OKI ML521 Manual de usuario descargar pdf (Pagina 163)

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Service Guide ML520/521

Chapter 3 Maintenance & Disassembly

3.5 LUBRICATION

3.5.01 General Information

If the lubrication procedures are not performed properly, the printer will require more frequent cleaning.

Excessive lubricant attracts dust and accumulations build up quickly. An accumulation of paper dust is the

most frequent cause of print quality problems in a dot matrix printer.

3.5.02 Lubrication Schedule

Routine inspection and lubricating should be performed:

1. once a year

2. every 600 hours of operating time.

3.5.03 Lubrication Types

1. Machine Oil or equivalent

2. Moly-lube Grease or equivalent

3.5.04 Lubrication Amounts

Do NOT over-lubricate the printer. Operational problems are caused by excess lubricant. The excess

lubricant causes dust to accumulate. These accumulations can jam gears or cause print problems.

The Lubrication Table will direct you to use the following amounts of lubricant.

1. Medium

Oil: three to four drops

Grease: thin coating (approximately .015 inch)

2. Small

Oil: one drop

Grease: extremely thin coating (approximately .008 inch)

3.5.05 Lubrication Table

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OKI ML521 Manual de usuario Pagina 163