Landa HS Series User manual

8.913-943.0-P 12/13/19
HS Series
Hot Water Generator
Operator’s Manual Heater Module
12
MODELS: HS-3000
1.103-900.0

2Landa HS Operator’s Manual 8.913-943.0 - P
Machine Data Label

3
Table of Contents
Machine Data Label . . . . . . . . . . . . . . . . . . . . . . . . . .2
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . .3
How To Use This Manual . . . . . . . . . . . . . . . . . . . . .4
Safety
Introduction & Safety Information . . . . . . . . . . . . . . .5
Important Safety Information. . . . . . . . . . . . . . . . . . . 5
Operations
Component Identification . . . . . . . . . . . . . . . . . . . . .8
Assembly Instructions . . . . . . . . . . . . . . . . . . . . . . . .9
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Operating Instructions. . . . . . . . . . . . . . . . . . . . . . . 11
Detergent And General Cleaning Techniques . . . .12
Cleaning Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Rinsing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Shutting Down And Clean-up . . . . . . . . . . . . . . . . . 13
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
After Extended Storage. . . . . . . . . . . . . . . . . . . . . . 13
Maintenance
Preventative Maintenance . . . . . . . . . . . . . . . . . . . 14
Winterizing Procedure. . . . . . . . . . . . . . . . . . . . . . . 14
High Limit Thermostat. . . . . . . . . . . . . . . . . . . . . . . 14
Cleaning of Coils. . . . . . . . . . . . . . . . . . . . . . . . . . .14
Removal of Soot and Heating Coil . . . . . . . . . . . . .15
Rupture Disk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Ignition Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Electrode Setting. . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Burner Nozzle . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Fuel Control System . . . . . . . . . . . . . . . . . . . . . . . .16
Fuel Pressure Adjustment. . . . . . . . . . . . . . . . . . . . 16
Air Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Coil Removal HS-3000 . . . . . . . . . . . . . . . . . . . . . .17
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Preventative Maintenance . . . . . . . . . . . . . . . . . . . 20
Maintenance Schedule . . . . . . . . . . . . . . . . . . . . . . 20
Oil Change Record . . . . . . . . . . . . . . . . . . . . . . . . . 21
Landa HS Operator’s Manual 8.913-943.0 - P

4
How To Use This Manual
This manual contains the following sections:
• How to Use This Manual
•Safety
• Operations
• Maintenance
• Parts List
The HOW TO USE THIS MANUAL section will tell you
how to find important information for ordering correct
repair parts.
Parts may be ordered from authorized dealers. When
placing an order for parts, the machine model and
machine serial number are important. Refer to the
MACHINE DATA box which is filled out during the
installation of your machine. The MACHINE DATA box
is located on the inside of the front cover of this manual.
The model and serial number will be found on a decal
attached to the machine.
The SAFETY section contains important information
regarding hazardous or unsafe practices of the
machine. Levels of hazards are identified that could
result in product damage, personal injury, or severe
injury resulting in death.
The OPERATIONS section is to familiarize the operator
with the operation and function of the machine.
The MAINTENANCE section contains preventive main-
tenance to keep the machine and its components in
good working condition. They are listed in this general
order:
• Winterizing Procedure
• High Limit Thermostat
• Cleaning of Coils
• Rupture Disk
•Fuel
• Ignition Circuit
• Electrode Setting
• Burner Nozzle
• Fuel Control System
• Air Adjustment
• Coil Removal HS-3000
• Maintenance
• Preventative Maintenance
The PARTS LIST section contains assembled parts
illustrations and corresponding parts list. The parts lists
include a number of columns of information:
•REF – column refers to the reference number
on the parts illustration.
•PART NO. – column lists the part number for
the part.
•QTY – column lists the quantity of the part used
in that area of the machine.
•DESCRIPTION – column is a brief description
of the part.
•NOTES – column for information not noted by
the other columns.
NOTE: If a service or option kit is installed on your
machine, be sure to keep the KIT INSTRUCTIONS
which came with the kit. It contains replacement parts
numbers needed for ordering future parts.
NOTE: The manual part number is located on the
lower right corner of the front cover.
Model:
Date of Purchase:
Serial Number:
Dealer:
Address:
Phone Number:
Sales Representative:
Landa HS Operator’s Manual 8.913-943.0 - P

5
Safety
Introduction & Safety Information
Thank you for purchasing a Landa Heater Module.
This manual covers the operation and maintenance of
the HS-3000 heater module. All information in this
manual is based on the latest product 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:
The owner and/or user must have an understanding of
the manufacturer’s operating instructions and warnings
before using this Landa Heater Module. Warning infor-
mation should be emphasized and understood. If the
operator is not fluent in English, the manufacturer’s
instructions and warnings shall be read to and
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.
SAVE THESE 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. use only identical replacement
parts.
This machine is to be used only by trained opera-
tors.
Important Safety Information
NOTE: This heater module HS-3000 is designed
for connection to a pressure washer (not
included). Read and follow WARNING and
operating instructions of pressure washer
connected to model HS-3000.
CAUTION: To reduce the risk of
injury, read operating instructions
carefully before using.
ATTENTION: Pour réduire le
risque de blessures, lire attentive-
ment les instructions de
fonctionnement avant l'utilisation.
1. Read the owner's manual thoroughly. Failure to
follow instructions could cause malfunction of the
machine and result in death, serious bodily injury
and/or property damage.
2. Know how to stop this product and bleed pressures
quickly. Be thoroughly familiar with the controls.
3. Stay alert - watch what you are doing.
4. All installations must comply with local codes.
Contact your electrician, plumber, utility company
or the selling dealer for specific details.
To comply with the National Electric Code (NFPA
70) and provide additional protection from risk of
shock, this product is provided with a ground fault
circuit interrupter (GFCI) built into the power cord
plug (250V 30 amp or less, 1 PH). If replacement of
the plug or cord is needed, use only identical
replacement parts.
WARNING: Must be plugged into properly wired
three hole grounded outlet that accommodates
plug on power cord. Failure to comply could result
in electrical shock.
AVERTISSEMENT: Doit être raccordé dans une
sortie à trois trous mise à la masse et correctement
câblée qui peut accueillir une fiche sur un cordon
d'alimentation. Le non-respect de cette consigne
pourrait causer un choc électrique.
DANGER: Improper connection of the equipment-
grounding conductor can result in a risk of electro-
cution. Check with a qualified electrician or service
personnel if you are in doubt as to whether the
outlet is properly grounded. Do not modify the plug
provided with the product - if it will not fit the outlet,
have a proper outlet installed by a qualified electri-
cian.
DANGER: Une mauvaise connexion du conducteur
de terre de l'équipement peut entraîner un risque
d'électrocution. Vérifier auprès d'un électricien
qualifié ou du personnel d'entretien si vous avez
des doutes quant à savoir si lasortie est correcte-
ment mise à la masse. NE PAS modifier la fiche
fournie avec le produit - si elle n'entre pas dans la
sortie, faire installer une sortie appropriée par un
électricien qualifié.
Landa HS Operator’s Manual 8.913-943.0 - P
WARNING
READ SAFETY
INSTRUCTIONS PRIOR
TO INSTALLING OR
SERVICING MACHINE
OPERATIONS
SAFETY
MAINTENANCE

6
Safety
WARNING: Do not operate machine
in areas where flammable vapors
(gasoline, solvents, etc.) may be
present, as this machine may ignite
the vapors.
AVERTISSEMENT: Ne pas utiliser
la machine dans des endroits où
des vapeurs inflammables
(essence, solvants, etc.) pourraient
être présentes, car cette machine
pourrait enflammer les vapeurs.
WARNING: Do not use gasoline, crankcase drainings
or oil containing gasoline, solvents or alcohol. Doing
so will result in fire and/or explosion.
AVERTISSEMENT: Ne pas utiliser d'essence, de
drainage du carter de moteur ou d'essence
contenant de l'huile, de solvants ou de l'alcool. Agir
de la sorte risquerait de créer un incendie et/ou une
explosion.
WARNING: Risk of explosion - Do
not spray flammable liquids.
Operate only where an open torch
is permitted.
AVERTISSEMENT: Risque
d'explosion - Ne pas pulvériser de
liquides inflammables. Utiliser
uniquement dans des endroits où
l'utilisation d'une flamme nue ou
d'une torche est permise.
5. This oil burning machine shall be installed only in
locations where combustible dusts and flammable
gases or vapors are not present.
6. In these oil burning models, use only kerosene, No.
1 home heating fuel, or diesel.
WARNING: Keep wand, hose, and
water spray away from electric
wiring or fatal electric shock may
occur. Read warning tag on elec-
trical cord.
AVERTISSEMENT: Garder la lance,
le boyau et le jet d'eau à l'écart de
tout câblage électrique ou des
chocs électriques mortels
pourraient survenir. Lire l'étiquette
d'avertissement sur le cordon électrique
7. To protect the operator from electrical shock, the
machine
must be electrically ground- ed. It is the
responsibility of the owner to connect this machine
to a UL grounded receptacle of proper voltage and
amperage ratings. Do not spray water on or near
electrical components. Do not touch machine with
wet hands or while standing in water. Always discon-
nect power before servicing.
WARNING: Spray gun kicks back
— hold with both hands.
AVERTISSEMENT: Le pistolet
pulvérisateur peut présenter un
risque de retour; le tenir avec les
deux mains.
8. Grip cleaning wand securely with
both hands before starting.
Failure to do this could result in
injury from a whipping wand.
WARNING: Risk of injection or
severe injury - Keep clear of nozzle -
Do not touch or direct discharge
stream at persons or animals or
severe injury or death will result.
This machine is to be used only by
trained operators.
AVERTISSEMENT: Risque
d'injection ou de blessures graves -
Se tenir à l'écart de la buse. Ne pas
toucher ou décharger directement le jet vers des
personnes ou des animaux, car cela risquerait de
causer des blessures graves ou même la mort. Ces
machines doit être utilisé uniquement par des
opérateurs formés.
CAUTION: Hot discharge fluid. Do
not touch or direct discharge
stream at persons or animals.
ATTENTION: Liquide de décharge
chaud. Ne pas toucher ou
décharger directement le jet vers
des personnes ou des animaux,
9. High pressure developed by the
attached pressure washer can
cause bodily injury or damage. Use caution when
operating. Do not point the spray gun at anyone or
at any part of the body.
10. Never make adjustments on machine while it is in
operation.
WARNING: High pressure spray
can cause paint chips or other
particles to become airborne and
fly at high speeds. To avoid
personal injury, eye, hand and foot
safety devices must be worn.
AVERTISSEMENT: Un jet haute
pression peut écailler la peinture
ou provoquer l'émission d'autres
particules dans l'air et leur projec-
tion à hautes vitesses. Pour éviter les lésions corpo-
Landa HS Operator’s Manual 8.913-943.0 - P
WARNING
RISK OF FIRE.
DO NOT USE WITH
FLAMMABLE LIQUIDS
KEEP WATER
SPRAY AWAY FROM
ELECTRICAL WIRING.
WARNING
WARNING
TRIGGER GUN KICKS
BACK — HOLD WITH
BOTH HANDS
WARNING
HIGH PRESSURE
STREAM CAN PIERCE
SKIN AND TISSUES.
WARNING
RISK OF EXPLOSION:
DO NOT SPRAY
FLAMMABLE
LIQUIDS.
CAUTION
HOT DISCHARGE FLUID:
DO NOT TOUCH OR
DIRECT DISCHARGE
STEAM AT PERSONS
OR ANIMALS.
WARNING
PROTECTIVE
EYE WEAR AND
CLOTHING
MUST BE WORN.

7
Safety
relles, une protection des yeux, du visage, des mains
et des pieds doit être portée lors de l'utilisation de
cet équipement.
11. Always wear properly eye protection such as safety
goggles or face shield while spraying.
(Safety glasses do not provide full protection.)
DANGER: Risk of asphyxiation.
Use this product only in a well
ventilated area.
DANGER: Risque d'asphyxie. Ne
pas inhaler les vapeurs.
12. When the machine is working, do
not cover or place in a closed
space where ventilation is
insufficient.
WARNING: Risk of fire. Do not add
fuel when the machine is operating
or still hot.
AVERTISSEMENT: Risque
d'incendie - Ne pas changer les
réservoirs pendant que le produit
est en marche ou encore chaud.
13. Check to make sure burner shuts
off when spray gun trigger is
closed.
WARNING: Protect from freezing.
AVERTISSEMENT: Protéger la
machine contre le gel.
14. To prevent a serious injury, make
certain quick coupler on
discharge hose has locked
before using pressure washer.
15. Do not allow acids, caustic or
abrasive fluids to pass through
the this machine.
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 product is used near children. Do
not allow children to operate the pressure washer.
This machine must be attended during opera-
tion.
18. The best insurance against an accident is precau-
tion, and knowledge of the machine.
19. Do not operate this product when fatigued or under
the influence of alcohol or drugs. Keep operating
area clear of all persons.
20. Landa will not be liable for any changes made to our
standard machines, or any components not
purchased from Landa.
WARNING: Be extremely careful
when using a ladder, scaffolding or
any other relatively unstable
location. The cleaning area should
have adequate slopes and
drainage to reduce the possibility
of a fall due to slippery surfaces.
AVERTISSEMENT: Faire preuve
d'une extrême prudence au
moment d'utiliser une échelle, des
échafaudages ou toute autre surface relativement
instable. La zone de nettoyage doit avoir une pente
et un drainage adéquats pour réduire la possibilité
d'une chute due à une surface glissante.
21. Do not overreach or stand on unstable support.
Keep good footing and balance at all times.
22. Follow the maintenance instructions specified in the
manual.
23. When making repairs disconnect from electrical
source.
24. Turn burner off and open spray gun to allow water to
flow and cool coil to 100° before turning
machine off.
25. Before disconnecting high pressure hose from
HS-3000 water outlet, open spray gun to relieve
back pressure in hose.
WARNING: Appropriate ear protec-
tion must be worn if attached
pressure washer exceeds 85 db.
AVERTISSEMENT: Cette machine
excède 85 dB et une protection de
l'ouïe appropriée doit être portée.
CAUTION: This machine produces
hot water and must have insulated
spray gun, wand and other
discharge components attached to
protect the operator.
AVERTISSEMENT:Cette machine produit de l'eau
chaude et doit comporter des composants isolés
attachés pour protéger l'opérateur
WARNING: Do not spray machine
or any people, animals or electrical
parts.
AVERTISSEMENT: Ne pas
vaporiser sur la machine ou les
gens, les animaux ou les pièces
électriques.
Landa HS Operator’s Manual 8.913-943.0 - P
WARNING
RISK OF INJURY
FROM FALLS WHEN
USING LADDER.
WARNING
EAR PROTECTION
MUST BE WORN
WARNING
DO NOT SPRAY
MACHINE OR ANY
PEOPLE, ANIMALS OR
ELECTRICAL PARTS.
DANGER
RISK OF
ASPHYXIATION.
USE THIS PRODUCT
ONLY IN A WELL
VENTILATED AREA.
WARNING
RISK OF FIRE.
DO NOT ADD FUEL
WHEN OPERATING
MACHINE.
WARNING
PROCTECT FROM
FREEZING

8
Operations
Component Identification
Customer’s
Pressure Washer,
Attached
(Not Included)
Fresh
Water Faucet
Water Supply Hose
(Not Included)
Stackless
Top
Adapter
Kit
30-199
NOTE: The water in this machine is hot. The
wand and spray gun must be insulated
Hose, spray gun & wand and attached pressure
washer not included on the HS-3000
Spray Gun
HS Burner
Switch
15 Amp
GFCI
Collar
Insulated Handle
High
Pressure
Hose
9 ft.
Connecting
Hose
Discharge Nipple
Inlet
Connector
Quick Coupler
Included)
(Not
(Not Included)
(Not Included)
(Not Included)
Landa HS Operator’s Manual 8.913-943.0 - P

9
Operations
Assembly Instructions
STEP 1: Location of machine is
important. Avoid installing near
combustible material or in poorly
ventilated areas.
Connect the power cord into the
proper electrical outlet, then push
in the GFCI reset button. (Refer to
serial plate for information.)
STEP 4: Pull the spring-loaded
collar of the wand coupler collar
back to insert your choice of
pressure nozzle.
CAUTION: Never replace nozzles
without engaging the safety
latch on the spray gun trigger.
ATTENTION: Ne jamais
remplacer les buses sans
d'abord mettre le dispositif de
sécurité sur la détente du
pistolet pulvérisateur.
STEP 2: Connect high pressure
hose from the attached pressure
washer (not included) to the hot
water discharge nipple by sliding
quick coupler collar back. Insert
quick coupler onto discharge nipple
and secure by pushing quick
coupler collar forward.
(See Component Identification)
STEP 5: Release the coupler collar
and push the nozzle until the collar
clicks. Pull the nozzle to make sure
it is seated properly.
STEP 3: Attach variable pressure
control wand to spray gun using
teflon tape on threads to prevent
leakage. Position safety latch to
prevent trigger from being pulled.
Landa HS Operator’s Manual 8.913-943.0 - P
Trigger
Gun
High Pressure
Hose
Safety
Latch
Trigger
W
and
High
Pressure
Nozzle
Wand
Coupler
Collar
Wand
Collar
Pressure
Nozzle

10
Operations
Installation
Place machine in a convenient location providing
ample support, draining and room for maintenance.
Location
The location should protect the machine from
damaging environmental conditions, such as; wind,
rain, and freezing.
Machine must be stored indoors when not in use.
1. The machine should be run on a level surface
where it is not readily influenced by outside
sources such as strong winds, freezing tempera-
tures, rain, etc. The machine should be located to
allow accessibility for refilling of fuel, adjustments
and maintenance. Normal precautions should be
taken by the operator of the machine to prevent
excess moisture from reaching the power unit or
electrical controls.
2. It is recommended that a partition be made
between the wash area and the machine to
prevent direct water spray from coming in contact
with the machine. Excess moisture reaching any
electric components or electrical controls will
reduce machine life and may cause electrical
shorts.
3. During installation of the machine, beware of
poorly ventilated locations or areas where exhaust
fans may cause an insufficient supply of oxygen.
Sufficient combustion can only be obtained when
there is a sufficient supply of oxygen available for
the amount of fuel being burned.
Electrical
This machine, when installed, must be electrically
grounded in accordance to local codes. Check
for proper power supply using a volt meter.
Placement
Do not locate near any combustible material.
Keep all flammable material at least 20 feet away.
Allow enough space for servicing the machine.
Local code will require certain distances from floor and
walls. (Two feet away should be adequate.)
Water Source
The water source for the machine should be supplied
by a 5/8" I.D. garden hose with a city water pressure of
not less than 30 psi. If the water supply is
inadequate, or if the garden hose is kinked, the
attached pressure washer will run very rough and the
burner will not fire.
Connection
Connect the wand, nozzle, hose and spray gun (where
applicable). On pipe thread connections, use teflon
tape to avoid water leaks.
(See Component Identification)
Venting
Adding exhaust vent pipe to your oil fired burner is not
recommended. It restricts air flow, causing carbon
build-up, which affects the operation, and increases
maintenance on the coil. If a stack must be used,
refrain from using 90° bends. If the pipe can not go
straight up then use only 45° bends and go to the next
size pipe. The overall pipe length must not exceed 6
feet in length. Adjust burner air settings after stack is
installed
Landa HS Operator’s Manual 8.913-943.0 - P

11
Operations
Operating Instructions
STEP 1: Connect the high pressure
hose quick coupler from attached
pressure washer to discharge
nipple by sliding the quick coupler
collar back and inserting quick
coupler on coupler nipple and
pushing the quick coupler collar
forward to secure it.
STEP 2: Grip spray gun and wand
handle securely.
Start attached pressure washer
according to the manufacturers
instructions. When a steady stream
of water flows from the spray gun
and wand the machine is ready for
cold water cleaning.
STEP 3: For hot water washing,
turn the HS burner switch to the ON
position. (The burner will light auto-
matically.)
Landa HS Operator’s Manual 8.913-943.0 - P
Burner
Switch
Variable Pressure
Control Handle Trigger
Variable Pressure
Wand (VP)
High
Pressure
Nozzle
Brass Soap
Nozzle
* Not Included
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 oper-
ator's manual of attached pressure washer.
NOTE: High pressure hose, nozzles, gun and wand are
included with attached pressure washer and not part of
model HS-3000.
IMPORTANT NOTICE: Read operating instructions of
connected pressure washer.

12
Operations
Detergent And General Cleaning
Techniques
WARNING: Some detergents
may be harmful if inhaled or
ingested, causing severe
nausea, fainting or poisoning.
The harmful elements may
cause property damage or
severe injury.
AVERTISSEMENT: Certains
détergents peuvent être
dangereux s'ils sont inhalés ou
ingérés, provoquant de fortes
nausées, des évanouissements et l'empoisonnement.
Les éléments dangereux peuvent causer des
dommages à la propriété ou des blessures graves.
STEP 1: Connect detergent injector to discharge nipple on
machine.
Connect high pressure hose to injector with quick coupler.
(Check to make sure locking coupler sleeves are in proper
position before applying water pressure).
STEP 2: Use detergent designed
specifically for pressure washers.
Household detergents could
damage the pump. Prepare
detergent solution as required by
the manufacturer. Fill a container
with pressure washer detergent.
Place the filter end of detergent
suction tube into the detergent
container.
STEP 3: With safety latch on
spray gun engaged, secure black
detergent nozzle into quick
coupler.
NOTE: Detergent cannot be
applied using red, yellow, green
or white nozzles.
STEP 4: With the engine running, pull trigger to operate
machine. Liquid detergent is drawn into the machine and
mixed with water. Apply detergent to work area. Do not
allow detergent to dry on surface.
IMPORTANT: You must flush the detergent injection
system after each use by placing the suction tube into
a bucket of clean water, then run the pressure washer
in low pressure for 1-2 minutes.
IMPORTANT: The instructions on this page pertain to
the pressure washer used in connection with model
HS-3000.
Cleaning Tips
Pre-rinse cleaning surface with fresh water. Place
detergent suction tube directly into cleaning solution and
apply to surface at low pressure (for best results, limit your
work area to sections approximately 6 feet square and
always apply detergent from bottom to top). Allow
detergent to remain on surface 1-3 minutes. Do not allow
detergent to dry on surface. If surface appears 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 from
cleaning surface. Use overlapping strokes as you clean
and rinse any surface. For best surface cleaning action
spray at a slight angle.
Recommendations:
• Before cleaning any surface, an inconspicuous
area should be cleaned to test spray pattern and
distance for maximum cleaning results.
• If painted surfaces are peeling or chipping, use
extreme caution as pressure washer may remove
the loose paint from the surface.
• Keep the spray nozzle a safe distance from the
surface you plan to clean. High pressure wash a
small area, then check the surface for damage. If
no damage is found, continue to pressure
washing.
CAUTION - Never use:
• Bleach, chlorine and other corrosive chemicals
• Liquids containing solvents (i.e., paint thinners,
gasoline, oils)
• Tri-sodium phosphate products
• Ammonia products or acid-based products
ATTENTION: Ne jamais utiliser:
• Eau de Javel, produits à base de chlore et autres
produits chimiques corrosifs
• Liquides contenant des solvants (c.-à-d. diluant à
peinture, essence, huiles, etc.)
• Produits à base de tripolyphosphate de sodium
• Ammoniac ou produits à base d'acide
These chemicals will harm the machine and will
damage the surface being cleaned.
WARNING
Detergent
Injector
Discharge
Nipple
High Pressure
Hose
Landa HS Operator’s Manual 8.913-943.0 - P

13
Operations
Rinsing
It will take a few seconds for the
detergent to clear. Apply safety
latch to spray gun. Remove black
soap nozzle from the quick coupler.
Select and install the desired high
pressure nozzle. NOTE: You can
also stop detergent from flowing by
simply removing detergent siphon
tube from bo
Shutting Down And Clean-
up
STEP 1: Remove detergent suction
tube from container and insert into
one (1) gallon of fresh water. Pull
trigger on spray gun and siphon
water for one minute.
STEP 2: Turn HS burner switch off
and continue spraying water,
allowing the water to cool.
After water has cooled to less than
100°, turn the attached pressure
washer off.
STEP 3: Turn water off.
STEP 4: Open the spray gun to
relieve remaining pressure.
Landa HS Operator’s Manual 8.913-943.0 - P
Burner
Switch
Storage
CAUTION: Always store your pressure washer in a
location where the temperature will not fall below
32°F (0°C). The heating coil in this machine is
susceptible to permanent damage if frozen.
FREEZE DAMAGE IS NOT COVERED BY
WARRANTY.
ATTENTION: Toujours entreposer la laveuse à
pression dans un endroit où la température ne sera
pas inférieure à 0 °C (32 °F). La pompe sur cette
machine est susceptible de subir des dommages si
elle est exposée au gel. LES DOMMAGES DUS AU
GEL NE SONT PAS COUVERTS PAR LA
GARANTIE.
1. Stop the pressure washer, squeeze spray gun
trigger to release pressure.
2. Use compressed air at the inlet hose to blow water
out discharge nipple.
3. Store the machine and accessories in a room
which does not reach freezing temperatures.
CAUTION: Failure to follow the above
directions will result in damage to your
pressure washer.
ATTENTION: Le non-respect des direc-
tives ci-dessus entraînera des
dommages à la laveuse à pression.
After Extended Storage
CAUTION: Prior to restarting, thaw out any
possible ice from pressure washer hoses, spray
gun or wand.
ATTENTION: Avant de redémarrer, faire fondre la
glace se trouvant sur les boyaux, le pistolet
pulvérisateur ou la lance de la laveuse à pression.

14
Maintenance
Preventative Maintenance
1. Use clean fuel - kerosene, No. 1 home heating fuel
or diesel. Clean or replace fuel filter every 100
hours of operation. Avoid water contaminated fuel
as it will seize up the fuel pump. De-soot coils
monthly. Use an additive if diesel is being used.
2. Check to see that the attached pressure washer
water pump is properly lubricated.
3. Follow winterizing instructions to prevent freeze
damage to pump and coils.
4. Always neutralize and flush detergent from system
after use.
5. If water is known to be high in mineral content, use
a water softener on your water system, or descale
as needed.
6. Do not allow acidic, caustic or abrasive fluids to be
pumped through system.
7. Always use high grade quality Landa cleaning
products.
8. Never run attached pressure washer pump dry for
extended periods of time.
9. If machine is operated with smoky or eye burning
exhaust, coils will soot up, not letting water reach
maximum operating temperature. (See section on
Air Adjustments).
10. Never allow water to be sprayed on or near the
motor or burner assembly or any electrical compo-
nent.
11. Descale coils as 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 equipment
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.
The flow of combustion and ventilating air to the burner
must not be blocked or obstructed in any manner.
Maintenance And Service
Winterizing Procedure
Damage due to freezing is not covered by warranty.
Adhere to the following cold weather procedures
whenever 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
necessary. Store the machine in a heated room. If this
is not possible use compressed air on the 9 ft. hose
end and, by injecting compressed air, all water will be
blown out of the system.
High Limit Thermostat
For safety, each machine is equipped with a high limit
control switch. In the event the temperature of the water
should exceed its operating temperature the high limit
control will turn the burner off until the water cools.
Cleaning of Coils
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 preven-
tion for liming conditions is to use high quality cleaning
detergents. In areas where alkaline water is an extreme
problem, periodic use of Landa Coil Descaler (part
#8.914-296.0) will remove lime and other deposits
before coil becomes plugged.
Periodic descaling of the heating coil is recom-
mended so please consult your local Landa Dealer
for instructions.
Landa HS Operator’s Manual 8.913-943.0 - P

15
Maintenance
Removal of Soot and Heating Coil
In the heating process, fuel residue in the form of soot
deposits may develop between the heating coil pipe
and block air flow which will affect burner combustion.
When soot has been detected on visual observation,
the soot on the coil must be washed off after following
the coil removal steps (See Coil Removal).
Rupture Disk
If pressure from pump or thermal expansion should
exceed safe limits, the rupture disk will burst, allowing
high pressure to be discharged through hose to ground.
When the disk ruptures it will need to be replaced.
Inspect rupture disk annually for any
obstructions.
Fuel
Use clean fuel oil that is not contaminated with water
and debris. Replace fuel filter and drain tank every 100
hours of operation. Use No. 1 or No. 2 Heating Oil
(ASTM D306) only. NEVER use gasoline in your burner
tank. Gasoline is more combustible than fuel oil and
could result in a serious explosion. NEVER use
crankcase or waste oil in your burner. Fuel unit
malfunction could result from contamination.
Ignition Circuit
Periodically inspect wires, spring contact and elec-
trodes for condition, security and proper spacing.
Transformer test: (CAUTION 10,000 VOLTS) use
defect free insulated screwdriver and keep fingers off
blade! Lay blade across one contact: OK if arc will span
1/2" between end of blade and other contact.
Electrode Setting
Periodically Check wiring connections.
If necessary to adjust electrodes, use diagram.
Burner Nozzle
Keep the tip free of surface deposits by wiping it with a
clean, solvent-saturated cloth, being careful not to plug
or enlarge the nozzle. For maximum efficiency, replace
the nozzle each season.
Landa HS Operator’s Manual 8.913-943.0 - P

16
Maintenance
Fuel Control System
The HS-3000 utilizes a fuel solenoid valve located on
the fuel pump to control the flow of fuel to the combus-
tion chamber. This solenoid, which is normally closed,
is activated by a flow switch when water is flowing
through it. When an operator releases the trigger on the
spray gun, the flow of water through the flow switch
stops, turning off the current to the fuel solenoid. The
solenoid then closes, shutting off the supply of fuel to
the combustion chamber. Controlling the flow of fuel in
this way gives an instantaneous burn or no burn situa-
tion, thereby eliminating high and low water tempera-
tures, and combustion smoke normally associated with
machines incorporating a spray gun. Periodic inspec-
tion is recommended to insure that the fuel solenoid
valve functions properly. This can be done by
operating the machine and checking to see that when
the trigger on the spray gun is in the off position, the
burner is not firing.
Fuel Pressure Adjustment
To adjust fuel pressure, first install a pressure gage into
the port just after the pump fuel exit. Turn the adjusting
screw (located at the regulator port) clockwise to
increase, and counterclockwise to decrease. Do not
exceed 200 psi or lower the pressure below 130 PSI,
when checked at the post-pump pressure port.
The fuel pressure may need to be adjusted due to
altitude. For every 500 ft altitude above sea level, the
boiling point of water goes down 1 °F. At high altitude
environments, this boiling point change may require the
heat input to be lowered so the water input does not
turn to steam earlier than at the factory settings and
activate the pressure sensors and pressure relief
equipment when the unit is operated and much higher
altitudes from factory settings or local dealer site
settings. Check with your dealer before making local
site fuel pressure adjustments.
Also, as ambient temperature changes seasonally, the
fuel temperature in the feed tank and air temperature
inlet can impact fuel flow. In more extreme tempera-
tures, this local-site adjustment may also require
different fuel nozzles for fuel inlet temperatures that are
at seasonal extremes (higher or lower) in locations
where the temperature changes are beyond moderate
temperatures of between 40°F and 90°F. Colder
temperatures will make for a thicker flow and less fine a
fuel spray while hotter temperatures will make for a
thinner flow a more fine spray with the same nozzle.
Consider alternate nozzle configurations from the
baseline factory-supplied nozzle for operating in such
temperature extremes if performance is not meeting
needs with air band and fuel pressure settings alone.
NOTE: When changing fuel pump, a by-pass plug
must be installed in return line port or fuel pump will
not prime.
Air Adjustment
The oil burner on this machine is preset for operation at
altitudes near 500 feet. If operated at higher altitudes, it
may be necessary to adjust the air band for a #1 or #2
smoke spot on the Bacharach scale.
To adjust, Loosen locking screw found on the air band.
Start machine and turn burner ON and close air band
until black smoke appears from burner exhaust vent.
Note air band position. Next, slowly open the air band
until white smoke just starts to appear and note air
band position, again. Rotate the air band halfway
between to the previously noted positions. Tighten
locking screws. Typical distance from the 'black smoke'
position is roughly 3/8"-1/2" more open from the point of
visible black smoke, but may vary based upon local
operating conditions.
•For higher altitudes, the air band opening may
need to be increased; for lower altitude, the air
band may need to be decreased.
•For higher humidity, the air band opening may
need to be increased; for lower relative
humidity, the air band may need to be
decreased.
•For higher ambient temperatures the air band
opening may need to be increased; for lower
ambient temperatures, the air band opening
may need to be decreased.
Adjust the burner to your operating location's environ-
ment as-needed for best smoke spot and performance
compliant with local, state, and federal regulations.
Example: a unit preset at a factory at 1700 feet altitude
with an air band of 1.1" and fuel pressure of 190 PSI
with Ambient temperature of 72 °F and a relative
humidity of 84% using #2 Diesel fuel oil. The unit is
shipped to a location at 5300 feet altitude with ambient
air temperature of 59 °F and a relative humidity of 25%.
The air band required adjustment to 1.8" opening and
fuel pressure lowered to 150 PSI for a high altitude
adjustment for both heat input adjustments and
combustion air intake with the same fuel type.
.
Landa HS Operator’s Manual 8.913-943.0 - P

17
Maintenance
To adjust: start machine and turn burner ON. Loosen
two locking screws found on the air band (refer to illus-
tration) and close openings until black smoke appears
from burner exhaust vent. Note air band position. Next,
slowly open the air band until white smoke just starts to
appear. Turn air band halfway back to the black smoke
position previously noted. Tighten locking screws.
Coil Removal HS-3000
Removal of the coil, because of freeze breakage,
thermal expansion or to clean soot from it, can be done
quickly and easily.
1. Disconnect hose from inlet side of the coil.
2. Disconnect electrical connection to the
thermostat.
3. Remove rupture disk and associated fittings.
4. Remove the 3-3/8" bolts from each side of coil and
tank assembly (these bolts are used to fasten
handles to chassis).
5. Remove burner assembly from combustion
chamber.
6. Disconnect 1/2" pipe nipples and tee fittings from
inlet and discharge side of coil.
7. Remove top tank wrap exposing insulation and
coil. Bend back insulation tabs in exhaust stack.
Then fold back insulation.
8. Remove bolts from underneath that hold down coil
to bottom wrap.
9. Remove coil.
10. Replace or repair any insulation found to be torn or
broken.
11. Reinstall new or cleaned coil reversing Steps 9
through 1.
NOTE: Before step 6, lift coil and tank assembly onto
some type of exposed support for ease of removing
inlet and discharge fittings.
Landa HS Operator’s Manual 8.913-943.0 - P

18
Maintenance
Troubleshooting
PROBLEM POSSIBLE CAUSE SOLUTION
BURNER WILL
NOT LIGHT
Disconnected or short in electrical
wiring
All wire contacts should be clean and tight. No
breaks in wire.
Burner motor thermal protector
tripped
If tripped, check voltage, connections and exten-
sions for cause. Check fuel pump shaft rotation for
binding, causing motor to over heat.
Flex-coupling slipping on fuel pump
shaft or burner motor shaft Replace if needed.
On-off switch defective Check continuity through burner switch.
Heavy sooting on coil and burner, can
cause interruption of air flow and
shorting of electrodes
Clean as required.
Improper electrode setting Clean and test according to diagram in operators
manual.
Fuel not reaching combustion
chamber
Check fuel pump for proper flow. Check solenoid
flow switch on machines with spray gun control for
proper on-off flow switch.
Fuel solenoid malfunction
Check by placing screwdriver inside coil then turn
machine on, open spray gun and check for
magnetic pull.
Clogged burner nozzle Replace.
Water not turned on Turn on water to activate burner flow switch.
Flow switch malfunction Remove, test for continuity and replace as needed.
MACHINE
SMOKES
Improper fuel or water in fuel Drain tank and replace contaminated fuel.
Improper air adjustment Readjust air bands on burner assembly.
Low fuel pressure Adjust fuel pump pressure to specifications.
Air leaks in fuel lines Check fuel lines for leaks or air bubbles.
Tighten or replace as needed.
Plugged or dirty burner nozzle Replace.
Faulty burner nozzle spray pattern Replace nozzle.
Heavy accumulation of soot on coils
and burner assembly
Remove coils and burner assembly. Clean thor-
oughly.
Misaligned electrode Realign electrodes to specifications.
Fuel filter partially clogged Replace as needed.
Obstruction in smoke stack Check for insulation blockage or other foreign
objects.
Soot build up on coils Clean coils with soot remover.
Lime build up in coils Clean inside of coils using Landa’s coil cleaner.
Improper burner nozzle See exploded view parts list.
Landa HS Operator’s Manual 8.913-943.0 - P

19
Maintenance
PROBLEM POSSIBLE CAUSE SOLUTION
LOW WATER
TEMPERATURE
Improper fuel or water in fuel Drain fuel tank and replace with proper fuel.
Low fuel pressure Increase fuel pressure.
Weak fuel pump Check fuel pump temperature. Replace pump if
needed.
Fuel filter partially clogged Replace as needed.
Soot build up on coils Clean coils with soot remover.
Lime build up on coils Clean inside of coils using Landa’s coil cleaner.
Improper burner nozzle See exploded view parts list.
WATER
TEMPERATURE
TOO HOT
Incoming water to machine warm or
hot Lower incoming water temperature.
Fuel Pump pressure too high Lower fuel pressure.
Fuel Pump defective Replace fuel pump.
Detergent line sucking air Tighten all clamps. Check detergent line for holes.
Defective high limit switch Replace.
Incorrect fuel nozzle size See exploded view parts list.
insufficient water supplied Check GPM to machine.
Restricted water flow Check nozzle for obstruction, proper size.
Landa HS Operator’s Manual 8.913-943.0 - P

20
Maintenance
Preventative Maintenance
This pressure washer was produced with the best available materials and quality craftsmanship. However, you as
the owner, have certain responsibilities for the correct care of the equipment. Attention to regular preventative
maintenance procedures will assist in preserving the performance of your equipment. Contact your Landa 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 (Non-foaming)
SAE 10W-40
Inspect Oil level daily
Change After first 50 hours, then every 500 hours or annually
Replace High Pressure Nozzle Every 6 months
Replace Quick Connects Annually
Clean Water Screen/Filter Weekly
Replace HP Hose Annually
Landa HS Operator’s Manual 8.913-943.0 - P