During
Operation
Nozzles
Chemical
injector use.
Calibration
Hoses and
couplers
The pressure was set at the factory during the testing procedure, no adjustments to the machine should
be required for operation.
During operation do not leave the machine running for more than 2 min-
utes without the trigger gun being pulled. Although your machine has a by-pass valve on it and
may have a thermal relief system, this can cause extensive pump damage. If machine will not be
discharging water for more than 2 minutes, shut the machine off.
Your machine is supplied with interchangeable spray tips. The black tip lowers your pressure and draws
chemical. The other tips are for high pressure rinse at different spray angles. Red is 0 degree, yellow
is 15 degree, green is 25 degree and white is 40 degree. The yellow tip is used for most standard appli-
cations. Be sure the quick coupler is fully engaged before pulling the trigger gun. Failure to do may
result in the tip becoming a projectile and may be lost or damage to property or persons may occur.
Your pressure washer is supplied with a downstream chemical injector with dual chemical selector. The
1/4” clear vinyl tube is to be inserted into the desired chemical to apply. Be sure to use the black, low
pressure nozzle to inject chemical. The chemical injector will only open up and allow chemical into the
line when this tip is used. This tip enables the pressure to drop to approximately 250 PSI to draw
chemical. The injector can be turned on and off or the rate of injection can also be set by turning the
knob that the clear vinyl tube attaches to. See calibration below.
Be sure to flush injection system with clear water after use.
The chart below is an average ratio observed using water as the test fluid to draw through the injector
and serves only as a guide, your actual ratio will vary.
Setting on valve
Injection Ratio
9
6:1
8
8:1
7
10:1
6
13:1
5
20:1
4
28:1
3
35:1
2
50:1
For better accuracy, calibrate using the following formula:
(GPM x 128)
÷
(ounces drawn in 1 minute) = x:1.
IE: If a 2.0 GPM machine draws 8 ounces of chemical in 1 minute: (2 x 128)
8 = 32:1
Factory supplied hoses are sized in length and diameter for best operational performance and sized
within the pressure capabilities. Additional hose added to the machine may change the performance of
the machine. Consult factory if you have any questions. When replacing or disconnecting the quick cou-
plers be sure the machine is shut off and relieve the pressure from all hoses.
