North Star 157145 User manual

1
M157145A.1
Owner’s Manual
Instructions for Assembly, Testing, Operation, Servicing, and Storage
Bleach Pump with Motor Armor: For use with bleach**
WARNING
READ and UNDERSTAND the Owner’s Manual completely before using this pump.
Assemble, test, and use only in accordance with the Owner’s Manual instructions.
EXERCISE CAUTION when mixing chemicals, as incorrect ratios or mixtures could
release harmful gases.
READ and FOLLOW chemical safety instructions.
KNOW emergency procedures BEFORE handling chemicals. Pump leaks, bodily chemical
contact, poisoning, and spills require immediate response.
AVOID inhaling, ingesting, or coming into contact with any chemicals.
WEAR personal protective gear when operating, cleaning, and servicing the pump.
KEEP pump and spray materials away from children and pets. Some chemicals are
especially toxic to them.
DO NOT TURN ON POWER to pump until ready to spray in order to avoid unintentional
spray release.
SOAK vegetation well in the area surrounding the work zone prior to and after spraying
bleach. Bleach can kill vegetation if not soaked thoroughly.
ALWAYS keep a fire extinguisher rated “ABC” nearby.
Improper use of the pump or handling of chemicals could result in serious injury, illness
to the operator or nearby persons/animals, or could cause damage to the environment.
**This pump is recommended for use in spraying bleach. The pump will be damaged, and warranty
voided if used to apply any petroleum-based product (gasoline, diesel, kerosene, or oil). The pump
should not be used to transfer any product intended for human consumption. WE RECOMMEND
THAT THE PUMP NOT BE USED FOR OTHER PURPOSES ONCE IT HAS BEEN USED FOR
SPRAYING BLEACH. Any chemical will leave some residual in the pump components, even after
the pump has been properly cleaned. These residual chemicals can have unexpected effects on future
uses. This pump should not be used by people with reduced physical, sensory, or mental capabilities
or by those who lack experience or knowledge of product use.
Any Questions, Comments, Problems, or Parts Orders
Call NorthStar Product Support at 1-800-270-0810
ITEM NUMBER: 157145, 157147,
157153
SERIAL NUMBER: __________

Hazard Signal Word Definitions
2

Table of Contents
3
Intended Use .................................................................................................................................... 4
Summary of Important Safety Information....................................................................................5
During Assembly
During Operation
•General Chemical Safety
•Chemical Applicator Safety
•Chemical Accident Procedures
Warning Label Location ..................................................................................................................7
Installation
Step One: Mounting.....................................................................................................................8
Step Two: Plumbing ....................................................................................................................8
Step Three: Connect pump to vehicle battery ..............................................................................9
Step Four: Check and test completed assembly .........................................................................11
Features...........................................................................................................................................12
Operation
Important Safety Information - Operation............................................................................13
•General Chemical Safety
•Chemical Applicator Safety
•Chemical Accident Procedures
Preparing the Pump for Each Use..........................................................................................17
Using the Pump
Step One: Assess wind conditions and clear work area.......................................................18
Step Two: Operate the pump ..............................................................................................18
Step Three: Clean pump and decontaminate after use.........................................................22
Storage.............................................................................................................................................23
Preparing for storage
Removing from storage
Troubleshooting..............................................................................................................................24
Maintenance....................................................................................................................................26
Specifications...................................................................................................................................27
Accessories.......................................................................................................................................28
Exploded Views...............................................................................................................................29
Limited Warranty...........................................................................................................................31

Intended Use
4
The pump is intended for use in spraying bleach concentrations of 3% or less.
SPRAYING CHEMICALS:
Hazardous chemicals must be handled with caution as directed throughout this manual
and on the chemical label.
The pump is intended for use in spraying chemical in liquid form only. The pump is NOT
intended for use in spraying chemicals in dry or aerosolized form, or for use with
fumigants.
Always flush the pump after each use to clean out the chemical. The life of the pump will
be shortened if it is not flushed after each use.
WE RECOMMEND THAT THE PUMP NOT BE USED FOR OTHER
PURPOSES. Any chemical will leave some residual in the pump components, even after
the pump has been properly cleaned. These residual chemicals can have unexpected
effects on future uses.
NOTE: The pump will be damaged, and warranty voided if used to apply any petroleum-
based product (gasoline, diesel, kerosene, or oil).
NOTICE: Not for use on painted wood surfaces. Use only on hard, non-porous surfaces.
Contact NorthStar Product Support at 1-800-270-0810 for any questions
about the appropriate use of the pump and/or optional accessories.

Summary of Important Information
5
WARNING
Read and understand this owner’s manual completely before using the pump. Read each
chemical label’s instructions before handling the chemical.
Improper use of the pump or handling of chemicals could result in serious injury or illness
for the operator or nearby persons/animals, or cause damage to the environment.
LISTED BELOW is a summary of safety information of particular importance. See individual
sections of this owner’s manual for more details.
------------------------------------ DURING ASSEMBLY-------------------------------
•EXERCISE CAUTION when attaching a remote switch to battery terminals. Follow the steps
listed in the Assembly section of this manual in exact sequence when connecting the pump to battery
terminals. Caution must be exercised to avoid contact with battery acid and to prevent sparking.
•CHECK and TEST completed assembly as directed in this manual. Serious injury could result from
chemical leaks if pump is improperly assembled.
•DO NOT MODIFY pump design.
------------------------------------DURING OPERATION------------------------------
General Chemical Safety
•READ and FOLLOW each chemical label’s instructions and warnings.
•AVOID inhaling, ingesting, or coming into contact with any chemicals.
•KNOW applicable licensing and regulatory requirements for the chemical you plan to use.
•KNOW emergency procedures before handling chemicals. Carefully review the Chemical
Accident Procedures section listed below and later in this manual. Also see First Aid instructions on
the chemical label.
•WEAR protective clothing, eye protection, and chemical resistant gloves when operating the
pump. Wear additional protective gear, such as facemask or apron, as recommended on the chemical
label.
•EXERCISE EXTRA CAUTION around children and pets. Some chemicals are especially toxic to
them. Keep pump and spray materials away from them at all times.
•DO NOT MIX OR POUR chemicals in an enclosed, unventilated area.
•DO NOT USE flammable chemicals in the pump.
•STORE chemicals in a correctly labeled container and in a secure location.
•MONITOR the health of operators frequently exposed to chemical, as recommended by the
chemical label or local/federal regulations.
Chemical Application Safety
Before Spraying
•SOAK vegetation in the area surrounding the work zone prior to spraying bleach. Bleach can
kill vegetation if not soaked thoroughly.
•INSPECT and PREPARE pump before each use as directed in this manual.
•DO NOT TURN ON POWER to pump until ready to spray in order to avoid unintentional spray
release.
•DO NOT SPRAY when wind speed exceeds 5 MPH in order to minimize spray drift.
•CLEAR work area of people/pets and POST warning notices to restrict access for the period
recommended on chemical label.
•KEEP pump and spray materials away from children/pets. Some chemicals can be especially toxic
to children and animals.
•DO NOT ALLOW anyone younger than 16 to operate the pump since some chemicals are
especially toxic to children.

Summary of Important Information
6
During Spraying
•DO NOT OVER-APPLY chemicals. Apply at rate recommended by chemical manufacturer. Excess
chemicals can be dangerous to humans/animals, damage desirable plants, and contaminate soil and water
sources.
•DO NOT EAT, DRINK, SMOKE, RUB YOUR EYES, or TOUCH YOUR BARE SKIN while handling
chemicals and spraying.
•NEVER POINT A SPRAY GUN at people or animals.
•EXERCISE EXTRA CAUTION when spraying near areas accessible to children and pets.
•CLEAN up spills immediately per instructions on the chemical labels.
•TURN OFF power to pump and RELIEVE system pressure before leaving pump unattended.
•SEE the Troubleshooting section of this manual before attempting any repairs. Wear personal protective
equipment and follow safety instructions.
After Spraying
•SOAK vegetation in the area surrounding the work zone after spraying bleach. Bleach can kill vegetation if
not soaked thoroughly.
•CLEAN pump immediately after use according to the directions provided in this manual.
•DECONTAMINATE yourself after you are done spraying and have cleaned the pump. Wash all exposed
areas of the body with soap and water and remove and launder clothing.
•DISPOSE OF or STORE remaining chemicals in secure storage with correctly marked container.
Chemical accident procedures
Immediate response is necessary in the event of pump leaks, bodily chemical contact, poisoning, or spills. See
instructions below:
Pump leak
If the pump develops a leak, immediately stop spraying. Turn off power to the pump and
follow directions below, as applicable.
Bodily
chemical
contact
Personal contamination can occur when chemicals splash, spill, or spray directly onto a
person.
1. Immediately follow First Aid instructions on chemical labels.
General procedures for contact with bleach or surfactant includes:
a) Eyes –immediately rinse with water for 15 minutes. If irritation persists, contact
a doctor.
b) Skin –rinse all contaminated skin surfaces with water. If irritation persists,
contact a doctor.
c) Clothing –remove contaminated clothing. Dispose of heavily contaminated
clothing per chemical label instructions.
2. Seek medical advice if instructed on the label or the victim experiences symptoms of
harmful effects. Have the chemical label available for reference.
Poisoning by
ingestion or
inhalation
In case of poisoning from ingestion or inhalation:
If the victim has collapsed or is not breathing, call 911. Otherwise:
1. If you are the victim, immediately seek assistance from nearby personnel because you may
become incapacitated.
2. Immediately follow first aid instructions on chemical label.
General procedures for ingestion or inhalation of bleach or surfactant include:
a)For ingestion: Drink a glass of water. Call a doctor or poison control center. DO
NOT induce vomiting unless instructed to do so by a doctor or poison control
center.
b) For inhalation: Immediately move to fresh air.
3. Call a poison control center for further advice. In the U.S., call 1-800-222-1222. Have the
chemical label available for reference.
Chemical spills
Chemical spills must be quickly contained and properly cleaned up.
Refer to the chemical label for any specific clean-up instructions.
General procedures include:
1. Controlling the spill by stopping the source of the spill.
2. Containing the spill so that it does not spread and get into water sources.
3. Cleaning up the spill immediately.
4. Seeking additional advice from:
- Chemical manufacturer. See chemical label for contact information.
- State pesticide regulatory agency. In the U.S., call the National Pesticide Information
Center at 800-858-7378 for assistance in contacting your state’s agency.

Warning Label Location
7
Always make sure safety labels are in place and in good condition. If a safety label is
missing or not legible, order new labels or unsafe operation could result.
To order replacement safety labels, call NorthStar Product Support at 1-800-270-0810.
Part#
Description
Model
793288
Pump warning decal
All

Installation
8
Step One: Mounting
•This NorthStar pump is self-priming.
•The pump should be located in an area that is dry and provides adequate ventilation.
•The pump may be mounted in any horizontal position. DO NOT mount pump vertically, doing so
will prevent the Motor Armor system from operating correctly.
•Secure the rubber base with #10 fasteners. DO NOT compress the base, as doing so will reduce
the ability to isolate vibration and noise. Note: Fasteners are not included.
Step Two: Plumbing
•See table below for port size and recommended hose sizes.
oRemove shipping plugs from pump ports.
oUse NorthStar quick connect fittings to connect flexible high-pressure tubing to the quick
connect ported pumps.
oTo insert quick connect fittings, lubricate O-ring with water and twist fitting while inserting
into pump port.
Pump model
Ports
Minimum inlet hose size
Minimum outlet hose size
157145
3/4" Quick Connect
1/2" (13mm) Inside diameter
3/8" (9.5mm) Inside diameter
157147
3/4" Quick Connect
1/2" (13mm) Inside diameter
1/2" (13mm) Inside diameter
157153
3/4" Quick Connect
1/2" (13mm) Inside diameter
1/2" (13mm) Inside diameter
•Tubing should be compatible with the spraying fluid. At least 18" [450mm] length is suggested to
minimize stress on the fitting/ports and reduce noise. Allow for the shortest possible tubing route
and avoid sharp bends that may kink over time.
•Installation of a 50-mesh strainer is recommended to prevent foreign debris from entering the
system. Failures due to foreign debris are not covered under the warranty.
NOTE: Restrictions on the inlet may cause a loss in performance. Inlet pressure must not exceed 30 psi [2.1
bar]
•If a check valve is installed in the plumbing, it must have a cracking pressure of no more than 2
psi [.14 bar].
CAUTION
DO NOT locate the motor near low temperature plastics or combustible material. The surface
temperature of the motor may exceed 250°F [121°C].
Correct orientation
Incorrect orientation

Installation (continued)
9
Step Three: Connect pump to battery or 12V DC supply.
WARNING
•Batteries are hazardous because they contain caustic acid, can emit explosive gases, and can
cause electric shock.
•Caution must be exercised when making connections to a battery to avoid shock and contact
with the acid, and to prevent any sparking that could lead to an explosion.
•ALWAYS follow the safety instructions and steps listed below in exact sequence when
connecting the pump to the battery terminals.
1. Preparatory
safety
Preparatory safety steps:
•ALWAYS use eye protection.
•NEVER smoke or work near sparks or other sources of ignition.
•NEVER touch both battery terminals at the same time or with any
non-insulated tools.
•If battery acid contacts skin or clothing, flush immediately with water
and neutralize with baking soda.
2. Electrical
requirements
•The pump should be on a dedicated (individual) circuit, controlled
with a double pole switch (UL/CSA certified) rated at or above the
fuse ampere indicated by the pump motor label. Depending on
distance of the power source from the pump and ampere load on the
circuit, wire may need to be heavier than indicated by the chart.
•The pump is protected with a fuse. Use an approved wire of the size
specified or heavier.
Voltage
Model
Fuse
(amp)
Wire Leads
Wire Size
(Stranded MTW)
12V DC
157145
15.0
RED (positive +)
BLACK (negative -)
#14 AWG (2.5mm2)
(or heavier)
12V DC
157147
15.0
RED (positive +)
BLACK (negative -)
#14 AWG (2.5mm2)
(or heavier)
12V DC
157153
20.0
RED (positive +)
BLACK (negative -)
#14 AWG (2.5mm2)
(or heavier)

Installation (continued)
10
3. Connect pump
to battery
Connect the pump to a 12V DC battery using the following procedure:
a) Disconnect the vehicle battery ground wire.
b) Connect the pump’s red wire to the positive (+) terminal of the battery.
c) Connect the pump’s black wire to the negative (-) terminal of the
battery.
d) Reconnect the vehicle battery ground wire.
Note: Skip steps (a) and (d) if battery is not in a vehicle.
WARNING: Always connect in this sequence to avoid possible shock.
4. Disconnect
after use
AFTER EACH USE, disconnect power to the pump using the following
procedure:
a) Disconnect the vehicle battery ground wire.
b) Disconnect the pump’s black wire from the negative (-) terminal of
the battery.
c) Disconnect the pump’s red wire from the positive (+) terminal of the
battery.
d) Reconnect the vehicle battery ground wire.
Note: Skip steps (a) and (d) if battery is not in a vehicle.
WARNING: Always disconnect in this sequence to avoid possible shock.
NOTE: It is important to disconnect power to the pump when not in use for
safety reasons. ALWAYS verify that the power has been disconnected before
adding chemicals or servicing.
Note: A remote switch is recommended for temporarily shutting off the pump’s operation.
Call NorthStar Product Support at 1-800-270-0810 to order NorthStar item #94992.
Negative
(black wire)
Positive
(red wire)

Installation (continued)
11
Step Four: Check and test completed assembly.
WARNING
Check and test completed assembly
Serious injury could result from chemical leaks if pump is improperly assembled or the design
of the pump is modified.
Follow the steps below to ensure the pump is properly assembled.
Never modify the pump design.
1. Check
assembly
Check assembly to assure the pump is properly assembled and in safe
working condition.
2. Test with
water
Test the system for leaks with water:
a) Fill the tank with water.
b) The pump is an “on demand” pump. When turned on, the pump will
prime itself, then turn off once reaching pressure. When the flow
continues, the pump will automatically re-start.
c) Check for leaks throughout the system. If a leak is detected, fix the leak
and re-test the system with water.

Features
12
1. Motor Armor System. This system will shut the pump off in the event of a leak inside the
pump cartridge to prevent damage to the motor.
2. ON/OFF Switch. Allows the operator to turn the pump on and off.
3. LED. Turns on when there is a fluid leak inside the pump cartridge.
4. Pressure Switch. The pressure switch reacts to pressure, and interrupts power at the preset
shut-off pressure indicated on the pump label. When outlet pressure drops below a
predetermined limit, the switch will close, and the pump operates until the shut-off pressure is
achieved. The shut-off pressure is set to factory calibrated standards.
5. Quick Connect Ports. Allows quick and easy fitting removal.
6. Pump Cartridge. The portion of the pump that moves fluid. Quickly and easily replace the
low-cost consumable pump cartridge once it is worn.

Operation –Important Safety Information
13
Now that you have completed and tested your assembly, there is some important safety and health
information you need to know with regard to handling and spraying chemicals.
WARNING
Carefully read and make sure you understand the following safety information before using the
pump.
General Chemical Safety:
WARNING
Heed the warnings below and follow all instructions carefully.
Improper handling of chemicals can result in serious injury or illness, or cause damage to the
environment.
•Chemical label. ALWAYS READ and FOLLOW all chemical label instructions.
•Licensing/regulation. Refer to any applicable licensing restrictions or state/federal regulations
with regard to the application of the particular chemical you plan to use.
•Emergency procedures. Before handling chemicals, carefully review the Chemical Accident
Procedures listed later in this section, as well as the Statement of Practical Treatment section on
the chemical's label.
•Inhalation/contact. ALWAYS take precautions to avoid inhaling or coming into contact with
the chemical.
•Personal protective equipment. ALWAYS wear protective clothing, eye protection, and
chemical-resistant gloves when operating and cleaning the pump. Wear additional protective
gear (such as facemask or apron) as recommended on the chemical's label.
•Children/pets. Some chemicals can be especially toxic to children and animals. ALWAYS
exercise extra caution around children. Keep pump and all spray materials away from children
and animals.
•Ventilation. ALWAYS ensure there is adequate ventilation when mixing, pouring, or spraying.
•Flammables. NEVER use any flammable chemicals in the pump.
•Corrosives. DO NOT use corrosive chemicals in the pump. They can weaken the pump and its
parts, resulting in leaks. Check with the chemical manufacturer to ensure chemical is compatible
with all components of the pump.
•Chemical interaction. ALWAYS flush the pump before switching chemicals. Different
chemicals may interact dangerously with each other.
•Chemical storage. ALWAYS store chemicals in a properly labeled container and in a secure
location per the manufacturer’s recommendations.
•Health monitoring. Monitor the health of operators who are frequently exposed to chemicals,
as recommended by chemical labels or local/federal regulations.
•Do not mix chemicals. Mixing chemicals can result in cause toxic vapors and mixtures.

Operation –Important Safety Information (continued)
14
Chemical Application Safety:
WARNING
Caution must be used when spraying chemicals to avoid unsafe exposure to humans and the
environment.
Heed the warnings below and follow all instructions carefully.
Before Spraying
•Soak. ALWAYS soak vegetation in the area surrounding the work zone before spraying bleach.
Bleach will kill vegetation if not soaked thoroughly.
•Pump prep. ALWAYS inspect and prepare the pump before use according to the directions
provided in this manual.
•Keep pump off. Do not turn on power to the pump until ready to spray in order to avoid
unintentional spray release.
•Wind speed. NEVER spray when wind speed exceeds 5 MPH in order to minimize spray drift.
•Clear area/post. ALWAYS keep the work area clear of people and pets. POST warning notices
to restrict access by the public for the period recommended on chemical label.
•Operator age. You must be 16 years of age or older to operate this pump. Some chemicals are
especially toxic to children.
During Spraying
•Over-application. DO NOT over-apply chemical. Apply at a rate recommended by chemical
manufacturer. Excess chemical can be dangerous to humans, damage desirable plants, and
contaminate soil and water sources.
•Children/pets. ALWAYS exercise extra caution when spraying near areas accessible to
children and pets.
•Eating/smoking. DO NOT eat, drink, smoke, rub your eyes, or touch any part of your bare skin
while handling chemicals and spraying.
•Heat/flames. DO NOT spray near open flames or sources of heat.
•Spills. ALWAYS clean up spills immediately per instructions on the chemical label.
•Unattended. ALWAYS turn off power to pump and relieve system pressure before leaving
pump unattended.
•Troubleshooting. ALWAYS refer to the safety instructions in the troubleshooting section
before attempting any repairs.
After Spraying
•Soak. ALWAYS soak vegetation in the area surrounding the work zone after spraying bleach.
Bleach will kill vegetation if not soaked thoroughly.
•Clean pump. ALWAYS clean the pump immediately after use according to the directions
provided in this manual.
•Decontaminate. ALWAYS decontaminate yourself immediately after you are finished spraying
and handling chemicals. Wash all exposed areas of the body with soap and water and remove
and launder clothing.
•Chemical disposal/storage. ALWAYS dispose of or store remaining chemicals properly as
recommended on the chemical label.

Operation –Important Safety Information (continued)
15
Chemical accident procedures:
WARNING
Before you use the pump, review the following information with regard to handling
accidents.
Chemical spills, pump leaks, personal contamination, and poisoning are accident situations
which you may encounter.
All require an immediate response –See instructions below.
Pump leak
In the event that the pump develops a leak while spraying chemicals, you
must immediately stop spraying.
Turn off power to the pump and follow the directions below, as
applicable.
Bodily chemical
contact
Personal contamination can occur when chemicals splash, spill, or spray
directly onto a person.
1. Follow the emergency first aid instructions on the chemical label listed in
the First Aid or the Statements of Practical Treatment sections.
General procedures for contact with bleach or surfactant includes:
a) Eyes –immediately rinse with water for 15 minutes. If irritation
persists, contact a doctor.
b) Skin –rinse all contaminated skin surfaces with water. If irritation
persists, contact a doctor.
c) Clothing –remove contaminated clothing. Dispose of heavily
contaminated clothing per chemical label instructions.
2. Seek medical advice if instructed on the label, or if the victim experiences
symptoms of harmful effects such as burning, swelling, nausea, chest
pain, difficulty breathing, dizziness, or confusion. When seeking medical
advice, be sure to bring the chemical product label.
Poisoning by
ingestion or
inhalation
In case of poisoning from ingestion or inhalation:
IF THE VICTIM HAS COLLAPSED OR IS NOT BREATHING, CALL
911. Otherwise:
1. If you are the victim, immediately seek assistance from nearby personnel
because you may become incapacitated.
2. Follow the emergency first aid instructions on the chemical label in the
First Aid or Statement of Practical Treatment sections.
General procedures for ingestion or inhalation of bleach or
surfactant includes:
b)For ingestion: Drink a glass of water. Call a doctor or poison
control center. DO NOT induce vomiting unless instructed to do
so by a doctor or poison control center.
b) For inhalation: Immediately move to fresh air.
3. Call a poison control center for further advice. In the U.S., call 1-800-222-
1222 to be automatically linked to the nearest certified poison
control center. Have the chemical label available for reference.

Operation –Important Safety Information (continued)
16
Chemical spills
Chemical spills must be quickly contained and properly cleaned up.
Refer to the chemical label for any specific clean-up instructions with regard
to the chemical spilled.
General procedures include:
1. Control the spill by stopping the source of the spill. If the source of the
spill is a container leak, place the leaking container in a larger, watertight
container. Keep unprotected people away from the spill site.
2. Contain the spill so that it does not spread and get into water sources. Use
a shovel or other tool to make a dike around the spill with soil, sod, or
absorbent material.
3. Clean up the spill immediately. Absorbent materials like ground corncobs
or pet litter should be spread on the spill area to soak up the chemical.
The contaminated material should then be shoveled into a leak-proof
container. Do not flush the spill area with water until you receive advice
as directed below.
4. Seek additional advice from the chemical manufacturer and your state’s
pesticide regulatory agency regarding decontamination of the spill site:
- Chemical manufacturer. The chemical label provides contact
information for the chemical manufacturer.
-State pesticide regulatory agency. In the U.S., call the National
Pesticide Information Center at 1-800-858-7378 for assistance in
determining how to contact your state’s pesticide regulatory
agency.

Operation –Preparing the Pump for Each Use
17
If the pump has been used previously, it must be prepared BEFORE EACH SUBSEQUENT USE.
WARNING
Read instructions below carefully for inspecting and preparing the pump.
Damaged or clogged equipment could result in leaks or uncontrolled spray.
Leaks could result in injury to the operator or bystanders from chemical exposure, or cause
damage to the environment.
Important safety rules:
•Power off. Make sure all power is OFF before cleaning, inspecting, or servicing the pump.
•Guards/shields. Make sure all guards and shields are replaced after servicing the pump.
•Replacement parts. If a part needs replacement, only use parts that meet the manufacturer’s
specifications. Replacement parts that do not meet specifications may result in a safety
hazard or poor operation of the pump.
1. Ensure clean
system
Ensure the pump has been thoroughly flushed and drained of all
residual chemicals from prior uses.
2. Inspect &
repair
Inspect and test the pump system thoroughly:
a) Inspect hoses/lines for exposed mesh and holes. Replace all worn
or damaged hoses/lines.
b) Inspect fittings for cracks and leaks. Replace all damaged fittings
with original NorthStar parts.
c) Partially fill system with plain water and spray to test for leaks.
Repair as needed.
IMPORTANT: After any repair work has been done, ALWAYS test for
leaks with water one final time before using.
Be certain the pump materials will be compatible with the chemical being pumped. NorthStar pumps
are intended for intermittent or continuous duty when the proper operating criteria are met. If unsure of
the chemical compatibility with the NorthStar pump components or the motor’s intended design, please
call NorthStar Product Support at 1-800-270-0810 for assistance.
CAUTION
DO NOT operate the pump at pressures which cause the motor to exceed the amperes rating
indicated on the name plate.
Improper adjustment of the pressure switch setting may cause severe overload or premature
failure. Failures due to improper adjustment of the pressure switch setting will not be covered
under the warranty.
Note: A reserve, clean container capable of holding at least the volume of the entire pump system
should be kept for use when the pump system needs to be emptied temporarily for repairs. It is
advisable to purchase a reserve tank suitable for chemical storage from Northern Tool and
Equipment for use in these circumstances. The container should be properly labeled as to its
contents if it is used.

Operation –Using the Pump
18
Step One: Assess wind conditions and clear work area.
Before you decide to spray, you must determine whether wind conditions are suitable. You must
also restrict access to the work area to ensure the safety of bystanders.
WARNING
Do not spray if wind speeds are greater than 5 MPH or if there are bystanders in the
intended spray area.
1. Assess wind
speed
Assess weather conditions to ensure that it is not too windy to spray.
DO NOT SPRAY if wind speeds are greater than 5 MPH.
Visible indication of wind speed:
If leaves are in constant motion or there is any branch movement, DO
NOT spray because the wind is too strong.
2. Clear work area
Clear the work area of all bystanders and pets.
Restrict access by the public for the period recommended on chemical
label.
Step Two: Operate the pump.
WARNING
ALWAYS wear personal protective equipment as directed on the chemical label when spraying.
Long pants and sleeves, chemical-resistant gloves, and eye protection are strongly
recommended. Additional protective gear may be required depending on the particular
chemical.
1. Review safety
information
Review the Operation –Important Safety Information section related to
Chemical Application Safety provided in this manual.
2. Wear
personal
protective
equipment
Wear personal protective equipment as directed on the chemical label.
Goggles, gloves, long sleeves, and pants are recommended while mixing
chemical. NOTE: Clothes may be damaged by bleach.
3. Turn on
power
Turn on the power to the pump.
Note: The pump will start automatically when power is turned on. The
pump will cycle on and off as needed to retain pressure in the hose.

Operation –Using the Pump (continued)
19
4. Pressure
switch
operation
The pressure switch reacts to outlet pressure, and interrupts power at the
preset shut-off pressure indicated on the pump label. When outlet pressure
drops below a predetermined limit the switch will close and the pump
operates until the shut-off pressure is achieved. The shut-off pressure is set to
factory calibrated standards.
Note: If the plumbing is restrictive or the flow rate is very low, the
pump may re-pressurize the outlet faster than the fluid is being
released, causing rapid cycling (*ON/OFF within 2 seconds). If the
pump is subjected to rapid cycling during normal operation, or for
infrequent periods, damage may occur. Applications which exhibit
rapid cycling should have restrictions in the outlet minimized.
5. Mixing soft
wash mix
Add chemical to tank through fill cap:
a) Wear personal protective equipment while mixing. Goggles,
gloves, long sleeves, and pants are recommended. NOTE: Clothes
may be damaged by bleach.
b) Add to tank in this order:
1.Household bleach (6% sodium hypochlorite
concentration)
2.NorthStar Max Cling Soft Wash Surfactant (NTE #81297
or #81298)
3.Water
c) Recommended mix ratios
NOTICE: Never spray undiluted bleach. It must be mixed with water and
NorthStar Max Cling Soft Wash Surfactant. Failure to do so could result in
unforeseen damage to vegetation or the cleaning surface. Always test soft
wash mix in an inconspicuous area to confirm compatibility.
NOTICE: Not for use on painted wood surfaces. Use only on hard, non-
porous surfaces.
WARNING: Never exceed 3%, higher concentrations will increase the risk
of damage to the sprayer. For difficult stains, repeat applications may be
required.
6. Before
spraying
Follow the steps below before spraying:
-Cover all electrical outlets and light fixtures and remove any
decorations on surfaces to be sprayed.
-Using fresh water from a garden hose, soak any vegetation that may
come into contact with soft wash mix. If cleaning roof with gutters,
soak area around downspouts with fresh water.
NOTE: To eliminate the need for a ladder for difficult to reach places, such as
tall roofs, use the NorthStar telescoping wand (NTE #81140). To reduce
fatigue, improve spray precision, and improve productivity while using a
telescoping wand, use with NorthStar tripod (NTE #157143).

Operation –Using the Pump (continued)
20
7a. Spraying
roofs with
soft wash
mix
Follow the steps below for spraying a roof:
1. Using a 3% mix (see table), spray roofs from top to bottom.
2. Spray in 10-foot-wide sections, only applying enough to get the
surface wet.
3. Let the chemical dwell for approx. 10 minutes, but do not let the
chemical dry on the surface. While the chemical is dwelling, the
previous section can be rinsed.
7b. Spraying
siding with
soft wash
mix
Follow the steps below for spraying siding:
1. Using a 1% mix (see table), spray siding from bottom to top.
2. Spray in 10-foot-wide sections, only applying enough to get the
surface wet.
3. Let the chemical dwell for approx. 10 minutes, but do not let the
chemical dry on the surface. While the chemical is dwelling, the
previous section can be rinsed.
7c. Spraying
fences and
decking with
soft wash
mix
Follow the steps below for spraying fences or decking:
1. Using a 2% mix (see table), spray fences from bottom to top; spray
flat surfaces (decking floor) starting on the far side and working
back towards the sprayer.
2. Spray in 10-foot-wide sections, only applying enough to get the
surface wet.
3. Let the chemical dwell for approx. 10 minutes, but do not let the
chemical dry on the surface. While the chemical is dwelling, the
previous section can be rinsed.