[Jettaway]

Bought my hot box on monday and did my first gum removal job yesterday.

Quite enjoyed. Was cleaning the outside of a cafe but wasnt the best site to work on as trades were continually in and out of the cafe as it was a refurb that was behind schedule.

Was cleaning at 90° Is that about right for gum. Got the gum off fairly easily but took slightly longer than planned. Didn't get chance to play with different flows and temperatures.

[Blast Away]

What burner is it pal? What pump and nozzle were you using? Most prob around between 60-70°C on a single burner presuming a 15LPM coil. 140-160°F.
You could drop your throttle and use a smaller nozzle for more heat.

[Jettaway]

This one but with a 21lpm coil http://www.pressurewasherworld.co.uk/#!blank/c18m9

A16lpm interpump and 15° fan jet. I never thought of dropping the flow, just considered upping heat to around 120 next time. Didn't have much chance to play as the work area was too crowded and I wanted to get job finished and get out the way.

[Blast Away]

Look good them mate, first time I've seen them. What size nozzle though? 55?

[Jettaway]

That's the beast mate. A 15 jet nozzle on lance.. Or do you mean connector size from boiler? A firm in Scunny so local to me.

[Matt Gibson]

No mate, Lee means what size nozzle. 15 degrees is the spread of the fan. With a 16lpm you should be using an 05 size nozzle or even an 055. EDIT: 05 nozzle is perfect for200bar/16lpm
http://server23.sitewizard.co.uk/sites/malcleansenew/images/Info%20Sheets/Nozzle_Chart.pdf

If you want more heat, you use a smaller nozzle, or knock the revs down (if thats possible on your machine)
If you use a smaller nozzle, then it effectively drops the flow down, which in turn gives the hotbox more of a chance to heat the water more. If your machine is only 16lpm, and your hotbox is 21lpm, then you shouldnt need to use smaller nozzles, just turn the thermostat up and away you go.

Best thing to do is buy a few different size nozzles, and have a play with it one weekend.

My machine is 21lpm, and my boiler is only a 15lpm coil, so if i want to get it really hot, i use a smaller nozzle and drop the flow down to about 12lpm or even 10lpm.
I should probably look at getting a new 21lpm coil fitted. anyone know if i can just swap the coil and the casing from 15 to 21?

[Jettaway]

Ahh with you mate. The fan nozzles a 0.5 but my turbo and fsc is 0.55.

I'm not sure on coil based on that Matt, I assumed it was a 21 but cant be sure now. Might try knocking down the revs next time.

[Matt Gibson]

How far did you have the thermostat turned up mate? try playing with the thermostat and see what happens, no point knocking the revs down or using smaller nozzles if you dont have to..

[Blast Away]

As Matt said mate. Try a 1504 with throttle down a bit.

We had a 21LPM burner blow up before Christmas. Flow switch stuck on. Back of van all black from smoke.

[Jettaway]

My thermostat has a temperature dial on it, so had it on 90°. Might have a play tomorrow and try 16 LPM at about 120° and then drop flow rate and heat to 90° and see which I prefer.

[Matt Gibson]

the back of my van is black and my hotbox HASN'T blown up!

Need to buy a 90 degree elbow to use as a chimney to vent it out the back doors.

[Jettaway]

Thats an idea pal, 1504 would drop flow quite nicely and can keep revs up.

Ouch… bet that made you panic a bit lol. Was you working when it blew or packing up for the end of the day/night.

[Jettaway]

Matt, I used this http://www.diy.com/nav/fix/plumbing-central-heating/ventilation-air-treatment/metal_ducting/Manrose-100mm-Diameter-Semi-Rigid-Aluminium-Hose-11478268?skuId=11988975 and jubilee clipped it over exhaust. Its not brilliantly durable though, gotta extend it properly other wise it wants to split.

Diesel fumes and spill lingers in the back of your van for ages... Gives me a banging headache

[Simon@Pristine Pathways]

My hotbox stopped working yesterday? 

Might see if I can get a refund! 

[BDCS]

I never move my thermostat off of 120. For gum I use a 40 nozzle - I have a 21 ltr machine and boiler. Keep the unloader turned right up and set the revs so the gauge shows 200 bar with the trigger open. If you don't have a gauge wind the unloader right in then out a turn, rev it till you get some flow out of the return and then back the revs off till it stops. You need just under 100 degrees at the nozzle and you loose heat all the way along the hose.

[Blast Away]

Thats an idea pal, 1504 would drop flow quite nicely and can keep revs up.

Ouch… bet that made you panic a bit lol. Was you working when it blew or packing up for the end of the day/night.

Yeh was pulling hose 60m away round a corner and BOOOOM!  Flame tube exploded, not checked the coil yet.

My thermostat has a temperature dial on it, so had it on 90°. Might have a play tomorrow and try 16 LPM at about 120° and then drop flow rate and heat to 90° and see which I prefer.

°c? It's not gonna do 120°c. Like I said it will do 60-70°c. You mean °F. That dial will be printed with °c upto 150°c. Our Falch do 100°c between the twin burners. Which is 212°F.

the back of my van is black and my hotbox HASN'T blown up!

Need to buy a 90 degree elbow to use as a chimney to vent it out the back doors.

You don't want a 90 degrees mate, it will choke and you'll have sutt dropping back in. I had a 45 degree. Or go up through roof and have a rain cap.

My hotbox stopped working yesterday? 

Might see if I can get a refund! 

  Did you get a receipt mate?

[Simon@Pristine Pathways]

  Did you get a receipt mate?



Only a baseball bat and a train ticket to Marine on Saturday  

[Aqua Power Solutions]

Which hot box do you guys feel is the best on the market in a price range from £1k- £2k ? Or is there one hotbox out there that can produce 150C but obviously not in that price range . Ed  

[Blast Away]

Si, i'm not going mate.  Going out on the (this word is self modded) in Chester with the missus. It's gonna erupt too.

[Blast Away]

Which hot box do you guys feel is the best on the market in a price range from £1k- £2k ? Or is there one hotbox out there that can produce 150C but obviously not in that price range . Ed  

That's pure steam Ed.