HAVS Syndrome

Jon

New Member
Harold,

I feel no vibration at all since I started using the ball valve set up.
(so does that mean I am not only deaf but have no feelings also?)

Mike, you're getting <marquee>[color=royal blue]BAAAAAAAADDDDDD[getout]</marquee>[/color]
 

Harold Brantley

New Member
Thanks for your responses. I must admit I'm a little confused.

Mike, if you have a lot of vibration at the end of your hose, I don't understand why you don't get a numb feeling in your fingers and hands after hours of washing. Do you have any ideas? Belt or direct drive?

Jon, I don't understand why the ball valve would increase or decrease the vibration at the end of your hose. How long is your hose and what is your psi & gpm? I assume your pump has three pistons. Are you belt or direct drive? The unit I am getting the vibration from was direct drive therefore higher rpm.
 

Douglas Hicks

New Member
numb hands

I am getting arthritis in my r thumb, a sympton of my advanced age. I find a warm glove on that hand helps. Even better, my girlfriend is a Liscenced Massage Thearpist, who works on my hand.

Douglas Hicks
General Fire Equipment Co of Eastern Oregon, Inc
 

Dave Olson

New Member
Hello Harold,

The reason that we use ball valves is so we do not need to hold a trigger gun open.

I was just with my crew this morning and felt the hoses. Very little vibration. They were using rotating tips so they were probably getting more vibration from them than the pump.

Our pump is belt drive, and no hard pipe to or from the fluid end. Our hoses are 150-225 feet long but the water must go through the boiler coil (400 feet or so) before it gets to the hoses.

Dave Olson
 

Jon

New Member
Harold,

3000 PSI, 5gpm hot water system with cat pump. I run 100 feet of hose and add as needed, most I ever ran was 300 and that was just this week, still we get no vibration.

I cannot say if the ball valve has anything to do with decreasing vibration but it sure does cut down the problem of holding open a trigger for hours at a time.
 

Harold Brantley

New Member
Dave & Jon, thanks for your responses. Sounds like the main difference is both of your systems are hot water and therefore have boiler coils. This long coil may be absorbing the pump vibration. I use cold water units on residential and commercial buildings. How about some others that are using cold water units. How is your vibration at the end of the hose?

Kendra, I haven't heard from you. Is the unit you are getting the vibration from cold or hot water? Direct or belt drive? Hose length? I believe you do mostly surface cleaning so are you getting the numbness while using a surface cleaner?
 

Schmutz Man

New Member
Hi Harold,

Just a thought! I'm no mechanic, but, hose vibration is usually an indication that air is getting into your pump from the low pressure side. Check all the connections up to the pump and look at the check valves on the low pressure side. There could also be something blocking the flow of water from your feeder tank. Check the line filter. The hose vibration is caused by cavitation and is a chore to track down sometimes - but usually is a simple air leak causing the pump to gag !

Good luck,

John
 

Mike Hughes

New Member
Originally posted by Harold Brantley
Mike, if you have a lot of vibration at the end of your hose, I don't understand why you don't get a numb feeling in your fingers and hands after hours of washing. Do you have any ideas? Belt or direct drive?

.

Harold,

Both of my machines are Del_co RK-24's. 3000psi, 5.5GPM with 200' of hose on each. The vibration is not that bad.......I was exxagerating a bit. The main reason why it doesnt bother me is because I only wash maybe 30% of the time, if that. Have employees that are doing most of the washing. They have not complained about what you are talking about though.

Mike
 

Harold Brantley

New Member
John, thanks for the air leak suggestion. I'm familiar with the sensation you get when you first start spraying with air & water in your water hose. For me the air seems to soften the vibration and reduces the pressure and output volume. I do regularly check the input filter for trash that would restrict water volume. The vibration I'm talking about is caused by the three pistons (triplex pump) operating at 120 degrees out of phase. A duplex pump with two pistons is even worse. The pulsation dampener evens out the three spikes which causes the vibration. If the dampener is sized properly, has the right precharge and is mounted in the right location, the vibration can almost be eliminated.

Mike, I'm not familiar with your two machines, are they cold or hot water?
 
P

pldoolittle

Guest
This is a pretty old thread, but I found it after my hands started getting numb. So I'll chime in with some add'l info. Perhaps my info will help you, or perhaps some of you have info that will help me.

Background: I have been washing full time (5hrs/day on the pump) for about 6 weeks now. The numbness started about two weeks ago, and is now present 24x7. The degree of numbness varies from mild (as I type my fingertips are numb), to severe (my whole hand feels as if it is asleep (pins and needles).

My pump is a 35-3800/4 gallon (T1511) Northern cold water belt drive unit. I typically use 150 feet of hose and a northern gun. I do feel a low level (noticable when you pay attention) constant vibration when washing. When I have the pump open and no gun on the line the output stream pulses visibly at a regular interval. A guess would put the pulse intervals at 1/3 seconds.

I am a hobbyist woodworker and have never experienced this type of numbness in that pursuit. I have, however experienced this type of numbness (temporary = < 24 hours) after extended weed eating or chainsaw use.

Philip
 

john orr

New Member
Phil,

Sorry to hear about your hands. Mine started a few years ago and at first, I thought I would have to find another line of work.

The first thing you need to do is get yourself an easy-pull gun - the one with the red trigger at Northern Tool. Then go see a hand doctor. There are things, short of surgery, that can be done.

John
 

robert@nhpc

New Member
Hi guys
I washed a industrial shed about 2 months ago with my telescopic wand and now my elbow is hurting, but Im hoping it will go away.
What I want to know if any body has tryed one of those tennis elbow arm bands that goes on your forearm and if it worked.
 

Ddechi

New Member
Hey realise this thread is very old but hoping I can still get feedback.

I have a maintenance business and while we do power washing, it's not an everyday requirement.

Anyway i took two jobs this week, one was a greenhouse and the other around an administrative building, over the last two days completing the jobs my employee did not come and I did 11 hours on Wednesday 11th and Thursday 12th I did 14hrs.

My hands are now suffering from mild numbness and pain a little when I squeeze, my grip also seems a little weaker and it hurts a little to force it.

Guess my question is:

Considering I do not do this everyday and there is no continued "trauma", can I expect this to go away on its own?

Oh yeah I'm running:

Pressure Pro Professional
4000psi (though i saw 4500 on the unloader)
Cold water
Honda engine
GP pump
Triplex
150 feet 3/8 hose


Hope I get some feedback this feeling is pretty unpleasant.
 

Doug Rucker

PWN ADMIN TEAM -
Staff member
Hey realise this thread is very old but hoping I can still get feedback.

I have a maintenance business and while we do power washing, it's not an everyday requirement.

Anyway i took two jobs this week, one was a greenhouse and the other around an administrative building, over the last two days completing the jobs my employee did not come and I did 11 hours on Wednesday 11th and Thursday 12th I did 14hrs.

My hands are now suffering from mild numbness and pain a little when I squeeze, my grip also seems a little weaker and it hurts a little to force it.

Guess my question is:

Considering I do not do this everyday and there is no continued "trauma", can I expect this to go away on its own?

Oh yeah I'm running:

Pressure Pro Professional
4000psi (though i saw 4500 on the unloader)
Cold water
Honda engine
GP pump
Triplex
150 feet 3/8 hose


Hope I get some feedback this feeling is pretty unpleasant.
Yes you should get used to it....and it should go away assuming you did not cause some sort of injury and its just soreness. You should get a trigger gun that much easer to keep in the hold position and it will bless tiresome on you. Here is link to the one I use and we also sell..https://www.dougruckerstore.com/products/suttner-orange-spray-gun-rs6955-st-2305/

It's an easy pull trigger and it will definitely help....
 

Ddechi

New Member
Yes you should get used to it....and it should go away assuming you did not cause some sort of injury and its just soreness. You should get a trigger gun that much easer to keep in the hold position and it will bless tiresome on you. Here is link to the one I use and we also sell..https://www.dougruckerstore.com/products/suttner-orange-spray-gun-rs6955-st-2305/

It's an easy pull trigger and it will definitely help....

Thanks for the link I'll definitely consider it.....my hands arent back 100% yet but they're much better than they were the day I posted.
 

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