M Metalfab, Inc. Dry Solids Processing Equipment P.O. BOX 9, PRICES SWITCH ROAD, VERNON, NEW JERSEY 07462 ♦ 973-764-2000 ♦ FAX # 973-764-0272 INSTRUCTIONS FOR OPERATION & MAINTENANCE MetaTech MT-X-XXX Series VOLUMETRIC SCREW FEEDER Fig A.
The MetaTech Feeder is a simple, rugged and accurate Volumetric Feeder used for the dependable metering of dry solid materials into a variety of manufacturing processes. It consists of a trough assembly. a hopper in various capacities, a GearMotor Drive (which is available in many input power configurations and ratios), a Metering Screw and Tube in sizes and styles to fit the application.
amperage for inrush consideration. 230/3 models will draw exactly double the 460/3 ratings. DC Motors are available with field windings (shunt wound) or permanent magnet, both are available in 90vdc (std _ Hp) and 180vdc (std 1Hp) armatures. DC motor speed is modulated by varying the armature voltage from 0 to max, 15% speed should be considered the min speed for motor cooling considerations Operation After the Feeder is in place and wired, it is ready for operation.
Standard Inverter Duty Gearmotor fig B. The hopper may be equipped with a pneumatically or electrically operated vibrator if the feed product requires an assist to promote flow. The hopper is also equipped with a baffle when a vibrator is used. The amount of vibration should be minimal, just enough to promote flow. The vibrations of the pneumatic vibrator may be adjusted by changing the P.S.I. setting (pressure regulator, filter, gauge, etc., by customer), but should not exceed a maximum pressure of 80 P.
develop the maximum force available. Under all conditions, the OUTER weights should be a mirror image of each other and the INNER weights should be a mirror image of each other so that the imbalance of the vibrator is uniform on both ends of the vibrator motor shaft. Any other arrangement could cause damage to the hopper, welds and the feeder in general. Maintenance Fig C. The MT Series Feeders are reasonably maintenance free. Listed below are suggested maintenance schedules: 1.
Wear rate is dependent on material being discharged and other factors, including bulk density, particle size, hardness and discharge rate. Sealed flange bearings are available as an option, these bearings typically have a zerk style grease fitting and should be lubricated every 6 months. 2. The rear of the metering screw is supported by the bearings in the gearbox assembly and lubricated via the gearbox oil (see #4 below).
Fig D. Disassembly Warning: Motor must be electrically Locked-out before any work is performed. The MT-X-XXX Series Feeder is easily disassembled for cleaning, changing of screws, or maintenance purposes. To remove the discharge tube: 1. Remove the four (4) nuts and pull the discharge tube forward until it disengages the screw.
1. Remove plastic end cap on gearbox shaft center, under the cap is a 7/16 bolt which retains the screw to the gearbox, remove this bolt and the screw will easily slide forward and out of the trough section. 2. Loosen the bronze pusher and remove it from the packing box to remove and replace the packing rope with three rings of Teflon braid. The hopper may be removed by undoing the bolts and lifting vertically off the trough assembly.
MT-X-XXXX FEEDER SPARE PARTS LIST Fig F. ITEM 1. 2. 3. 4.
5. LEVEL SENSOR (OPTIONAL) LS-2000 6. FEED SCREW * MT-X-SCREW 7. FEED TUBE* MT-X-TUBE 8. MOTOR* SPECIFY TYPE 9. GEARBOX* KAZ37AM6 *ITEMS MARKED WITH ASTERISK ARE PROVIDED FOR REFERENCE ONLY. THESE ITEMS WILL REQUIRE REFERENCE TO SERIAL NUMBER, MODEL, SIZE, RATIO, INPUT POWER AS REQUIRED. Metalfab Service Metalfab, Inc. Prices Switch Road P.O. Box 9 Vernon, NJ 07462 Phone (973) 764-2000 * Fax (973) 764-0272 Email: metalfab@metalfabinc.
