Discussion:
Brand new Jungheinrish ECR327A electric pallet jack weird problem

This is the 6,000 lb capacity one. The problem is there is no variable traction between what I might call "creep speed" and "middle speed". In other words, you start out turning the "throttle" hand grips and pallet jack creeps forward but as you increase turning the grips nothing happens until you turn perhaps fifteen degrees and then suddening it jumps up to what I would guess is about mid range speed.

From mid range to fast it works fine with smooth transistion....but slow to middle there is no slow transition....slow to medium with nothing in between.

Curiously it works fine in reverse...forward is the only problem.

Being new, it's under warranty, so techs come with laptop and change parameters and it only get's worse if anything. So they put it back to original defaullt, leave and vow to come back when they know more about why it is happening.

My needs are a bit more particular than most and suspect the average warehouse operator might not even care if it was like it is. I have an older Jungheinrich (2006) same model also with AC drives that doesn't act this way however...it is smooth as silk transition traction.

So, any idea what the heck is wrong with this one ? Or is it "just the way they are" on the newer models ?
  • Posted 18 Sep 2013 04:51
  • Modified 18 Sep 2013 04:57 by poster
  • By Milacron
  • joined 25 Nov'06 - 80 messages
  • South Carolina, United States
Showing items 1 - 5 of 5 results.
"I know that on the newer trucks most of the electronics expect a certain amperage for them to work correctly. I have seen them where to low or to high of amperage will cause damage to electrical components"

Yeah, I thought about that too (which, amazingly, the GP techs didn't think about...they were fixated on the weight issue) and figured that would be the only reason the smaller batteries might be affecting the traction speed transistion. But now the pallet jack has a proper 600 AH Deka battery, fully charged, and that didn't help at all.

OTOH, what I thought about was the smaller battery bank affecting performance, whereas you mention actual "damage" I can sort of see that in a long term situation where the components are "stressed" for months but find actual damage hard to believe on something that acted the way it acted immediately, when the jack had one minute of use.
  • Posted 20 Sep 2013 21:07
  • Modified 20 Sep 2013 21:23 by poster
  • By Milacron
  • joined 25 Nov'06 - 80 messages
  • South Carolina, United States
yes I see that now.....
still doesn't mean the problem can't be solved using the PC program, maybe those GP techs just were not that proficient with the program and just gave the excuse to go get more information because they just didn't know and wanted to get in touch with tech support about it.
  • Posted 20 Sep 2013 03:10
  • Modified 20 Sep 2013 21:34 by poster
  • By swoop223
  • joined 23 Mar'12 - 3,691 messages
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com
I know that on the newer trucks most of the electronics expect a certain amperage for them to work correctly. I have seen them where to low or to high of amperage will cause damage to electrical components.
  • Posted 20 Sep 2013 02:33
  • By Partsguy5
  • joined 13 Jun'12 - 409 messages
  • California, United States
swoop, if you will read more carefully you will see the pc approach has already been done by G. Poole techs with no good results.

At the time I had only temporary batteries (two Marine deep cycle size 27) in place, and they were thinking it needed more weight to act properly. I demoed that by picking up a machine that weighed over 3,000 lbs the problem was still there, but that didn't convince them. So now I have a 1600 lb Deka battery in position and if anything, it is now worse !

(my theory on why it seems worse with the battery= creeps slighly slower with added weight and when mid speed finally hits the natural reaction is to throttle back, but it drifts a tiny bit more due to inerta from the battery weight...thus it is even more annoying now !)
  • Posted 20 Sep 2013 01:33
  • By Milacron
  • joined 25 Nov'06 - 80 messages
  • South Carolina, United States
Sounds to me like the tiller/throttle control needs to be learned or the threshold needs to be set.
Of course it could have a bad control also

You'll probably need to hook up the pc and see what's going on with it
  • Posted 19 Sep 2013 01:01
  • By swoop223
  • joined 23 Mar'12 - 3,691 messages
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com

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