36C25719Q0330-004.docx

PREVENTATIVE MAINTENANCE INSPECTION AND SERVICE CHECKLIST

CHECKLIST NUMBER: 1 FREQUENCY OF SERVICE: WEEKLY

ELEVATOR 'DUMBWAITER SYSTEMS COVERED: ALL

1. HALL STATIONS AND LANDING LIGHTS: Check all button contacts, springs, and wiring. Clean and lubricate as necessary. Repair or replace defective parts. Check landing lights and replace burned- out lamps.

CHECKLIST NUMBER: 2 FREQUENCIES OF SERVICE: SEMI-MONTHLY

ELEVATOR/DUMBWAITER SYSTEMS COVERED: ALL

1. Review the performance of the elevators with the Government Representative to determine if any malfunctions have occurred in connection with the cars since last maintenance inspection was performed. Investigate any mal Functions, which have occurred, devoting special attention to any problem involving unsafe operations, and take corrective action.

2. LUBRICATION: Check quantity and quality of oil in all reservoirs, such as crankcases, gearboxes, buffers and oil cups. Add oil to maintain satisfactory levels. Replace oil if dirty. Applies to motor generator sets (sleeve bearings) and motor bearings.

3. CAR OPERATION: Ride all cars to detect and repair any improper operation of the car doors, hoist way doors, acceleration, leveling accuracy of floor stops, and the action of the machine brake. Verify proper operation of the retractable door edges. Examine the car station and call buttons and replace damaged switches, burned-out lamps, and broken buttons.

4. CONTROLLER AND SELECTOR PANELS: Observe the operation of all control relays, contactors, and other devices for satisfactory operating sequence. If any contacts are exposed to excessive current, check the circuit, correct the cause, and replace burned contacts. For the safety of the elevator users, do not work on relays which affect the operation of the car or power operated doors while the car is in service. Make a visual inspection of magnet coils, relays, and contactors, devoting special attention to the coils of relays that are continuously energized. Replace any coils that have brittle insulation or cracked binders. Observe and check the floor selector, adjust as necessary, and lightly lubricate.

5. BRAKES: Examine and adjust the brake plunger so that it is free and that it operates to the full extent of its travel. Clearances between the brake shoes and the drum shall be maintained at a minimum. Examine the brake contacts for wear and adjust or replace. Clean brake drum pulley. Prevent any loose material from catching between the drum and brake shoes.

6. GENERAL CLEANING: wipe down the hoisting machine and generator. Check for excessive heat and unusual noises during operation. and correct the causes. Remove dirt and dust from the motor and generator housing. Brush off copper and/or carbon dust that may have collected on the control and relay panels. Clean the pit of all debris and combustible material. Clean the top of the car and the machinery room floor to insure proper door operation. Remove lubricants, cleaning solvents, and other combustible solutions if any are found to be stored in these places.

Attachment 3 Preventative Maintenance Checklist 36C25719Q0330 7.

CHECKLIST NUMBER: 3 PAGES: 1 of 2 FREQUENCIES OF SERVICE: MONTHLY

1. LUBRICATION: Check quantity and quality of oil in all reservoirs, such as crankcases, gear boxes, buffers, and oil cups. Add oil to maintain satisfactory levels. Replace oil if dirty. Applies to motor generator sets (roller bearings), worms and gears, governors, gearless machines, car door hangers, secondary sheaves (sleeve bearings), selector segments, brake pins and linkage, and door and gate operators.

2. GOVERNORS: with power removed from the controls, trip the governor by hand to see that all parts of the mechanism operate freely. Check for loose pins, bolts, and anchors. Examine and clean the overspeed safety switch contacts; check for proper operation and adjust if necessary. Lubricate the governor shaft and bearings and adjust or replace worn parts.

3. CAR DOOR OPERATORS: Examine and clean door operator motors, examine moving parts connected to the door operators; tighten loose screws and bolts, and replace worn pins and bearings. Examine the door gibs; if they bind in the threshold groove, the gibs shall be removed and cleaned.

4. RETIRING CAM: Examine the retiring cam for worn pins and bearings, loose bolts, and missing locking rings. Examine the clearances between the cam and door switch lever rollers and adjust if necessary for proper operation.

5. WIRE ROPES AND FASTENINGS: Examine all steel and iron ropes and fastenings on the car, counterweight, and governor. Ropes that have broken wires will require closer examination. Notify the Government Representative of adjustments made and of unsafe conditions found before leaving the job site on the day of this inspection. A determination to replace any wire rope will be made by the Government's certified safety inspector. The tension of hoist and compensating ropes shall be checked and adjusted if necessary to ensure they are alike.

6. TRAVELING CABLES: Examine all traveling cables to see if there is evidence of wear due to rubbing against any operating beams, walls, or the car platform. All bare spots shall be covered with electrical tape to prevent further damage. Adjust the cable loop to avoid striking the pit floor and ensure that the loop travels through the hoist way without any twisting motion or interference.

7. COUNTERWEIGHTS AND COMPENSATORS: Inspect and adjust the clearance of the counterweight at the buffer with the car stopped at the top floor landing. Check the clearance between the compensator and the pit floor to determine if the ropes on either the counterweight or on the compensator need to be shortened. Examine and adjust the compensating sheave and sheave bearings. Lubricate sheave bearings.

8. MOTORS, REGULATORS. GENERATORS. AND EXCITERS: Maintain all brushes so that they are free to move in their holders and make satisfactory contact with the commutator. Check the brush spring tension and replace all brushes with new brushes of the same size and grade. Clean carbon dust from the brush holders and insulators. Wipe off the commutator, but do not sandpaper it. If the carbon dust cannot be completely removed from the commutator by wiping. the undercut slots shall be cleaned. Shorted conditions between the commutator bars shall be corrected. Maintain the commutator in an oil-free condition. Check motors, generators, and exciters for vibration or unusual noises in the bearings. Oil or grease bearings unless they are of the permanently sealed type. Defective bearings shall be replaced.

9.

10. RETRACTABLE SAFETY DOOR EDGE: Examine all moving parts of retractable door edge for loose screws, bolts, worn pins, bearings, cams, and rollers. Inspect the trail cable for wear and adjust to prevent rubbing any door edge contacts and switches; and adjust for proper operation. Repair or replace defective parts.

11. CYLINDER PACKING GLAND: Examine the cylinder packing gland tor excessive leakage and tighten or replace packing when leakage cannot be corrected by tightening the gland.

12. OIL COLLECTION CONTAINERS: Empty the Oil collection container during each maintenance inspection to prevent oil from leaking into the pit.

13. HYDRAULIC PUMP UNITS: wipe down the pump and motor. Examine all bearing surfaces for excessive heat and unusual noises while the pump unit is running and adjust or repair to correct any deficiencies found. Any oil leakage that develops at the pump and/or piping system shall be corrected.

14. CAR: Check alarm bell and communication system (if one is installed). Check the emergency switch. Check operation of leveling switches and repair or adjust for proper operation.

CHECKLIST NUMBER: 4 FREQUENCIES OF SERVICE: QUARTERLY

1. LUBRICATION: Selector guides (sheaves), equalizer, guide rails, governor cable tension sheaves, oil buffers, regulators and small control motors, and terminal floor hangers

2. HOISTING MACHINE: Inspect. If cutting of the drive sheave or secondary sheave grooves is evident, causes shall be corrected. The hoisting ropes shall be lightly lubricated, and other corrective action taken. Maintain the required oil level in the gear housing. Check the gear backlash. thrust endplay n and bearing wear. Repair Oil leaks.

3. DOOR INTERLOCKS: Pull on each hoist way door from the corridor side while the car is running to verify that the doors are securely locked and that the car does not stop because of an interrupted door contact circuit. Test the door contact circuit at the control panel for grounds and high resistance shorts using an ohmmeter. Make visual and touch examination of door interlocks to ensure that there are no loose parts. Adjust or replace parts as required for proper operation of all door interlock components. Improper operation of door interlock components shall be corrected.

4. GUIDE SHOES AND ROLLER GUIDES: Inspect the operation of the guide shoes or roller guides. Replace worn and replace worn or eccentric wheels.

5. HYDRAULIC OIL HOLDING TANKS: Run the car up and down and observe the oil level at each extreme of the car. Add oil if necessary to ensure satisfactory levels. Replacement oil shall comply with equipment manufactures specifications.

6.

CHECKLIST NUMBER: 5 FREQUENCIES OF SERVICE: SEMI-ANNUAL

1. LUBRICATION: Door control cams and gears, machine leveling and stopping switches, slowdown and limit switches, guide shoes, hatch door hangers, motor generator sets (ball bearings), and auxiliary sheaves (ball bearings).

2. CONTROLLER: with the main Line switch disconnected, operate each contactor and relay by hand. Adjust all control relays to ensure wiping action across the contacts. Replace all loose rivets and screws, adjust air gap if excessive, and ensure that there is no friction in the relay movement. Inspect the hinge pins and stop plates and replace those that are worn. Examine the shunts and replace those, which are frayed or otherwise indicate that the shunts may soon break down. Check all heavy wire terminals for tightness, including those connected to overload relays. Tighten all nuts and bolts, which hold resistance grids tight to each other. Clean contacts of relays, which seldom operate such as, overload relays, reverse phase relays, and protective relays - Check oil in overload relays, settings, and operation of overloads Clean and check fuses and holders.

3. SLOW-DOWN AND LIMIT SWITCHES: Remove covers and clean out switch boxes. Examine contacts; clean and adjust as required, Maintain all moving parts free from friction and noisy operation. Check the setting of slow-down switches by operating the car into a terminal landing. If slowdown control is insufficient, and the car goes past the terminal landing far enough to create hazard to passengers, then make corrective adjustments and/or repairs

4. HOISTWAY DOOR EOUIPMENT: Clean all grease and dirt from hangar tracks Lubricate as recommended by the manufacturer. Check and adjust up-thrust rollers When applying fresh grease to the tracks, ensure that the grease does not get into the door interlock bridge contacts. Examine the hangar fastenings to see that all parts are secure. Check the door gibs and replace those, which are worn. Clean and lubricate and examine the door arm; check for loose pins and bolts and worn or cracked castings. Correct deficiencies found.

5. HOISTWAY: Clean all hoist way equipment such as secondary sheaves and beams, car and counterweight guide rails and brackets, limit switches and their brackets, supporting beams, counterweight, car sides, and safety mechanism. Tighten all loose rail bracket bolts. Adjust all ropes and rope fastenings and hoist way conduit, as cleaning operations progress down the hoist way. Adjust the car sling for loose bolts, car steading plates and brackets. Clean and fill the lubricator pots and wicks where provided.

6. INDICATOR DIALS AND PULLEYS: Ensure satisfactory lubrication.

7. CAR: Check stile channels, car frame, cams, and supports for bends and cracks. Check car enclosure steading plates. Check safety clearances.

8.

CHECKLIST NUMBER: 6 FREQUENCIES OF SERVICE: SEMI-ANNUAL ELEVATOR/DUMBWAITER SYSTEMS COVERED: ALL

1. LUBRICATION: Car station (mechanized dials) safety car and counterweight) hatch door mechanisms, and roller guides. Replace oil in gears, gearboxes, crankcases, buffers, oil cups, bearings and door operators.

2. MACHINE BRAKE: Remove the brake plunger; clean the plunger and sleeve with solvent. Clean with emery cloth if surfaces are rough. If the brake sleeve is worn to the extent that the brake plunger rubs on the coil housing the sleeve shall be replaced. To examine the brake lining, land the counterweight, remove the spring tension from the brake arms and move the brake arms away from the drum. Linings which are worn or oil-soaked shall be replaced. Ensure the rivets holding the linings to the brake shoes are tight and that none are likely to rub on the brake drum. The ball sockets or pins of the brake shoes shall be cleaned and lubricated when reinstalled.

CHECKLIST NUMBER: 7 FREQUENCIES OF SERVICE: ANNUAL ELEVATOR/DUMBWAITER SYSTEMS COVERED: ALL

1. LUBRICATION: Car station (mechanized dials), safety (car and counterweight), hatch door mechanisms, and roller guides. Replace oil in gears, gearboxes, crankcases, buffers, oil cups, bearings and door operators.

2. MACHINE BRAKE: Remove the brake plunger; clean the plunger and sleeve with solvent. Clean with emery cloth if surfaces are rough. If the brake sleeve is worn to the extent that the brake plunger rubs on the coil housing, the sleeve shall be replaced. To examine the brake lining, land the counterweight, remove the spring tension from the brake arms and move the brake arms away from the drum. Linings which are worn or oil-soaked shall be replaced. Ensure the rivets holding the linings to the brake shoes are tight and that none are likely to rub on the brake drum. The ball sockets or pins of the brake shoes shall be cleaned and lubricated when reinstalled.

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