Dometic 3000 User Manual

5

Maintenance intervals and normal parts replacement vary widely depending on numerous factors such as frequency 

of system use, quality of flushing water, etc. The following chart is intended strictly as a general guide in keeping 

the sanitation system 100% ready for any conditions of use.

Toilet flush ball seal cleaning  

Tighten toilet seat mounting 

hardware

Monthly 

Monthly (or as needed)

SeaLand Bowl and Seal Cleaner 

N/A

Replace duckbill valves in Vacuum 

Pump or Vacuum Generator

Replace flush ball seal and flush 

ball (if needed)

Every three years

 

 

Every three years

Duckbill Valve Kit 

 

Flush Ball Seal

Flush Ball

The following parts should be kept available at all times:

Flush Ball Seal 
Flush Ball 
Water Valve 
Vacuum Breaker Kit 
Vacuum Switch Kit 
1.5-inch Duckbill Valve Kit  

           (2 ea. per kit)

see parts list
see parts list
see parts list
see parts list
see parts list
see parts list

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All-ceramic toilet 
 
 
 
Vacuum generating system

Dometic is ready to assist you in the event service is required. Before calling, please have the following information 

available. Your cooperation in having this information ready is appreciated and allows us to better meet your needs.  

Please refer to the Parts Distributor list in the Customer Service section (page 22).
1.  Toilet Model Number

2.  Serial Number

3.  Part Number, Description and Quantity (see parts list insert)

Sanitation hoses should be cleared if toilet will not be needed for an extended period of time (more than two weeks).  
1.  Fill toilet bowl with water and add 4 oz. (120 ml) of biodegradable laundry detergent (should NOT contain bleach). 
2.  Flush toilet, holding pedal down for about two minutes. Close flush ball.
3.  Turn off water supply to toilet. 
4.  Flush the toilet without water, allowing the vacuum pump to shut off after the flush. Repeat three times. (This proce-

dure will minimize any remaining water in the sanitation hoses.) 

5.  Turn off power to the vacuum pump.
6.  Completely pump out holding tank.
If system will be subjected to freezing temperatures, please follow above procedure, then winterize system as described 

in this manual.