Maintenance
Operating Instructions 867-M PREMIUM - 00.0 - 02/2015 39
6 Maintenance
This chapter describes simple maintenance work that needs to be 
carried out on a regular basis. The maintenance work can be 
carried out by the operating personnel. Advanced maintenance 
work may only be carried out by qualified specialists. Advanced 
maintenance work is described in the  Service instructions.
6.1 Cleaning work
Cleaning the machine
Lint and thread remnants should be removed after every 8 hours 
of operation using a compressed air gun or a brush. When 
sewing very fluffy material, the machine should be cleaned more 
frequently.
WARNING
Risk of injury from flying particles!
Switch off the machine at the main switch before 
cleaning the machine.
Flying particles can enter the eyes, causing 
injury.
Hold the compressed air gun so that the particles 
do not fly close to people.
Make sure no particles fly into the oil sump.
NOTICE
Malfunctions can occur due to a dirty machine.
Lint and thread remnants can impair the operation of the 
machine.
Clean the machine at regular intervals as described in the 
instructions.