4732 & 4732A CHOPPERS
MODEL
4732 ML-18887 (PAINTED, NON-REMOVABLE PAN)
MODEL 4732 CHOPPER
ML-19282 (SST, NON-REMOVABLE PAN)
4732A ML-19689 (PAINTED, REMOVABLE PAN)
ML-19690 (SST, REMOVABLE PAN)
701 S. RIDGE AVENUE
TROY, OHIO 45374-0001
937 332-3000
www.hobartcorp.com
FORM 34747 Rev. A (March 2012)
Installation, Operation and Care of
4732 & 4732A Choppers
SAVE THESE INSTRUCTIONS
GENERAL
The 4732 and 4732A Choppers are equipped with a 3 HP motor that rotates the worm at 151 RPM. The
4732 and 4732A are designed to use a #32 size knife and plate. Knives and plates, available at extra cost,
are not included with the chopper.
The stainless steel feed pan on the 4732 is not removable and must be cleaned in place. Model 4732A
has a removable stainless steel feed pan and an interlock that requires the feed pan to be in place before
the machine can be turned on. On both models, a cast aluminum guard is permanently mounted to the
front and sides of the feed pan. Dimensions on the feed pan are 34" long x 21" wide x 5" deep. The motor
and switch housing is available in painted steel or stainless steel. The table models use 5
that provide 8" clearance between the table and the lowest point on the adjusting ring. Leg sets of other
heights (18" or 21") are available to convert the 4732 or 4732A into a fl oor model. Sausage stuffers for
hog or sheep casings are available accessories.
The chopper can grind 35 to 40 pounds of boneless beef per minute, fi rst cut, through a
second cut grind rate is 25 to 30 pounds per minute through a
°
to 24
F or higher before grinding and can be in either fl ake or stick form.
1
/8" plate. Frozen meat must be tempered
3
/8" high legs
1
/8" plate. The
INSTALLATION
UNPACKING
Immediately after unpacking, check for possible shipping damage. If the chopper is found to be damaged,
save the packaging material and contact the carrier within 15 days of delivery.
Remove the carton from around the machine. Remove the four bolts holding the machine to the skid.
Unpack the feed stomper.
Prior to installation, verify that the electrical service agrees with the specifi cations on the machine data plate.
Use the spanner wrench to loosen the adjusting ring. Unscrew and remove the adjusting ring using both
hands. Remove and discard the retaining washer and rubber pad used at the front of the worm where the
knife and plate are to be installed.
The chopper must be thoroughly cleaned and sanitized after installation and before operation. Refer to
CLEANING (page 7).
© HOBART, 2012
– 2 –
34"
INSIDE
21"
INSIDE
5"
4-1/16"
4-3/8"
DIM "B"
DIM "C"
33-5/16"
ON/OFF SWITCH MAY BE
MOUNTED FOR RIGH HAND
OR LEFT HAND OPERATION
ELECTRICAL CONNECTION HOLE
FOR 3/4" TRADE SIZE CONDUIT
(1-1/16 DIA HOLE)
17-3/8"
WARNING
ELECTRICAL & GROUNDING CONNECTIONS MUST COMPLY WITH
THE APPLICABLE PORTIONS OF THE NATIONAL ELECTRICAL
CODE AND/OR OTHER LOCAL ELECTRICAL CODES.
20-1/8"
8-1/2"
1-3/8"
DIM "A"
12-1/2"
1-5/16"
ACCESS FOR
ELECTRICAL
POWER CONNECTION
15-1/4"
MACHINE HEIGHT FOR LEG OPTIONS
LEGS DIM "A" DIM "B" DIM "C" MODEL
5-3/8"
STD
18"
OPT
21"
OPT
27"
27-3/8"
39-5/8"
40"
42-5/8"
43"
10-3/4"
23-3/8" 18"
26-3/8" 21"
5-3/8"
4732
4732A
4732
4732A
4732
4732A
00-088182
Fig. 1
LEGS (FIGS. 1 & 2)
The four leg assemblies are packed in a separate
carton for shipment. The standard legs (5
3
/8" high)
allow the rim of the feed pan on the table model to
LEG
LEG (18" or 21")
be 27" above the table surface. These legs have
neoprene feet and require assembly. To assemble
3
5
/8" high legs: Slide the Leg Stud through the Leg End
Cap and the Leg; then thread the Leg Stud into the
base of the machine (Fig. 2). Do not overtighten; the
legs need only be hand-tight. Thread the Neoprene
Foot into the Leg Stud (Fig. 2).
LEG END CAP
LEG STUD
NEOPRENE FOOT
FOOT
PL-56170
Fig. 2
Floor model choppers are equipped with optional 18" or 21" legs. Each Leg is one piece and threads into
the base of the machine at the four corners. These Legs can be adjusted by threading the Feet in or out
as necessary (Fig. 2) to level and stabilize the chopper.
– 3 –
ELECTRICAL CONNECTION
Electrical and grounding connections must comply with the applicable portions of
the national electrical code and/or other local electrical codes.
Disconnect electrical power supply and place a tag at the disconnect switch indicating
the circuit is being worked on.
A 11/16" diameter hole for 3/4" trade size conduit is located in the bottom panel. Remove access panel from
the back of the unit. Refer to the machine data plate and the wiring diagram located on the machine for
proper sizing of branch circuit. Upon completion, fasten the access panel in place with screws.
ACCESS PANEL
CONDUIT CONNECTOR
(Supplied by customer)
THREE PHASE MACHINES
Three phase machines must be connected so that the attachment drive runs counterclockwise when
facing the hub. To check the direction of rotation, turn the chopper on momentarily. If rotation is not correct,
DISCONNECT ELECTRICAL POWER SUPPLY and interchange any two of the incoming power supply
leads. Reconnect power to the chopper. Turn the chopper on momentarily to verify correct motor rotation.
– 4 –
OPERATION
Do not operate without guard over feed opening. Do not put hands into feed opening.
Use feed stomper.
After cleaning, assemble chopper Cylinder, Worm, Knife, Plate and Adjusting Ring (and Feed Pan on model
4732A) as discussed in cleaning, page 7, and Fig. 3 or Fig. 4. Place the Defl ector over the Adjusting Ring.
• To start the chopper, pull the Start-Stop Switch Knob (Fig. 3 or Fig. 4).
• To stop the chopper, push the Start-Stop Switch Knob.
The fi neness of cut depends on the hole size of the chopper's Plate. The Knife and Plate must be kept clean
and sharp for a fi ne cut. The tightness of the Adjusting Ring does not regulate fi neness of cut; therefore
only moderate tightness is recommended. The Adjusting Ring should be only hand-tight.
Cut the meat into chunks about the size of a fi st and place in the Feed Pan. Feed meat under the guard
and into the Feed Pan opening. Use the Feed Stomper to dislodge over-sized pieces or to dislodge meat
which may become stuck in the Feed Pan opening or the cylinder opening. It is not necessary to force
meat through the chopper.
When the product is run through the chopper a second time, more speed is attained by feeding small
quantities at a time. Allow the machine to feed at its own rate.
MODEL 4732
NON-REMOVABLE
FEED PAN
DEFLECTOR
WORM
ADJUSTING RING
FEED STOMPER
PLATE
KNIFE
CYLINDER
PLUG BUTTON
Fig. 3
OIL DRAIN PLUG
OIL-FILL PLUG
START - STOP
SWITCH KNOB
MACHINE DATA
PLATE
PL-56289
– 5 –
MODEL 4732A
DEFLECTOR
REMOVABLE
FEED PAN
FEED STOMPER
PLATE
WORM
ADJUSTING RING
KNIFE
CYLINDER
FEED PAN
LOCKING KNOB
PLUG BUTTON
Fig. 4
OIL DRAIN PLUG
OIL-FILL PLUG
START - STOP
SWITCH KNOB
MACHINE DATA
PLATE
PL-56290
– 6 –
CLEANING
Disconnect electrical power supply and place a tag at the disconnect switch indicating
the circuit is being worked on before cleaning, servicing or removing parts.
The chopper should be thoroughly cleaned at the end of each day or any time it is not to be used for an
extended period of time.
On model 4732A only, rotate the Feed Pan Lock Knob
counterclockwise to unlock the pan (Fig. 5). Slide the
Feed Pan toward the chopping attachment until the
pan is free of the alignment brackets. Lift off the Feed
Pan and take it to a sink for cleaning. On model 4732,
the Feed Pan is permanently attached and must be
cleaned in place.
Pull the Defl ector straight up to remove it. Using the
spanner wrench, loosen the Adjusting Ring. Unscrew
and remove the Adjusting Ring with both hands. Hook
the spanner wrench around the Worm stud and pull the
Worm end out of the Cylinder. Remove the Knife and
Plate and then the Worm. Place the removed parts in
a sink for cleaning.
FEED PAN LOCK KNOB
PL-41632-1
Fig. 5
Using the spanner wrench, loosen but do not remove the cylinder nuts. With one hand on bottom of
Cylinder for support (it is heavy), turn the Cylinder clockwise and remove to a sink.
Thoroughly clean all removed parts in a sink using hot soapy water and sanitize them. Wipe machine
housing with a damp cloth.
Prior to reassembly, apply a light coating of tasteless mineral oil to the inside of the Cylinder, the threads
on the Cylinder and the Adjusting Ring, the Worm edges, the Knife and Plate and any other exposed
(non-plated) metal surfaces.
To reassemble the machine, fi rst install the Cylinder by rotating it counterclockwise until the ears are under
the cylinder nuts. Tighten the cylinder nuts fi nger-tight.
Slide the Worm into the Cylinder and rotate it to engage the square shank with the attachment drive.
With the spanner wrench, tighten the cylinder nuts.
Do not over-tighten the cylinder nuts.
Install the Knife (cutting edges out) and the Plate. Screw the Adjusting Ring on hand-tight.
To install the Feed Pan (model 4732A only), slide the alignment bracket (on the bottom of the pan) onto
the alignment foot on the chopper housing. Make a visual check to make sure the Feed Pan is squarely
on top of the machine. Push the Feed Pan Locking Knob in and rotate it 90
o
clockwise.
Store the Feed Stomper as shown in Fig. 3 or Fig. 4.
– 7 –
MAINTENANCE
LUBRICATION
During normal operation, gear case oil may require changing due to condensate mixing with the oil. Gear
case oil that has mixed with condensate water will have a milky brown color. If this is present, the oil
should be replaced.
To change the gear case oil, place a suitable catch pan under the machine
and remove the Drain Plug (Fig. 3 or Fig. 4). When old oil is completely
PLASTIC OIL-FILL PLUG
drained, replace the Drain Plug. Fill the gear case with 21 fl uid ounces
of Mobilgear 634 as follows: Remove the Plug Button (Fig. 3 or Fig. 4);
FULL LINE
then remove the Plastic Oil-Fill Plug (Fig. 6). Pour the proper amount of
Mobilgear 634 into the elbow. The gear case is full when the oil is at the
bottom thread level of the elbow (Fig. 6). Thread the Plastic Oil-Fill Plug back
into the elbow, fi nger-tight. Press the Plug Button back into the hole of the
chopper housing. The chopper requires no other lubrication maintenance.
PL-56171
Fig. 6
TROUBLESHOOTING
SYMPTOM POSSIBLE CAUSE
Chopper will not operate. Electrical power not connected.
Circuit Breaker tripped or fuse blown.
On model 4732A, removable pan is not
assembled properly; interlock is not engaged.
If the above suggestions do not remedy the
situation, contact Service.
SERVICE
Contact your local Hobart-authorized Service Offi ce for any repairs or adjustments needed on this equipment.
FORM 34747 Rev. A (March 2012) PRINTED IN U.S.A.
– 8 –
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