TROUBLESHOOTING GUIDE (cont’d)
| Problem |
| Possible Cause |
| Service Instructions |
7. Water leaking from rear of | a. Worn or defective vacuum breaker. | a. Remove vacuum breaker cover | |||
| toilet bowl. |
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| and look into top of vacuum |
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| breaker. Flush toilet. If water leaks |
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| during flush, vacuum breaker |
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| needs to be replaced. |
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| b. Loose vacuum breaker. | b. Secure vacuum breaker connection. | ||
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| c. | Cracked or defective toilet bowl. | c. | Replace toilet bowl. |
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8. | Water is leaking from the | a. Clamp ring my be loose. | a. Remove plastic base cover (on | ||
| base/toilet connection. |
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| applicable models) and tighten the |
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| clamp ring. |
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| b. Ball seals may be worn or defective. | b. Replace ball seals. | ||
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9. | Vacuum pump running too | a. Water leaks out of bowl between | a. Leave small amount of water in | ||
| often between flushes. |
| flush ball and ball seal. |
| bowl. If water is sucked from bowl, |
| (See Vacuum Tester |
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| see problems 1 and 2. |
| Information on page 6.) | b. Vacuum line leak. | b. Tighten all connections at toilet, | ||
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| vacuum generator or vacuum |
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| holding tank (including hose |
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| clamps and threaded spin nuts). If |
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| leaks persists, contact SeaLand |
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| Product Customer Service. |
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10.Vacuum pump will not | a. A vacuum leak exists. | a. See problem 8b. | |||
| shut off. | b. Insufficient vacuum (pump creates | b. Isolate pump and use vacuum | ||
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| less than 10 inches Hg). |
| gauge to check vacuum levels. |
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| Could be a plugged discharge line |
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| or worn duckbill valves. |
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| c. Faulty vacuum switch (pump | c. Replace vacuum switch. | ||
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| creates more than 10 inches Hg). | d. See wiring diagram to check for | |
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| d. Improper wiring. | |||
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| proper wiring. |
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| e. Bellows not pumping. | e. Tighten set screw in eccentric to | ||
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| motor shaft. Otherwise, check for |
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| damage to bellows and motor |
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| shaft. Replace if necessary. |
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11. Vacuum pump will not run. | a. No electrical power. | a. Check input power, circuit breaker | |||
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| and fuse. |
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| b. Loose or broken electrical wiring. | b. Tighten or reconnect wires at | ||
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| vacuum pump and tank, vacuum |
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| generator, or vacuum holding tank. |
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| c. | Improper electrical connections. | c. | Be sure wires at vacuum switch |
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| are connected to “B” terminals. |
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| d. Faulty vacuum switch. | d. Check vacuum switch. Short across | ||
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| “B” terminals with jumper wire. |
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| e. Faulty motor. | e. Replace motor. | ||
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| f. | f. | Empty the holding tank. | |
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12.Vacuum pump is running too | a. Gear motor is worn or defective. | a. Check motor and replace if | |||
| slow, overheating, blowing |
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| necessary. |
| fuses or circuit breaker. | b. Plugged vent line or vent filter. | b. Disassemble and clean out vent | ||
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| line. Replace vent filter if |
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| necessary. |
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| c. | Blockage in discharge line. | c. | Disassemble and clean discharge |
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| line. Be certain that |
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| (duckbill valves) and seacock are |
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| in proper position. |
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| d. Improper wire size. | d. Wire size too small. Check | ||
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| electrical diagram for proper wire |
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| size for voltage of pump used. |
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| e. Improper voltage. | e. Check input power for low voltage. | ||
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| f. Vacuum pump bellows clogged | f. | Remove and clean bellows | |
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| with tissue. |
| assembly. (When flushing toilet, |
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| use of more water may alleviate |
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| this problem.) |
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8
