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3.4.2 The filter servicing the hoist can also service other hoists and air consuming equipment. In this case,
the air filter must be in sized for the total air consumption of the equipment it is servicing.
3.5 Air Dryer -
CAUTION
To prevent corrosion and hoist malfunction, employ an air dryer in the air
supply system to ensure that dry air
is supplied to the hoist. If there is moisture in the air supplied to the hoist,
this moisture will cause corrosion on internal hoist components during periods when the hoist is idle leading to
hoist malfunction.
3.6 Piping, Hoses And Fittings
3.6.1
CAUTION
System Configuration - The system should be configured as shown in Figure 3-1.
Since moisture tends to accumulate in compressed air systems, corrosion may result if the system is
not periodically drained.
Arrange for a drain in the air supply piping at the lowest point in the piping, and
Periodically drain the system to remove moisture/water from the system and to prevent corrosion.
Filter, regulator (if equipped), and lubricator must be arranged in the order shown in Figure 3-2.
Figure 3-1 Diagram of Air Supply Configuration (Typical)
Figure 3-2 Typical Air Supply Filter, Regulator and Lubricator.