Another Wasco TD 30/30 Problem

[buddy]

Last night at 9:00 pm I went to my MAT and saw that the other new Wasco TD 30/30 had no power on top or bottom pocket. My first instinct was that circuit breaker tripped since both top and bottom pocket feed from same circuit breaker. I was wrong, I reset the breaker couple times but no power on either pockets.

Thankfully Tony was on-line on this board and I sent him a PM. He asked me to open up the back panel of the dryer and check the wires.

Sure enough the wires were shorted, burnt and fused. One of the terminals on the terminal block was totally burnt including the connectors from all three wires on that terminal block. I re-splced the wires and connected them together with twist-on screw connector to fix the problem.

Now both pockets are back on-line. I will have to re-order the entire wire terminal block from Wascomat.

I really have had bad luck with these new Wasco Dryers lately.

[TTLES]

Buddy, I tried to e-mail you...Any way..... This could have been caused by a loose connection causing a high resistance or the dryer may be drawing too many amps. A currant/amperage test or check would be appropriate. It is possible that one of the four motors is drawing too many amps. Was the beeaker tripped when you noted the problem? Wire size should be at least 12 guage to the dryer. Tony

[mike]

My repair guy told me when he installed my td-3030's that one didn't work because it was wired incorrectly at the factory.

I didn't believe him at the time, (he'd never seen one before)

He said he compared it to the other dryers, and fixed it.

After reading these posts, I'm thinking he may have been right.

[buddy]

This was working fine for last four months until the wires got burnt up.

[KT40]

I have heard of an instance where a TD 3030 was wired incorrectly, but it was at the process module. Buddy, I believe you problem was as Tony said......loose connection.

One quick thought. Is your circuit breaker protecting both pockets??? If so, you will have to have a pigtail inside the control panel, and if that became loose it will give you this problem. If your electrician "jumpered" the 2 pockets together via the terminal block, it can cause this type of problem.

Kevin

[buddy]

Kevin,

Wasco Dealer installed these dryers and yes he jumped top and bottom dryers at the terminal block. Can you elaborate on pigtailing at Control Panel?. Can I do it and do you have any instructions on how to do it?

Thanks,

[KT40]

OK.....you have L1 L2 N1 and N2 at the terminal block at the back of the dryer.

Disconnect power first.

There should be a black and a white wire coming into the dryer from your electrical service. Disconnect these wires. Remove the jumper wires on the terminal block. These should have been jumping L1 and L2 together, and N1 and N2 together.

Connect a short (6") black wire of the same gauge to L1 and L2.

Connect the 2 together WITH the black wire coming into your dryer from the electrical panel. Use a wire nut to secure them together.

Connect a short (6") white wire of the same gauge to N1 and N2.

Connect the 2 together WITH the white wire coming into your dryer from the electrical panel. Use a wire nut to secure them together.

Check all connections. Turn on the power and test the dryer.

This should help from having the wiring loosen up. The terminal blocks in the 3030 are not made for multiple wires.

Call me if you don't understand this.

Kevin

[CharlieS]

The easy question is in this form - Do any of the terminals have more than one wire coming out of them?


When Kevin says Pigtails, he is asking if the hot (black) lead coming into the dryer is split into two 6 to 10 inch "pigtails", with each pigtail feeding one dryer. The same for the neutral (white) lead. Only one wire goes to each terminal.

The alternative is that the lead feeds into one of the dryer L1 terminals, and then a jumper wire goes from that terminal over to the other L2 terminal. If this is the case, 2 wires are being connected together at the terminal block, and the block is not designed to do this. As a result, the wires may become loose, and create a bad connection.

Charlie

[buddy]

In other words:

[KT40]

You got the idea.

Call me if you need help.

Kevin