Prime The Water Supply; Set Up For Chemical Spray (If Desired) - North Star 1572041 Owner's Manual

Prime the Water Supply

Turn on water supply and squeeze the
trigger
CAUTION: Water Pressure
Never run the pump without the water supply
connected and turned on. Operating the pressure
washer without a sufficient incoming flow of water
will damage the pump.
 Turn on the water supply. Make sure the water
supply is steady and flowing at a rate 20% over the
rated flow of your pump. (Reference the flow rate
table under the Connect Hoses, Water Supply, and
Nozzle" section).
 Purge air from the water supply hose by squeezing
the trigger until a steady stream of water flows out of
the nozzle at low pressure. (Air in the hoses can
cause damage to the pump, so always make sure all
the air is out of the hoses before starting the
pressure washer engine.)
Make sure the water supply hose is not kinked. A

kinked hose will provide insufficient water supply to
the pump and reduce its life. Make sure the hose
remains unkinked after moving the pressure washer.

Set Up for Chemical Spray (if desired)

Prepare for Chemical Spray (if planning to
use)
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.
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 upstream chemical injector is not

recommended for use with this pressure washer,
and if used would obviously alter the 15-to-1 dilution
ratio and may cause pump damage.
CAUTION: Chemicals Containing Muriatic
Acid
Certain chemicals, such as bleach or those containing
muriatic acid, will cause pump damage if introduced
upstream through the pump's water inlet and will void
warranty.
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 approved pressure washer chemicals
designed for high-pressure use. Use soap adjustment
knob to regulate cleaning power (on select units).
CAUTION: Non-approved Chemicals
Non-approved chemicals can damage pressure
washer components (seals, wand, hoses, pump, etc.)
and be harmful to the environment and will void
warranty.
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.
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