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Allen-Bradley CENTERLINE, Instruction Manual

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Allen-Bradley CENTERLINE Instruction Manual Download Page 51

Publication 2100-IN012B-EN-P - April 2005

Installing and Removing Plug-In Units        

5-3

Figure 5-3 Removing the Unit Door

1.

Swing door to near closed position.

2.

Lift door outward to remove.

Figure 5-4 Disengage the Captive Latches

1.

Disengage captive latches located at front of unit, one at top and one at 
bottom of the unit. Units that are 2.0 space factor and larger have two 
latches at top.

2.

Detach front portion of pull-apart terminal blocks from the unit base. 
Place wires/terminal blocks in line with wiring clearance tunnel.

3.

Remove other cables or devices that would prevent unit withdrawal.

Wiring 
Tunnel

Summary of Contents for CENTERLINE

Page 1: ...CENTERLINE Low Voltage Motor Control Centers Instruction Manual ...

Page 2: ...assume responsibility or liability for actual use based on the examples and diagrams No patent liability is assumed by Rockwell Automation Inc with respect to use of information circuits equipment or software described in this manual Reproduction of the contents of this manual in whole or in part without written permission of Rockwell Automation Inc is prohibited Throughout this manual when necess...

Page 3: ...ections 1 9 Receiving Handling and Storage 1 10 Receiving 1 10 Handling 1 11 Storage 1 12 Chapter 2 Installation Procedures Location Planning 2 1 Height Considerations 2 1 Securing a Motor Control Center 2 2 Seismic Requirements 2 6 Joining Splicing New Motor Control Centers 2 7 Joining Splicing Existing Motor Control Centers 2 8 Installing and Joining Pull Boxes 2 8 Joining and Splicing NEMA Type...

Page 4: ... Arc Flash Protection Marking as Required by the National Electrical Code Flash Protection Marking Requirement 6 1 110 16 Flash Protection 6 1 Arc Flash Marking Clarification 6 2 Rockwell Automation Assistance 6 2 Chapter 7 Operator Handle and Unit Interlock Defeating the Unit Door Interlock 7 1 Opening the Door when the Operating Handle is in the ON I Position 7 1 Defeating the Unit Interlock Lev...

Page 5: ...rmation 11 1 Chapter 12 Parts Illustrations Typical Section Construction 12 1 Typical Construction of a Unit with a Vertical Operating Handle 12 2 Typical Construction of a Half Space Factor Unit with a Horizontal Operating Handle and Door Mounted Pilot Devices 12 3 Typical Construction of a Unit with a Horizontal Operating Handle 12 4 Rockwell Automation Support Inside Back Cover Installation Ass...

Page 6: ...Publication 2100 IN012B EN P April 2005 iv ...

Page 7: ...ication use x as a placeholder for the revision letter When referencing and or ordering always use the latest revision available Arc Resistant Low Voltage Motor Control Center Designs 2100 AP003x EN P Power Factor Correction Capacitors for Bulletin 2100 Motor Control Center Starter Units 2100 AT001x EN P Arc Flash Protection Marking Guide for CENTERLINE Motor Control Centers 2100 AT002x EN P CENTE...

Page 8: ...Publication 2100 IN012B EN P April 2005 vi ...

Page 9: ...factors or 78 1981 mm for units Units buckets are designed in increments of 0 5 space factors Each 0 5 space factor is approximately 6 5 165 1 mm high Units are designed as either removable plug in or frame mounted non plug in Individual units house a wide variety of power and logic devices Plug in units are mounted on unit support pans within the section Stab assemblies located on the back of the...

Page 10: ...lug in units or on the interior right hand side plate of the frame mounted units see Figure 1 2 The unit label for each plug in or frame mounted unit includes Catalog Number Serial Number Series Letter of the Unit Voltage Rating Unit Location UL and cUL Certification Marking Device Type and Size Figure 1 2 Unit Label NOTE The catalog number or serial number and series letter are required to proper...

Page 11: ... sequential order 2 Addition of a single section add on section 3 Addition of multiple sections add on lineup of sections 4 Addition of single section or multiple section between MCC sections If sections are added to an existing lineup and not installed in sequential order the installation should not be considered a misapplication or in conflict with Underwriter Laboratories UL listing and Canadia...

Page 12: ... and cUL CSA certified The UL and or CSA cUL designation is an integral part of the section nameplate See Figure 1 1 Units and unit options that are UL listed and CSA cUL certified are marked accordingly All options and components in a UL and or cUL CSA listed unit must be UL listed or recognized and or cUL CSA certified The UL designation is located on the interior of the bottom plate of plug in ...

Page 13: ...or control center units that are UL listed and or CSA cUL certified will carry a short circuit rating label located on the bottom plate of plug in units or on interior right hand side plate of frame mounted units See Figure 1 6 Figure 1 6 Short Circuit Label for Units ...

Page 14: ...1981 E 1 All All redesign gasketing October 1982 F 1 All Modified top horizontal wireway pan to accept units with handle interlock in topmost space factor October 1983 G 1 42K 42K bracing incorporates new bus support cover January 1985 G 1 65K 65K bracing incorporates new bus support cover July 1985 H All New hinge design January 1986 J All Changed handle operating mechanism and circuit breaker to...

Page 15: ... All sizes Changed to PCP 200A and 400A disconnect rerated vacuum Bulletin 2112 and 2113 and new pilot device offerings January 1993 P 0 5 SF CB units 2103L 2113 2193 External auxiliary on circuit breakers April 1994 Q All sizes and ratings New disconnect external auxiliary contacts and new 600A 1200A circuit breaker operating mechanism May 1996 R SMC units Redesign and upgrade of ratings for 24A ...

Page 16: ...une 1990 B 18A 24A 30A Changed to Series B Bulletin 194R 30A disconnect March 1992 C 18A 24A 30A Changed to three Bulletin 800E pilot devices on 0 5 space factor units July 1992 D All sizes New disconnect external auxiliary contacts and new 600A 1200A circuit breaker operating mechanism February 1996 16A 85A Original design of units with a Bulletin 100 C contactor September 1999 ...

Page 17: ...pe 12 Series E J 7 0 5 2 N or later 9 9 9 1 0 or larger A E 4 9 8 F L 4 9 M or later 9 NEMA Type 1 w gasket or Type 12 Series K or later 0 5 2 N or later 9 1 0 or larger A L 4 9 8 M or later 9 1 When installing unit in topmost location in vertical sections care must be taken to comply with the 2005 National Electrical Code reference code Article 404 8 and UL 845 6 7 2000 mm unit handle to floor he...

Page 18: ...N040x EN P for receiving handling and storage instructions This publication is shipped with each MCC attached to the outside of the MCC within the layer of clear plastic wrap For additional information about the handling installation operation and maintenance of motor control centers rated more then not 600 volts consult NEMA ICS 2 3 1995 Export Packaging A maximum of three vertical sections stand...

Page 19: ...ted 2 section block 1000 454 96 244 36 91 43 109 Front Mounted 3 section block 1500 680 96 244 36 91 63 160 Back to Back 2 section block 1000 454 96 244 42 107 43 109 Back to Back 4 section block 1800 816 96 244 42 107 43 109 Back to Back 6 section block 2200 998 96 244 42 107 63 160 Export Packing below deck 1 Weight lbs kg Height inches cm Depth inches cm Width inches cm Front Mounted 1 section ...

Page 20: ...emperature should remain above 22o F 30o C but not exceed 149o F 65o C In addition MCCs have an altitude class of 2 km The altitude class of 2 km designates equipment for installation where the altitude does not exceed 2000 meters 6600 feet ATTENTION Motor control centers are top and front heavy To avoid personal injury or structural damage never attempt to lift or move the motor control center by...

Page 21: ...nd the environment must be compatible with the NEMA enclosure rating of the equipment Height Considerations If the motor control center is equipped with optional external mounting channels or is mounted on a pad the height from the floor to the center of the top handles must be checked for compliance with 2005 NEC 404 8 A and UL Standard 845 If the distances from the floor to the center of the hig...

Page 22: ... to installation Two bolts per vertical section fasten the motor control center through its internal mounting angle to the foundation corner sections require three bolts and 40 1016 mm wide sections require four bolts See Figure 2 2 through Figure 2 6 for general dimensions Dimensions matching your equipment can be found on the elevation drawings shipped with your MCC HEIGHT OF HANDLE 6 7 MAX FLOO...

Page 23: ...n 15 Deep 20 Deep 20 Wide 25 Wide 30 Wide 35 Wide 20 Wide 25 Wide 30 Wide 35 Wide in mm in mm in mm in mm in mm in mm in mm in mm A 20 00 508 25 00 635 30 00 762 35 00 889 20 00 508 25 00 635 30 00 762 35 00 889 B 15 00 381 15 00 381 15 00 381 15 00 381 20 00 508 20 00 508 20 00 508 20 00 508 C 11 56 294 11 56 294 11 56 294 11 56 294 16 56 421 16 56 421 16 56 421 16 56 421 D 10 00 254 12 50 318 15...

Page 24: ...us C Front Front Rear Rear D D 20 Deep 40 Deep 20 Wide 25 Wide 30 Wide 35 Wide 20 Wide 25 Wide 30 Wide 35 Wide in mm in mm in mm in mm in mm in mm in mm in mm A 20 00 508 25 00 635 30 00 762 35 00 889 20 00 508 25 00 635 30 00 762 35 00 889 B 30 00 762 30 00 762 30 00 762 30 00 762 40 00 1016 40 00 1016 40 00 1016 40 00 1016 C 11 56 294 11 56 294 11 56 294 11 56 294 16 56 421 16 56 421 16 56 421 1...

Page 25: ...08 B 11 56 294 16 56 421 Interior Section Width 20 508mm Wide 25 635mm Wide 30 762mm Wide in mm in mm in mm A 25 00 635 30 00 762 35 00 889 B 13 75 349 16 25 413 18 75 476 C 11 25 286 13 75 349 16 25 413 25 6mm 7 15 102mm 10 00 254mm 40 00 1016mm 20 00 508mm 10 00 254mm 1 69 43mm A B 4 Mounting Slots 56 x 1 13 Slots 14mm x 29mm Slots Rear Front Standard Ground Bus 2 87 73mm 14 06 337mm 16 56 421mm...

Page 26: ...ation and testing qualify the CENTERLINE MCC of sufficient integrity to exceed a Zone 4 seismic withstand per the UBC s requirements i e neither the MCC structure units components or electrical functions will be compromised when subjected to a Zone 4 seismic event NOTE Zone 4 is the maximum UBC seismic magnitude To obtain a UBC Zone 4 seismic withstand rating each CENTERLINE MCC line up i e both f...

Page 27: ...nect the main horizontal bus In addition the neutral bus splice kit if required and the ground bus splice kit must be installed between shipping blocks Refer to 2100 IN010x EN P Joining Splicing Vertical Sections HARDWARE REQUIRED IS 1 2 INCH GRADE 2 OR BETTER BOLTS EMBEDDED IN FOUNDATION REAR FRONT FIRST SECTION 2ND SECTION AND ADDITONAL SECTONS LAST SECTION MOTOR CONTROL CENTER LINE UP E E REAR ...

Page 28: ...cation 2100 5 28 Installing a Pull Box on a Bulletin 2100 Vertical Section for installing and joining the pull box onto the vertical section Joining and Splicing NEMA Type 12 Motor Control Centers NEMA Type 12 MCCs must be properly installed to prevent the ingress of dust and dirt Follow the caulking instructions publication 2100 IN037x EN P supplied with the NEMA 12 MCC Using caulk close any moun...

Page 29: ...d side plate of frame mounted units 2 Wireway extensions required for 15 deep 2 Wireway extensions required for 20 deep 1 25 20 X 75 taptite per wireway extension Remove right hand driphood angle and discard Drillout 5 172 diameter holes to 1 4 diameter in driphood Remove left hand driphood angle and remount after adjacent driphood has been drilled out 2 25 X 50 Taptites Taptites Taptites 2 or 4 2...

Page 30: ...Publication 2100 IN012B EN P April 2005 2 10 Installation Procedures ...

Page 31: ...r the MCC such as component manuals heater element instructions MCC manuals and wiring diagrams Blank sample forms are provided at the end of this chapter Perform a Pre Energizing Check Procedure NOTE The following procedures should be executed by a qualified person as defined by NEMA Standards Publication No ICS 2 3 Instructions for the Handling Installation Operation and Maintenance of Motor Con...

Page 32: ...d and anchored if necessary or required ATTENTION To ensure the safety of personnel performing the pre energizing check make sure the motor control center remote power source s is disconnected and locked in the OFF O position Using a voltmeter verify that the motor control center remote power source s is disconnected ATTENTION Power factor correction capacitors PFCCs should be applied correctly Fo...

Page 33: ...e NEC 167o F 75oC wire tables B Removal of barrier s may have been required for field wiring Check and ensure that all barriers and parts that may have been removed during installation have been reinstalled It is recommended that a barrier checklist is developed including such items as unit location barrier location etc This checklist should be saved for future reference C Make certain all incomin...

Page 34: ...orque values for fuse clamp screws can be found on the unit wiring diagram Verify that all fuses fit each application 10 For circuit breaker applications verify that the circuit breakers are in accordance with NEC application requirements and have correct ampacity and trip settings Refer to publication 2100 TD001x EN P and 2100 TD002x EN P for circuit breaker information in MCC units NOTE High eff...

Page 35: ... are NOT open but are either connected to their respective devices or shorted 16 Recheck and ensure that all barriers and parts that may have been removed during installation have been reinstalled Refer to the barrier checklist 17 Before closing the enclosure and or individual units remove all tools metal chips scrap wire and other debris from the MCC interior If there is an accumulation of dust o...

Page 36: ...r readings to be recorded during regular maintenance periods 19 Make sure all unit latches are secure Close and latch all doors making certain that no wires are pinched All section closing plates must be in place Table 3 A General Spacing Requirements for Motor Control Centers 1 2 3 Voltage involved Minimum spacing inch mm Between live parts of opposite polarity Between live parts and grounded met...

Page 37: ...hrough air Over surface Shortest distance 125 or less 1 8 3 2mm 2 1 4 6 4mm 1 2 12 7mm 126 250 1 4 6 4mm 3 8 9 5mm 1 2 12 7mm 251 600 3 8 9 5mm 1 2 12 7mm 1 2 12 7mm 1 Reference Underwriters Laboratories Inc Standards for Motor Control Centers UL 845 Tables 16 1 and 16 3 2 The spacing between wiring terminals of opposite polarity shall not be less than 1 4 6 4 mm if the terminals are in the same p...

Page 38: ...E 1G Horizontal Wireway Horizontal Wireway 1 0 S F 13 330 mm Unit Location Unit Data Catalog Number Wiring Diagram Size or Amp Rating Description Full Load Current Horsepower Overload or Heater Elements Kilowatts Circuit Breaker Trip Setting Power Fuse Rating 1A 2113B EDB 48CA CSXXXXXXXX 4 FVNR 77 60 W73 C 1E 2112A BDBD 24J 38 7FEC1A Y XXXXXX 1 FVNR 4 8 3 7FECIA 10 1G 2100 NJ30 N A Blank 2A 2113B ...

Page 39: ...cuit Breaker M FDS MAIN Fusible Disconnect Switch M LUG MAIN Line Lugs METER Metering Unit NCP Neutral Connection Plate NLD ControlNet to DeviceNet PLC Programmable Logic Controller DNPS DeviceNet Power Supply RVAT Reduced Voltage Autotransformer SMC Solid State Motor Controller SPD Surge Protection Device TERM Terminal Unit TS1W R Two Speed One Winding Reversing TS2W R Two Speed Two Winding Rever...

Page 40: ...l Center Layout Worksheet MCC Name Number ___________________________________________________________ Unit Location Unit Data Catalog Number Wiring Diagram Size or Ampere Rating Description Full Load Current Horsepower Overload or Heater Elements Kilowatts Circuit Breaker Trip Setting Power Fuse Rating ...

Page 41: ...e Energizing 3 11 Table 3 F Megger Reading Recording Table MCC Name Number ___________________________________________________________ Date Circuit Unit Name Number Phase to Phase Phase to Ground Phase to Neutral A B B C C A A Grd B Grd C Grd A Neut B Neut C Neut ...

Page 42: ...Publication 2100 IN012B EN P April 2005 3 12 Final Checklist Before Energizing ...

Page 43: ...izontal ground bus 1 For approximate section base dimensions and ground bus locations refer to Chapter 2 Installation Procedures Figure 2 2 through Figure 2 6 or elevation drawings shipped with MCC 2 For approximate bottom entry locations and wiring schemes for main fusible disconnects main circuit breakers and incoming line compartments refer to publication 2100 4 2 Mains and Incoming Lines Dimen...

Page 44: ...This will help prevent cable insulation from cracking or splitting Motor control centers are rated for use with 167 F 75 C cable Cable must be sized using 167 F 75 C column in NEC Table 310 16 NEC 2005 Edition The temperature rating of the lugs is not relevant Lugs Verify the compatibility of wire size type and stranding versus the power lugs furnished Use correct lugs in all applications Crimp co...

Page 45: ...es the connection is reverse fed the bottom entry cables connect to the bottom of the main fusible disconnect or main circuit breaker For further information refer to publication 2100 4 2 Mains and Incoming Lines Dimension Reference Mechanical screw type lugs are supplied as standard with all main fusible disconnects or main circuit breakers Crimp or compression lugs are optional Cable Bracing The...

Page 46: ...hould be drawn up during wrapping so that individual cables are supported by the tape as a single mass Figure 4 1 Securing Cables with Glass Tape In Figure 4 2 cables are lashed in a figure 8 type configuration using nylon rope The rope lashing should be continuous from the point the cables enter the MCC to the point the cables are terminated Other types of rope lashing may be acceptable Cable sla...

Page 47: ...s should be small enough to provide a snug fit for the cables The connectors or lugs are attached to the cables and cables are bolted to the terminals When using the hardwood bracing method and the short circuit current is less then 42 000 amperes cables should be braced every 12 305mm When the short circuit current is 42 000 amperes or greater cables should be braced every 6 153mm Incoming Line B...

Page 48: ...Publication 2100 IN012B EN P April 2005 4 6 Installing Conduit and Cable ...

Page 49: ...cation 2400 IN007x EN P Installing Units with Horizontal Operating Handles Removing Plug In Unit with a Vertical Operating Handle from a Section Figure 5 1 Opening a Unit Door with a Vertical Operating Handle 1 Make sure disconnect handle is in the OFF O position 2 Turn door latches 1 4 turn 3 Open door completely ATTENTION Review your company safety lockout and tag out procedure De energize all u...

Page 50: ...unted devices and or wiring if necessary 2 Remove hinge pins by sliding upward with a flathead screwdriver NOTE The control station can be hung on front of the unit using square holes adjacent to top unit latch TIP It is not necessary to remove the unit door to remove a unit from a section However steps 1 and 2 below may still be necessary even when door is not removed ...

Page 51: ...ge the Captive Latches 1 Disengage captive latches located at front of unit one at top and one at bottom of the unit Units that are 2 0 space factor and larger have two latches at top 2 Detach front portion of pull apart terminal blocks from the unit base Place wires terminal blocks in line with wiring clearance tunnel 3 Remove other cables or devices that would prevent unit withdrawal Wiring Tunn...

Page 52: ... holds 5 Carefully install protective caps or close manual shutters after unit is removed Automatic shutters will close as units are removed Removing Plug In Unit with a Horizontal Operating Handle from a Section Figure 5 6 Opening the door of a unit with a Horizontal Operating Handle 1 Make sure the disconnect handle is in the OFF O position TIP It is not necessary to place wires terminal blocks ...

Page 53: ...or wiring if necessary 5 Remove hinge pins by sliding upward with a flathead screwdriver 6 Swing door to near closed position 7 Lift door outward to remove Figure 5 8 Unit with a Horizontal Operating Handle with Control Station Removed 8 Detach wiring terminal block from unit 9 Place wiring terminal block in vertical wireway to right of unit TIP It not necessary to remove the unit door in order to...

Page 54: ... the disconnect handle flange as finger hold 12 Carefully install protective caps or close manual shutters after unit is removed See Figure 5 11 Automatic shutters will close as units are removed Removing Support Pan Figure 5 10 Removing the Unit Support Pan 1 Pry the plastic retaining clip from the right hand unit support using a screwdriver This is visible in the vertical wireway 2 Lift the righ...

Page 55: ...ear slot on structure 4 Push back on left side of support pan until support pan is free from structure NOTE Vertical sections may be supplied with plug in stab opening protective caps manual shutters or automatic shutters Refer to Step 5 if any of these options are supplied 5 Carefully install protective caps or close manual shutters after unit is removed Automatic shutters will close as units are...

Page 56: ...Publication 2100 IN012B EN P April 2005 5 8 Installing and Removing Plug In Units ...

Page 57: ...ance while energized shall be field marked to warn qualified persons of potential electric arc flash hazards The marking shall be located so as to be clearly visible to qualified persons before examination adjustment servicing or maintenance of the equipment FPN No 1 NFPA 70E 2000 Electrical Safety Requirements for Employee Workplaces provides assistance in determining severity of potential exposu...

Page 58: ... level of the on site personnel safety training The level of required clothing and required PPE Consistency for the level of marking of various equipment e g switchboards panelboards industrial control panels motor control centers etc The available flash energy on each piece of equipment This energy is determined from available fault current arc flash duration due to the type and degree of short c...

Page 59: ...on a defeater screw must be deliberately operated to open the unit door i e open the door of an energized unit The defeater screw is located just below on units with a vertically mounted operator handle or just to the right on units with a horizontally mounted operator handle of the pivot point of the operator handle To operate the defeater mechanism and defeat the door interlock while the operato...

Page 60: ...perator Handle and Unit Interlock Figure 7 1 Operating Handle Defeater for Vertical Operator Handle Figure 7 2 Operating Handle Defeater for Horizontal Operator Handle ATTENTION Follow NFPA 70E safety guidelines when working on energized equipment ...

Page 61: ...e operator handle is in the OFF O position the defeater lever must be deliberately lifted on vertical handles or pushed to the left for horizontal handles to move the operator handle to the ON I position and energize the unit See Figure 7 3 and Figure 7 4 Figure 7 3 Defeater Lever for Vertical Operator Handle ATTENTION Follow NFPA 70E safety guidelines when working on energized equipment ...

Page 62: ...o lock the small medium and large operator handle in the OFF O position put the shackle of the lock through the opening in the operator handle assembly The opening can accommodate up to three 3 padlocks See Figure 7 5 Figure 7 5 Locking Vertical Handles in OFF O Position ATTENTION Follow NFPA 70E for proper lockout tagout guidelines when working on energized equipment Small and Medium Vertical Han...

Page 63: ...rator handle in the ON I position drill out the pre located hole to 3 8 9 5mm diameter maximum and insert the shackle of the lock The following instructions assume that the handle is in the ON I position Units with small handles the pre located hole is in the upper portion of the operator handle assembly Units with medium and large operator handles the pre located hole is underneath the operator h...

Page 64: ... 2100 IN012B EN P April 2005 7 6 Operator Handle and Unit Interlock Figure 7 7 Locking Small Handle in ON I POSITION Vertical Operating Handle Figure 7 8 Locking Medium Handle in ON I Position Drill Out Drill Out ...

Page 65: ...h each plug in unit Unit interlocks prevent units from being removed from or inserted into a vertical section when the operator handle is in the ON I position Units can also be locked out with a padlock preventing installation of the unit into a vertical section The lockout feature of the unit interlock can be used with the operator handle in the ON I or OFF O position See Figure 7 11 and Figure 7...

Page 66: ...100 IN012B EN P April 2005 7 8 Operator Handle and Unit Interlock Figure 7 11 Unit Interlock to prevent insertion Vertical Operating Handler Figure 7 12 Unit Interlock to prevent insertion Unit Completely Withdrawn ...

Page 67: ...100 IN012B EN P April 2005 Operator Handle and Unit Interlock 7 9 Figure 7 13 Unit Interlock to prevent insertion Horizontal Operating Handle Figure 7 14 Unit Interlock to prevent insertion Unit Completely Withdrawn ...

Page 68: ...Publication 2100 IN012B EN P April 2005 7 10 Operator Handle and Unit Interlock ...

Page 69: ...ices followed by the feeder devices and the branch circuit devices Always energize from the source of the system working toward the loads ATTENTION This procedure is provided as a general guidance for energizing a newly installed CENTERLINE Motor Control Center and should be used after the Final Check procedure has been completed see Chapter 3 Final Checklist Before Energizing ATTENTION Energizing...

Page 70: ...e motors be jogged or inched temporarily disconnect the power factor correction capacitors For more information on power factor capacitors and MCC units see publication 2100 AT001x EN P Power Factor Correction Capacitors for Bulletin 2100 Motor Control Center Starter Units b Verify that any acceleration times are within application specifications NOTE Excessive starting currents and or acceleratio...

Page 71: ...e any source of moisture Seal off conduit cracks and openings that have allowed and or could allow moisture to enter the MCC enclosure Dry or replace and clean insulating material that is damp or wet or shows signs of moisture Check devices such as contactors circuit breakers disconnect switches relays pushbuttons etc for wetness or signs of moisture corrosion or contamination Replace damaged or m...

Page 72: ...reased temperature of the contact point leading to failure Replace bus stabs if wear or corrosion is excessive Lubricate bus stabs with NO OX ID grease catalog number 2100H N18 or 2100H N18T before installing the unit into the section 8 Inspect current carrying parts such as fuse clips knife blades of disconnects and line and load terminals of devices for discoloration corrosion or other signs of ...

Page 73: ...uld lead to equipment malfunction or failure Replace any damaged parts or wiring 12 Check contactor and relay coils for evidence of overheating such as cracking melting or burning of insulation If there is evidence of overheating the coil must be replaced When replacing a coil check and correct the overvoltage or undervoltage conditions that may have caused the coil failure Be sure to clean any re...

Page 74: ...on and is housed in a frame mounted unit turn off the power source s to the motor control center so the switch can be lubricated NOTE Save all parts for reinstallation 2 Remove the line guard from the disconnect 3 For access to the disconnect s stationary contacts remove the arc hood ATTENTION Follow NFPA 70E safety guidelines when working on energized equipment To prevent injury or death to perso...

Page 75: ...ed in a plug in unit reinstall the unit For installation of unit refer to publication 2100 IN014x EN P Installing Units with Vertical Operating Handles NOTE If the unit requires lubrication because of corrosion for example a sulfuric environment replacing the unit disconnect may be required to avoid overheating conditions Lubrication may temporarily resolve overheating however replacing the discon...

Page 76: ...Publication 2100 IN012B EN P April 2005 9 6 Maintenance ...

Page 77: ...gate the cause of the fault and inspect all equipment thoroughly per NEMA Standards Publication No ICS 2 3 1995 Instructions for the handling installation operator and maintenance of MCCs not rated more then 600 Volts Section 11 Maintenance after a Fault has Occurred Make necessary repairs to units components and structures as required prior to reenergizing the equipment Be sure that replacement p...

Page 78: ...Publication 2100 IN012B EN P April 2005 10 2 Maintenance After Fault Condition ...

Page 79: ...iderations etc 3 The total number of similar devices supplied as original equipment within the motor control center 4 Individual user policies governing spare parts Consideration should also be given to stocking complete units when the job site is in an area remote from a distributor or district sales office or when it is critical to maintain continuous operation of a system Order Information The ...

Page 80: ...Publication 2100 IN012B EN P April 2005 11 2 Renewal Parts ...

Page 81: ...l Wireway Door Vertical to Horizontal Bus Connection Access Cover Vertical Bus Support Cover Unit Support Pan Sealing Strap Top and Bottom Bottom Support Angle Bottom Horizontal Wireway Cover Left Hand Bottom End Closing Plate Horizontal Ground Bus Top or Bottom Left Hand Side Plate Assembly Vertical Plug in Ground Bus Left Hand Center End Plate Horizontal Power Bus Vertical Power Bus Horizontal a...

Page 82: ...Diagram Pocket Captive Latch Starter or Contactor ControlCircuit Fuses and Fuse Block Auxiliary Contacts Control Transformer Fusing and Fuse Block Control Circuit Transformer not shown PowerandControl Terminal Blocks Short Circuit Rating Label UL Label Captive Latch Control Station Pilot Devices Reset Button Unit Support Pan Plastic Retaining Pin Overload Handle Cutout Unit Door Defeater Mechanism...

Page 83: ...s Unit Support Pan Bushing Unit Support Pan Plastic Retaining Pin Unit Latch Interlock Pilot Devices Control Circuit Fuse block and Fuses Control Terminal Block Handle Mechanism Circuit Breaker shown or Fusible Disconnect Control Circuit Transformer Unit Stab Assembly Overload Relay Contactor or Starter Starter Unit Nameplate Unit Door Bulletin 2113 FVNR with transformer shown ...

Page 84: ...ng Unit Support Pan Plastic Retaining Pin Unit Latch Interlock Pilot Devices Control Circuit Fuse block and Fuses Control Terminal Block Handle Mechanism Circuit Breaker shown or Fusible Disconnect Control Circuit Transformer Unit Stab Assembly Overload Relay Contactor or Starter Auxiliary Contacts Unit Nameplate Unit Door Bulletin 2413 IEC Style Shown ...

Page 85: ...Publication 2100 IN012B EN P April 2005 Parts Illustrations 12 5 Notes ...

Page 86: ...Publication 2100 IN012B EN P April 2005 12 6 Parts Illustrations Notes ...

Page 87: ...th a hardware module within the first 24 hours of installation please review the information that s contained in this manual You can also contact a special Customer Support number for initial help in getting your module up and running New Product Satisfaction Return Rockwell tests all of our products to ensure that they are fully operational when shipped from the manufacturing facility However if ...

Page 88: ...www ab com mcc Publication 2100 IN012B EN P April 2005 Copyright 2005 Rockwell Automation Inc All rights reserved Printed in the U S A Supersedes Publication 2100 5 0 October 1995 ...

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