Care And Maintenance; Cleaning - Pfaff 521 Instruction Manual

12

Care and maintenance

Clean .............................................................. daily, more often if in continuous operation
Oil level (hook oil reservoir) ...................................................................... daily before use
Lubricate the bevel gears ..................................................................................... annually
12

Cleaning

.01
Clean the hook and hook compartment daily, more often if in continuous operation.
3
Fig. 12 - 01
These maintenance intervals are calculated for the average running time of a
single shift operation. If the machine is operated more than this, shorter
intervals are recommended.
2
1
4
Care and maintenance
Switch the machine off!
Danger of injury if the machine
is started accidentally!
Bring the needle bar to its highest
position.
Open the bed plate slide and remove the
bobbin case cap and the bobbin.
Unscrew hook gib 1.
Turn the handwheel until the point of
bobbin case 2 penetrates into the groove
of the hook race approx. 5 mm.
Remove bobbin case 2.
Clean the hook race with paraffin.
When inserting the bobbin case 2,
ensure that the horn 3 of the bobbin
case 2 meshes in the recess of the
retaining lug 4.
Screw hook gib 1 back on.
Insert the bobbin and bobbin case and
close the bed plate slide.
12 - 1