(4) Apply 115-volt ac, 60-cps power to the
unit.
Remove rust and corrosion from metal sur-
b. Replacement of Fuses, (TA-248A/TT)
facez by lightly sanding them with fine sand-
paper. Brush two thin coats of paint on the
cartridge fuses in the TA-248A/TT, proceed as
bare metal to protect it from further corrosion.
follows :
Refer to the applicable cleaning and refinish-
(1) Remove the 115-volt ac, 60-Cps power
ing practices specified in TB SIG 364. Refer to
from the unit.
(2) Depress the fuseholder cap toward the
eral Stock numbers.
fuseholder and turn the cap one-
fourth turn counterclockwise.
(3) Pull the fuseholder cap away from
a.. Replacement of Fues (TA-248/TT). T o
the fuseholder.
replace the cartridge-type fuses mounted in the
(4) Remove the cartridge-type fuse from
fuseholder on the mounting plate, proceed as
the fuseholder cap and replace the
follows :
fuse with a new 3-ampere, 250-volt
(1) Remove the 115-volt ac, 60-cps power
fuse.
from the unit.
(5) Replace the fuseholder cap on the
(2) Reach behind the mounting plate and
fuseholder. Depress and turn the cap
remove the fuse from its mounting in
one-fourth turn in a clockwise direc-
the block-type fuseholder.
tion.
(6) Apply 115-volt, 60-cps power to the
(3) Replace the fuse with one of the cor-
unit.
rect rating (5-ampere, 250-volt).
