does not reach a boil while the grain basket is still in
place. During the boil, do not use the glass lid as it may cause a boil over.
CAUTION
In the event the unit is boiled dry, the Grainfather G30 has an automatic
reset switch under the base of the boiler which will reset once the boiler has
cooled down. Older models of the Grainfather G30 have a reset button under the
base of the unit. When it is safe to do so, press the reset button to reset
the thermostat. In the unlikely event this cut-out fails on any Grainfather
G30, a thermal fuse gives added protection. This fuse will activate and cut
the flow of electric current if the temperature exceeds a safe level.
Current units with automatic reset cannot be reset by the user and the boiler
will require professional attention.
COOLING WITH THE COUNTERFLOW
CHILLER
The G303 includes a counterflow chiller (28). This has been designed to efficiently cool your wort, and allow easy, and sanitary transfer directly into a fermenter.
CLEANING
Before your first use, run cleaner through the counterflow chiller. For
detailed instructions on how to clean your counterflow chiller, please refer
to the cleaning section on page 16. Also, ensure that your fermenter is clean
and sanitised before cooling and transferring your wort.
FLOW RATES
The maximum flow rate of wort through the counterflow chiller is 1.5L (0.4 US
Gal). At this flow rate, with a tap water temperature of 20°C (68°F), the wort
in the fermenter should be at approximately 25°C (77°F). You can get the wort
in your fermenter close to 3°C (37°F) above your tap water temperature but
reducing the flow of the wort through the counterflow chiller and adjusting
the 1/2″ ball valve (23).
Cold water in
Hot water out
Cold wort
out (B)
16
Hot wort in (A)
16
1. At the end of the boil turn the heating element off. Create a whirlpool by
stirring the wort vigorously with your paddle.
2. Place the counterflow chiller on top of the G303 or nearby table or bench
and screw the plastic knob on the hot wort in (A) hose to the safety valve.
NOTE: Be careful not to sit the chiller on top of any hoses as this could
cause a build-up of liquid that may cause the hose to burst.
3. The coloured hoses are where the cold water enters (blue) and hot water
exits (red). To allow cold water to enter, attach the blue hose to your tap,
using your tap adapter set (24). The red hose is where the hot water drains
out as it flows through the counterflow chiller. The cold wort out hose (B) is
where your wort exits the counterflow chiller. Ensure the red hose is directed
somewhere to collect or drain safely.
TIP: Collect some of the hot water from the red hose to use as cleaning water
after your wort has finished transferring.
4. To sanitise the counterflow chiller, place the cold wort out hose into the
G303 body. Turn the pump on to recirculate hot wort back into the G303 to
sanitise the inside of the coil. Complete this step without cold water
circulating and recirculate for approximately 30-60 seconds but no longer then
turn the pump off.
NOTE: The G303 is designed to cool while simultaneously transferring your wort
to your fermenter. You should not cool by recirculating into your G303 as this
reduces the thermal efficiency and may damage the counterflow chiller.
5. Ensure no hoses are kinked and that the water can flow freely then
gradually turn on your cooling water and adjust the flow rate. Allow the
cooling water to flow for 2 minutes then turn on the pump. Once the cold wort
out hose (B) runs cool, switch the pump off and place the end of the hose
inside your clean and sanitised fermenter and switch the pump back on. Always
try to keep the fermenter opening covered to avoid contamination while
transferring your wort.
CAUTION
The counterflow chiller is not intended for continuous hot wort circulation
without cooling water flowing through. Do not use during processes like
whirlpooling and hop stands. Unintended use may damage the counterflow
chiller.
NOTE: Take an original gravity (OG) reading of your cooled wort before adding
yeast as per the correct yeast pitching temperature within your recipe. Fit a
bung and airlock to the top of your fermenter to keep it safe from
contaminants that may spoil your brew.
15
ADVICE FOR CLEANING
& STORAGE
No one really enjoys cleaning, but it’s worth it for great beer!
ADVICE FOR CLEANING AND STORAGE · Always disconnect the G303 before cleaning.
· After use, the G303 and all of its components should
be cleaned immediately and dried thoroughly.
· We recommend using the Grainfather High
Performance Cleaner or Five Star PBW as it removes the need for tedious
scrubbing.
· All stainless steel components can be cleaned using
a conventional, unscented detergent. Abrasive agents and sponges/brushes could
cause scratching and are not suitable for use. Ideally, use a dish brush to
clean the base of the unit.
· Do not store in a damp area as this could cause
damage to the product.
· Once you have cleaned your equipment, dry,
reassemble and store.
CLEANING THE G303 1. Remove all trub and solids from the G303 by rinsing
thoroughly and emptying the contents.
2. Fill the unit with 10L (2 US Gal) of water and 1 cap of Grainfather High
Performance Cleaner.
3. Heat the water to 60°C (140°F) and use a dish brush or soft sponge to
clean the unit.
4. Attach the counterflow chiller and place the cold wort out hose from the
chiller into a 5L (1.3 US Gal) jug. Once ready, switch the pump on and let the
water run into the jug until the water clears. Now, place the hose into the
unit (through the counterflow chiller spindle) so the water continues to
recirculate and leave for 10-15 minutes.
16
5. Once complete, switch the heating and pump off, disconnect the counterflow
chiller and empty the contents. 6. Follow steps 2-5 again but this time with
clean water only to rinse and flush the G303 and counterflow chiller.
CAUTION: RISK OF BURNS
Use heat resistant brewing gloves or other suitable gloves during this
process.
PUMP CLEANING We recommend cleaning your pump every 5-10 brew sessions. This
process should be done after you’ve cleaned your G303. 1. Remove the pump
cover (6) to expose the pump in the pump housing. 2. Shift the hose clamps
away from the pump inlet and outlet. 3. Remove the two screws that hold the
pump in place and detach the inlet and outlet hoses from the pump. 4. Remove
the screws holding the impeller housing to the pump. 5. Remove the top cover
of the impeller housing exposing the impeller. NOTE: There is no need to
expose the magnetic drive pump. 6. Use a pipe brush or something similar to
clean the impeller and impeller housing. NOTE: Do not submerge the pump in
water. 7. Dry the components and reassemble the unit.
UPGRADE
YOUR G303
Get the most out of your G303 Brewing System with these optional upgrades. Each sold separately on the Grainfather store: https://shop.grainfather.com
ALEMBIC DOME & CONDENSER Turn the G303 into a microdistillery by attaching the
Still Spirits Alembic Dome and Condenser.
Hi! make me a distillery
GCAST
Connect your G303 Controller to Wi-Fi and never go out of range via Bluetooth
again. Plus, connect and view data from your TiltTM without the need for extra
equipment and software.
WORTOMETER Use in conjunction with the G303 Controller thermometer, to monitor
and manage your wort transfer temperature through the counterflow chiller.
17
IMPORTANT SAFEGUARDS
READ AND FOLLOW ALL INSTRUCTIONS
CAUTION
Risk of fires and electric shock. Replace only with genuine Grainfather cord set. Do not immerse in water.
SAVE ALL WARNINGS AND INSTRUCTIONS FOR FUTURE REFERENCE
FOR COMMERCIAL AND INDOOR USE ONLY
WARNING AV E R T I S S E M E N T
RISK OF ELECTRIC SHOCK . DO NOT OPEN. RISQUE DE CHOC ÉLECTRIQUE. NE PAS OUVRIR
SCAN AND EXPLORE THE FREE GRAINFATHER APP
RESOURCES: Check out our YouTube Channel for helpful videos. For more
information, visit our Help Centre: help.grainfather.com GET IN TOUCH ONLINE:
help.grainfather.com/hc/en-us/requests/new
D1
WWW.GRAINFATHER.COM
References
- Grainfather All Grain Brewing
- Your All Grain Brewing Community | Grainfather
- Grainfather All Grain Brewing