Page 381 - Reciprocating Compressors Operation Maintenance
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366 Reciprocating Compressors: Operation and Maintenance
FIGURE 6-8. 75% of load. Acceleration level = 5.8 g. (Source: Bently-Nevada
Corporation, Minden, Nevada).
FIGURE 6-9. 100% of load. Acceleration level = 7.8 g. (Source: Bendy-Neva-
da Corporation, Minden, Nevada).
The inspection revealed a loose locknut on one of the piston rods. This
locknut locks the piston to the piston rod; the nut is secured to a specified
torque. The nut had loosened, allowing the piston to become loose on the
piston rod. This was the source of the hitting that was seen on the oscillo-
