![13. Vacuum pump is running too](/images/new-backgrounds/33319/3331923x1.webp)
TROUBLESHOOTING GUIDE
Problem |
| Possible Cause |
| Service Instructions |
13. Vacuum pump is running too | a. Gear motor is worn or defective. | a. Check motor and replace if | ||
slow, overheating, blowing | b. Plugged vent line or vent filter. |
| necessary. | |
fuses or circuit breaker. | b. Disassemble and clean out vent | |||
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| line. Replace vent filter if |
| c. | Blockage in discharge line. |
| necessary. |
| c. | Disassemble and clean discharge | ||
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| line. Be certain that |
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| (duckbill valves) and seacock are |
| d. Improper wire size. |
| in proper position. | |
| d. Wire size too small. Check electri- | |||
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| cal diagram for proper wire size for |
| e. Improper voltage. |
| voltage of pump used. | |
| e. Check input power for low voltage. | |||
| f. | Vacuum pump bellows clogged with | f. | Remove and clean bellows |
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| tissue. |
| assembly. (When flushing toilet, |
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| using more water may alleviate |
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| this problem.) |
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14. Toilet will not flush. | a. There is a blockage in the system. | a. Open flush ball and check the | ||
(No vacuum.) |
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See problems 3 and 15 |
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| bottom of the base for block- |
if necessary. |
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| age and dislodge it. Never use |
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| plumbing chemicals. |
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| If blockage is not in base, it may |
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| be found in these locations: |
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| • outlet of vacuum tank |
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| • inlet of vacuum generator |
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| • diptube of vacuum generator |
| b. Pump will not run. |
| • inlet of vacuum pump | |
| b. See problem 12. | |||
| c. Duckbill valves in vacuum pump | c. Replace duckbill valves, making | ||
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| are inverted due to blocked dis- |
| sure they point in the correct |
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| charge line or an attempt to pump |
| direction. |
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| out against closed seacock. |
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15. Blockage between toilet and | a. Collapsed vacuum line. | a. Inspect vacuum line for collapsed | ||
vacuum generator. |
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| condition and replace line if |
| b. Sharp bends or kinks in vacuum |
| needed. | |
| b. Inspect vacuum hose for kinks | |||
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| hose. |
| or bends. If less than |
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| (216mm) radius on any bend, |
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| reposition hose to achieve |
| c. | Improper operation of toilet. |
| minimum |
| c. | Make sure each person using | ||
| d. Foreign objects were flushed down |
| toilet knows correct procedure. | |
| d. DO NOT flush any | |||
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| toilet. |
| items (i.e. sanitary napkins, facial |
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| tissue, wet strength tissue, paper |
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| towels, etc.) or excessive toilet |
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| tissue down toilet. Rapid- |
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| dissolving SeaLand brand toilet |
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| tissue is best. |
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16. Pump emits odor. | a. Loose or defective hose | a. Tighten connections or replace | ||
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| connection on pump. |
| hose and make new connections. |
| b. Loose intake or discharge fittings | b. Tighten intake or discharge fittings | ||
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| on pump. |
| on pump. Replace nipples or |
| c. Worn, torn or punctured pump |
| adapters if necessary. | |
| c. Replace pump bellows or | |||
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| bellows (vacuum generator) or |
| diaphragm. |
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| diaphragm (vacuum holding tank). |
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