BIRO 8-12 Operation manual

MODELS 8-12 AND 8-22
OPERATION AND SERVICE MANUAL
GRINDER PARTS LIST
GENERAL INSTRUCTIONS
Starting with Serial No. 5200, No. C84001 with Chain Drive
and No. C84859 with HTD Drive Belt
Note: This Catalog does not pertain to 8-12/8-22 with Plastic Gears
PTCT
8-12/8-22
No. C657-111
BIRO BuiltBIRO Designed
IMPORTANT SAFETY NOTICE
This Manual contains important
safety instructions which must
be strictly followed when using
this equipment.

TABLE OF CONTENTS
Page
NOTICE TO OWNERS AND OPERATORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SAFETY TIPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UNCRATING AND SET UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ELECTRICAL CONTACTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TRAY AND CASE PARTS DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BOWL, FRAME AND MOTOR PARTS DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HIGH TORQUE DRIVE SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OPERATOR’S SIGNATURE PAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LIMITED WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MOTOR WIRING AND ELECTRICAL REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . .
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TO PROCESS PRODUCT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BEARINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TRAY AND CASE PARTS LIST AND PARTS ORDERING. . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
2
3
3-4
4
4
12-13
5
5
6
7
7
7
8
10
11
15
16
9
BOWL, FRAME AND MOTOR PARTS LIST AND ORDERING. . . . . . . . . . . . . . . . . . . . . . .
OPERATOR’S NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

1
NOTICE TO OWNERS AND OPERATORS
 BIRO’sproductsaredesignedtoprocessfoodproductssafelyandefciently.Unlesstheoperatoris
properly trained and supervised, however, there is the possibility of a serious injury. It is the responsibility of
the owner to assure that this machine is used properly and safely, strictly following the instructions contained in
this Manual and any requirements of local law.
No one should use or service this machine without proper training and supervision. All operators should
be thoroughly familiar with the procedures contained in this Manual. Even so BIRO cannot anticipate every
circumstance or environment in which its products will be used. You, the owner and operator, must remain alert
to the hazards posed by the function of this equipment particularly the ROTATING GRINDING WORM, which
canseverelyinjureaninattentiveoperatoramputatingngersandlimbs.Nooneundereighteen(18)yearsof
age should operate this equipment. If you are uncertain about a particular task, ask your supervisor.
This Manual contains a number of safe practices in the SAFETY TIP section. Additional warnings are
placed throughout the Manual. Warnings related to your personal safety are indicated by:
OR
Warnings related to possible damage to the equipment are indicated by:
BIRO also has provided warning labels on the equipment. If any warning label or Manual becomes
misplaced, damaged, or illegible, please contact your nearest Distributor or BIRO directly for a replacement.
Remember, however, this Manual or the warning labels do not replace the need to be alert and to use
your common sense when using this equipment.
“A copy of this manual is included with each Model 8-12/8-22 Grinder.”
- NOTE -
This Manual applies to machines with Serial Number 5200 AND C84001 and higher with chain drive
and serial number C84859 and higher with HTD drive belt..
“The descriptions and illustrations contained in this manual
are not binding. The manufacturer reserves the right to
introduce any modication without updating the manual .”

SAFETY TIPS
ROTATING GRINDING WORM
TO AVOID SERIOUS PERSONAL INJURY
NEVER Touch This Machine Without Training and Authorization By Your Supervisor.
NEVER Place Hands Into Machine Input or Output Openings.
NEVER Open Machine During Operation
ONLY Use a Qualied Electrician to Install Electrical Connections According to Local Building Codes:
Machine MUST Be Properly Grounded.
ALWAYS Connect to Proper Voltage & Phase.
ONLY Install on Level, Non-Skid Surface in a Clean, Well-Lighted Work Area Away From Children
and Visitors.
NEVER Use This Machine For Non-food Products.
NEVER Operate Machine With Tray Removed.
ALWAYS Turn Off, Unplug From Power Source and Perform Lockout/Tagout Procedure to This
Machine BEFORE Attempting to Unjam or Unclog, Cleaning or Servicing.
NEVER Leave Machine Unattended While Grinder is Running.
NEVER Alter This Machine From its Original Form as Shipped From Factory. DO NOT Operate
Machine With Parts Missing.
PROMPTLY REPLACE Any Worn or Illegible Warning Labels.
ALWAYS Read Operation and Service Manual BEFORE Operating, Cleaning or Servicing.
USE ONLY BIRO Parts and Accessories Properly Installed.
2

INSTALLATION
TO AVOID SERIOUS PERSONAL INJURY
PROPERLY INSTALL EQUIPMENT IN ADEQUATE WORK AREA
UNCRATING AND SET UP
1. Read this Manual thoroughly before installation and operation. Do not proceed with installation and
operation if you have any questions or do not understand anything in this Manual. Contact your local
Distributor, or BIRO rst.
2. Install machine on a level, solid, non-skid surface in a well-lighted work area away from children
and visitors.
3. This machine is complete except for a knife and plate. The grinding bowl assembly is packed separately
in the crate. Remove the grinding bowl assembly from the carton. Disassemble the grinding bowl assembly.
Assemble the grinding bowl only, onto the front of the grinder. Install the bowl lock handle assembly into
theframeunderthegrindingbowl.Securingthebowl.Thebackangeofthegrindingbowlshouldbetight 
against the front of the machine. Do not install grinding worm at this time.
3
ALWAYS Install Equipment in Work Area with Adequate Light and Space Away From Children and Visitors.
ALWAYS Use Qualied Technician and Electrician for Installation.
ALWAYS Connect to Proper Voltage & Phase.
ONLY Operate on a Solid, Level, Non-Skid Surface.
NEVER Bypass, Alter, or Modify This Equipment in Any Way From Its Original Condition.
NEVER Operate With Tray Removed.
NEVER Operate Without all Warning Labels Attached and Owner/Operator Manual Available to
the Operator.
4. Install the feed tray to the top of the grinder. After checking and making sure the power supply is correct,
plug in your machine. NEVER OPERATE MACHINE WITHOUT TRAY INSTALLED.
5.Machinemustbeproperlygrounded.Usequaliedelectriciantoinstallaccordingtobuildingcodes.
6. A toggle switch is located on the front of the machine.
7. Push the toggle switch to “ON” position. CHECK THE ROTATION OF THE WORM DRIVE SHAFT
ROTATION MUST BE COUNTER-CLOCKWISE asindicatedbytherotationdecalafxedtothe
grinding bowl. ROTATION MUST ONLY BE CHECKED WITH THE GRINDING WORM
REMOVED, otherwise serious irreparable damage may occur to grinding components. Push toggle switch
to “OFF” position.

8.Ifmachinerunsclockwise(backwards),itmustberewiredtocorrectrotation,otherwiseseriousirreparable
damage may occur to grinding components.
9. Check that the grinding bowl is properly seated and that the bowl lock assembly is tight. Insert worm
assemblyintogrindingbowl,placeknife(sharpedgesout)ontothesquareendoftheknifedrivepin.The 
breaker plate slides over the worm knife drive pin, and is held from rotating by a pin in the grinding bowl.
Put on the retaining ring.
ONLY HAND TIGHTEN RETAINING RING
For best results, use knife and plate as a set. Do not operate machine for any period of time without
product in the grinding bowl. This will cause heating and dulling of the knife and plate.
10. Check placement of all warning labels and Manual. Machine is now ready for trained operators to process
product.
11. Contact your local Distributor or BIRO directly if you have any questions or problems with the
installation or operation of this machine.
MOTOR WIRING AND ELECTRICAL REQUIREMENTS
(1)Interchangeofcurrentismadeinmotoroutletbox.Leadsareproperlymarked.Changinginstructions 
 areonthemotorplateormotoroutletbox.Electricalcontactormountedonmachineframemustalsobe
changed to match motor voltage.
(2)Allgrindersarewiredforthevoltageasordered.Besuremotorspecications(voltage,cycle,phase) 
 matchpowersupplyline.Besurelinevoltageisuptospecication.
(3)ElectricalconnectionstobeinaccordancewithsafetycodesandNationalElectricalCode.
(4)Ratedvoltageoftheunitshallbeidenticalwithfullsupplyvoltage.
(5)Voltagedroponthesupplylineshallnotexceed10%offullsupplyvoltage.
(6)Thefeederlineconductorsizeintheracewayfromthebranchcircuittotheunitmustbecorrectto
assure adequate voltage under heavy starting and short overload conditions.
(7)TheBIROManufacturingCompanyisnotresponsibleforpermanentwiring,connectionor
installation.
NOTE TO OWNER AND ELECTRICIAN: IF THIS MACHINE IS NOT CORD
AND PLUG CONNECTED TO THE ELECTRICAL SUPPLY SOURCE, THEN IT
SHOULD BE EQUIPPED WITH, OR CONNECTED TO, A LOCKABLE,
MANUALLY-OPERATED DISCONNECT SWITCH (OSHA 1010.147).
4
UNCRATING AND SET UP - CONTINUED
ELECTRICAL CONTACTORS
(1)Most1HPmotorsaredualvoltageandcanbechangedaccordingtowiringdiagramonmotornameplate.
(2)Besurecontactorvoltagematchesvoltageofmotor.
(3)Failure to use proper contactor for motor voltage will cause irreparable damage to contactor.
(4)Installproperplugonpowercordforvoltageused.
A. Item No. C903 Contactor LS07-110V
1 HP, 104-60-1
1 HP, 115-60-1
1 HP, 380/415/440-50/60-3 w/ 56110 transformer
B. Item No. C903-1 Contactor LS07-220V
1 HP, 220-50/60-3
1 HP, 208/230-60-1
1 HP, 240-50-1

5
OPERATION
ROTATING GRINDING WORM
TO AVOID SERIOUS PERSONAL INJURY
A. TO PROCESS PRODUCT
1. Before starting grinder, have meat stomper within easy reach and a container for receiving ground
product at the output end of grinding bowl.
2. Turn the toggle to “ON” position. Look down grinder bowl and make certain grinding worm is turning
 intheproperdirection(counter-clockwise).
3. Carefully push unground product to top opening of grinding bowl and let drop onto the grinding worm.
Product will then be ground out.
DO NOT REACH DOWN BOWL OPENING
4. Use meat stomper to assist any product that should “bridge up” in grinding bowl opening.
5. Whennishedgrinding,turnthetoggleto“OFF”positionandunpluggrinderfrompowersourceand 
perform lockout/tagout procedures.
DO NOT Wear Gloves While Operating.
ONLY Properly Trained Personnel Should Use This Equipment.
DO NOT Tamper With, Bypass, Alter, or Modify This Equipment in Any Way From Its Original Condition.
NEVER Open Machine During Operation.
NEVER Operate Without all Warning Labels Attached and Owner/Operator Manual Available to
the Operator.
NEVER Place Hands Into Machine Input or Output Openings.
NEVER Operate Machine With Tray Removed.
ALWAYS Turn Off, Unplug From Power Source and Perform Lockout/Tagout Procedure to This Machine
BEFORE Unjamming, Unclogging, Cleaning or Servicing.
NEVER Leave Machine Unattended While Grinder is Running.

CLEANING
ROTATING GRINDING WORM
TO AVOID PERSONAL INJURY
CLEANING THE BIRO MODEL 8-12/8-22 GRINDER
1. Disconnect grinder from power source and perform lockout/tagout procedures.
2. Remove the feed tray.
3. Remove grinding bowl end ring, breaker plate, knife, grinding worm and the grinding bowl.
DO NOT SPRAY DIRECTLY AT ELECTRICAL COMPONENTS
ONLY Use Recommended Cleaning Equipment, Materials and Procedures.
NEVER Spray Water or Other Liquid Substances Directly at Motor, Power Switch or any Other
Electrical Components.
ALWAYS Thoroughly Clean Equipment at Least Daily.
ALWAYS Turn Off, Unplug From Power Source and Perform Lockout/Tagout Procedure to This Machine
BEFORE Cleaning or Servicing.
4. Machine is now ready to be cleaned using warm soapy water and rinsed with clean water. Machine may be
cleaned by power spray washing, taking care to not spray directly at any electrical controls.
5.Aftermachinehasbeencleanedandallowedtodry,allexposedmetalsurfacesshouldbecoatedwitha
good food grade light oil or grease.
CLEANING THE BOWL- RING AND WORM
CARE OF TIN COATED PRODUCTS
(DO’SANDDON’TS)
1. Do not use abrasive cleaning materials, such as brillo pads or metal scrapers. Tin is a soft metal and should be
cleaned with a soft cloth and dried.
7.Ifwaterisexceptionallyhard,dryingwillbenecessarytopreventspotting.
2. Do not use a cleaning agent containing a high percentage of free alkali or acid.
3. Do not use a detergent containing a high percentage of tri-sodium phosphate or meta-silicate.
Tin is reactive to both.
4. Rinse well and dry thoroughly after washing to remove agents that may be reactive to tin.
5. If sterilizing agent containing chlorine is used, the tinned surface must be thoroughly rinsed.
Chlorine is corrosive to tin.
6. Dry thoroughly after rinsing and store in a dry environment.
6