Drain and Replace Coolant

The AON-M2 2020 is equipped with a different style of pump from the original AON-M2 model. Instructions for both systems can be found on this page:

AON-M2 2020 Instructions

Tools

Qty Description Specification
1 Large Screwdriver Flathead
1 Hand vacuum pump OR Compressed air (15 psi) N/A
1 Tubing 1/4 in. (6.4 mm) ID x 2 ft. (600 mm)
1 Bucket 3 L minimum
1 Cloth Absorbant

Personal Protective Equipment

Qty Description Specification
1 Safety Glasses N/A
2 Nitrile Gloves N/A
1 Long Clothing N/A
  1. Use a coin or large flathead screwdriver to remove the cap from the top of the pump.
  2. Place a bucket directly under the radiator bleed valve located at the rear of the machine.
  3. With the pump running, unscrew the bleed valve to let the coolant drain into the bucket. Drain coolant using the bleed valve
  4. When the pump reservoir is nearly empty, turn off the power with the ON/OFF switch at the back of the machine. Turn off the pump
  5. Attach a piece of tubing to the bleed valve and place the other end in the bucket. Attach tubing to the bleed valve.

    If using compressed air, do not exceed 15 psi. Exceeding 15 psi can cause damage to the cooling circuit.

  6. Place the hand vacuum pump or compressed air source against the opening at the top of the pump reservoir. Force air into cooling circuit.
  7. Force air into the cooling circuit to push coolant out of the machine using the hand vacuum pump in the pressurize mode. Do this until all the coolant has been drained.

    Used coolant should always be disposed of according to local regulations.

  8. Remove the tubing from the bleed valve.
  9. Screw the bleed valve shut.
  10. Fill the cooling circuit. Refer to Filling the Cooling Circuit.

AON-M2 Original Model Instructions

Tools

Qty Description Specification
1 Large Screwdriver Flathead
1 Hand vacuum pump OR Compressed air (15 psi) N/A
1 Bucket 3 L minimum

Personal Protective Equipment

Qty Description Specification
1 Safety Glasses N/A
2 Nitrile Gloves N/A
1 Long Clothing N/A
  1. Turn off the power with the ON/OFF switch at the back of the machine. Turn off the pump
  2. Place a bucket directly under the radiator located at the rear of the machine. Position a bucket to catch the draining coolant.
  3. Use a coin or large flathead screwdriver to remove the black cap on the coolant reservoir. Remove the black cap.
  4. Place a cloth or paper towel under the right quick-connect, ready to catch any coolant that may come out.
  5. Disconnect the right quick-connect by pressing on the green collar and gently pulling the grey connector. Quickly put the disconnected tube in the bucket. Remove the coolant drain tube.
  6. Let the coolant drain into the bucket.

    If using compressed air, do not exceed 15psi. Exceeding 15psi can cause damage to the cooling circuit.

  7. Place the hand vacuum pump or compressed air source against the green collar of the right quick-connect.
  8. Force air into the cooling circuit to push coolant out of the machine using the hand vacuum pump in the pressurize mode. Do this until all the coolant has been drained.

    Used coolant should always be disposed of according to local regulations.

  9. Reconnect the right quick-connect.
  10. Fill the cooling circuit. Refer to Filling the Cooling Circuit.

Last modified: March 15, 2021