Beechcraft C-12C Operator And Technical Reference Manual page 148

TM 1-1510-218-10
During freezing temperature, toilet shall be
serviced with antifreeze solution to prevent
damage.
Charge the tank with a mixture of 2 quarts of
water and 3 ounces of Monogram DG-19 chemical.
To assure toilet
operation during freezing weather, an
ethylene glycol base anti-freeze containing
antifoam agent may be added to the flush
fluid.
d. Tank Installation.
1. Reinstall the tank by inserting the slides,
located on each side of the knife valve,
into the slide plate assembly on the
bottom of the toilet and slide tank into
place.
2. Press the two fasteners to the first detent
to secure the tank.
3. Remove the cap in the flush hose quick
disconnect and connect the hose coupling
to the quick disconnect.
disconnect lock ring.
4. Pull the knife valve actuator to fully open
the valve.
5. Lift the toilet seat and shroud assembly
from the top of the toilet and wipe with
cloth moistened with clear water and
disinfectant.
surrounding area.
6. Check flushing operation of the toilet and
check for leaks.
7. Close access to the toilet.
2-110. SERVICING THE CHEMICAL TOILET
AIRCRAFT SERIAL 86-60084-86-0089.
The toilet is of the standard dry chemical type.
The toilet should be removed and emptied after each
flight, if used. An approved dry chemical, such as
Commode Magic, may be used in accordance with the
manufacturer's instructions. A stiff (nonmetallic) bristle
brush and a water and detergent solution should be
used to clean the bowl. Install a clean waste bag in
the bowl before adding chemical.
2-132
CAUTION
NOTE
recirculation system
Lock the
Wipe the bowl
2-111. ANTI-ICING, DEICING AND DEFROSTING
PROTECTION.
The aircraft is protected in subfreezing weather
by spraying the surfaces (to be covered with protective
covers) with defrosting fluid. Spraying defrosting fluid
on aircraft surfaces before installing protective covers
will permit protective covers to be removed with a
minimum of sticking.
snow from blowing under protective covers and
diluting the fluid, ensure that protective covers are
fitted tightly. As a deicing measure, keep exposed
aircraft surface wet with fluid for protection against
frost.
Do not apply anti-icing, deicing and
defrosting
surfaces if snow is expected.
snow will dilute the defrosting fluid and
form a slush mixture, which will freeze in
place and become difficult to remove.
2-112. ANTI-ICING, DEICING, AND DEFROSTING
TREATMENT.
Use undiluted anti-icing, deicing and defrosting
fluid (MIL-A-8243 or MIL-F-5566) to treat aircraft
surfaces for protection against freezing rain and frost.
Spray aircraft surface sufficiently to wet area, but
without excessive drainage.
recommended to prevent waste. Use diluted, hot fluid
to remove ice accumulations.
1. Remove frost or ice accumulations from
aircraft surfaces by spraying with diluted
anti-icing, deicing, and defrosting fluid
mixed in accordance with Table 2-16.
and
2. Spray diluted, hot fluid in a solid stream
(not
Thoroughly saturate aircraft surface and
remove loose ice.
quantity of diluted, hot fluid on aircraft
surface coated with ice to prevent liquid
layer from freezing.
should be sprayed at a high pressure, but
T
not exceeding 300 psi.
3. When
available and it is deemed necessary to
remove ice accumulations from aircraft
surfaces, undiluted defrosting fluid may be
used. Spray undiluted defrosting fluid at
15-minute intervals to assure complete
coverage. Removal of ice accumulations
using
expensive and slow.
To prevent freezing rain and
NOTE
fluid to exposed
A fine spray is
over 15 gallons per
Keep a sufficient
Diluted, hot fluid
facilities for heating
undiluted defrosting
aircraft
Melting
minute).
are not
fluid is