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MONOGRAM SYSTEMS
COMPONENT MAINTENANCE MANUAL with ILLUSTRATED PARTS LIST
BASIC PN 15900
Page 1
Monogram Proprietary – See title page for details
38-31-09
May
17/02
DESCRIPTION AND OPERATION
TASK 38-31-09-991-801-A01
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.