2008 19 210OPTRS
PICK-UP HEAD
The pick-up head is the most important component of the TYMCO Model 210 Regenerative Air
Sweeper. But, because the pick-up head must be dragged on the pavement, it can be seriously
damaged by careless operation. Even when the pick-up head is fully raised, It is still close to the
pavement and care must be taken not to damage it in transit.
DO NOT:
1. Back up with pick-up head lowered.
2. Raise pick-up head before lowering engine RPM.
3. Increase engine RPM above idle before lowering pick-up head.
4. Forget to raise pick-up for transit.
5. Cut corners while in transit.
6. Drive over speed bumps or divider turtles higher than two inches.
To lift debris from the ground, a 12" (30.5 cm) suction nozzle is located on the right side of the
pick-up head. The sweeper blower draws air from the hopper creating a vacuum. A flexible
hose is used to connect the hopper vacuum to the pick-up head suction nozzle whereby debris
is lifted from the ground and deposited into the hopper. However, because the pick-up head is
78" (198 cm) wide, some means must be used to move debris across to the suction nozzle.
Just as debris is lifted into the hopper by the vacuum generated by the blower, the exhaust air of
the blower is used to blow debris over to the suction nozzle. This is done by forcing the blower
exhaust air through an elongated pressure nozzle called the Blast Orifice. The blast orifice
opening is 78" (198 cm) long with a 5/8" - 3/4" (16 - 19 mm) tapered opening (see Parts & Ser-
vice Manual for adjustment procedures). The blower exhaust air is squeezed through this nar-
row opening which compresses the air into a powerful jet that is used to blast debris from the
ground, forcing it over to the suction nozzle.
A. DESCRIPTION OF OPERATION
When at sweeping location, start sweeper auxiliary engine and let idle. Using the
pick-up head toggle switch located on the control panel, lower pick-up head fully to
pavement (lift chains should be slack). Pull forward a few feet allowing curtains to
fold under the pick-up head into the sweep position. Increase sweeper auxiliary en-
gine speed to desired RPM and begin sweeping. Once sweeper auxiliary engine
speed is increased and the sweeper is moving forward, the pick-up head skid plates
should become firmly sealed against the pavement.
When sweeping operation has been completed, lowering engine RPM, continue trav-
eling forward for a few feet to allow any debris under the pick-up head a chance to
be moved over to the suction nozzle and be picked up. Before raising the pick-up
head, throttle down sweeper engine to idle, then raise pick-up head. When fully
raised, the pick-up head will be secure against up-stop feet for sweeper transit.
PICK-UP HEAD MUST BE RAISED FOR TRANSIT!
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