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Kärcher HDS3.5/20 Operator's Manual

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OPERATOR'S MANUAL
®
■ HDS3.5/20
■ HDS5.0/23
■ HDS8.0/32
To locate your local Kärcher Commercial Pressure Washer Dealer nearest you,
WARNING:
This product and accessories may contain a chemical known to the State of
California to cause cancer and birth defects or other reproductive harm.
11/02/17
For more information about this regulation: www.P65Warnings.ca.gov
■ HDS4.0/22
■ HDS4.8/30
■ HDS9.5/30
visit www.karchercommercial.com
UNE
OI
ATI
RES
ON
OU
PL
UTI
SSU
LIS
EM
AVA
NT
BLE
DE
D'
UR
SER
S.
DES
tem
ent
t)
MO
PER
ATE
T CAU
IEL
e cor
éch
rec
éan
le
DE
L'O
PEU
MA
TÉR
F".
pris
cas
sur
-
EL
NU
ATI
ON
AG
ES
"OF
à une
e (le
iqu
que
ées
utili
MA
UTI
LIS
DO
MM
pos
ition
que
e de
ssa
terr
à cha
i ind
cor
d
LIR
E LE
ISE
rs
en
éle
ctri
fuit
et
d'e
tes
rac
MA
UVA
teu
nta
tion
teu
r de
ion
isé
et
de
au
inte
rrup
lime
onc
itial
réin
isat
itial
tub
e rigi
pe
en
s les
blo
c d'a
s de
le
réin
disj
t être
t et
le
pom
N
IÓN
ttez
tou
le
Tes
tez
ure
r doi
ole
de
la
leu
se
IO
RAC
OS
1.
Me
nec
tez
terr
e.
céd
onc
teu
n,
le
pist
l'ea
pte
u.
ur
La
veil
sur
ER
AC
. LA
OPE
S O
DAÑ
2.
Con
e à
e des
la
pro
disj
ssio
cou
ler
l'int
erru
".
r est
mis
OP
RSE
ALE
à l'aid
mis
teu
r. Le
te
pre
fait
es
ttez
ition
brû
"ON
leu
rég
lez
S DE
USA
SON
do
ad-
onc
à hau
et
. Me
pos
ur
du
" et
NE
ES
DE
ES
PER
O).
de
mo
(GF
CI
y
disj
ion
.
tuy
au
à eau
em
ent
gaz
en
pte
r sur
"ON
IO
ANT
ION
ES.
AG
AD
a tier
ra
Tie
rra
icio
e a
sat
ez
tie.
le
tuy
le
de
au
ferm
t de
l'int
erru
leu
CC
RAC
IÓN
AR
LES
PIE
DAD
(AP
a a
s de
rein
ers
3.
de
Fix
sor
tez
e rigi
rob
ine
que
du
brû
RU
OPE
ASI
ON
PRO
n "OF
ect
F"
ado
Pér
did
nto
y pon
r-
Con
nec
le
tub
".
du
ent
lors
pte
ur
ge.
IN
ST
DE
L DE
OC
A
LAS
ició
nte
con
te
de
imie
icia
rse
aco
4.
Ten
ez
"ON
bou
ton
uem
l'int
erru
lue
.
net
toya
le
MA
NUA
A
PUE
la
pos
rrie
Cor
rien
pro
ced
e rein
del
tom
5.
pos
ition
z le
om
atiq
ttez
re
vou
z le
s,
ute
LEA
EL
UAD
s en
tom
aco
por
nte
los
deb
pla
dor
n
Tou
rne
e aut
u,
me
pér
me
atu
nce
F".
à 3
min
INA
DEC
rrup
tore
a un
ion
ado
) me
dia
GF
CI
al
aco
pos
ició
6.
s'al
lum
".
uffe
r l'ea
la
et
tem
com
"OF
t 2
e.
inte
ene
rgía
tor
Acc
iera
ivo.
El
illa
en
la
ND
I-
"ON
r cha
sta
t à
ent
rinc
ez.
r sur
u pen
dan
tèm
os
los
de
rrup
hub
osit
y var
llav
e.
ba
CE
da.
Pou
rmo
dét
erg
ge
:
ent
et
brû
leu
r l'ea
F".
n du
sys
IO
NS
CHI
NE.
OR
e tod
fue
nte
Inte
el
lés)
(si
o disp
, pist
ola
a la
la
bom
" (EN
enc
n "ON
ien
"
7.
le
the
ivez
net
le
dét
toya
erg
ur
du
cue
.
sur
"OF
ssio
CT
G
MA
URY
Col
ect
oqu
e la
ebe
en
Ing
en
dich
.
sión
a y
abr
tor
de
n "ON
se
ició
8.
Act
ès
le
erru
le
e éva
pte
isse
oid
pom
pe
la
pre
RU
ERA
TIN
NA
L INJ
1.
Con
ado
. Pru
as
rad
os
se
use
alta
pre
agu
de
rrup
pos
ició
ma
dor
la
pos
9.
Apr
Cou
pez
l'int
ma
chin
refr
de
r réd
la
uire
IN
ST
OP
E
SO
2.
ecu
sus
sigl
rpo
que
de
tro
e el
inte
en
la
el
dor
que
en
A.
Me
ttez
z la
bob
ine
ur
pte
t pou
IN
G
L BEF
OR
IN
E.
PER
Tes
t
por
eba
inco
a vez
ngu
era
sum
inis
oqu
de
gas
e cua
ndo
ma
ead
a.
B.
Lai
que
sse
erru
la
ole
AT
NUA
Y RES
ULT
AG
let.
ure
s
pru
eba
cad
e la
ma
de
illa.
Col
ula
ent
del
que
ra
des
C.
ps
ttez
l'int
le
pist
ER
G
MA
MA
TY
DAM
.
ed
t pro
out
ced
and
pru
gur
ngu
era
la
var
la
válv
átic
am
per
tor
atu
O).
tem
Me
ion
nez
l'ea
u.
OP
TIN
TIO
N
PER
pos
ition
gro
und
tes
res
et
-
3.
Ase
te.
e la
ma
).
trol
de
om
inte
a la
tem
rrup
ieza
.
AG
AD
se
E.
D.
Act
pez
D
OP
ERA
OP
ERA
PRO
"OF
F"
per
ly
and
et
st
be
d to
out
rien
ect
ND
IDO
de
con
erá
aut
que
el
ato
limp
F"
(AP
a que
F.
Cou
Use
go
REA
PER
in
the
to
pro
res
CI
mu
4.
Con
ete
CE
illa
end
a,
colo
a con
ost
la
n "OF
s par
O).
ION
el
ie
fue
IMP
RO
es
ply
g the
The
GF
and
wan
.
5.
Suj
" (EN
e la
to
per
r el
se
enc
agu
el
term
ced
3 min
ició
uto
AG
AD
PL
OS
don
de
roc
swi
tch
er
sup
ed)
ice.
usin
f gun
ition
t
"ON
Col
oqu
pilo
nta
aju
ste
e y
pro
ue.
la
pos
2 ó
F"
(AP
áre
EX
as
s.
ido
No
r
ce
all
t pow
equ
ipp
CI
dev
shu
t-of
wat
er.
t will
" pos
ligh
6.
DO
). El
de
cale
) y
ent
enj
uag
dor
en
a por
n "OF
a.
to
DE
O
en
mit
Util
ise
est
s
1.
Pla
nec
CI
(if
the
GF
use
.
e,
on
the
"ON
. Pilo
A
ND
IDO
det
erg
iar:
e y
que
ma
agu
ició
em
RIE
duc
SG
n per
N
nue
ide
2.
Con
GF
d on
eve
ry
re
hos
e and
turn
tch
in
ition
".
ition
and
7.
(EN
CE
da
el
limp
erg
ent
del
car
gue
la
pos
del
sist
el
pro
a sea
LO
SIO
de
liqu
pro
the
vide
with
h pre
ssu
hos
p swi
" pos
ed
"ON
" pos
Enc
ien
pué
s de
el
det
rrup
na
tor
des
ba
sión
en
y
o llam
s
ido
E D'E
XP
une
oris
er
tes
ted
hig
ply
ce
pum
b to
"ON
is
turn
"ON
8.
Des
gue
el
inte
qui
bom
la
la
pre
N G
te
onl
liqu
QU
s où
vap
Sec
ure
er
sup
Pla
kno
swi
tch
in
the
re.
g.
9.
A.
Pon
Apa
ga
la
tín.
tor
de
a aliv
iar
era
RIS
end
Ne
roit
pas
3.
let
nec
t wat
d
e con
trol
ner
swi
per
tch
atu
nin
B.
Dej
e que
ser
pen
rrup
par
agu
a.
N I
T
OF
. Op
aux
mis
e.
ES
Con
wan
valv
n bur
bur
ner
tem
d with
clea
s to
C.
ríe
el
inte
el
pist
ola
tro
de
EN
K
ION
ted
.
per
LIE
NT
as
4.
Gra
sp
n gas
ally
whe
pla
ce
des
ired
cee
.
ute
enf
Pon
ga
e la
inis
EM
RIS
PL
OS
ope
n
mit
CA
e las
áre
za.
lan
5.
Tur
om
atic
er,
t to
pro
pos
ition
min
D.
Pre
sion
el
sum
TI SS
EX
ere
is
per
ICI
ES
ent
y la
S —
6.
aut
hea
t wat
rmo
ent
sta
and
rins
e.
F"
for
2-3
E.
Cie
rre
A R
wh
tor
ch
spr
ay
PE
RF
sol
am
gat
illo
DE
par
ties
7.
To
ust
the
det
erg
and
the
"OF
wat
er
.
re.
F.
ER
or
not
.
SU
Use
as
del
S CH
AU
les
tole
ts
adj
n on
nin
erg
g:
ent
tch
in
har
ge
pos
ition
pre
ssu
/ AV
Do
ids
T
lad
ais
CE
lem
ent
e pis
8.
Tur
r clea
n off
det
ner
e to
swi
disc
F"
tem
W
N
liqu
HO
E
RFA
r seu
poi
gné
9.
Afte
Tur
chin
bur
the
"OF
eve
sys
C IO
Y—
US
SU
s des
che
CO
las
N
A.
Pla
w
ce
ma
tch
in
to
reli
AU
S
INJ
UR
N
y
CA
of
Tou
lée
iso
ces
.
EV
E
ga
con
B.
Allo
.
p swi
gun
EC
AN
TE
SE
R
K
OF
ES
e onl
CA
as
et
lan
SE
MU
ten
C.
l coil
ce
pum
e trig
ger
ply.
PR
ION
BE
RIS
AC
S —
Us
pin
g are
TO
LA
Sos
T RE
-
coo
D.
Pla
eez
er
sup
ER
AC
O
ER
DE
A-
SU
RF
grip
wa
nd.
PIS
ES
IÓN
LE
x ma
ins.
E.
Squ
wat
AL
OP
EQ
UIP
OP
R
BU
RN
ign
ed
and
LA
PR
nos
.
PIS
TO
ir à
deu
Tur
n off
. ES
NU
TE
NT
E PO
TE
UR
IL
des
gun
CK
LA
dos
ma
Ten
EE
F.
EL
MA
SE
ME
DO
S.
PE
RA
PA
ER
RE
A-
spr
ay
BA
PO
SE
IGN
IÓN
O-
O
e
LE
A
US
AR
SO
LIF
LA
ICA
DE
L'O
T AP
S OP
KS
ds.
LA
US
AC
PE
RS
anc
K
DE
AD
O
S CA
EL
ON
. CE
R
DE
N
KIC
h han
PO
NE
TR
S A
del
alc
E RIS
US
RE
MA
NU
ATI
E PA
Y GU
h bot
DE
VE
PE
fue
RA
ra
NT
E
TH
AL
DO
LE
E
UT
ILIS
UT
ILIS
S.
SP
RA
ld
wit
SG
O
S SE
nga
se
CA
ue
LIE
DU
Y RE
CE
AD
NU
LIR
NT
RE
AL
IFIE
-
Ho
SIO
RIE
nté
NE
UA
toq
s
RE
UR
'S
FO
MA
RE
AVA
ET
IT
QU
CU
.
SE
-
LE
Ma
S.
uilla
.
DE
AG
a a
No
otra
ir
TO
INJ
OR
BE
CH
INE
TEU
DO
RS
S OJ
OS
ipo
E
N
OR
ON
S.
NA
de
boq
AR
GA
ES
ION
agu
Se
ten
OF
ER
AT
LLY
MA
LY
BY
S.
LO
est
e equ
CU
RIT
TIO
RS
SC
A
PR
del
S.
A
OP
RE
FU
. TH
IS
ON
AT
OR
EJA
SE
re
SE
EE
are
S
il.
INJ
Y TO
EC
PE
.
o
A
DE
ALT
ja
el
SU
RE
SIO
N
CA
ING
US
ED
OP
ER
PR
OT
se
ope
S DE
PO
RT
app
OF
UR
zle
UID
—D
ni
diri
as.
ES
BL
PR
ES
le
jet
US
BE
ED
AN
DO
NE
TTE
RE
rez
cet
RIS
K
INJ
of
noz
FL
rge
per
son
E DE
es.
US
diri
ger
TO
AL
IFI
S LU
NT
s ope
ET
VE
RE
cle
ar
AR
GE
dis
cha
RIS
QU
bus
DE
SO
pas
nes
.
QU
Y—
DO
DE
IVE
vou
Ke
ep
CH
dire
ct
loin
des
CH
AU
IE
Ne
per
son
INJ
UR
E EY
E-
HIN
G
lors
que
el
T DIS
or
son
s.
EA
U
s des
RT
N
K
OF
TIV
OT
IA.
ven
Use
ti-
HO
tou
at
ch
per
LA
SO
ver
IO
RIS
EC
D
CL
RN
.
AS
FIX
a de
r
not
am
d'e
au
PL
OS
des
PR
OT
AN
WO
this
DE
O
un
are
. Util
ise
stre
EX
il y
a
ètr
e.
WE
AR
BE
rat
ing
SG
en
to
cua
da.
XIE
é.
D'
s où
i-m
s
MU
ST
ope
RIE
pro
duc
ade
SP
HY
n aér
U
OU
roit
dem
r de
car
wh
en
ne.
lac
ión
E D'A
roit
bie
y to
-
FE
end
ans
un
eil
pou
t sur
er
ma
chi
e
s un
QU
end
ct
onl
con
DE
aux
ded
par
pla
nch
len
ele
z
. Us
dan
RIS
nne
ep
. Ke
all
ep
UE
chi
ne
nch
er)
de
l'ap
s du
ccu
, app
mu
i ne
OF
ION
ti-
. Co
let.
Ke
und
and
l
SQ
ma
pla
our
urs
prè
r et
s'a
gaz
cel
ui-c
.
RIS
K
YX
ll ven
IAT
UT
ION
out
gro
ing
ctr
ica
RI
er
ce
e les
aut
ode
l'ai
ur
. Si
de
end
ies
pap
e
AS
y in
PH
we
K
OF
OC
und
off
ed
the
ica
l wir
m
ele
ins
tall
(m
êm
les
que
ode
gaz
inc
sou
ée
ou
onl
d are
a.
RIS
EC
TR
gro
and
ele
ctr
t fro
pas
tibl
es
age
,
s lou
ez
rds
une
ur
ent
de
des
rne
r la
onc
r ou
.
late
la
EL
per
ly
s dry
m
nec
.
-
Co
do.
N
Ne
bus
lum
gaz
t plu
.
ect
rni
sse
em
tou
e enf
Fo
rce
los
ion
nec
te
es
de
pro
tion
ay
fro
Dis
con
ing
cua
OS
com
nt
rs
l'al
de
son
s dét
fou
dép
art
r ou
peu
t êtr
exp
le
en
. De
sco
ca
ant
nec
ay
aw
ent
s.
ser
vic
UC
IÓN
ade
to
sec
as
es
PL
Ava
teu
s gaz
Si
vou
vot
re
r le
r pou
e ne
sse
cie
n
une
er.
trô
cos
elé
ctri
spr
pon
ore
TR
OC
con
tac
cio
nes
ent
EX
iste
nte
sen
tain
er.
me
t, app
nt
ele
s pou
pap
hni
feu
de
ou
con
llum
erg
ée
i.
elé
ctri
te
o.
N
c
com
ply
bef
EL
e en
EC
un
nec
com
pon
IO
O
o res
.
a
cer
pla
nch
e join
ate
util
la
sou
r un
tec
un
pap
e
réa
imm
ui-c
cor
rien
ser
vici
CU
TIO
es
.
ave
sup
O
DE
huf
las
con
roc
ie
ND
pis
imo
o par
o,
le
imm
édi
t êtr
r d'o
. Si
ele
t cau
ser
sou
nt
de
a été
ter
cel
.0
dar
QU
E
RO
pris
lem
ent
-
SG
el
enc
tod
as
lo.
No
CE
re
un
18"
min
rat
. Si
pis
peu
util
du
ise
gaz
in,
r peu
app
r la
s ava
par
tie
pec
990
RIS
LE
lier
CT
à des
e seu
t être
r
sus
nec
RIE
nga
te
sue
IN
do
sob
e de
del
apa
ca
aire
del
de
pas
le
trô
ma
la
are
tou
rne
5 min
ute
si une
r ins
8.9
00-
D'E
Re
la
doi
terr
ven
s et
étre
jete
Ma
nte
ba
del
DE
tala
o libr
or
r cer
el
dor
os.
Ne
de
con
e à
rép
tein
t,
re
nt
n pou
mis
s les
e à
sec
ais
pro
-
s.
y arri
ES
GO
ins
aci
alre
ded
isa
s que
pro
vee
ber
.
tou
rné
r de
s'é
end
ipe
me
hni
cie
Tou
nus
. No
jam
com
ctri
que
RI
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98015080-1
■ HDS3.9/30
■ HDS6.3/32
9.801-509.0 - C

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  Also See for Kärcher HDS3.5/20

  Summary of Contents for Kärcher HDS3.5/20

  • Page 1 5 this itio ter. air. 98015080-1 ® ■ HDS3.5/20 ■ HDS4.0/22 ■ HDS3.9/30 ■ HDS5.0/23 ■ HDS4.8/30 ■ HDS6.3/32 ■ HDS8.0/32 ■ HDS9.5/30 To locate your local Kärcher Commercial Pressure Washer Dealer nearest you, visit www.karchercommercial.com...
  • Page 2: Identifi Cation Of Operational Label Symbols

    When the light is on, it means there is power to the pilot control. If there is no light, see troubleshooting guide. Motor Overload When the light is on, it means the overload is tripped. Reset overload. Not all machines have all symbols 9.801-509.0 - C • Karcher Operator's Manual...
  • Page 3: Table Of Contents

    Applying Detergent & General Washing Techniques Shutting Down & Cleanup Storage Troubleshooting 21-24 Maintenance & Service Heating Coils Propane Gas Burner Features 26-27 Basic Facts and Equivalents Equivalents and Oil Change Preventive Maintenance 9.801-509.0 - C • Karcher Operator's Manual...
  • Page 4: Introduction & Safety Information

    4. Use only your hand to push in or turn the gas control knob. Never use a tool. If the knob will not push in or turn by hand, don't try to repair it; call a qualifi ed service technician. 9.801-509.0 - C • Karcher Operator's Manual...
  • Page 5: Important Safety Information

    Use caution when op- be unburned gas present. erating. Do not direct discharge stream at people, or severe RISK OF INJECTION OR SEVERE INJURY injury or death will result. TO PERSONS. KEEP CLEAR OF NOZZLE. 9.801-509.0 - C • Karcher Operator's Manual...
  • Page 6 4 7 0 ° F (243°C) are not suitable for connection to Type B gas vents. Example of Down Draft Diverter for Gas Fired Machines Follow the maintenance instructions specifi ed in the manual. 9.801-509.0 - C • Karcher Operator's Manual...
  • Page 7: Component Identifi Cation-All Models

    fl oor. This sys tem pre vents internal High Pressure Hose — Connect one end to water pump dam age. pump high pressure discharge nipple and the other end to spray gun. 9.801-509.0 - C • Karcher Operator's Manual...
  • Page 8: Installation Hds 3.5/20, 4.0/22, 3.9/30, 5.0/23, 4.8/30

    Out 22mm Screw Connection Inlet Electrical Connection 24.87" Water In 3/4" GHF 3.70" 24.00" 49.00" NOTE: Draft diverter should be installed 3 ft. above exhaust outlet. Floor Mounting Dimensions 21.30" 98015080-3 20.61" 20.61" 9.801-509.0 - C • Karcher Operator's Manual...
  • Page 9 Out 22mm 61.00" Screw Connection Inlet Electrical Connection 26.18" Water In 3/4" GHF 3.64" 64.00" NOTE: Draft diverter should be installed 3 ft. above exhaust outlet. Floor Mounting Dimensions 31.77" 98015080-4 26.91" 26.91" 9.801-509.0 - C • Karcher Operator's Manual...
  • Page 10: Installation

    All gas piping shall be approved and installed in accordance with the Maximum capacity of pipe in cubic feet/hr of natural gas Uniform Mechanical Code. (Multiply values by 1000 to get nominal BTU/hr capacity. 9.801-509.0 - C • Karcher Operator's Manual...
  • Page 11 Stop fi lling when liquid appears at the fi xed level gauge. Vents penetrating ceilings or walls should be double- Bleed off excess propane in a safe area. Most LP-gas wall approved appliance vents and should be one to 9.801-509.0 - C • Karcher Operator's Manual...
  • Page 12: Water Source

    Attach the wand into the spray gun using tefl on tape pressure washer coil. A draft diverter helps improve on the pipe threads to avoid leaks. draft into the stack without pulling more air through the 9.801-509.0 - C • Karcher Operator's Manual...
  • Page 13 Excess Air is between 20-30% and/or % Oxygen is below shows data included in the operator’s manual 4-5%. for fl ue and stack sizes and gas manifold pressure settings. These sizes are critical for achieving proper combustion and acceptable emissions. 9.801-509.0 - C • Karcher Operator's Manual...
  • Page 14 In Canada, gas conversion shall be carried out in accordance with requirements of the Provincial Authorities having jurisdiction and in accordance with the requirements of the CAN/ GGA-B149.1 and .2 installation code. 9.801-509.0 - C • Karcher Operator's Manual...
  • Page 15 13. Leak test with a soap solution after installation or ser vice with the main burner on. Coat pipe and tub ing joints, gaskets, etc. 9.801-509.0 - C • Karcher Operator's Manual...
  • Page 16 Have gas lines been checked with local codes? Have all operators using this machine been instructed properly and have they read the manual? Has the machine been installed according to operator's manual instructions? 9.801-509.0 - C • Karcher Operator's Manual...
  • Page 17: Assembly Instructions

    CAUTION: Do not run the pump machine allowing water to run from picture. without wa ter or pump damage the end of the wand until clear. Turn will result. off machine. 9.801-509.0 - C • Karcher Operator's Manual...
  • Page 18: Operating Instructions

    Tu r n t h e wa t e r o f f. P r o t e c t from freezing. High Pressure Nozzle Trigger 98016360-17 NOTE: High pressure nozzle must be attached at end of wand to obtain high pressure. To apply soap, see page 19. 9.801-509.0 - C • Karcher Operator's Manual...
  • Page 19: Applying Detergent & General Washing Techniques

    These chemicals will harm the machine and will the pump. dam age the surface being cleaned. RINSING Turn detergent valve clockwise to close. Operate pres sure washer and allow a few sec onds for the de ter gent to clear. 9.801-509.0 - C • Karcher Operator's Manual...
  • Page 20: Shutting Down & Cleanup

    Turn pump off immediately. 4. Do not allow high pres sure hose to become kinked. 5. Store the machine and accessories in a room which does not reach freezing tem per a tures. 9.801-509.0 - C • Karcher Operator's Manual...
  • Page 21: Troubleshooting

    Check water supply and connections on NOISY suction line. Broken or weak inlet or discharge valve Check and replace if necessary. springs Excessive matter in valves Check and clean if necessary. Worn bearings Check and replace if necessary. 9.801-509.0 - C • Karcher Operator's Manual...
  • Page 22 Specify BTU, building gas pressure 11 w.c.i. to machine for correct sizing of regulator. Low gas pressure Increase gas pressure Soot buildup on coils not allowing heat Clean coils. transfer Improper burner nozzle See serial plate. 9.801-509.0 - C • Karcher Operator's Manual...
  • Page 23 4. If you do not have continuity through wire and the ignitor/sensor, check for a loose wire connection in the wire. Repair as needed. 5. Check to see if spark shorts to burner ring through a cut in the ignitor wire. 9.801-509.0 - C • Karcher Operator's Manual...
  • Page 24 If you read 24V accross the switch terminals the limit switch is open. Replace the limit switch. A pilot fl ame set too high will also cause burner to short cycle. Pilot fl ame lifts over ignitor/sensor. 9.801-509.0 - C • Karcher Operator's Manual...
  • Page 25: Heating Coils

    High Limit Hot Wa ter Thermostat: fresh water. Reinstall wand assembly to spray gun. For safety, each machine is equipped with a high limit con trol switch. In the event the temperature of the wa ter 9.801-509.0 - C • Karcher Operator's Manual...
  • Page 26: Maintenance & Service

    Hence, adequate fl oor valve. Disconnect union in main burner line below space and good ventilation are especially important thermostat. Slide burner manifold out through shell with propane systems. opening. 9.801-509.0 - C • Karcher Operator's Manual...
  • Page 27 2. Remove regulator adjustment screw cap (see Figure 5, page 23). 3. With small screwdriver, rotate adjustment screw clockwise to increase, or counterclockwise to decrease pressure. 4. Replace regulator adjustment screw cap. 9.801-509.0 - C • Karcher Operator's Manual...
  • Page 28: Basic Facts And Equivalents

    Cost of Gas per Therm = Cost to Run Example Using Natural Gas at 50¢ 400,000 BTU Machine Therm: 400 Cu. Ft. (400,000 / 1,000) 4 x 50¢ = $2.00 / Hour to Run ((400 / 100) x cost of gas) 9.801-509.0 - C • Karcher Operator's Manual...
  • Page 29: Equivalents And Oil Change

    27.71" Water Column 1 lb./sq. in. 14.73 lbs./sq.in 1" Mercury .39 lb./sq. in 1 Std. Atmosphere 14.73 lbs./sq. in. OIL CHANGE RECORD Date Oil Changed Month/ Estimated Operating Hours Day/Year Since Last Oil Change 9.801-509.0 - C • Karcher Operator's Manual...
  • Page 30: Preventative Maintenance

    Clean Water and Chemical Screen/Filter Weekly Clean Float/Supply Tank Every 6 months Replace HP Hose If there is any sign of wear Grease Motor Every 10,000 hours Check Burner Pilot Jets Annually Pressure Relief Valve Annually 9.801-509.0 - C • Karcher Operator's Manual...
  • Page 32 HDS • 9.801-509.0 • Printed in U.S.A.