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57

Determine the System Leak Rate

Digital gauge measures 
vacuum in 1/100 Hg in.

Reads 8-hour leak rate in 15 
minutes!

Use SeaLand’s Digital Vacuum 
Gauge (P/N 318530003) to 
confirm the system leak rate and 
find the leak.

1. Be sure that water has circulated through the 

system and the 

duckbill valves are wet.

Turn off water to toilet.

2. Follow the instructions included with the 

vacuum gauge to determine the leak rate.

Drop in Vacuum (15 min)

Extrapolated time between 

pump cycles

> .2” Hg (not acceptable)

2.5 hours

*.15” Hg (acceptable)*

3.3 hours

.10” Hg (good)

5.0 hours

.05” Hg (very good)

10.0 hours

* Maximum acceptable leak rate*

Refer to SuperTech 

manual for instructions on 

using the gauge with a 

vacuum tank and pump.

Summary of Contents for Dometic VacuFlush Series

Page 1: ...0 VacuFlush Installer s Guide This book belongs to ________________...

Page 2: ...t to install BUT certain steps are CRITICAL and must be followed as described These areas are highlighted throughout this guide in RED SeaLand recommends that the OEM label key sanitation system compo...

Page 3: ...ctivated by the loss of vacuum in the vacuum tank Vacuum is maintained at all times The leak down time period should be approximately three hours The pump should not come on within a three hour window...

Page 4: ...Land Fitting Information CRITICAL GUIDELINES 26 27 29 30 31 32 34 34 35 36 37 39 42 Section IV Holding Tanks Simplified layout Holding Tank Locations Diptubes Vent Filters Discharge Pump Level Indicat...

Page 5: ...middle the toilet discharges through the floor SeaLand toilets are available in many different outlet configurations Please review a SeaLand brochure for current model information For models with 147...

Page 6: ...5 Critical Toilet Mounting Clearances REAR SIDE Location of the floor hole for the toilet discharge...

Page 7: ...6 Above the Floor Discharge Side and Rear These joints require SOLVENT BONDING per procedure on page 11 90 Elbow Detail Cannot be used with models ending in 147 or 148 Section I...

Page 8: ...7 Through Floor Funnel Comparison 4 102mm 2 3 4 70mm 8 1 2 216mm minimum bend radius Standard below the floor discharge with hose Standard through the floor funnel Quick turn funnel...

Page 9: ...8 Below the Floor Discharge 08 Model Detail This joint requires SOLVENT BONDING per procedure on page 11 Section I...

Page 10: ...ase and the bottom of the through floor funnel must be mounted on the same surface No gaps allowed between funnel and floor Toilet base must be securely fastened with 4 fasteners provided Follow SOLVE...

Page 11: ...k despite the size of the boat This joint requires PROPER HOSE CONNECTION per procedure on pages 34 36 Special Quick Turn Funnel must be special ordered P N 385310550 Can only be installed with models...

Page 12: ...ng surfaces 2 Use a PVC cement must contain Tetraheyrofuran on both bonding surfaces 3 Connect parts using a twist and hold motion until the glue is set 4 Let joint cure for at least four hours or per...

Page 13: ...ry and secondary filter The secondary filter must be 100 mesh or less Be cold water ONLY Be 13mm MINIMUM ID Provide a MINIMUM flow of 2 gallons min 7 6 liters min at the toilet This requires a 2 8 GPM...

Page 14: ...d Lag bolts and or T bolts MUST be securely fastened in FOUR locations or toilet wobble will result Should debris collect under the ball seal use the brush and cleaner samples to remove provided with...

Page 15: ...ng 4 fasteners 4 When installing a funnel the bottom of the toilet base and the bottom of the funnel flange must be mounted on the same surface 5 Follow proper solvent bonding procedure for rigid PVC...

Page 16: ...15 Section II Vacuum Sources Vacuum Tank and Pump Low Profile Vacuum Generator Vacuum Generator...

Page 17: ...piping from toilet outlet to vacuum source inlet is 6 feet 1 8 meters B Maximum length of vacuum piping from toilet outlet to vacuum source inlet is 30 feet 9 1 meters Each toilet must have a separat...

Page 18: ...Hose The inlet hose of the vacuum generator must not have a side load see picture below Support the hose as necessary Do not let the hose go unsupported up or down It will pull the fitting out of the...

Page 19: ...et Do not mount the pump higher than the vacuum tank outlet Optional straight or 90 swivel quick disconnect fittings are available for suction discharge sides of vacuum pump To pump To pump 307341513...

Page 20: ...r Vacuum Generator athwartships at right angle to keel on sailing vessels compensate with a 15 incline on the discharge side Mounted parallel with keel no incline is needed Mounted athwartship at righ...

Page 21: ...st level The vacuum switch must be on the top when mounted vertically Proper clearance must be allowed for access to the vacuum switch Never tamper with the vacuum switch Vacuum levels can ONLY be adj...

Page 22: ...let and outlet fittings Vent Filters All pumps and tanks must have access to replace if necessary Accessibility is Critical Do NOT do this Insufficient access Vacuum Generator is located behind an app...

Page 23: ...22 Vacuum Tank Critical Access Areas Section II...

Page 24: ...23 VG Critical Access Areas...

Page 25: ...24 Avoid locating pumps under sleeping areas Avoid placing vacuum pumps under sleeping areas X Section II...

Page 26: ...each toilet 3 Support the hose coming from the vacuum generator 4 Mount pumps horizontally 5 Vacuum tanks Locate the outlet of the vacuum tank at the lowest level When mounted vertically the vacuum sw...

Page 27: ...inked hoses found on new boats III Hose and Piping Layout Problems to be Avoided This could be avoided by using a quick turn funnel Hose is routed improperly Hose forced beyond bend radius routed too...

Page 28: ...27 Piping Runs to the Vacuum Source...

Page 29: ...28 Limit of TEN 45 and 90 bends Section III...

Page 30: ...29 Piping Material 1 5 38mm SeaLand OdorSafe 1 5 38mm Pipe Fittings Minimum Inside Bend Radius 8 5 220 mm 2 5 64mm Use Generous Bend Radii Bend Radius Use pipe fitting elbow in this situation...

Page 31: ...uns Difficult to reach wye valve Discharge hose from holding tank always filled with sewage AFTER Now a two head system with 40 gallon holding tank on same footprint Created by matching a SeaLand hold...

Page 32: ...31 Avoid Heat Sources Do not locate in or around hot water heater relief valves they may leak...

Page 33: ...d Binding Corners Sharp Bends Do not restrict the ability to pull the hose or pipe Do not use wire ties to secure the hose or pipe Support flexible hose every 1 foot 0 3 m and rigid pipe every 5 feet...

Page 34: ...33 Do Not Risk Affecting Structural Integrity...

Page 35: ...oap quickly lubricate fitting and inside hose end then push hose onto fitting For second end twist hose counterclockwise before placing onto fitting This will ease installation due to natural twist he...

Page 36: ...chemical reaction with certain PVC formulations SILICONE BASED LUBRICANT has resulted in hoses slipping off of adapters RTV ROOM TEMPERATURE VULCANIZING SEALANT inhibits ability to service system eas...

Page 37: ...aters as aids for installing sanitation hoses Connect hose only to barbless fittings sized at a diameter of 1 53 015 39 4mm Do not use undersized fittings Do not use oversized fittings Clamps 180 apar...

Page 38: ...eate odor permeation problems by trapping waste in unused hose runs To avoid odor permeation problems eliminate unnecessary runs that can trap liquids Use RIGID pipe for any locations of standing sewa...

Page 39: ...38 Hose Avoiding Malodors Before failed hose After replaced with rigid standpipe Use rigid piping for standing sewage Section III...

Page 40: ...itting Information PVC Rigid Pipe 1 inch 38mm PVC pipe cut in 5 foot 1 5m length for easy handling For use with all fittings shown on next two pages Product No Description Length 307001540 1 inch 38mm...

Page 41: ...nnection to 1 inch 38mm PVC pipe 307341812 Double Bend Makes three way connection of 1 inch 38mm PVC pipe 307341158 Sanitary Tee Makes three way connection of 1 inch 38mm PVC pipe 307342971 Special Ad...

Page 42: ...YE Kit Connects intersecting 1 inch 38mm hose segments per indicated flow as shown 307238802 Tee Kit Connects intersecting 1 inch 38mm hose segments per indicated flow as shown 307341113 Reducing Adap...

Page 43: ...t sources 4 Avoid sharp edges where hose or pipe pass through bulkheads or panels 5 Pre heat hose using SeaLand Hose Heaters 6 Follow the hose connection procedure on pages 34 36 7 Double clamp all ho...

Page 44: ...43 Section IV Holding Tanks SeaLand holding tanks available in MANY configurations Rotationally molded polyethylene holding tanks which have thick walls and are resistant to corrosion are recommended...

Page 45: ...ermeation problems by trapping waste in unused hose runs To avoid odor permeation problems eliminate unnecessary runs that can trap liquids Use RIGID PVC pipe for any locations of standing sewage Conv...

Page 46: ...Vacuum flushing action keeps sewage from accumulating between toilet and vacuum generator Sewage collects in the holding tank only Note vented loop is only needed if top of the toilet is below the wa...

Page 47: ...le hose runs should be installed to drain into the holding tank or to the seacock If runs of standing sewage cannot be avoided use RIGID pipe 1 The BEST location for a holding tank is at an elevation...

Page 48: ...g tank MUST be located above the vacuum source This stand pipe must be rigid PVC SeaLand does not recommend locating the holding tank above the vacuum generator but in layouts with no alternatives fol...

Page 49: ...ing Angled suction fitting also lowers the tank contents to provide maximum liquid pumpout Diptubes eliminate standing liquid in the discharge hose eliminating the possibility of odor permeation Diptu...

Page 50: ...owed to replace the vent filters Vent filter is located below top of holding tank 1 Always use reinforced vent hose to prevent kinking 2 Do not allow a low spot in the hose this will allow condensatio...

Page 51: ...he distance below the waterline of the discharge thru hull if connected directly to a seacock X Y feet Maximum Total Head 13 feet To calculate the pump discharge head take the following two measuremen...

Page 52: ...s for Holding Tanks It is important for the probe lengths and float switches to be positioned properly at installation See TankWatch Owner s Manual for specific instructions RECESSED SHOULDER UP RECES...

Page 53: ...e tank 4 If layout must pump up 6 feet 1 83 m is maximum allowable head and a rigid stand pipe must be used 5 Use diptubes to eliminate discharge lines that contain standing sewage 6 Be sure that vent...

Page 54: ...12 14 gage wire 2 1 3 3mm 24v pump draws 3 amps recommend 5 amp fuse and 14 16 gage wire 1 3 2 1mm 2 Always use stranded copper wire preferably tinned 3 Always use crimp type connectors Do not use wi...

Page 55: ...unted securely Pump s mounted securely Holding tank is vented correctly All connections have double hose clamps installed tight and rotated 180 No kinks or sharp bends in hose No crushed or partially...

Page 56: ...valve note time it takes for pump to shut off Vacuum pump should shut off within one minute Inspect inlet water connections on toilet s for leaks Turn off power to the pump and let the system sit for...

Page 57: ...alcohol DO NOT DILUTE the antifreeze with water 7 Reconnect the water inlet to the toilet Flush the antifreeze through the system into the holding tank 8 Empty the holding tank 1 Remove the brass cap...

Page 58: ...ted through the system and the duckbill valves are wet Turn off water to toilet 2 Follow the instructions included with the vacuum gauge to determine the leak rate Drop in Vacuum 15 min Extrapolated t...

Page 59: ...ball from dirt or debris collecting on underside of the ball seal Clean flush ball and underside of ball seal for foreign objects cleaning tool available p n 600344236 Is the water level in the bowl...

Page 60: ...ng completely The spring cartridge is defective Check spring tension by releasing the flush lever suddenly If lever does not snap back replace spring cartridge The flush ball should now close complete...

Page 61: ...l Replace the water valve assembly Water should now be shutting off Does the foot pedal return to normal position when activated NO YES NO The water valve screws or cartridge screw may be over tighten...

Page 62: ...im wash holes Clean the holes using a stiff wire or awl If the flow is still unacceptable replace the bowl Water should now enter the bowl properly The water valve assembly may have a dirty plugged sc...

Page 63: ...plastic foot pedal and water valve assembly Replace the plastic foot pedal assembly The flush lever should now add water YES NO 7 Water is leaking from the water valve assembly The water line connecti...

Page 64: ...Replace the ball seals Water should no longer be leaking YES The vacuum breaker may be leaking Remove the white cap from the vacuum breaker and flush the toilet If water leaks while flushing this is t...

Page 65: ...the vacuum generator Apply solvent to plastic joints with a cotton swab On Ecovac units also check the screws in the discharge cup under the base Leak should be resolved The leak is in the vacuum gene...

Page 66: ...h the toilet three times Does the pump shut off within one minute each time There could be a problem with the pump Check to see that the rod is moving bellows are pumping tighten the set screw replace...

Page 67: ...again Repair open circuit between the vacuum switch and pump Replace the motor NO YES NO Replace the vacuum switch YES NO NO Check for a blockage or kinked hose between toilet and pump Motor may be f...

Page 68: ...correct Check the input power for proper voltage Is the pump working properly now There may be a plugged vent in the holding tank or discharge line Disassemble and clean Check to be certain the seacoc...

Page 69: ...now The duckbill valves in the pump may have inverted due to a clogged discharge line or closed seacock Replace the duckbill valves The toilet should now be flushing properly NO NO There may be a prob...

Page 70: ...tarts automatically Turn off power before servicing Section VII Check for pinched o rings in the pump assembly and replace if necessary Water should no longer be leaking Check for old style bellows cl...

Page 71: ...70 Notes...

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