swimming at work.

[johnboy6083]

Public water company, and I'm sure they're grundfos. I've installed lowara in the past! Well I've learnt something here fellas, and I won't be making the same mistake again. Glad I had mech foremen with me when I did it! lol

 

[Engineer54]

Public water company, and I'm sure they're grundfos. I've installed lowara in the past! Well I've learnt something here fellas, and I won't be making the same mistake again. Glad I had mech foremen with me when I did it! lol

Making mistakes is all part of the learning curve unfortunately. Learning from those mistakes is part of gaining experience!! We've all made mistakes, big and small ones, but the bigger the mistake, the less chance you'll ever make that same mistake twice!! ...lol!!

 

[generalbosh]

The first time I installed a verticle multistage I spent ages setting shaft heights, checking direction of rotation, priming (no flooded suction) etc etc etc & when i was ready to properly commission the pumpset everything fired up ok but no pressure or flow would register.

Many minutes of scratching stubble later i dropped the flange connections off to find I had left the plastic transit caps in position that site flush into the suction/dischrage ports ... Steep learning curve.

 

[Knobhead]

We’ve all done daft things. Thanks for making me laugh :angelsad2:

 

[johnboy6083]

at least you didnt knacker a few grands worth of pump.

 

[Knobhead]

I think over the years I could add a couple of zeros on to the end. :wacko: Things happen, the trouble with industry it tends to have the zeros added to the figures.

 

[johnboy6083]

Lol. Thing is, everybody makes mistakes, but like you say, in industry this costs a lot in capital expenditure to replace broken gear, labour to fit it, and lost production.

 

[Knobhead]

From the sound of it, it wasn’t your fault. Don’t worry about it.

 

[johnboy6083]

I'm not! Lol. A backup plan was hatched, where we were to install the old borehole pumps (laid horizontally, in a pipe) back, until the replacement pump is repaired. Thing is, somebody pulled the pumps out of the pipe, and removed the motors! Couldn't make this job up!

 

[Knobhead]

On a similar vain, spare “torpedo” deep well pump returned from repair, who ever packed it had cut the cable off to make his job easy. So back comes the motor and I’m looking at the box wondering how they’d wrapped the cable up. Opened the box and found the cut end! Had to put a somewhat modified resin joint in it. Spare put back in stores, job done. A couple of years down the line the pump had to be changed. Goes to get it and low and behold the cables missing, chopped off again! I’m nearly in tears, yet another joint to be done! I found the person that chopped it the second time, I was ready to kill him.
I was chuffed that my joint held up under 100’ of water

 

[johnboy6083]

in my opinion, the only electrical thing that i would truly trust to last in water is a resin joint. That plant room that flooded, everythiong in it was supposedly ip68. it wasnt. i find that to waterproof JB's and othet boxes, you need to seal the screws with polyeurathene sealant, unless the box is designed to be screwed down outside the rubber seal, and you need to put vaseline on the rubber seal. Everything in this plant room required drying out, and the pressure transducers are shot.

 

[Engineer54]

More often than not, these IP68 enclosures do what they say on the box, It's the installation methods that fail these enclosures. ...can't tell you how many times on inspection i've found supplied fixing screw sealing caps absent, lids and doors not securely fastened, cable/conduit entries without sealing rings fitted, the list goes on and on. ..lol!!!

All these bits of kit have been type tested, many times by the various testing institutions, and wold not get the IP68 rating if they ever failed in these tests.
Having said that, It's always a good idea to apply a smear of vaseline or similar, to any exposed rubber type gasketing, whenever it has been disturbed by lid or door opening.