User manual

Service 23
3. Remove the head covers using a flathead screwdriver to loosen the four quarter-turn screws.
4. Release the air filter from the lower cover by hooking a fingertip under the edge of its clip and pulling up.
5. Clean the air filter with a vacuum or compressed air. If the filter is contaminated with smoke residue or
other oily substances, soak and squeeze clean in a warm water/detergent solution, then blot dry. If the
filter is not in perfect condition, replace with a new item, available from your Martin dealer.
6. Clean the twin fans in the head (see Figure 13) and the air vents in the head covers with a soft brush or
cotton swab and vacuum.
7. Refit the air filter in the lower head cover by placing the filter in position, then hooking the tab on the filter
clip under the last louver in the air vent and pressing the clip down onto the filter with a fingertip on (A)
until secure (see Figure 14).
8. Carefully clean the optical components.
9. Dry with a clean, soft, lint-free cloth or compressed air.
10. Refit the head covers.
Important! The head cover with the air filter must be fitted over the head fans so that filtered air is
sucked into the fixture.
11. Remove the two 4mm Allen screws from the carrying handles on the sides of the base unit and remove
the louvered side covers. Clean the cover louvers and base fan with a cotton swab or soft brush and
vacuum.
12. Refit the base unit covers before reapplying power.
Lubrication
The MAC 250 Wash requires no lubrication under normal circumstances. Moving parts are treated with a
long-lasting Teflon-based lubricant that can be reapplied by a Martin service partner in the unlikely event
that this should be necessary.
Figure 13: Head fans
A
Figure 14: Refitting the air filter