Landa EHW, EHW4-2000C, EHW4-2000F, 1.109-500.0, 1.109-954.0 Operator's Manual

®

EHW Series

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Cold Water

Inlet

Hot Water

Outlet

EHW

4-2000

CA

UTION

Ne

v

er Use

:

• Bleach, chlorine products and other corro

siv

e chemicals

• Liquids containing

solv

ents (i.e

.

paint thinne

r

,gasoline

,oil)

•

T

r

i-sodium phosphate p

roducts

• Ammonia products

• Acid-based produ

cts

These chemicals will har

m

the

unit and will damage the

surf

ace being

cleaned.

U

se

m

anuf

acturer's detergen

ts as recommended in m

anual

H

E
A

T

E

R

O

N

E

X

P

O

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E

D P

U

L

LE

Y

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E

IN

J

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A

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/

A

V

ER

TI

S

SE

MEN

T

W

A

RNING

EHW

4-2000

Hot Water - Electric Powered - Electric Heated

Operator’s Manual

Pressure Washer

MODELS: EHW4-2000C

1.109-500.0

EHW4-2000F

1.109-954.0

EHW4-3000C

1.109-501.0

EHW4-3000F

1.109-955.0

For the Landa Dealer nearest

you, consult our web page at

www.landa.com

8.941-114.0-M 06/06/17

Machine Data Label

2 Landa EHW Operator’s Manual 8.941-114.0 - M

Machine Data Label. . . . . . . . . . . . . . . . . . . . . . . . . .2

Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . .3

How To Use This Manual . . . . . . . . . . . . . . . . . . . . .4

Safety

Introduction & Safety Information . . . . . . . . . . . . . . .5

Important Safety Instructions . . . . . . . . . . . . . . . . . .6

Warning: If connection is made to potable water

supply, a back flow device must be provided.. . . .7

Pre-operation Check. . . . . . . . . . . . . . . . . . . . . . . . .7

Operations

Component Identification . . . . . . . . . . . . . . . . . . . . .8

Assembly Instructions. . . . . . . . . . . . . . . . . . . . . . .10

Shutdown Procedures. . . . . . . . . . . . . . . . . . . . . . .14

Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Pump Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Maintenance

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Preventative Maintenance . . . . . . . . . . . . . . . . . . .19

Table of Contents

Parts

Landa EHW Left . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Landa EHW Right. . . . . . . . . . . . . . . . . . . . . . . . . 23

Electrical Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Cabinet Left. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Cabinet Right . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Hose & Spray Gun . . . . . . . . . . . . . . . . . . . . . . . . 32

Handheld Wireless . . . . . . . . . . . . . . . . . . . . . . . . 34

Handheld Wireless Operating Instructions . . . . . . 36

Downstream Injector. . . . . . . . . . . . . . . . . . . . . . . 38

Pump. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

LT.2 Series Pump . . . . . . . . . . . . . . . . . . . . . . . . . 40

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Landa EHW Operator’s Manual 8.941-114.0 - M

3

How To Use This Manual

Model:

Date of Purchase:

Serial Number:

Dealer:

Address:

Phone Number:

Sales Representative:

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 pressure washer.

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 main­tenance to keep the machine and its components in
good working condition. They are listed in this general
order:

• Storage

• Maintenance

• Troubleshooting

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.

4

Landa EHW Operator’s Manual 8.941-114.0 - M

NOTE: The manual part number is located on the
lower right corner of the front cover.

Introduction & Safety Information

Thank you for purchasing a Landa Pressure Wash er .
This manual covers the operation and maintenance of

the EHW4-20024C, EHW4-30024C, EHW4-20024F
and EHW4-30024F washers. 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 pressure washer. Warning
information 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.

Safety

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 spec if y mo de l and
serial number. Use only identical replacement
parts.

This machine is to be used only by trained
operators.

Landa EHW Operator’s Manual 8.941-114.0 - M

5

Safety

WARNING

READ SAFETY

INSTRUCTIONS PRIOR

TO INSTALLING OR

SERVICING MACHINE

OPERATIONS

SAFETY

MAINTENANCE

DANGER

KEEP WATER
SPRAY AWAY FROM
ELECTRICAL WIRING.

WARNING

RISK OF FIRE. DO NOT

OPERATE NEAR

FLAMMABLE LIQUIDS

WARNING

HIGH PRESSURE
STREAM CAN PIERCE
SKIN AND TISSUES.

WARNING

PROTECTIVE

EYE WEAR AND

CLOTHING

MUST BE WORN.

CAUTION

SPRAY GUN KICKS
BACK — HOLD WITH
BOTH HANDS

Important Safety Instructions

WARNING: When using this
machine basic precautions
should always be followed,
including the following:

WARNING: To reduce the risk of
injury, read operating instructions
carefully before using.

1. Read the owner's manual thor­oughly. Failure to follow inst r uc-

tions could cause malfunction of the machine and
result in death, serious bodily injury and/or property
damage.

2. Know how to stop the machine 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.

5. This machine requires that it be installed by a
qualified electrician. This product shall only be
connected to a power supply receptacle protected
by a ground fault circuit interrupter.

DANGER: Keep wand, hose, and
water spray away from electric
wiring or fatal electric shock may
result.

6. To protect the operator from
electrical shock, the machine
must be electrically grounded. 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
near electrical components. Do not touch machine
with wet hands or while standing in water. Always
disconnect power before servicing.

WARNING: Flammable liquids can
create fumes which can ignite
causing property damage or
severe injury.

WARNING: Risk of fire. Do not
install or operate near any
flammable liquids.

WARNING: Before obtaining
access to electric terminals, all

supply circuits must be disconnected.

8. Electrical appliances shall be installed only in
locations where combustible dusts and flam m abl e
gases or vapors are not present. Do not store or
use gasoline near this machine.

WARNING: High pressure stream
of fluid that this equipment can
produce can pierce skin and its
underlying tissues, leading to
serious injury and possible ampu­tation.

WARNING: Risk of injection or
severe injury. Keep clear of
nozzle. Do not direct discharge

stream at persons or animals.
This equipment is to be used only by trained opera­tors.

9. 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.

10. Always wear properly rated eye
protection such as safety
goggles or face shield while
spraying.

CAUTION: Spray gun kicks back
— hold with both hands.

7. Grip spray-gun and wand
securely before starting this
machine. Failure to do this could
result in bodily injury from a
whipping wand.

6

Landa EHW Operator’s Manual 8.941-114.0 - M

(Safety glasses do not provide full protection)

11. Machines with spray guns should not be operated
with the spray gun in the off position for extended
periods of time as this may cause damage to the
pump.

Safety

WARNING

PROCTECT FROM

FREEZING

WARNING

NOT SUITABLE
FOR CONNECTION
TO THE POTABLE

WATER MAINS.

WARNING

DO NOT SPRAY

MACHINE OR ANY

PEOPLE, ANIMALS OR

ELECTRICAL PARTS.

WARNING: Protect from freezing.

12. Protect discharge hose from
vehicle traffic and sharp objects.

13. To prevent a serious injury, be
certain quick coupler on
discharge hose has locked
before using pressure washer.

14. Before disconnecting discharge
hose from hot water outlet,

disconnect power supply, open spray gun to relieve
back pressure in hose and use protective gloves.

15. Do not allow acids, caustic or abrasive fluids to
pass through the pump.

16. Inlet water supply must be cold and clean fresh
water.

17. The best insurance against an accident is precau­tion and knowledge of the machine.

18. Landa will not be liable for any changes made to
our standard machines, or any components not
purchased from Landa.

19. 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.

20. Do not overreach or stand on unstable support.
Keep good footing and balance at all times.

Warning: If connection is made to
potable water supply, a back flow
device must be provided.

WARNING: Do not spray machine
or any people, animals or elec­trical parts.

Pre-operation Check

• Heat module water level

• Pump oil (SAE 10W-40 non-foaming oil)

• Cold water supply (6 gpm • 5/8" • 20 psi)

• Proper power supply

• Hose, wand, nozzles (nozzle sizes per serial
plate)

• Water filter (intact, non restrictive)

• Read installation and operation instructions

21. Follow the maintenance instructions specified in
the manual.

22. When making repairs disconnect from electrical
source.

23. Do not operate this product when fatigued or under
the influence of alcohol or drugs. Keep operating
area clear of all persons.

24. WARNING: Electric products incorporate parts
that tend to produce sparks and therefore,
when located in a garage, it should be in a
room or enclosure for the purpose, or should
be 18” (45cm) or more above the floor.

Follow the maintenance instructions
specified in the manual.

Landa EHW Operator’s Manual 8.941-114.0 - M

7

Operations

Variable Pressure

Control Wand

Handle

Nozzle Quick

Coupler

Heat Exchanger

Inlet

Connector

Small High Pressure

Hose

Water Fill

Spout

Pressure

Nozzles

Pump Access

Panel

On/Off

Toggle Switch

Detergent

Injector

Discharge

Nipple

Quick Coupler

Collar

Water Supply

Hose

(not included)

Spray

Gun

Trigger

Swivel

Connector

Brass Soap

Nozzle

High Pressure

Hose

Detergent Bucket

(Not included)

Pressure
Relief Valve

Component Identification

T
N
E

M

D

Y

E

N

R

A

SS

S

TI

Y

R

INJU

E

E

VE

LL
U

N/A

NING

P

AUS

C

D

CIO

E

N

AR

A

OS

C

CAU

W

S

E

XP

T

E

L

PR

E
B

P
O

ON

PREN

WER

CO

RRIEN

DE

CO

R

O

U

TE

RAN

T

HE

C

A

A

T

LE

ER

C

N

H

T

A

A

UFFE

D
O

R

-E
A

U

I
OF

AP

F

A
GA

ETTE

R

IN

T

CONT

TIME

RO

L
AD

R — 7

O
R

MI

D

NU

E

TI

T

E

E

R

M

D

I

P

E

AY

O

D

D

E

E

7

S

J

IETE DI
O
UR

S

E
A
S

E
ST

SI

A

S

R

B

L

ED

LE
’
EX

E

CER

S

“ON

TE
D

R

’

EL

O

I
E

”

P

UR

TIEM

T

ER

IMES

P

A

O

T

PO

IO

UR

.

N

D

E

E

’

S

T

E

AB

A

D
L
I

O

R

.

1
0

-07
2
6

E

PULL

X

TR

A
IG

OUT PI

A

TI

LAS
R
E

R

CL

LE

N

AV

S

S

P

T

I
J

O

O

A
I
N

S

SET DE

T

PARA
E
U

LE

R

S
S

V
H

E

O

R

RA

IR

8

Landa EHW Operator’s Manual 8.941-114.0 - M

Operations

Pump — Delivers a specific gpm to the high pressure
nozzle which develops pressure.

Spray Gun — Controls the application of water and
detergent onto cleaning surface with trigger device.
Includes safety latch.

Detergent Injector — Allows you to siphon and mix
detergents.

Wand — Must be connected to the spray gun.
Heat Exchanger — Has a stainless steel coil

suspended into an 80 gallon water tank that is heated
to 200° by heating elements.

Pressure Relief Valve - Safety device to protect from
excessive pressure.

High Pressure Hose — Connect one end to water
pump high pressure discharge nipple and the other end
to spray gun.

Unloader Valve — Safety device which, when the
spray gun closes, prevents over pressurization
(Not Shown.)

NOTE: If trigger on spray gun is released for more
than 2 minutes, water will leak from the pump
protector. Warm water will discharge from pump
protector onto floor. This system prevents internal
pump damage.

Landa EHW Operator’s Manual 8.941-114.0 - M

9

Operations

W

A

RNING:

TANK FILL
ELBO

W

D

O NO

T

P

LU

G

V

ENT H

OLE

Part

No

Gar

den

Hose

Water Fill

Spout

CAU

T

ION

N

eve

r

Us

e

:

•

B

le

ach

,

ch

l

o

r

in

e

p

ro

d

u

c

t

s

a

n

d

o

t

h

e

r co

r

r

o

si

ve

chem

ica

l

s

•

L

iq

u

i

d

s

co

n

t

aining

so

lv

e

n

ts (

i.

e

.

p

a

in

t

t

h

in

n

e

r,ga

so

line

,

o

il)

•

T

r

i-sodium

p

hosph

at

e

p

r

od

u

cts

•

A

mm

o

n

i

a

pr

o

d

ucts

•

Acid-b

a

se

d

p

r

oducts

T

h

e

se

ch

e

mica

l

s w

ill

harm

t

h

e

u

ni

t

an

d

w

ill

da

m

a

g

e

t

h

e

su

rf

a

ce

b

e

i

ng cle

a

n

e

d

.

Use

ma

n

u

fa

ctu

r

e

r

'

s dete

r

g

en

t

s as r

e

co

m

m

e

n

d

e

d

in

ma

n

u

a

l

Small High

Pressure Hose

GROUN

D

L2

L

3

L1

L2

L3

L1

Incoming Power

Terminal Block

Ground

Terminal

Block

Assembly Instructions

STEP 1: Place machine in a conve-

nient location providing ample
support, drainage and room for
maintenance. Remove pallet bolts
and remove pallet, then re-install
bolts to level by adjusting (machine
must be level).

STEP 4: Do not turn power on to equipment until the heating module is
filled with water, as severe damage may occur to heater elements.

Prior to shipping, a rust inhibitor was added to the hot wa ter tank. This will
mix with the added water to prevent rust build-up inside the tank. Rust
inhibitor should be added when adding water after several hours of
operation to replace evaporated water.

Install water fill spout (See Cabinet). Spout opening should be facing up.
Insert water hose and fill. Do not over fill to allow for thermal expansion.
(Maximum is 80 gallons). After heater tank has been filled to the top,
operate for one week and then add one quar t of oil to slow evaporation. Be
sure to replace spout plug, hand tight only.

Turn on main power supply to unit. Set 7 day programmable timer to
desired ON/OFF time and switch machine power on, Water will heat up to
operating temperature in 30 to 60 minutes. The heater will turn off auto­matically when 200°F is reached. Water will come out of heater fill spout
due to heat expansion. However, this will stop after temperature is
reached.

Leave main power on to the machine to ensure hot water on pump start
up.

10

Landa EHW Operator’s Manual 8.941-114.0 - M

STEP 2: Place the pump package
on top of the heat exchange and
attach the small high pressure hose
to the fittings as shown.

STEP 3: Remove the hex head
screws from electrical access
panel. NOTE: bottom right screw
will only loosen; access panel is
designed to pivot on this screw.
Once access panel is rotated out of
the way, attach the electrical
harness from the pressure washer
to the heating module as follows:

a. Feed pressure washer wire

harness through the upper
wire hole located on the
side of the machine
(See Cabinet).

b. On the right side of the

incoming power terminal
block, connect the black
wire to line L1, the red wire
to line L2, and the white
wire to line L3.

c. Attach the green wire to the

ground terminal block.

CAUTION: Have qualified electri­cian attach the proper supply
cord to the terminal labeled L1,
L2 and L3.

Operations

Spray

Gun

Safety

Latch

Trigger

Wand

Pressure

Nozzle

Wand

Coupler

Wand
Collar

Pressure

Nozzle

STEP 5: 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.

STEP 6: 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.

STEP 7: Release the coupler collar
and push the nozzle until the collar
clicks. Pull the nozzle to make sure
it is seated properly.

WARNING: These machines are
designed for indoor use.
Machine must be stored indoors
when not in use.

Landa EHW Operator’s Manual 8.941-114.0 - M

11

Operations

Hose Coupler

Discharge

Nipple

Variable Pressure

Control Handle

Trigger

Variable Pressure

Wand (VP)

High

Pressure

Nozzle

Brass Soap

Nozzle

CAUTION

Never Use

:

• Bleach, chlorine products and other corrosiv

e chemicals

• Liquids containing solvents

(i.e. paint thinner,gasoline

,oil)

•

Tr

i-sodium phosphate product

s

• Ammonia products

• Acid-based prod

ucts

These chemical

s will harm

the unit and will

damage the

surf

ace being clea

ned.

Use manufacturer's detergents as recommended in

m

a

nu

a

l

Garden

Hose

Inlet

Toggle
Switch

CA

UTION

Ne

ver Us

e

:

• Bleach, chlor

ine products and o

ther corrosive chemicals

• Liquids contai

ning solv

ents (i.e.

paint thinne

r,

gasol

ine

,oil)

•

T

r

i-sodium phosp

hate products

• Ammonia pro

ducts

• Acid-based products
These chemical

s will har

m the unit and wi

ll damage the

surf

ace being clea

ned.

Use manuf

acturer's detergents as recom

mended in ma

nual

Operating Instructions

High Pressure

UTION

CA

ents (i.e

:

e

ine products and oth

er Us

v

ning solv

ate products

Ne

• Bleach, chlor
ducts

• Liquids contai

m the unit and wil

ucts
i-sodium phosph
Tr

•

s will har

ed.

• Ammonia pro

• Acid-based prod
These chemical

ace being clean
surf
Use manufacturer's detergents as recomm

,oil)

e chemicals

er corrosiv

paint thinner,gasoline
.

ual

l damage the

ended in man

STEP 1: Connect the high pressure
hose quick coupler to the discharge
nipple by sliding the quick coupler
collar back and inserting the quick
coupler onto the discharge nipple

STEP 2: Connect water supply
hose (garden hose) to inlet
connector. Do not allow acid or
abrasives to be pumped through

system. Turn on water.
and pushing the quick coupler
collar forward to secure it. Secure
desired pressure nozzle into
variable pressure wand coupler.

STEP 4: Turn the variable pressure control handle clockwise to increase
pressure.

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 Detergents & General Cleaning Tech­niques section.

STEP 3: Place toggle switch in the
ON position and then pull the
trigger on the spray gun to activate
a pressure switch which will then
start the machine. The ON position
is for auto shut down.

STEP 5: To stop machine, release
the spray gun and machine will
automatically stop in approximately
12 seconds. If machine is going to
be unattended for long periods of
time, turn water supply off and
place switch in OFF position.

12

Landa EHW Operator’s Manual 8.941-114.0 - M

NOTE: When removing or
replacing hoses, wand and
nozzles, move switch to OFF
position, open spray gun to release
pressure before removing
discharge hose.

Operations

TIMER — 7 DAY

C
ON

T
R
O
L

A
D
O
R
D

E
T
IEM

P
O
D
E SIE

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E
D
IE

A
S

M
I
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U
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E

R
IE
D

E
7
J
O
U
R

S

POWER

CO
R
R
I
E

N
T
E

C
O
UR
A

N
T

HEATER

C
A
L
E

N
T
A
D
OR

C
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A
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F
F
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­EA

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PU
LL
OU

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PI

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DES
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“O
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EXT
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A
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LAV
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PA
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.

®

Detergent

Injector

WARNING

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.

STEP 1: 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 2: Turn variable pressure control handle counter­clockwise for low pressure. Observe detergent flowing
in detergent line.
NOTE: Detergent cannot be applied during high
pressure.

STEP 3: With the motor
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.

Landa EHW Operator’s Manual 8.941-114.0 - M

Thermal Pump Protection

If you run your pressure washer for 3-5 minutes without
pressing the trigger on the spray gun, circulating water
in the pump can reach high temperatures. When the
water reaches this temperature, the pump protector
engages and cools the pump by discharging the warm
water onto the ground. This thermal device prevents
internal damage to the pump.

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 bo ttom 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 products and othe r co rro siv e
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
damage the surface being cleaned.

Rinsing

It will take a few seconds for the detergent to clear.
Apply safety latch to spray gun. Turn variable pressure
control handle to high pressure. NOTE: You can also
stop detergent from flowing by simply removing
detergent siphon tube from bottle.

13

Operations

Toggle

Switch

CAUTION

Shutdown Procedures

,oil)

ine
gasol
r,

corrosive chemicals

CAUTION

ther

the

ents (i.e. paint thinne

:

age

e

ine products and o

er Us
v

ining solv

will dam

Ne

hate products

• Bleach, chlor
mended in manual

ducts

• Liquids conta

m the unit and
i-sodium phosp
r

T

•
s will har

Ammonia pro

•

• Acid-based products

These chemical

ace being cleaned.
surf
Use manufacturer's detergents as recom

STEP 1: Rinse all lines (and
injector) with clean water, to
remove any soap residue then turn
toggle switch off.

Storage
Pump Storage

CAUTION: Always store your
pressure washer in a location where
the temperature will not fall below
32° F (0° C). The pump in this
machine is susceptible to
permanent damage if frozen.

STEP 2: Turn off water supply. STEP 3: Open spray gun to relieve

remaining pressure and remove
water supply hose.

In freezing conditions, disconnect
water supply and open spray gun to
allow water to drain, then turn off
motor.

CAUTION: Do not allow pump to
run longer than 5 minutes
without water. Disconnect all
hoses to allow water to drain.

CAUTION: With machine off,
open spray gun to release
pressure before removing
discharge hose.

1. Stop the pressure washer and detach supply hose
and high pressure hose. Squeeze the trigger of th e
spray gun to drain all water from the wand and
hose.

2. Restart pressure washer and let it run briefly (about
5 seconds) until water no longer discharges from
the high pressure outlet.

FREEZE DAMAGE IS NOT COVERED BY
WARRANTY.

If you must store your pressure washer in a location
where the temperature is below 32° F, you can
minimize the chance of damage to your machine by
draining your machine as follows:

14

Landa EHW Operator’s Manual 8.941-114.0 - M

Daily Maintenance

To ensure a problem free system, simple visual checks
can be performed. Check for leaks in inlet supply,
pumping system, pump to heater hose, heater, spray
gun(s) and high pressure hose. Check for normal
operating functions and pump oil level/condition. Check
nozzle condition. If badly worn or leaking conditions are
found, qualified personnel should repair or replace
components with new original or equivalent manufac­turers parts.

Check equipment for proper operation. Nozzle spray
should be uniform in flow, angle, and pressure. Clean if
nozzle is plugged and replace if worn. If a heavy
pulsation in the hose or spray is observed, repair of the
pumping system is required.

Weekly Maintenance

After the first week of operation, it is recommended 1
quart (1 litre) of motor oil be added to the heat
exchanger tank through the 1-1/4" fill pipe. This oil
creates a vapor barrier and slows evaporation of water
in the tank.

Maintenance

Check heat exchanger water level. The level must be
up to the filler pipe neck. Add water if necessary. If cold
water has been added, heating may cause the
expanding water to escape through the filler plug. This
will stop after operating temperature has been reached.

Monthly Maintenance

Check system for operation. Automatic start/stop, hot
high pressure water, and smooth operation should be
noted.

Change oil in pump crankcase. Note the condition of
the oil when drained. If found to be creamy, water seals
in pump may have to be removed and replaced.

Landa EHW Operator’s Manual 8.941-114.0 - M

15

Maintenance

Troubleshooting

PROBLEM POSSIBLE CAUSE SOLUTION

Faulty pressure gauge Install new gauge.

LOW OPERATING

PRESSURE

FLUCTUATING

PRESSURE

Insufficient water supply

Old, worn or incorrect spray nozzle

Plumbing or hose leak
Faulty or misadjusted unloader valve

(where applicable)
Worn packing in pump Install new packing kit.
Fouled or dirty inlet or discharge valves

in pump
Worn inlet or discharge valves Replace with valve kit.
Leaking pressure control valve (where

applicable)
Valves worn Check and replace if necessary.

Blockage in valve Check and clean out if necessary.
Pump sucking air
Worn piston packing Check and replace if necessary.

Use larger garden hose; clean filter washer
at water inlet.

Match nozzle number to machine
and/or replace with new nozzle.

Check plumbing system for leaks.
Retape leaks with teflon tape.

Adjust unloader for proper pressure. Install
repair kit when needed.

Clean inlet and discharge valves.

Rebuild or replace as needed.

Check water supply and suction line
for air seepage at joints.

PRESSURE LOW

AFTER PERIOD

OF NORMAL USE

PUMP NOISY

PRESENCE OF

WATER IN

PUMP OIL

Nozzle worn Check and replace if necessary.
Inlet or discharge valves blocked

or worn
Unloader valve seat worn Check and replace if necessary.

Air in suction line
Broken or weak inlet or discharge valve

springs
Foreign matter in valves Check and clean if necessary.

Worn bearings Check and replace if necessary.
Water sprayed at machine
High humidity in air Check and change oil twice as often.

Piston packing worn Oil seal worn Check and replace if necessary.

Check and clean or replace if necessary.

Check water supply connections
on suction line.

Check and replace if necessary.

Change oil. Direct spray away from
machine.

16

Landa EHW Operator’s Manual 8.941-114.0 - M

PROBLEM POSSIBLE CAUSE SOLUTION

OIL SQUIRTS OUT

OF OIL CAP ON PUMP

WATER DRIPPING FROM

UNDER PUMP
OIL DRIPPING Oil seal worn Check and replace if necessary.

EXCESSIVE VIBRATION

IN DELIVERY LINE

SYSTEM WILL

NOT START

SYSTEM WILL

NOT STOP

SYSTEM STOPS AFTER

APPROXIMATELY

10 SECONDS AND

THEN RESTARTS

WATER IS

NOT HOT

MOTOR ”HUMS” BUT

DOES NOT TURN

PUMP RUNNING

NORMALLY BUT LOW

WATER PRESURE

Pump overfilled with oil

Piston packing worn Check and replace if necessary.
O-Ring plunger retainer worn Check and replace if necessary.
Cracked piston Check and replace if necessary.

Irregular functioning of the valves Check and replace if necessary.
Power, water, auto switch not on Check and turn on.

Motor overload tripped Check and reset.
Control fuse blown (2 or 3 amp) Check and replace.
Pressure switch faulty Check, clean or replace.
Timer faulty Check and replace.
Water leak in discharge line Repair water leak.

Pressure switch faulty
Timer resistor faulty Replace timer.

Faulty pressure switch Check and replace.

Leak in system Fix leak.

Tank water low Check for leaks and fill.
Temperature or level controls faulty Check and replace.

Electric motor single phasing

Air leak in inlet

Faulty pressure unloader

Maintain oil level at red dot on sight glass at
rear of pump or at top of notch on
dipstick (where applicable).

Disconnect at timer. If unit stops,
replace pressure switch.

Check for blown fuse or loose power
line connections.

Check water supply and possibility
of air entering water connections.

Bypass pressure unloader by wiring spray
gun open. If good PSI, turn machine off and
replace regulator. DO NOT
RELEASE SPRAY GUN WHILE
BY PASSING UNLOADER.

Maintenance

Landa EHW Operator’s Manual 8.941-114.0 - M

17

Maintenance

PROBLEM POSSIBLE CAUSE SOLUTION

WATER ESCAPING

FROM FILL PIPE ON HEAT

EXCHANGER

UNLOADER DOES

NOT GO INTO

BYPASS OR

WILL CYCLE ITSELF

SPIKES

TOO HIGH

SYSTEM WON’T

COME UP

TO PRESSURE

Cold water added to heat exchanger
Ruptured coil or leaking Check, repair or replace fittings.

Spray gun or hose is leaking
to atmosphere

Check plunger either did not move or
did not seal

Actuator O-ring failure

Slow moving actuator; this may be
caused by bad O-rings either on the
plunger or inside the actuator fitting

Spring tension

Hose length

Water is leaking between ball
and seat

Cs on actuator plunger
are bad

Locknut may be improperly set

Tip/GPM combination is incorrect
Tip worn- the GPM may be greater than

expected with a worn tip
Bad gauge - the pressure may

be higher than the gauge shows

Will stop once at operating
temperature.

Check and repair all leaks.
Remove discharge port. Clean and

inspect the check plunger.
Replace the O-ring if needed.

Remove actuator plunger assembly and
inspect O-ring and back-up rings. Replace
if necessary.

Remove the actuator assembly to inspect
the O-ring and back-up rings. The actuator
assembly will have to be disassembled to
inspect and/or replace the O-rings in the
actuator fitting.

Adjustment should stop when pressure is
no longer affected by further
compression of the spring.

Hose length can affect the amount of
spike pressure. Long lengths of hose may
cause high spike pressures.

Disassemble inlet fitting and check
for contaminates or worn parts.
Clean or replace as needed.

Remove actuator assembly and
inspect O-ring and back-up rings.
Replace if necessary.

Readjust locknut.
NOTE: The locknut is inside the spring on
models that have the stem exposed above
the spring.

Check actual GPM on unrestricted pump
and size tip accordingly.

Replace tip.

Replace gauge.

18

Landa EHW Operator’s Manual 8.941-114.0 - M

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.

Pump Oil
SAE 10W-40

Replace High Pressure Nozzle Every 6 months
Replace Quick Connect Annually
Clean Water Screen/Filter Weekly
Replace HP Hose Annually if there is any sense of wear
Grease Motor Every 10,000 hours
Inspect Heater Module Tank Water Level Weekly

(non-foaming)

Inspect Daily inspect the oil level
Change After first 50 hours, then every 500 hours or annually

Oil Change Record

D a t e O i l C h a n g e d

Month/Day/Year

Estimated Operating
Hours Since Last Oil

Change

D a t e O i l C h a n g e d

Month/Day/Year

Estimated Operating
Hours Since Last Oil

Change

Landa EHW Operator’s Manual 8.941-114.0 - M

19

Notes

20

Landa EHW Operator’s Manual 8.941-114.0 - M

Parts

EHW4-2000C

1.109-500.0

EHW4-2000F

1.109-954.0

Parts

EHW4-3000C

1.109-501.0

EHW4-3000F

1.109-955.0

LANDA EHW

Landa EHW Operator’s Manual 8.941-114.0 - M

21

Landa EHW Left

30

34

31

15

15

14

13

9

18

15

16

17

39

29

41

37

40

38

14

32

For Detail See
Electrical Box,

Page 19

22

Landa EHW Operator’s Manual 8.941-114.0 - M

Landa EHW Right

Cold W

a

ter

Inle

t

Cold W

a

te

r

Outle

t

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25

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8

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20

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23

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21

26

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49

17

28

39

To Coil in
Lower Cabinet

42

33

3

23Landa EHW Operator’s Manual 8.941-114.0 - M

Landa EHW

REF PART NO. QTY DESCRIPTION NOTES

1 8.712-361.0 1 NOZZL E, 0006, RED

- 8.712-362.0 1 NOZZLE, 1506, YELLOW

- 8.712-363.0 1 NOZZLE, 2506, GREEN

- 8.712-364.0 1 NOZZLE, 4006, WHITE

- 8.712-345.0 1 NOZZLE, SAQCMEG 0004 RED

- 8.712-346.0 1 NOZZLE, SAQCMEG 1504 YELLOW

- 8.712-347.0 1 NOZZLE, SAQCMEG 2504 GREEN

- 8.712-348.0 1 NOZZLE, SAQCMEG 4004 WHITE

- 8.712-353.0 1 NOZZLE, SAQCMEG 0005, RED

- 8.712-354.0 1 NOZZLE, SAQCMEG 1505, YELLOW

- 8.712-355.0 1 NOZZLE, SAQCMEG 2505, GREEN

- 8.712-356.0 1 NOZZLE, SAQCMEG 4005, WHITE
2 9.802-064.0 4 GROMMET, RUBBER, NOZZLE HOLDER
3 9.802-074.0 12 NUT, 1/4" SQUARE HEAD
4 8.912-140.0 1 CABINET, SEA, SS
5 9.802-522.0 1 STRAIN RELIEF, 1"
6 8.900-262.0 1 LABEL, CONTROL PANEL
7 8.900-232.0 1 LABEL, EHW
8 8.900-409.0 1 LABEL, 4-2000

- 8.900-411.0 1 LABEL, 4-3000
9 9.800-020.0 1 LABEL, COLD WATER INLET

10 8.932-970.0 1 LABEL, COLD WATER OUTLET
11 8.707-000.0 1 CONNECTOR, 1/2" ANCHOR
12 8.755-033.0 1 BULKHEAD, 3/8" FXF NPT, STEEL
13 - 1 MOTOR
14 9.802-788.0 14 NUT, 3/8" WHIZ LOC SS
15 9.802-808.0 14 WASHER, 3/8", SAE, SS
16 9.802-520.0 1 STRAIN RELIEF, 3/4"

- 9.802-522.0 - STRAIN RELIEF 1"

17 9.802-721.0 10 BOLT, 3/8" X 1" SS
18 9.802-774.0 2 NUT, 1/4" ESNA, NC, SS
19 9.800-016.0 1 LABEL, ELECTRICAL DISCONNECT WARNING
20 9.802-146.0 1 SWIVEL, 1/2" MP X 3/4" GHP W/STRAINER
21 9.802-724.0 4 BOLT, 3/8" X 1-1/2", HH NC, SS
22 9.802-452.0 1 SWITCH, ROCKER, CARLING, M-CIRCUIT, RED

- 9.802-451.0 1 SWITCH, ROCKER, CARLING,W/GREEN LIGHT

23 9.802-067.0 4 BUMPER PAD, ENGINE
24 9.802-066.0 4 PAD, SOFT RUBBER, DURO 50
25 9.802-818.0 4 WASHER, 3/8" X 1", SS
26 9.802-760.0 6 SCREW, 1/4" X 1/2", BH SOL C/S SS
27 9.802-812.0 4 WASHER, 7/16" X 2-1/2", ZINC
28 9.802-039.0 1 ELBOW, 1/2" JIC X 3/8" MPT STEEL
29 - 1 PUMP

SEE SPECIFICATIONS PAGES

(AUTO START/STOP OPTION)

SEE SPECIFICATIONS PAGES

(4-2000)
(4-2000)
(4-2000)
(4-2000)
(4-3000)
(4-3000)
(4-3000)

(4-3000)
(4-2000F)
(4-2000F)
(4-2000F)

(4-2000F)

(EHW4-2000C)
(EHW4-3000C)

24

Landa EHW Operator’s Manual 8.941-114.0 - M

Landa EHW

REF PART NO. QTY DESCRIPTION NOTES

30 8.718-682.0 2 BOLT, 3/8" X 3-1/2", TAP, SS
31 9.803-136.0 1 RETAINER, PUMP TAKE UP
32 9.802-827.0 2 NUT, 3/8", SS
33 8.932-969.0 1 LABEL, WARNING SERVICE CORD
34 9.803-131.0 1 RAIL, PUMP
35 9.803-127.0 1 COVER, ACCESS HOLE, SEA

36 9.800-049.0 1
37 9.802-259.0 15" HOSE, 1/2" PUSH-ON

38 9.802-151.0 2 SWIVEL, 1/2" JIC FEM, PUSH-ON, BRASS
39 8.918-422.0 2 HOSE, 3/8" X 20", 2 WIRE, PRESSURE LOOP
40 9.802-131.0 1 ELBOW, 1/2" JIC X 3/8", 90° BRASS
41 9.802-039.0 1 ELBOW, 1/2" JIC X 3/8", 90° BRASS
42 8.912-141.0 1 COVER, SEA, STAINLESS STEEL
43 9.802-071.0 8.25 ft TRIM, 1/16", BLACK
44 8.900-826.0 1 LABEL, WARNING INSTRUCTIONS
45 8.932-965.0 1 LABEL, WARNING - EXPOSED PULLEYS
46 8.900-832.0 2 LABEL, STRIPE
47 8.719-002.0 4 WASHER, 5/16" X 1-1/4", FENDER SS
48 8.718-757.0 6 SCREW, 1/4" X 1/2" SS, PHIL, PH
49 9.802-073.0 3.5 ft. WEATHER-STRIP, 1/8" X 1/2"
50 - 1 MOTOR BUSHING
51 - 1 PUMP BUSHING
52 - 1 MOTOR PULLEY
53 - 1 PUMP PULLEY
54 - 2 BELT

LABEL, MANUFACTURERS
CLEANING SOLUTION

-

SEE SPECIFICATIONS PAGES
SEE SPECIFICATIONS PAGES
SEE SPECIFICATIONS PAGES
SEE SPECIFICATIONS PAGES
SEE SPECIFICATIONS PAGES

25Landa EHW Operator’s Manual 8.941-114.0 - M

Electrical Box

GROUND

1

2

3

4

5

9

10

11

12

13

6

14

7

15

8

16

17

18

19

20

21

22

3

23

9

26

Landa EHW Operator’s Manual 8.941-114.0 - M

Electrical Box

REF PART NO. QTY DESCRIPTION NOTES

1-1CONTACTOR
2-1OVERLOAD
3 9.802-695.0 6 NUT, 10/32" KEPS

- - 1 NUT, 10/32" KEPS

4 9.802-457.0 6" DIN RAIL

- - 4" DIN RAIL
5 9.800-040.0 1 LABEL, GROUND
6 9.802-476.0 1 BOX, PLASTIC 10" X 8" X 6" W/LID
7 9.803-038.0 1 BRACKET, SUPPORT ELEC BOX
8 9.802-524.0 2 LOCKNUT, 1/2"
9 9.802-759.0 3 SCREW, 10/32 X 1/2 BH SOC BLK

10 9.802-762.0 1 SCREW, 10/32" X 1-1/4" RH SC BLK

- - 1 SCREW, 10/32" X 1-1/4" RH SC BLK

11 9.802-515.0 1 STRAIN RELIEF, 1/2" ST. MED
12 9.802-424.0 38" CORD, SERVICE, SEO 16/4
13 9.802-514.0 1 STRAIN RELIEF, 1/2" SMALL
14 9.802-518.0 2 STRAIN RELIEF, 3/4" ST. LARGE
15 9.802-429.0 10' CORD, SERVICE SEO 12/4
16 9.802-429.0 38" CORD, SERVICE, SEO 12/4
17 - 1 TRANSFORMER
18 - 2 PRIMARY FUSE
19 - 1 SECONDARY FUSE
20 8.751-306.0 1 TIMER, MULTI-FUNCTION 24V-120/240V 5A
21 9 .8 02-4 6 8.0 1 RELAY, 120VRH28-UL-AG 1 20
22 9.802-467.0 1 BASE, RELAY, SH2B-05, IDEC
23 9.802-526.0 2 LOCKNUT, 3/4"

SEE SPECIFICATIONS PAGES
SEE SPECIFICATIONS PAGES

(AUTO START/STOP OPTION)

(AUTO START/STOP OPTION)

(AUTO START/STOP OPTION)

SEE SPECIFICATIONS PAGES
SEE SPECIFICATIONS PAGES
SEE SPECIFICATIONS PAGES

27Landa EHW Operator’s Manual 8.941-114.0 - M

Cabinet Left

.

W

AR

N

I
N

G

:

T
AN

K

F
I
L

L

E
L
B

O

W

DO

N

O
T
P

L
U

G

V
E

N
T

H
OL

E

P

a
r
t
N

o

1

2

6

5

4

7

9

8

3

10

64

11

13

12

17

16

15

42

43

44

45

46

47

24

To

Pressure

Washer

43

43

58

75

79

74

76

78

77

65

66

14

14

28

Landa EHW Operator’s Manual 8.941-114.0 - M

32

31

30

18

26

27

25

24

29

28

19

20

21

22

23

56

33

34

35

38

36

37

41

40

39

48

49, 80

50

51

53

52

54

55

43

59

47

53

56

64

57

48

23

61

60

62

63

53

61

52

43

25

71

68

67

70

69

Coil Assembly

8.918-685.0

59

72, 80

Cabinet Right

L1
L2
L3

29Landa EHW Operator’s Manual 8.941-114.0 - M

Cabinet

REF PART NO. QTY DESCRIPTION NOTES

1 9.802-039.0 1 ELBOW, 1/2" JIC X 3/8" MPT
2 8.913-216.0 1 LID, TOP COVER
3 8.913-218.0 1 OUTER WRAP, FILL SIDE
4 8.913-219.0 1 OUTER WRAP, POWER SIDE
5 8.940-048.0 1 LABEL, HEATING UNIT POWER
6 9.802-455.0 1 LIGHT, GREEN 125V
7 9.802-451.0 1 SWITCH, ROCKER CARLING W/GREEN LENS
8 8.716-254.0 1 TIMER, 7 DAY PIN, 120V, 20A PB873MKZ

9 8.706-161.0 1 ELBOW, 1/4" STREET, 90° GALV
10 8.716-633.0 1 SWITCH, LIMIT W/CLAMP
11 8.913-211.0 1 TANK ASSEMBLY
12 8.716-650.0 9 GASKET, 6000W HEATER, 2500 SERIES
13 8.716-645.0 9 HEATER, 4500W 480V #055994-091

- 8.751-252.0 9 HEATER, 1" SCREW PLUG 575/600V 4500W (575 VOLTS MODELS)
14 8.913-222.0 2 PLUG, 1.5" PIPE, BLACK
15 8.913-221.0 1 ELBOW, 1-1/2" FEMALE, BLACK 90°
16 9.802-518.0 1 STRAIN RELIEF, LARGE
17 9.802-526.0 1 LOCKNUT, 3/4" 8465
18 8.913-212.0 1 TANK ASSEMBLY LID
19 8.913-213.0 2 BRACKET, COIL
20 8.706-542.0 4 PAD, 1/4" RUBBER, COIL
21 8.711-785.0 10 HOSE, 3/8" X 1/2" PUSH-ON
22 8.913-214.0 1 BRACKET, COIL SPACER
23 8.706-322.0 2 TUBE FITTING, PARKER 8MSC6N-316 1/2" SS A-LOK
24 8.706-207.0 2 ELBOW, 3/8" STREET
25 8.755-033.0 2 BULKHEAD, 3/8" FXF NPT, STEEL
26 8.716-461.0 1 TERMINAL, GROUNDING LUG, 1/0-6 COPPER WIRE
27 8.716-122.0 1 BLOCK, POWER DISTR, 3 POL, GO63133
28 9.802-491.0 1 BLOCK, TERMINAL, 4 POLE
29 8.724-284.0 1 CONTACTOR, DP, C25FNY44AL, 60 AMP
30 8.913-210.0 1 TANK BASE ASSEMBLY
31 8.718-696.0 4 BOLT, 1/2" X 3" NC, SS
32 8.716-225.0 1 HOLDER, FUSE BLOCK, BUSS R60060-3CR
33 8.730-762.0 3 FUSE, BUSS FRS-R-50, 600V 50 AMP
34 8.716-883.0 1 TRANSFORMER, 208/230/460V- 24/115V, .050KVA

- 9.803-668.0 1 TRANSFORMER, 550V/575/600V-115V,. 050KVA (575V MODELS)
35 8.712-179.0 1 SWITCH TH HI 84°C NC 1/2 X 1/2 SP
36 8.913-220.0 1 ELECTRICAL PANEL
37 9.800-016.0 1 LABEL, DISCONNECT POWER SUPPLY
38 8.913-215.0 1 PLATE, BACK COVER
39 8.913-217.0 1 PLATE, ELECTRICAL ACCESS
40 8.940-047.0 1 LABEL, WARNING

30

Landa EHW Operator’s Manual 8.941-114.0 - M

Cabinet

REF PART NO. QTY DESCRIPTION NOTES

41 8.912-251.0 1 COIL , 1/ 2" O. D. S S TUBING
42 9.802-793.0 30 NUT, CAGE 1/4" X 16 GA
43 9.802-754.0 32 SCREW, 1/4" X 1/2" HH NC WHIZ LOCK
44 8.717-480.0 4 INSULATION, 1" X 24" X 48" FIBERGLASS FOIL ONE SIDE
45 8.706-569.0 8 ft GASKET, NEOP
46 8.718-755.0 2 SCREW, 8/32" X 1-1/2", SS PHIL PH
47 9.803-551.0 10 SCREW, 5/16" X 3/4" WHIZ
48 8.718-887.0 12 NUT, WHIZ LOC, 5/16 FLANGE SS
49 8.718-639.0 10 BOLT, 5/16" X 2 1/2" NC HH SS
50 8.716-533.0 9 CLAMP, TIE WRAP ADHESIVE
51 9.802-765.0 9 SCREW, 1/4" X 1/2" BH SOC CS
52 8.718-937.0 7 SCREW, #8 X 3/4" PHILLIPS ZINC, HEK
53 8.718-936.0 10 SCREW, #8 X 1/2" PHILLIPS ZINC, TEK
54 8.940-007.0 1 LABEL, INCOMING LINE
55 9.802-259.0 1 ft. HOSE, 1/2" PUSH-ON
56 9.800-040.0 3 LABEL, GROUND SYMBOL
57 9.802-103.0 1 BUSHING, SNAP 5/8
58 9.802-171.0 1 NIPPLE, 1/2" HEX STEEL
59 9.802-073.0 10 ft. WEATHERSTRIP, 1/8" X 1/2"
60 8.718-803.0 1 SCREW, 10/32" X 3/4" BHSOC
61 9.802-695.0 3 NUT, 10/32" KEPS
62 9.802-464.0 1 FUSE, PAPER BUSS 8/10 250V
63 8.713-081.0 2 FUSE, CLASS R 1/2 AMP
64 9.802-759.0 19 SCREW, 10/32" X 1/2" BH SOC
65 8.724-513.0 1 LABEL, FILL ELBOW
66 9.800-021.0 1 LABEL, HOT WATER OUTLET
67 8.915-607.0 1 LABEL, CLASS RD5, 50 AMP
68 8.915-610.0 1 LABEL, XFMR PRIMARY/ SECONDARY FUSES
69 9.802-770.0 1 SCREW, 1/4" X 1", BH SOC CS
70 9.808-773.0 1 NUT, 1/4" ESNA, NC
71 9.802-065.0 1 GROMMET, 1-5/16" RUBBER
72 8.718-621.0 2 BOLT 5/16 " X 1" SS
73 8.716-707.0 30" 3/8" SHRINK TUBING NOT SHOWN
74 8.902-433.0 1 PRESSURE RELIEVE VALVE
75 8.711-785.0 36” 3/8" PUSH-ON HOSE
76 9.802-048.0 1 1/2" SWIVEL JIC
77 9.802-036.0 1 NIPPLE, 1/2" JIC X 3/8"
78 8.706-214.0 1 TEE, 3/8" FEMALE PIPE
79 9.800-013.0 1 LABEL, INDOOR USE ONLY
80 9.802-805.0 12 WASHER, 5/16" FLAT, SS

31Landa EHW Operator’s Manual 8.941-114.0 - M

Hose & Spray Gun

5

6

1

2

4

Pressure

Nozzle

32

Landa EHW Operator’s Manual 8.941-114.0 - M

Hose & Spray Gun

REF PART NO. QTY DESCRIPTION NOTES

1 9.802-165.0 1 COUPLER, 1/4" MALE

- 9.802-096.0 1 QUICK COUPLER, O-RING, SMALL NOT SHOWN

2 8.711-293.0 1

- 8.710-722.0 1 WAND ONLY, SS, VP, AR (AL 344)

- - 1 83-SSVPKIT KIT, REPAIR, AR SS, SEAT
3 9.802-286.0 1 NOZZLE ONLY, 1/8", BRASS, SOAP NOT SHOWN
4 4.775-054.0 1 EASY! FORCE ADVANCED KNA
5 8.739-072.0 1 HOSE 3/8" X 50', 2 WIRE, TUFF-SKIN
6 9.802-166.0 1 COUPLER, 3/8" FEMALE

- 9.802-100.0 1 QUICK COUPLER, O-RING
7 8.707-139.0 1 COUPLER, 1/4"PLUG, MALE, STEEL/ZINC NOT SHOWN

8 9.802-164.0 1 COUPLER, 1/4"SOCKET, FEMALE, BRASS NOT SHOWN

WAND, VP ZINC 1/4" (AL 344) W/CPLR,
W/SOAP NOZZLE

NOT SHOWN

LARGE

33Landa EHW Operator’s Manual 8.941-114.0 - M

Handheld Wireless

C

old

Water

Inlet

Hot

Wa

ter

Ou

t

let

ON

P

R
ENDE

R

OF

F

I

O

AP

AG

A

R

1

2

3

4

5

6

8

9

10, 21

11

12

13

14

15

16

17

18

19

20

22

23

24

25

26

27

28

29

30

7

11

31

32

18

8

33

33

34

33

34

35

34

Landa EHW Operator’s Manual 8.941-114.0 - M

Handheld Wireless

REF PART NO. QTY DESCRIPTION NOTES

1 8.707-057.0 2 STRAINER, PLASTIC 1/4" HOSE BARB
2 6.390-126.0 6 CLAMP, HOSE, .46-, .54 ST
3 8.706-538.0 3 GROMMET, 1.375 OD X .75 ID X 3/8"
4 8.706-777.0 2 NIPPLE, 1/4" CLOSE
5 8.706-841.0 1 TEE, 1/4" FEMALE
6 8.706-941.0 1 HOSE BARB, 1/4" BARB X 1/4" ML PIPE
7 8.706-925.0 2 HOSE BARB, 1/4" BARB X 1/4" PIPE 90°
8 9.802-251.0 6 ft. TUBE, 1/4" X 1/2", CLEAR VINYL
9 9.802-455.0 2 LIGHT, INDICATOR, GREEN 125V

10 9.802-491.0 1 BLOCK, TERMINAL, 4 POLE
11 8.716-442.0 1 WIRELESS, TRANSMITTER-RECEIVER, 4 RELAY
12 8.716-444.0 1 CABLE, RADIO REMOTE, CC58C-5 COAXIAL CABLE

13 8.716-445.0 1
14 8.716-446.0 1 ANTENNA, RADIO REMOTE, BNC CONNECTION

15 9.802-532.0 2 VALVE, CHEM. LESS SOLENOID 04F20C2118AAF
16 9.802-533.0 2 SOLENOID COIL, 120V AF4C05
17 8.718-569.0 4 SCREW, 10-32 X 1/2 PL RDH PH
18 9.802-695.0 4 NUT, 10/32" KEPS
19 8.718-749.0 2 SCREW, 8/32" X 3/4" SS PHIL
20 9.802-764.0 1 SCREW, 10/32" X 3/4" HH
21 9.802-494.0 2 S BAR, JUMPER NOT SHOWN
22 9.802-785.0 2 NUT, 8/32", KEPS
23 8.912-674.0 1 BRACKET, ANTENNA MOUNT WIRELESS REMOTE
24 8.912-675.0 1 BRACKET, TRANSMITTER, WIRELESS REMOTE
25 9.802-772.0 4 SCREW, 10/32" X 1/4" HWH
26 8.930-156.0 1 LABEL, LANDA SEA/EHW, WIRELESS REMOTE
27 8.930-164.0 1 BASE, LANCOM RECEIVER, -07
28 8.930-165.0 1 BRACKET, SOLENOID MOUNT, -07
29 8.930-166.0 1 COVER, ACCESS HOLE, LANCOM, -07
30 8.930-167.0 1 LABEL, CHEMICAL, WIRELESS
31 9.802-514.0 1 STRAIN RELIEF, SMALL
32 9.802-698.0 2 SCREW, 10/32 X 1/2 SLOT PAN
33 9.802-251.0 20 ft TUBE, 1/4" X 1/2" CLEAR VINYL
34 8.904-203.0 1 INJECTOR
35 9.802-042.0 1 ELBOW, 1/2" JIC X 3/8 FPT

CONNECTOR, RADIO REMOTE,
BULKHEAD BNC-BNC

35Landa EHW Operator’s Manual 8.941-114.0 - M

Handheld Wireless Operating Instructions

Pump Switch

Transmitter

Chemical 2

Light

Chemical 1

Light

When machine is not in use, push control panel pump
switch to the "OFF" position. Store transmitter on the
transmitter bracket.

NOTE: Normal operating range for the transmitter is
about 500 feet interference-fee (line of site); 300 feet
light interference (inside warehouse, pallet shelves);
and 100 feet heavy interference (through concrete/
stone walls, metal doors). If greater range is desir ed ,
the antenna can be mounted at a separate location.
This requires a longer cable - RG-58-U coaxial with
BNC end connectors.

Bracket

For Wireless Remote Control Operation

Step 1: Push the control panel pump switch to the "ON"

position (first click). With the switch in this position the
wireless remote is ready for use.

Step 2: To control pressure
washer in remote mode, press
transmitter button 1 to turn pump
"ON". Press transmitter button 2
to turn pump "OFF". Pump can
also be controlled manually by
pressing the control panel pump
ON/OFF switch.

Chemical 1: To start chemical 1
flow, press transmitter button 3.
The green indicator light will illu­minate when chemical 1 is in

Transmitter

use. Press button 3 again to stop
chemical 1 flow.

Chemical 2: To start chemical 2 flow, press transmitter
button 4. The green indicator light will illuminate when
chemical 2 is in use. Press button 4 again to stop
chemical 2 flow.

36

Landa EHW Operator’s Manual 8.941-114.0 - M

Handheld Wireless Operating Instructions

Transmitter

Button 1

#7 LED

#6 LED

Select

Button

Function

Button

Receiver

Transmitter/Receiver Communication Set-up at Factory

Programming communication between the receiver and transmitter requires the removal of the receiver enclosure
lid. The receiver must have 120V power. This process utilizes the Function/Select buttons on the main panel control
board (PCB) of the receiver (See Figure below). A number of colored LED's are used to indicate various steps in the
programming process (See Figure below). It is recommended that this process is not done while wired to the
machine.

Receiver Programming LED's and Programming Switches

The T60-04CRV receiver programming process is as follows: While programming, make sure there are no other
transmitters are transmitting in the area.

1. Press the Function button once to select the "Learn Code" mode. (#6 Red LED lights, you have ap proximate ly
5 seconds to make the next selection.)

2. Press the Select button once and then press any button on the transmitter and hold. (#6 Red LED will blink on/
off three times and go out. After releasing the transmitter button, the relays will respond to the appropriate buttons
(Button 1/R1; Button 2/R2; Button 3/R3; Button 4/R4); and the #6 red LED will blink on/off indicating that one or
more adjustable codes have been learned by this receiver.

3. Press and hold the Select button for 6-8 seconds so the yellow LED is on solid. (#7 Yellow LED lights)

NOTE: This step is only completed when establishing the first transmitter communication.

The receiver is now programmed to the desired transmitter.

37Landa EHW Operator’s Manual 8.941-114.0 - M

Downstream Injector

2

1

3

4

2

REF PART NO. QTY DESCRIPTION NOTES

1 9.802-216.0 1 INJECTOR, DET, NON ADJUST,3-5 GPM, 0.83
2 6.390-126.0 2 CLAMP, HOSE, .46-, .54 ST
3 9.802-251.0 6 ft. TUBE, 1/4" X 1/2", CLEAR VINYL
4 8.707-057.0 1 STRAINER, 1/4", HOSE BARB

38

Landa EHW Operator’s Manual 8.941-114.0 - M

Pump

Standard

2

8

5

14

11

8

9

3

12

10

6

1

7

4

13

15

16

REF PART NO. QTY DESCRIPTION NOTES

1 8.933-006.0 1 SWITCH, FLOW MV60

- 8.724-844.0 1 SWITCH, REED REPLACEMENT, MV-60
2 8.706-168.0 1 ELBOW, 3/8", MALE, PIPE, STEEL
3 8.750-298.0 1 UNLOADER, VRT 3, 8 GPM @ 3630 PSI
4 9.802-152.0 1 SWIVEL, 3/4" SAE FEM, PUSH-ON, BRASS
5 9.802-261.0 19" HOSE, 3/4" PUSH-ON
6 8.706-888.0 1 ELBOW, 3/4" JIC X 1/2", 90° BRASS
7 9.802-048.0 1 SWIVEL, 1/2" JIC FEM, 3/8" MALE, STEEL
8 9.802-039.0 2 ELBOW, 1/2" JIC, 3/8", 90°, STEEL
9 8.706-207.0 1 ELBOW, 3/8" STREET, STEEL

10 8.706-844.0 1 TEE, 1/2" FEMALE, PIPE, BRASS
11 8.706-790.0 1 NIPPLE, 1/2" CLOSE, BRASS
12 8.707-020.0 1 PUSH-ON, 1/2" MPT X 3/4" BARB, BRASS
13 9.803-670.0 1 PUMP PROTECTOR, 1/2" 190°
14 9.802-131.0 1 ELBOW, 1/2" JIC X 1/2" 90° BRASS
15 9.802-254.0 19.5 in HOSE, 1/4" PUSH-ON
16 8.904-874.0 1 PUMP, LT5030R

39Landa EHW Operator’s Manual 8.941-114.0 - M

LT.2 Series Pump

TORQUE SPECS

ITEM # FT. LBS.

14 95

15 45

23 8

34 10

42 30

48 8

5

7

12

12

23

24

25

26

27

28

29

30

27

31

26

32

33

24

23

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

2

3

4

6

8

9

10

13

14

15

16

17

18

19

20

21

22

13

14

11

11

1

8.921-712.0 LT6036R.2

REF PART NO. QTY DESCRIPTION NOTES

1 8.752-825.0 1 CRANKCASE
2 - 3 PLUNGER OIL SEAL SEE KITS TABLE
3 - 3 O-RING Ø1.78 X 37.82 SEE KITS TABLE
4 - 3 PRESSURE RING, 18MM SEE KITS TABLE
5 - 3 U-SEAL, 18MM SEE KITS TABLE
6 - 3 INTERMEDIATE RING, 18MM SEE KITS TABLE
7 - 3 U-SEAL, 18MM SEE KITS TABLE
8 9.802-926.0 1 BRASS PLUG, G1/2

9 9.803-199.0 1 COPPER WASHER 1/2
10 8.753-816.0 1 MANIFOLD HOUSING
11 9.804-498.0 6 O-RING Ø2.62 X 25.1 SEE KITS TABLE
12 - 6 VALVE ASSEMBLY SEE KITS TABLE
13 9.803-193.0 6 O-RING 3068 SEE KITS TABLE
14 9.802-928.0 6 VALVE PLUG
15 8.753-817.0 8 MANIFOLD STUD BOLT
16 9.802-890.0 8 LOCK WASHER
17 8.719-008.0 1 COPPER WASHER 3/8
18 8.707-262.0 1 BRASS PLUG 3/8
19 - 6 VALVE SEAT SEE KITS TABLE
20 - 6 VALVE PLATE SEE KITS TABLE

40

Landa EHW Operator’s Manual 8.941-114.0 - M

LT.2 Series Pump

REF PART NO. QTY DESCRIPTION NOTES

21 - 6 VALVE SPRING SEE KITS TABLE
22 - 6 VALVE CAGE SEE KITS TABLE
23 8.752-830.0 8 HEX SCREW
24 9.802-884.0 8 WASHER
25 9.803-182.0 1 CLOSED BEARING HOUSING
26 9.803-186.0 2 O-RING Ø2.62 X 71.12
27 9.803-160.0 2 ROLLER BEARING
28 8.753-818.0 1 CRANKSHAFT Ø25 (4540)

- 8.752-827.0 1 CRANKSHAFT Ø25 (6036)
29 9.803-167.0 1 CRANKSHAFT KEY
30 8.752-834.0 1 OIL DIP STICK
31 9.803-139.0 1 CRANKSHAFT SEAL
32 9.803-177.0 2 SHIM
33 9.803-181.0 1 BEARING HOUSING
34 8.752-841.0 3 PLUNGER BOLT SEE KITS TABLE
35 8.752-820.0 3 BONDED SEAL SEE KITS TABLE
36 8.753-819.0 3 PLUNGER, 18MM SEE KITS TABLE
37 8.752-823.0 3 COPPER SPACER SEE KITS TABLE
38 8.753-820.0 3 PLUNGER ROD
39 8.752-822.0 3 CONNECTING ROD PIN
40 8.752-821.0 3 CONNECTING ROD
41 9.802-889.0 6 SPRING WASHER
42 9.802-937.0 6 CONNECTING ROD SCREW
43 9.803-194.0 1 O-RING Ø2.62 X 152.07
44 8.752-826.0 1 CRANKCASE COVER
45 9.803-906.0 1 O-RING Ø1.78 X 14.00
46 8.707-262.0 1 BRASS PLUG G3/8
47 9.803-202.0 1 SIGHT GLASS G3/4
48 8.752-824.0 5 COVER SCREW

KIT NUMBERS 8.753-821.0 8.753-822.0 8.753-823.0 8.753-824.0 8.752-825.0
KIT DESCRIPTION
ITEM NUMBERS

INCLUDED
NUMBER OF

CYLINDERS KIT
WILL SERVICE

Plunger Seals

16 mm

3, 5, 7 3, 4, 5, 6, 7 34, 35, 36, 37 11, 12, 13 2

Seal Packing

16 mm

31163

Plunger
16 mm

Complete

Valve

Plunger Oil

Seals

41Landa EHW Operator’s Manual 8.941-114.0 - M

Specifications

Landa Pump

Machine

Model

EHW4-

20024C

EHW4-

30024C

EHW4-

20024F

EHW4-

30024F

Motor

Machine

Model

EHW4-

20024C

EHW4-

30024C

EHW4-

20024F

EHW4-

30024F

Model Part # Pulley

LT6036R 8.921-712.0 2AK84H 9.802-375.0

LT6036R 8.921-712.0 2BK90H 8.715-593.0

LT6036R 8.924-712.0 2AK84H 9.802-375.0

LT6036R 8.921-712.0 2BK90H 8.715-593.0

Voltage/

Size

6HP 460V/3PH/60 8.751-004.0 2AK51H 8.715-549.0 HX1-1/8" 9.802-400.0 AX34 (2) 9.802-407.0 8.724-268.0

7.5HP 460V/3PH/60 8.755-604.0 2AK50H 8.715-583.0 HX1-3/8" 9.802-401.0 BX36 (2) 8.715-697.0 8.724-268.0

5HP 575V/3PH/60 8.751-009.0 2AK44H 8.715-546.0 HX1-1/8" 9.802-400.0 AX34 (2) 9.802-407.0 8.724-268.0

7.5HP 575V/3PH/60 8.751-010.0 2AH50H 8.715-583.0 HX1-3/8" 9.802-401.0 BX36 (2) 8.715-697.0 8.724-268.0

PH/

Hertz

Part # Pulley

Pulley
Part #

Pulley

Part #

Bushing Bushing Part #

25

MM

25

MM

25

MM

25

MM

Bushing

9.802-403.0

9.802-403.0

9.802-403.0

9.802-403.0

Bushing

Part #

Size/Qty

Belt

Part # Contactor

42

Landa EHW Operator’s Manual 8.941-114.0 - M

Controls

Specifications

Machine

Model

EHW4-

20024C

EHW4-

30024C

EHW4-

20024F

EHW4-

30024F

Overload

8.724-303.0 9.802-551.0

8.724-312.0 9.802-551.0

8.724-312.0 9.803-668.0

8.724-303.0 9.803-668.0

Stepdown

Transformer

Primary Fuse

1/2 Amp

(2)

1/2 Amp

(2)

1/2 Amp

(2)

1/2 Amp

(2)

Primary Fuse

Part #

9.802-462.0

9.802-462.0

9.802-462.0

9.802-462.0

Secondary

Fuse

1/2 AMP

(1)

1/2 AMP

(1)

1/2 AMP

(1)

1/2 AMP

(1)

Secondary

Fuse

Part #

9.802-463.0

9.802-463.0

9.802-463.0

9.802-463.0

43Landa EHW Operator’s Manual 8.941-114.0 - M

®

8.941-114.0 • Printed in U.S.A.