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2. Heat exchanger
<Procedure>
1. Remove the intake grille.
2. Remove the two screws for the access panel, and after sliding the panel up about 30 mm, draw it toward
you to remove it.
* E-type retaining rings (E-ring) are provided with the screws for access panel to prevent the screw from
coming off the panel. Unfasten the E-ring until it can be turned, and then remove the panel.
3. Remove the heat exchanger assembly in front of you in following procedures.
• RM56, RM80
1) Remove the Screw 1 (four screws) that fixes the unit to the upper shield plate, and then draw the
heat exchanger assembly toward you.
2) Remove the Screw 2 (two screws) on the heat exchanger to remove the upper shield plate.
3) Remove the Screw 3 (four screws) on the heat exchanger to remove the shield plate.
4) Remove two types of temperature sensor from the heat exchanger assembly to remove the heat
exchanger assembly.
• RM110 to RM160
1) Remove the Screw 1 (three screws) that fixes the unit to the upper shield plate, and then draw the
heat exchanger assembly toward you.
2) Remove the Screw 2 (two screws) on the heat exchanger to remove the upper shield plate.
3) Remove the Screw 3 (four screws) on the heat exchanger to remove the shield plate.
4) Remove two types of temperature sensor from the heat exchanger assembly to remove the heat
exchanger assembly.
Access panel
<RM56, RM80>
<RM110 to RM160>
Upper shield plate
Upper shield plate
Shield plate
1
1
1
1
1
2
2
2
2
3
3
3
Shield plate
