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Knowledge Base Article

DWX-4 4-Axis Dental Milling Machine

Title
DWX-42W- Periodic Care and Maintenance Replacing the Coolant
Summary
DWX-42W- Periodic Care and Maintenance Replacing the Coolant
Details

CAUTION: Do not overfill or tilt the coolant tank.The fluid inlet on the coolant tank is open.
Overfilling or tilting will cause fluid to spill out.

CAUTION: When raising or lowering the coolant tank, hold the position indicated in the following figure.
Failing to do so may result in your fingers being pinched, leading to injury.

When to Perform This Task

  • Once a week
  • When the following message is displayed in VPanel"



Important
Using coolant that is past its expiration date will decrease the durability of the filters. Be sure to replace the coolant once per week or when instructed to do so by the message displayed in VPanel.

Items to Prepare Separately
  • Water (soft or purified water)
This is required in order to make the coolant. Use soft or purified water. Using hard water may have a negative effect on the service life of the milling bur and on the quality of the product.
To make the coolant, you have to prepare the specified additive separately. To purchase additives, contact your authorized DGSHAPE Corporation dealer or access our website (https://dgastore.rolanddga.com ).
The ZCH-250D (hereinafter referred to as the "chelating reagent") works to make calcium and other substances contained in water inactive. Including it in this product makes it easier to clean off milling powder that adheres to the machine and the cutting tool after milling. To purchase chelating reagent, contact your authorized DGSHAPE Corporation dealer or access our website (https://dgastore.rolanddga.com).


Replacing the Coolant

Drain the old coolant

  1. Show VPanel.
  1. Select the machine to operate.
  1. Click
The following window is displayed.
  1. Open the bottom cover.
  2. Pull out the coolant tank.
Important:
Move the coolant tank slowly. Forcefully moving the coolant tank may cause the coolant to spray out.
 

Dispose of the old coolant.

  1. Remove the lid of the coolant tank tray.
  1. Tilt the coolant tank tray slightly to pour the accumulated coolant into the tank.
  1. Remove any milling waste that remains on the tray.
  1. Remove the drain cap of the coolant tank, and then drain the coolant.
Note:
Dispose of coolant and milling waste appropriately in accordance with local regulations. Do not thoughtlessly dispose of them in sewers or rivers or dump them in inappropriate locations. Doing so may have an adverse impact on the environment.
 
  1. Clean the inside of the coolant tank.Pour a little tap water into the tank, shake the tank to the left and right, and then dispose of the dirty water. Repeat this operation two or three times.
  2. Attach the drain cap to the coolant tank.

 

Pour in the new coolant.

  1. To make the coolant, mix the water, additive (ZAW-1000D), and chelating reagent (ZCH-250D) at fixed ratios. Use the included measuring cup for measuring.
  • Water: Mix water and additive in the ratio of “95:5” (water:additive).
    • There is no need to stir the solution.
    • The capacity of the coolant tank is approximately 5 L. To fill the tank, use 4,750 ml of water and 250 ml of additive
  • Water + additive solution: Mix the water + additive solution and chelating reagent in the ratio of “400:1” (water + additive solution:chelating reagent).
    • There is no need to stir the solution.
    • To fill the tank, use 5,000 ml of water + additive solution and 12.5 ml of chelating reagent.
 
CAUTION
Be sure to use the specified additive. Additives are effective in reducing coolant deterioration and raising the milling efficiency in order to maintain product performance. Furthermore, if additives are not used, the coolant may generate an unpleasant odor.
CAUTION
Be sure to use the specified chelating reagent. The chelating reagent works to make calcium and similar substances contained in the water inactive, making it easier to clean off milling powder that adheres to the machine and the cutting tool after milling.

Refer to the appropriate safety data sheet (SDS ) for the chemical substances used in the additive and chelating reagent and the safety related to those substances�To purchase additives, contact your authorized DGSHAPE Corporation dealer or access our website (https://dgastore.rolanddga.com
  1. Pour in the coolant.
  1. After filling the tank with coolant, put the tray and lid on the coolant tank.
  1. Return the coolant tank to its original position.
  1. Push the coolant tank toward the back of the machine.Push the coolant tank to the point where you feel a click.
Point
Align the  label affixed to the right side of the tank with the  label affixed to the machine.
 
Important
Move the coolant tank slowly. Forcefully moving the coolant tank may cause the coolant to spray out.
  1. Close the bottom cover. This completes the procedure for replacing the coolant.

Modified
May 12, 2020