DURKOPP ADLER 670 Operating Instructions Manual page 58

Maintenance
Lint and thread remnants should be removed after every 8 oper-
ating hours using a compressed air gun or a brush. If very fluffy
material is being sewn the machine must be cleaned more
frequently.
A clean machine provides protection from faults during the sewing
process.
Fig. 29: Cleaning
① ②
(1) - Underside of sewing table (2) - Hook
Points that need to be cleaned particularly thoroughly:
• Underside of throat plate
• Area around the hook (2)
• Area around the needle
• Underside of sewing table (1)
Also remove any lint and thread remnants from the oil pan.
56 Operating Instructions 670/680 - 00.0 - 01/2017