North Star MHOTPWR - Manual (Page 12)

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3. Rotate the grip on the dual lance wand to change to
low pressure and start the detergent flow.
4. Spray detergent onto the surface and allow it to soak.
Chemicals need time (dwell time) to work properly.
Follow the chemical manufacturer’s
recommendations for dwell time.
5. Change back to high pressure by rotating the grip until
water comes out the right lance only.
6. Hold the lance with two hands, have a sturdy stance.
7. Point lance at dirty surface and squeeze trigger.
8. Wash from the bottom to the top, using side to side
motions. This washes away heavy dirt and allows the
detergent to soak as you work toward the top.
9. Use the width of the spray pattern to wash in a wide
path. Overlap spray paths for complete coverage.
10.The nozzle should be 12” to 24” from the work, closer
for tough areas.
Caution: Be careful on painted or delicate surfaces,
the pressure may damage the surface if the nozzle is
too close.
11. Small parts should be washed in a basket so the
pressure does not push them away. Larger, light
weight parts should be clamped down.
12. The pressure washer is set to the maximum rated
pressure when it leaves the factory. There are two
easy ways to change your pressure.
a. Rotate the grip slightly to allow some flow to pass
through the left lance. See step 3.
b. Or, turn the black unloader knob counter clockwise.
WARNING: Do not alter the unloader valve’s
maximum pressure. Excess pressures could cause
serious injury and/or pump damage. Any alteration
other than turning the adjustment knob will void
your warranty.
For Steam (Optional)
1. Set the thermostat to 250
°F.
2. Turn the Heat switch ON.
3. Insert the steam nozzle into the nozzle holder.
To Stop
1. If detergents were used, draw clear water through the
detergent inlet line to purge detergent. Failure to do
so may clog the chemical injector.
2. If the burner was used, turn off the “Heat” switch and
pump cold water through the coil for 3 minutes.
Insufficient cool down period of high pressure hose
will cause excessive wear and eventual rupturing of
hose.
3. Turn the pump switch OFF.
4. Turn OFF the water supply.
5. Squeeze the trigger to relieve the system pressure.
Safety Features
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 Customer Service at 1-800-270-
0810.
II.) High Temperature Limit
Grip Black Unloader
Knob
Safety Latch
00789
00790
Safety
Relief
High Temp.
Limit
00788