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S2-9 XXX Se ri es Dispensing Sys te m IOM Man ual Maintenance © 2023 Nordson C orporatio n 6-25 9. Remov e the gau ge fr om under the encoder. 10. M anually move the di spe n si ng head up and dow n and mak e sure tha t …
S2-9XXX Series Dispensing System IOM Manual Maintenance
6-24 © 2023 Nordson Corporation
6.12.3 Adjusting the Z-Axis Linear Encoder Gap
To adjust the Z-axis linear encoder gap (Figure 6-17):
1. If necessary, power on the dispensing system, see 4.3 Powering on the Dispensing System.
2. Exit Fluidmove.
3. Open the dispensing area door.
4. Place the 0.8 mm gauge in the space between the linear encoder head and the linear encoder
strip.
5. To adjust the Z-axis linear encoder gap, use the 3 mm hex key to loosen the two mounting
screws on the encoder bracket.
Item
Description
1 Linear Encoder
2
Encoder Mounting Screws (2)
Figure 6-17 Adjusting the Linear Encoder Height
6. Apply Loctite thread locker to the hex bolt threads.
7. Press the encoder against the gauge. Make sure that the encoder is level and not pinching
the gauge.
You should be able to slide the gauge up and down beneath the encoder. If the gauge
slides too easily, the gap may be too wide.
8. Use the 3 mm hex key to secure the encoder in place.
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S2-9XXX Series Dispensing System IOM Manual Maintenance
© 2023 Nordson Corporation 6-25
9. Remove the gauge from under the encoder.
10. Manually move the dispensing head up and down and make sure that the encoder LED
remains green when in motion.
If the LED turns red or orange when the axis is in motion, repeat Step 4 through Step 11
and adjust the encoder height again.
If you notice that the LED turns red or orange in a specific location, it may be due to an
obstruction or a damaged encoder strip. Try using a soft cloth and mild cleanser to clean
that location. If the problem is not resolved, repeat Step 4 through Step 11 and adjust
the encoder height again.
11. When the LED stays green throughout the entire dispensing head travel, close the
dispensing area door and restart Fluidmove.
12. Observe the dispensing head motion to ensure the dispensing head initializes properly and
finds home correctly.
S2-9XXX Series Dispensing System IOM Manual Maintenance
6-26 © 2023 Nordson Corporation
6.13 Tensioning the Conveyor Belts
To tension the conveyor belts (Figure 6-18):
1. Perform a service shutdown, see 2.14 Service Shutdown.
2. If applicable, lift the heater tooling assembly out the dispense station to provide access to
the conveyor belt adjustment pulley.
There is a belt adjustment pulley for each belt.
WARNING! Make sure the heater tooling is cool before removal.
3. Loosen, do not remove, the belt tensioner screw located on the belt adjustment pulley.
Hold the bolt on the back of the belt adjustment pulley while loosening the screw so
that it will not turn with the screw.
4. Move belt tension pulley right and left until the desired tension is obtained.
5. Tighten the belt tensioner screw.
6. Torque the belt tensioner screw to 9.8 Nm (87 in-lbs).
7. Repeat Step 3 through Step 6 for the other conveyor belt.
8. If the dispensing system is equipped with dual conveyors, perform Step 3 through Step 6 for
the other conveyor.
Item Description
1
Conveyor Belt
2 Belt Adjustment Pulley
3
Belt Tensioner Screw
Figure 6-18 Tensioning the Conveyor Belts
NOTE If the conveyor belts need to be replaced, see 8.12 Replacing the Conveyer Belts.
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