Harrington Hoists and Cranes TCS Hoist - Manual (Page 25)

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4.5 Speed Adjustment Controls
4.5.1 The hoist is equipped with speed adjustment controls. The controls allow the hoist lifting and lowering
speeds to be reduced for those applications requiring slower speeds or better speed control. The
speed adjustment controls are set for the highest speed from the factory. The speed adjustment
controls are located on top of the valve section of the hoist as shown in
Figure 4-4 .
4.5.2

The hoist must be stopped when adjusting the lifting and lowering speeds.
4.5.3 To reduce the lifting/lowering speeds remove the speed adjustment covers to gain access to the speed
adjustment screws as shown in
Figure 4-4 . The covers may be plastic or aluminum. Viewed from the
valve side of the hoist, the lowering adjustment screw is on the left and the lifting adjustment screw is
on the right. The lifting and lowering adjustment mechanisms are not connected, allowing separate
adjustments for lifting and lowering speeds.
4.5.4 Referring to Figure 4-4 the hoist is at the highest speed when the screw is in the “vertical” position and
at the lowest speed when in the “horizontal” position. Speed adjustment can be made between these
postions.
Figure 4-4 Speed Adjustment