What builds up, and why it matters
On this kind of work the problem is carbonized product, fat, starch, sugar residue and burnt-on build-up. Dry ice leaves no chemical residue on a food contact surface, and no water in a place where standing water is a sanitation problem. That is the whole reason it is used in food production.
Cleaning is usually scheduled around sanitation and production windows. The people who call us about filling equipment are usually sanitation and plant managers, and the thing they are actually worried about is a chemical residue finding its way onto product.
The method
Why dry ice and not the alternatives
- Non-abrasive
The pellet is soft and sublimates on impact, so the work is thermal rather than mechanical. Machined faces, plating, paint and gaskets survive it.
- Low moisture
No standing water in a harness, a bearing or a cabinet, and no dry time before the equipment goes back into service.
- No secondary waste
Sand, soda and walnut shell all have to be swept and hauled. Dry ice leaves only the contaminant it removed.
- Often no teardown
Much of this work is done in place, which is usually where the real saving is. The labor is in the disassembly, not the cleaning.
More food work
Related jobs we get called for
Questions we get asked first
Will it damage the surface underneath?
On most substrates, no. The pellet is soft and sublimates on impact, so it does thermal work rather than mechanical work. We still test an inconspicuous spot first on anything unusual.
Do you have to take the equipment apart for filling equipment?
Usually far less than you would expect, and often not at all. Cleaning in place is where most of the saving comes from, because the labor is normally in the teardown and reassembly.
How much mess does it make?
Far less than the alternatives, because the blasting media disappears. What is left is the contaminant itself, which we contain and clean up.
Do you come to us?
Yes. The whole rig is mobile. Compressor, hose and operator arrive at your shop, plant, driveway or dock, anywhere across South Florida from Miami out to roughly a hundred miles.
What does a job cost?
It depends on the equipment, the contaminant and the access, so we will not throw a number at you over the phone without understanding the work. Describe the job and we will give you a real figure.
How soon can you look at it?
Send photos and a short description and one of the owners gets back to you. If you have a shutdown or a deadline, say so up front and we will tell you honestly whether we can hit it.
The comparison
The other ways to do this
- Media blasting
Effective and indiscriminate. On soft metal or a finished surface it does damage you then have to fix.
- Pressure washing
Forces water where water should not go, looms, bearings, seams, and then the job stops while it dries.
- Solvent and degreaser
Softens the contaminant but leaves a film, fumes and a disposal problem, and attacks finishes you meant to keep.
- Hand scraping
It is the fallback when nothing else is available, and it shows on the surface afterward.
- Dry ice
Cold breaks the bond and the media vanishes. The substrate is untouched and there is no second mess to clean up.
What comes off
The deposits we see most
Most calls involve one of the following. The common factor is a bond between two things that should not be bonded.
- Paint and coatings
Selective removal, layer by layer, on parts where media blasting would cut into the substrate.
- Salt and corrosion product
A constant in South Florida. Removing it without stripping the protective finish is the whole trick.
- Ink and printing residue
Dried ink and coating build-up on rollers and press components, where the surface texture is the product.
- Food residue
Burnt-on product, fat and sugar on processing gear, with no chemical residue left on a contact surface.
- Grease and oil
The soft film that holds dust and swarf against metal. It is what makes a part feel dirty long after it looks clean, and it comes off first.
- Carbon and soot
The hard black crust on a housing, an oven or a weld cell. Bonded by heat, and the first thing to release under thermal shock.
- Adhesive and sealant
Sound deadening, tape residue, gasket material and sealant that has cured onto a face it was never meant to stay on.
How a job runs
What happens once you call
If you have not seen this done before, the process is worth reading once. Nothing below is hidden in a footnote.
- You look before we pack up
A second pass while everything is still connected is free in every sense. A return trip is not.
- You describe the job
What it is, what is on it and whether it can stop. If the answer is that dry ice is wrong for it, you get that answer first, not last.
- We look at access and containment
Access drives the plan: reach, siting, masking, and the route the removed material takes off the job. It is the part customers think about least and we think about most.
- We test a small area
Pressure and pellet size get dialed in on an inconspicuous spot before we touch anything visible. Painted parts, soft alloys and older finishes all behave differently, and the right setting on one is the wrong setting on another.
- We blast, then clean up
The ice is gone the moment it does its work. What stays behind is the grease or carbon that came off, and collecting that is part of the job, not an extra.
What happens in your space
The part will be cold when we finish. Sometimes that means a short wait before handling; sometimes it means a film of condensation as it warms back up.
The rig needs compressed air, which the truck supplies. There is no hookup to find and nothing of yours to plug into.
We cover what should not be hit before anything gets blasted. It takes minutes and saves arguments.
The media is solid CO2, nothing toxic and nothing left behind, but it pushes oxygen out of a closed room. Ventilation gets planned before the hose is connected.
Tell us what needs cleaning.
Send the equipment, the location and a short description. Photos help. You will hear back from Giancarlo or Kenny, not a call center.