SeaLand VACUUM HOLDING TANK owner manual Winterizing, Troubleshooting Guide

WINTERIZING

At the end of each boating season, the VacuFlush system must be winterized for storage. The following procedure should be used:

1.Thoroughly flush system with fresh water.

2.Pump out holding tank.

3.Shut off water supply to toilet, remove waterline.

4.Press flush lever until all water is drained from toilet.

5.Turn off electrical power.

To use antifreeze, repeat Steps 1 and 2 above and continue as follows:

CAUTION: The use of freshwater antifreeze that contains alcohol will result in damage to your sanita- tion system. Only use propylene glycol freshwater an- tifreeze that does not contain alcohol.

6.Drain potable water tank.

7.Add freshwater antifreeze to potable water tank.

8.Flush potable water antifreeze and water mixture through toilet and into the vacuum holding tank. Each installation is different so amounts may vary. User discretion is required to assure adequate protection.

9.Pump out vacuum holding tank.

10.Turn off electrical power.

TROUBLESHOOTING GUIDE

Problem	Possible Cause	Service Instructions
1. Pump running too much	a. Flush ball in toilet leaks.	a. Leave small amount of water in toilet. If water is
between flushes.		sucked from bowl, refer to “Troubleshooting
		Guide” in VacuFlush Owner’s Manual.
	b. Vacuum line leak.	b. Tighten all hose connections at pump, vacuum tank,
		holding tank, and toilet.
	c. Foreign material has fouled	c. Disassemble air pump and inspect under the
	air pump valves.	two flat disk valves. If foreign material is
		present, remove debris and reassemble air pump.
	d. Pump diaphragm worn or	d. Inspect diaphragm in pump for small hole or rip.
	damaged.	Replace if necessary.
	e. Duckbill valve in discharge	e. Disassemble discharge outlet and inspect
	fitting stuck open.	duckbill valve. Clean or repair if necessary.
2. Toilet will not flush.	a. Pump will not run.	a. See problem 3.
(No vacuum.)	b. Plugged vacuum line.	b. Blockage usually at base of toilet below flush
		valve. You may have to disconnect line and clear.
	c. Plugged pump valve.	c. Inspect and clean pump valves. Replace if needed.
	d. Vacuum pump discharge or	d. Disassemble lines and clean.
	intake lines plugged.
3. Pump will not run.	a. No power.	a. Check input power, circuit breaker and fuse.
	b. Loose or broken electrical	b. Tighten or reconnect wires at pump and
	wiring.	vacuum tank.
	c. Improper electrical	c. Make certain wires at vacuum switch are
	connections.	connected to the “B” terminals.
	d. Faulty vacuum switch.	d. To check vacuum switch, short across “B” terminals
		with jumper wire.
	e. Faulty motor.	e. Replace motor.
4. Pump will not shut off.	a. Insufficient vacuum.	a. Verify pump pulls minimum 10 inches Hg of vacuum.
	b. Excessive vacuum leak.	b. See problem 1.
	c. Faulty vacuum switch.	c. To check switch, remove one “B” terminal wire.
	d. Improper wiring.	d. Check wiring. Refer to Wiring Diagram.
5. Pump is making a	a. Loose set screw in crank	a. Remove cover from pump and check crank
loud noise.	assembly.	assembly setscrew for tightness.
NOTE: If sound of pump is	b. Pump bearing is worn.	b. Check pump bearing for wear. Replace if needed.
disruptive at night, an “On-Off”	c. Dirt or debris in pump body.	c. Disassemble air pump assembly and inspect
switch may be easily added to the		inside of pump body for foreign objects.
system. The VacuFlush Status	d. Worn or defective motor.
Panel features an integral circuit		d. Replace motor assembly.
breaker which also serves as a	e. Motor loose from mounting	e. Tighten the two (2) nuts securing the motor to
night switch. (#500012, 12 VDC;	bracket.	the mounting bracket.
#500024, 24 VDC)

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