Introduction

Hammer Mill Is an Agro-Industrial Machine That Operates in a Very High Speed. It Works With the Force of Collision. It Is Designed to Mill Any Dry Material That Does Not Contain Large Moisture or Oil Content.
Hammer Mill Is Well Designed to Make Milling Easy Unlike 1A/2A Mills That Generate Burning Heat While Grinding, hammer Mill Generates Just a Warming Heat and Is Seven Times Faster in Grinding. These We Are Able to Archive Through No Iron-to-Iron Contact in During Operation.
Cereals Is the Major Materials for the Machine. You Can Use It for Bone Meal and Granite Depending on the Mesh You Use.

Installation

The Machine Has a Very Simple Installation Procedure, It Runs at the Rate of 4500 R.P.M. Maximum Speed. To Maintain the Efficiency of the Machine It Must Run Within the Speed Range Which Is 4300-4500 R.P.M.
The Electric Motor Can Run at Any Speed but Its Speed Must Be Adjusted to Suit the Machine Through the Use of Pulley Using This Equation:
S.E.M multiplied by P.E.M. = S.M multiplied by P.M.
When S.E.M. is the speed of the electric motor;
P.E.M. is size of pulley of the electric motor;
S.M. is speed of the machine;
P.M. is the size of pulley of the machine.
E.g.: You want the machine to run at 4400 r.p.m. When the machine is fitted with 4 inches pulley and the speed of the electric motor is 2930 r.p.m. What size of pulley can you use for the electric motor?

SOLUTION:
Formula; SEM * PEM = SM * PM
SEM = 2930
SM = 4400
PM = 4
Let PEM be x
Thus:
2930 * x = 4400 * 4
2930x = 17600
Divide both side by “2930”
x = 6.0068
= 6 inches.
So you need to use 6 inches size of pulley for the electric motor to get 4400 r.p.m. on the machine.

In every locomotive machine there is vibration. For the effectiveness and the efficiency of the machine the vibration must be reduced.
In Hammer mill the vibration is reduced to the extent that it does not need to be fixed to the earth with the help of concrete but it is only mounted on the floor as it is brought with the help of rubber materials serving as mountings to suspend it from the floor. Rubbers like pieces of motor tyre that will absorb the vibration from entering the floor.
Fix the electric motor to its position and adjust the pulley to match with the pulley of the machine i.e. let them be on the same line. Use the both to set it (Non conformity of the pulleys will result to damaging). Adjust the electric motor to match the size of the belt I.e. to hold fast the two pulleys.

DIRECTION OF MOTION

Check the direction of which the electric motor is running whether it is in accordance with that of electric machine.
MACHINE’S DIRECTION OF MOTOR:
• When facing the inlet of the machine the shaft must be rolling backward.
• When standing by the side of the fan it will be going clockwise.
• When standing by the side of the pulley it will be going anticlockwise.

CONNECTION

If the direction of motion of the electric motor is not in accordance with that of the machine, please interchange the wires to get the right direction of motion.
E.g. red yellow blue(ie. as the tarminals)
= clockwise

blue red yellow
Interchanged to = anticlockwise

If the direction of the machine is wrong you will not notice it until you start to mill then, it will be returning the materials you are milling back to the tray.
The delivery pipe:

Use motor tube to bind the joints on the pipes to avoid leakage

MAINTAINCE:
To maintain the machine is very simple. The bearings for 015 models are 2207cc or uc207 depending on the bearing housing that is fixed to the machine. While that of 021 are 2209cc or uc209 i.e. entry.
The problems that the machine can encounter
a) Bad bearings.
b) Shaft worn-out /bending
c) Mesh leakage.
Others are minor problems like looseness of the Fan or Pulley.

BAD BEARRINGS;

Bearing does a lot of work on a machine. It makes the machine to run smooth and thereby minimize vibration to produces soft sound, but when the bearing becomes bad it brings about the increase in vibration and hash sound.
To return the machine to normal you have to change the bearings.
To change the bearings, remove the fan and the pulley, open the machine cover (in the case of 507 bearing housing, loose open the bearing covers but in the case of p207 loose the bearing housing from its seating) and lift the shaft from the pulley side to bring it out from the machine.
After changing the bearings replace it on its formal position and set as before.
NOTE: Make sure that every thing is as tight as before, the fan, pulley and the bearing housings. To remove the bearings from the shaft, use blunt chisel and big hammer to force it out.
To remove the Fan and the pulley, use blunt chisel and hammer to force it in a little and remove the key and pull the pulley or the fan with hand.
WARNING:
Failure to change the bearing at the right time may result to shaft bending or worn-out.

SHAFT BENDING/WORN-OUT:
When the shaft is worn-out it the means that the bearing will no longer be tight on the shaft (it will be free on the shaft.
Action to be taken: Take to a turner to refill the shaft and machine again to normal size using lathe machine. In the case of bending the shaft has to reconstructed using the original futures (I.e. the dimensions).

MESH LEAKAGE;

The mesh is very important in the machine. It is the mesh that determines the softness of the material milled. When the mesh is leaking the material milled will be mixed with coarse materials. When you noticed this check the mesh for leakage.

To check the mesh, open the machine cover and lift the mesh holder and slide out the mesh. If it is minor leakage (the hole is small) use rivet nail to close but if major (big hole) cut apiece mesh that will cover it and rivet there.
To replace the mesh in its position first clean the mesh seating from any material that may rest on it and slot the mesh.
The tinnier the holes on the mesh the softer the product will be.
Please take good care of the mesh it is very costly.