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Topic starter
24/06/2024 10:30 pm
Hey guys... I am a loss investigator for an insurance company doing a review of some operational issues with a DOVER DMC 3 stop elevator.
The building where it is installed experienced a commercial power surge which blew out the power regulation circuitry on the CLC board (Pics attached)...
The service company came out and replaced several boards in an effort to repair the lift. They also changed out the power supply. The lift works fine in manual inspection mode, but when switched to automatic, it blows the F1 fuse almost immediately when engaged to move up...
The service company is at the end of their efforts to repair it claiming that they cannot solve the problem. The lift is located in West Columbia SC and I am looking for a tech that would be willing to travel there and attempt the repair.
Any takers?
25/06/2024 3:53 am
Couple things…
Believe it or not, that heat “damage” up there is actually normal for those boards. Not saying something didn’t actually fail or short there but, in general, you don’t replace those boards because of that.
The connections to the CON11 MTA connector need to be re-done with the proper tool.
That software from the old board is not compatible with that new BP4 CLC card. Inspection on a DMC is entirely relay logic so that CLC may not even have its watchdog LED on.
My first thought from your description, before looking at the pictures, was a shorted up fast valve coil but that would require the car to be on automatic.
Can’t help you with actually fixing the elevator except to suggest you call TK Elevator.
Believe it or not, that heat “damage” up there is actually normal for those boards. Not saying something didn’t actually fail or short there but, in general, you don’t replace those boards because of that.
The connections to the CON11 MTA connector need to be re-done with the proper tool.
That software from the old board is not compatible with that new BP4 CLC card. Inspection on a DMC is entirely relay logic so that CLC may not even have its watchdog LED on.
My first thought from your description, before looking at the pictures, was a shorted up fast valve coil but that would require the car to be on automatic.
Can’t help you with actually fixing the elevator except to suggest you call TK Elevator.