TYMCO 600 2008, Operator'S Manual

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2008 21 600OPTRS
B. PICK-UP HEAD CURTAINS
Because high velocity air is used by the pick-up head to remove debris from the pave-
ment, the pick-up head must be sealed by rubber curtains to the pavement. These
rubber curtains will incur wear as the pick-up head is dragged along the pavement and
will require periodic replacement. Failure to replace worn out pick-up head curtains will
result in poor sweeper performance and excessively dusty conditions. Seal curtain life
will depend on pavement texture and sweeping speeds. Fast sweeping speeds increase
curtain friction and accelerate curtain wear.
NOTE : Rubber curtain seal material is critical for proper wear life and sweeper per-
formance. Use only TYMCO replacement curtains in order to guarantee
sweeper performance. To replace curtains, refer to Service & Parts Manual.
C. PICK-UP HEAD ADJUSTMENTS
1. Blast orifice - The Model 600 pick-up head incorporates a bolt-on blast orifice
flange. Each time the pick-up head curtains are replaced, the blast orifice gap should
be tapered at 1/2" pressure side to 3/4" suction side by sliding the bolt-on flange in or
out. Failure to adjust the blast orifice gap properly will result in poor sweeper perfor-
mance.
2. Skid Plate Adjustment - The pick-up head is dragged on two skid plates (one on
each side of the pick-up head). These skid plates use carbide runners to prolong
their service life. The skid plates are used to adjust the height of the blast orifice
from the pavement. Refer to drawings for correct settings.
NOTE : Do not lower skid plates when new curtain set is installed in order to prevent
curtain wear, as lowering skid plates raises the blast orifice from the pave-
ment and prevents curtains from properly sealing. Poor sweeper performance
will result!
3. Pick-Up Head Spring Adjustment - Four springs are used (two on each side) to
suspend the pick-up head from the sweeper carriage. The spring suspension is
designed to give the pick-up head a floating effect as it is dragged along the pave-
ment. This serves two purposes: (1) it prolongs the service life of the carbide skid
plates; (2) it forms a shock absorption system that helps to protect the pick-up head
from sharp impacts. Failure to keep spring suspension system in proper adjustment
will result in premature wear of skid plates.
For proper spring adjustments, refer to drawings. Once spring tension is set, in-
crease sweeper auxiliary engine speed to 2000 RPM and pull sweeper forward. The
increase in air velocity through the pick-up head should cause pick-up head to draw
down and seal itself to the pavement. The pick-up head once drawn down should
then be easily lifted by one hand which demonstrates the floating characteristics
desired.