Download 29200 Conversion Kit Troubleshooting Guide

JABSCO 29200 SERIES ELECTRIC CONVERSION KIT TROUBLE
SHOOTING GUIDE
Index
The content of this guide deals with the following issues for your toilet. Please reference the
headings and the corresponding page #’s so that you can find your troubleshooting information
quickly and easily.
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My Toilet isn’t bringing rinse water into the bowl
My Toilet is not retaining water in the bowl
My Toilet is leaking
Waste Water is backing up into my toilet
Fluid/Effluent is not being pumped out
My Toilet is filling with water
Holding Tank is filling with water when not in use
Wiring Instructions
Motor keeps blowing fuses/ Motor doesn’t run
Priming pump for initial use
My Pump is Air locking or Recirculating Waste
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All data and information provided in this guide is for informational purposes only. Xylem Inc. makes no
representations as to accuracy, completeness, or suitability of any information in this guide and will not be liable
for any errors, omissions, or delays in this information or any losses, injuries, or damages arising from its display
or use. All information is provided on an as-is basis. If at any point you feel that you do not completely
understand the information provided, please consult an experienced marine technician.
My toilet isn’t bringing rinse water into
the bowl
Worn Impeller on the inlet side
of the pump. Replace impeller.
Toilet leaking
Pump leaking from top portion
of the pump. The flush pump
cover gasket is located under
the control knob.
Alternate rise & falls on the inlet
hose. Straight and steady run
from seacock to the pump is
necessary.
Low battery voltage or wire size
creating a voltage drop.
Inlet seacock blocked, closed
or partially opened. Clear or
open the seacock to the open
position.
Pump leaking water from the
lower portion of the pump.
Lower gaskets on base need
replacing.
Inlet seacock or hose blocked
or obstructed.
Inlet sea strainer blocked with
debris.
Pump is drawing in air. Air can
enter the inlet side of the
system from seacock through
loose hose fittings. Typically
water will be leaking, although
this may not always be the
cause in many situations.
Toilet is leaking between the
pump assembly and the base
assembly.
1
Fluid/effluent backing up
into the toilet.
Toilet is not retaining water
in the china bowl.
Our marine toilets are not
designed to retain water in
the china bowl. Water will
typically siphon to the lowest
point in the system which in
most cases is the holding
tank.
Clogged or distorted Joker
Valve located on 1-1/2"
discharge flange. Remove
debris or replace the Joker
Valve.
The number one cause of the
discharge backing up into the
toilet is from a blockage or
obstruction in the discharge
hose.
Fluid/effluent is backed up into
the toilet created from back
pressure created while
pumping the toilet. In many
cases fluid/effluent will be
discharged then a short time
later the china bowl will be
filled again. This is created
from a blockage or obstruction
in the discharge hose.
In order to retain water in the
china bowl a vented loop is
required to be installed in
between the discharge flange
coming off the pump and the
holding tank.
Blockage created from effluent
being backed up in the
discharge hose. It’s not
recommended to use a
household plunger or high
pressure water to force out a
blockage. Doing so can
damage internal components
in pump assembly.
Overtime calcium will build-up
on the interior of the discharge
hose, this will cause or create
a blockage. Calcium will buildup overtime reducing the inner
diameter of the discharge
hose. Fluid may pass through
but once solids are added it will
create a blockage. Using
vinegar to dissolve calcium or
replacing the hose is the best
option for resolving this issue.
Closed discharge seacock
fitting or Y-Diverter (Y-Valve)
If at one time your toilet
retained water and now
doesn't, then it’s possible
there is debris clogged in the
joker valve.
Blocked vent on holding tank
will create back pressure which
can prevent the toilet from
discharging as air will not be
able to escape the holding tank
while being filled with fluid or
effluent.
2
Toilet is filling with water.
Water is being siphoned in
through the seacock, through
the pump and into the china
bowl. If the toilet bowl is
mounted below the waterline, a
vented loop must be installed in
between the discharge side of
pump and the back of the china
bowl.
Fluid/effluent is not being
pumped out of toilet.
Blockage in bleed tube,
unblock and remove debris
Holding tank filling with
water.
Water is being siphoned in
through the seacock, through
the macerator pump and into
the holding tank. If the holding
tank is mounted below the
waterline, a vented loop must
be installed in between the
discharge seacock and the
macerator pump.
Worn or damaged impeller on
discharge side of pump.
A vented loop is installed but
water is siphoning into the
holding tank. The duck-billed
valve on the vented loop is
faulty, Replace the valve or
vented loop to correct.
A vented loop is installed but
water is siphoning into the
china bowl. The duck-billed
valve on the vented loop is
faulty, Replace the valve or
vented loop to correct.
Low battery voltage or wire size
is creating a voltage drop.
Blockage or obstruction around
the chopper blade.
In order to determine where the
water is coming from, close off
the inlet seacock. If water stops
filling the china bowl or holding
tank, then water is siphoning
through the inlet seacock. If
water is still coming in, then
water is siphoning through the
discharge seacock.
In order to determine where the
water is coming from, close off
the discharge seacock. If water
stops filling the holding tank or
the china bowl, then water is
siphoning through the
discharge seacock. If water is
still coming in, then water is
siphoning through the inlet
seacock.
3
Wiring instructions/ burnt
wires
Motor keeps blowing fuses.
Motor doesn't run.
Priming pump for initial use.
Incorrect wire size, confirm the
wire size with the
recommended wire size chart
from the product data sheet.
Impeller has swollen or is
obstructed, replace the impeller
or clear the obstruction.
After installation you must
manually prime the flushing
pump before operating.
Motor is bad caused from water
intrusion or simply timed out.
Disconnect the inlet hose from
the flushing pump.
Fuse Size Requirements
12-VDC, Nominal amps. is 24
Amps and requires a 25 Amp
fuse.
24-VDC, Nominal amps. is 13
Amps and requires a 15 Amp
fuse
Shut the inlet seacock,
disconnect the inlet hose from
the flush pump. Disconnect the
outlet hose from the back of the
china bowl or vented loop fitting
& fill with clean water. Hold it
upwards & turn the control
knob to the Flush & Discharge
position for 10 seconds. Air will
escape from the inlet hose tail
& the water will flood the
priming chamber.
Wire Size Table
12-VDC
0'-10' - 12 gauge
10'-25' - 10 gauge
15'-25' - 8 gauge
25'-40' - 6 gauge
40'-60' - 4 gauge
24-VDC
0'-10' - 16 gauge
10'-25' - 14 gauge
15'-25' - 12 gauge
25'-40' - 10 gauge
40'-60' - 10 gauge
Incorrect fuse protection, check
the fuse size requirements.
Fuse Size Requirements
12-VDC, Nominal amps. is 24
Amps and requires a 25 Amp
fuse.
24-VDC, Nominal amps. is 13
Amps and requires a 15 Amp
fuse.
Incorrect wire size that’s
creating a voltage drop when
the amperage is increased.
Wire Size Table
12-VDC
0'-10' - 12 gauge
10'-25' - 10 gauge
15'-25' - 8 gauge
25'-40' - 6 gauge
40'-60' - 4 gauge
24-VDC
0'-10' - 16 gauge
10'-25' - 14 gauge
15'-25' - 12 gauge
25'-40' - 10 gauge
40'-60' - 10 gauge
Reconnect the inlet hose.
Reconnect the hose to the back
of the bowl or vented loop.
Open seacock, the pump
should now be ready to
operate.
4
Sole purpose of the tube connecting the inlet and discharge pumps of the 29200
series Electric conversion kits.
The short answer is to eliminate air locking of the pump on the discharge side, however there are a few
factors that need to be explained to allow a proper diagnosis to be made. These will be discussed below.
How does an Airlock potentially occur?
If you look at the exploded view of the 29200 series unit you will see that the discharge impeller (6) is
mounted above the chopper blade (9) which is suspended in the base of the 29200 series unit. The
discharge of the effluent from the manual toilet base therefore is pulled up from the base of the toilet where
the 29200 unit’s attaches and when this area is filled it can only evacuate through the joker valve (29) due
to the base valve gasket (12) not allowing effluent back into the base of the toilet. However if for some
reason there is a restriction on the inlet and the discharge pump chamber gets filled with air or part air and
part effluent then it is quite possible that the impeller will spin in air and the centrif/chopper blade will
merely circulate the small amount of effluent around the discharge chamber.
This can be exaggerated if there is an anti-siphon loop on the discharge side of the pump as it’s quite
possible to get a head of water keeping the joker valve (29) closed due to pressure.
Please note that this is rarely experienced in a powerboat application where the discharge to a holding tank
is below the toilet and where there is no need for an anti-siphon loop due to the heel angles not being a
concern with regards to siphoning.
Knowing the above then the following questions need to be answered before a diagnostic can be made.
1: is it a power boat or a sail boat?
2: do you have an anti-siphon loop on the discharge?
3: do you have anti-siphon loop on the inlet?
If YES, is it in between pump and bowl like we recommend on the Manual?
Once these questions have been answered the following process can be followed to determine a solution
to the failure.
A: If the failure is that waste is coming up the anti-airlock hose (30) and it is in a POWER BOAT application
with no anti-siphon loops then you can simply remove the tube and block the holes with an epoxy, or clamp
the hose to eliminate this.
Remember fluid takes the path of least resistance so if for example you have an anti-siphon loop on the
discharge but not on the inlet then it will be harder for the fluid to rise up the anti-airlock tube (which
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effectively becomes part of the inlet) than up the discharge as the discharge head will be greater than that
of the inlet.
B: If the failure is that waste is coming up the anti-airlock hose (30) and it is in a SAIL boat application with
an anti-siphon loop on the discharge only then the above comment is true and the suggestion would be to
put an anti-siphon loop on the inlet to level out the heads distances the fluid is required to travel.
C: If the failure is the unit and will not evacuate then it is most likely an airlock. So for a SAIL BOAT
application with anti-siphon loops on both the inlet and the outlet, the most probable diagnostic is that the
anti-airlock tube (30) is blocked or one of the nodes it connects to is blocked.
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