Coolant Concentration with Brix Refractometer
Maintaining the Tormach Coolant
The Tormach uses Qualichem 250C coolant which is mixed with water.
A concentration of ~9% is the desired concentration for machining. As the machine is used, water evaporates: the concentration increases and the total amount decreases. On top of balancing concentration, we need to make sure there is a good coolant amount, otherwise the flow will decrease or seize completely.
You can see the coolant level (amount) on the coolant tray using the handy see-through scale. If the coolant level decreases past "4", you should refill the coolant tray with water / coolant concentrate, making sure the concentration overall is ~9% (add more water if too high, add concentrate with water if too low).
Use the Brix Refractometer to measure the current coolant concentration. Instructions:
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