Some excavator manufacturers have "arctic" upgrade packages. My understanding is that as long as the vacuum truck is stored inside a warm shop when not in use, the clean water tank will have enough thermal mass to not freeze during most workdays. The vac design may be passing the engine exhaust underneath the tank to warm it too. A heater on the outgoing water helps protect the rest of the circulation system. Employees being careful of freezing risk is important too, not letting things "sit".
On Fri, Dec 4, 2020 at 1:19 PM Chuck McCown via AF <af@af.afmug.com> wrote: > Trying to figure out how to keep my vacuum excavators working in low > temps. Thinking of perhaps a heat exchanger dumping engine heat via the > water jacket or exhaust into the water tank. Thinking of an air purge that > would blow out the hose every time they are done using it. Perhaps some > kind of propane heater to warm up the water tank. > > Looked at heated hoses but most of those are for the spray foam industry. > Might work. > > Any other ideas? How do they do it in your part of the world Colin? > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
-- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
