Elevator Forum

Just a thought if a brake lining is touching somewhere on the brake pulley,as the day goes on the pulley slowly heats up and expands so more and more ...

Determine if the fault is at the top or bottom and adjust the mi + at the top or mi- at the bottom. The NTS board has pots to adjust voltages on rail ...

if I remember correctly the resolver tells the controller exactly where it is pertaining to the 360 degree's on the drive sheave. lets say the resolve...

I agree with replacing the Tach, or check the wheel and coupling on the Tach, then if they are ok, replace the Tach.

If you swap boards you need to do a Lon download.its not a big deal 5-7-1 change the 0 to 1 and the controller runs the download sequence, when its do...

if my fading memory serves me, if you have hoistway access, the firemans service switch at the main floor plugs into the Lcehas board in the duct.Not ...

it can be the floor board in the duct. however if you replace a board , if memory serves me, you have to perform a lon download for the controller to ...

if you have access to another adon , change it out. a lot of intermittent problems are from the early adon boards.you can't replace the relays on thos...

cs has to pull in to stop, therefore Lr and sp have to pull in. The contact on cc and that pulls in sp is a suspect.

do you have a service tool?

HS Hdro's usually, but not always used the WG Door operator, the DS7 led goes low when the doors are closed. a 45 error says that your ss info is lost...

the LH time is 3-5 sec. when responding to a hall call, so 5 sec is max. when a photo cell is broken the time switches to SH time which is 2-3 seconds...

if the car light voltage is missing from the car top ccbn board, the car will shut down. you may want to check the voltage there. parameter 77 in menu...

if the bp on the valve is not set up properly it will push up past the floor on the soft stop timer. check the proper vave sizing adjustment. also too...

if your service tool won't let you do this you try pulling out the cpu and the io interface, make sure you have your door locks and safety circut and ...