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3.6.3 CALIBRATION
To determine the exact amount of additive going into the water, the system must be calibrated. Follow this
procedure to calibrate the system:
1. Fill a calibrated container with the additive.
2. Connect the plastic line to the injector valve and insert the free end into the additive.
3. Close the injector valve.
4. Start the pump, select the low-pressure nozzle (max 500 PSI or 3400 kPa).
5. Depress the trigger on the spray gun to start the flow of water.
6. Open the injector valve to start the flow of additive.
7. When the additive fills the line and starts to come out of the nozzle, release the trigger and stop
spraying.
8. Note exactly how much additive remains in the calibrated container.
9. Place the nozzle into a pail and spray until a known amount of water fills the pail.
10. Stop spraying and note the amount of additive remaining.
11. Subtract the additive in step 10 from that in step 8 to determine the amount used.
12. This amount divided by the amount of water in the pail will give you the exact ratio of additive to water.
13. Recalibrate if the rate is reset.
14. Do not touch the injector valve if you wish to keep this rate of application.
15. Recalibrate if a different additive is used.
NOTE:
Do not mix units when calibrating. Always use ounces, quarts or liters for both measurements.
3.6.4 STARTING/STOPPING
To start or stop the pressure washer, follow this procedure:
1. Starting
a) Review pre-operation checklist.
b) Make sure that water is available to the pump by turning on water from the garden hose line.
c) Check the oil level in the pump.
d) Move the motor switch to the ON position to start the motor.
IMPORTANT!
If starting the unit for the first time or after a long storage period, hold the spray gun trigger in its
depressed position to allow the pump to prime itself. Release the trigger when the water leaves the nozzle in a
steady stream.
