Dometic 500Plus Series Troubleshooting Guide, Problem Possible Cause Service Instructions

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TROUBLESHOOTING GUIDE

BASE ASSEMBLY

VACUUM

BREAKER WHITE CAP

REAR VIEW, VACUUM TOILET

HOSE

CONNECTION

VACUUM BREAKER/BOWL CONNECTION

Problem

Possible Cause

Service Instructions

1. Water will not stay in bowl.

a. Loose clamp ring.

a. Tighten clamp ring adjusting nut.

 

b. Improper seal around flush ball due

b. Inspect flush ball and underside of

 

to dirt or debris on underside of ball

seal for foreign objects. Clean under

 

seal.

seal if needed (cleaning tool

 

c. Worn or damaged seal.

available – p/n 600344236).

 

c. Replace seal.

 

d. Worn or damaged flush ball.

d. Replace flush ball.

 

 

 

2. Plastic flush ball will not

a. Too much friction between flush ball

a. Lubricate between flush ball and

close completely.

and ball seal.

ball seal with furniture polish or

 

b. Water valve screws are too tight.

cooking spray.

 

b. Loosen screws slightly.

 

c. Defective spring cartridge.

c. Check spring tension by pushing

 

 

flush lever down, then release it

 

 

suddenly. If lever does not snap

 

 

back into original position, replace

 

 

spring cartridge.

 

 

 

3. Flush ball will not open.

a. Broken shaft.

a. Replace shaft.

 

b. Shaft not fully engaged in the

b. Put pressure on shaft from under

 

spring cartridge.

the flush ball (pushing into spring

 

 

cartridge) until it engages. You may

 

 

have to rotate flush ball slightly until

 

 

shaft lines up with square in

 

 

spring cartridge.

 

 

 

4. Water does not shut off in

a. Not enough clearance between cam

a. Adjust cam strap to have .02"

toilet (toilet overflows).

strap and top of water valve cap.

(.5mm) minimum clearance with top

 

b. Dirt lodged in water valve seal.

of valve cap.

 

b. Disassemble and clean water

 

 

valve.

 

 

 

5. Water does not enter toilet

a. Insufficient water flow rate at toilet.

a. Check water flow rate at toilet. Rate

bowl properly.

b. Water valve clogged.

should be 2 gpm (7.6 lpm) at toilet.

 

b. Remove and clean screen located

 

c. Plugged rim wash holes in toilet.

at inlet of water valve.

 

c. Clean holes. If still a problem,

 

 

replace the toilet bowl.

 

 

 

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Contents Vacuflush Dometic Corporation Sanitation SystemsTable of Contents Product FeaturesMarine Sanitation Regulations Important Information Before OperationKEY System Components System Start UP Proper CleaningWinterizing On Board Spare Parts Calculation Chart Per System MaintenanceSpare Parts Ordering Parts Vacuflush Maintenance KITPedestal and Pedal Cover Installation Toilet Model IdentificationDeodorants and Special Tissue Service TIP AccessoriesVacuum Tester Troubleshooting Guide Problem Possible Cause Service InstructionsTroubleshooting Guide Troubleshooting Guide Description Parts ListModel 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