Dometic 706 owner manual Troubleshooting Guide, Problem, Possible Cause, Service Instructions

Models: 706

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6. Lifting foot pedal does not

TROUBLESHOOTING GUIDE

Problem

 

Possible Cause

 

Service Instructions

6. Lifting foot pedal does not

a. Too much clearance between the

a. Adjust cam strap so clearance is

add water to the bowl.

 

cam strap and water valve.

 

.06 inches (1.5mm) maximum.

 

 

 

7. Water leaking from water

a. Water valve body cracked due to

a. Replace water valve.

valve.

 

freeze damage.

 

 

 

b. Water line connection is loose or not

b. Insure that threads are not cross-

 

 

seated properly.

 

threaded and tighten.

 

c.

Defective water valve.

c.

Replace water valve.

 

d. Stripped threads.

d. Replace water valve.

 

 

 

8. Water leaking from rear of

a. Worn or defective vacuum breaker.

a. Remove white cap from vacuum

toilet bowl.

 

 

 

breaker. Flush toilet. If water leaks

 

 

 

 

during flush, vacuum breaker

 

 

 

 

needs to be replaced.

 

b. Loose vacuum breaker.

b. Secure vacuum breaker

 

 

 

 

connection.

 

c.

Cracked or defective toilet bowl.

c.

Replace toilet bowl.

 

 

 

9. Water is leaking from the

a. Clamp ring may be loose.

a. Remove plastic base cover (on

base/toilet connection.

 

 

 

applicable models) and tighten the

 

 

 

 

clamp ring.

 

b. Ball seals may be worn or defective.

b. Replace ball seals.

 

 

 

10. Vacuum pump running too

a. Water leaks out of bowl between

a. Leave small amount of water in

often between flushes.

 

flush ball and ball seal.

 

bowl. If water is sucked from bowl,

(See Vacuum Tester

 

 

 

see problems 1 and 2.

Information on page 9.)

b. Vacuum line leak.

b. Tighten all connections at toilet,

 

 

 

 

vacuum generator or vacuum hold-

 

 

 

 

ing tank (including hose clamps

 

 

 

 

and threaded spin nuts). If leaks

 

 

 

 

persists, contact SeaLand Product

 

 

 

 

Customer Service.

 

 

 

11. Vacuum pump will not

a. A vacuum leak exists.

a. See problem 9b.

shut off.

b. Insufficient vacuum (pump creates

b. Isolate pump and use vacuum

 

 

less than 10 inches Hg).

 

gauge to check vacuum levels.

 

 

 

 

Could be a plugged discharge line

 

 

 

 

or worn duckbill valves.

 

c. Faulty vacuum switch (pump creates

c. Replace vacuum switch.

 

 

more than 10 inches Hg).

 

 

 

d. Improper wiring.

d. Refer to wiring diagram to check

 

 

 

 

for proper wiring.

 

e. Bellows not pumping.

e. Tighten set screw in eccentric to

 

 

 

 

motor shaft. Otherwise, check

 

 

 

 

for damage to bellows and motor

 

 

 

 

shaft. Replace if necessary.

 

 

 

12. Vacuum pump will not run.

a. No electrical power.

a. Check input power, circuit breaker

 

 

 

 

and fuse.

 

b. Loose or broken electrical wiring.

b. Tighten or reconnect wires at

 

 

 

 

vacuum pump and tank, vacuum

 

 

 

 

generator, or vacuum holding tank.

 

c.

Improper electrical connections.

c.

Make certain wires at vacuum

 

 

 

 

switch are connected to the “B”

 

 

 

 

terminals.

 

d. Faulty vacuum switch.

d. To check vacuum switch, short

 

 

 

 

across “B” terminals with jumper

 

 

 

 

wire.

 

e. Faulty motor.

e. Replace motor.

 

f.

Shut-down relay prevents pumping.

f.

Empty the holding tank.

 

 

 

 

 

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Dometic 706 owner manual Troubleshooting Guide, Problem, Possible Cause, Service Instructions, Lifting foot pedal does not