Ross TC700MC, TC700M Operator's Manual

MODEL TC700MC

TENDERIZER

MADE IN USA

Midland, Virginia 22728
Phone: [phone]
[phone]

Fax: [phone]

Ross Industries, Inc.

MN700-MC0010

MN700-MC0010

INTRODUCTION

OPERATOR’S MANUAL

MODEL TC700M/MC TENDERIZER

The ROSS TC700M/MC Tenderizer is a blade-type mechanical tenderizer. The ROSS
blades are narrow and very sharp so that they actually cut their way through meat tissues and
fibers and not merely punch holes by finding paths of least resistance. The special stainless
steel alloy blade has a tensile strength of approximately 300,000 pounds per square inch
which provides exceptional edge durability combined with extreme toughness. The ROSS
Tenderizers can process bone–in meat that is up to 7” high and 12” wide. The most
significant technological breakthrough in mechanical tenderizers has been the ROSS system
for tenderizing meat with the bones left in.

The ROSS blades are actuated by magnetic head plates so that each blade is actually
driven through the meat by magnetic force. These head plates consist of a sophisticated
array of rare-earth magnets and special electrical steel pole pieces. The magnets provide just
enough force to drive the blades through the toughest meat, but no more. When a ROSS
blade hits anything tougher than meat, the magnetic force is overcome and the individual
blade simply stops trying to penetrate – the blade is, therefore, undamaged and the other
blades are allowed to fully penetrate the meat.

The 700M/MC Tenderizer provides the utmost in safety to operating personnel by
incorporating pivoted guards that completely cover the operating area of the Tenderizer.
Magnetically operated switches are built in the guard mechanism in such a manner that both
guards must be closed before the machine will operate. If either guard is opened while the
machine is running, power will be removed from the main motor and all operation will stop.

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SAFETY FIRST!

DANGER –

THIS SYMBOL INDICATES HIGH VOLTAGE INSIDE
MARKED HOUSING

THIS SYMBOL INDICATES SHARP KNIFE INSIDE MARKED
HOUSING

Take a moment to note the areas on the machine where serious injury may occur if
proper safety precautions are not adhered to.

The ROSS Tenderizer has been carefully designed so that during normal use, the operator is
never exposed to dangerous moving parts.

The entire tenderizing head is enclosed by stainless steel safety guards that incorporate an
electronic interlock switch. The machine will not operate unless the guards are properly closed.

• • NEVER operate the Tenderizer if the safety guards have been removed or if the electronic
interlock switch is not working properly.

NEVER reach under safety guards while machine is running.

If you have any questions concerning the proper, safe operation of your Tenderizer, please

contact your local ROSS Dealer or the ROSS Customer Service Department.

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DAILY CLEANING PROCEDURE

NOTE:

USE ONLY NEUTRAL pH DETERGENTS AND SANITIZERS.

1) Remove Blade Assemblies from machine.

2) Inspect Blade Assemblies and remove any bent blades.

3) Clean Blade Assemblies with a mild neutral pH detergent
solution. Blade Assemblies may be immersed in this solution
for up to ten (10) minutes.

4) With Blade Assemblies removed, clean entire machine with a
mild neutral pH detergent and a stiff brush. SPECIAL
ATTENTION SHOULD BE GIVEN TO THE UNDERSIDE OF
THE LOWER GUIDE FRAME.

5) Flush Blade Assemblies and machine with clean hot water or
steam. All traces of detergent must be removed.

6) Sanitize entire machine using only neutral pH sanitizers.

7) Rinse machine and Blade Assemblies with clean hot water.

8) Liberally spray the Magnetic Head Plates, Blades, Guide
Uprights, Main Uprights and Seals with ROSS 601 Oil.

9) Replace Blade Assemblies in machine.

CAUTION:

NEVER USE CAUSTIC CLEANING SOLUTIONS ON THE ROSS
TENDERIZER. DAMAGE TO MAGNETIC HEAD PLATES AND
SEALS WILL RESULT.

NEVER LET MAGNETIC HEAD ASSEMBLIES SOAK IN
CLEANING SOLUTION LONGER THAN TEN (10) MINUTES.

For more detailed instructions on Cleaning and Lubrication, refer to the Operating Procedures

Section of the Instruction manual.

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TABLE OF CONTENTS

INTRODUCTION.................................................................................................................................................................................i

SAFETY FIRST! .................................................................................................................................................................................ii

DAILY CLEANING PROCEDURE...................................................................................................................................................iii

1 SPECIFICATIONS .........................................................................................................................................................1-1

2 DESCRIPTION................................................................................................................................................................2-1

2.1 MECHANICAL .......................................................................................................................................................2-1

2.2 ELECTRICAL .........................................................................................................................................................2-1

3 INSTALLATION.............................................................................................................................................................3-1

3.1 UNCRATING..........................................................................................................................................................3-1

3.2 INSTALLATION.....................................................................................................................................................3-1

3.3 ELECTRICAL REQUIREMENTS..........................................................................................................................3-2

3.4 POWER PHASING.................................................................................................................................................. 3-3

3.5 INSTALLATION CHART.......................................................................................................................................3-4

4 SPARE PARTS................................................................................................................................................................4-1

5 ILLUSTRATIONS...........................................................................................................................................................5-1

5.1 GUARD/SAFETY SWITCH ...................................................................................................................................5-1

5.2 HEAD CARRIER ASSEMBLY...............................................................................................................................5-2

5.3 HEAD ASSEMBLY.................................................................................................................................................5-3

5.4 CONVEYOR DRIVE ASSEMBLY.........................................................................................................................5-4

5.5 CONVEYOR ASSEMBLY......................................................................................................................................5-5

5.6 MOTOR/REDUCER ASSEMBLY..........................................................................................................................5-6

5.7 CAM DRIVE ASSEMBLY......................................................................................................................................5-7

5.8 CAM ASSEMBLY...................................................................................................................................................5-8

5.9 RETURN SPRING/CAM ASSEMBLY ................................................................................................................... 5-9

5.10 TOGGLE CLAMP/RETURN SPRING ASSEMBLY ........................................................................................... 5-10

5.11 MAIN FRAME/ROCKER BAR CAM FOLLOWER............................................................................................5-11

6 OPERATION...................................................................................................................................................................6-1

6.1 MACHINE OPERATION........................................................................................................................................6-1

6.2 CLEANING AND BLADE REPLACEMENT ........................................................................................................6-2

6.3 HEAD ASSEMBLY INSTALLATION...................................................................................................................6-4

7 MAINTENANCE.............................................................................................................................................................7-1

7.1 INSPECTION...........................................................................................................................................................7-1

7.2 LUBRICATION....................................................................................................................................................... 7-1

7.3 ADJUSTMENTS/SPECIFIC REPAIRS..................................................................................................................7-2

7.3.1 CONVEYOR BOX................................................................................................................................................7-2

7.3.2 HEAD HEIGHT ADJUSTMENT.........................................................................................................................7-3

7.3.3 HEIGHT ADJUST CAM MECHANISM..............................................................................................................7-4

7.3.4 RESET PAD/PLATE CLEARANCE.....................................................................................................................7-4

7.3.5 TOGGLE RING REPLACEMENT.......................................................................................................................7-5

8 TROUBLESHOOTING..................................................................................................................................................8-1

9 WIRING/SCHEMATIC..................................................................................................................................................9-1

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1 SPECIFICATIONS

ROSS

PERFORMANCE IN STAI NLESS

WEIGHT 1000 pounds
SIZE Length: 52”; Width: 24”, Height: 62”
ELECTRICAL

Voltage: The 700MC can be supplied to operate from any of the standard world wide three phase power
system supplying from 208 to 575 volts.

Frequency: The frequency can be either 50 or 60Hz.
Full Load current: The full load current depends on the actual line voltage and frequency; two examples

are 7.6 amps @ 208 volts, 60Hz and 4.55 amps @460 volts @ 60Hz.
Power cord/Plug cap: The 700MC tenderizer is supplied with a power cord made from approximately 25

ft of SO 4/12 cable terminated with an approved plug cap. Machines ordered for operation on low
voltages (208 – 240 volts) are supplied with a plug cap conforming to NEMA L15-20P. Machines for 440
– 480 volts are supplied with a plug cap conforming to NEMA L16-20P. Machines for 575 volts are
supplied with a plug cap conforming to NEMA L17-20P. Machines for 380/415 service at 50Hz are
supplied with the appropriate pin and sleeve type plug cap conforming to IEC-309.

Branch circuit protection: The installer must provide external branch circuit protection with either time
delay fuses or an appropriate motor rated circuit breaker suitable for a 2 HP three phase motor.

PROCESSING RATE: Up to 6500 pounds per hour. Typical rates are 2000 to 3250 pounds per hour.
AMBIENT TEMPERATURE FOR OPERATION: 30 TO 80 degrees F.
TEMPERATURE RISE IN PRODUCT: None

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2 DESCRIPTION

2.1 MECHANICAL

When the 700MC is turned on with the guard(s) in the closed position, the head assembly reciprocates.
The conveyor advances when the blades are fully retracted at the top of each stroke.

The meat to be tenderized is simply placed on the conveyor. The powered conveyor advances the
product under the blades. Any blade that strikes a bone will automatically stop its downward stroke while
the other blades will continue to penetrate the meat. As the blades return to the top of the stroke, the
retracted blades are pushed back into position by the soft plastic reset pads.

The blade assemblies are mounted between two “H” shaped stainless steel frames, the head frame and
the guide frame. The head frame is bolted to the top of the one and one-half inch diameter main
uprights. The guide frame is mounted below the head frame on the smaller one inch diameter guide
uprights.

The main and guide uprights extend through the top of the cabinet and are guided by oil-impregnated
bronze bearings. These bearings are held in the main frame casting that is bolted to the underside of the
top of the cabinet. The lower ends of the main uprights are bolted to the cam plate. This is driven by a
cam roller attached to the crank cam on the output shaft of the transmission. The transmission is driven
by a two horse power electric motor. The lower ends of the guide uprights extend through the toggle
clamp assemblies and guide raisers. The guide raisers with their cushions are attached to the main
uprights and the clamp pivots are attached to the guide uprights.

As the 700MC makes its downward stroke, the head and guide frames descend until the guide frame
contacts the meat. At this point, the guide frame stops while the head frame continues downward to the
bottom of the stroke. The guide frame is locked on the stationary toggle rods by the toggle assembly.
This holds the meat down on the conveyor belt as the head frame travels upward withdrawing the blades.
As the main uprights and the guide raisers reach the clamp pivots at the position where the guide frame
had been locked, the unlock cushion lifts and levels the toggle clamp. With the toggle clamp level, the
toggle rings release allowing the guide uprights and guide frame to rise to the top of the stroke.

The crank cam also actuates the cam follower assembly and rocker arm for the conveyor advancement.
The cam follower causes the rocker arm to pull down on the pull rod, operating the bell crank. The bell
crank causes the push rod to operate the index arm. As the index arm moves, the pawl on the index arm
engages a tooth on the index wheel causing the conveyor to advance one increment. As the index wheel
advances, a serpentine track on the cam drive wheel causes the conveyor to move side to side
producing the proper interdigitation of the blades to maximize tenderization. The crank cam is designed
to have the rocker arm and conveyor drive advance the conveyor just as the head assembly is near the
top of its stroke with the blades out of the product.

2.2 ELECTRICAL

The electrical control system is located in a sealed compartment at the input end of the Tenderizer
cabinet. The control system includes a control transformer, fuses, motor starter, phase sensor, and relay.
The electrical schematic, MN045770, is located at the rear of this manual. The incoming three-phase
power is connected between terminals 1, 2 and 3 of the main terminal block. It is then fed through the

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disconnect switch (S1) to the line terminals L1, L2 and L3 of the motor starter (K1) and to terminals 3, 4,
and 5 of the phase sensor.

A single-phase connection from the incoming power is applied to the primary of the control transformer
(T1) through fuses F2 and F3. The control transformer is designed with tapped primary and secondary
windings allowing it to be connected such that a control voltage of approximately 120 VAC may be
obtained from a wide range of line voltages. The 120 VAC control voltage is used to energize the coils of
the motor starter (K1) and relay (K2) as well as the head adjusting motor circuit.

Power from the secondary of the control transformer is fed through the POWER switch (S2) to fuses F4
and F5. The load side of fuse F5 is connected to terminals 1 and 8 of relay K2 and to one side of the
START switch (S3). With the machine connected to the proper electrical power source, the disconnect
switch turned on and the POWER switch pulled out, pressing the START switch will energize relay K2
through guard switch S7 providing the guard is closed. When K2 pulls in, contacts 8 – 6 of K2 feed 120
volts to one end of the motor starter’s coil (K1) and contacts 1 - 3 latch K2 in allowing the START switch
(S3) to be released. S8 is an E-stop switch mounted at the rear of the machine.

Although the vertical reciprocating motion of the Tenderizer head is unaffected by the rotational direction
of the main drive motor, if the motor was to operate in the reverse direction, the drive to the conveyor
would occur with the blades partially down. Under these conditions, the conveyor would attempt to move
with the blades still inserted in the product. To prevent this from happening, a phase sensor (A1) is
incorporated in the electrical system to keep the motor starter from being energized unless the incoming
power is correctly phased.

Terminals 3, 4, and 5 of the phase sensor are connected to the incoming power allowing the phase
sequence to be sensed. If they are in the correct sequence, an internal solid state relay connects
together terminals 1 and 8 of the phase sensor. Terminals 1 and 8 are connected in series between the
return side of the motor starter’s coil and the 0 volt connection fromT1, thus with the proper power
phasing, the motor starter will pull in applying the three phase power to the main motor and the machine
starts operating.

120 volts from the transformer through the POWER switch and fuse F4 is applied to the bridge rectifier
(CR1). The DC terminals of CR1 are connected to the head adjusting motor through the HEAD
ADJUSTING switch (S4) and limit switches (S5 and S6). S4 is a two position switch with four contact
blocks connected so as to allow reversal of the polarity of the DC voltage that is applied to the head
adjusting motor (M2) through terminals 4, 5 and 6. One side of M2 is connected to terminal 4 while the
other side of the motor is connected through the limit switches (S5 and S6) to terminals 5 and 6. The
HEAD ADJUSTING switch has no ‘off’ position, when either the HIGH or STD positions are selected, the
motor will operate until the head assembly reaches the selected position and the appropriate limit switch
opens.

Once started, the tenderizer will continue to operate until either the disconnect switch is turned off, the
POWER switch is pushed in or one of the guards is opened. Restoring any of these devices will NOT
allow the machine to start, the START switch must be pressed.

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3 INSTALLATION

3.1 UNCRATING

The 700MC Tenderizer is shipped in an enclosed crate. The Tenderizer is supported by a wooden skid
with wooden framing at the ends of the cabinet. The overall assembly is covered with clear polyethylene
film and placed in a complete wooden crate.

Prior to uncrating the Tenderizer, inspect the condition of the packing material; any external damage may
have resulted in damage to the Tenderizer itself. After the Tenderizer is uncrated and removed from the
skid, it should be thoroughly checked for visual damage to the cabinet, casters, safety guards and the
head assembly.

Any damage to the Tenderizer should be reported to the shipper immediately. If the external packing
material had been disturbed or torn and visual damage to the Tenderizer itself can be seen, the
Tenderizer should not be uncrated until the shipper’s representative has been notified.

The Tenderizer is uncrated by first removing the top and sides of the crate and then cutting the two steel
bands that hold the base cabinet to the wooden skid. The 2 x 4 end brace is removed from end of the
skid frame. The Tenderizer must then be lifted slightly by prying between the side rails of the skid frame
and the bottom edge of the base cabinet.

As the cabinet is raised, the support blocks under each end can be removed and the Tenderizer lowered
on the skid with the casters supporting it. Before lowering the cabinet, the casters should be aligned so
the Tenderizer can easily be rolled from the skid. Use the 2 x 4 end brace that was removed as a step
ramp at the end of the skid and roll the Tenderizer slowly from the skid to the floor, being careful not to
damage the casters.

3.2 INSTALLATION

The 700MC Tenderizer does not need any installation, as such, since it is considered a portable
electrically operated appliance and need simply be rolled into position, have its power cord plugged into a
suitable outlet, and it is ready to operate. There are, however, certain site requirements to consider. In
as much as the Tenderizer weighs 1,000 pounds and is mounted on casters, the floor on which it is to
operate must be sound, level, and capable of supporting the Tenderizer, as well as the operating
personnel, meat lugs, etc.

The casters that are furnished with the Tenderizer are designed to support its weight, as well as the
shock loads that may be transmitted to them during the normal operation of the machine. The casters
allow the Tenderizer to be moved around on any hard, smooth-surfaced floor. Rolling the Tenderizer
over uneven floors or over cracks or expansion joints in the floor will greatly shorten the life of the
casters. Prior to the actual failure of the casters, they will cease to swivel properly, resulting in extreme
difficulty in moving the Tenderizer even on a smooth surfaced floor.

If it is necessary to move the Tenderizer over poor floor surfaces, as much care as possible should be
used to avoid excessive shock to the swivel axis of the casters. When moving the Tenderizer, it should
be pushed or pulled by the cabinet and NOT by the safety guards or head assembly. Any attempt to

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move the Tenderizer by pushing or pulling on the guard assembly can result in misalignment of the
guards. This can result in the safety switches being inoperative, which would prevent the Tenderizer
from operating.

3.3 ELECTRICAL REQUIREMENTS

The Model 700MC Tenderizer can be supplied to operate from any of the standard world wide three
phase line voltages. This would include the following: 208, 220, 230, 240, 380, 415, 440, 460, 480 and
575 volts. The supply frequency can be either 50 or 60 Hz. When the Tenderizer is ordered, the actual
plant line supply must be stated, such as 225 volts at 60 Hz. The tenderizer would then be properly set
up to operate from that electrical supply. A subsequent deviation of up to plus or minus 10% would have
little or no effect on the operation or longevity of the Tenderizer. An exception to this would be to place
an absolute minimum on the operating voltage at 200 volts.

The main drive motor in the 700MC tenderizer will operate from line voltages of 208 through 480 volts at
either 50 or 60 Hz. A different motor is required for operation from 575 volt lines. Changing the
Tenderizer for operation on any voltage between 208 and 480 volts requires only minor changes and can
easily be done in the field. Changing to operation from 575 volt lines requires replacement of the main
drive motor. Replacement of the motor can certainly be done in the field, but it is somewhat involved as
the cam and transmission must be removed to gain access to the motor. Machines supplied for
operation from 575 volt lines are furnished with a motor and transformer designed for that specific
voltage.

The various items that may need to be changed or reconnected to match a particular line voltage are: the
motor itself, the heaters and overload in the motor starter, the phase sensor and line cord. The chart on
page 3-4 illustrates the various items required for different line supplies. The numbers after MAIN
MOTOR refers to the part number of the motor required for the selected supply. The MOTOR WIRING
refers to the connections in the motor junction box for the selected supply. The actual connections are
given on the motor’s nameplate. The numbers after the HEATERS, PHASE SENSOR, LINE CORD
ASSEMBLY AND FUSES refer to the part numbers of the affected parts. The OVERLOAD SETTING
gives the required adjustment of the overload on the motor starter and is given in percentage
corresponding to the dial markings on the overload.

The overload section of the motor starter provides running overload protection for the main drive motor.
Fusing the primary and secondary of the control transformer provides protection of the control circuits
and the head adjusting motor. There is no protection from direct short circuits in the main motor, this
must be provided by the proper external branch circuit protection as defined by the applicable electrical
codes relating to a 2 HP three phase motor.

When operating from any of the low voltage ranges (200 – 240 volts), the branch circuit should be
protected to 20 amps with either dual element (time delay) fuses or a motor rated time delay three pole
circuit breaker. The correct receptacle to be used would be one that meets NEMA L15-20R. The branch
circuit protection required for any of the higher voltage ranges should be 20 amps with either dual
element (time delay) fuses or a time delay circuit breaker. The correct receptacle to be used would be
one that meets NEMA L16-20R for 440-480 volt lines or L17-20R for 575 volt lines.

The Tenderizer is furnished with a power cord made from approximately twenty feet of SO – 4/12 and
terminated with the appropriate plug cap. Substitution of the supplied plug cap with a non-approved type
is entirely at the owner’s risk and any consequence that may result is the owner’s responsibility.

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3-2

NOTE - Always turn the main power switch OFF before connecting the machine to a power source. If

the machine is plugged in with the main power switch ON and the head adjusting motor operating, the
primary transformer fuses may blow. This is due to the high magnetizing in-rush current of the
transformer added to the reflected starting load of the motor

.

3.4 POWER PHASING

As with all three-phase motors, the phase sequence of the incoming power determines the direction of
rotation of the motor in the Tenderizer. Although the vertical reciprocating motion of the Tenderizer head
is unaffected by the rotational direction of the motor, if the motor was to operate backwards, the drive to
the conveyor would occur when the blades were partially down. Under these conditions, the conveyor
would attempt to move with the blades still inserted in the product. To prevent this from happening, a
phase sensor is incorporated in the electrical system to prevent the main motor’s starter from being
energized unless the incoming power is correctly phased.

After the Tenderizer has been set up and made ready to operate, the phasing of the incoming power
should be checked. Plug the power cord into the receptacle provided and pull the main power switch out
to the ON position. With the guard completely closed, press the START button. If the machine starts
and continues to operate, the phasing of the incoming power is correct and no further changes are
necessary. However, if when pressing the START button nothing happens, the phasing of the incoming
power may be incorrect.

To correct the phasing, two of the conductors in the power cord must be interchanged. If a separate
branch circuit disconnect box is provided for the Tenderizer, then it would be best to interchange two of
the wires inside the box; however, if the same circuit is used for other machines that are phase sensitive,
then the correction will have to be made in the plug cap on the Tenderizer’s line cord. Disassemble the
plug cap and interchange any two of the main conductors (black, white, or red wires). Do NOT change
the position of the GREEN wire; this is the ground wire and connects directly to the cabinet of the
Tenderizer. Connecting this wire to any other position in the plug cap would result in the Tenderizer
cabinet being electrically “hot” with respect to the building ground, an extremely dangerous condition.

After correcting the phasing of the incoming power, check the operation of the Tenderizer again. If it still
fails to operate, refer to the TROUBLESHOOTING section of this manual

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3.5 INSTALLATION CHART

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4 SPARE PARTS

SPARES LIST

VOLTAGE-DEPENDENT COMPONENTS IDENTIFIED WITH AN “*”

VOLTAGE DESCRIPTION PART NO.

ALL FUSE, 1 AMP, (F5) 14140013

ALL FUSE, 2A (F4) 14140023
200-219 *FUSE 2.5 AMP 600V, (F2, F3) 14140119
220-240 *FUSE 2 AMP 600V, (F2, F3) 14140195
380/415 *FUSE 1.5 AMP 600V, (F2,, F3) 14140194
440-575 *FUSE 1 AMP 600V, (F2, F3) 14140132
200-480 *PHASE MONITOR (A1) 14160527

575 *PHASE SENSOR ASSEMBLY (A1) 09019180
200-240 *HEATERS FOR K1, 7A (3 EA) 14050070
380-480 *HEATERS FOR K1, 3.7A (3 EA) 14050074

575 *HEATERS FOR K1, 3.3A (3 EA) 14050067

ALL DISCONNECT SWITCH (S1) 14120367

ALL RELAY, (K2) 14050005

ALL TRANSFORMER, (T1) 14080025

ALL START SWITCH, (S3) 09078501

ALL POWER SWITCH, (S2) 09093610

ALL MOTOR STARTER, (K1) 14050066

ALL HEAD ADJUSTING SWITCH (S4) 09093620

ALL RECTIFIER (CR1) 14050016

ALL REED SWITCH (S7) 09019250

ALL PIN 11090021

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