FIGURE 2-11. Functional Elements, Rotary Liquid Piston Compressor
fresh oil. Remove shaft packing. Turn the compressor over by hand once a
week to keep a coating of oil on the bearings.
5 OPERATIONAL PREVENTIVE MAINTENANCE. Operational preventive maintenance
shall include the following tasks.
(a) Never run a liquid piston compressor dry. Operation without
sealing-water results in serious damage to the compressor.
(b) Maintain correct sealing-water flow rate. Insufficient sealing-water
will result in a loss of capacity. Excess sealing-water overloads the
compressor drive. Consult the manufacturer's instructions for correct
(c) Do not overtighten the packing on units with stuffing boxes. This
results in rapid packing wear and scoring of the shaft.
6 PREVENTIVE MAINTENANCE INSPECTION. The following inspection schedules are
adequate for average installations.
6.1 Daily Inspection. The operator shall inspect the compressor installation
daily for the following conditions:
(a) Unusual noise or vibration
(b) Abnormal discharge pressures
(c) Overheating of motor