SeaLand VHT 4500 Holding Tank - 140 Series VacuFlush Toilet - Manual (Page 11)

11
Maintenance Procedure service interval additional information
RouTInE
Check all clamped hose joints below
water line for leaks.
Monthly –
Check filter screen in water valve.
After first year of service,
then as needed if water flow
is noticeably slower.
Screen is located inside water
valve inlet.
Replace vent filter (if installed in holding
tank vent line).
Annually –
MajoR sysTEM MaInTEnancE
Replace flush ball seal and flush ball
(if required).
Every three years
See toilet parts list for
replacement kit part number.
EXTEnDED PERioDs oF non-usE – clEaRinG DischaRGE linEs
Sanitation hoses should be cleared if toilet will not be needed for an extended period of time (more
than two weeks).
1. Fill toilet bowl with water and add 4 oz. (120 ml) of biodegradable laundry detergent (should
NOT contain bleach).
2. Flush toilet, holding pedal down for about two minutes. Close flush ball.
3. Turn off water supply to toilet.
4. Flush the toilet without water, allowing the vacuum pump to shut off after the flush. Repeat
three times. (This procedure will minimize any remaining water in the sanitation hoses.)
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 below.
WinTERiZinG
At the end of each season, the SeaLand toilet should be winterized for storage by using potable
water-safe antifreeze in the system.
To use antifreeze:
1. Drain potable water tank.
2. Add freshwater antifreeze to potable water tank.
3. Flush potable 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.
4. Empty holding tank.
noTE: Use nontoxic antifreeze designated for potable water systems. (See vehicle owner’s manual.)
cauTion: Never use automotive-type antifreeze in freshwater systems.
MainTaininG ThE sYsTEM
This chart is a general guide for keeping your sanitation system 100% ready for use at any time.