What is a maintenance control plan? The maintenance control plan is the plan that the contractor has with the building to maintain the elevator system. It should give the owner, mechanic, inspector and anyone else involved a run down on how the elevator is maintained. It should be similar to a manual for your car/automobile. It will tell you the following:
2. Design and inherent quality of the equipment
3. Usage
4. Environmental conditions
5. Improved technology
6. Manufacturers' recommendations for any SIL rated devices or circuits
7. Cleaning, lubrication and adjusting schedule
8. Tests on the equipment & schedules per A17.1.8.6
9. Code required written procedures for maintenance, testing and inspections
10. Maintenance records
11. Procedures for testing
12. Unique product specific procedures required to test equipment
13. Procedures on how to maintain the specific elevator
For a list of all the requirements look at A17.1 8.6.1.2.1
1.1 – Visually inspect the jack synchronization ropes for any damage or excessive wear
1.2 - Visually inspect the synchronization rope sheaves for any damage
1.3 - Confirm the synchronization rope sheaves rotate without noise
Check synchronization rope lubrication
2.1 – Verify jack synchronization rope(s) has light lubrication present when checked with a clean cloth. If lubrication is required, the synchronization rope shall be lubricated with a 34-38 SSU light vicosity spindle oil
Check synchronization rope tension; adjust tension if required
3.1 – Run car up until the car is at its stop ring, check the jack synchronization deflection by hand. All rope adjustment must be made while the jack is fully extended.
3.2 – Verify synchronization rope(s)
- Has 1 Inch (25mm) deflection or less
- Does not have a slack wire rope condition present
- All have equal tensions, if more than jack synchronization rope is present.
3.3 - Set up top nut on the eye bolt toward its end and the bottom nut towards the eye to start with maximum adjustment upward. Loosen the rope clamps and pull the end of the rope to add as much tension as possible. Tighten the rope clamps and now tighten up on the top nut o the eye until the rope has less than 1 inch of deflection. Run the bottom nut up tight to the underside of the synch eam to lock in this adjustment. If the ropes are too close to the car, realign the eyebolts toward the back of the car. DO NOT bend eyebolts, as this could recreate an unsafe condition.
3.4 – Repeat this for the other rope (if present) setting them or roughly equal deflection.
3.5 – Run the car down off the stop ring and you will notice that the car adds additional tension to the ropes.4.1 – Check the wire rope diameter. The nominal size of each rope is .25 inch. Ropes must be replaced when the rope diameter measured at any point is less than .242 inch, reference table ASME A17.6 A7.6 1.10.3-1.
If replacement of synchronization ropes is required, use Schindler parts identified in the Schindler Renewal Parts Manual section 10C7 (or equivalent)
If you have any questions or would like additional information feel free to contact me at CraigZ@colleyelevator.com or 630-766-7230 ext. 107.
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