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John Deere Operator's Manual 19
OPERATING INSTRUCTIONS
SHUTDOWN:
1. Move the switch to the "Pump" position.
2. Squeeze the trigger and discharge the water for a period of three minutes
to cool the heat exchanger and high pressure hose. (Insufficient cool down
period of the high pressure hose will cause excessive wear and eventual
rupturing of the hose.)
3. Move the switch to the "OFF" position. (Auto Start/Stop Option will shut
the unit down, but total shutdown requires switch to be moved to the
"OFF" position.)
4. Turn off the water supply and trigger the gun momentarily to relieve trapped
pressure.
5. Disconnect and drain the high pressure hose, gun, and dual lance. Wipe the
unit clean and store in a non-freezing environment.
STORAGE & MAINTENANCE INSTRUCTIONS
SPECIFIC MAINTENANCE:
PUMP: Change the pump oil after the first 50 hours of operation. After initial change,
every 3 months or 250 hour intervals are recommended. If oil appears dirty or
milky, changes may be required in greater frequency. Use pump oil SAE20 or
30 and fill only to the center of the oil sight glass. DO NOT overfill.
QUICK COUPLERS: There are o-ring seals inside the couplers which will deteriorate.
To replace, simply install a replacement o-ring to correct the leak. (Additional
o-rings can be purchased from your dealer.)
NOZZLE: Water flow through the spray nozzle will erode the orifice, making it
larger, resulting in a pressure loss. Nozzles should be replaced whenever
pressure is less than 85% of the maximum. The frequency of replacement will
depend upon such variables as mineral content in the water and number of
hours the nozzle is used.
FUEL WATER SEPARATOR: The fuel filter has a built in water separator.
Occasionally the water has to be drained from the separator. Follow the
procedures listed below:
1. Check the collection bowl daily.
2. Ensure the unit is off and place an oil catch basin under the
fuel cartridge.
3. Loosen the drain plug to allow the fuel/water contaminents to
flow into the catch basin.
4. Retighten the drain plug when completed.
5. Dispose of drainage according to environmental regulations in
your area.
BURNER AIR ADJUSTMENT: The air shutter has been factory preset for proper
operation between sea level and 2000 feet elevation at standard conditions
(60°F ambient water and air temperatures). To assure maximum combustion
efficiency at colder temperatures and higher altitudes, it will be necessary
to adjust the air supply to the combustion chamber. A smoke spot test is
recommended during any air shutter adjustment. This will aid in maximizing
the burner efficiency and avoid the inefficient operation and excessive
sooting of the combustion chamber.
1. The machine must be running and the burner on.
2. Take a smoke spot test to determine if more or less air is
required for proper combustion.
a. If the test is greater than a #3 smoke, turn the shutter
arm counterclockwise to increase the air flow into the
combustion chamber.
b. If the test is yellowish in color, turn the shutter arm
clockwise to decrease the air flow into the combustion
chamber.
3. Hold onto the air shutter adjusting arm and loosen the locking nut.
Move the shutter in 1/8" increments and retighten the locking nut
after each 1/8" movement.
4. Trigger the gun on and off slowly to make sure there is proper
ignition. Slight or no puffing on the ignition, and a smoke spot test
of 0-3 is good.
5. Repeat steps 2 and 3 until step 4 is attained.
LEAKS: Promptly eliminate any leaks found in the pumping system by removing
suspect parts, applying thread sealant to the threads and reinstalling.
NOTE: If using teflon tape, be certain no tape gets inside any plumbing to prevent
the possibility of a plugged spray nozzle.
DANGER
RISK OF INJECTION CAUSING
SEVERE INJURY!
-AUTO START/STOP FEATURE WILL
SHUTDOWN THE PRESSURE WASHER
UNTIL THE GUN IS TRIGGERED.
TOTAL SHUTDOWN REQUIRES "OFF/
PUMP/BURNER/STEAM" SWITCH TO
BE MOVED TO THE OFF POSITION.
-TO PREVENT ACCIDENTAL HIGH
PRESSURE DISCHARGE, DO NOT
LEAVE UNIT UNATTENDED UNTIL
"OFF/PUMP/BURNER/STEAM"
SWITCH IS IN THE OFF POSITION.