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Admin AEL-list tools repair locker APL-equipment fixed to the hull/vessel Mica * (management datarmation kind allowances) tailored to a specific individual building block or unit class * Parts of mica 1. voice a- equipment nomenclature sequence- list of apl/ael-sorted by equipment 2. Section b- hsc description sequence- list of apl/ael-sorted by structure coed 3. Section c- hsc code sequence- list of apl/ael-sorted by HSC 4. Section d-apl/ael number sequence- list of apl/ael-sorted by apl/ael number FED log * Made up in both files . Interactive query coast guard only uses this one used as datarmation re reference work 2. flowerpot file * Wild card is the ability to search characters or numbers * Data view bar provides quick links to different screens in federal official log * Icon (magnifingglass)Characteristics data response- provides description information * Icon (man) Management Data response- provides the service/agency CMPLUS * Supports unit communicate mission * Take somatic from chronicle you must do an initial request * Inventory * Initial requests * Initial requests * Orders Receipts * Suppliers allowances * Group inventory OPFAC- identifies each Coast Guard unit Surflog * Fill out a surlog 1. Department coed 2. Opfac 3. Cog code 4. Stock number 5. Unit of issue 6. Nomenclature andsupplier 7. Quanitity needed 8. Cost * federal supply placement * keep track of how much money you have expended * identify what is ordered and what has been recived * if you are copying information from old surg log confirm info in fedlog. Procurement request- form dot f 4200. 1. 2 cg- commercial suppliers MPC- PMS detail instruction card E. A-M-3356(A=auxiliary M=monthly 3356= denomination number) M-main propulsion machinery A-auxiliary E- galvanising R-damage control NEM- m9000. 6 ELC website -submit a change Engineering dept shall maintain single tag-out log Tag out- comdtinst 9077. 1 * Check and studys once both two weeks by cognizant dept * Tag numbers shall start over OCT 1 * Size of the vessel determines the number of tag-out logs required * Replacing a missing tag- coterminous sequential number on tag out sheet * Check correctly installed visual compare- tag out record sheet and tag audit Recommend change in PMS procedures must In written form * Given to the PSM coordinator FPD( financial and procurement) provides acquisitions and accounting First quarter- is oct-dec Take material from inventory you must do an initial request TACHOMETER Tachometer- is an instrument that generates, transmits, and indicates info that is converted into a measurement of rotation speed Verify reading against info found on nameplate data 4 references of Tachometer 1. Chronometric Tachometer, accessible shaft, press and release start button, displays after 5sec 2.Centrifugal tachometer, continuous reading of rpms on accessible shaft 3. Resonant tachometer, vibrating, when shaft is not accessible 4. Photo-electric tachometer, battery operated, non-c ontact(place reflective tape on shaft Calibration done- 12 to 18 months, sticker has last calibration and due date Frequency = number of rungs in a pre narrow time F (Hertz) = number of magnetic poles X rpm/120 Rpm=120 X f/ no of poles Transducers Pressures Transducers- convert bosom into an electrical output signal that is proportionate to the enter pressure.Always take hold permission prior to troubleshooting, isolate from the pressurized system Replace with same type or a spicyer grade King nutronics- 2250 psi Uses 4-20ma so it propel longer distances Dont zero and span to compensate reading Easily manipulated Prone to interference Troubleshooting- verify transducer is the problem Resistance Temp sensing instalment RTD (resistance temporary detector) temp sensor whose electrical resistance changes linearly with change in temp RTD is connected to wheatherstone bridge Two elements with separate temp suppose 1.Nickel -40 to 1000 degree for all configurations 2. Platinum -40 to 1000 degree for thermowell, bare bulb and embedded configuration Two wire sensing element red and white * needs compensation move Three wire sensing elements 2whites and red* no need compensation Three types of RTD configurations 1. 5sec. embedded( oil use up temp in machinery bearing) 2. 8sec. Thermowell ( high pressure) 3. 15sec. Bare Bulb directly immersed in high pressure gas Thermocouple Thermocouple is device to measure temp as temp changes a electrical potential in MV is generated Used in pyrometerAir temp change in a cutting junction will cause erroneous reading Cleaning approved solvent, checking loose or dirty connection, calibrations UAW tech manual by manufactures Two conglomerate metals that is referred as HOT JUNCTION(thermocouple sensor) Two dissimilar metals become similar is Cold junction (reference junction) Two type of therocouples 1. Type K, chromel(+yellow) Alumel (-Red) 2. Type J, Iron (+white) constantan (-Red) selsyn Two types of damping methods 1 . Electrical 2. MechanicalHighest value of effective electromotive force induced in one stator coil is 52v Rapid and accurate transmission electromagnetic induction Two general classifications 1. Troque -moves light loads like dials 2. Control -heavy loads gun directors Two common synchro rotors or windings 1. Salient pole rotor 2. Drum or wound rotor Synchro resembles small electrical motor operates like a variable transformer NEVER connect 400hz synchro to 60hz voltage Operating voltage and frequency is mark on name plate Military standard and navy prestandard synchros- one hundred fifteen vac or 26vac Load dictates the type of synchro and systemBy reversing s1 and s3 both synchro motors turn the same amount, in opposite directions Change S2 causes 120 degree error it reverses the direction palpitation and spinning of the pointer 1. Stator winding are shorted 2. Defective damper Reversal R1 and R2 180 degree error rotation remains the same Damping circuit prevents gear train oscillations or spinning Common zeroing methods 1. AC Voltmeter method( most accurate) 2. Electrical-lock( fastest) Rotor gets voltage by original winding excitation Stator gets voltage from the Rotor by magnetic coupling GYRO Heading, roll and pitchTransmits info to weapons control, sonar radar, depth control, dead reckoning Gyrocompass has two basic properties 1. rigidity in space(rigid, no force) 2. Precession(right angle, applied force) MK27 1. Consists of master compass, electronic control unit and king converter 2. Seeks true north 3. ECU-operating control-servo Amplifier-alarm Circuitry-power supply-latitude control circuitry 4. S-1 switches- Slew, Start, Run- manual or political machine 5. E- core pickoff- generates signal from proportional to gyro from null 6. J3 test points- master compass 7.Full wave bridge rectifier rectifies AC to DC 8. Choke input filter-creates smooth DC voltage Anemomter Wind direction(HD) and speed(HE) indicator relative to ships heading and spe ed Wind speed indicator- visual indication of wind speed and direction(single variant 115vac) Voltmeter is used with anemometer Wind speed indicator(HE) transmits signal voltmeter(magneto) Capacitor prevents RF interference or reduces stator topicals Set emits RF interference defective capacitance at rear, replace for magneto Remove 2300 ohm resistor from both sides when using to indicators SalinityFresh piddle contaminated excess of 0. 25 grains of sea brininess per gallon alarm will go off (audio&visual) After the solenoid is de-energized it must be manually reset Dumper valve solenoid de-energized when impurities reach alarm proportions diverting water overboard Cell test resistor- small portable unit with contact fingers System test & cell inspection- monthly Inspection- bi-monthly Thermistor- temp sensitive resistor which limits current flow across the gap between the plates Salinity Module test/ foundation- 23 vac across tp1- tp2 gaps shorted cell/wiring ciruit VLA) Visu al Landing Aids Helo deckarea marker- Lighting-Approach help Wave off lights- cue to pilot landing is unacceptable Wave-off light will not extinguish when wave-off switch is secured command is world sent from remote panel Homing beacon -white lamp-main mast-flashes 90x per min Lamp circuit- wired step down transformer(115/32 volts) to variable dimming circuit Line-up- lights-20 lights-white and flash in sequence- uni or bi-directional VLA power requirements lighting system 120v/60hz WIPERWindow wipers- DC voltage, taking 115vac single-phase using full-wave bridge rectifier Oil to external oil cup lubs the brushes Replace every 3000 hours or two times a year Life span is one year Drive mechanism- converts the rotation of the motor to go back and forrad Pendulum window wiper-wiper switch to park (to place wiper out of view) Steering To determine rudder rate a HARD-OVER- TO HARD OVER command is given enchantment ship is moving in max speed. Overtravel-is a steering position on rudd er beyond the order angle and remains at that position Overshoot- few degrees beyond the older angle but returns to the order angleThree modes of operation of steering system 1. Follow up 2. Auto pilot 3. Non win up Four components 1. Hydraulic system-hydraulic power units and rudder actuators 2. Emergency equipment 3. Rudder position feedback system 4. Steering controls Control circuit- generates an electrical signal to move the rudder Hydroulic power unit(HPU) ports hydraulic runny to the actuator Actuator turns hydraulic power into mechanical motion Steering force of water acting on the rudder Solenoid valve- controls hydraulic fluid to the actuators- to move rudderUses hydraulics to control rudder because of the high torque to-weight ratio Maximum error allowed on rudder angle is + or -2 Battery Normal temp-80f degrees Initial a low-rate charge given to a new-fashioned battery Normal Routine charge IAW nameplate data Emergency a fast or boost charge Equalizing extended normal charge given at a specific gravity Floating voltage maintained within the limits of 2. 13 to 2. 17 volts per cell Polarization index test Determines condition of windings through a chart Brushes * Never mix brushes-rapid brushes wear could happen when mismatched * Replace if worn 1/8 inch Seat brushes in brush holder with 80grit sandpaper * Brush holders are the same distance from the commucator- no more then 1/8 no less than 1/16 unless said by manufacturer Air Gaps * distance thousands of inch between stator and rotor * measured with machinist tapered feeler eager * reading within 10% Bearings * never use a naked flame to heat a shaft bearing or housing * two methods to remove bearings 1. arbor press 2. puller method * three method to install bearing 1. arbor press 2. puller method 3. hammer with an appropriately size tube lubricated and sealed at the factory * antifriction bearings 1. radial 2. angular contact 3. thrust * heated in oven, furnace, or oil- at 203+/- 10degrees to lard the inner ring for assembly * hot confederation- operating temp * cold alignment-room temp * Alignment check are required under the following conditions a. Upon installation b. Base or foundation is repaired c. Any action done to bearings or motor d. When specified by PMS * Preferred inwardness shaft alignment is the indicator reverse method * Dial indicator shows . 04 or more movement and soft foot exists * Soft foot condition has not ameliorate after two corrections a bent foot exist * Four approved alignment methods 1. Rim and face 2. Indicator reverse 3. Close-couple pump 4. Straight edge/ feeler gauge POWER Breakers * AQB breaker for generator patchboards * ACB (air circuit ledgeman) commonly installed in cutter switchboards * NLB have no self-moving tripping device, it uses on/off switch * NQB have no automatic tripping device, it uses circuit isolation and manual transfer applications. Selective tripping of breakers is normally accomplished with a short time-dela y feature * No authorized changes should be made to trip settings on a breaker * Purpose of switchboard circuit breakers are 1. Circuit protection 2. Circuit isolation 3. The normal switching operation of an electrical circuit For funds or silver alloys contacts maintenance 1. Fine file or sandpaper NO. 00 fine sandpaper is used to clean For copper contacts 2. Never use emery cloth drop-off contact forces may cause Overheating of the contact trips( loud humming or chattering is the warning)Power factor = kw/kva * Kva-apparent power * Kw-true power- the power in truth used (uses a wattmeter) Reverse power relay-reverse current rating setting 5% for 10seconds Voltage regulator senses output voltage To obtain 100% power factor circuit must be purely resistive Uninterruptible power supply (ups) protects system from low voltage brown outs Motor generator (MG) is electrical motor that turns a generator (supplies regulated type111 electrical power to system) Motor generator output-120v, three phase, 400hzINDICATOR LIGHTS * White mg power is available * stern generator circuit breaker is closed * Yellow mg is in use on the other circuit * Clear ground in the system/synchronizing * Red danger * Green normal Hysteresis loss, caused by friction develop between magnetic particles as they rotated though each cycle The primary windings of a current transformer should be connected in the line carrying the current to be measured One terminal of the secondary should be groundedlogarithmic negative temp coefficient- an increase in temp but decrease in resistance Positive temperature coefficient- an increase in temp and increase in resistance Negative temperature coefficient- an decrease in temp and decrease in resistance Only 450m 3phase 3 wire system ungrounded shore power source is acceptable for supplying electrical power. Darsonval effect- through coil-magnetic field-repel or retract from coil magnetism Selective tripping- time delay source breakers 2301= 4 to 9 terminal MK 27 GYRO COMPASS IS A DIRECT READING COMPASS.SEEKS AND CONTINUOUSLY INDICATES THE MERIDIAN OR TRUE NORTH TWO prefatory PARTS OF THE MASTER COMPASS IS THE BINNACLE AND THE BASE ELECTRICAL CONTROL UNIT (ECU) OF THE MK 27 HOUSES OPERATING CONTROLS, FOLLOW UP SERVO AMPLIFIER, ALARM CIRCUIT, POWER SUPPLY, AND parallel CONTROL WHAT CIRCUIT DESIGNATION FOR AN AIR FLOW ALARM HF COMPONENTS OF AN ALARM INDICATOR SYSTEM ARE SUPERVISORY CIRCUIT, ALARM CIRCUIT, ALARM DEVICES take up UNIT CONVERTS ROTARY MOTION OF THE DRIVE MOTOR INTO A BACK AND FORTH MOTION IN A WINDOW WIPING SYSTEM PENDULUM POWER REQ 115 VOLTS, SINGLE PHASE AC SYCNCHRO CAPSITORS MAINTAINS ACCURACY IN selsyn SYSTEMS.ALSO REDUCES STATOR flowingS M. I. C. A DESIGNATED TO A SPECIFIC UNIT FPD PROGRAM PROVIDES SIMPLIFIED achievement AND ACCOUNTING FUNCTIONS FOR LARGE UNITS OF THE COAST GUARD PRIMARY POWER FOR COAST GUARD 450 VOLT, terzetto PHASE, 60HZ SECONDARY POWER FOR COAST GUARD 120 VOLT, THREE PHASE, 60HZ, TWO WIRE GROU ND DETECTOR CANNOT DETECT GROUNDS THROUGH A TRANSFORMER POSITIVE TEMPERATURE COEFFICIENT THE RESISTANCE INCREASES WITH TEMPERATURE WATER INSIDE TRANSDUCER IS FROM EITHER FROM strumIDIDTY OR limpid FROM THE SYSTEM LEAKING BY THE DIAPHRAGM ADVANTAGE FOR USING A 4-20MA SIGNAL IN A TRANSDUCERIT CAN BE TRANSMITTED WITH LITTLE TO NO flutter THREE LEAD RTD DOES NOT REQUIRE A COMPENSATION CIRCUIT REED SWITCH USED IN FLOODING ALARM SYSTEM BEARINGS DISASSEMBLING PRELIMINARIES forwards DISASSEMBLING, MATCH MARK ALL ADJACENT PARTS INCLUDING END BELLS, STATOR FEET, CARTRIDGE COVERS, END CAPS, AND COUPLING HALVES, SO THATTHEY ARE REMOUNTED IN THEIR EXACT victor POSITION DUMP VALVE MUST BE RESET MANUALLY FUNCTION OF THERMISTOR ON THE SALINITY cellular telephone A TEMPERATURE SENSITIVE RESISTOR WHICH LIMITS THE CURRENT FLOW ACROSS THE GP BETWEEN THE PLATES PREVENTATIVE MAINTENANCE FOR SALINITY SYSTEMMETER CHECK (DAILY), ALARM TRIP LEVELS (WEEKLY), SYSTEM TEST (MONTHLY), CELL INSPECTION (MONT HLY), CELL VALVE INSPECTION (YEARLY), SYSTEM INSPECTION (BI- MONTHLY) POWER REQ FOR ANEOMETER 115 VAC, 60 HZ Term First Both Sides TROUBLE SHOOTING SYNCHRO SYSTEMOVERLOAD INDICATOR LIGHTS, UNITS HUM AT ALL TX SETTINGS, ONE UNIT OVERHEATS, TR FOLLOWS SMOOTHLY BUT READS WRONG (ROTOR CIRCUIT OPEN OR SHORTED), OVERLOAD INDICATOR LIGHTS, UNITS HUM ON TWO OPPOSITE TX SETTINGS, BOTH UNITS GET WARM, TR TURNS SMOOTHLY IN ONE DIRECTION, THE REVERSES (STATOR CIRCUIT OPEN) preventive maintence comdtinst m9000. , scheduled mpc serial numbers are maiden component is system it belongs to and 2nd is the frequency adding oil to the external cup lubricates the bushings components of the steering system are steering controls, hydraulic system, rudder feedback system, emergency system primary mode for the steering system is hydraulic and electric Pressure senseing element converts gas or liquid energy into pschycal(mechnical) displacement Pressure snubber is a pressure transmitting device that restr icts the rate of fluid flowing to a pressure senseing instrument and as the result, the rate f pressure changes