Metalfab Model DBI Volumetric Screw Feeder - Manual (Page 3)

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.
Any other arrangement could cause damage to the hopper, welds and
the feeder in general.
Maintenance
The DB1 Series Feeders are reasonably maintenance free. Listed below are
maintenance schedules:
1. Front and rear ball bearings are sealed lifetime lubed units. These
bearings are oversized and are run at a very low speed, i.e., 165 RPM or
less. Although they are fitted with grease fittings, it is suggested they not
be lubricated unless in very severe conditions.
2. Rear seal packing is as standard greased cotton waste. If any leakage is
observed, the cotton waste should be replaced along with rear seal
gasket.
3. The standard speed reducer is grease lubricated and should not be
regreased for up to (5) years service. On special units, with oil lubricated
units, they are shipped with oil in them. Follow the attached instructions.
4. The DC motors have lifetime lubed bearings, which gives years of service.
If bearings fail, a competent motor repair shop must replace them.
Brushes should be checked for wear every (6) months of continuous
service.
5. When handling highly abrasive materials, the screw should be checked
periodically for wear.
Disassembly
Warning: Motor must be electrically Locked-out before any work is
performed.
The DB1 Feeder is easily disassembled for cleaning, changing of screws, or
maintenance purposes. To remove the discharge tube:
1. Loosen the set collar on the bearing (Part #2, Dwg. S-1019).