SeaLand 1 2500 Series - Manual (Page 10)

10
TROUBLESHOOTING
1. Vacuum pump will not run.
2. Vacuum pump will not
shut off.
3. Vacuum pump is running too
slow, overheating, blowing
fuses or circuit breaker.
4. Toilet will not flush.
5. Tank will not discharge us-
ing dockside pump (model
2520/2521).
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.
g. Replace motor.
h. Cassette tank not fully engaged in
docking platform.
a. A vacuum leak exists in system.
b. Insufficient vacuum (pump creates less
than 10 inches Hg).
c. Faulty vacuum switch (pump creates
more than 10 inches Hg).
d. Diaphragm not pumping.
e. Blockage in inlet of vacuum pump.
a. Motor is worn or defective.
b. Plugged vent line or vent filter.
c. Improper wire size.
d. Improper voltage.
e. Vacuum pump clogged with tissue.
a. There is a blockage in the toilet.
b. Hose between toilet and cassette tank
is collapsed or kinked.
c. Foreign objects were flushed, causing
blockage in system.
d. Pump will not run.
a. Tank is not adequately vented.
b. Blockage in check valve at tank outlet.
c. Blockage at bottom of discharge
diptube inside the tank.
a. Check input power, circuit breaker
and fuse.
b. Tighten or reconnect wires at docking
platform.
c. Be sure power wires and wires at
vacuum switch are connected to
proper terminals.
d. Replace vacuum switch.
e. Replace motor.
f. Empty the cassette tank. If cassette
is not seated in docking platform
properly, put cassette tank back into
docking platform until locking latch
engages.
g. Charge battery.
h. Engage cassette tank until latch
secures tank to platform.
a. Check for vacuum leaks in system
with vacuum gauge tester.
b. Isolate cassette tank (remove elbow
assembly) and use vacuum gauge to
check vacuum capability. Could be
worn valves.
c. Replace vacuum switch.
d. Tighten set screw in eccentric to mo-
tor shaft. Otherwise, check for dam-
age to diaphragm and motor shaft.
Replace if necessary.
e. Clear blockage from pump inlet.
a. Check motor and replace if
necessary.
b. Disassemble and clean out vent line.
Replace vent filter if
necessary.
c. Wire size too small. Check
“Electrical Installation” section
for proper wire size.
d. Check input power for low voltage.
e. Remove and clean pump
assembly.
a. Open flush ball and check the
1-inch (25mm) orifice at the bottom of
the base for blockage and dislodge it.
Never use drain-opening or other
household plumbing chemicals.
b. Inspect hose and replace if collapsed
or kinked.
c. Clear foreign objects from system.
DO NOT flush any non-dissolving
items (i.e. sanitary napkins, facial
tissue, wet strength tissue, paper
towels, etc.) or excessive tissue.
Before flushing solids, be sure to add
water by lifting the flush lever.
d. See problem 1.
a. Open flush valve in toilet by pressing
on pedal.
b. Disassemble the check valve and
remove blockage.
c. Remove diptube from tank and clear
blockage.
Problem Possible Cause Service Instructions
TROUBLESHOOTING