Duke HDC3-37.5-208 Manuel d'entretien - Page 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
10
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