Monogram Systems
COMPONENT MAINTENANCE MANUAL
BASIC PN 15900
38-31-09
Page 1
May 17/02
DESCRIPTION AND OPERATION
1. General
A. The flushing toilet assembly covered in this manual is a separable assembly of the
toilet installation and is capable of receiving, temporarily storing and during ground
servicing, disposing of waste. Refer to Table 1, Leading Particulars for general
specifications of the toilet assembly.
2. Description
A. The toilet assembly (ref. Figure 1) basically consists of the toilet bowl (1), timer (2),
tank and top assembly (3), motor-pump-filter unit (4), drain valve assembly (5),
solenoid valve assembly (6), liquid level transmitter (7), tie down bracket (8) and hold
down rod (9).
B. The toilet bowl assembly, made of polished stainless steel, is mounted on top of the
tank and top assembly. The timer assembly, a solid-state electronic device used to
control sequence and timing of flushing operation, is also located on the top of the
tank. The tank and top assembly, a Kevlar tank with molded-in structure
reinforcement and top is the reservoir for flushing fluid and waste. The motor-pump-
filter assembly (MPFA) consists of a DC Motor Assembly, static TEF coated
perforated filter, pump impeller and rotating spray nozzle housing. The MPFA is
mounted on the tank with filter submerged in the flushing fluid. The springloaded,
cable actuated drain valve assembly seals the toilet to prevent leakage of stored fluid
and waste and to permit draining and cleaning of the toilet during ground servicing.
The solenoid valve assembly controls the admission of cleansing and charging fluid.
The liquid level transmitter is a solid state electronic device capable of sensing two
discrete points of fill on the toilet tank and transmitting an electronic signal for
precharge level or full-tank level. The level sensors are located on an inside wall of
the tank and the transmitter is mounted on the top of the tank.
