Eclipse 4000 Maintenance Manual
01/12/02 V2.00 Page 10
MAINTENANCE:
NOTE: When the conveyors are stopped the reject devise is disabled. Therefore prior to
undertaking any maintenance or cleaning work, the conveyors MUST be stopped.
Regular cleaning down is the key to maintaining good system operation and optimum accuracy.
Therefore minimum cleaning and removal of product spillage should be carried out on a daily basis.
On a weekly basis a more thorough clean down and inspection of belts, rollers and bearings should be
carried out. Any parts showing signs of ware should be replaced.
Conveyors:
Tension and tracking of the Checkweigher conveyor belts should be checked on a regular basis to
prevent unnecessary ware or damage of components.
Belt tension: On the Checkweigher conveyors it should be possible to grip the idle roller of the
standard PU belt or multiple tape (short) conveyors without stalling the motor. If the belt is over
tensioned then tracking it will become very difficult.
Belt tracking: When tracking any conveyor belt always remember that the belt will try to run towards
the high point and it only needs a small amount of movement of the tracking roller to cause either a
change in the direction or an increase in the speed of movement of the belt in the same direction.
Therefore always make a very small adjustment and wait a minute to note any change in belt position.
Also adjustment must be a mix of increase tension to one side and release of tension to the other. In
that way the average belt tension is maintained and not increased. Over tension will result in a greater
difficulty to track the belt.
Belt replacement: This can be easily and quickly achieved by stopping the system, unplugging the
motor cable and removing the two thumb screws in the side members. The conveyor can then be
rotated up and slid back out of the cradle. Belt tension is released by rotating the idle roller up. Then
simply slide off the current belt or tapes and replace with the new ones. Rotate the idle roller back
down to restore tension, refit into the conveyor into the cradle, replace the thumbscrews and reconnect
the motor cable.
Bearings: The latest Checkweigher conveyors now use self-aligning greaseable bearings for the drive
roller. Vegetable grease is used for these bearings. To top up the grease requires a small nipple, which
is screwed into the bearing housing and grease, inserted via a grease gun.
Bearings are located in special housings with oil seals either side. The bearing is locked into the
housing, as is the roller shaft into the bearing, with bearing lock. The grease is then applied (one stroke
or pump only) while the roller is spun to draw the grease into the bearing. If the amount is exceeded it
will result in displacement of the oil seal. It is not recommended that untrained personnel replace
bearings.
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