Eaton Freedom 2100 Installation And Maintenance Manual

Contents

- Page 4 -I.B. 8926-1RATINGSEach Freedom 2100 Motor Control Center has a ratingnameplate attached to the door of the top horizontalwireway of the primary section. See Figures 1 and 2.This nameplate shows the general order number underwhich the motor control center was built and its continu-ous electrical ratings, in terms of incoming line voltage,phases, and frequency, and ampere ratings of the hori-zontal bus and the vertical bus for each section. In addi-tion, this nameplate shows the passive short-circuit (with-stand) rating of the horizontal and vertical bus system.The active short-circuit (interrupting) ratings of the mainand unit short-circuit protective devices are shown onlabels attached to the inside of each unit. Before install-ing a motor control center, calculate and record the faultcurrent available at the incoming line terminals. Verifythat the short-circuit withstand and short-circuit interrupt-ing ratings of the units in the motor control center areappropriate for the fault current available.QUALIFIED PERSONNELIndividuals who install, operate or maintain motor con-trol centers must be trained and authorized to operatethe equipment associated with the installation and main-tenance of a motor control center, as well as the opera-tion of the equipment that receives its power f rom con-troller units in the motor control center.Such individuals must be trained in the proper proce-dures with respect to disconnecting and locking OFFpower to the motor control center, wearing protectiveclothing and equipment, and following established safetyprocedures as outlined in theNational Electrical SafetyCode (ANSI C2) and Electrical Equipment Maintenance(NFPA 70B).RECEIVINGBefore and after unloading the motor control center, in-spect each section and unit exterior for evidence of dam-age that may have been incurred during shipment. Ifthere is any indication that the control center has beenmishandled or shipped on its back or side, remove thedrawout units and make a complete inspection of theinternal structure, bus bars, insulators and unit compo-nents for possible hidden damage. Report any damagefound to the carrier at once.HANDLINGThe following guidelines are provided to help avoid per-sonal injury and equipment damage during handling, andto facilitate moving the motor control center at the jobsite.GENERAL HINTS1. Handle the motor control center with care, to avoiddamage to components and to the enclosure or itspaint finish.2. Keep the motor control center in an upright position.3. Insure that the moving means has the capacity tohandle the weight of the motor control center.4. The control center should remain secured to the ship-ping skid until the motor control center is in its finalPart 2RECEIVING, HANDLING AND STORAGElocation.5. Exercise care during any movement and placementoperations to prevent falling or unintentional rollingor tipping.6. Lifting angles for handling by overhead crane arebolted to the top of each shipping section. Handlingby overhead crane is preferable but when crane fa-cilities are not available, the motor control center canbe positioned with a fork-lift truck or by using rollersunder the shipping skid.OVERHEAD CRANE1. See Figure 3 for recommended lifting configuration.2. Select or adjust the rigging lengths to compensatefor any unequal weight distribution, and to maintainthe motor control center in an upright position.3. To reduce tension on the rigging and the compres-sive load on the lifting angles, do not allow the anglebetween the lifting cables and vertical to exceed 45degrees.4. Use slings with safety hooks or shackles. Do notpass ropes or cables through lifting angle holes.5. After removing the lifting angles, replace the mount-ing hardware to prevent the entrance of dirt, etc.FORK-LIFT TRUCKMotor control centers are normally top and front heavy.Balance the load carefully and steady, as necessary,while moving. Always use a safety strap when han-dling with a fork-lift.