service-instruction 4617 sani

© Dometic GmbH · 2005 · Subject to change without notice

Publication-No.:599 5242-20 EN

T.B. MB 01/2006

Service-Instruction

English

VACUUM-SANITATION-SYSTEMS for LEISURE VEHICLES

VT 2500

VacuFlush®

1600

HTS-EC

SANI4617

0 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41.1 Important Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.0 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52.1 Maintenance Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52.2 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3.0 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63.1 Troubleshooting VT 2500 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63.2 Troubleshooting VacuFlush, HTS-EC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.0 SYSTEM CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304.1 System Check and Vacuum Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Table of Contents

Warning AttentionInformationEnvironmental

hints

3

4

1.1 Important Information

ATTENTION :

The vacuum pump is energized by vacuum

level and starts automatically !

Shut off the electrical power to the system

before servicing, prevent unintentional

restart !

Works on electrical and electronical compo-

nents must be carried out by qualified per-

sonnel only.

The use of personal protective equipment is

recommended when in contact with waste-

water.

These rules apply to all servicing and repair

works to vacuum sanitation systems on

principle.

1 GENERAL

5

MAINTENANCE 2

ATTENTION :

Pump starts automatically !

Turn off electrical power !

1. Shut off water supply and power to vacuum pump.

2. Apply cleanser onto a cleaning brush, open theflush ball (fig. B) by pressing on flush pedal, andscrub under the seal. Make sure to push brush brist-les between bottom of seal and top of flush ball sur-face to scrub all parts of seal that come into contactwith flush ball.

3. Close ball and wait 2 - 3 minutes.

4. Open flush ball. Use brush and water to rinseaway cleanser and loosened deposits.

5. After cleaning, turn on water and electrical powerto the toilet system.

Fig. A

Fig. B

2.1 Maintenance

2.1 Maintenance Schedule

Maintance Recomm. date of Service Parts RequiredRoutine Maintenance

Toilet flush ball seal monthly SeaLand Bowl and Seal Cleaner

Major System MaintenanceReplace Duckbill Valve Kitduckbill valve every 3 years Part no.: in vacuum pump 86000 385 31 00 76 / 9Replace Toilet flush ball seal and every 3 years Toilet flush ball sealflush ball Toilet flush ball Toilet flush ball (if required)

Maintenance intervals and replacement of normal parts vary widely depending on numerous factorssuch as frequency of system use, quality of flushing water, etc. The following chart is intended strict-ly as a general guide in keeping the sanitation system 100 % ready for any conditions of use.

onlyVacuFlush,see alsoexplodedviews onfollowingpages

all Systems

6

3 TROUBLESHOOTING

RemediesPossible causeFailure

Pump starts, without toilethaving been used.(disturbing noise)Function available.



System sealing damaged.

Flush ball seal

Leakage of pipes and connectionpoints.

In general the following threeareas are to be inspected fordamaged sealing:

Toilet (A)Especially check the seal placedon top of the flush ball.

Connection pipes (B)

Base station (C) with cassette(D) (removable tank).

Check whether water stays in thetoilet bowl.YES :

see item 1-1.03NO:

Keep flush pedal pressed downand clean the seal.WARNING!

Danger of crushing, if the pedalis not kept in position and issnapping back by spring tension.(If required, disassemble upperpart of the toilet to clean or repla-ce the seal).

Check all connection lines bet-

ween toilet and base station. Areconnection lines fit properly?

YES :

see item 1-1.04NO :

Push pipes fully into fitting! (B)All pipes and elbows must be

installed free of unintentionalstress. O-ring seals depressedon one side may leak.

O-ring seals must be free fromdamage and should be lubricatedwith vacuum grease. Apply allstraight pipes exceeding 0.75 mwith fixations, if not provided.

1- 1.01

1- 1.02

1- 1.03

3.1 Troubleshooting VT 2500

REMARK :

Chapter "3.1" describes VT 2500 related problems, whereas Chapter "3.2" describes

problems related to SeaLand Vacuum Sanitation Systems.

7

TROUBLESHOOTING 3

1- 1.01

1- 1.02

1- 1.03

3.1 Troubleshooting VT 2500

A

B

B

C

Apply all straight pipes exceeding0.75 m with fixations

8

3 TROUBLESHOOTING




Pump starts automatically ,although the system is leakproof.

Pump noise appears too loud.

Pedal difficult to push one time.

Pedal always difficult to push.

Cassette in correct position?

Does the seal at the connectionpipe for waste transfer to thebase station still exist, is it unda-maged?

Have there been high temperatu-re changes while moving thevehicle? (e. g. in winter coming from outsi-de into a heated hall)

Did the vehicle manufacturerprovide noise insulation or pro-tection?

Have there been high differencesin altitude during a trip?

Pedal's fastening bolts too tight.

Flush ball sluggish?

YES :

see item 1-1.05NO :

Remove cassette and insertagain. Observe the display panelto see whether the system willrestart operation and the vacuumpump will stop after approx. 1minute.

YES :

Clean seal and apply grease.NO :

Insert new seal.

For reasons of physics tempera-ture changes also causechanging in pressure, which maycause the pump to start.

Recommendation::

Cover the area round the basestation Molan Stabitex.Proper noise protection canreduce noise to below 50 dB A.

Push the toilet flush from time totime when descending down-

valley for significantly more than1,000 m in altitude. This will help

reach vacuum compensation inthe system.

Check pedal's fastening bolts.Untighten bolts and tighten againuntil pedal is sufficiently fixed wit-

hout clamping. Clean pedal seat

and lubricate with Vaseline 1).

Check flush ball. Clean flush balland seals. Then apply siliconspray. (Check material's compa-

tibility)

1- 1.04

1- 1.05

1- 1.06

1- 2.01

1- 3.01

1- 3.02

9

TROUBLESHOOTING 3

1- 1.05

1- 1.04

1- 3.02

1)

Never lubricate with grease on mineral base.

Recommendation:Dometic Grease, tube 50 gPart-No. 242 600 276

a) push back upper part of discharge port and hold tight

b) location of seal rings

location of pedal fastening bolts

a

b

Green ready

Red cassette full

Yellow pump is running

10


Cassette can only be insertedwith increased level of force.

Cassette overfills without displaypanel indicating "cassette full".

Pump will not start.





Connecting pipe for waste trans-fer at the base station soiled?

Too much toilet paper may beclogging the tank full float.

Cassette full. (Does red LEDilluminate?)

Tripping of thermal motor pro-tection. This may happen in caseof excessive (uninterrupted)actuation of toilet (e. g. by play-ing children).

Minimum of 11V on-board volta-ge available?

(Measure voltage always

under load).

Power supply interrupted.

Cassette not in correct position.

The switch for cassette recogni-tion is not actuated.

Clean the connecting pipe andlubricate with grease.Do the seals of the connectingpipe sit correctly? Mount theseals correctly, if necessary.

Clean cassette inside and flushseveral times with clear water.Make sure that inside the cas-sette a (clacking) noise similar toloose parts can be heard..

Empty cassette and insert again.

Shut off the power supply. Pulloff the cassette from the basestation, insert again after approx.1 minute. Via the switch "casset-te recognition" the power circuitis opened and closed again(reset).

If not, correct the on-board vol-tage.>> Please find further informati-on in the vehicle's manual!

Works on electrical components

and equipment must be carriedout by qualified personnel only.

Check the board voltage.Check wiring.>> Please find further informati-

on in the vehicle's manual!

Remove the cassette and insertagain correctly.

Pay attention to possibleobstructions..If mounted in storage rooms:Does shifted freight cause incor-rect location of cassette?

1- 4.01

1- 5.01

1- 6.01

1- 6.02

1- 6.03

1- 6.04

1- 6.05

3 TROUBLESHOOTING

11

TROUBLESHOOTING 3

1- 4.01 a) push back upper part of discharge port andhold tight

b) location of seal rings

1- 5.01

1- 6.01

Red Cassette fullor removed

12

3 TROUBLESHOOTING


Pump is constantly running.

Malodours in the vehicle.Due to the permanent vacuum inan intact system malodours aregenerally not expected.

Malodours in the vehicle.

Water leaking from toilet.

Water leaking from toilet.

Water does not stay in the bowl.The seal (flush ball) should

always be covered by a smallamount of water.

Water does not stay in the bowl.

Water does not stay in the bowl..

Leakage in components and/orconnection pipes.

Activated carbon filter available?

Vent pipe clogged.

Water valve damaged.

Vehicle-related problem withwater supply line.

Flush ball not correctly shut.

Pedal not in position "0" andflush ball not shut.

Flush ball faulty.

For leakage search, please followthe instructions under item 1-1.0x.

Is filter (A) correctly inserted, or isreplacement needed?Filter replacement varies depen-ding on the frequency of toiletuse, however, it should be repla-ced after a period of 3 years atthe latest.

Keep the vent pipe (C) of the acti-vated carbon filter unclogged.Should the pipe be defective (bentor similar) or clogged, replace it.

Has omitting dewatering duringthe frost period caused expandingwater to damage the water valve?

Make sure that the hose clampsand other fittings are in correctposition and fixed properly. Ifnecessary, replace connections ortighten loose connections

Check whether the pedal is inposition "0" and the flush ball iscompletely closed.

Is the spring cartridge defective? Ifdamaged, replace spring cartrid-

ge.

Check the shaft between springcartridge and flush ball for dama-

ge. If damaged, replace shaft.

If seal or flush ball are faulty

(scratched), replace both compo-nents.

1- 7.01

1- 8.01

1- 8.02

1- 9.01

1- 9.02

1- 10.01

1- 10.02

1- 10.03

13

TROUBLESHOOTING 3

1- 8.01

1- 8.02

1- 9.01

1- 10.02

valve

BA

14

3 TROUBLESHOOTING


Flush ball does not open.

Toilet flush insufficient.

(Is the toilet bowl flushed all-round with fresh water?)

Toilet does not flush.

Toilet does not flush.

Malfunction of transmission frompedal to flush ball.

Vehicle related water supplyamiss.The incoming water supply mustprovide a minimum flow of 7litres/minute.

No vacuum

Cassette full. (Does red LED illuminate?)

a) Replace shaft between springcartridge and flush ball, if broken.

b) Check spring cartridge for correct position to the pedal,check for damage. Disassemble spring cartridge and assemble correctly. Replace, if needed.

a) Check the vehicle-related sup-ply line for clogging or damage.

b) Check the vehicle-related waterpump for sufficient capacity.

c) Replace the toilet.

Check the entire system for clog-ging.

Check whether the funnel beneaththe flush ball is obstructed.Remove the cloggingCheck pipes and hose connecti-ons for further obstructions andremove them.

If the base station or the cassetteis affected, remove the obstructionin that range.

Empty cassette and insert again.

1- 11.01

1- 12.01

1- 13.01

1- 13.02

15

TROUBLESHOOTING 3

3 TROUBLESHOOTING

3.1.1 VT 2500 Wiring diagram

16

1. = sensor (Reed contact)2. = switch cassette3. = vacuum switch4. = motor to vacuum pump

Fuse 7.5 Amp.(slow) in vehicle

red

white

VT2500with micro switch

12 VoltDC

12 VoltDC

externalwater pump

control panel(display)

TROUBLESHOOTING 3

17

18

3 TROUBLESHOOTING

3.2 Troubleshooting VacuFlush and HTS-EC Sealand


Water does not stay in the bowl.

Flush ball does not close com-pletely.

Water does not shut off in toilet(toilet overflows).

Water does not enter toilet bowlproperly.

Water leaking from water valve.

Water leaking from rear of toiletbowl.

a. Loose clamp ring.

b. Improper seal around flushball due to dirt or debris onunderside of ball seal.

c. Worn or damaged seal.d. Worn or damaged flush ball.

a. Clamp ring is overtightened, causing too much tension onseal and flush ball.

b. Weak or defective flush pedal return spring.

a. Dirt lodged in water valve seat.

b. Flush pedal cam strap is bentdown, holding water valve open.

c. Worn or defective water valve.d. Worn or defective flush pedal

return spring.

a. Low water pressure.b. Water valve clogged.

a. Loose hose connection.

b. Worn or defective water valve.c. Water line connection not

seated properly.

a. Loose hose connection.b. Loose vacuum breaker.

c. Defective vacuum breaker

d. Cracked or defective toiletbowl.

a. Tighten clamp ring adjusting screw.

b. Inspect flush ball and underside of seal for (foreignobjects), clean as needed.

c. Replace seal. d. Replace flush ball.

a. Loosen clamp ring.

b. Check spring tension by lettingup on flush pedal suddenly. Ifpedal does not snap back,replace spring cartridgeassembly.

a. Disassemble and clean water valve.

b. Bend front of cam strap upabout 2 mm.

(model 1606 only)c. Replace water valve.d. Replace spring cartridge.

a. Check incoming water pressureb. Remove and clean filter screen

inside water valve inlet.

a. Tighten hose clamp.b. Replace water valve.c. Remove water line and assem-ble correctly.

a. Tighten hose clamp.b. Check vacuum breaker/bowl

connection. If loose, push

breaker into bowl.c. Replace vacuum breaker. d. Replace toilet bowl.

2- 1.01

2- 2.01

2- 3.01

2- 4.01

2- 5.01

2- 6.01

19

TROUBLESHOOTING 3

3.2 Troubleshooting VacuFlush and HTS-EC Sealand

Model 1606 / Base Assembly

Model 1609 + 1648 / Base Assembly

pedal cover

pedal cover

filter screen

filter screen

cam strap

top valve cap

top valve cap

valve body

shaft

shaft

valve body

spring cartridge

spring cartridge

flush pedal

adjusting nut

adjusting nut

flush ball

flush ball

ball seal

ball seal

clamp ring

clamp ring

Rear View , Vacuum Toilet

vacuum breaker

hose connection

20

3 TROUBLESHOOTING


Vacuum pump running too muchbetween flushes.(See Vacuum Tester information,

chapter 4)

Toilet will not flush.

(No vacuum).

Vacuum pump will not run.

Vacuum pump is constantlyrunning.

Vacuum pump emits malodour.

a. Flush ball leaks.

b. Vacuum line leaks.

c. Duckbill valves in pump notsealing. (This problem occursgradually. The pump takes lon-ger periods of time to shut offbetween flushes.)d. Pump bellows worn or dama-ged.

a. Vacuum pump will not run.b. Plugged vacuum line betweentoilet and vacuum breaker.c. Duckbill valves or vacuumpump installed backwards.

d. Vacuum pump inlet or outletlines plugged.e. Plugged vacuum tank orvacuum generator.

a. No electrical power.

b. "Tank full" float switch is stuck

c. Loose or broken electricalwiring.

d. Faulty vacuum switch.e. Faulty motor.

a. Excessive vacuum leak.b. Faulty vacuum switch.c. Duckbill valves in vacuumpump are defective.d. Vacuum pump or vacuum

generator needs primed.e. Improper wiring.

a. Loose or defective hose con-

nections on pump.b. Torn pump bellows.

a. Fill water into the bowl. Ifwater is sucked from bowl, seeproblems (2-1.01) and (2-2.01).b. Check all piping connectionsbetween toilet and vacuum tank.c. Disassemble pump.Inspect duckbill valves.Replace damaged or worn val-ves. If worn replace all.d. Inspect bellows in pump forsmall hole or rip. Replace ifnecessary.

a. See problem 2-9.01.b. Disconnect line and clearplug.c. Make certain pump and duck-bill valves are installed correctly.Replace valves if stuck open.d. Disassemble and clean.

e. Unplug vacuum tank or vacu-um generator.

a. Check input power and circuitbreaker.b. Remove switch and clean orreplace.c. Tighten loose connections.

d. Replace vacuum switch.e. Replace motor.

a. See problem 2-7.01.

b. Replace vacuum switch. c. Replace valves.

d. Prime pump by chargingsystem with water.

e. Check wiring, refer to wiringdiagram.

a. Tighten hose connections.b. Replace pump bellows.

2- 7.01

2- 8.01

2- 9.01

2- 10.01

2- 11.01

21

TROUBLESHOOTING 3

2- 7.01 Vacuum Pump

vacuum generator


Vacuum pump running too slow,overheating, or tripping circuitbreaker.

Blockage between toilet andvacuum generator or vacuumtank.

a. Low voltage.b. Loose or corroded wiring.c. Wire cross-sectional area istoo small.

d. Discharge hose is blockedbetween vacuum pump andwaste holding tank.e. Plugged or defective duckbillvalve in vacuum pump.f. Plugged holding tank ventpipe.g. Pump motor worn or defective.h. Pump bellows clogged withtissue.

a. Pinched vacuum line.b. Too many bends in vacuumline.

c. Improper operation of toilet.

d. Flushing non-dissolving itemsobjects down toilet.

a. Check voltage.b. Tighten loose connections,replace corroded wiring.c. Replace with proper cablesize.d. Disassemble and clean hose.

e. Disassemble and clean valve,replace if needed.f. Disassemble and clean hose.

g. Check motor and replace ifnecessary.h. Remove and clean. Use morewater during flushing.

a. Replace vacuum line.

b. Reconfigure vacuum line toreduce number of elbows.c. Make sure toilet is being ope-rated correctly.d.Do not flush any non-dissol-ving items (i.e. sanitary napkins,facial tissue, paper towels etc.)or excessive toilet tissue downtoilet.Rapid-dissolving SeaLand® toilettissue is suited best.

2- 12.01

2- 13.01

3 TROUBLESHOOTING

22

TROUBLESHOOTING 3

23

3 TROUBLESHOOTING

24

Toilet model 1606

Toilet model 1609

1 Seat assembly

2 China bowl kit

3 Ring and half clamp kit

4 Teflon® - and rubber seal kit

5 Floor bolt mounting kit

6 Pedestal cover kit

7 Floor flange seal

8 Funnel kit (includes item 7)

9 Flush ball,shaft and cartridge kit

10 Pedal cover

11 Water valve (kit)

12 Spring cartridge kit

13 Flush lever

14 Base kit (includes items 3 -13)

15 (Water-) Supply hose

16 Vacuum breaker kit

17 Vacuum breaker cover kit

1 Seat assembly

2 China bowl kit





7 Floor flange seal

8 Funnel kit (includes item 7)

9 Flush pedal kit


11 Spring cartridge kit

12 Mounting kit




3.2.1 Exploded views and Parts Lists Sealand

TROUBLESHOOTING 3

25

HTS-EC Holding tank system (Example 60 HTS-EC)

1 Seat assembly

2 China bowl kit





7 Funnel kit

8 Flush pedal kit (includes item 12)

9 Water valve (kit)


11 Mounting kit




1 Discharge pump2 Securing nut3 Washer4 Quick connect, 38mm, elbow5 Slip nut seal6 Diptube kit

7 51 mm UNISEAL®

8 19 mm Inlet pipe, elbow

9 19 mm UNISEAL®

10 Holding tank11 Tank full float12 Kit, Empty level probe13 Kit, Empty mid level probe

14 38 mm UNISEAL®

15 Elbow outlet vacuumpump to tank

16 Kit, Mounting insert for vacuum pump

17 Washer18 Vacuum generator, 12V DC19 Inlet elbow ( from toilet)

Toilet model 1648

3.2.1 Exploded views and Parts Lists Sealand

3 TROUBLESHOOTING

26

Vacuum pump

1 Pan Phillips head screw, flat washer

2 Motor cover, switch

3 Hex washer head screw, flat washer

4 O-ring kit

5 Bushing

6 Shoulder screw

7 Bellows assembly

8 Bellows clamp

9 Screw clamp

10 O-ring

11 Diptube assembly kit (includes it. 10)

12 Duckbill valve kit (2x)

13 Close nipple

14 Hex head screw, flat washer

15 Vacuum switch kit (includes it. 16,17)

16 O-ring

17 Screw clamp

18 Mounting-spindle

19 Vacuum pumpe

20 UNISEAL® nozzle

21 Inlet elbow kit ( includes item 20)

22 Valve nipple

23 Valve adapter

24 Pump body, bottom section

25 Adjusting screw

26 Pump eccentric

27 Round Philps head screw, external tooth lock washer

28 Motor mounting bracket

29 DC-Motor, 12V oder 24 V

30 Pump top closure

31 Hex washer head screw, washers

TROUBLESHOOTING 3

27

Discharge pump

1 Pan head screw

2 Pump cover kit

3 Pump top closure

4 Hex head screw

5 O-ring

6 bushing

7 Shoulder screw

8 Bellows clamp

9 Valve nipple

10 Duckbill valve


12 Bellows assembly

13 Screw set

14 Eccentric

15 Phillips head screws

16 Motor mounting bracket

17 DC Motor, 12V oder 24 V

18 external tooth lock washer

19 Hex washer head screw, with washer

20 Reducing adapter

direction of flowloosen

tighten

3 TROUBLESHOOTING

28

Vacuum generator VG4

1 Union nut

2 Hose connection piece (with it 1 & 3)

3 O-ring

4 Reducing adapter

5 Duckbill valve

6 Valve adapter piece

7 Pump (12V or 24V version)

8 Screw with washer

9 O-ring

10 Duckbille valve sleeve

11 Vacuum switch caver

12 Kit, vacuum switch (with item 11)

13 Tank housing kit

14 Elbow kit (with item 1 & 3)

not shown

Tank seal

TROUBLESHOOTING 3

29

Discharge pump VG4

1 Pump cover

2 Motor mounting bracket, screw withwasher

3 Pump top closure

4 Eccentric, Kit

5 Bushing

6 Bushing clamps

7 Bushing kit (with item 5)

8 O-ring

9 Pump motor DC (12V or 24V version.)


11 Pump mounting parts

12 O-ring

3 TROUBLESHOOTING

3.2.2 Wiring diagrams Sealand

Holding tank system

Holding tank system with VACUSTAT PANEL

-12V--

+12V-- *Fs 3A

*10A circiut breaker

vacuum generator

vacuum

pumpvacuum switch

TankWatch4Level indicator panel with shut-down relay

Tank watch level probes

full

mid

empty

-12V--

+12V-- *Fs 3A

*10A circiut breaker

vacuum generator

vacuum-

pump

vacuum switch

TankWatch4Level indicator panel with shut-down relay

Tank watch level probes

full

mid

empty

* Indicates electrical components supplied by vehicle manufacturer.


30

TROUBLESHOOTING 3

3.2.2 Wiring diagrams Sealand

31

Discharge pump

*10AMP circuit breaker 12V*5AMP circuit breaker 24V

*ON-/OFF - switch


32

4.1 System Check and Vacuum Test

The following section provides instructions onhow to carry out a vacuum test.

For that purpose, Dometic offers a vacuumtester. This gauge recognises pressure diffe-rences, gauge resolution of 1/100" HG (approx.0.34 mbar).The conically shaped rubber plug allows measu-ring different bore diameters.

Digital displayPower supply: 9V monobloc battery

Dometic article no.: 318530003

To check the vacuum, push the flush pedaldown and insert the conical rubber plug into thebore.

Leave the test gauge for at least 15 minutes inthis position.

After 15 minutes, read test results and comparewith vacuum test chart on page 34.

The illustration at the right shows how the testplug is positioned correctly in the bore.

4 SYSTEM CHECK

33

4.1 System Check and Vacuum Test

SYSTEM CHECK 4

To check the cassette and vacuum pump, remo-ve the cover and insert the test plug as shown.

If a base station is installed, disconnect thepiping before.

After the test, mount cover again and reconnectpiping properly.

The piping may be tested at any desired positi-on by inserting the test plug.

4 SYSTEM CHECK

34

Vacuum Test Comparison Chart

Pressure/Time Chart

0,05 In Hg = 1011,31 mBar 1,69 mBar 15 h very good

0,08 ln Hg = 1010,46 mBar 2,54 mBar 10 h very good

0,10 In Hg = 1009,61 mBar 3,39 mBar 7,5 h good

0,15 In Hg = 1007,92 mBar 5,08 mBar 5 h good

0,20 In Hg = 1006,22 mBar 6,78 mBar 3,75 h acceptable

0,30 In Hg = 1002,84 mBar 10,16 mBar 2,5 h acceptable

0,40 In Hg = 999,45 mBar 13,55 mBar 1,875 h not acceptable



Measurement results (15 minutes)Drop in vacuum

(15 minutes)

Hours

of densityAssessment

0,00

200,00

400,00

600,00

mBar

hours

800,00

1000,00

1200,00

0 1 3 5 7 9 11 11+60Sek

NOTE :

This is a typical pressure/time chart of a vacuum toilet. After a period of approx. 8 - 10 hours, the

pump restarts automatically and produces the preset vacuum level within approx. 60 seconds(principle diagram)

SYSTEM CHECK 4

35

Dometic GmbHIn der Steinwiese 16

D-57074 Siegen

Tel.: +49-(0) 271 / 692-0Fax.: +49-(0) 271 / 692 - 300

www.dometic.de/caravan

Dometic ABTorggatan 8

S-17154 Solna

Tel.: +46- 8 501 025 00Fax.: +46- 8 501 025 98

www.dometic.com

service-instruction 4617 sani

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