Ss Brewtech Grain Mill Product Guide
Introduction
This guide provides information on the Ss Brewtech Grain Mill, covering its features, installation, operation, and maintenance.
Before Use
Belt Tension
Before first use, adjust the belt tension according to the instructions on page 7 to prevent belt damage.
Mounting
The grain mill must be securely fastened before use. Do not use on plastic buckets or unsecured containers.
Cleaning
Do not wash the grain mill with water or liquids.
Product Overview
Included Items
- Hopper with Mounting Plate
- Grain Mill
- Power Supply
- Hex Wrenches (4mm for hopper mounting, 5mm for idler pulley)
Features and Specifications
- Roller Gap Range: 0.020–0.080 inches (0.5–2.0mm)
- Compatible with standard 120–240VAC 15A wall outlets
- Impact-resistant, thermoformed hopper
- Hopper Capacity: 25 lbs (unmilled)
- Throughput: Up to 350 lbs/hour (equivalent to one bag of grain every 8 minutes)
- Tool-free gap adjustment
- Motor and drive system separated from the crushing chamber to prevent dust clogs
- Food-grade 304 stainless steel fluted rollers
- Different roller speeds to improve husk retention and filtration
- Large diameter rollers reduce pinch angle, increasing grain crushing efficiency and roller lifespan
Installation
Hopper Installation
After unpacking the Grain Mill, power supply, and hopper, attach the hopper to the grain mill using the included M6×1.0×12mm Button Head Screws (pre-installed in the grain mill) and the hex wrench, as shown in the diagram.
Installation – Ss Brew Cube | Grain Mill Kit
To attach the Grain Mill to an Ss Brew Cube, align the four mounting holes on the exterior of the Grain Mill with the four holes on the top plate of the Ss Brew Cube. Secure the Grain Mill to the top plate using the four M6×1.0×14mm screws included with the Ss Brew Cube | Grain Mill Kit.
Installation – Universal Table Top
When mounting the Grain Mill to existing benches or other structures, calculate the required screw length using the following formula: Mounting Surface Thickness + 0.5 inches = Length of Mounting Screw. It is critical that the screws do not engage more than 0.5 inches (13mm) into the grain mill's extrusion, as this could damage the equipment. For example, if your table is 1.5 inches thick, you need 2.0-inch screws (1.5 + 0.5 = 2.0). The bolt pattern for the mounting holes is provided.
? Note: It is strongly recommended to mount the Grain Mill to a robust structure due to its weight. Placing it on a 5-gallon bucket is extremely dangerous and not recommended.
Grain Mill Operation
Roller Gap Setting
Use the knurled adjustment screw on the Grain Mill handle to set the roller gap size according to your desired grain crack size, referencing the table below. For most grains, a setting of "0" is a good starting point. Ensure the adjustment knob does not touch the Grain Mill extrusion. Loosen the knob, move the handle, select the desired position number on the extrusion, and then tighten the adjustment screw to secure it.
Grain Mill Gap Range
| Position Number | Gap (mm) | Gap (inch) |
|---|---|---|
| -5 | 0.50 | 0.020 |
| -4 | 0.70 | 0.028 |
| -3 | 0.85 | 0.033 |
| -2 | 1.00 | 0.039 |
| -1 | 1.15 | 0.045 |
| 0 | 1.30 | 0.051 |
| 1 | 1.46 | 0.057 |
| 2 | 1.61 | 0.063 |
| 3 | 1.76 | 0.069 |
| 4 | 1.90 | 0.075 |
| 5 | 2.00 | 0.080 |
The values above are approximate. Actual grain crush size should be measured using calibrated sieves.
? Note: When using negative gap settings, belt re-tensioning may be required (refer to page 7).
Operating Procedure
- Secure the grain mill to a flat surface (e.g., Ss Brew Cube | Grain Mill Kit or a table top).
- Connect the power cable to the grain mill.
- Connect the power adapter to an AC outlet and switch it to "On".
- Move the adjustment knob to the desired position number/gap and turn the adjustment screw to lock it into place.
- Press the grain mill's power button to start (a blue LED light will illuminate).
- Add grain to the hopper.
? Note: Ensure the power adapter's switch is "On" before turning on the grain mill.
Grain Mill Maintenance
Belt Tension Adjustment
The Ss Grain Mill requires minimal maintenance. Its sealed roller bearings are pre-lubricated and have a long lifespan. The belt is also highly durable, but may require occasional re-tensioning. Follow these steps for belt re-tensioning:
- Unplug the grain mill's power adapter.
- To apply tension, set the adjustment handle to a position two notches above your normal crushing setting. For example, if you normally crush at notch "0", set the adjustment screw to notch "-2".
- Remove the four M6×1.0×45mm screws securing the drive side cover (the plastic cover without the power button or logo plate).
- Loosen, but do not completely remove, the shoulder screw holding the idler pulley.
- Push the idler pulley downwards and outwards to tension the belt. Ensure the idler pulley spacer is securely in place, then retighten the shoulder screw.
? Note: Do not overtighten the shoulder screw, as this can damage the side plate. A standard 3-inch hex wrench is sufficient for tightening. T-handle or longer wrenches are not necessary.
If the rollers are overloaded, the idler pulley automatically loosens to protect the entire system. In such cases, re-adjust the belt tension following the steps above.
Belt Rotation
The drivetrain belt can be rotated if one side becomes worn or damaged. Depending on the extent of damage, belt replacement may be necessary.
- Unplug the Grain Mill.
- Remove the four M6×1.0×45mm screws from the drive side cover.
- Loosen, but do not completely remove, the shoulder screw holding the idler pulley.
- Push the idler pulley inwards to remove the belt.
- Flip the belt (or replace with a new one) so the outer teeth face inward, then re-install it, ensuring it engages with the gears. Route the belt in the same direction as shown.
- To tension the belt, set the adjustment handle to a position two notches above your intended crushing position. For example, if you typically crush most grain at notch "0", set it to notch "-2".
- Apply tension by pushing the idler pulley down and outward, then tighten the shoulder screw to ensure the idler pulley spacer is securely in place.
? Note: Do not overtighten the shoulder screw, as this can damage the side plate. A standard 3-inch hex wrench is sufficient for tightening. T-handle or longer wrenches are not necessary.
Grain Mill Operation
Cleaning
Use a compressed air blower to blow away debris from inside and outside the unit. A vacuum cleaner can also be used to collect debris around the grain mill.
Clearing a Jam
If something gets jammed in the rollers, the unit may make a rattling noise. In such cases, immediately turn off and unplug the grain mill. Inspect the unit and remove any jammed material from the rollers.
Power Supply Fail-Safe Mode
The power unit features a fail-safe mode to protect the grain mill from overcurrent. When in fail-safe mode, power is cut to both the grain mill and the power supply, and the green power indicator light turns off. To reset the power unit, follow these steps:
- Turn the grain mill's power button "Off".
- Disconnect the power from the grain mill.
- Turn the power unit's switch "Off" and unplug it from the outlet.
- Wait 10 seconds for the power unit to reset automatically.
- Plug the power unit back into the outlet and turn it "On". The green light should illuminate.
- Turn the grain mill's power button "On".
- Resume normal milling operations.
Precautions
Do not place fingers near the rollers while the plug is connected or during operation.
Always unplug the grain mill before performing any service work.
Do not clean the grain mill with water or other liquids.
Only feed dry grain into the grain mill.
