Landa WATER JET SYSTEM Operator's Manual - Water Jet System
8
WATER JET SYSTEM
INSTRUCTION MANUAL AND PARTS LIST
WATER JET SYSTEM Manual • #8.913-945.0 • Rev. 9/11
NOZZLE CHART
Correct nozzle size is important for optimum cleaning efficiency. Water Jet is shipped with two #3, 15° nozzles in rotary
swivel, and one #6, 40° nozzle in shut-off gun. Review correct nozzle size for your pressure washer. See chart below
for correct nozzle size. To obtain the correct nozzle size in the rotary swivel, divide the minimum nozzle size for the
pressure by two. Round this figure up to the nearest half nozzle size. These are the 1/8" nozzles only (two needed) for
the rotary swivel on the Water Jet.
TROUBLESHOOTING
PROBLEM
POSSIBLE CAUSE
SOLUTION
QUICK COUPLER LEAKS
Worn O-Ring
Replace O-Ring (Part #2-0121).
SPRAY GUN(S) LEAK
Foreign matter between valve seat
and ball
Remove foreign matter. Replace with
Repair Kit (Part #81-21227).
PRESSURE WASHER
UNLOADER CYCLES
High pressure filter or wrong sized
nozzles for attached pressure washer
Remove and clean out filter, nozzle(s).
Check nozzle size.
NOZZLES SPINNING TOO
SLOW
Not enough water volume for
attached pressure washer to rotate
nozzles
Need a larger gpm pressure washer.
NOT CLEANING SURFACE
Height adjustment too high or
pressure washer too small for job
Lower adjustment knob or attach to
larger pressure washer.
ROTATING NOZZLE ARM NOT
SPINNING, BEARING NOISE
Pressure washer too small or
bearing low on grease
Get larger gpm pressure washer or
grease bearing.
Nozzle
Size
Orifice
diam.
(in.)
40
PSI
100
PSI
250
PSI
500
PSI
600
PSI
700
PSI
800
PSI
1000
PSI
1200
PSI
1500
PSI
2000
PSI
2500
PSI
3000
PSI
3500
PSI
4000
PSI
2
.034
.20
.32
.50
.71
.77
.80
.89
1.0
1.1
1.2
1.4
1.6
1.7
1.9
2.0
3
.042
.30
.47
.75 1.07 1.16
1.25 1.34
1.5
1.6
1.8
2.1
2.4
2.6
2.8
3.0
4
.052
.40
.63 1.00 1.40 1.60
1.70 1.80
2.0
2.2
2.5
2.8
3.1
3.5
3.8
4.0
4.5
.055
.45
.71 1.10 1.50 1.70
1.90 2.00
2.2
2.4
2.8
3.0
3.6
3.9
4.3
5.0
5
.057
.50
.79 1.30 1.80 1.90
2.10 2.20
2.5
2.8
3.1
3.6
4.0
4.4
4.7
5.0
5.5
.06
.55
.87 1.40 1.90 2.10
2.30 2.50
2.8
3
3.4
3.8
4.4
4.8
5.2
5.5
6
.062
.60
.95 1.50 2.10 2.30
2.50 2.70
3.0
3.2
3.7
4.2
4.8
5.2
5.7
6.0
6.5
.064
.65 1.00 1.70 2.30 2.50
2.70 2.90
3.3
3.6
4.0
4.6
5.2
5.7
6.0
7
.067
.70 1.10 1.80 2.50 2.70
2.90 3.10
3.5
3.8
4.3
5.0
5.6
7.5
.07
.75 1.20 1.90 2.70 2.90
3.20 3.40
3.8
4.1
4.6
5.3
6.0
8
.072
.80 1.30 2.00 2.80 3.10
3.40 3.60
4.0
4.4
5.0
5.6
8.5
.074
.85 1.30 2.20 3.00 3.30
3.60 3.80
4.3
4.6
5.3
6.0
9
.076
.90 1.40 2.30 3.20 3.50
3.80 4.00
4.5
5.0
5.5
9.5
.078
.95 1.50 2.40 3.40 3.70
4.00 4.30
4.8
532
5.8
10
.08
1.00 1.60 2.50 3.50 3.90
4.20 4.50
5.0
5.4
12
.087
1.20 1.90 3.00 4.20 4.60
5.00 5.40
6.0
15
.094
1.50 2.40 3.80 5.30 5.80
20
.109
2.00 3.20 5.00
30
.141
3.00 4.70
40
.156
4.00