Page 383 - Practical Machinery Management for Process Plants Major Process Equipment Maintenance and Repair

362 Mujor Process &u@rnent Maintenance and Repair

Table 8-5
Normal Oil Pressure and Temperature Ranges
for Condensing and Noncondensing Turbines

Notes
1. These guidelines are not intended to supersede the original manufacturer’s rec-
ommendations. It is the intent to indicate the general service requirements and
leave the particular recomrnendatlons to the OEM.
2. Column “A” provides the general guidelines for turbines lubricated by a turbine
shaft driven pump or by the driven machine.
3. Column “B” shows the acceptable general guidelines for turbines lubricated from
gear oil systems.

troubleshooting guide in Volume 2 for possible causes and correc-
tive actions for abnormal conditions.
6. When the turbine is thoroughly warmed up and operation is deter-
mined to be satisfactory, check that all drain valves are open and
gradually increase the speed. Increase the speed with the governor
speed adjustment until the turbine is operating at the rated speed
shown on the turbine nameplate. (Adjust the governor as outlined in
Governor Operation, Chapter 11.) Continue to check the turbine
for unusual noises, rubbing, vibration or other signs of distress. Do
not continue to operate if any of these conditions exist. See the trou-
bleshooting guide in Volume 2 for possible causes and corrective
actions for abnormal operating conditions.

Note: If the turbine is pressure lubricated, the oil pressure should
be 7 to 9 psig (0.5 to 0.6 bar).
7. Check the overspeed trip by overcoming the governor to actuate the
overspeed trip mechanism. Refer to Governor Operation for spe-
cific details on overspeeding the turbine.