SERVICE MANUAL MODELS 200 NDNL

COOLING FAN

1. Follow the LOCKOUT/TAGOUT procedure using the procedures provided in the Lockout/

Tagout Procedures section of this manual.

2. Remove the Power Head Lid following the instructions provided in the Panels and Covers section of this manual.

3. Unplug the leads from the fan.

4. Remove the four screws securing the fan to the Power Head.

Figure 10: Cooling Fan

5. Reverse this procedure to install the new

Cooling Fan.

WARNING

Before removing any sheet metal panels or servicing this equipment, always perform the Electrical LOCKOUT/TAGOUT Procedure.

Be sure all circuits are disconnected. Failure to comply with this procedure can cause property damage, injury or death.

WARNING

Certain components may be hot if the unit was in operation prior to performing a procedure. Allow the unit to cool before beginning work.

POWER CORD

1. Follow the LOCKOUT/TAGOUT procedure using the procedures provided in the Lockout/

Tagout Procedures section of this manual.

2. Remove the Power Head Lid following the instructions provided in the Panels and Covers section of this manual.

3. Disconnect the Power Cord from the Contactor and remove the ground screw securing the green ground wire to the unit’s chaise.

4. Refer to the unit’s schematic, connect the new power cord.

5. Restore power to the unit.

6. Verify unit is working properly.

7. Remove the unit from its power supply.

8. Reattach the Power Head Lid

9. Restore power to the unit and ensure unit is operating correctly.

POWER BOARD COMPONENTS

The Power Board Components include the Solid

State Relay, Contactor, 120VAC Float Board and the Neutral Lug. Under normal circumstances it should not be necessary to replace either the

Contactor or Neutral Lug.

120VAC

Float

Board

Neutral

Lug

Contactor

Solid State

Relay

Power

Board

Figure 11: Power Board Component Locator

NOTICE: The Power Board is mounted on plastic risers that allow for air flow on the underside of

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