DSTOPTRS 20 2008
BLOWER ASSEMBLY
A large turbine type blower is used in the TYMCO Model 600 to generate both the vacuum and
pressure air stream with which to sweep. The blower assembly is found on the left side of the
sweeper (see Page 3) and is driven by an auxiliary engine through a sheave and belt system.
WARNING: Never insert hand into blower housing for any reason!
WARNING
: Always remove ignition key from sweeper control panel and/or
disconnect battery ground when working on or near the blower
or blower belt.
A. OPERATION
The blower begins to rotate as soon as the auxiliary engine is started. No clutch is
used to engage or disengage blower.
To increase blower speed, locate vernier throttle cable on the control console. Turn
throttle cable knob counter-clockwise to desired RPM. DO NOT JERK THROTTLE
KNOB OR DAMAGE TO THROTTLE CABLE WILL RESULT.
Reverse procedure to decrease blower RPM. Use vernier override button on top of
throttle cable knob only for emergency shutdowns
.
B. BLOWER RPM SETTING
The Model 600 Turbo Charged Auxiliary Engine uses a sheave ratio of 1.45 to 1 -
meaning that the blower RPM is 1.45 times faster than the engine RPM. Blower RPM is
therefore set by reading the auxiliary engine tachometer. As a rule, the higher the blower
RPM, the heavier the debris which can be picked up providing the sweeper is in good
operating condition. However, higher RPM results in faster component wear so engine
RPM should be set according to the debris load on the street. The following RPM are
recommended:
ENGINE RPM
Paper, Leaves, Light Trash 1500
Normal Accumulation of Dirt, Sand and Gravel 1600
Heavy Accumulation of Dirt, Sand and Gravel 1800
DO NOT EXCEED 2000 ENGINE RPM WITHOUT FIRST CONSULTING THE FACTORY.
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