Duke HDC3 Manual de servicio - Página 10

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Service Manual for Dry Channel HDC3/HDC6 Units

CHANNEL ASSEMBLY

A heating zone consists of a Heater Element,

Hi-Limit Thermostat and an RTD. These

components are embedded in a foil wrap that is

attached to the bottom of each Channel Assembly.

The foil wrap is not serviceable in the field. The

entire Channel Assembly must be replaced in the

event of a failure.

1. Set the Main Power On/Off Switch to the Off

position.

2. Disconnect the Dry Channel unit from its

power source. Use proper Lockout/Tagout

procedures.

3. Remove six screws (three on each side)

attaching the channel top frame to the tub.

Center

Channels

Screw

Figure 12. HDC6 Channel Configuration

End Channels

Center Channel

Screws

Figure 13. HDC3 Channel Configuration

4. Carefully lift the Channel Assembly out, taking

care not to damage wire connections.

5. Tag and disconnect the wires from the foil

wrap on the Channel Assembly to the Control

Board.

6. Reverse this procedure to install a new Dry

Channel Assembly.

NOTE: The End Channels are a different assembly

from the Center Channels. Install the appropriate

channel assembly in its position in the tub.

7. Return the Dry Channel unit to service and

check for proper operation.

End Channels