Inspection and Maintenance Instructions for 7FA.05 Gas Onl
and Dual Fuel Gas Turbine
GEK 116862
TABLE OF CONTENTS
I. AUXILIARY AND CONTROLS SYSTEMS MAINTENANCE - GENERAL ............................. 6
II. STANDARD MAINTENANCE ITEMS ......................................................................................... 17
A. Pressure Switches and Gauges ...................................................................................................... 17
B. Thermometers (Dial Type) ............................................................................................................ 17
C. Flowmeter ..................................................................................................................................... 17
D. Vibration Detectors ....................................................................................................................... 17
E. Liquid Level Indicators ................................................................................................................. 17
F. Panel Meters .................................................................................................................................. 18
III. CONTROL DEVICES ...................................................................................................................... 18
A. Temperature Switches ................................................................................................................... 18
B. Thermostats ................................................................................................................................... 18
C. Pressure Regulating Valves (VPRs) .............................................................................................. 18
D. Temperature Control Valves (VTRs) ............................................................................................ 19
IV. HYDRAULIC/MECHANICAL EQUIPMENT .............................................................................. 19
A. Relief Valves ................................................................................................................................. 19
B. Solenoid Valves ............................................................................................................................ 19
C. Servo valves .................................................................................................................................. 19
D. Check Valves, Orifices and Orifice Check Valves ....................................................................... 20
E. Lube Oil Filters ............................................................................................................................. 20
F. Hydraulic Supply Filters ............................................................................................................... 20
V. HEATING, COOLING AND VENTILATION .............................................................................. 21
A. Air Conditioners (where applicable) ............................................................................................. 21
B. Space Heaters ................................................................................................................................ 21
C. Load, and Turbine Compartment Vent Fans ................................................................................. 21
D. Fuel and Turbine Compartment Louvers ...................................................................................... 21
VI. MOTORS ........................................................................................................................................... 21
A. DC Motors ..................................................................................................................................... 21
B. AC Motors ..................................................................................................................................... 22
VII. COUPLINGS ..................................................................................................................................... 22
VIII. UNIT PIPING SYSTEMS ................................................................................................................ 22
A. Fuel, Oil, Water and Air ................................................................................................................ 22
B. Flexible Metal Hoses (FMH) ........................................................................................................ 22
IX. LUBE OIL SYSTEM MAINTENANCE ......................................................................................... 23
A. Lube System Oil Pumps ................................................................................................................ 23
B. Lube Oil Tank ............................................................................................................................... 23
C. Lube Oil Properties ....................................................................................................................... 23
D. Heat Exchangers ........................................................................................................................... 23
E. Lube Oil Immersion Heaters ......................................................................................................... 23
F. Mist Eliminator ............................................................................................................................. 23
G. Mist Eliminator Fan ...................................................................................................................... 23
H. Pipe Couplings .............................................................................................................................. 24
X. COOLING WATER SYSTEM ........................................................................................................ 24
A. Cooling System Checks ................................................................................................................ 24
B. Flow Checks .................................................................................................................................. 24
C. Flow Versus Pressure Drop ........................................................................................................... 24
D. Water Expansion Tank (if applicable) .......................................................................................... 25
E. Cooling Water Fan (if applicable) ................................................................................................. 25
F. Cooling Water Pump ..................................................................................................................... 25
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