SeaLand 548+ VacuFlush Toilets - Manual (Page 12)

12
VacuFlush Pedal-Flush Toilet Maintenance/Winterizing/Service
Problem Possible Cause Service Instruction
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 .
13 . Vacuum pump is running too
slow, overheating, blowing fuses
or circuit breaker .
a . Gear motor is worn, 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; replace if needed .
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 .
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 problem 15
if necessary .
a . Blockage exists in 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, check 1-inch
(25 mm) orifice at bottom of
base for blockage and dislodge
it . If blockage is not in base, it
may be found in:
• 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 .