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I.) Safety Relief
The safety relief valve is a backup safety feature. If the
unloader malfunctions, the safety relief valve will open
and relieve system pressure.
WARNING: If the safety relief valve ever discharges
water, turn the unit off and do not use the machine.
See a dealer or call Product Support at
1-800-270-0810.
WARNING: Unauthorized machine modification or use of non-approved replacement parts may cause personal
injury and/or property damage and will void the manufacturer warranty.
All mechanical equipment, no matter how well designed, will need repairs. A NorthStar pressure washer is no exception.
At times, a NorthStar pressure washer may be inoperable because repairs are required. NorthStar Product Support will
assist in these repairs as needed, but if an inoperable pressure washer creates a major expense to your business then
we strongly recommend the following:
1. Have someone on staff who is trained in the operation of the pressure washer and is capable of making minor repairs
and performing all preventative maintenance procedures as outlined in the provided manuals.
2. Keep a stock of recommended service parts for maintenance and minor repairs.
Maintenance Mode
Before performing any maintenance on the pressure
washer, it must be placed in maintenance mode.
A.) Turn off water supply
B.) Bleed water from system
C.) Turn off and unplug power cord
Maintenance Schedule
What to Check
When To Check
Fuel Filter
Inlet Filter
Each Use
Tires
Each Use
Hoses
Each Use
Bolts
Each Use
Safety
Relief
00789
Maintenance Instructions
What to Do
500 hrs
Change
Clean
Check Pressure
Check for Wear
Check for Loose
Bolts
Safety Features
II.) Thermostat
The adjustable thermostat is another safety feature. If
the discharge water reaches the desired temperature
setting, the burner will cycle off until the water
temperature is below the desired temperature setting
and then it cycles the burner back on for firing.
Thermostat
00790
13
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