TROUBLESHOOTING
| Problem |
| Possible Cause |
| Service Instructions |
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1. | Vacuum pump will not run. | a. | No electrical power. | a. | Check input power, circuit breaker |
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| b. | Loose or broken electrical wiring. | b. | and fuse. |
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| Tighten or reconnect wires at docking | |||
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| c. | Improper electrical connections. | c. | platform. |
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| Be sure power wires and wires at | |||
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| vacuum switch are connected to |
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| d. | Faulty vacuum switch. | d. | proper terminals. |
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| Replace vacuum switch. | |||
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| e. | Faulty motor. | e. | Replace motor. |
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| f. | f. | Empty the cassette tank. If cassette | |
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| is not seated in docking platform |
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| properly, put cassette tank back into |
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| docking platform until locking latch |
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| g. | Replace motor. | g. | engages. |
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| Charge battery. | |||
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| h. | Cassette tank not fully engaged in | h. | Engage cassette tank until latch |
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| docking platform. |
| secures tank to platform. |
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2. Vacuum pump will not | a. | A vacuum leak exists in system. | a. | Check for vacuum leaks in system | |
| shut off. | b. | Insufficient vacuum (pump creates less | b. | with vacuum gauge tester. |
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| Isolate cassette tank (remove elbow | |||
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| than 10 inches Hg). |
| assembly) and use vacuum gauge to |
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| check vacuum capability. Could be |
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| c. | Faulty vacuum switch (pump creates | c. | worn valves. |
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| Replace vacuum switch. | |||
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| more than 10 inches Hg). |
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| d. | Diaphragm not pumping. | d. | Tighten set screw in eccentric to mo- |
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| tor shaft. Otherwise, check for dam- |
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| age to diaphragm and motor shaft. |
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| e. | Blockage in inlet of vacuum pump. | e. | Replace if necessary. |
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| Clear blockage from pump inlet. | |||
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3. Vacuum pump is running too | a. | Motor is worn or defective. | a. | Check motor and replace if | |
| slow, overheating, blowing | b. | Plugged vent line or vent filter. | b. | necessary. |
| fuses or circuit breaker. | Disassemble and clean out vent line. | |||
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| Replace vent filter if |
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| c. | Improper wire size. | c. | necessary. |
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| Wire size too small. Check | |||
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| “Electrical Installation” section |
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| d. | Improper voltage. | d. | for proper wire size. |
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| Check input power for low voltage. | |||
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| e. Vacuum pump clogged with tissue. | e. Remove and clean pump | ||
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| assembly. |
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4. | Toilet will not flush. | a. | There is a blockage in the toilet. | a. | Open flush ball and check the |
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| the base for blockage and dislodge it. |
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| Never use |
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| b. | Hose between toilet and cassette tank | b. | household plumbing chemicals. |
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| Inspect hose and replace if collapsed | |||
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| c. | is collapsed or kinked. | c. | or kinked. |
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| Foreign objects were flushed, causing | Clear foreign objects from system. | ||
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| blockage in system. |
| DO NOT flush any |
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| items (i.e. sanitary napkins, facial |
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| tissue, wet strength tissue, paper |
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| towels, etc.) or excessive tissue. |
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| Before flushing solids, be sure to add |
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| d. | Pump will not run. | d. | water by lifting the flush lever. |
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| See problem 1. | |||
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5. Tank will not discharge us- | a. | Tank is not adequately vented. | a. | Open flush valve in toilet by pressing | |
| ing dockside pump (model | b. | Blockage in check valve at tank outlet. | b. | on pedal. |
| 2520/2521). | Disassemble the check valve and | |||
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| c. | Blockage at bottom of discharge | c. | remove blockage. |
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| Remove diptube from tank and clear | |||
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| diptube inside the tank. |
| blockage. |
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