
Stratasys J750/J735/J720 User Guide
4 Operating and Maintaining the Printer
DOC-08040 Rev. R
4-32
Frequency
Task
For More
Information
Monthly, and after replacing print
heads
Check the alignment of the print heads.
See "Aligning the
Print Heads" on
page 4-49.
Monthly
Remove and clean the print-head splash shield.
See "Cleaning the
Print-Head Splash
Shield" on page 4-
54.
Monthly
Clean debris from the Z-axis shaft with a vacuum
cleaner.
Monthly
Inspect the exhaust system (duct, fan,
connections).
Monthly
Calibrate the load cells.
See "Calibrating the
Load Cells" on
page 4-81.
Every 250 hours of printing in
High Speed mode (3-materials)
(A reminder message appears.)
Flush the print-block heater.
See "Flushing the
Print-block Heater"
on page 4-82.
Every 1000 hours of printing
Replace the waste-pump tubes.
See "Replacing the
Waste-Pump
Tubes" on page 4-
88.
About once a year (as
necessary)
Replace the Material Filters.
See "Replacing the
Material Filters" on
page 4-93.
Every two years or every 3500
hours of printing
Preventive maintenance visit by service engineer.
Contact your
Stratasys service
provider.
Maintenance Counters
The printer computer application records the dates and frequency for each
maintenance task. You can display the Maintenance Counters screen from the
Options menu.
Figure 4-33 Selecting Maintenance Counters