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#28075 - 10/30/19 01:46 PM DMC1 doors open / close every 20sec  
Joined: Oct 2019
Posts: 16
Truegrit2 Offline
stranger
Truegrit2  Offline
stranger

Joined: Oct 2019
Posts: 16
I’ve got a DMC1 with doors cycling normal speed every 20, or so, sec with no demand..

Car runs perfectly when demand placed, no delay, close limit is made at closed position


Any tips?
Thank you

#28076 - 10/30/19 01:51 PM Re: DMC1 doors open / close every 20sec [Re: Truegrit2]  
Joined: Dec 2015
Posts: 1,528
Indirtwetrust Offline
ElevatorPractitioner
Indirtwetrust  Offline
ElevatorPractitioner

Joined: Dec 2015
Posts: 1,528
Local 18
Door locks, gate?

#28079 - 10/30/19 07:00 PM Re: DMC1 doors open / close every 20sec [Re: Truegrit2]  
Joined: May 2019
Posts: 37
Elevator_Logic Offline
Elevator_Logic
Elevator_Logic  Offline
Elevator_Logic

Joined: May 2019
Posts: 37
USA
DMC doors cycle if it thinks a hoistway door is open at a floor it isn't at. I would clean all HW door interlocks and see if the problem goes away. Also it could have a bad curtain/Safe Edge.

#28082 - 10/30/19 08:49 PM Re: DMC1 doors open / close every 20sec [Re: Truegrit2]  
Joined: Mar 2016
Posts: 191
lowoil Offline
Elevator guy
lowoil  Offline
Elevator guy

Joined: Mar 2016
Posts: 191
Wisconsin
Check door position count and faults if you have dmc fast.

#28084 - 10/30/19 09:32 PM Re: DMC1 doors open / close every 20sec [Re: Truegrit2]  
Joined: Dec 2010
Posts: 566
elmcannic Offline
addict
elmcannic  Offline
addict

Joined: Dec 2010
Posts: 566
S. Central Utah
1) Built up junk on door tracks at locked position.
2) Linkage from operator to car door needs looked at for loose bolts on driving arms.
3) Shorting SE or PHE cable
4) Broken limit collar...or maladjusted limits.
5) Door belt deformed on the motor sheave at full closed position.
6) Door belt walking off of big sheave near closed position.

All common stuff, but #1 is common on Dover.

Hope you have a FAST tool if it’s not a mechanical issue.

#28087 - 10/31/19 12:26 AM Re: DMC1 doors open / close every 20sec [Re: Truegrit2]  
Joined: Mar 2011
Posts: 149
xxXBlazeXxx Offline
member
xxXBlazeXxx  Offline
member

Joined: Mar 2011
Posts: 149
Ga.
If its not any of the mentioned above which it could be then relearn and SAVE the door position.

#28097 - 11/01/19 09:45 PM Re: DMC1 doors open / close every 20sec [Re: Truegrit2]  
Joined: Oct 2012
Posts: 262
Philly Offline
enthusiast
Philly  Offline
enthusiast

Joined: Oct 2012
Posts: 262
Look at io"s in fast


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