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manual abstract
2002) – 2 – Operation and Care of the MODEL 4246 MIXER-GRINDER SAVE THESE INSTRUCTIONS GENERAL The Model 4246 Mixer-Grinder is designed to use #32-size knife and plate assemblies (not included with the unit). The Model 4246 is equipped with two drive systems. A 1-HP motor drives the heavy-duty steel mixing arm. A 5-HP motor drives the grinder worm in the Standard 4246S unit. There is a 71/2-HP motor, specifically powered for grinding mixed fresh and frozen meat in the Heavy-Duty 4246HD. The data plate is marked 6 HP (total) for the 4246S and 81/2 HP (total) for the 4246HD. The exclusive Hobart design #46 Wedge cylinder grinding end (Fig. 1) speeds product from hopper to grinding end by pulling pieces of meat through the large upper opening of the cylinder. The 4246 Mixer-Grinder may be ordered with any of the following options and/or accessories: • Pneumatic foot switch (can be added at any time) • Nonadjustable legs with casters • Adjustable legs with casters in two different height ranges The hopper lid is designed to open either from the left or the right, depending on your needs. Contact your Hobart Fig. 1 representative for further information. The mixing arm rotates at 23 rpm and the grinder worm at 216 rpm. The 4246 Mixer-Grinder hopper has meat capacity up to 140 lb (64 kg), depending upon the type of product. It has a grinding rate of 55 to 60 lb (25 to 27 kg) of fresh boneless beef per minute, first or second cutting through a 1/8" plate, and a grinding rate of 60 to 65 lb (27 to 29 kg) of fresh boneless pork per minute, second cutting through a 3/16" plate. The 4246HD unit is powered for processing frozen meat tempered to 26°F (-3°C) or higher; the meat can be in flake or stick form. – 3 – INSTALLATION UNPACKING Immediately after unpacking the mixer-grinder, check for possible shipping damage, If the mixer- grinder is found to be damaged, save the packaging material and contact the carrier within 15 days of delivery. Remove the packing box by loosening and removing the four bolts through the wooden skid. To set up the unit, follow the order of assembly below: 1. Legs, shipped in a separate box from the unit, require a 15/16" socket with torque to 50 ft-lb. 2. Lower side panels are packed on top of unit. 3. Remove the spanner wrench and the meat deflector, located inside the hopper. 4. Pneumatic foot switch, if ordered, is shipped in a separate box. Already assembled within the unit are the conveyor screw, mixing arm and cylinder. Remove the shipping plate and rubber spacer from the chopping end and replace with your #32 knife and plate assembly, not supplied. LOCATION Prior to installing the mixer-grinder, verify the electrical supply to make sure that it agrees with the specifications on the machine data plate, which is located under the hopper on the right. LEVELING Level the mixer-grinder, both front-to-back and side-to-side, by loosening the two set screws on the caster/leg shaft. Tighten both set screws when level. LUBRICATION The mixer-grinder is shipped with oil already installed. If oil loss is observed, the oil levels of both transmissions should be checked prior to operation. Contact a local Hobart Service Office. – 4 – PNEUMATIC FOOT SWITCH To install the pneumatic foot switch: 1. Remove screws from the lower front panel. PL-41742 PL-41743 Fig. 2 Fig. 3 2. On the front of the machine, locate the lower frame rail; approximately 4" (10.2 cm) from the left side, is a knockout hole for the foot switch control hose. Using a hammer and punch (Fig. 2), tap sharply to remove knockout piece in the sheet metal just beneath the frame rail. 3. Using pliers remove small pinch clamp from hose, save clamp. 4. Thread hose up through knockout hole (Fig. 3). 5. Slide pinch clamp onto hose approximately 2" (5.08 cm) from end of hose. 6. Route the hose around left corner of the control box. Avoid kinking the hose during installation. 7. A small metal nipple is located on the left side of the control box. Remove the protective cap and push hose tightly over the metal nipple. 8. Slide the clamp up the hose and place it within 1/4" (0.653 cm) of the hose end (Fig. 3) to ensure a proper seal. NOTE: Be absolutely sure hose and clamp are firmly secured to nipple; a loose fit may cause foot controls to malfunction. 9. Reinstall lower front panel with six screws. ELECTRICAL WARNING: ELECTRICAL AND GROUNDING CONNECTIONS MUST COMPLY WITH THE APPLICABLE PORTIONS OF THE NATIONAL ELECTRICAL CODE AND/OR OTHER LOCAL ELECTRICAL CODES. The mixer-grinder is provided with a cord and plug and only requires that it be connected to an appropriately sized, grounding-type receptacle. Refer to the machine data plate. – 5 – CHECK MOTOR ROTATION With the grinder cylinder in place and the hopper lid closed, check the rotation. Standing in front of machine, push the MIX/GRIND START button. Check that the mixing arm and worm rotate counterclockwise; press the STOP button to stop rotation. If the mixing arm and worm do not rotate count...