WARNING

To reduce the risk of electric shock, fire, explosion, serious injury or death:

•Disconnect electric power to the tumbler before servicing.

•Close gas shut-off valve to gas tumbler before servicing.

•Close steam valve to steam tumbler before servicing.

•Never start the tumbler with any guards/panels removed.

•Whenever ground wires are removed during servicing, these ground wires must be reconnected to ensure that the tumbler is properly grounded.

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CHAIN DRIVE

Nonreversing Models

Refer to Figure 20.

Proper tension is when the belt can be depressed approximately 1/2 inch (1.27 cm) by applying light thumb pressure at a point midway between the cylinder sprocket and the idler sprocket.

IMPORTANT: After a tumbler has been in operation over an extended period of time, a “HIGH POINT” will develop on the cylinder drive sprocket through use and wear. Turn the sprocket manually with drive chain in place until this “high point” is at the top center. The “high point” can be found by noticing increased chain tension while slowly rotating the cylinder sprocket manually.

1.Remove guard from rear of tumbler.

2.To adjust chain tension, loosen acorn nut holding idler sprocket to housing.

3.Move idler sprocket left or right until proper chain tension is reached, then retighten the acorn nut.

4.Replace the guard on rear of tumbler.

BELT DRIVE

Nonreversing Models

Refer to Figure 21.

Proper tension is when the drive V-belt can be depressed approximately 1/2 inch (1.27 cm) by applying light thumb pressure at a point midway between the sheave and motor pulley.

1. Remove guard from rear of tumbler.

2.To adjust belt tension, loosen idler housing bolts holding idler housing assembly to the housing support.

3.Position housing assembly by turning adjusting bolt until proper belt tension is reached, then retighten idler housing bolts.

4.Replace the guard on rear of tumbler.

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