Home Forums General Discussion Technical Questions another 21ucl issue doors this time??!!!!

3 stop front and rear, door operator is a 6970 with the rheostats? front doors work fine no issue. rear doors.....if the car is at another floor and you hit the rear hall call the elev. will come get you and the door seam to work ok untill you break the light ray(older lamda bigger silver box) the doors will stall untill door protection drops then the will close no reopen? or if you say ride the elev. up to or down to a floor walk out and let the doors shut they will not reopen with a hall call. or if you stay in the elev. will not open with a RDO button. voltage checks and the "reactor" circuit shows a standing voltage of 35 volts, in the normal state when the elev. arrives and the doors open the voltage go up to 76 voltsandthen drops back to the standing voltage. when the doors fail the voltage drops to almost zero and them back up to 35 volts we have been over the controller and the door oper. but sometimes the issue just goes away for a few days. seams like a short somewhere but why only when the elev. is at the floor or when you break the beam/ reopen? i know i am over looking something but?????

hi bill, does the lift open all floors at the rear or just 1 floor. if multiple floors does the doors open of is it all floors. this is important as if multiple floors then something common is at fault however if only 1 floor it can be both.

normal reopen when at the floor, via call buttons, means you should get a reopen via the selector lz brush and contact.
you would also look at the dz contacts but if the front door has no problem then all this should be ok.(check for differences between front and rear actuation ie lzrear etc.)

as for the opening then stopping where are you measuring the 35v? at the motor?where is the lamda relay(assuming sgr)contact situated for the open relay?is there a rear open door relay? are the contact flexs ok?let us know mate how you go.

Bill
Sorry if this feels like a foolish question! Is your door open relay pulling in when you trigger the photo eye, safety edge do DOB? I have several versions of the UCL. Is there an RO relay and is it pulling in? Do you have voltage from hl1 to c18 or hl1 to c19?,

issue is at all rear landings,both front and rear share the same DZ brushes and i see no RDZ OR RLZ. there is rear door open relays(R1DO AND R2DO) both come in when you break the beam or hit the hall button or the DO button inside the car. i don't have the prints with me but i do not belive there is a RO relay. as far as c18 and c19 they sound like points i have been on but i do not have the prints with me. someone before me has been in this area but i have no info. coils on R1DO and R2DO have been changed, RDOL realy has been completly replaced and coils on RNT and RNP(door protction) has been changed, also all the caps. and resistor on the RNP relay(for timing) have been changed and someone added more caps. to the circuit i belive to try to get more time.? i will try to get back to the job monday and get a copy of the prints to bring home. but my friday is going to be comsumed by the great DOVER composit.

going by your latest report, double up your trailers going down to the car with a spare with a bridge. it sounds like a trailer problem particularly if its intermittant.

i was hoping not to get into the cords this elev. has 6 for some reason. do you know what is different between a hall call when the car is not at the landing and when it is at the landing? that was the last thing we where working on was to figure out if we could find what the differance is.

what selector is there or no selector at all? plus it really depends on the door open cct.

is it any particular direction? i wonder if you hall calls are cancelling(UHR,DHR)? i dont think its this but check it.if its all directions and the rear 1do,2do are coming in it really sounds like the do cct. the difference between when the lift is there or not is that 1 part of the cct that calls the lift and the other is that it doesnt need to do so the same common door open cct exists for both situations.

i think the system works sort of like this.

for a 10 ucl.


up hall on 2 is set.
2u sets.
hst relay pulls in thru uhr & uhc and 2u 3,4.
hst 11,12 pull in nt.
i think dz 1 & 2 make at this time.
nt 11,12 pulls in ntx.
nt 3,4 pulls in d1r,d2r.
d2r 3,4 & 11,12 energise dma and doors should open.

this sequence can be for your lift.also this is why i sadi to bridge a spare trailer(if you have 1) as you dont have to run a new 1 and/ or change it, you just bridge 2 together as its easier.

any update?

sorry have not been back to the job, but they have not called with any issues????? gone for now i guess?

well have not had any callback on this elevator so???? checked it out again monday and all is well. hate when it just goes away, but it will be back i am sure......thanks everyone for the input i might not use it this time but i try to store everythig in this little brain. on another note for you guy that will read this how is it going you in the feild as far a maintance? we have no service team at all. the service team that we did have has been told they can not put any hours in the maintance side. so we have been running and there is no sign of a break or any help? just was wondering how thin everything was being stretched????

Sometimes just messing with the rheostats on the door operator box,just moving them back and forth,will solve problems.
Also,is it B2 resister in there also? Sometimes causes problems
Sorry,been awhile.

in aus i work for a small company and still have dedicated service personnel which is fine.we do about 90 units on a round and generally do bimonthly service. having worked for major companies it is getting to the point(150+) were you turn up check the lift is running,do minor adjustments then walk out. you just dont get enough time if you want to get to all in the month considering calls,9 day fortnight(ie 2 days off per month), sick days and helping other blokes etc.

That 6970 operator is still nice operator had the 2 versions one type had the Rehostats which allowed good clean control of the operator and the other had the Reynolds and Reynolds Relay control Board..which didn,t hold up like the original..just a great simple Bullet-prof operator..