Pre-operation Checklists

To verify that the iMCC is operating properly, complete both of the following checklists before energizing the equipment:

MCC Structure

Complete the maintenance procedures beginning in Maintaining the MCC and continuing up to Insulation Test. This initial maintenance is necessary to detect any shipping damage or loose connections. Do not energize the MCC until initial maintenance is complete.

NOTE: The following maintenance procedures are not necessary before energizing the MCC for the first time: Control Unit Removal, Stab Assemblies, Starter Contacts and Barriers/Insulators.
Perform an insulation test on the MCC (see Insulation Test).
If the MCC is equipped with ground fault protection, properly adjust, and test the ground fault protective device before energizing.
Remove all blocks or other temporary holding means from the electrical devices.
Remove any secondary shunt bars from the current transformers. Do not operate a current transformer with its secondary shunt bars open circuited.
Manually exercise all switches, circuit breakers, and other operator mechanisms to help ensure that they are properly aligned and operate freely.
Electrically exercise all electrically-operated switches, circuit breakers, and other mechanisms (but not under load) to help ensure that the devices operate properly. This may require an auxiliary source of control power.
Verify proper interval and contact operation of the timers.
Verify that overload relay FLA is set to proper application setting prior to operation.
Verify that all load and remote-control connections have been made and that they agree with the wiring diagrams provided.
Verify that all ground connections are made properly.
Install the covers and close the doors; verify that they are all properly tightened.

iMCC Communications

NOTICE
LOSS OF COMMUNICATIONS Do not use excessive force when making cabling connections. Connections are keyed to help ensure that pins are properly aligned. Failure to follow these instructions can result in equipment damage.

Before energizing the equipment, check the items below to verify that the iMCC networking and cabling are set up and connected properly:

Cabling Connections
Verify that the network length without a repeater is less than 1500 ft. (457 m).
Verify that the MCC cables are connected between shipping splits. See Cables Between Shipping Splits for instructions.
Verify that each device tap cable is properly connected to the main trunk line.
Verify that all network connections are secure.
Verify that terminating resistors are installed as required per network protocol.

Communications Setup

Verify that all devices have been assigned correct addresses; see Device Addressing for specific addressing parameters.