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SQUEEGEE MODULE REPLACEMENT PROCEDURES Chapter Issue 8, May 19 Technical Reference Manual 9 .13 Front Squeegee Drive Belt T o replace the front squeegee drive belt (left hand stepper mot or), the printhead mechanism must…

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SQUEEGEE MODULE
REPLACEMENT PROCEDURES
9.12 Technical Reference Manual Chapter Issue 8, May 19
support plate.
5. Fit the new belt in position.
6. Using a cable tie wrap or similar, provide a loop around the top of the body
of the motor enabling the motor to be pulled using a force meter. Ensure that
the force meter is pulled in the direction which the drive belt is fitted, figure
above refers.
7. Pull the force meter until a tension of 3-4kgs is monitored on the
meter.Tighten the three screws whilst the motor is under tension.
8. Close the printhead cover.
9. Remove the isolator lock; turn the mains isolator switch ON.
10. Press the System button.
Tension in Direction of
Drive Belt Orientation
Right Stepper Motor
Rear Squeegee Motor Tensioning
Force Meter
Motor Securing Screw
Position (3 positions)
Looped Cable Tie
Drive Belt
SQUEEGEE MODULE
REPLACEMENT PROCEDURES
Chapter Issue 8, May 19 Technical Reference Manual 9.13
Front Squeegee
Drive Belt
To replace the front squeegee drive belt (left hand stepper motor), the printhead
mechanism must be removed from the print carriage.
1. Disconnect the following connectors from the print carriage, left hand side.
• Rear Squeegee Motor
• Front Squeegee Motor
• Home Sensors
• Squeegee Pressure Amplifier
2. Remove the printhead mechanism by unscrewing the four screws securing
the unit to the print carriage.
3. Placing the unit on a secure surface, slacken off the three screws securing
the left hand motor to the support plate.
Figure 9-3 Squeegee Stepper Motor (Green Ident Label Shown)
4. Fit the new belt in position.
5. Using a cable tie wrap or similar, provide a loop around the top of the body
of the motor enabling the motor to be pulled using a force meter. Ensure
that the force meter is pulled in the direction which the drive belt is fitted,
Rear Squeegee Motor Tensioning figure example refers.
6. Pull the force meter until a tension of 3-4kgs is monitored on the meter.
Tighten the three screws whilst the motor is under tension.
7. On completion re-fit the printhead mechanism to the print carriage refit the
drive belt cover plate and re-connect all leads to the print carriage, left hand
side.
8. Refit the squeegees.
9. Close the printhead cover.
10. Remove the isolator lock; turn the mains isolator ON.
11. Press the System button.
Stepper Motor
Securing Screws
Front Squeegee
Motor
SQUEEGEE MODULE
REPLACEMENT PROCEDURES
9.14 Technical Reference Manual Chapter Issue 8, May 19
Alternative Drive
Belt Replacement
This replacement procedure applies to both front and rear belts. It is advised
that drive belts are replaced as a pair.
NOTE
1. If the underside of the stepper motors has a green identification label this
procedure does not apply; refer to figure 9-3.Follow the previous procedures
for belt replacements.
2. The pulley hole centres are fixed. There is no need for pulley belt tension
adjustment.
The squeegee drive belts can be replaced without having to remove the
printhead mechanism from the print carriage.
1. Pull the drive belt from its centre and slip it up over the idler pulley.
2. Slip the belt over the drive pulley and discard it.
3. Repeat Steps 1 and 2 for the other belt.
4. Hold the new belt in position. Align the teeth of the drive pulley with the teeth
of the belt and engage the belt on the pulley.
5. Whilst maintaining light tension on the belt in the drive pulley, to prevent it
from slipping off, rotate the idler pulley to align its teeth with the belts’ teeth.
6. Slip the belt down over the idler pulley; rotate the idler pulley if necessary to
aid fitment and alignment.
NOTE
Even with power removed the drive pulley does not rotate.
7. Repeat Steps 4-6 for the other belt.
8. On completion refit the drive belt cover plate and re-connect all leads to the
print carriage, left hand side.
9. Refit the squeegees.
R Stepper Motorear
Front Stepper Motor
Squeegee Motor Belt Replacement
Rear Drive BeltIdler Pulley
Idler Pulley
Drive Pulley
Drive Pulley
Front Drive Belt