Dometic 500Plus Series, 1000 Series owner manual Troubleshooting Guide

Page 12

TROUBLESHOOTING GUIDE

Problem

 

Possible Cause

 

Service Instructions

13.Vacuum pump is running too

a. Gear motor is worn or defective.

a. Check motor and replace if

slow, overheating, blowing

b. Plugged vent line or vent filter.

 

necessary.

fuses or circuit breaker.

b. Disassemble and clean out vent

 

 

 

 

line. Replace vent filter if

 

c.

Blockage in discharge line.

 

necessary.

 

c.

Disassemble and clean discharge

 

 

 

 

line. Be certain that in-line valves

 

 

 

 

(duckbill valves) and seacock are

 

d. Improper wire size.

 

in proper position.

 

d. Wire size too small. Check

 

 

 

 

electrical diagram for proper wire

 

e. Improper voltage.

 

size for voltage of pump used.

 

e. Check input power for low voltage.

 

f.

Vacuum pump bellows clogged

f.

Remove and clean bellows

 

 

with tissue.

 

assembly. (When flushing toilet,

 

 

 

 

using more water may alleviate

 

 

 

 

this problem.)

 

 

 

14.Toilet will not flush.

a. There is a blockage in the system.

a. Open flush ball and check the 1-

(No vacuum.)

 

 

 

inch (25mm) orifice at the bottom

See problems 3 and 15

 

 

 

of the base for blockage and

if necessary.

 

 

 

dislodge it. Never use drain-

 

 

 

 

opening or other household

 

 

 

 

plumbing chemicals.

 

 

 

 

If blockage is not in base, it may

 

 

 

 

be found in these locations:

 

 

 

 

• outlet of vacuum tank

 

 

 

 

• inlet of vacuum generator

 

 

 

 

• diptube of vacuum generator

 

b. Pump will not run.

 

• inlet of vacuum pump

 

b. See problem 12.

 

c. Duckbill valves in vacuum pump

c. Replace duckbill valves, making

 

 

are inverted due to blocked

 

sure they point in the correct

 

 

discharge line or an attempt to

 

direction.

 

 

pump out against closed seacock.

 

 

15.Blockage between toilet and

a. Collapsed vacuum line.

a. Inspect vacuum line for collapsed

vacuum generator.

 

 

 

condition and replace line if

 

b. Sharp bends or kinks in vacuum

 

needed.

 

b. Inspect vacuum hose for kinks or

 

 

hose.

 

bends. If less than 8.5-inches

 

 

 

 

(216mm) radius on any bend,

 

 

 

 

reposition hose to achieve

 

c.

Improper operation of toilet.

 

minimum 8.5-inch bend radius.

 

c.

Make sure each person using

 

d. Foreign objects were flushed down

 

toilet knows correct procedure.

 

d. DO NOT flush any non-dissolving

 

 

toilet.

 

items (i.e. sanitary napkins, facial

 

 

 

 

tissue, wet strength tissue, paper

 

 

 

 

towels, etc.) or excessive toilet

 

 

 

 

tissue down toilet. Rapid-dissolv-

 

 

 

 

ing SeaLand brand toilet tissue is

 

 

 

 

best.

 

 

 

16.Pump emits odor.

a. Loose or defective hose

a. Tighten connections or replace

 

 

connection on pump.

 

hose and make new connections.

 

b. Loose intake or discharge fittings

b.

Tighten intake or discharge fittings

 

 

on pump.

 

on pump. Replace nipples or

 

c. Worn, torn or punctured pump

 

adapters if necessary.

 

c. Replace pump bellows or

 

 

bellows (vacuum generator) or

 

diaphragm.

 

 

diaphragm (vacuum holding tank).

 

 

 

 

 

 

 

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Contents Vacuflush Dometic Corporation Sanitation SystemsTable of Contents Product FeaturesMarine Sanitation Regulations Important Information Before OperationKEY System Components Proper Cleaning System Start UPWinterizing Maintenance On Board Spare Parts Calculation Chart Per SystemSpare Parts Vacuflush Maintenance KIT Pedestal and Pedal Cover InstallationOrdering Parts Toilet Model IdentificationDeodorants and Special Tissue Accessories Service TIPVacuum Tester Troubleshooting Guide Problem Possible Cause Service InstructionsTroubleshooting Guide Troubleshooting Guide Parts List DescriptionModel 1147 Description 1148 Model 506+ Model 508+ Model 547+ Model 548+ 506+ 508+ 547+ 548+ Description Model 1006 1008 1047 1048 Description Vacuum Generator LOW-PROFILE Vacuum Generator Vacuum Dimensional Specifications Wiring Diagrams Parts Distributors Master Sanitation DistributorsMANUFACTURER’S ONE-YEAR Limited Warranty Exclusions