Very unique machine saw it for possibly the last time before the new 7000s get commissioned. Would be interesting to see a video of the new machinery once in operation
I remember the Otis lifts that my dad serviced in Sunderland, UK and the contactors had strange V springs on the front. Quite innocuous I thought until my 12 year old brain pointed that several were not connected. Apparently this fixed the fault.
Built to last and they could do. The engineers who installed these are probably retired now and there’s not many of the new engineers who learn about these systems.
@@caroleast9636 Given the amount of downtime these lifts have had, I beg to differ. Out of the 4 lift cars - two hadn't worked in many years. The two remaining cars had faults almost constantly near the end. This upgrade HAD to happen.
One of the motors was removed and moved to the purple lifts to keep them all going due to a shaft failure, as soon as the replacement was ordered cost saving decisions were made about the old gear that would be coming out soon, that stuff could have run forever but parts are getting harder to find
DC machines are actually very efficient, however the standby power is much higher running a generator, keeping about 30 relays and contactors and the fields powered, all incandescent and not LED etc, so the savings will be there on the new equipment
No way! I work at the Hospital! wish I'd known you were involved with this!
Very unique machine saw it for possibly the last time before the new 7000s get commissioned. Would be interesting to see a video of the new machinery once in operation
My gosh, the sound of those gen-sets starting up!! Music to my ears
L then M Star - Delta Classic sound ✔️
I remember the Otis lifts that my dad serviced in Sunderland, UK and the contactors had strange V springs on the front. Quite innocuous I thought until my 12 year old brain pointed that several were not connected. Apparently this fixed the fault.
Yep I worked on that equipment as a service engineer for Otis for 30 years
Epic motor!!! I wish it was audible but the fan noise is in the way
Wow! Amazing that it is still orginal as of this video!
Not for much longer......in the process of being replaced currently - first 2 cars nearly ready.....other two cars to follow afterwards.
Built to last and they could do. The engineers who installed these are probably retired now and there’s not many of the new engineers who learn about these systems.
@@caroleast9636 Given the amount of downtime these lifts have had, I beg to differ. Out of the 4 lift cars - two hadn't worked in many years. The two remaining cars had faults almost constantly near the end. This upgrade HAD to happen.
One of the motors was removed and moved to the purple lifts to keep them all going due to a shaft failure, as soon as the replacement was ordered cost saving decisions were made about the old gear that would be coming out soon, that stuff could have run forever but parts are getting harder to find
How much less energy would a new lift consume?
DC machines are actually very efficient, however the standby power is much higher running a generator, keeping about 30 relays and contactors and the fields powered, all incandescent and not LED etc, so the savings will be there on the new equipment