Too much lubrication will result in an increased fire hazard because of the increased buildup of
dust. Not enough lubrication will hasten chain and sprocket wear. Chain and sprocket wear
should be closely monitored to assure repairs are made before the equipment breaks down.
220.127.116.11 Drive Machine. The drive mechanism is powered by a gearhead type motor equipped
with an integral magnetic brake with a spring return for manual release.
18.104.22.168.1 Inspection Made with Power On. Close the mainline switch and proceed as follows:
a. Have-the conveyor operated making frequent stops. Observe if there is any excessive play
or backlash in the bearings or gearing. unusual noise or play is usually an indication of gear or
thrust trouble, or damage to bearing liners, rollers, or balls. Bearing problems are also detected
by sound and/or heat.
freely. The level of oil in the reservoirs should be checked and any leakage of oil noted.
c. Inspect all motor fastening bolts to determine whether they are in place and tight.
d. Observe the operation of the brake. The brake should not chatter. Check to see that the
brake is automatically applied on normal stops.
e. The clearance between the brake shoe and the brake drum when running should not be
greater than necessary to permit free running. Examine the brake pins to determine whether they
are properly lubricated and not frozen, and that the cotter pins are in place and open. Note any
harsh and abrupt brake action.
22.214.171.124.2 Inspection Made with Power Off. Open the mainline switch and proceed as follows:
a. Examine the brake and drum to determine that the brake linings are free of oil and whether
there is any scoring of the drum.
b. The brake coil leads, connections, and windings should be examined to check insulation
conditions and physical connections.
c. Examine the oil in the gear case to determine whether it is free of metallic particles or other
foreign substances. Check the oil level. Visually check the gear for excessive, wear.