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Problem
Possible Cause
A1. Clogged or restricted discharge line.
A2. Too many bends or ells in discharge line.
A3. Clogged holding tank or vented loops.
A4. Mineral buildup in hoses and fittings.
A5. Low voltage.
A6. Damage to pump wall.
A7. Full holding tank.
B1. Head not level.
B2. Restriction in line to Intake Pump or
clogged strainer.
B3. Intake Pump sucking air.
B4. Low voltage to Intake Pump.
B5. Intake pumps valves and diaphragm worn.
B1A.Inadequate water supply to water sole-
noid valve.
B2A.Clogged water solenoid valve.
B3A.Faulty or malfunctioning water solenoid
valve or coil.
C1. “Marine life” lodged in rim of bowl.
C2. Improper discharge hose.
C3. Sewage remaining in discharge line.
C4. Clogged holding tank vent.
D. Pressure buildup at seacock(s).
E1. Freshwater models: Water solenoid valve
not shutting completely off.
E2. Raw water models: Below waterline
toilet, vent of vented loop is clogged.
F1. Leaking bowl gasket.
F2. Leaking front cover.
F3. Leaks at hoses or fittings.
F4. Leaking macerator shaft seal.
G1. Object jammed in macerator.
G2. Motor bearings damaged by macerator
seal leak.
A1. Be sure discharge seacock is open. Clean lines. Remove clog.
A2. Replumb to eliminate bends and ells.
A3. Clean vents and any vent valves.
A4. Manually clean affected parts and/or replace hoses.
A5. Check voltage at toilet while running. If less than nominal
voltage of toilet (12, 24, 32, 120V), check condition of batteries.
Check terminals and wire connections for corrosion (heat at
terminals and junctions indicates a bad or corroded connection).
Check gauge of wire to be sure it is not undersize, see
Specification Table.
A6. Replace CH120.
A7. Find a pump out station.
B1. Raise rear of toilet; check with level.
B2. Be sure seacock is open. Clear line - remove clog. Clean
strainer.
B3. Check all connections from intake thru-hull to Intake Pump to
be sure no air leaks are present.
B4. See A5, above.
B5. Replace valves and diaphragm.
B1A.Check available water flow; requires minimum of three GPM
at bowl elbow. 1) Increase line pressure. 2) Install larger
piping. 3) Install higher capacity pressure pump.
B2A.Disassemble and clean waterb solenoid valve. Install Fresh
water strainer (#FWSC) in supply line to water solenoid valve.
B3A.Rebuild or replace water solenoid valve.
C1. Remove and flush bowl with pressure hose to remove all
material. Install strainer in intake line to avoid recurrence.
C2. Replace plastic hose with quality sanitation hose (#SH) with
smooth interior .
C3. Flush toilet long enough to insure waste has passed out of hose.
Replace plastic hose with quality sanitation hose (#SH).
C4. Clean vents and any vent valves.
D. Close seacocks one at a time to determine which one is causing
problem. If intake, install vented loop between pressure side
of pump and bowl. If discharge, install vented loop in discharge
line. If problem continues, contact Raritan Technical Support.
E1. Remove supply hose between toilet and water solenoid valve
at water solenoid valve. If continuous dripping or seeping is
noted, water solenoid valve should be disassembled and cleaned.
If problem persists, rebuild or replace water solenoid valve.
Water solenoid valve requires a minimum of 5 psi at all times
at intake of the valve to stay closed.
E2. Remove vent from vented loop. Clean out foreign matter.
Install an In-Line strainer (#163000) in supply line to Intake
Pump.
F1. Tighten (4) bowl mounting nuts.
F2. Remove front cover (#CH18) and inspect “O” ring for damage.
Replace “O” ring if necessary using Super Lube or waterproof
grease to reassemble.
F3. Check all connections; be sure clamps are tight.
F4. Return to factory for repairs or exchange.
G1. Remove front cover and remove object.
G2. Return motor to factory for servicing or replacement.
TROUBLESHOOTING
A. Poor Discharge,
Especially Solids:
B. Poor Water Flow,
Especially at Front
of Bowl (or no water
flow):
For Pressurized Freshwa-
ter toilets only. Poor
intake water flow.
C. Foul Odors From
Toilet Area:
D. Bowl Fills Up While
Boat is Underway:
E. Bowl Fills Up
Whether or Not Boat
is Underway:
F. Water Leaking
From Macerator:
G. Loud Noises Ema-
nating From Toilet:
Conclusion
12
Set screw must be loosened
with 1/8" hex key before
removing the intake pump
from motor
Tip for Removing Intake Pump
Plug
13
TROUBLESHOOTING