SST4 Washdown Printer
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6.2 General Cleaning
During normal operation, media debris may accumulate around the printer mechanism inside the printer. This debris should be
removed regularly using a soft bristle brush and/or vacuum cleaner.
6.3 Cleaning the Printhead
Foreign particles can collect on the printhead, causing characters or bar codes to appear light or faded. This type of problem is
evidenced by a continuous light streak which appears in the same physical position on each printed line. This condition should
only appear after extensive printer operation or if poor quality paper has been used. It is recommended that Rice Lake
Weighing Systems-supplied labels are used to obtain continuous high quality printing.
Recommended printhead cleaning intervals:
• Due to abrasion and foreign particle deposits, direct thermal printheads should be cleaned every 50,000 linear inches
(approximately eight rolls of labels) (12700m).
• Thermal transfer printheads should be cleaned at least every 250,000 linear inches (approximately 40 rolls of labels).
Printhead cleaning procedure:
1. Unplug printer from the power outlet.
2. Open cover. Unlock and open printhead.
3. Gently wipe underside of printhead burn-line area using a cotton swab moistened (not soaked) with isopropyl alcohol.
4. Allow to dry.
5. Lock and close the printhead.
6. Close cover.
7. Plug in and turn on printer.
