Troubleshooting - North Star 5042373 Owner's Manual

Before troubleshooting or attempting to service, read the following safety rules to avoid accidental
exposure to chemical and also risk of electric shock.
Note: A reserve, clean container capable of holding at least 55 gallons should be kept for use when the
sprayer tank needs to be emptied temporarily for repairs. It is advisable to purchase a reserve tank
suitable for pesticide 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.
Before attempting to service the sprayer:
1. Personal
protective
equipment
2. Review

troubleshooting

table
3. Empty and flush
4. Disconnect
power/relieve
pressure
5. Perform repairs
6. Test after
servicing
PROBLEM
Low pressure
Low flow
Poor spray distribution
Output drops and the
pump is noisy
Troubleshooting
WARNING
Wear personal protective equipment as directed on the chemical label while
servicing your sprayer.
Review the Troubleshooting Table below for the type of problem you are
experiencing. However, DO NOT attempt to repair until the steps listed below
are followed.
If the cause listed for your problem is Clogged intake tube, Clogged suction
strainer, or Worn spray gun nozzle: empty the tank and flush the sprayer with
water as directed in the section, "Operation – Step Four".
- In order to avoid accidental exposure to chemicals, never attempt to unclog
the intake tube or suction strainer, or service the spray gun nozzle, until the
tank has been emptied and the sprayer flushed with water.
Stop the motor and be sure all system pressure is relieved by operating the
spray gun. Disconnect battery and install rubber cover over terminals.
Follow the directions provided in the troubleshooting table to repair the
sprayer.
NOTE: Never try to unclog the sprayer nozzle by blowing through it.
After servicing, ALWAYS test the sprayer for leaks with plain water before
using.
CAUSE
Agitation not tuned properly
Pressure regulator not adjusted
Worn spray gun nozzle
Leak in the system
Agitation valve is open
Agitation not tuned properly
Strainer clogged
Clogged suction line
Worn spray gun nozzle
Pump failure
Tune agitator with desired agitator tip
Adjust pressure regulator
Replace spray gun nozzle
Tighten leaking fitting/hose
Close agitation valve
Tune agitator with desired agitator tip
Remove strainer and clean
Remove obstruction
Replace spray gun nozzle
See pump owner's manual
33
SOLUTION