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b. Water line connection is loose or not seated properly. c. Defective water valve. d. Stripped threads. a. Replace water valve. b. Insure that threads are not cross- threaded and tighten. c. Replace water valve. d. Replace water valve. 8. Water leaking from rear of toilet bowl. a. Worn or defective vacuum breaker. b. Loose vacuum breaker. c. Cracked or defective toilet bowl. a. Remove white cap from vacuum breaker. Flush toilet. If water leaks during flush, vacuum breaker needs to be replaced. b. Secure vacuum breaker connection. c. Replace toilet bowl. 9. Water is leaking from the base/toilet connection. a. Clamp ring may be loose. b. Ball seals may be worn or defective. a. Remove plastic base cover (on applicable models) and tighten the clamp ring. b. Replace ball seals. 10.Vacuum pump running too often between flushes. (See Vacuum Tester Information on page 9.) a. Water leaks out of bowl between flush ball and ball seal. b. Vacuum line leak. a. Leave small amount of water in bowl. If water is sucked from bowl, see problems 1 and 2. b. Tighten all connections at toilet, vacuum generator or vacuum holding tank (including hose clamps and threaded spin nuts). If leaks persists, contact SeaLand Product Customer Service. 11.Vacuum pump will not shut off. a. A vacuum leak exists. b. Insufficient vacuum (pump creates less than 10 inches Hg). c. Faulty vacuum switch (pump creates more than 10 inches Hg). d. Improper wiring. e. Bellows not pumping. a. See problem 9b. b. Isolate pump and use vacuum gauge to check vacuum levels. Could be a plugged discharge line or worn duckbill valves. c. Replace vacuum switch. d. Refer to wiring diagram to check for proper wiring. e. Tighten set screw in eccentric to motor shaft. Otherwise, check for damage to bellows and motor shaft. Replace if necessary. 12.Vacuum pump will not run. a. No electrical power. b. Loose or broken electrical wiring. c. Improper electrical connections. d. Faulty vacuum switch. e. Faulty motor. f. Shut-down relay prevents pumping. a. Check input power, circuit breaker and fuse. b. Tighten or reconnect wires at vacuum pump and tank, vacuum generator, or vacuum holding tank. c. Make certain wires at vacuum switch are connected to the “B” terminals. d. To check vacuum switch, short across “B” terminals with jumper wire. e. Replace motor. f. Empty the holding tank. 11 TROUBLESHOOTING GUIDE Problem Possible Cause Service Instructions 13.Vacuum pump is running too slow, overheating, blowing fuses or circuit breaker. a. Gear motor is worn or defective. b. Plugged vent line or vent filter. c. Blockage in discharge line. d. Improper wire size. e. Improper voltage. f. Vacuum pump bellows clogged with tissue. a. Check motor and replace if necessary. b. Disassemble and clean out vent line. Replace vent filter if necessary. c. Disassemble and clean discharge line. Be certain that in-line valves (duckbill valves) and seacock are in proper position. d. Wire size too small. Check electrical diagram for proper wire size for voltage of pump used. e. Check input power for low voltage. f. Remove and clean bellows assembly. (When flushing toilet, using more water may alleviate this problem.) 14.Toilet will not flush. (No vacuum.) See problems 3 and 15 if necessary. a. There is a blockage in the system. b. Pump will not run. c. Duckbill valves in vacuum pump are inverted due to blocked discharge line or an attempt to pump out against closed seacock. a. Open flush ball and check the 1inch (25mm) orifice at the bottom of the base for blockage and dislodge it. Never use drain- opening or other household plumbing chemicals. If blockage is not in base, it may be found in these locations: • outlet of vacuum tank • inlet of vacuum generator • diptube of vacuum generator • inlet of vacuum pump b. See problem 12. c. Replace duckbill valves, making sure they point in the correct direction. 15.Blockage between toilet and vacuum generator. a. Collapsed vacuum line. b. Sharp bends or kinks in vacuum hose. c. Improper operation of toilet. d. Foreign objects were flushed down toilet. a. Inspect vacuum line for collapsed condition and replace line if needed. b. Inspect vacuum hose for kinks or bends. If less than 8.5-inches (216mm) radius on any bend, reposition hose to achieve minimum 8.5-inch bend radius. c. Make sure each person using toilet knows correct procedure. d. DO NOT flush any non-dissolving items (i.e. sanitary napkins, facial tissue, wet strength tissue, paper towels, etc.) or excessive toilet tissue down toilet. Rapid-dissolving SeaLand brand toilet tissue is best. 16.Pump emits odor. a. Loose or defective hose connection on pump. b. Loose intake or discharge fittings on pump. c. Worn, torn or punctured pump bellows (vacuum generator) or diaphragm (vacuum holding tank). a. Tighten connections or replace hose and make new connections. b. Tighten intake or discharge fittings on pump. Replace nipples or adapters if necessary. c. Replace pump bellows or diaphragm. 12 PARTS LIST ...
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