Figure 3-11. Tarpaulin.
3-11. Cleanup in Freezing Weather.
Freezing moisture may damage lines and valves. You must blow moisture out of
the water system and admix system at the end of the day or if an extended delay is
foreseen at the job site.
a. Blow Moisture from the Liquid Admix Systems.
(1) Open the vent and draincocks on each flowmeter (fig. 3-12).
(2) Open the vents and draincocks on the sight gages (fig. 3-13). Open the vents on the fill caps. Turn the
drain valves counterclockwise to open them
The air shutoff valve (fig. 3-14) must be open during step 3.
(3) Open the air gate valves (fig. 3-13). When no more admix comes from the draincocks and drains, close the
air gate valves.