Applies to: N4+

Exchanging the cooling liquid and cleaning the cooling liquid tank

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Design of the cooling liquid drawer

 

  1. Strainer basket cover*
  2. Strainer basket
  3. Cooling liquid tank cover
  4. Cooling liquid tank
  5. Cooling liquid drawer

* Not all machines include a stainer basket cover.

Preparation

  1. Have ready:

    • Collecting container that can hold approx. 10 l

    • Cleaning brush

    • Water for cleaning the cooling liquid tank

    • Small cleaning brush

    • Carbon pellets and spare fine filter (optional)

    • A mild cleaning agent (optional)

  2. Make sure that sufficient cooling liquid is available.

  3. Open the cooling liquid drawer.
  4. Lift the cooling liquid tank out of the drawer.

    5. When you tilt the cooling liquid tank, the cover will not prevent the cooling liquid from leaking.

    Serial number N4PD...

    Serial number N4PF...

Cleaning the strainer basket

  1. If present: Remove the strainer basket cover.

  2. Lift the cover, including the strainer basket, off the cooling liquid tank.

    3.  

  3. Lift the strainer basket out of the cover.

    4.  

  4. Clean the strainer basket:

    1. Tap out the strainer basket into the collecting container.

    2. While rinsing the strainer basket under running water, clean it thoroughly with the cleaning brush.

Cleaning the cooling liquid filter and exchanging the carbon pellets

There are the following variants of the cooling liquid filter:

Variant B

 

  1. Fine filter
  2. Cap of the carbon filter
  3. Carbon filter
  4. Mesh filter

Variant C

 

  1. Fine filter
  2. Cap of the carbon filter
  3. Carbon filter
  4. Filter housing
Variant Current Filter fixation Nut required?

B

No

Screwed

Yes*

C

Yes

Screwed

Yes*

**An additional nut fixates the coupling of the cooling liquid tank onto which the filter is screwed. The nut is supplied with the spare part.

  • Older versions are possible no longer be available as spare parts.

  • All variants are compatible with all cooling liquid tanks.

    1. Pull off the fine filter.

    2. Loosen the filter housing with a twisting motion and unscrew it.

    3. Rinse the back of the filter housing with running water.

       

    4. Clean the outer and inner mesh filters with a small brush.

       

       

    5. If you need to exchange the carbon pellets according to the interval in the maintenance table, do the following:

      1. Remove the cap of the carbon filter from the filter housing by turning and pulling it at the same time.

         

      2. Empty the carbon filter. Dispose of the carbon pellets.

         

      3. Fill new carbon pellets into the carbon filter up to approx. 1 mm below the edge.

         

      4. Fixate the cap of the carbon filter by turning and pressing on the filter housing at the same time.

         

        • The cap of the carbon filter sits flush on the filter housing.

           

      5. If you have not exchanged the carbon pellets, clean the fine filter carefully under running water.

         

        If you have exchanged the carbon pellets, have a spare fine filter ready.

      6. Recommendation: Clean the coupling of the cooling liquid tank.

      7. Screw the filter housing onto the coupling in the cooling liquid tank.

      8. Slide the cleaned fine filter or the spare fine filter onto the filter housing. Make sure that the fine filter completely covers the filter housing.

    NOTICE! Damage to the cooling liquid filter due to incorrect loosening

  1. Grasp the filter housing by the metal ring and loosen it with a twisting motion.

  2. Screw off the filter housing.

    3.  

    1. Remove the fine filter by stretching the top end slightly and pulling it straight off the filter with both hands.

       

    2. If you need to exchange the carbon pellets according to the interval in the maintenance table, do the following:

      1. Unscrew the cap of the carbon filter from the filter.

         

      2. Empty the carbon filter. Dispose of the carbon pellets.

      3. Clean the carbon filter and dry it with a cloth.

      4. Fill new carbon pellets into the carbon filter.

         

      5. Firmly close the carbon filter with the cap.

        6. NOTICE! Damage to the fine filter due to excessive rubbing

      6. If you have not exchanged the carbon pellets, clean the fine filter carefully under running water.

        If you have exchanged the carbon pellets, have a spare fine filter ready.

      7. Recommendation: Clean the coupling of the cooling liquid tank.

      8. Slide the cleaned fine filter or the spare fine filter onto the filter housing.

        • Make sure that the fine filter covers the filter completely.

        • If the fine filter is too long, cut it to the length of your cooling liquid filter.

      9. Screw the fine filter onto the coupling in the cooling liquid tank.

Cleaning the cooling liquid tank

  1. Empty the contents of the cooling liquid tank container into the collecting container.
  2. Thoroughly clean the cooling liquid tank with the cleaning brush.

  3. Empty the dirty water into the collecting container.

    If you have used a cleaning agent, make sure that there is no residue of it in the cooling liquid tank.

  4. Remove dirt and foreign bodies from the coupling (marked blue) of the cooling liquid tank.

     

  5. If present: Clean the strainer basket cover.

Completing maintenance

  1. Place the cover onto the cooling liquid tank.

  2. Insert the strainer basket into the cooling liquid tank cover.

  3. If available: Place the cover of the strainer basket onto the cooling liquid tank.

  4. Fill in cooling liquid.

  5. Insert the cooling liquid tank into the drawer.

     

  6. Close the cooling liquid drawer.