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New tube intallation - Laserscript

New tube intallation

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CamG
Posts: 34
Joined: Mon Mar 18, 2013 6:57 pm
Contact:

New tube intallation

Postby CamG » Tue Apr 18, 2017 2:47 pm

So, it appears after 4 productive years I finally need a new tube.
I was going to pop over to HPC and pick one up to install myself, but was wondering if anyone could give me any advice on fitting? Physically it looks fairly simple (clamp in place, reattach power and align) but I was wondering if there are any non obvious steps that might not be apparent? (for example the power connectors appear to be held in with sealant on my current tube, is this needed and if so what sort?)
Also, do new tubes come with all required tubing for cooling? I presume the end parts are pre installed but are the bits to and from the pump included? Thanks in advance

Daven
Posts: 1339
Joined: Fri Oct 15, 2010 6:44 pm
Location: Devon
Contact:

Re: New tube intallation

Postby Daven » Tue Apr 18, 2017 4:06 pm

Hi Cam,

The last tubes I had from HPC had the cables attached but not the water tubes.
This is what I do:-

Turn the machine off (let it power down for a while just to make sure). Cut the red cable off the old tube about a foot back from the connector, do the same for the black wire.

Undo the clamps holding the tube.

Drain the water and clamp the hose near the tube, Turn the tube so the outlet is on the top and either pull the hose off the tube or cut it back (I tend to cut it as it will be a bit stretched anyway).

There will still be water in the tube so plug the outlet end of the tube and remove from the machine.

Put the new tube in place but don't tighten clamps yet. I found it is easiest to join the cable about a foot back from the connectors. I cut the cable to length, put some heat shrink on the cables and some silicon hose (this will be used after joining so push it down the cable out of the way).

Strip the cable back carefully and twist it together and solder the join, slip the heat shrink over the join and shrink, wrap with insulation tape for extra help and them slide the silicon tube back over the join. Depending in the power supply you may find it easier to trance the black wire back and replace completely.

Replace the hoses (I like to put a small cable tie on to hold in place). Remove the hose clamps and slowly fill with water if possible. Turn the tube so any air on the inlet end can escape (twist carefully so you don't put any strain on the connectors). Twist the tube back so the outlet is at the top (so any air can get out). This is the best position for the tube.

Move the tube so it is around 25mm from the first mirror and tighten the clamps - do not over tighten, the tube does not need to be unmovable just held in place.

Make sure there are no bubble especially by the output coupler - the latest tube seem better but some still get a bubble in the part where it narrows around the metal filament.

Make sure the water is running freely and carry out a test - if you are really lucky it will not need any adjustment, my last tube just needed a slight tweek!

That's about it - I don't think I have missed anything but just in case do not blame me if it goes wrong!!

Best
Dave
Using two LS3060's and an ex 3020 user

CamG
Posts: 34
Joined: Mon Mar 18, 2013 6:57 pm
Contact:

Re: New tube intallation

Postby CamG » Wed Apr 19, 2017 4:20 pm

Thanks for the reply Dave, possibly a silly question, but are the water tubes just held in place on the tube via their own tightness? Looking at my current one it's difficult to tell if there's any adhesive involved or not.

Daven
Posts: 1339
Joined: Fri Oct 15, 2010 6:44 pm
Location: Devon
Contact:

Re: New tube intallation

Postby Daven » Wed Apr 19, 2017 4:41 pm

Yes they grip quite well but over time can stick so you may need to cut them off. The hose is silicon so is like a rubber hose.

Best
Dave
Using two LS3060's and an ex 3020 user

Dynamode
Posts: 18
Joined: Wed Jan 22, 2014 8:04 am
Contact:

Re: New tube intallation

Postby Dynamode » Mon Apr 24, 2017 9:14 am

Hello Cam,

If I can pass on some friendly advice, let HPC do it for you, if you get it wrong its a very expensive mistake. It's worth every penny letting them do it. They can sort it in less time, set it up and have you up and running in no time. It's going to cost you more, but if you ask me, money well spent.

Dynamode


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