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H.E.R.O. INDUSTRIES 300S / 300SL LEGEND Owner’s Manual
9
SPECIAL NOTES AND INSTRUCTIONS
NEVER LEAVE THE UNIT UNDER PRESSURE WHEN NOT SPRAYING (MOTOR TURNED
OFF). RELIEVE PRESSURE BY TRIGGERING GUN. NEVER STORE THE UNIT WITH PAINT
OR WATER IN THE PUMP SYSTEM, EVEN OVERNIGHT.
ý NEVER attempt to start the motor when the unit is under pressure. Relieve pressure and follow
instructions in "Setting up to spray"
ý NEVER attempt to run the motor on longer or lighter extension cord than specified.
ý Avoid operating the unit while tilted. Keeping it level assures greater operating efficiency.
þ If motor's thermal overload switch has opened, unplug unit and allow it to cool.
ý DO NOT attempt to resume spraying before determining and correcting the cause of overheating.
þ Always follow flushing and cleaning instructions exactly.
þ In hot weather, locate unit in shade.
þ Regularly check the level of H.E.R.O. LVO hydraulic fluid in the hydraulic tank. It should be kept near
full, top up as needed with only genuine H.E.R.O. LVO hydraulic fluid.
þ Crankshaft eccentric bearing should be greased at regular intervals consistent with hours of use. Use
MO-2 grease ( i.e. common auto grease) approximately every 10 hours of operation.
þ If you wish to power your H.E.R.O. airless sprayer with a generator, it must be a minimum of a 4500
watt generator, in good operating condition.
NOTE; An electric tool must be powered by a generator which has an output wattage of at least three
times the maximum draw of the motor under full load.
þ A minimum 50’ and a maximum of 300’ of airless spray hose may be used.
NOTE: 50’ x 3/8” paint hose ( part # 117 ) should be used for every 50’ x 1/4” paint hose
( part # 114 ) over 100’.
100’ total length of paint hose = 2 of 50’ x 1/4” paint hose.
150’ total length of paint hose = 2 of 50’ x 1/4” paint hose and 1 of 50’ x 3/8 paint hose.
200’ total length of paint hose = 2 of 50’ x 1/4” paint hose and 2 of 50’ x 3/8 paint hose.
250’ total length of paint hose = 3 of 50’ x 1/4” paint hose and 2 of 50’ x
3/8 paint hose.
300’ total length of paint hose = 3 of 50’ x 1/4” paint hose and 3 of 50’ x 3/8 paint hose.
þ Product viscosity, altitude ( feet above sea level ) and vertical reach can effect pump performance and
special accessories may be required. Product viscosity may have to be further reduced at higher
elevations. Special “ High Altitude” siphon assemblies ( part # 4-210-HA ) are available for use in
areas at or above 5000 feet above sea level. This kit may also prove beneficial if spraying thicker
viscosity materials. The larger diameter 3/8” paint hose should also be used.
þ Check drive belt ( part # 66/100 ) tension frequently. The belt will stretch with use, and should be
adjusted after 20 hours of operation and again after 50 hours. Periodic checks after 50 hours should be
made. Failure of the drive belt is not covered by the equipment warranty, so proper maintenance of the
belt is important.
þ Regularly check fittings, bolts, nuts and connections for damage. Tighten, adjust or replace as required.
þ Check crankshaft alignment often. An out of alignment crankshaft will cause the damage to the
eccentric bearing.