Who's Online Now
0 registered members (), 4 guests, and 0 spiders.
Key: Admin, Global Mod, Mod
March
S M T W T F S
1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
31
Newest Members
Prairieelevator, Robot Rob, Montkone, Jevans, Clayshooter
8395 Registered Users
Forum Statistics
Forums13
Topics6,468
Posts36,643
Members8,395
Most Online117
Jan 16th, 2020
Previous Thread
Next Thread
Print Thread
#23037 - 02/12/18 10:29 PM DMC up fast coil  
Joined: Dec 2009
Posts: 534
solidstate Offline
addict
solidstate  Offline
addict

Joined: Dec 2009
Posts: 534
Got one that happens intermittently. It has done it a couple of times while we are there and then start back to working when performing checks. It will go on low oil, and the complaint is and has been witnessed by us ..pump comes on but does not go up. The few times we did get to trouble shoot by checking voltage at UFS1 and UFS2 we dont have any and then as if by magic we get it and it starts working until the next day. Checked switch tree and switches, wiring, had a spare relay board and put that on, but still persist.

Welcome any suggestions.

#23040 - 02/13/18 12:02 AM Re: DMC up fast coil [Re: solidstate]  
Joined: Aug 2015
Posts: 45
JHessorz Offline
Hazanko
JHessorz  Offline
Hazanko

Joined: Aug 2015
Posts: 45
NJ
I had a similar problem a month or so ago on a DMC, ending up being a broken shunt on a hatch switch. Sounds like you checked the tree already though. You have UP1, DN2 as well as FST to go through before your coil energizes. Did you check those? I would also consider rebuilding the valve, assuming it's an I2, new seals can make all the difference sometimes.

#23043 - 02/13/18 12:39 AM Re: DMC up fast coil [Re: solidstate]  
Joined: Dec 2010
Posts: 566
elmcannic Offline
addict
elmcannic  Offline
addict

Joined: Dec 2010
Posts: 566
S. Central Utah
Typical TSL limit switch description. The break in the wire may even be in the unistrut OR just bad contacts on the limit switch itself. Be sure to check the auxiliary contact on the starter.

#23265 - 03/01/18 12:40 AM Re: DMC up fast coil [Re: solidstate]  
Joined: Feb 2014
Posts: 23
Elevatorguy619 Offline
stranger
Elevatorguy619  Offline
stranger

Joined: Feb 2014
Posts: 23
I am in the same boat on a DMC as well I replaced the relay board and same thing. I am showing continuity on TSL3 and TSL4 I can see any breaks in the wire. Any ideas?

#23268 - 03/01/18 02:42 AM Re: DMC up fast coil [Re: solidstate]  
Joined: Dec 2010
Posts: 566
elmcannic Offline
addict
elmcannic  Offline
addict

Joined: Dec 2010
Posts: 566
S. Central Utah
Check the up level adjuster that it’s not clogged.

#23270 - 03/01/18 03:04 AM Re: DMC up fast coil [Re: solidstate]  
Joined: Dec 2015
Posts: 1,527
Indirtwetrust Offline
ElevatorPractitioner
Indirtwetrust  Offline
ElevatorPractitioner

Joined: Dec 2015
Posts: 1,527
Local 18
Did you replace all the relays with the relay board? Check where the wires go into the valve coils (fast and slow). They get brittle and can become intermittent. Make sure the up level strainer is clean. If the problem is intermittent, reading continuity means nothing. Pull the switch tree, clean the contacts, inspect the wires thoroughly. Breaks inside the wires are common. Cut, strip and re-terminate the wires in the screw terminals. I just recently had a bad connection there, the bare wire was under the terminal, it was tight, wouldn’t pull out but was just not conducting. I’ve also seen the MTA plugs from the switch tree to selector cause MLTs. Motor thermal and overtemp switches. You have to be thorough or these can get out of hand. Any info you can get from customer or other mechanics will help a lot. Was the motor running, does the car move, if so where does it stop, etc.

#23272 - 03/01/18 11:05 AM Re: DMC up fast coil [Re: solidstate]  
Joined: Dec 2009
Posts: 534
solidstate Offline
addict
solidstate  Offline
addict

Joined: Dec 2009
Posts: 534
Sad to say...We never found a definite problem with this one. Our motor would run, high speed valve would not come on. We were not getting voltage between TSL3 and UTS1. We checked voltage at AC2 and TSL3 and still no voltage. That eliminated the one switch between AC2 and TSl3. While checking for voltage at the terminals, we would start getting voltage and the thing would run the whole time we were there. All though there were no relays on the board that controlled the high speed coil, we replaced the board and the relays(this is the way it comes from TK). Thought maybe a bad trace. Thing ran fine fro a day or two and then problem came back. So start checking for voltage at the switches and if it you held your mouth just right or stepped on the car just right, it would start working and not show again while we were there.The thing being intermittent was just frustrating. We pulled switch tree off and nothing out of the ordinary.Checked our connections at the selector and again nothing we could point our fingers at. The car is running fine now. Of course we all know it will come back.

I was thinking of replacing the selector board next as this looks like the actual output to the valve between CS5-7 and CS6-15. Can anyone confirm that?

#23277 - 03/01/18 05:23 PM Re: DMC up fast coil [Re: Indirtwetrust]  
Joined: Feb 2014
Posts: 23
Elevatorguy619 Offline
stranger
Elevatorguy619  Offline
stranger

Joined: Feb 2014
Posts: 23
The motor starts and it will just basically sit there and bypass until it goes on low oil. I checked the switches I am getting voltage proper voltage to my switches across TSL3 and AC2 I checked for continuity and exercised the switch and had perfect tone. So I'm pretty sure it's not the switch or wires I do know of their fondness of breaking. I replaced FST UP1 and DN2 relays but I'm still not getting voltage on my valve coil so I am not sure pulling the valve apart will solve anything.

#23279 - 03/01/18 07:56 PM Re: DMC up fast coil [Re: solidstate]  
Joined: Feb 2013
Posts: 757
john jay Offline
old hand
john jay  Offline
old hand

Joined: Feb 2013
Posts: 757
ohio
When you get back to the job, a couple of things to try. AC2 is the ground side of the circuit. Did you try going to a known ground instead of AC2 with your meter, if you still don't have a voltage you have eliminated that side of the line and can concentrate on the hot side.When you say you are getting a proper voltage across TSL3 and AC2, you should not read a voltage there unless you are reading from the AC1 side of the circuit to them. If you are reading a voltage across TSL3 and AC2 that is showing an open circuit there.

Last edited by john jay; 03/01/18 08:04 PM. Reason: bad number
#23280 - 03/01/18 11:04 PM Re: DMC up fast coil [Re: john jay]  
Joined: Feb 2014
Posts: 23
Elevatorguy619 Offline
stranger
Elevatorguy619  Offline
stranger

Joined: Feb 2014
Posts: 23
You are correct by proper voltages there is none showing on TLS3 to AC2. The switch is good when i i check from TLS3 to UTS1 I get 106VDC then motor starts and voltage drops off.

#23289 - 03/02/18 03:18 PM Re: DMC up fast coil [Re: solidstate]  
Joined: Feb 2013
Posts: 757
john jay Offline
old hand
john jay  Offline
old hand

Joined: Feb 2013
Posts: 757
ohio
You should not be reading DCV here. I believe this is an ACV circuit. You should be reading around 120VAC. If it is AC you may want to tap up the Transformer to a higher voltage if possible.

#23291 - 03/03/18 12:48 AM Re: DMC up fast coil [Re: solidstate]  
Joined: Dec 2015
Posts: 1,527
Indirtwetrust Offline
ElevatorPractitioner
Indirtwetrust  Offline
ElevatorPractitioner

Joined: Dec 2015
Posts: 1,527
Local 18
I’m sorry, I assumed you were having intermittent MLT problems. Are you saying the car won’t run up at all? Do you have a set of prints? With the meter on AC, before trying to run, read from AC1 to AC2, you’ll read 120 vac, now read from AC1 to TSL3. If you still have 120 vac you have verified the TSL3/TSL4 Contact is good (you will also have TSL input high.) now clip one lead on TSL3 and give the car an up call. You should read 120 vac at MS1 since the pump is running. Now read MS2, if you lose voltage here check the aux contact on Delta. Now read voltage at UTS1, if you lose voltage here, it could be FST, DN2, or UP1 Relay contacts. If you do have UTS1, UTS input will be high, now check voltage at TSL2, if you lose voltage here, the problem is in the switch tree, UTS or TSL switch or wiring. If you do have 120 vac from TSL2 to TSL3 then you should have 120 vac from UFS1 to UFS2 and the up fast coil should be picked. If your problem is in the switch tree, pull the CS6 MTA plug from the selector and clip your leads from pin 11 to 15, put the meter on audible continuity, pull the tree up on the car and open up the UTS and TSL switches.

#23377 - 03/09/18 05:07 PM Re: DMC up fast coil [Re: Indirtwetrust]  
Joined: Feb 2014
Posts: 23
Elevatorguy619 Offline
stranger
Elevatorguy619  Offline
stranger

Joined: Feb 2014
Posts: 23
So I did what you said and I all the way back to pin 11 and 15 and no continuity. 11 is going to one side of TSL and 15 is going to UTS but it look like at some time in the past someone modified something.


Photo Gallery
PECCO PH5000 Overspeed Governor
Drive sheave
The best helper.
Rotary Oildraulic
Old Otis badge.
Brakes,Coil,Rotor
KONE MX10 repair tool kit
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.046s Queries: 15 (0.019s) Memory: 2.7443 MB (Peak: 2.9694 MB) Zlib disabled. Server Time: 2024-03-28 13:26:46 UTC