Topcon ASC-10 - Tank Colors

5.4. Choosing/changing tanks
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5.4.1. Tank colors
Grey tank. Red On/Off.
System is on standby. Tank is turned off.
Check Master Switch and tank On/Off.
Red tank. Green On/Off.
Tank is turned on, but empty.
Blue tank. Green On/Off.
Tank is on.
Blue color dropping shows approximate level of product
remaining.