AIRPLANE
OPERATIONS
MANUAL
GROUND SERVICING
SEPTEMBER 20, 1999
1-12-50
Page
3
Code
01
Servicing the toilet waste tank is accomplished as follows:
NOTE: Commercial deodorants and disinfectants can be added to the
waste tank, but the tank definitive volume must not contain
such material.
− Open waste-service-panel door.
− Remove the protective cap from the toilet rinse nipple.
− Release the handle and open the cap of the waste drain valve.
− Connect the lavatory dumping coupling of the lavatory servicing
dolly to the waste drain valve.
− Connect the lavatory filling coupling to the rinse nipple.
− Push the lever of the waste drain-valve actuator to open its internal
flapper valve. Do not operate the coupling handle; its operation is
not necessary.
− Pull and lock the drain control handle to open the holding-tank
drain valve.
− Continue the tank drainage until the waste flow stops.
− Flush with water through the rinse nipple for approximately 3
minutes.
− Release the control cable.
− Fill the waste holding tank with 15 liters (4 gal) of water.
− Pull and lock the drain control handle to open the holding-tank
drain valve.
− Release the drain control handle after all liquid is drained.
− Fill the waste holding tank with a maximum of 7.5 liters (2 gal) of
water and then add:
- 57 grams (2 oz.) of Monogram MC-2000 germicidal deodorant, or;
- 170 grams (6 oz.) of Mirabowl "Q" germicidal deodorant.
− Disconnect the lavatory dumping and filling couplings.
− Close the cap and latch the handle of the waste drain valve. The
flapper valve will close automatically when the cap is closed.
− Install the cap on the toilet rinse nipple.
NOTE: The access door will close only if the waste drain valve is
correctly closed.
− Close waste-service-panel door.
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