LA V A C - Blakes Lavac Taylors
Contents
1. nection to the tank A Toilet discharge flow B Pump out flow using Lavac pump C Pump out flow using quay side pump D Discharge to sea T connection Lavac Pump Hand C and or Electric Diverter T or Y connection 1 Vent breather pipe connected to 177 ID hose 2 Microvent filter see p 20 3 Rinse out facility connect to 3 4 ID hose 4 Ball check valve or vented loop 5 Seacock Fig 4 intake Holding Tank Accessories 1 Two way valve Spares No TLZ9310 The two way valve in the systems above shows how in conjunction with the separate pump on the Lavac toilet bilges showers washbasins holding tanks etc can be emptied Exemplified in fig 5 this clearly saves the cost of separate pump and hull fitting The two way valve we supply has a DISCHARGE positive action is almost mainte nance free and has no parts to wear or corrode Fig 5 2 Holding Tank Breather Filter Microvent Filter This activated Carbon Filter absorbs noxious and unpleasant odours and gases The microvent filter is installed either vertically or horizontally within the breather pipeline in such a way as to minimise the possibility of it coming into direct contact with solid or liquid contents inside the holding tank The carbon filters are easily replaced when their time life has expired KES LAC TALORS m 22 Operation Manual pump op2. General The well known Lavac system is unique and probably the only single action above or below water line marine WC The Lavac has a china pan and is available as either hand or electrically operated On the electric models 12 or 24V DC can be supplied To flush simply close the lid and operate a single pump Pressure is reduced in the bowl as waste goes out and flushing water is drawn in A small air bleed valve in the inlet pipe prevents siphoning The particularly hygienic operation and quietness are characteristics which in themselves make Lavac a popular choice for discerning owners Simplicity of opera tion robustness and reliability are further important features By using a diverter valve the Lavac s pump can also be used for other pumping opera tions such as shower tray discharge bilge pumping or discharge of the holding tank see page 20 Because legislation is now prohibiting over board discharge from toilets or at least making it impractical this edition of the Lavac owners handbook now gives guid ance on holding tanks see pages 18 DT AKESUMCIBIUS Features e Easy and versatile in installation e Can be mounted under bunk or locker and pulled out for use e Pump separate from bowl can be mounted in most convenient position above bowl consistent with instructions For installation behind bulkhead a spe cial hand pump option is available see illustration on p 9 e Particularly
3. e When inlet or Outlet Hoses are plumbed overboard to a below waterline position they must be looped above the waterline to prevent siphoning If toilet is below the waterline Suggested Systems 1 For craft permanently on waters where overbard discharge is prohibited This is a basic sys tem Use of a dock side marina pump out station is used or a DIY outboard pump can also discharge the holding tank A Toilet discharge flow B Pump out flow to quay C Discharge to sea Vent breather pipe connect to 1 ID hose Microvent filter see p 20 Rinse out facility connect to ID hose Ball check valve or vented loop Seacock KES UC TAYLORS ak WN e Ball Check Valve for 34 bore hose only required if draw is more than 36 below toilet or vented loop required if toilet is below waterline Useful statistics One cubic foot contains 6 gallons e One gallon contains 1 6 cubic feet e One gallon of water weighs 10 105 Pump out deck fitting Vented Loop A c Connection 2 Lavac Pump Hand and or Electric Self pump out inboard pump Hand or Electric water intake B C HOLDING TANK Fig 1 20 2 For craft visiting waters where overboard discharge is prohibited Pump out deck fitting This system is simple to oper Vented 8 ate Use of quay side marina Loop va BUD pump out station is not restrict 2 ed by the on board in line MESE pump Hol
4. air can be drawn into the pump the toilet will not operate To prevent leaking it is advis able to use a clear silicone sealant on all screws and joints Spares kits detailed on pages 12 include the perishable parts needed Photo 5 DLAKESUMCHUR Operational Solutions Possible cause No flushing water Inlet seacock closed Open inlet seacock and check that the outlet seacock is open as well Failure of vaccum When the seat and lid are closed and the pump operated the bowl should be sealed for around 30 seconds i e you cannot lift the lid Anything less indicates excess air bleeding into the system Check the condition of the seat and lid seals Are all the hose clips tight Check air bleed plug is in place and that the hole is not too large Inlet hose looped In this instance it may be necessary to fit a greater than 5 feet non return valve in the inlet hose just 1 5m above water above the water line line This maintains a head of water to facilitate the initial syphoning of flushing water Inlet pipe or seacock In this condition the bowl will seal Check inlet outside the boat seacock by closing it removing the hose blocked and then turning on Check inlet hose for blockage Pump will not Closed seacock Stop pumping The pump will be hard and then impossi ble to operate as it builds up pressure You could easily blow a hose connection off Check the hose for blockage from bowl to
5. pump and from pump to seacock The pump is checked via the opening front cover If pressure has built up through excess pumping be very careful to ease the front cover slowly Do not attempt to remove it completely until the pressure has gone blocked hose or blocked pump KES AVAC TAYLORS Operational Solutions Possible cause Pump handle Pump blockage Check through the front cover for blockage easy to operate holding the inlet valve open but bowl will not discharge Scale build up in This scale which builds up over a variable pump time depending on the salinity and temper ature of the water warm and very salty water is the worst condition will gradually reduce pump efficiency to the point of not working The scale can be removed by physically chipping off after stripping the pump or it can be disolved in vinegar if the parts are left to soak Scale will also build in the discharge hose This is best removed by physically bending and working the pipe so that scale is dis lodged and will fall out If it is possible to remove the hose this job is much easier Pump lost prime Pump very rapidly to see if you can regain prime or remove front cover and pour as much water as possible into the pump and retry Loss of prime may be due to lower valve not seating properly and water drain ing from the pump back to the bowl Diaphragm split Check diaphragm and replace if necessary Sulphur dioxide When the t
6. the cost of a separate pump and hull fitting AK ESIAVAC TAYLORS Ideal for Recirculating System Although the Lavac has ideal features for fresh water flushing systems in extreme circumstances it may be pre ferred to minimise the holding tank size and operate a recirculating sys tem Lavac incorporating a sealed seat and lid to the bowl reduces odour considerably below levels encountered with other recirculating toilet systems If the Lavac is being used on a recirculating principle the flushing water pick up pipe in the holding tank must be surrounded by a fine aluminium or brass gauze filter Vacuum Fragments Waste The vacuum fragments waste as it passes through the base opening Solid matter will remain in suspension in the tank thus allowing more effi cient tank emptying This eliminates the need for a macerator Macerators are best avoided if possible because their mechanically operated cutting blades can be jammed with even small objects Macerators are also very noisy 19 Holding Tank Plumbing Key Points e For all systems where pump out via deck fitting or via seacock is not required either can be omitted e f Holding Tank is above the waterline no pump is required for discharge to sea i e open seacock to drain close to hold Also open seacock to allow dis charge to sea via the tank direct from toilet Tank outlet must be installed at bottom of tank and fall continuously to seacock
7. 405 Zenith hinge pin 15 x2 16 x2 TLZ9056 Hinge set 17 x4 17a x2 Lavac Zenith Accessories Part No Description TLZ9096 Clip for pump handle 38 TLZ9310 Diverter two way valve TLZ9460 Bulkhead plate and shroud for U D pump Dimensions and specifications Lavac Zenith toilet Bowl vitreous china for easy cleaning and durability Pedestal injection mould uPVC Outlet can be set to either side or rear of toilet Seat and Lid special purpose plastic mouldings e Hinge assembly injection moulded acetal Stainless steel hinge pin Toilet connections Inlet 19mm 925 bore hose Discharge 38mm 172 bore hose Dimensions 185mm 7 3 C 368mm 14 5 290mm 11 4 410mm 16 2 Exploded diagram of the Lavac Popular BLAKESUMCIUN Lavac Popular Popular Components Diagram No Part No Description 4 TLZ9005 Pedestal base 5 TLZ9010 Pan base joint 51 TLZ8015 x 4 M6 x 50 Pan bolt TLZ8010 x4 Plastic covers TLZ8022 x4 Plastic washer TLZ8021 x 4 Stainless steel washer TLZ8020 x 4 M6 nuts 52 TLZ8025 Popular pan 53 TLZ8031 Popular inlet spigot 541 54R 55 x2 TLZ8056 Hinge set 56 TLZ8065 Popular seat seal 57 TLZ8066 Popular lid seal 58 TLZ8070 Popular seat 59 TLZ8075 Popular lid Lavac Popular Accessories Part No Description TLZ9096 Clip for pump handle 38 TLZ9310 Diverter two way valve TLZ9460 Bulkhead plate and shroud for U D pump
8. Contents Introduction Installation kit Lavac System Zenith Exploded Diagram Parts list Accessories amp specification Popular Exploded Diagram Parts list Accessories amp specification Manual Pump Exploded diagram Parts list Accessories amp specification Electric Pump Exploded diagram Parts list Accessories amp specification Zenith and Popular Spares kits Lavac Operation diagrams Installation Seacocks Lavac toilets Electric pump Holding Tanks General Lavac Plumbing Accessories Operating your marine toilet Lavac Maintenance Replacing perishable parts Operational solutions 10 11 12 13 14 15 17 18 19 20 22 23 24 25 27 eju AY The Lavac Congratulations on the purchase of a Lavac marine toilet Lavac marine toilets are firm favourites with sailors throughout the world providing their owner with a long and trou ble free working life The Lavac is one of the most simple to operate marine toilets available After use the seat and lid are closed and the pump is then operated for 14 16 strokes For full instructions see page 21 As waste is pumped out the bowl is sealed causing a vacuum which draws in the flushing water It s as simple as that Within this handbook you will find informa tion and practical help on installing running and maintaining your Lavac If you require any further help or advice please contact us either by Teleph
9. Dimensions and specifications Lavac Popular toilet Bowl vitreous china for easy cleaning and durability Pedestal injection mould uPVC Outlet can be set to either side or rear of toilet Seat and Lid special purpose plastic mouldings e Hinge assembly injection moulded acetal Toilet connections Inlet 19mm 925 bore hose Discharge 38mm 172 bore hose Dimensions A 185mm 7 3 C 343mm 13 5 352mm 13 9 D 416mm 16 4 Exploded diagram of Hand Pump U D Pump Handle Position T A Pump Handle Position Note Bulkhead plate and shroud for the U D pump makes a neat flush installation Spares No TLZ9460 see installation diagram on p 15 3 LAVAC TAYLORS 8 Lavac Zenith amp Popular Hand Pump Components Diagram No Part No Description 20 TLZ9110 Diaphragm 21 TLZ9175 x 8 2BA x 1 Bolts TLZ9181 x8 2BA nuts 22H TLZ9330 Inlet valve hand TLZ9335 Inlet valve plate 23 TLZ9320 Front cover 24 TLZ9325 Front cover seal 25 TLZ9125 Eye bolt nut 26 TLZ9100 Top cover complete with valves 27 TLZ9340 Outlet valve 28 TLZ9345 x 2 Outlet valve screws long TLZ9350 x 2 Outlet valve screws short 29 TLZ9115 x 2 Diaphragm plates 30 TLZ9120 Eye bolt 35 N A Not available as spares item 36 TLZ9406 Rocker arm hinge pin TLZ9408 x 2 Circlips rocker arm pin 37 TLZ9450 U D Rocker arm 38 TLZ9265 Pump handle 39 TLZ9455 T A Rocker arm Dimensions and specificati
10. IZE 30 25 30 STRANDS 0 25mm Red Brown Red Brown Loom 12 21 KES LAVAC TAYLORS 17 Holding Tanks General Options Recirculating pump out often used for a conversion installation where the toilet compartment is sufficiently roomy The holding tank is usually integrated with the toilet head but with the Lavac used in a recirculat ing system the holding tank can be remote Fresh Water Flush with Pump Out Holding Tank probably the most acceptable system to the user Allows for a larger tank installation as the tank can be positioned any where in relation to the toilet head Holding Tank Capacity If sink and shower waste is also being contained the holding tank must be substantially larger Used with care a shower will require about three gallons each time it is used Obviously both sink and shower waste quantities depend entirely on how the facilities are used as well as the frequency of use The size of a holding tank is entirely dependent on the berth size of the boat and anticipated duration between pump outs A holding tank can never be too large but it can easily be inconveniently small Restriction on size depends on available space for installation and effect on the boats trim The follow ing formula will provide an approxi mate guide to the minimum size of tank which is acceptable Berths x days between pump out x Y gallons capacity of tank For recirculating s
11. ac Economy of Flushing Water Economy of flushing water is a valu able Lavac characteristic for holding tank installations This is also impor tant when flushing water is being drawn from the craft s own water tank Using the on board fresh water supply for flushing should be seriously con sidered It prevents scaling in the sys tem from salt water and dirty oily water entering the bowl The Lavac uses approximately only 3 pints of flushing water per operation With the electric Lavac the quantity of flushing water can be controlled accurately by the time switch This may be helpful for owners frequently entertaining visitors inexperienced on boats Two time switches can be used if a long and short flush option is thought worth while Flexibility Lavac provides the facility to site tanks anywhere in the boat Therefore as well as making maximum use of the tank capacity because of the economy of flushing water used the holding tank can be housed where space is less critical allowing a larger tank to be installed than is possible with some other systems With the Lavac system it is practical to install a high tank Why not consider for exam ple a full height floor to roof bulkhead tank This can be in conjunction with either sea water or fresh water flush systems Diverted Pump Action In conjuction with a two way valve it can carry out other tasks See figs 2 3 and 4 on pages 21 and 22 Fig 5 shows how this saves
12. d for drilling the holes necessary in the platform 2 Securing bolts 6mm 74 should be used to hold down the toilet Do not fix the toilet at this point It is advisable to wait until the hoses are fixed and installation checked 3 We recommend the use of rein forced sanitation grade hose for the Lavac installation Avoid sharp angled or acute bends in either the 15 Lavac Installation inlet and particularly the outlet hoses If it is completely unavoid able to use right angled fittings in the outlet hose then rigid plastic fit tings should be used having an inside radius of not less than 31mm 25 Do not use sharp angled plumbers fittings which can easily cause a blockage 4 Establish a position for the pump where the pump inlet is no lower than the bowl top 5 Bolt or screw the pump in posi tion using 6mm 74 diameter bolts or screws ensuring that the flow arrow on the pump is vertically up or certainly not more than 45 from the vertical IF THE PUMP IS MOUNTED IN ANY OTHER WAY THE INSTALLA TION WILL BE INEFFICIENT IN OPERATION AS THE INLET VALVE CANNOT SEAL EFFECTIVELY 6 Cut the 38mm 172 diameter outlet hose to the lengths required Be sure to allow enough hose from the top of the pump to take the loop above the waterline at maximum heel of the boat For motor vessels this is high enough at maximum angle of roll Attach the two cut lengths of hose from the bowl to the bottom inlet of th
13. ding tank contents Diverter can be drawn through it i A yave Self pump out A Toilet discharge flow Dose pump B Pump out flow to quay Electric 4p C Discharge to sea 1 Vent breather pipe connected to 1 ID hose EE 2 Microvent filter see page 20 3 Rinse out facility connect to 34 fes S Flush ID hose water HOLDING TANK intake 4 Ball check valve or vented loop 5 Seacock Fig 2 3 For craft requiring toilet dis Pump out deck fitting charge to sea or holding tank and pump out of holding tank using the one toilet pump Vented Only installations with Lavac ABIGID 12486 Pump toilets can operate this system Aer Electric A Toilet discharge flow B Pump out flow using Lavac pump C Pump out flow using quay side pump D Discharge to sea 1 Vent breather pipe connected to 177 ID hose Microvent filter see page 20 Rinse out facility connect to 34 ID hose HOLDING TANK Ball check valve or vented loop Seacock KES LAAC TANLORS 224 21 intake ak ON 4 An alternative to fig 3 This sys tem provides a self pump out facility to Pump out deck fitting shore or sea suing the one toilet pump Only installations with Lavac 27 Vente toilets can operate this system When being pumped out by quayside facility this arrangement avoids the tank con tents being drawn through the pump and uses only one sewage pipe con Stop Valve
14. e bulkhead behind the Lavac unit to avoid possible dam age to the lid when opened 16 Lavac Electric pump Installation 1 Connect up wiring as indicated in the diagram The time switch should be mounted through the bulkhead so that only the front flange with push button and shroud are visible to the user Use only stainless steel screws 2 The time switch is set for 30 45 sec onds If you wish to adjust the operating time inlet pipe length will vary between installations turn the small screw in the centre of the back of the switch very slightly in a clockwise direction to length en the time and anti clockwise to reduce it time switch is adjustable between approx 1 second and 10 minutes 3 Ensure when mounting the pump that the flow arrows are facing upwards Do not mount in a horizontal position Also ensure that the pump is no lower than the top of the bowl 4 WARNING Do not operate the switch while using the toilet As a precau tion mount the switch in such a position that children cannot reach it until after use a PUSH BUTTON TIME SWITCH RED or BROWN LEAD TERMINAL BLOCK ON PUMP MOTOR BLACK or BLUE LEAD The Electric Lavac can be fitted with a standby manual pump to provide emergency back up It is easy to upgrade existing hand toilets to elec tric or add a standby pump to elec tric toilets m 5 AMP FUSE HOLDER 12 OR 24 VOLT BATTERY OR DC SUPPLY MINIMUM WIRE S
15. e pump and from the top of the pump outlet to the outlet seacock 7 Connect the 19mm 24 bore inlet hose to the bowl inlet having allowed for a loop similar to the outlet see point 6 and attach the inlet hose to the inlet seacock PEASE NOTE It is absolutely essential that all joints are 10096 sealed No air leakage is permissible ES LAVAC TAYLORS Handle position angle of operation and or outlet direction can be varied by rotating pump body 26 relative to back cover 35 See exploded diagram p 8 If back cover 35 is rotated ensure air bleed hole in back cover is re drilled at lowest point DIRECTION OF OUTLET therefore all hose clips must be tight 8 An important part of the Lavac installation is the air bleed valve which has to be located at the top of the loop of the inlet pipe Drill a 5mm 1 18 diameter hole at the top of the curve of the inlet pipe If the top of the inlet pipe is in a clothing locker ensure that the clothes do not obstruct the air bleed valve Similarly if the hose is hard up below the deck drill the hole slightly to one side at the top of the loop For installations on or above the water line insert the white plastic bleed plug For installations below the water line use the black plastic plug Set of bleed plugs TLZ9251 9 Attach the self adhesive oper ating instructions to the bulkhead near the pump We recommend that a suitable rubber stop is placed on th
16. eration 1 To flush the toilet close the seat and lid and give 8 10 steady pulls using the full movement of the handle Pause for five seconds and then continue pumping as before for a further 5 6 strokes The higher the base of the bowl is above the waterline the more strokes are needed Also see note 8 page 16 It is essential that a sufficient number of strokes are used to clear the system completely Use the full movement of the pump handle Avoid using short jerky strokes The num ber of strokes required will vary according to the length of the hoses NOTE TOLEAVE TOILET BOWL EMPTY OF WATER LIFT SEAT 13 AND THEN OPERATE PUMP 1 Electric pump operation To flush the toilet close the seat and lid and press the push but ton fully in and release it The Lavac electric pump whether incorporated in the Lavac electric toilet or used inde pendently as a pump for fluids should never be operated against a seacock or any other type of valve that is closed or partially closed as this may cause costly damage to the pump Note similar circum stances can arise if the hose is blocked see section on Check points Where a two way valve or divert er valve is used in the system the pump should be switched off whilst the direction of flow is being changed as the valve has a midway closed position Similarly where two or more two way diverter valves are in the system ensure that both
17. he obstruction Replace the front cover and seal and check the operation of the pump If it still does not operate i e empty the bowl with the lid open it will be necessary to remove the pump body from the pump base by unscrewing the 8 bolts around the octagon perimeter and replacing the valves See page 25 26 When re assembling the pump ensure that all screws are tight not over tight If air can be drawn into the pump the toilet will not operate ES LAVAC TAYLORS 30 Note DIAKESUMCINUS
18. l and a strainer fitted Similarly the discharge seacock should protrude to enable it to take the discharge plate 14 Lavac Installation Summary 1 INLET SEACOCK Should be mounted forward of the discharge to avoid recirculating waste We recommend the use of Blakes seacocks 2 PUMP Hand or Electric Diagram on the right shows a U D hand pump installation with U D pump plate and shroud The pump hand or electric must be mounted so that the water flow is vertically upwards through the pump as shown The bottom of the pump must not be mounted at a lower level than the top of the bowl 3 AIR BLEED VALVE A simple plastic plug with a hole drilled into it The plug allows air into the system preventing siphon ing and releasing the vacuum when pumping stops The size of the hole in this valve controls the level of water remaining in the bowl Two valves with different sized holes are provided Spares No TLZ9251 the larger the hole the less water remains in the bowl 4 DISCHARGE SEACOCK 5 BOWL The outlet at the rear of the bowl can be positioned to the left right or centre This can be very helpful for difficult installations 6 U D PUMP Makes a neat flush installation 7 HANDLE CUP KES LAVAC TAYLORS Typical installation Siting and installing the Lavac 1 The Lavac base should be mounted on a hardwood or fibre glass platform approximately 32mm 74 thick A template should be use
19. n off the seacocks You may burst a pipe or damage the toi let otherwise 5 Close the seacocks when you leave the boat This will keep them free and is seamanlike practice 2 Close off the inlet seacock dis connect the hose and drain it off During the laying up period check the interior of the pump and remove any scale that has accumulated and also check that the hole in the bleed valve is clear 24 Maintenance Perishable parts Replacing the seat and lid seals 1 Hook one end of the seal under the rim of the lid stretch the seal around the rim and clip under all way round Photo 1 Repeat for the seat Replacing the perishable pump parts 1 Unscrew the front cover 23 and loosen eyebolt nuts 25 Photo 2 Replace the front cover seal o ring 24 Unscrew the 8 screws 21 around the edge of the octago nal pump body 26 and remove Photo 3 PAK ESIC THU Photo 1 Photo 2 Photo 3 25 Maintenance Perishable parts 3 Unscrew the eyebolt 25 nut 5 Unscrew 2 short and 2 long and remove diaphragm 20 screws 28 to remove the out complete with diaphragm let valve 27 Replace plates 29 Replace diaphragm 20 photo 4 Photo 6 4 The inlet valve and plate 22E 6 Re assemble in reverse order or 22H simply clips out replacing all the stainless steel Replace screws 21 amp 28 When re assembling the pump ensure all screws are tight If
20. nd pump spares kit TLZ0951 Electric pump spares kit TLZ0956 Pan base gasket 5 TLZ9010 Sealing washer for inlet spigot 7 TLZ9035 Rubber washer 17a TLZ9054 Hinge bush 15 TLZ9060 Seal for seat and lid 11 TLZ9065 Handbook TLZLIT Lavac Popular Popular spares kits Description Part No Hand pump kit 12 or 24V electric pump kit Hand pump spares kit TLZ0951 Electric pump spares kit TLZ0956 Pan base gasket 5 TLZ9010 Hinge pad 55 TLZ8061 Seal for seat 56 TLZ8065 Seal for lid 57 TLZ8066 Handbook TLZLIT S LAVAC TAYLORS 12 Lavac operation A Seacocks B Pump C Air Inlet Valve 1 ENSURE SEACOCKS 3 HAND PUMP or ELECTRIC PUIVIP WAIT 60 SEC BEFORE TRYING TO LIFT LID BL AKES AAC TAYLORS 13 Installation seacocks Siting and installing the seacocks Having chosen the type of inlet and discharge seacocks required for your particular needs they should be mounted in the hull We recom mend Blakes Seacocks for use with our marine toilets The inlet is 19mm 34 and the outlet is 38mm 172 The inlet seacock should be about 460mm 18 below the water line and forward of the discharge sea cock On a sailing vessel the dis tance below the water line may have to be more to allow for heel ing The discharge seacock should also be below the water line but need not be as deep as the inlet The location of both seacocks should be convenient for attaching piping to and from
21. oilet is first used the stale air from the inlet is drawn into the boat Algae deposit in the Give the system several good long flush inlet hose es immediately you go aboard been left for some If you can remove the hose filling it and time leaving it to soak in disinfectant will help Pumping disinfectant through the pump will NOT help because the prob lem originates in the inlet hose Too much water Diameter of hole Use a hot needle to slightly increase hole left in bowl after jair bleed valve needs diameter of the air bleed valve or replace use increasing air bleed plugs F Operational Solutions Electric pump Pump not running does not flus sys long enough tem properly Incorrect inle valve fitted Pump not mounted vertically Leak from back of Leakage past pump Eyebolt 30 Nut 25 loose Diaphragm 20 split KES AVAC TAYLORS The pump should run for a minimum of 1 minute and possibly longer in installations where the pipe runs are unusually long Running time can be increased decreased by fractional turns of the small screw locat ed in the centre rear of the time switch Viewed from rear of time switch clockwise adjustment increases running time Only a few degrees of movement should be necessary The electric pump is fitted with a special weighted inlet flap valve and if this is replaced by the normal hand pump valve it can though not invariably detract from
22. one 44 0 1489 580580 Fax 44 0 1489 580581 E mail info blakes lavac taylors co uk or by writing to Blakes Lavac Taylors 13 Harvey Crescent Warsash Southampton SO31 9TA United Kingdom Over many years we have taken advice from sailors around the world concerning their requirements for marine equipment and our current range is a result of this ongoing com mitment If you have any comments or help ful hints that you would like to share with us we would be very pleased to hear from you DT AKESUMCIBIUS Installation kit provided with your lavac All Lavac marine toilets are provided wit the following parts for installation e Pump Hand T A On Bulkhead U D Behind Bulkhead or Electric 12 volt DC or 24 volt DC including wiring loom time switch fuse and fuse holder e Plastic Bleed Plugs Spares No TLZ9251 Self adhesive operating instructions Owners Handbook Because the nature of an installation varies from owner to owner certain components are easier to source locally We therefore feel it is best for you to purchase the follow ing separately depending on your require ments e 4 x 6mm 74 diameter Stainless Steel securing bolts or screws for base e 4 x 6mm 74 diameter Stainless Steel securing bolts or screws for pump e Reinforced sanitation grade hose length dependant on installation 19mm 34 bore for inlet 38mm 172 bore hose for outlet e Hose clips The Lavac System
23. ons Hand pump Hand Pump Diaphragm type Injection moulded plastic body Stainless steel fastenings and handle All rubber components of oil resistant nitrile Dimensions A 170mm 6 6 C 140mm 5 57 B 200mm 7 9 Exploded diagram of the electric pump 12824 Volt Lavac Zenith amp Popular Electric Pump Components Diagram No Part No Description 20 TLZ9110 Diaphragm 21 TLZ9175 x 8 2BA x 1 Bolts TLZ9181 x 8 2BA nuts 22H TLZ9330 Inlet valve hand TLZ9335 Inlet valve plate 23 TLZ9320 Front cover 24 TLZ9325 Front cover seal 25 TLZ9125 Eye bolt nut 26 TLZ9100 Top cover complete with valves 27 TLZ9340 Outlet valve 28 TLZ9345 x 2 Outlet valve screws long TLZ9350 x 2 Outlet valve screws short 29 TLZ9115 x 2 Diaphragm plates 30 TLZ9120 Eye bolt 33 TLZ9421 Crank assembly 60 TLZ9290 12V Motor TLZ9295 24V Motor 61 TLZ9185 x 4 M5 x 22mm bolts 62 TLZ9156 Crank case Dimensions and specifications Electric pump Electric pump e Diaphragm type 12V or 24V DC e Injection moulded plastic body Alloy crancase e Stainless steel crank mechanism with plain bearing e Consumption 5 amps at 12v under load 5 amp fuse supplied Weight 4Kg Dimensions Flow delivery rate 6 gal per min A 178mm 7 C 278mm 11 B 223mm 8 8 D 225mm 10 KES AVAC TAYLORS Lavac Zenith Zenith spares kits Description Part No Hand pump kit 12 or 24V electric pump kit Ha
24. pump efficiency Please check that the arrow on the pump is pointing vertically upwards or that at worst not more than 45 from vertical Leakage is occurring past diaphragm into back of pump If the pump body is mounted with the han dle vertical the leakage will quickly manifest itself as a drip through the air bleed hole at the back of the pump Tighten eyebolt nut 25 For this operation remove front cover 23 as explained in Point 2 Page 25 Silicone sealant is recommended It should be applied to thread of eyebolt before the nut is tightened onto it If problem continues check diaphragm 20 for splitting and replace 29 Operational Solutions Blockages in the pump 1 If a blockage occurs in the pump first pour half a bucket of water in the bowl and then with the lid open pump with even firm strokes until the water leaves the bowl This should clear the pump but repeat if necessary and then close the lid and pump again to replace the correct amount of water in the bowl If the pump will not operate and empty the bowl remove the front cover of the pump This is a quick release fitting that has to be turned in an anti clockwise direction to unscrew A bucket should be held below the pump whilst doing this as the contents of the pump will escape Note the old Mark 3 pump has fixing screws to the front cover Check that the inlet and outlet valves are not being held open by an obstruction If so remove t
25. quiet and hygienic in opera tion e Pump can also empty holding tanks be used as a bilge pump and or shower tray discharge pump Any type of paper can be used although tissue is recommended e Virtually no maintenance Quick release pump cover for easy access Single action operation Exceptionally sturdy and durable Full flow valve system Low water usage Remote holding tank installation if cho sen A water seal is the only certain and complete way of preventing odour from the waste pipe and or holding tank Electric Extra Features e Only marine toilet to offer manual back up with electric version see page 17 e Extremely quiet in operation e Fully marinised automatic adjustable time switch Exploded diagram of the Lavac Zenith PRODUCT UPDATE New Thermo set seal 11 introduced July 1993 with no joins or weld points Cross section below showing longer sealing lip conforms bet ter to contact surface seat or bowl for improved vacuum PRODUCT UPDATE er washer for dome nut D 5 Lavac Zenith Zenith Components Diagram No Part No Description 1 TBB7215 x4 M6 Nuts 2 TLZ9021 x4 Pan bolt washers small TLZ9022 x 4 Pan bolt washers large 3 TLZ9022 x 4 M6 x 35 Pan bolt 4 TLZ9005 Pedestral base 5 TLZ9010 Pan base joint 6 7 8 9 TLZ9031 Spigot assembly 10 TLZ9025 Zenith pan 11 TLZ9065 x 2 Seals for seat and lid 12 TLZ9070 Zenith seat 13 TLZ9075 Zenith lid 14 TLZ9
26. the toilet and easily acces sible for turning off Ensure that they are positioned to accept the hoses before drilling the holes to accept the fixing bolts Fitting the seacocks to the boat For fibre glass boats Glass Reinforced Plastic we recommend the fitting of a wooden pad bonded to the hull slightly greater in diame ter than the seacock flange and 13mm to 19mm 72 to 74 thick see fig 1 To ensure watertight joints on 374 INLET SEACOCK WITH STRAINER WOODEN CHAMFER PAD EDGE a E LLLA E jose Fig 1 GRP hulls a small amount of under water sealing compound should be put between the inside skin and this pad and also under the seacock flange For wooden hulls ensure that drilling is carried out in the centre of RUBBER or NEOPRENE 2221 F STEEL HULL Fig 2 a hull plank For steel hulls see fig 2 the sea cocks must not under any circum stances be bolted directly onto the hull They should be isolated with a gasket and studded with stainless steel fittings This is to prevent elec trolytic action For aluminium alloy hulls special aluminium seacocks should be used Plastic seacocks are often used but are not recommended by Lloyds because of the possibility of melting in the event of a fire Seacock spigots should be cut off to suit the outside of the hull The inlet seacock should be flush with the out side of the hul
27. valves are set for a free dis charge before starting the elec tric pump HAND ELECTRIC VERSION VERSION Led Maintenance Toilet cleaners Seat and lid Only use soapy water Difficult stains can be removed with alco hol e g methylated spirits Pump A useful approach to remove scale build up is to introduce a solution of vinegar into the pump by put ting it into the bowl and with the lid open operate the pump for a few strokes Leave for 24 hours and then flush thoroughly with clean water Bowl The best cleaner for a marine toilet is frequent flushing provided that the seawater is reasonably clean Do not use harsh abrasive clean ers and avoid using domestic cleaners that may contain bleach Flushing through with soapy fresh water from time to time is a good idea This will help in delaying scale deposit and keep the neo prane valves in the pump supple Avoidance of frost or cold damage 1 When laying up the boat for the winter ensure that all the water has been pumped from the sys tem to avoid frost damage The outlet seacock should be closed and the discharge hose disconnected from it Operate the pump into a bucket to empty remnants of water Day to day points to remember 1 Ensure that the operating instructions are mounted where your guests will see them 2 Always fully flush the toilet 3 Occasionally flush through with soapy water 4 Puta notice on the toilet if you tur
28. ystems factor Y 0 5 For fresh water flush systems factor 2 5 These calculations assume low water use toilets are being used ES LAVAC TAYLORS Materials If a holding tank system is being considered some careful thought must be given to the design and construction of the tank Four materials are commonly used for holding tank construction polypropylene glass fibre stain less steel and galvanised steel Polypropylene the smooth inter nal and external finish of this material has the benefit of prevent ing matter from adhering to the walls of the tank and at the same time presenting a clean trim appearance Glass Fibre provides consider able flexibility in design and is easy to alter during or after instal lation should the need arise Stainless Steel is strong and resistant to corrosion but is expen sive in both material and con struction Galvanised Steel provides the cheapest solution but is not totally corrosion resistant Once corrosion starts it spreads rapidly Flexible Tanks Flexible tanks are very easy to install in retrofit situations Ideal on craft where holding facility is sel dom used but two points should be considered carefully i If the boat is likely to encounter much sea movement then flexible tanks are prone to wear and chaffe ii some materials although fluid tight will omit odour and a suitable grade flexible tank must be used 18 Holding Tanks Lav
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