Section II. REMOVE AND REPLACE DEFECTIVE COMPONENTS
REMOVAL AND REPLACEMENT PROCEDURES
Once you have isolated a defective component, you must remove and replace
the component. Refer to figure 2-3 for an exploded view of components. Follow the
procedures in the following paragraphs.
a. Remove and Replace the External Fuse. The external fuse is located in the
back of the centrifuge. If you find that the external fuse is defective, replace it with a
fuse of the following rating: Model 0103 -Type 3AG, 4 amp, 250 volt fuse, and
Model 0106 -Type 3AG, 2.5 amp, 250 volt fuse. Always determine what caused the
fuse to blow.
Press the spring-load fuse holder to release the fuse.
(2) Install a new fuse in the holder and push the holder into the fuse
receptacle until it locks into position.
b. Remove and Replace the Motor Brushes.
Remove the line cord from the power outlet.
Remove the rotor assembly and close and latch the centrifuge cover.
Rest the centrifuge on the edge of the front console and cover.
(4) Remove the four screws and rubber feet which secure the bottom cover
to the centrifuge base. Unloosen the cover clamp screw until the clamp is loose.
Remove the bottom cover and drip pan plate.
Locate the brush cap on the left side of the motor housing.
(6) Unscrew the brush cap and remove the spring and brush assembly
carefully noting the orientation of the curved brush surface.
Inspect the brush and replace if worn to a length of 6.3 mm (1/4 inch) or
If the brush is not worn, replace it exactly as you found it.
(8) To install a new brush, insert the spring and brush assembly into the
receptacle. Be sure the curved surface the brush is oriented to match the curved
surface of the motor housing before insertion.