MasterFlush Operation
Freshwater Flush (7120, 7220)
Toilet system start-up
1. Turn on fresh water supply to toilet.
2. Press "Flush" switch (1) and hold until water enters the
toilet bowl.
3. Toss several sheets of toilet paper into bowl and repeat
cycle. The bowl should completely clear.
Normal flushing
Press "Flush" switch (1) down and hold until waste drains from
toilet bowl (about 10 – 20 seconds). This switch activates a
macerator pump that siphons water and waste from the bowl,
macerates, and propels the effluent to the discharge line/
holding tank.
To use less water for liquid-only flushes, press "Flush" switch for shorter period
of time.
Sea Water Flush (7160, 7260)
Toilet system start-up
1. Open sea water inlet and toilet discharge outlet seacocks.
2. Press "Flush" switch (2) and hold until water enters the
toilet bowl.
3. Toss several sheets of toilet paper into bowl and repeat
cycle. The bowl should completely clear.
Normal flushing
Press "Flush" switch (2) down and hold until waste drains from
toilet bowl (about 10 – 20 seconds). This switch activates a
macerator pump that siphons water and waste from the bowl,
macerates, and propels the effluent to the discharge line.
To use less water for liquid-only flushes, press "Flush" switch for shorter period of
time.
If toilet bowl does not completely flush and fills up with sea water during flush,
partially close inlet valve until bowl clears and completely discharges effluent. Then,
with inlet and discharge valves completely open, flush toilet for a few seconds to
clear toilet and discharge system.
Caution! Hazard of Flooding
If toilet is connected to ANY through-the-hull fittings, ALWAYS close sea-
cocks when toilet is not in use (even if boat is unattended for a brief period).
All passengers MUST be instructed on how to close valves when the toilet
is not in use. Failure to do so can result in flooding which can cause loss of
property and life.
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