Goff 2460, Operation And Maintenance Manual

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Rod and Pipe Cleaner, Block Cleaners and Wire Mesh Machines
major
function is to allow parts to enter one end of the machine and exit the other end. While
parts are in the machine, they are blasted with abrasive. These machines allow
continuous blasting of parts without stopping the machine to unload and load parts. Rod
and pipe cleaners use roller conveyors to move parts. Block cleaners and wire mesh
machines use a belt conveyor to move parts.
Liners (optional)
are put into the machines to increase the life of the chamber
walls. Not every Goff machine has liners. Goff liners come in different varieties. Some
Goff machines will have more than one type of liner. These varieties include cast alloy
liners, plate liners, hanging liners, table liners, ban-el head liners, and abrasive resistant
rubber. Liner position and size were designed for ease of maintenance and replacement.
When liners get worn to half their original thickness or severe wear holes develop they
should be replaced. If liners are allowed to wear through. damage could occur to internal
chamber components.
Note: All cast alloy liners and some plate liners are fastened to the wall and/or ceiling
of the chamber with cast nuts. Barrel head liners are fastened with counter­
sunk bolts to the barrel head. Abrasive resistant rubber is held in place with
bar retainers and nuts. Some abrasive resistant rubber is held in place with cast
nuts. All fasteners should be replaced when worn severely. Always check the
fasteners for wear and replacement when replacing liners. Some liners rest on
the bottom of the chamber or on top of a table. These liners do not use
fasteners.
ROLLER CHAIN DRIVES
Normal chain wear is caused by a joining of the pins in the bushings. In a
properly lubricated chain drive, separating film of fluid lubricant is formed in the
operating chain joints. Without adequate lubrication wear in the chain joints is usually
the limiting factor in the life of the chain. Such wear results in increased chain pitch.
This increase in pitch allows the chain to ride out on the sprocket teeth. When excessive
stretching occurs the chain must be replaced before it overrides the sprocket teeth.
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