Tennant 255 Series II, Руководство оператора, Страница: 53 / 128

OPERATION
2-31
255 SERIES II MM189 (12---89)
10. Disconnect the hydraulic hose from the front of
the quick-disconnect station.
11. Connect the hoses from the snow broom to the
quick-disconnect station ports--- ---upper hose
on snow broom to the engine-side port, lower
hose to operator-side port.
A
B
C
D
02781
CONNECTED SNOW BROOM HOSES
A. Operator-Side Port
B. Engine-Side Port
C. Upper Snow Broom Hose
D. Lower Snow Broom Hose
12. Measure the distance between the floor surface
and the snow broom pivots at the ends of the
broom. These two distances should be equal.
To adjust, loosen the mounting frame upper
end bolts, reposition the frame, and tighten the
bolts. Recheck and adjust as necessary.
A
B
02760
MOUNTING FRAME UPPER END
A. Upper End Bolt
B. Mounting Frame
TO OPERATE SNOW BROOM
Operate the machine as normally done using the
hopper lift and side brush lever to raise and lower
the snow broom. The main brush and side brush
should be raised. The main brush, vacuum fan and
filter shaker switch should be in the (Main Brush On)
position to drive the snow broom. The main brush
and vacuum fan will not operate. The hydraulic fluid
normally used to drive them is being diverted to the
snow broom.
Begin sweeping early and often. Do not allow snow
to accumulate or to become packed and frozen.The
snow broom becomes ineffective in snow deeper
than 4 in (100 mm).
Slow down in deep snow. Snow is thrown at an
angle. The deeper the snow, the steeper the angle.
When the snow is deep, it is carried over the top of
the broom. Although this snow can be swept, slow
down so the broom can catch up.
The brush bristles should contact the surface without
being bent under. Adjust the tension chain and
spring to control contact. The hex set screw on the
support arm can be adjusted to raise or lower the
snow broom.
In heavy snow, the broom may stall out. The
hydraulic system will bypass the snow broom to
protect itself. When this occurs, back the machine
away and allow the broom to start rotating again. Do
not let the snow broom stall for more than
30 seconds. Stalling causes overheating in the
hydraulic system. This can seriously damage the
hydraulic system.