GRAINFATHER EQU-06-065 Electric Grain Mill Instructions

: June 5, 2024
: GRAINFATHER

Table of Contents

SAFETY INFORMATION
ELECTRIC GRAIN MILL DIAGRAM & PARTS LIST
- TECHNICAL SPECIFICATIONS
- PARTS LIST
HOW IT WORKS
SECTIONED VIEW
ASSEMBLY & OPERATION
MILL GAP SIZES
CLEANING & MAINTENANCE
IMPORTANT SAFEGUARDS
Documents / Resources

GRAINFATHER EQU-06-065 Electric Grain Mill Instructions

SAFETY INFORMATION

DO NOT operate the device without the top cover, bottom cover and hopper assembled.
When operating, keep any long hair tied up and keep other loose items such as jewellery away from the device. Failure to do so may result in serious injury or death.
This device is designed to crush dry grain only. DO NOT put other contents into the mill.
Keep the device dry. DO NOT crush wet grain. DO NOT operate if hands are wet.
Always crush grain into a closed vessel (such as using a bucket covered by a Grainfather Grain Mill Bamboo Mounting Board) to prevent grain dust from entering the motor vents.
Always operate on a stationary flat surface such as the Grainfather Grain Mill Bamboo Mounting Board.
DO NOT leave the device unattended while running.
DO NOT insert fingers into the top cover opening, bottom cover grill or motor vents.
DO NOT lean on the hopper.
Keep the motor vents clear of any objects as they require uninterrupted airflow to operate.
When moving the device, ensure that the power cord is unplugged and hold the device by the handle.
Switch off the appliance and disconnect it from the power supply before changing accessories or approaching parts that move when in use.
DO NOT operate the appliance for over 6 minutes of continuous use and DO NOT crush over 10 kg of grain continuously.
This appliance is intended to be used in household applications.
This appliance should not be used by children. Keep the appliance and its cord out of reach of children.
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.
Appliances can be used by 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 if they understand the hazards involved. Children shall not play with the appliance.
Serious injury may result from misuse.

NOTE: Not following the safety information above could result in serious injuries and may void your warranty.

ELECTRIC GRAIN MILL DIAGRAM & PARTS LIST

TECHNICAL SPECIFICATIONS

Voltage: 220 V – 240 V
Frequency: 50 Hz
Power: 400 W 10 adjustable mill gap settings: 0.8 – 2 mm
Crush rate : up to 1.7 kg (3.7 lb of grain per minute
Rollers: 58 mm diameter and made of hardened stainless steel with a flute design that’s akin to commercial grain mills
Grain hopper capacity : 1 kg (2.2 lb)

PARTS LIST

Motor assembly
Power switch
Speed dial
4 x motor mounting screws (2 screws are not visible in the diagram shown)
Grain hopper
Top cover
Top cover finger guards
Drive roller
Idle roller
Roller housing
Mill gap dial
Spring-loaded pin
4 x roller housing screws
Bottom cover
Bottom cover tabs (for permanent mounting)
Grainfather Grain Mill Bamboo Mounting Board (sold separately)
Power cord

Product overview

HOW IT WORKS

The Grainfather Electric Grain Mill achieves a superior grain crush quality by using its heavy duty, hardened, stainless steel rollers. A combination of large diameter rollers and a flute design akin to commercial grain mills, allows the mill to crack the outer husk of the grain longitudinally, while still maintaining most of the husk intact. Traditional mills in the homebrew industry use small diameter knurled rollers which pinch the grain and can result in the grain being excessively crushed.

SECTIONED VIEW

Section view

NOTE: The drive roller is directly connected to the motor shaft; grain enters the mill gap and forces the idle roller into motion.

ASSEMBLY & OPERATION

This product is designed to be used with the Grainfather Grain Mill Bamboo Mounting Board. We recommend mounting the mill onto the board and placing it onto the top of a bucket.

NOTE: If using an alternative board or bench, you will need to cut a rectangular opening that measures 48 mm x 112 mm. The tabs on either side of the bottom cover are for optional permanent mounting (e.g. onto a bench) if desired. M4 screws (not included) are recommended for this.

ATTACH & SET
Attach the grain hopper onto the top cover and set the roller gap to the desired setting by pulling the spring-loaded pin outwards. Rotate the dial until the pin is aligned with your desired setting and then release the pin.

MILL GAP SIZES

Gap Setting	Gap Size (mm)	Recommended Grain

1

2

3

| 0.8

0.85

0.95

| Dark Malts (>450 EBC/150L): Black Patent, Carafa, Chocolate, Roasted Barley, etc.
4| 1.1| Non-Barley Malts: Millet, Rye, Wheat. Specialty Malts: Caramel, Crystal, Biscuit, Brown, Golden Naked Oats, etc.
5

6

| 1.3

1.5

| Base Malts: American 2-Row, Munich, Pale Ale, Pilsen (pilsner), Vienna, etc. Large Size Continental and Heritage Malts: Koln (Kolsch), Golden Promise, Maris Otter, etc
7

8

9

10

| 1.7

1.85

1.95

2

| Use for other specialty malts that need a wider gap, and brewing systems that require a high wort flow (a coarse crush)

This is an estimate, each mill may vary slightly.
** These are general guidelines, malt size and specification varies by barley variety and malthouse. If you experience issues increase the gap size. Flaked grain and corn products are not recommended.

NOTE: Rolled or flaked adjuncts (e.g. oats, rice, corn) do not need to be crushed before brewing. We do not recommend crushing a mixture of grain that contains a high amount of these adjuncts.

ADJUST THE SPEED
Use the speed dial on the top of the device to adjust the motor speed. NOTE: For most malts, we recommend a motor speed of 4. Crush results may vary with different grains.

CONNECT TO POWER
Plug the power cable into the device via the socket inlet on the motor assembly. Plug the other end of the cable into a power supply.

ADD GRAIN
Pour the grain into the grain hopper. Do this before turning on the device to avoid grain getting stuck in the mill.

TURN ON, TOP UP & TURN OFF
Flick the switch above the power cord to turn on and begin crushing. Top up the hopper as required until you have finished.

NOTE: If crushing large quantities, allow the mill to rest for 3 minutes after every 10 kg (22 lb) of grain crushed. Once finished, turn off the mill.

CAUTION

Always ensure that there is adequate space in the bucket that you are crushing your grain into. If you crush into a full bucket, the grain can build up inside the roller housing and cause the motor to get stuck. If you suspect that the motor is jammed, immediately turn off the unit and unplug it. Shake the mill over a container to remove all crushed grain that has built up inside the roller housing. Once cleared, reinstall the mill over a bucket with adequate space and continue crushing.

CLEANING & MAINTENANCE

WARNING

Under no circumstances should you plug the power cord into the device during cleaning and maintenance procedures.. Doing so may result in serious injury or death.

If a build up of grain dust occurs, brush down the device with a soft brush to remove.
Do not use water or any liquid cleaning agent.
To maximise the life of the device, always store the mill in a clean and dry environment. Storing the device in damp or humid conditions for extended periods of time can cause critical components to degrade.

NOTE: If using with the Grainfather Grain Mill Bamboo Mounting Board, this should also be brushed down when a build up of grain dust occurs. The board can be cleaned with warm water but ensure that it is completely dry before its next use.

We also recommend cleaning the rollers every 3 to 6 months as grain dust can build up between the roller teeth. To do this, follow the steps below

Ensure that the device is turned off and the power cord is unplugged.
Remove the hopper, top cover and bottom cover by removing the 4 screws on the side of the roller housing.
Clean the rollers using a soft brush.
Replace the top cover, bottom cover and hopper by reinstalling the screws on the side of the roller housing.
If necessary, also clean the motor vents with a soft brush.