Landa VNG4-2000 User manual

96-610
OPERATOR’S MANUAL
For technical assistance or the dealer nearest you
consult our web page at www.landa.com or call 360-833-1600
■ VNG/VLP4-2000 ■VNG/VLP4-3000 ■VNG/VLP6-3000
■VNG/VLP8-3000 ■VNG/VLP10-2000
VNG
VLP
PRESSURE WASHERS
®

3
CONTENTS
96-610 • LANDA VNG/VLP • REV.9/05
Introduction & Important Safety Information 5-6
ComponentIdentification 7
Installation 8-12
Location 8
Gas Codes 8
Electrical 8
Gas Piping 8,10
InstallationGuide 9
Propane Gas 10
Natural Gas 10
Venting 10
Draft Diverter 10
Water Source 11
Water Connection 11
Inspecting &Testing Gas Piping 11
Gas Pressure 11
Warning and Check Lists 12
Operation Instructions 13
General CleaningTechniques 14
Maintenance 15-18
Troubleshooting Guides 19-23
VNG-S ExplodedViews 24-25
VNG-S Parts List 26-27
VNG-L ExplodedViews 28-29
VNG-L Parts List 30-31
Control Panel Assembly 32
Control Panel Parts List 33-34
VNGL Float Tank & Parts List 35
VNG-L 6-3000, 8-3000 Burner Assembly 36

CONTENTS
496-610 • LANDA VNG/VLP • REV. 9/05
ModelNumber______________________________
Serial Number ______________________________
Date of Purchase ____________________________
The model and serial numbers will be found on a decal attached to
the pressure washer.You should record both serial number and
date of purchase and keep in a safe place for future reference.
VNG-L 6-3000, 8-3000 Burner Parts List 37
VNG-L 10-2000 Burner Assembly 38
VNG-L 10-2000 Burner Parts List 39
VNG Electrical Box Auto Start 40
VNG Electrical Box Auto Start Parts List 41
VNG Electrical BoxTime Delay & Parts List 42
VNG Remote Electrical Box 43
VNG 4-2000, 4-3000, 6-3000 Pump Assembly 44
VNG 4-2000, 4-3000, 6-3000 Pump Assembly Parts List 45
VNG 8-3000, 10-2000 Pump Assembly 46
VNG 8-3000, 10-2000 Pump Assembly Parts List 47
Basic Facts 48
Pressure Equivalents 48
Burner Specifications 49
Parts Specifications, Landa Pump 50-51
Parts Specifications, General Pump 52-53
Warranty

96-610 • LANDA VNG/VLP • REV. 9/05 5
PRESSUREWASHER OPERATOR’S MANUAL
INTRODUCTION & IMPORTANT SAFETY INFORMATION
Thank you for purchasing a Landa PressureWasher.
This manual covers the operation and maintenance of
the VNG/VLP4-20021A, 4-20021A/R, 4-20021B,
4-20021B/R, 4-20021C, 4-20021C/R, 4-20021F,
4-20021F/R, 4-30021A, 4-30021A/R, 4-30021B,
4-30021B/R, 4-30021C, 4-30021C/R, 4-30021F,
4-30021F/R, 6-30021B, 6-30021B/R, 6-30021C,
6-30021C/R, 6-30021F, 6-30021F/R, 4-20024A,
4-20024A/R, 4-20024B, 4-20024B/R, 4-20024C,
4-20024C/R, 4-20024F, 4-20024F/R, 4-30024A,
4-30024A/R, 4-30024B, 4-30024B/R, 4-30024C,
4-30024C/R, 4-30024F, 4-30024F/R, 6-30024B,
6-30024B/R, 6-30024C, 6-30024C/R, 6-30024F,
6-30024F/R,8-30024B, 8-30024B/R, 8-30024C,
8-30024C/R, 8-30024F, 8-30024F/R, 10-20024B,
10-20024C, 10-20024F and 10-20024H washers. All
information in this manual is based on the latest prod-
uct information available at the time of printing.
Landa, Inc.reserves the right to make changes at any
time without incurring any obligation.
Owner/User Responsibility:
Theownerand/or user musthave an understanding of
themanufacturer’s operating instructions andwarnings
before using this Landa pressure washer.Warning in-
formation shouldbeemphasizedandunderstood.Ifthe
operator is not fluent in English, the manufacturer’s in-
structionsandwarnings shall bereadtoand discussed
with the operator in the operator’s native language by
the purchaser/owner, making sure that the operator
comprehends its contents.
Owner and/or user must study and maintain for future
reference the manufacturers’instructions.
This manual should be considered a permanent
part of the machine and should remain with it if
machine is resold.
When ordering parts,please specify model and
serial number.
IMPORTANT SAFETY
INSTRUCTIONS
WARNING:When using this machine basic precau-
tions should always be followed,including the fol-
lowing: CAUTION:To reduce the risk of
injury, read operating instruc-
tions carefully before using.
1.Read the owner's manual
thoroughly.Failuretofollowin-
structions could cause mal-
function of the machine and
resultindeath,serious bodily
injury and/or property damage.
2. Know how to stop the machine and bleed pres-
sures quickly.Be thoroughly familiar with the con-
trols.
3. Stay alert — watch what you are doing.
4. Allinstallations must comply withlocalcodes.Con-
tact your electrician, plumber, utility company or
the selling distributor for specific details.
WARNING: Flammable liquids
can create fumes which can ig-
nite causing property damage
or severe injury.
5. Risk of explosion — do not
sprayflammableliquidsorop-
eratein anexplosivelocation.
Operate only where open
flame or torch is permitted.
WARNING: Keep water spray
away fromelectricalwiring orfa-
tal electric shock may result.
Read warning tag on electrical
cord.
6. To protect the operator from
electrical shock,themachine
mustbeelectricallygrounded.
It is the responsibility of the
owner to connect this machine to a UL grounded
receptacleof propervoltage andamperageratings.
Do not spray water on or near electrical compo-
nents. Do not touch machine with wet hands or
while standing in water. Always disconnect power
before servicing.
WARNING: Spray gun kicks back. Hold with both
hands.
7. Grip cleaning wand securely with both hands be-
fore starting the cleaner. Failure to do this could
result in injury from a whipping wand.
WARNING: Equipment can pro-
duce a high pressure stream of
fluid that can pierce skin and its
underlying tissues, leading to
serious injury and possible am-
putation.
8.High pressure developed by
these machines can cause
personal injury or equipment
damage. Use caution when operating. Do not di-
rect discharge stream at people, or severe injury
and/ordeath may result.Thismachineisto beused
only by qualified operators.
WARNING
RISK OF EXPLOSION:
DO NOT SPRAY
FLAMMABLE
LIQUIDS.
WARNING
KEEP WATER SPRAY
AWAY FROM
ELECTRICALWIRING.
READ OPERATOR’S
MANUALTHOROUGHLY
PRIOR TO USE.
CAUTION
WARNING
RISK OF INJECTION
OR SEVERE INJURY
TO PERSONS. KEEP
CLEAR OF NOZZLE.

96-610 • LANDA VNG/VLP • REV. 9/05
OPERATOR’S MANUAL PRESSURE WASHER
6
IMPORTANT SAFETY INFORMATION
CAUTION: Hot discharge fluid.
Do not touch or direct dis-
charge stream at persons.
9. Never make adjustments on
machine while in operation.
WARNING: High pressure can
cause paint chips or other par-
ticles tobecome airborneand fly
at high speeds.
10. Eye safety devices and foot
protectionmustbe wornwhen
using this equipment.
WARNING:Riskof asphyxiation.
Use this product in a well venti-
lated area.
11. When themachine isworking,
do not cover or place in a
closed space where ventila-
tion is insufficient.
12. Machines with shut-off spray
gun should not be operated
withthetrigger in the off posi-
tion for
extensive periods of time as this may cause dam-
age to the pump.
13. Protect from freezing.
14. Becertainallquick coupler fittingsaresecuredbe-
fore using pressure washer.
15. Do not allow acids, caustic, or abrasive fluids to
pass through the pump.
16. Inlet water must be from a cold, fresh city water
supply.
17. To reduce the risk of injury, close supervision is
necessary when a machine is used near children.
Do not allow children to operate the pressure
washer.This machine must be attended during
operation.
18. The best insurance against an accident is precau-
tion and knowledge of the machine.
19. Do not operate this product when fatigued or un-
dertheinfluenceofalcoholor drugs. Keepoperat-
ing area clear of all persons.
20. Do not replace LP tank while machine is running.
Serious injury could result.
WARNING: Use vapor fuel only.
21. TheVLPmodelsaredesigned
to run on vapor propane fuel.
Do not use liquid fuel.Have a
qualified serviceman install
and service your equipment.
22. Never expose a spark or
flame where there may be
unburned gas present.
23. L.P.gases are heavier than air and will spill out on
thefloor.Therefore alwaysprovideadequatespace
and ventilation around these machines.Install the
machine 18" above the floor.
24. Landa will not be liable for any changes made to
our standard machines, or any components not
purchased from Landa.
25. Do not overreach or stand on unstable support.
Keep good footing and balance at all times.
26. Follow maintenance instructions specified in
manual.
27. When making repairs disconnect from electrical
source and shut off gas valve.
28. Turn burner off and cool to 100°F before turning
machine off. WARNING: If you smell gas,
shut off the gas supply to the
appliance.
29. If gas odor is present turn off
motorimmediately.Extinguish
any open flame, and test all
joints with a soap solution. If
the odor persists, call your
gas supplier immediately.
30. This machine must be attended during operation.
31. Not suitable for connection to Type B gas vent if
the stack temperature exceeds 243° C (470° F).
32. A draft hood shall be installed if this machine is
going to be permanently installed and vented to
the outside of the building.
WARNING
USE PROTECTIVE
EYEWEAR WHEN
OPERATING
EQUIPMENT.
WARNING
RISK OF
ASPHYXIATION. USE
THIS PRODUCT ONLY
IN AWELL
VENTILATED AREA.
WARNING
RISK OF FIRE OR
EXPLOSION, USE
VAPOR FUEL ONLY.
WARNING
RISK OF EXPLOSION:
IF GAS SMELL IS
PRESENT, TURN OFF
SUPPLY.
HOT DISCHARGE FLUID.
DO NOTTOUCH OR
DIRECT DISCHARGE
STREAM AT PERSONS.
CAUTION

96-610 • LANDA VNG/VLP • REV. 9/05 7
PRESSUREWASHER OPERATOR’S MANUAL
COMPONENT IDENTIFICATION
Side Panel
Spray Gun
Draft
Diverter
High Pressure
Nozzle & Coupler
Water Supply Hose
(Not Included)
High Pressure Hose
Variable Pressure
Control Handle
Trigger
Voltage
Light
Pump Light
Pressure
Gauge
Adjustable
Thermostat
Water
Supply
Inlet
Pump
Switch
High
Pressure
Nozzles
Detergent
Bucket (not
included)
Detergent
Valve
Stop
Switch Hour
Meter
Burner
Switch
Incoming
Power
Electrical Box

96-610 • LANDA VNG/VLP • REV. 9/05
OPERATOR’S MANUAL PRESSURE WASHER
8
INSTALLATION
Placemachine inaconvenient locationprovidingample
support, drainage and room for maintenance.
Location:
This machine is certified for indoor installation.Its
location should protect the machine from damag-
ing environmental conditions, such as wind, rain
and freezing.
1. The machine should be run on a level surface
whereit isnotreadilyinfluencedbyoutside sources
such as strongwinds, freezingtemperatures, rain,
etc. The machine should be located considering
accessibility of the components and the refilling of
detergents,adjustmentsandmaintenance.Normal
precautions should be taken by operator of ma-
chine to prevent excess moisture from reaching
power machine or electrical controls.
2. It is recommended that a partition be made be-
tween wash area and machine to prevent direct
spray from spray gun from coming in contact with
machine. Excess moisture reaching pressure
washer or electrical controls will reduce life of ma-
chine and may cause electrical shorts.
3. During installation of machine, beware of poorly
ventilated locations or areas where exhaust fans
may cause an insufficient supply of oxygen.Suffi-
cientcombustioncanonlybe obtained when a suf-
ficientsupplyofoxygen is availableforthe amount
of fuel being burned. If it is necessary to install a
machine in a poorly ventilated area, outside fresh
air may have to be piped to burner and a fan in-
stalled to bring air into area.
4. Donotlocatenear any combustible material.Keep
all flammable material at least 20 feet away.
Allow enough space for servicing the machine.
Localcodewillrequirecertaindistancesfromfloor
and walls. (Two feet away should be adequate.)
AVOID SMALL LOCATIONS OR AREAS NEAR
EXHAUST FANS.
Gas Codes:
Confer with local gas company and with proper mu-
nicipal officials regarding any specific code or regula-
tions governing the installation. The installation must
conform to local codes.
Electrical:
The machine, when installed, must be electrically
grounded in accordance with local codes. Check for
proper power supply using a volt meter;check the se-
rial plate for the correct requirements.
Gas Piping:
Allpiping must complywithlocalcodes and ordinances
of the National Fuel Gas Code.A sediment trap or drip
leg must be installed in the supply line to the burner.
See figure 1.
A union shall be installed in the gas line adjacent to
and upstream from the control manifold and down-
stream from the manual main shut-off valve.
A1/8"N.P.T.plugged tapping accessiblefor test gauge
connection shall be installed immediately upstream of
the gas supply connection for the purpose of deter-
mining the gas supply pressure to the burner, and to
prevent damage to gas valve.
If a manual gas shut off valve is not in the gas supply
line within six feet of the machine and in an accessible
location, one shall be installed.
A manual shut-off valve shall be installed in the gas
supplylineexternal to the appliance.See Figure 2.The
gas line should be a separate supply direct from the
meter to the burner. It is recommended that new pipe
beused and locatedsothat a minimumamount ofwork
will be required in future servicing.The piping should
be installed to be durable, substantial and gas tight.It
shouldbeclearandfreefrom cutting burrsanddefects
instructure of threading.Cast iron fittings oraluminum
tubingshouldnot be used forthe maingascircuit.Joint
compounds (pipe dope) should be used sparingly on
male threads only and be approved for all gases.
Figure 1: Drip Leg
3 in. (76.2
mm)
MINIMUM
3 in. (76.2 mm)
MINIMUM
Sediment trap (drip leg) must be
installed in the supply line.
Drop Gas
Valve
Gas
Valve
1/4"Test Port
(6"-14 WC or 1/2"
PSIG)

96-610 • LANDA VNG/VLP • REV. 9/05 9
PRESSUREWASHER OPERATOR’S MANUAL
12.00"
2.00"
High Pressure
Out 3/8"
HP Nipple
12.00" Dia.
25.00" Dia. 24.00"
Control
Panel
Detergent In
5.00"
1.00"
2.00"
1.50"
1.50"8.75"
5.75" 5.00" 6.00"
57.00"
Gas In
1" NPT-M
Elect. In
3/4 NPT
42.63"
5.75"
21.21"
8.75" 5.00"
Water In 3/4" GHF
69.13"
Electric
Gas
Exhaust Gases
12" Dia.
44.13"
VNG6-3000, 8-3000, 10-2000
18.25" 3.25"
10.00" Dia.
19.50" Dia. 21.00"
Control
Panel
Detergent In
5.00"
1.00"
2.00"
1.50"
1.50"
2.00"
5.25" 6.00"
47.50"
Gas In
1" NPT-M
Elect. In
3/4 NPT
36.00"
High Pressure Out
3/8" HP Nipple
5.25" 3.50"
Water In 3/4" GHF
Electric
Gas
32.25"
45.00"
Exhaust Gases
10" Dia.
14.50"
VNG4-2000, 4-3000, 4-4000
INSTALLATION

96-610 • LANDA VNG/VLP • REV. 9/05
OPERATOR’S MANUAL PRESSURE WASHER
10
Propane Gas:
The following pipe sizes should be used between the
regulator and the gas valve on the burner.
Distance From Regulator Pipe Size
0 - 50' 1" 1 PS
50' - 100' 1-1/2" 1 PS
100' - 200' 1-3/4" 1 PS
Natural Gas:
The following pipe sizes should be used between the
meter and the cleaner.
Distance From Regulator Pipe Size
0 - 50' 1-1/2" 1 PS
50' - 100' 2" 1 PS
100' - 200' 2-1/2" 1 PS
Venting:
Becausethismachineisinstalled indoors,regulationsor
ventilation concerns may call for a chimney or furnace
pipe.
When venting the machine, if the machine is to be in
an enclosed area with a stack on it, be sure the flue
pipe is the same size as the stack on the machine.
Poordraft will cause themachinetosootandnotoper-
ate efficiently. When placing the machine for installa-
tion, keep in mind that the machine should be posi-
Location of union and drip leg for connecting conversion
burner to house piping.
Control
Manifold
Figure 2: Union Location
3 in. (76.2 mm)
MINIMUM
Floor Level
Tee
Flow
Manual
Shut-off
Valve
1/8 in. N.P.T.
Plugged Pressure
Gauge Port
Union
Pipe Cap
tionedin suchamanner thatthestackwillbe asstraight
as possible and protrude through the roof of the build-
ingataproperlocationandatsufficientheighttoelimi-
nate down draft.The flue pipe of a gas fired machine
shall be installed with a down draft diverter.
Input - BTU Per Hour Draft Hood & Flue Pipe
Size
410,000 - 600,000 10 inch
600,000 - 750,000 12 inch
Draft Diverter:
The draft diverter (figure 3) should be installed at least
one(1)footabovetheheatingcoil.Thediverterenhances
the draft through the burner by severing the chimney ef-
fectcreatedinsections offurnacepipepositionedbelow.
It also helps prevent freezing of the coil due to wind chill
factors.
Figure 3
Optional
Whenthepressurewasherisinstalledin atightlyclosed
room without ventilation openings to the outdoors or
other rooms, provisions shall be made for supplying
air for combustion through special openings, one near
the floor line and the other near the ceiling, each to be
sized on the basis of one square inch or more of free
area for each 1,000 BTU input per hour.See Figure 4.
Whenaroom is of unusuallytightconstruction and has
a ventilating fan, which may be used for exhausting air
to outdoors - or has a vented fireplace - it is recom-
mendedthatcombustionairbesuppliedtotheenclosed
room through intakes extending to the outside of the
buildingandterminatingin downturnedfittings,suitably
arrangedto preventobstructionfrom snoworrain,and
including a protecting screen not smaller than 1/4 inch
mesh.
Figure 3
INSTALLATION
Ventilating Air Opening 1 sq. in.for each 1000 BTU per hour input.
Illustration showing air openings necessary to supply air for
combustion when heating appliance is installed in an enclosed room.

96-610 • LANDA VNG/VLP • REV. 9/05 11
PRESSUREWASHER OPERATOR’S MANUAL
Water Source:
Watersourcefor machine should be supplied bya5/8"
I.D.garden hose with a city water pressure of not less
than 30 psi.If the water supply is inadequate, or if the
gardenhoseiskinked,the machine will runveryrough
and the burner will not fire.
Water Connection:
Connect the high pressure hose by pulling the coupler
collar back and then inserting it onto the discharge
nipple.Secure it by pushing the collar forward.
Attach the wand into the trigger spray gun using teflon
tape on the pipe threads to avoid leaks.
Inspection andTesting Gas Piping:
The building structure should not be weakened by in-
stalling the gas piping.The piping should not be sup-
ported by other piping, but should be firmly supported
with gas hooks, straps, bands or hangers. Butt or lap
weldedpipe should not berun through or in anairduct.
Beforeturning gas underpressureintopiping, all open-
ingsfrom which gas can escape shouldbe closed. Im-
mediately after turning on gas, the system should be
checked forleaks.Thiscan be done bywatching the 1/
2 cubic foot test dial and allowing 5 minutes to show
any movement, or by soaping each pipe connection
and watching for bubbles. If a leak is found, make the
necessary repairs and repeat the above test.
Defective pipes or fittings should be replaced and not
repaired.Neveruse a flame or fire in anyform to locate
gas leaks; use a soap solution.
After the piping and meter have been checked com-
pletely, purge the system of air.DO NOT bleed the air
inside an enclosed room.
Theappliance and its individual shut-off valvemustbe
disconnected from the gas supply piping system dur-
ingthepressuretestingof that system at test pressure
in excess of 1/2 psig or damage to the gas valve will
occur.
Gas Pressure:
The ideal incoming gas pressure is 11 w.c.i. (water
column inches –minimum 6 w.c.i., maximum 14 w.c.i.
or 1/2 psig).The correct operating manifold pressure
for natural gasis3.5w.c.i.Theoperating manifoldpres-
sure for propane gas is 11 w.c.i. The gas valve pres-
sure regulator can be adjusted between 3 and 4 w.c.i.
natural gas or 6 and 11 w.c.i. for propane.
Ifthedesired input rating cannot beobtainedwithinthe
above manifoldpressure adjusting range,the nextsize
larger or smaller burner orifice should be used.
WARNING & CHECK LIST
WARNING
1. Installationor servicing ofgasappliancesandcon-
trols must only be performed by qualified person-
nel.Afterinstallationor servicing,testmanualvalve,
operatingvalves,pressureregulator,andautomatic
shut-off valve for proper operation.
2. Installinasuitabledry location.The machine must
be located in an area properly protected from the
weather.
3. Shutoffgasandelectricity beforestartinginstalla-
tionorservice.Turngas backontotestoroperate.
4. DO NOT connect pressure washer before pres-
sure testing gas piping.Damage to gas valve may
result (6 - 14 w.c.i.or 1/2 psig).
5. DO NOT insert any object other than suitable pipe
or tubing in the inlet or outlet of the gas valve.In-
ternal damage may occur and result in a hazard-
ous condition.
6. DO NOT grip gas valvebodywithapipewrenchor
vise.Damagemayresultcausing gas leakage.Use
inlet or outlet bosses or a special body wrench.
7. DO NOT short the gas valve terminals.
8. DO NOT allowanyflametoimpingeontheregula-
tor vent tubing if supplied. It may clog and cause
gas valve malfunction.
9. DO NOT use the gas cock to adjust the gas flow.
10. In case main burner fails to shut off, turn off gas
supply.
11. Keep all combustible materials away from gas ap-
pliances. DO NOT allow lint or dust to collect in
burner area.
12. Dials must only be operated by hand. Never use
pliers, wrenches or other tools to turn dials.
13. Leak test with a soap solution after installation or
service with themainburner on.Coatpipeand tub-
ing joints, gaskets, etc.Bubbles indicate leaks.
14. If the machine is installed in an enclosed room,
care should be taken to ensure that an adequate
supply of air is available for combustion and venti-
lation (1 sq. inch per 1000 BTU).
INSTALLATION

96-610 • LANDA VNG/VLP • REV. 9/05
OPERATOR’S MANUAL PRESSURE WASHER
12
INSTALLATION
CHECK LIST BEFORE STARTING:
WARNING
HAS ELECTRONIC
SPARK IGNITION. DO
NOT ATTEMPTTO
LIGHT MANUALLY.
CAUTION: If“NO”has been checked on any of the
above questions,do not operate the machine.
CAUTION: This machine is
equipped with an electronic ig-
nitionsystem. Lighting ofthe pi-
lot is accomplished through
electronic spark ignition.Do not
attempt to light the appliance
manually as a burn injury or
electrical shock may result.
YES NO
Has gas supply been inspected by an
authorized contractor to meet local codes?
Is machine protected from downdraft and
excessive wind?
Is machine shielded from moisture or water
spray?
Is the voltage correct and are the circuit
breaker and supply cord adequate
according to specifications and serial plate
notation?
Is the machine electrically grounded?
Is there ample water supply?
Have all flammable liquids or gases been
removed from installation location?
Is there adequate gas supply for the BTU
rating of the burner?
Is incoming gas supply pressure between
6 - 14 water column inches or 1/2 PSIG?
Has the proper gas regulator been
installed for pressure and volume?
Is the machine properly vented to allow
adequate air flow?
Are the propane tanks large enough,
according to rating to prevent freezing?
Have gas lines been checked for gas
leaks?
Have gas lines been checked with local
codes?
Have all operators using this machine
been instructed properly & have they read
the manual?
Has the machine been installed according
to operator's manual instructions?
FORYOUR SAFETY READ BEFORE LIGHTING
WARNING
If you do not follow these instructions exactly, a fire or
explosion may result causing property damage, personal
injury or loss of life.
A. Thisappliancehas an electronic ignitionsystem.When
lighting the pilot, follow these instructions
exactly.
B. BEFORE LIGHTING smell all around the appliance
area for gas. Be sure to smell next to the floor
because some gas is heavier than air and will settle
on the floor.
FORYOUR SAFETY
"WHATTO DO IFYOU SMELL GAS"
•Do not try to light any appliance.
•Do not touch any electrical switch, do not use any
phone in your building.
•Immediately call your gas supplier from a neighbor's
phone. Follow the gas supplier's instructions.
•If you cannot reach your gas supplier, call the fire de-
partment.
C. Use only your hand to turn the gas control. Never use
tools.If the knob will not push in or turn by hand, don't
trytorepairit;call a qualified servicetechnician.Forced
or attempted repair may result in a fire or explosion.
D. Do not use this appliance if any part has been under
water. Immediately call a qualified service technician
to inspect the appliance and to replace any part of the
control system and any gas control which has been
under water.

96-610 • LANDA VNG/VLP • REV. 9/05 13
PRESSUREWASHER OPERATOR’S MANUAL
OPERATION INSTRUCTIONS
1.STOP! Read operator’s manual
beforeoperatingthismachine.
Failure to read operation and
warning instructions may re-
sultin personal injuryorprop-
erty damage.
2. Turn all switches off.
3. Review installation instruc-
tions.
4. Connectwatersupplyhose to
the inlet connector and turn water on. Check for
water leaks and tighten as needed.
5. Turn on the maingassupplyand turn the gasvalve
control knob into the “ON” position (see page 14).
6. Closethesteamknob and detergent valvebyturn-
ing clockwise and setting the temperature control
knob between 200°- 225°F.
7. Attach the desired high pressure nozzle into the
wand quick coupler by pulling the coupler collar
back and inserting the nozzle. Secure nozzle by
pushing the coupler collar forward.
8. Turnthepumpswitchontostartthemachine.When
spray gun is closed a time delay feature will turn
the machine off.
9. For hot water, push the burner switch to the ON
positionandpullthetriggeronthe spraygun.Spark-
ing begins, the pilot gas ignites and then the igni-
tor/sensor will turn the main burner on. Optional
remote control requires the pump switch to be
turned ON before the burner and detergent
switches will turn on.
10. Toapply detergent, openthedetergent valvecoun-
terclockwise making sure that the detergent pick
up tube is in the detergent solution and not suck-
ingair.With optional remotes,thedetergent switch
needsto be turnedtotheOFF position before turn-
ingtotheONposition to activate the detergent so-
lenoid.
11. To Stop: Turn the burner switch off and place the
detergent pick-up tube into fresh water. Open the
detergentvalve and trigger spray gun allowing de-
tergent lines to be flushed and the burner to cool.
Otherwise, coil damage will result.
12. Whensteam is needed,remove thesidepanel and
turn the steam knob counterclockwise.Then turn
the temperature adjustment knob to 275°F.
13. After water has cooled, turn pump switch to OFF
position. If the machine is going to be off for an
extended period of time, put the manual valve on
the gas valve into the OFF position.
14. Turn the water off.Protect from freezing.
WARNING
READ OPERATOR’S
MANUAL THOROUGHLY
PRIORTO USE.
Selection of high or low pressure is accompanied by
turning the handle. Note: High pressure nozzle must
be inserted at end of wand to obtain high pressure.To
apply soap read operator's manual.
Variable Pressure
Control Handle Trigger
Variable Pressure
Wand (VP)
High
Pressure
Nozzle
Brass Soap
Nozzle

96-610 • LANDA VNG/VLP • REV. 9/05
OPERATOR’S MANUAL PRESSURE WASHER
14
CLEANINGTECHNIQUES
Pre-rinse cleaning surface with fresh water.Place de-
tergent suction tube directly into cleaning solution and
apply to surface at low pressure (for best results, limit
yourworkareatosectionsapproximately6 feetsquare
and always apply detergent from bottom to top).Allow
detergent to remain on surface 1-3 minutes. Do not
allowdetergent to dry on surface.Ifsurfaceappears to
be drying, simply wet down surface with fresh water.If
needed, use brush to remove stubborn dirt. Rinse at
high pressure from top to bottom in an even sweeping
motion keeping the spray nozzle approximately 1 foot
fromcleaningsurface.Use overlappingstrokesas you
clean and rinse any surface.For best surface cleaning
action spray at a slight angle.
Recommendations:
• Before cleaning any surface, an inconspicuous
areashouldbecleaned to test spray pattern and
distance for maximum cleaning results.
• If painted surfaces are peeling or chipping, use
extremecaution aspressure washermayremove
the loose paint from the surface.
• Keepthespraynozzleasafedistancefromthe sur-
faceyou plantoclean.Highpressurewasha small
area,thencheckthesurfacefordamage.Ifnodam-
age is found, continue to pressure washing.
CAUTION - Never use:
• Bleach, chlorine products and other corrosive
chemicals
• Liquids containing solvents (i.e., paint thinner,
gasoline, oils)
• Tri-sodium phosphate products
• Ammonia products
• Acid-based products
These chemicals will harm the machine and will dam-
age the surface being cleaned.
GENERAL CLEANINGTECHNIQUES
RINSING
It will take a few seconds for the detergent to clear.
Apply safety latch to spray gun. Select and install de-
sired high pressure nozzle. NOTE: You can also stop
detergent from flowing by removing detergent siphon
tube from bottle.

96-610 • LANDA VNG/VLP • REV. 9/05 15
PRESSUREWASHER OPERATOR’S MANUAL
MAINTENANCE
PREVENTATIVE
MAINTENANCE
1. Check to see that water pump is properly lubri-
cated.
2. Follow Winterizing Procedures to prevent freeze
damage to the pump and coils.
3. Always neutralize and flush detergent from sys-
tem after use.
4. Ifwateris knowntobehighinmineralcontent,use
a water softener in your water system or de-scale
as needed.
5. Donotallowacidic,causticorabrasivefluids to be
pumped through the system.
6. AlwaysusehighgradequalityLanda cleaningprod-
ucts.
7. Never run pump dry for extended periods of time.
Shut off timer will be set for two minutes.
8. Periodically delime coils per instructions.
It is advisable, periodically, to visually inspect the
burner.Check air inlet to make sure it is not clogged or
blocked. Wipe off any oil spills and keep this equip-
ment clean and dry.
The areas around the Landa washer should be kept
clean and free of combustible materials, gasoline and
other flammable vapors and liquids.
Theflowof combustionand ventilatingair to the burner
must not be blocked or obstructed in any manner.
Note:Pump damage mayoccur if raninbypass longer
than two minutes.
MAINTENANCE AND SERVICE
Spray Nozzles
Each machine is equipped with one or more spray
nozzles, depending on model.Different spray nozzles
arecalibratedforeachmachinedependingontheflow
and pressure of that particular model. Spray nozzles
vary in bore size and angle of spray. Popular spray
angles are 0°, 15°, 25°, 40°. When ordering, please
specify size and angle of nozzle. Nozzle size for each
machine is located on the serial plate.
Unloader Valves:
Unloader valves are preset and tested at the factory
before shipping.Occasionaladjustmentof theunloader
may be necessary to maintain correct pressure.
Winterizing Procedure:
Damage due to freezing is not covered by warranty.
Adhereto the followingcoldweather procedures when-
ever the washer must be stored or operated outdoors
under freezing conditions.
During winter months, when temperatures drop below
32°F, protecting your machine against freezing is nec-
essary.Siphoning a small amountofantifreezeinto the
system is recommended. This is done by pouring a
50:50 mix of antifreeze and water into the float tank
and then siphoning 100% antifreeze through the de-
tergentline with thepumpon.Ifcompressedairis avail-
able, an air fitting can be screwed into the float tank
strainer fitting and by injecting compressed air, all wa-
ter will be blown out of the system.The use of a draft
diverter will prevent the wind chill factor from freezing
the coil.
Low Pressure Diagnosis
(Machines with shut-off spray gun)
Refer to theTroubleshooting Chart for low pressure.If,
after referring to the chart, the trouble is found to be
either the unloader or the pump, your next step is to
determine which one is the problem.This can be done
by eliminating the unloader from the system and at-
taching a 50' discharge hose directly to the pump. If
high pressure is developed in this manner the pump is
good, and the unloader needs to be repaired or re-
placed.If low pressure is still present the pump needs
repairing.
CAUTION:When using this procedure to test com-
ponents, keep the spray gun open at all times.
High Limit HotWaterThermostat:
For safety, each machine is equipped with a high limit
control switch.In the event the temperature of the wa-
ter should exceed its operating temperature, the high
limitcontrolwill turn the burner off until the watercools.
Pumps:
Use only SAE 30 weight non-detergent oil.Change oil
after first 50 hours of use.Thereafter, change oil every
three months or at 500 hour intervals.Oil level should
be checked through use of the dipstick found on the
top of the pump or by the red dot visible through the oil
gauge window.Oil should be maintained at that level.

96-610 • LANDA VNG/VLP • REV. 9/05
OPERATOR’S MANUAL PRESSURE WASHER
16
MAINTENANCE & SERVICE
HEATING COIL
Condensation from Heating Coil
Whencold waterisbeing pumped intothewaterheater
coil, and the burner is on, condensation will form on
the coil and drip down into the burner compartment,
giving the appearance of a leaking coil, particularly on
cold humid days.
To Check Water Heater Coil for Leaks:
With the main burner “OFF”start machine and allow it
to run a few minutes. Look into the burner compart-
ment with a drop light or flashlight. If no leaks are vis-
ible, then water dripping from coil is from condensa-
tion.
Deliming Coil:
In alkaline water areas, lime deposits can accumulate
rapidly inside the coil pipes.This growth is increased
by the extreme heat build up in the coil.The best pre-
ventative for liming conditions is to use high quality
cleaning detergents. In areas where alkaline water is
an extreme problem, periodic use of Landa Deliming
Powderwill remove lime and other deposits beforecoil
becomes plugged. (See Deliming Instructions for use
of Landa Deliming Powder.)
Periodic coil deliming is recommended.
1. Fill a container with 4 gallons of water, then add 1
lb.of deliming powder.Mix thoroughly.
2. Remove nozzle from spray gun assembly and put
spray gun into container.
3. Attach a short section (3-5 ft.) of garden hose to
machine to siphon solution from an elevated con-
tainer or add mixture to the float tank.Turn pump
switch on allowing solution to be pumped through
coil and back into the container. Solution should
be allowed to circulate 2-4 hours.
4. After circulating solution flush entire system with
fresh water.Reinstall nozzle in spray gun.
GASVALVE REGULATOR
ADJUSTMENT
Adjustment of the built-in regulator isn’t normally nec-
essary, since it is preset at the factory. However, field
adjustment may be accomplished as follows:
1. Attach manometer at pressure tap port.
2. Remove regulator adjustment screw cap.
3. With a small screwdriver, rotate the adjustment
screw clockwise to increase or counterclockwise
to decrease gas pressure.
4. Replaceregulatoradjustmentscrewcap (see Fig-
ure 5 below).
Figure 5
Pressure Relief Valve
Each machine is equipped with a relief valve to relieve
pressureinthesystem when higher than normaloper-
atingpressuresareencountered.If operatingpressure
of machine is found to be normal and relief valve con-
tinues to leak, repair or replace the valve. CAUTION:
Relief valve can become obstructed by deposits and
must be unscrewed at least once per year to allow dis-
charge.
PROPANE GAS
General Safety Precautions
Have a qualified gas service person assist in any gas
burnerinstallationor service.Fewmaintenancepeople
ormechanicsareknowledgeable in gas controls orre-
latedsafetypractices.Propane gas is heavierthanair;
unburned propane gas will gravitate to the floor rather
thanriseout of the stack.Hence,adequate floor space
andgoodventilationare especially important with pro-
pane systems.
Gas Pressure Requirements
All propane fired machines operate on vapor propane
fuel only. They are designed to operate at a pressure
of
11 w.c.i.(between 1/3 and 1/2 of one psi), and are of-
tenoperatedat even higher pressures whenextra heat
is needed.
Gas Valve Regulator Adjustment
On/Off
Switch
Outlet View
Inlet
Manifold Pressure
Adjustment Screw
Under Cap
Gas Valve
Regulator
Adjustment
LinesTo
Pilot Light

96-610 • LANDA VNG/VLP • REV. 9/05 17
PRESSUREWASHER OPERATOR’S MANUAL
MAINTENANCE & SERVICE
Exterior regulators are needed to control the system.
Propane bottles are not included with the machine. A
highpressure regulator should be installed on the pro-
pane bottle and a low pressure regulator attached to
the pressure washer.
Propane Cylinder Capacity
An important consideration with propane systems is
thecapacityof the supply cylinder relativeto the needs
of the burner. The burner operates on propane as a
vapor gas. As gas is used from the propane cylinder,
the liquid in the cylinder boils to maintain vapor gas
pressure.Thisboiling process cools the liquid, and in a
heavy,continuous-demandsituation,theliquid tempera-
ture can fall to the point at which it cannot provide va-
por gas as rapidly as is needed.In this case, it may be
necessary towarm the propane cylinder by directing a
warm spray, not over 120°F, on the cold cylinder or by
manifolding two propane bottles together to increase
total vaporization capacity. It is recommended that a
minimum 100 lb.vapor propane bottle be used on the
machine, depending on the length of running time de-
sired.
BURNER FEATURES
Operated Automatic Valve
This machine is equipped with an Intermittent Pilot Ig-
nitionSystem.Thissystemisdesignedtoeliminatethe
needfora constant burning pilot.Lighting of the pilot is
accomplished through electronic spark ignition each
time the burner and flow switch call for heat.The pilot
is not burning when there is no call for heat. Do not
attempttolighttheappliancemanually as a burn injury
or electrical shock may result. The pilot light will re-
main on and the main gas valve is turned off when the
spray gun is closed.
Care of Main Burner
Due to condensation from heater coils dripping down
on the burners, scale build-up may occur in the burner
jet orifices.
1. TO REMOVE BURNER MANIFOLD FROM WA-
TER HEATER COIL:
Turn off the gas to the main burner by turning the
knob to the “OFF” position on the gas valve and
the main gas supply.
Disconnectthepilotandignitionlinesfromthegas
valve.Disconnect union in main burner line below
thermostat.Slide burnermanifoldoutthroughshell
opening.
2. TO CLEAN BURNER JETS:
Select proper size drill for type gas involved. Use
pin vise to hold drill and ream out each jet orifice.
CAUTION: Donot reamoutorificestoalarger size.
Ifthewaterheater will be exposedtofreezingweather,
ananti-freezesolution should becirculatedthrough the
coil by whatever means are available for the particular
system the water heater is used on.
To Adjust Pressure Regulator
Adjustment of the pressure regulator is not normally
necessary since it is preset at the factory. However,
field adjustment may be accomplished as follows:
1. Manometer attachment may be accomplished at
the pressure tap plug.
2. Removeregulatoradjustmentscrewcap (see Fig-
ure 5, page 14).
3. With small screwdriver, rotate adjustment screw
clockwise to increase, or counterclockwise to de-
crease pressure.
4. Replace regulator adjustment screw cap.

96-610 • LANDA VNG/VLP • REV. 9/05
OPERATOR’S MANUAL PRESSURE WASHER
18
PREVENTATIVE MAINTENANCE
Thispressurewasherwas produced with the best availablematerialsand quality craftsmanship.However, you as
the owner have certain responsibilities for the correct care of the equipment. Attention to regular preventative
maintenanceprocedureswillassist in preservingtheperformance of yourequipment.Contact yourLanda dealer
for maintenance. Regular preventative maintenance will add many hours to the life of your pressure washer.
Perform maintenance more often under severe conditions.
MAINTENANCE SCHEDULE
Pump Oil Inspect Oil level daily
Change After first 50 hours, then every 500 hours or annually
Check and Tighten Belts Every 3 months
Remove Burner Soot Annually
Burner Adjustment/Cleaning Annually
Clean Burner Nozzles Annually
Descale Coil Annually (More often if required)
Replace High Pressure Nozzle Every 6 months
Replace Quick Couplers Annually
Clean Water Screen/Filter Weekly
Replace HP Hose Annually (If there are any signs of wear)
Grease Motor Every 10,000 hours
Date Oil Changed
Month/Day/Year
Estimated Operating
Hours Since Last
Oil Change
OIL CHANGE RECORD

96-610 • LANDA VNG/VLP • REV. 9/05 19
PRESSURE WASHER Troubleshooting Guide
TROUBLESHOOTING - BURNER
PROBLEM POSSIBLE CAUSE SOLUTION
FLOW & BURNER
SWITCH ON; NO
SPARK, NO PILOT GAS
A. No main power With power switch on, open trigger on spray
gun and set your test meter to the 24 volt
scale. Probe terminals 24V and 24V(GND). If
you do not read 24 volts, the problem is not
the ignition system. Perform normal system
checks of main power, transformer, thermostat
and the limit control. If you do read 24 volts at
TH and GND, the problem is in the ignition
system. Check for loose or defective wiring. If
wiring is good, replace the ignition control unit.
B. Faulty transformer
C. Faulty burner & flow switch
D. Faulty ignition control unit
HAVE SPARK, NO
PILOT GAS FLOW Main gas supply turned off Set test meter to 24 volt scale.
1. Be sure main gas valve (gas cock or
selector arm) is turned on.
2. With gas on and system sparking, probe
terminals PV and 24V(GND). If pilot gas does
not flow with 24 volts at these terminals,
replace gas valve.
3. Probe terminals PV and MV/PV. If 24 volts
not present, replace ignition control box.
HAVE PILOT GAS,
NO SPARK A. Defective ignitor/sensor and or its
wiring Set test meter to ohm scale.
1. Disconnect the wire from the IGN terminal
on the ignition control unit.
B. Faulty ignition control unit 2. Touch one meter probe to the tip of the
ignitor/sensor rod in the pilot. Touch the other
probe to the quick connect at the other end of
ignitor/sensor wire.
3. If you have continuity from the tip of the
ignitor/sensor rod to the connector and no
spark, replace the ignition control unit.
4. If you do not have continuity through wire
and the ignitor/sensor, check for a loose wire
connection in the wire. Repair as needed.
5. Check to see if spark shorts to burner ring
through a cut in the ignitor wire.

96-610 • LANDA VNG/VLP • REV. 9/05
PRESSURE WASHER Troubleshooting Guide
20
TROUBLESHOOTING - BURNER
PROBLEM POSSIBLE CAUSE SOLUTION
HAVE PILOT FLAME,
MAIN BURNER WILL
NOT TURN ON
Faulty main valve coil in the gas
valve Set test meter to 24 volt scale.
Faulty ignitor/sensor and/or its
wiring With pilot flame on ignitor/sensor, probe terminals MV and MV/PV on the ignition control unit. If you
read 24 volts here, but not at the gas valve, there
is a loose wiring connection. Repair or replace a
as needed.
Ground wire not attached to
machine chassis If you do read 24 volts at MV and MV/PV and the pilot flame is impinging on the ignitor/sensor rod, the
problems may be:
Faulty ignition control unit a. Faulty ignitor/sensor and/or its wiring.
b. Faulty ignition control unit.
Set test meter to the ohm scale. Turn burner switch off.
Check continuity through the green ground wire and
its connections.
Reconnect the ignitor/sensor wire and the ground wire.
Turn burner switch on. With the pilot burning and the
flame on the ignitor/sensor rod, the main burner
should turn on. If it does not, replace the ignition
control unit.
SHORT-CYCLING OF
MAIN BURNER. MAIN
BURNER TURNS
OFF BEFORE THE
BURNER SWITCH OR
FLOW SWITCH IS
TURNED OFF
Draft condition pulls flame away
from ignitor/sensor rod. Check the thermostat by bypassing at terminals P1 & 1.
Set thermostat high. With main burner on, observe
the pilot flame impingement on the ignitor/sensor.
Faulty thermostat or water
temperature is too high If pilot flame is small and draft condition pulls flame from ignitor sensor rod, the burner will turn off and
then on again.
a. Adjust pilot flame higher or clean pilot oriface.
b. Bend ignitor/sensor rod closer to pilot flame.
If flame impingement on the ignitor/sensor is stable
and the system short-cycles, check the limit switch.
Set test meter to 110 volt scale
a. When the system cycles off, probe the switch
terminals of the limit switch.
b. If you read 24V accross the switch terminals the
limit switch is open. Replace the limit switch.
A pilot flame set too high will also cause burner to
short cycle. Pilot flame lifts over ignitor/sensor.