Operation
25
Step 2. Set Up for Chemical Spray
(if desired)
Using the proper cleaning chemical for the application can speed up cleaning jobs tremendously.
Your pressure washer is equipped with a chemical injection point
on the downstream side of the
pump for introducing cleaning chemicals into the water stream. A braided chemical hose is
provided to connect at this point. Suction pressure at this connection automatically draws the
chemical solution in through the hose, mixing in 1 part chemical to 15 parts water. Adequate
suction pressure is created only when the low pressure (black) spray nozzle is used.
The introduction of cleaning chemicals via the chemical injection point affords the following
advantages:
It protects the pump from damage because no chemical passes through the pump.
CAUTION: Certain chemicals, such as bleach or those containing muriatic acid, will
cause pump damage if introduced upstream through the pump's water inlet.
It mixes the cleaning chemical into a low pressure spray. Cleaning chemicals applied under
low pressure adhere better to the surface being cleaned, allowing the formula time to react
and remove dirt more effectively.
Note: An external
chemical injector pump
is not recommended for use with this pressure washer,
and if used would obviously alter the 15-to-1 dilution ratio.
WARNING
:
Chemical spraying
Never spray acids, corrosives, or abrasive or flammable liquids. Breathing hazards, surface
burns/corrosion, or fire/explosion could result.
Follow the chemical manufacturer's label instructions for proper use and handling of the
chemical. Understand all safety hazards and first aid for all chemicals being used. Always
wear protective gloves when handling and cleaning with chemicals, and wear other
protective gear as directed by chemical manufacturer. Always dispose of hazardous fluids
per local, state, and national guidelines.
Acquire
cleaning
chemical
Use only NorthStar pressure washer chemicals or chemicals specifically
formulated for use with pressure washers.
CAUTION: Non-approved chemicals can damage pressure washer components
(seals, wand, hoses, pump, etc.) and be harmful to the environment.
Prepare for
chemical spray
(if planning to
use)
Prepare the pressure washer for chemical spraying using the following steps:
1.
Prepare (dilute) chemical cleaning solution as required for the job.
(Note: the chemical solution will be automatically mixed with the water at a
ratio of 15 parts water to 1 part chemical solution.)
2.
Press the braided chemical hose over the chemical injector on the pump.
3.
Submerge the suction strainer connected to the braided chemical hose into a
bucket containing the chemical solution.
