YSM10_Mainte_E - 第100页

3-33 3 Periodic maintenance items 7 Clean the belt guides and pulley s. 1. Use a vacuum assembly (option) to suction the belt wear debris on the belt guides and sensors, etc. 2. Use a plastic spatula or similar tool to r…

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3-32
3
Periodic maintenance items
4
Loosen the belt.
1. Before loosening the conveyor belt, mark at the current position of the pulley with a permanent
marker.
2. Loosen the pulley mounting screws applying the tension with a hex wrenches (5 and 4) referring to
the figure below.
3. Move the pulley to the direction that the belt is loosened.
Mark the pully position.
Direction that belt is loosened
Loosening the conveyor belt
Hex wrench (4)
Hex wrench (5)
53344-KMG-00
5
Detach the belt from the drive pulley.
Detach the conveyor belt from the pulley and board guide.
6
Check the conveyor belt.
Check the transfer surface of the detached belt for worn-out or scuffing. If the belt worn-out amount or
scuffing is large, replace the conveyor belt referring to chapter 6, "4.1 Replacing the conveyor belt".
3-33
3
Periodic maintenance items
7
Clean the belt guides and pulleys.
1. Use a vacuum assembly (option) to
suction the belt wear debris on the belt
guides and sensors, etc.
2.
Use a plastic spatula or similar tool to
remove the belt wear debris adhering to
the outer peripheral surface of the pulleys.
3.
Use a brush or similar tool to remove the
belt wear debris caught in the belt guides
.
53345-KMG-00
c
CAUTION
Use a plastic spatula and brush to avoid scratching the
pulleys and guides.
c
CAUTION
Do not use absolute ethanol unless the guides and
pulleys are excessively dirty. If using a solvent, be
careful not to spill the solvent on the bearing in the
pulleys during cleaning.
8
Reattach the belt.
1. Reattach the belt temporarily while
putting it on the pulley.
2. Move the pulley to the position marked
in Step 4 and install the mounting bolts.
3.
If looseness of the belt is found, adjust the
pulley position to apply tension.
53346-KMG-00
n
NOTE
The conveyor belt tension standard value of this
machine is 520 to 580 Hz. Adjust the conveyor belt
tension with a tension meter as necessary. The same
standard value applies to the extension conveyor type.
c
CAUTION
The tightening torques of the pulley mounting bolt that
applies tension is 5.5N·m. Do not tighten the bolt
excessively.
9
Attach the board clamp plate.
1. Fit the board clamp plate into its original
position and tighten the board clamp
plate mounting bolts with a hex wrench
(3).
2. Remove the square cloth
placed under
the push-up plate.
53347-KMG-00
Step 7
Cleaning the belt guide and pulley
Spatula
(made of plastic)
Belt wear debris
sticking to pulley
Belt guide
Belt guide
Outer peripheral
surface of pulley
Brush
Outer peripheral surface of pulley
Step 8
Tension measurement point
Tension measurement point
Step 9
Attaching the board clamp plate
Board clamp plate
Board clamp plate mounting bolts
3-34
3
Periodic maintenance items
0
Check the belt rotating condition.
1. Make sure that the board clamp plate
top surface is approx. 0.5mm lower than
the belt upper surface.
2. Close the machine safety cover to
cancel the emeregency stop.
3. Press the [Conveyor In] button on the
[Unit] - [Conveyor] tab screen to turn on
the conveyor motor and check the belt
rotation.
4. If the conveyor belt rotation is uneven or
if the belt deflects, adjust the pulley
position that applies tension again.
54307-KMG-00
c
CAUTION
When the difference between the belt upper surface
and board clamp top surface is very little, the board
transfer error may occur easily. In this case, contact
YAMAHA or YAMAHA sales representatives.
Step 10
Conveyor drive buttons
0.5 mm
Checking conveyor belt rotation
Left Right
Low Left
Check the belt rotating condition
Board clamp plate
Board clamp plate
Conveyor belt
Belt upper surface
Low Right