ORGANIZATIONAL TROUBLESHOOTING

Table 5-4. OPERATOR/CREW PREVENTIVE MAINTENANCE CHECKS AND SERVICES, AUTOMATIC CONTROL MODULE

TM-5-6115-593-12 Power Plant Utility (MUST) Gas Turbine Engine Driven (AMERTECH Corp Model APP-1) Manual
Page Navigation
239

TM 5-6115-593-12 TO 35C2-3-463-1 level of maintenance. NOTE Before referring to table 5-5, be sure that all applicable checks have been performed. 5-18. OPERATOR/CREW MAINTENANCE OF THE AUTOMATIC CONTROL MODULE. This paragraph provides instructions to assist the operator/crew in maintaining the automatic control module. If defective components are noted during inspection, refer to next higher level of maintenance for replacement or repair. (See figure 2-19). a. Inspection. Inspect NORMAL POWER AVAILABLE lamp for loose mounting or loose connections. Inspect relays for loose mounting or loose connections. b. Replacement. Replace defective bulb in lamp assembly. 5-19. ORGANIZATIONAL TROUBLESHOOTING. Table 5-6 provides information for locating and correcting operating troubles which may develop in the generator set when used with the automatic control module. Each malfunction is followed by a list of tests or inspections which will help to determine probable causes and corrective actions to take. Perform the tests or inspections and corrective actions in the order listed. Any trouble beyond the scope of organizational maintenance shall be referred to the next higher level of maintenance. 5-20. ORGANIZATIONAL MAINTENANCE OF THE AUTOMATIC CONTROL MODULE. (See figure 2-19). a. Inspection. Inspect the under/ over voltage device, underfrequency device, overfrequency device, relays, timers, switches, and fuseholders for loose mounting, loose wires, cracking, or damage. If components are damaged or defective, and their replacement is beyond the scope of organizational maintenance, refer to the next higher level of maintenance. b. Testing the NO RETURN/TD RETURN/INSTANT RETURN Mode Selector Switch.. (1) Test the mode selector switch S1 by tagging and removing wires, then removing switch from panel. (2) Refer to FO-12 sheet and connect one lead of ohmmeter (set on low scale) to the arm terminals 11 and 21) of the mode selector switch. Connect the other ohmmeter lead to the terminal set for that position. Meter should indicate continuity for the set of leads, no continuity for all others. Repeat this step for the other terminals (rotate switch to corresponding position). If switch indicates an open or intermittent contact on any of the closed switch positions, or a closed circuit on an open position, replace switch. (3) Install switch with mounting hardware and connect wires. Remove wire tags. c. Testing Toggle switch. (1) Test the toggle switch by tagging and removing wires. NOTE The FREQ SELECT 50 HZ/60 HZ switch S2 must be removed from the panel for testing. (2) Using an ohmmeter (Rx1 scale), close switch and check for continuity. 5-15

Privacy Statement
Press Release
Contact