SeaLand 4700 Series VacuFlush Operation Manual - Manual (Page 10)

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SeaLand 4700 Series VacuFlush Toilet Maintenance/winterizing/service
5 . Turn off power to the vacuum pump .
6 . Completely pump out holding tank .
If system will be subjected to freezing temperatures, please follow above procedure, then winterize
system as described in Section 7 .7 .
TURN OFF ELECTRICITY AND WATER TO TOILET IF IDLE FOR LONG PERIODS OF TIME
If people will not be using the boat for a long time (vacation, maintenance, off-season, etc .), or in
the event of a long electrical power interruption, electrical power and water supply to the toilet and
vacuum generator should be shut off .
7.5 Clearing blockage in toilet base
1 . Open the flush ball in Service Mode .
2 . Pull the foreign material from the 1-inch diameter orifice at the bottom of the base or, using a
small diameter blunt rod, attempt to push the blockage through the orifice .
7.6 Locating potential vacuum leaks in base assembly
The VacuFlush toilet is part of a vacuum system that includes a vacuum pump and vacuum tank (or
a vacuum generator) and discharge plumbing lines . If a vacuum leak is suspected, special equip-
ment will isolate the source of the leak . If the toilet is determined to be the source of the leak, there
are three possible areas to investigate:
1 . Flush ball and flush ball seal . See Problem 11 in Troubleshooting Guide .
2 . O-rings on the rotor shaft .
3 . O-rings around bottom of toilet base assembly .
Sources 1 and 2 will require the base assembly to be removed from the toilet and partially
disassembled .
7.7 Winterizing
At the end of each season, the VacuFlush toilet system should be winterized for storage . Follow this
procedure:
1 . Pump out holding tank .
2 . Thoroughly flush system with fresh water .
3 . Drain freshwater tank .
4 . Add freshwater antifreeze to freshwater tank .
5 . Flush freshwater water antifreeze and water mixture through toilet and into the waste holding
tank . Each installation is different, so amounts may vary . User discretion is required to assure
adequate protection .
6 . Empty holding tank .
Note
Use nontoxic antifreeze designated for potable water systems . (See boat or vehicle
owner’s manual .)
Caution
Never use automotive-type antifreeze in freshwater systems .