M A I N T E N A N C E | For Machines Mfg. Since 3/11 |
Coolant System
Service
The coolant system consists of a fluid tank, pump, and flexible nozzle. The pump pulls fluid from the tank and sends it to the valve, which controls the flow of coolant to the nozzle. As the fluid leaves the work area, it drains back into the tank through the chip drawer and catch tray where the swarf is screened out.
Use Figure 118 to identify the locations of the coolant system controls and components.
Coolant | Nozzle | Valve |
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Pump Switch |
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Catch | Chip Drawer |
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Tray |
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Pump & Tank (Inside Cabinet) |
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Figure 118. Coolant system controls and components.
Although most swarf from machining operations is screened out of the coolant before it returns to the tank, small particles will accumulate in the bottom of the tank in the form of sludge. To prevent this sludge from being pulled into the pump and damaging it, the pump’s suction tube is positioned a couple inches from the bottom
of the tank and fitted with a fine screen. This works well when the tank is regularly cleaned; however, if too much sludge is allowed to accumulate before the tank is cleaned, the pump will inevitably begin sucking it up.
Hazards
As coolants age, dangerous microbes can proliferate and create a biological hazard. The risk of exposure to this hazard can be greatly reduced by replacing the old fluid on a monthly basis, or as indicated by the fluid manufacturer.
The important thing to keep in mind when working with the coolant is to minimize exposure to your skin, eyes, and lungs by wearing the proper PPE (Personal Protective Equipment), such as
BIOLOGICAL & POISON
HAZARD!
Use the correct personal protection equipment when handling coolant. Follow federal, state, and fluid manufacturer requirements for proper disposal.
