EN-20
Kendall SCD 700 Series
• Remove the muffler by detaching the compressor intake tubing and pullingthe compressor outlet check valve from
its retaining clip.
• Remove the three screws holding it in place and remove the muffler.
• Remove the three screws from the valve manifold assembly and pull it from the enclosure.
• Installation is the reverse of removal.
Power Supply Board (Removal / Installation)
CAUTION:
Use a grounded strap when handling any electronic components.
• The power supply has no user serviceable parts except for the fuses. No attempt should be made to repair a dam-
aged supply. Return to the factory for repair or replacement.
• Disconnect the 4-pin controller board wiring harness from the power board.
• Remove the tubing in front of the power supply.
• Disconnect equipotential lug wire.
• The power supply board is held in place by channels on the side of the rear case as well as retaining brackets on
the front case.
• To remove the power board slide, the board out from the rear case.
• Installation is the reverse of removal.
Fan and Fan Filter (Removal / Installation - see Figure 6)
• The fan filter is located in a pocket within the power cord attachment area. With the power cord door and power
cord removed, reach in from the rear of the controller to remove the filter for cleaning or replacement.
• To remove the fan, disconnect the 2-pin fan connector from the power board. Cut wire ties as required, noting
their locations for reassembly.
• Remove the three screws from the fan and remove it from the enclosure.
• Installation is the reverse of removal. Use care to ensure that the direction of flow is correct. The fan is intended to
pull air through the power cord door. Note the molded arrow in the fan case showing the flow direction.
• For optimum cooling and quietness, use only Covidien replacement fans.
Main CPU Board and Graphical Display (Removal/Installation - see Figure 6)
CAUTION:
Use a grounded strap when handling any electronic components.
• The main CPU board has no user serviceable parts. No attempt should be made to repair a damaged board.
Return to the factory for repair or replacement.
• The main CPU board is mounted to the inside of the front enclosure
• Disconnect the 4 pin controller board wiring harness from the power board.
• Disconnect the various wire harnesses plugged into the board.
• Remove the 4 Screws holding the board in place. Remove the Main CPU Board being careful not to drop the
Graphical Display as it is not rigidly attached.
• To remove the Graphical Display detach the ribbon cable from the Main CPU Board then pull it free.
• Be sure the graphical display gasket is entirely removed from the inside of the front enclosure.
• Installation is the reverse of the removal.
Adjustable Bed Hook (Removal/Installation)
• The Adjustable Bed Hook can be removed without disassembly of the entire controller.
• Facing the rear of the controller, locate and remove the screws that hold on the pivot cover.
• Place the controller on its front on a non-marring surface.
• Grasp both the left and right sides of the bed hook at the pivot point. Pull the bed hook out while simultaneously
rotating the bed hook up toward the top of the controller.
• Torsion springs may snap free or slide off the mandrel of the pivot. Use care so the torsion springs do not release
hazardously. Note their location for ease of reassembly.
• When reinstalling reverse these steps, being careful to start reinsertion with the bed hook rotated upward toward
the top of the controller
