MAINTENANCE OF CONTROLS, INSTRUMENTS, AND SWITCHGEAR

Maintenance of Exhaust Pipes Elbows Gaskets and Thermocouples

Figure 3-23. Switchgear Access Panel (Sheet 1 of 2)

TM-9-6115-604-12 Generator Set Diesel Engine Driven Tactical Skid Rtd. 60 Kw 3 Phase 4 Wire 120/208 and 240/416 Volts Manual
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ARMY TM 9-6115-604-12 NAVY NAVFAC P-8-633-12 (5) Install exhaust pipes (11). (a) Position exhaust gasket (10) on exhaust pipe (11) roof flange and another exhaust gasket (15) on the exhaust elbow assembly (12) flange. Secure exhaust pipe (11) and exhaust gasket (10) to the roof using hexagon head capscrews (4), hexagonal nuts (6), and lockwashers (5). (b) With exhaust gasket (15) positioned in between, bolt the exhaust elbow assembly (12), to the exhaust pipe (11) using hexagon head capscrews (4), hexagonal nuts (6), and lockwashers (5). 3-17. MAINTENANCE OF CONTROLS, INSTRUMENTS, AND SWITCHGEAR. a. General. The equipment covered in this paragraph is located In the control room compartment situated at the rear of the generator set housing. The majority of the controls, instruments, and switchgear are contained in three separate cabinets: A, B, and C. Cabinets A and B contain generator controls and equipment, while cabinet C is used primarily for engine-related controls and instruments. Access to the equipment and wiring is provided through hinged, key-latched, front cabinet door panels and removable rear access panels. The front panels of all three cabinets can be opened from the control room itself, while access to the rear of the cabinets is through the generator section of the housing enclosure. interior roof and wall panels of the control room are lined with sound insulation material to reduce inherent noise levels caused by engine vibration during generator set operation. The noise damping provision also functions to minimize possible adverse effects of vibration on controls and instrumentation. b. Removal and Installation of Switchgear Access Panels. Access panels (see Figure 3-24) consisting of sheet metal and sound insulation material separate the switchgear from the generator compartment. To remove and install these panels, proceed as follows: NOTE Access panels must be removed in order. First, right and left outer panels then inner panels. (1) Remove. To remove any switchgear access panels (4 through 8), remove hexagon head capscrews (1), flat washers (3), and grommets (30). (2) Install. Install switchgear access panel (4 through 8), replace grommet (30), flatwasher (3), and secure with hexagon head capscrew (1). Do not touch exposed electrical connections when circuits are energized. DC CONTROL and UTILITY POWER CIRCUIT BREAKERS must be deenergized, MAINTENANCE LOCKOUT switch set to MAINTENANCE, main disconnect switch S120 is set to OPEN, and load cables placed in park position before starting any procedure. CAUTION Do not allow dry cleaning solvent P-D-680, Type II, to come into contact with exposed electrical components. Damage to the equipment could result from failure to observe this precaution. c. Control Room Heaters. H103 and H104. Control room area heaters H103 and H104 (see Figure 3-25) are controlled by circuit breaker CB118 (located in distribution panel DP2), integral switches, and temperature adjustment knobs. Adjust to attain desired temperature Inspect heaters for visible damage or evidence of scorching. Check security of mounting and wiring connections. 3-62

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