BIRO 346 User manual

MODEL 346 GRINDER
Applicable Starting with Serial Number 24856
PTCT
H500-203
9-04-9
PARTS LIST
THE BIRO MANUFACTURING COMPANY
MARBLEHEAD, OHIO 43440-2099 U.S.A.
FAX [phone]
Phone [phone]
Biro Designed Biro Built
MODEL 346 GRINDER
PARTS LIST
Applicable Starting with Serial Number 24856
PTCT
H500-203
12-09-11

TABLE OF CONTENTS
Page
NOTICETOOWNERSANDOPERATORS............................................... 1
SAFETY TIPS...........................................................................2
INSTALLATION.........................................................................3
UNCRATING ANDSETUP...................................................... 3
MOTOR WIRING AND ELECTRICAL REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
MOTORSPECIFICATIONS....................................................... 4
OPERATION........................................................................... 6
TOPROCESSPRODUCT.........................................................6
CLEANING ............................................................................ 7
MAINTENANCE ....................................................................... 8
GRINDINGBOWLINSTALLATION...............................................8
BEARING HOUSING LUBRICATION............................................. 9
ROLLER CHAIN AND DRIVE SPROCKET LUBRICATION ......................... 9
MAIN DRIVE CHAIN TENSION .................................................. 9
PARTSDIAGRAMS............................................................... 10&11
WARNINGLABELLOCATIONSONMACHINE.................................... 10&11
OPTIONAL STAINLESS STEEL BOWL, ENTERPRISE & UNGER . . . . . . . . . . . . . . . . . . . . . . . . . 12
WIRINGDIAGRAMS.................................................................. 13
PARTSLIST / ORDERING ............................................................. 14
OPERATOR’SSIGNATUREPAGE....................................................... 15
LIMITEDWARRANTY................................................................. 16

BIRO’s products are designed to process food products safely and efficiently. Unless the oper-
ator 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 opera-
tors 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 fingers and limbs. No one under eighteen (18) years of age should operate this equip-
ment. 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 warn-
ings are placed throughout the Manual. Warnings related to your personal safety are indicated by:
Warnings related to possible damage are indicated by:
BIRO also has provided warning labels on the equipment. If any warning label or Manual be-
comes 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.
This Manual applies to machines with serial number 24856 and higher.
1
NOTICE TO OWNERS AND OPERATORS
OR
–NOTE –
Acopy of this manual is included with each Model 346 Grinder.
The descriptions and illustrations contained in this manual are not binding.
The manufacturer reserves the right to introduce any modifications
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.
ALWAYS Read Operation and Service Manual BEFORE Operating, Cleaning or Servicing.
NEVER Place Hands Into Machine Input or Output Openings.
NEVER Open Machine During Operation.
ONLY Use a Qualified Electrician to Install 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 And/Or Tray Guard Removed or Magnetic Safety Switch
By-Passed.
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 Operating.
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.
USE ONLY BIRO Parts and Accessories Properly Installed.
2

INSTALLATION
TO AVOID SERIOUS PERSONAL INJURY
PROPERLY INSTALL EQUIPMENT IN ADEQUATE WORK AREA
ALWAYS Use Qualified Technician and Electrician for Installation.
ALWAYS Connect to Proper Voltage & Phase.
ALWAYS Install Equipment in Work Area with Adequate Light and Space Away From Children
and Visitors.
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 And/Or Tray Guard Removed or Magnetic Safety Switch By-Passed.
NEVER Operate Without all Warning Labels Attached and Owner/Operator Manual Available to
the Operator.
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
first.
2. Install machine on a level, solid, non-skid surface in a well-lighted work area away from children and visitors.
3. After installing machine in operating area, it is imperative that the four adjusting legs be adjusted to level the
machine and also eliminate rocking.
4. This machine is complete except for a knife and plate. There is a bowl shipping plug (stamped steel) placed in
the output end of the grinding bowl to retain the grinding worm during shipment. REMOVE THE BOWL
SHIPPING PLUG AND THE GRINDING WORM.
5. After checking and making sure the power supply is correct, plug in your machine. NEVER OPERATE
MACHINE WITHOUT TRAY AND GUARD INSTALLED. (Machine will not run with tray removed.)
3
ALWAYS LEVEL MACHINE BEFORE USE

6. Machine must be properly grounded. Use qualified electrician to install according to building codes.
MOTOR WIRING AND ELECTRICAL REQUIREMENTS
(A) Interchange of current is made in motor outlet box. Leads are properly marked. Changing instructions are
on the motor plate or motor outlet box.
(B) All grinders are wired 220 volts unless otherwise specified. Be sure motor specifications (voltage, cycle,
phase) match power supply line. Be sure line voltage is up to specification.
(C) Electrical connections to be in accordance with safety codes and National Electrical Code.
(D) Rated voltage of the unit shall be identical with full supply voltage.
(E) Voltage drop on the supply line shall not exceed 10% of full supply voltage.
(F) 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.
(G) The feederline conductor shall only be used for the supply of one unit of the relevant horsepower. For
connections of more than one unit on the same feederline, a local electrician will have be be consulted to
determine the proper conductor size.
(H) The size of the electrical wiring required from the power source to the grinder is a MINIMUM OF No. 10
WIRE.
(I) The BIRO Manufacturing Company is not responsible for permanent wiring, connection or installation.
MOTOR SPECIFICATIONS
HP KW VOLTS HZ PH AMPS
3 2.2 208/220 60 3 14.0
3 2.2 440 60 3 7.0
3 2.2 550 60 3 6.8
3 2.2 230 60 1 16.0
4
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).

7. A toggle handle that activates the internal on/off switch is located on the side of the machine. The interlock
safety switch is mounted to the top of the internal switch and will break contact with the magnetic starter should
the tray be removed.
8. Turn the toggle handle to the “ON” position. CHECK THE ROTATION OF THE WORM DRIVE SHAFT;
ROTATION MUST BE COUNTER-CLOCKWISE as indicated by the rotation decal affixed to the grinding bowl.
ROTATION MUST ONLY BE CHECKED WITH THE GRINDING WORM REMOVED, otherwise serious irreparable
damage may occur to grinding components.
9. If machine runs clockwise (backwards), it must be rewired to correct rotation, otherwise serious irreparable
damage may occur to grinding components.
10. Insert worm assembly into grinding bowl, place knife (sharp edges out) onto the square end of the worm
assembly. The breaker plate slides over the worm knife drive pin, and is held from rotating by pins in the grinding
bowl. Install 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.
11. Check placement of all warning labels and Manual. Machine is now ready for trained operators to process
product.
12. Use meat deflector attached to tray to eliminate meat splatter.
13. Contact your local Distributor or BIRO directly if you have any questions or problems with the installation or
operation of this machine.
5

WORM
TO AVOID SERIOUS PERSONAL INJURY
ONLY Properly Trained Personnel Should Use This Equipment.
NEVER Place Hands Into Machine Input or Output Openings.
NEVER Open Machine During Operation.
DO NOT Wear Gloves While Operating.
DO NOT Tamper With, Bypass, Alter, or Modify This Equipment in Any Way From Its Original
Condition.
NEVER Operate Machine With Tray And/Or Tray Guard Removed or Magnetic Safety Switch
By-Passed.
ALWAYS Turn Off, Unplug From Power Source and Perform Lockout/Tagout Procedure to This
Machine Before Unjamming, Unclogging, Cleaning or Servicing.
NEVER Leave Unattended While Operating.
NEVER Operate Without All Warning Labels Attached and Owner/Operator Manual Available to
the Operator.
A. TO PROCESS PRODUCT
1. Before starting grinder, have meat stomper within easy reach and container for receiving ground product at
output end of grinding bowl.
2. Turn toggle handle 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 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 finished grinding turn toggle handle to “OFF” position and unplug grinder from power source and
perform lockout/tagout procedures.
6
ROTATING GRINDING WORM – TO AVOID SERIOUS PERSONAL INJURY
OPERATION
ROTATING GRINDING WORM
TO AVOID SERIOUS PERSONAL INJURY
ONLY Properly Trained Personnel Should Use This Equipment.
NEVER Place Hands Into Machine Input or Output Openings.
NEVER Open Machine During Operation.
DO NOT Wear Gloves While Operating.
DO NOT Tamper With, Bypass, Alter, or Modify This Equipment in Any Way From Its Original
Condition.
NEVER Operate Machine With Tray And/Or Tray Guard Removed or Magnetic Safety Switch
By-Passed.
ALWAYS Turn Off, Unplug From Power Source and Perform Lockout/Tagout Procedure to This
Machine Before Unjamming, Unclogging, Cleaning or Servicing.
NEVER Leave Unattended While Operating.
NEVER Operate Without All Warning Labels Attached and Owner/Operator Manual Available to
the Operator.
A. TO PROCESS PRODUCT
1. Before starting grinder, have meat stomper within easy reach and container for receiving ground product at
output end of grinding bowl.
2. Turn toggle handle 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 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 finished grinding turn toggle handle to “OFF” position and unplug grinder from power source and
perform lockout/tagout procedures.
6
OPERATION
ROTATING GRINDING WORM
TO AVOID SERIOUS PERSONAL INJURY
ONLY Properly Trained Personnel Should Use This Equipment.
NEVER Place Hands Into Machine Input or Output Openings.
NEVER Open Machine During Operation.
DO NOT Wear Gloves While Operating.
DO NOT Tamper With, Bypass, Alter, or Modify This Equipment in Any Way From Its Original
Condition.
NEVER Operate Machine With Tray And/Or Tray Guard Removed or Magnetic Safety Switch
By-Passed.
ALWAYS Turn Off, Unplug From Power Source and Perform Lockout/Tagout Procedure to This
Machine Before Unjamming, Unclogging, Cleaning or Servicing.
NEVER Leave Unattended While Operating.
NEVER Operate Without All Warning Labels Attached and Owner/Operator Manual Available to
the Operator.
A. TO PROCESS PRODUCT
1. Before starting grinder, have meat stomper within easy reach and container for receiving ground product at
output end of grinding bowl.
2. Turn toggle handle 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 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 finished grinding turn toggle handle to “OFF” position and unplug grinder from power source and
perform lockout/tagout procedures.
6
OPERATION
CLEANING
ROTATING GRINDING WORM
TO AVOID PERSONAL INJURY
ALWAYS Turn Off, Unplug From Power Source and Perform Lockout/Tagout Procedure to This
Machine BEFORE Cleaning or Servicing.
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.
CLEANING THE BIRO MODEL 346 GRINDER
1. Disconnect grinder from power source and perform lockout/tagout procedures.
2. Remove grinding bowl end ring, breaker plate, knife and grinding worm.
DO NOT POWER SPRAY DIRECTLY AT ELECTRICAL COMPONENTS
3. 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.
4. The grinding bowl can be removed for cleaning if desired. This is accomplished by unscrewing the bowl lock
handle under the grinding bowl.
5. After machine has been cleaned and allowed to air dry, all exposed metal surfaces should be coated with a good
food grade light oil or grease.
7
DO’s
•Always keep knife & plate as matched set.
•Always keep the knife & plate sharp.
•Always check for levelness by laying the knife on
the plate before inserting in machine.
•Always install the knife & plate in correct se-
quence, knife 1st, then plate.
•Always keep knives & plates lubricated in storage
and when starting up machine.
•Always use coolant when sharpening plates.
•Always inspect the plates making sure all holes
are clear – that there are no cracks.
DON’Ts
•Never, never mix different knives to different
plates.
•Never, never over tighten the bowl retaining ring
on the machine.
•Never, never run the grinder/mincer without
product. Product is a natural lubricant. Heat can
build up so fast that cold product could crack
the plate.
•Never, never hit the plate against anything to
clean the holes.
•Never, never throw the knives & plates.
OPERATION
ROTATING GRINDING WORM
TO AVOID SERIOUS PERSONAL INJURY
ONLY Properly Trained Personnel Should Use This Equipment.
NEVER Place Hands Into Machine Input or Output Openings.
NEVER Open Machine During Operation.
DO NOT Wear Gloves While Operating.
DO NOT Tamper With, Bypass, Alter, or Modify This Equipment in Any Way From Its Original
Condition.
NEVER Operate Machine With Tray And/Or Tray Guard Removed or Magnetic Safety Switch
By-Passed.
ALWAYS Turn Off, Unplug From Power Source and Perform Lockout/Tagout Procedure to This
Machine Before Unjamming, Unclogging, Cleaning or Servicing.
NEVER Leave Unattended While Operating.
NEVER Operate Without All Warning Labels Attached and Owner/Operator Manual Available to
the Operator.
A. TO PROCESS PRODUCT
1. Before starting grinder, have meat stomper within easy reach and container for receiving ground product at
output end of grinding bowl.
2. Turn toggle handle 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 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 finished grinding turn toggle handle to “OFF” position and unplug grinder from power source and
perform lockout/tagout procedures.
6
DO NOT REACH DOWN BOWL OPENING

CLEANING
ROTATING GRINDING WORM
TO AVOID PERSONAL INJURY
ALWAYS Turn Off, Unplug From Power Source and Perform Lockout/Tagout Procedure to This
Machine BEFORE Cleaning or Servicing.
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.
CLEANING THE BIRO MODEL 346 GRINDER
1. Disconnect grinder from power source and perform lockout/tagout procedures.
2. Remove grinding bowl end ring, breaker plate, knife and grinding worm.
DO NOT POWER SPRAY DIRECTLY AT ELECTRICAL COMPONENTS
3. 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.
4. The grinding bowl can be removed for cleaning if desired. This is accomplished by unscrewing the bowl lock
handle under the grinding bowl.
5. After machine has been cleaned and allowed to air dry, all exposed metal surfaces should be coated with a good
food grade light oil or grease.
7
DO’s
•Always keep knife & plate as matched set.
•Always keep the knife & plate sharp.
•Always check for levelness by laying the knife on
the plate before inserting in machine.
•Always install the knife & plate in correct se-
quence, knife 1st, then plate.
•Always keep knives & plates lubricated in storage
and when starting up machine.
•Always use coolant when sharpening plates.
•Always inspect the plates making sure all holes
are clear – that there are no cracks.
DON’Ts
•Never, never mix different knives to different
plates.
•Never, never over tighten the bowl retaining ring
on the machine.
•Never, never run the grinder/mincer without
product. Product is a natural lubricant. Heat can
build up so fast that cold product could crack
the plate.
•Never, never hit the plate against anything to
clean the holes.
•Never, never throw the knives & plates.
CLEANING
ROTATING GRINDING WORM
TO AVOID PERSONAL INJURY
ALWAYS Turn Off, Unplug From Power Source and Perform Lockout/Tagout Procedure to This
Machine BEFORE Cleaning or Servicing.
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.
CLEANING THE BIRO MODEL 346 GRINDER
1. Disconnect grinder from power source and perform lockout/tagout procedures.
2. Remove grinding bowl end ring, breaker plate, knife and grinding worm.
DO NOT POWER SPRAY DIRECTLY AT ELECTRICAL COMPONENTS
3. 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.
4. The grinding bowl can be removed for cleaning if desired. This is accomplished by unscrewing the bowl lock
handle under the grinding bowl.
5. After machine has been cleaned and allowed to air dry, all exposed metal surfaces should be coated with a good
food grade light oil or grease.
7
DO’s
•Always keep knife & plate as matched set.
•Always keep the knife & plate sharp.
•Always check for levelness by laying the knife on
the plate before inserting in machine.
•Always install the knife & plate in correct se-
quence, knife 1st, then plate.
•Always keep knives & plates lubricated in storage
and when starting up machine.
•Always use coolant when sharpening plates.
•Always inspect the plates making sure all holes
are clear – that there are no cracks.
DON’Ts
•Never, never mix different knives to different
plates.
•Never, never over tighten the bowl retaining ring
on the machine.
•Never, never run the grinder/mincer without
product. Product is a natural lubricant. Heat can
build up so fast that cold product could crack
the plate.
•Never, never hit the plate against anything to
clean the holes.
•Never, never throw the knives & plates.
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.
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.
7. If water is exceptionally hard, drying will be necessary to prevent spotting.

MAINTENANCE
ROTATING GRINDING WORM
TO AVOID SERIOUS PERSONAL INJURY
ALWAYS Turn Off, Unplug From Power Source and Perform Lockout/Tagout Procedure to This
Machine BEFORE Servicing.
NEVER Touch This Machine Without Training and Authorization By Your Supervisor.
NEVER Place Hands Into Machine Input or Output Openings.
NEVER Bypass, Alter, or Modify This Equipment in Any Way From Its Original Condition.
PROMPTLY REPLACE Any Worn or Illegible Labels.
USE ONLY GENUINE BIRO Parts and Accessories Properly Installed.
A. GRINDING BOWL INSTALLATION
1. Mount the grinding bowl rear hub in the bearing box. Be sure grinding bowl is fully seated. Tighten bowl
lock handle. Hand tighten only.
2. Place the grinding worm in the grinding bowl and fully seat rear drive tang into worm drive shaft.
3. Install knife, breaker plate and end retaining ring.
ONLY HAND TIGHTEN RETAINING RING
4. When the bowl assembly is mounted and tight, there should be approximately 18" gap between the back
inside wall of the bowl and the back of the worm (SEE FIGURE 1). The bowl ring wrench which is provided
with each grinder is used only for REMOVAL of the end retaining ring for cleaning purposes or for changing
knife and breaker plate.
8

B. BEARING HOUSING LUBRICATION
1. Unplug grinder from power source and perform lockout/tagout procedures.
2. Unlatch tray, lift front slightly and slide toward back of machine. Lift tray from machine and set aside.
3. Unbolt case top cover and remove.
4. Check and relubricate with good grade of lithium bearing grease semi-annually.
5. Reinstall case top cover and bolt on tightly. Reinstall tray and latch securely.
C. ROLLER CHAIN AND DRIVE SPROCKET LUBRICATION
Chains should be protected against dirt and moisture. Chain life will vary appreciably depending upon lubrication.
The better the lubrication, the longer the chain life.
Lubrication effectiveness will vary with the amount of lubrication and frequency of application. Ideally, a lubricant
film should always be present between the working parts. Manually lubricate the chain after the 1st 6 weeks then ev-
ery 6 months thereafter.
Lubricating just the outside of the chain does little good. Apply lubrication on the inside of the chain span so that
it will work through the moving parts and joints by centrifugal force as the chain rotates and reach the area where one
surface “scrubs” another.
Recommended types of chain lubricant are those with Molybdenum Disulphide or Graphite added. Also bonded
lubricants such as Dow Corning’s Molykote 321R or equivalent are excellent for open chains. The lubricant should be
of a viscosity whereby it will “flow” somewhat and penetrate the internal working surfaces. Thick stiff greases are of lit-
tle value because they cannot work into moving parts of the chain.
Symptoms of inadequate lubrication:
1. Excessive noise
2. Chain becomes stiff.
3. Chain runs hot.
4. Broken pins, bushings or rollers.
5. Excessive chain elongation — caused by wear on the pin outside diameter and bushing inside diameter.
Once a chain is elongated or worn past acceptable limits, jumping of sprocket teeth and/or improper
chain/sprocket mesh will occur.
LUBRICATING CHAIN AND SPROCKETS
1. Unplug grinder from power source and perform lockout/tagout procedures.
2. Unlatch tray, lift front slightly and slide toward back of machine. Lift tray from machine and set aside.
3. Unbolt case top cover and remove.
4. Spray or brush lubricant on inside of chain, slowly and carefully turning large sprocket by hand.
5. Reinstall case top cover and bolt on tightly. Reinstall tray and latch securely.
C. MAIN DRIVE CHAIN TENSION
1. Unplug grinder from power source and perform lockout/tagout procedures.
2. Remove feed tray.
3. Loosen motor mounting bolts.
4. Remove shims from under the motor. Important to remove same shims from back of motor as from the
front for proper sprocket alignment.
5. Total chain flex should be 18"to38" for proper chain tension. Do not over tension as this can cause excessive
wear or premature failure of motor and bearing box bearings.
6. Retighten all motor mounting bolts.
7. Reinstall feed tray.
9

– NOTE –

– NOTE –
COUNTER-CLOCKWISE

12
ENTERPRISE PART NO. DESCRIPTION HC46S Bowl, SS HR42/48S End ring, SS HS46AS Worm assembly, SS
UNGER SYSTEM, 114MM PART NO. DESCRIPTION HC46-114 Bowl, Unger 114MM, SS HHS012S Hex head screw, 10-32 ´12, SS
HK114 Knife drive pin, 114MM HR42/48S-114 End ring, Unger 114MM, SS HS46A-114 Worm assembly, Unger 114MM, SS LW05S Lock washer, #10, SS 56049SK-114 Key, Unger 114MM, SS

3 PHASE SWITCH
WIRING & COMPONENTS
WIRING DIAGRAM FOR HEAVY HORSEPOWER
MANUAL FEED GRINDERS EQUIPPED WITH
AEG OR STROMBERG STARTERS
13
WIRING DIAGRAM FOR MODEL 346 HEAVY HORSEPOWER
MANUAL FEED GRINDER — 230 VOLT, 1 PHASE — EQUIPPED
WITH 3HP BALDOR CAPACITOR START MOTOR
SWITCHES & SWITCH COMPONENTS
H281AE-31 Overload B27S-N 208/220V-3PH
H281AE-32 Overload B27S-O 230V-1PH
H442 Magnet safety switch, up to 240V
H442-1 Magnet safety switch, above 240V
H478AE-ENCL-PB Enclosure w/pushbutton holes
H479AE-220 Contactor SP27.10-CO 208/220/230V
H479AE-380 Contactor SP27.10-DO 380/415V
H479AE-440 Contactor SP27.10-EO 440V
H479AE-550 Contactor SP27.10-FO 550V
H481AE-52 Overload B27S-L 380/440/550V
H482-1 Green push button
H482-2 Red push button
H578AE-10A Switch assembly BAEG/3X-C17 208/220V-3PH
H578AE-11A Switch assembly BAEG/3X-D8 308/415V
H578AE-12A Switch assembly BAEG/3X-E8 440V
H578AE-13A Switch assembly BAEG/3X-F8 550V
H578AE-14A Switch assembly BAEG/3XS-C23 230V-1PH

OPERATOR'S SIGNATURE PAGE
MY SIGNATURE ATTESTS THAT I HAVE COMPLETELY READ AND UNDERSTAND THIS MANUAL.
I REALIZE THAT THIS MACHINE, IF OPERATED CARELESSLY, CAN CAUSE SERIOUS INJURY TO
MYSELF AND OTHERS.
NAME (PRINT) SIGNATURE SUPERVISOR’S
INITIALS DATE
15

LIMITED WARRANTY
WARRANTY: The BIRO Manufacturing Company warrants that the BIRO Model 346 Grinder will
be free from defects in material and workmanship under normal use and with recommended ser-
vice. BIRO will replace defective parts, which are covered by this limited warranty, provided that
the defective parts are authorized for return, shipping charges prepaid, to a designated factory for
inspection and/or testing.
DURATION OF WARRANTY: The warranty period for all parts covered by this limited warranty is
one (1) year from date of inspection/demonstration as advised on the returned Warranty registra-
tion card, or eighteen (18) months from original factory shipping date, whichever date occurs first,
except as noted below.
PARTS NOT COVERED BY WARRANTY: The following are not covered by this limited warranty:
wearable parts in the grinding system such as bowl, worm drive shaft, ring, worm, and knife drive
pin. This limited warranty does not apply to machines sold as used, rebuilt, modified, or altered
from the original construction in which the machine was shipped from the factory. Water contam-
inated electrical systems are not covered under this limited warranty. BIRO is not responsible for
electrical connection of equipment, adjustments to switch components or any other electrical re-
quirements, which must be performed only by a certified electrician. BIRO is not responsible for
service charges or labor required to replace any part covered by this limited warranty or for any
damages resulting from misuse, abuse, lack of proper or recommended service.
EXCLUSION OF WARRANTIES AND LIMITATION OF REMEDIES: BIRO gives no warranties
other than those expressly stated in this limited warranty. THE IMPLIED WARRANTY OF MER-
CHANTABILITY, THE IMPLIED WARRANTY OF FITNESS FOR PROCESSING OF FOOD PROD-
UCTS, AND ALL OTHER IMPLIED WARRANTIES ARE SPECIFICALLY EXCLUDED. BIRO IS NOT
LIABLE FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES, EXPENSES, OR LOSSES. THE
REMEDIES PROVIDED IN THIS BIRO LIMITED WARRANTY ARE PURCHASER’S SOLE AND EX-
CLUSIVE REMEDIES AGAINST BIRO.
REGISTRATION CARDS: You must sign, date and complete the warranty registration card sup-
plied with each machine. The warranty card must be returned to The Biro Manufacturing Com-
pany for proper registration. If no warranty card is returned to BIRO, the warranty period will begin
from the date the machine was originally shipped from the factory.
HOW TO GET SERVICE:
1. Contact the agency from whom you purchased the machine; or
2. Consult the yellow pages of the phone directory for the nearest authorized dealer; or
3. Contact Biro Mfg. Company for the nearest authorized service entity (250 plus worldwide) in
your area.
THE BIRO MANUFACTURING COMPANY
1114 Main Street
Marblehead, Ohio 43440-2099
Ph. 419-798-4451
Fax [phone]
E-mail: Service@biro saw.com
Web: http://www.birosaw.com
16
ITEM NO. H500-203
PTCT HHP-203-10-04-9 COMM
ITEM NO. H500-203
PTCT HHP-203-12-09-11 PPD