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Application Note

AP040079EN

Effective July 2014

IT Starter Repair – HVX Intellipass Drives

Introduction

This guide is to assist with the separation and replacement of one contactor section on
the IT series reversing starter assemblies.  The repair of the assembly may be required
due to burnt sections of a contacor, or a contactor coil not pulling in and sealing.  The
guide is only used to repair the assembly with an operational electronic overload.  This
guide includes frame size/series B/E501B, C/E501C, D/E501D, and E/E501E.

E501B and E501C Assemblies

1. If the starter/contactor is mounted to a plate remove the plate by removing the 2

screws on the bottom side (see Figure 1-1).

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Summary of Contents for E501B

Page 1: ...he repair of the assembly may be required due to burnt sections of a contacor or a contactor coil not pulling in and sealing The guide is only used to repair the assembly with an operational electronic overload This guide includes frame size series B E501B C E501C D E501D and E E501E E501B and E501C Assemblies 1 If the starter contactor is mounted to a plate remove the plate by removing the 2 scre...

Page 2: ...om the contactor see Figure 1 2 Carefully pull up on each cover and un seat from the contactor see Figure 1 2a 3 Turn out all 6 Allen hex head lugs screws all the way and then turn back in 1 5 turns to keep the lugs screws from falling out See Table 1 2 Figure 1 3 For B Frame use 2 5mm For C Frame use 3mm ...

Page 3: ...p and remove the left side of the overload section see Figure 1 4 and Figure 1 4a a NOTE Be careful not to lose the small spring located at the foot of the right side contactor see Figure 1 5 5 Carefully separate each half of the contactors from the interlock The interlock is clipped into each contactor on the 4 corners of the interlock See Figure 1 6 and 1 6a ...

Page 4: ...st side use one of two methods a Method A Press down firmly onto the contactor to engage it fully and in sure the interlock pin is down on the side you are inserting Carefully in sert and snap the interlock onto the contactor see Figure 1 7 b Method B Leave contactor in the up disengaged state Place the interlock pin in the up position on the side you are to insert into the contactor To hold it in...

Page 5: ...eep the interlock from changing positions see Figure 1 8a Carefully line up the interlock pin and the clips on the interlock with the other contactor and snap the two together 10 Test Interlock Functionality Only one side will engage at a time and it shall en gage fully Press and hold one contactor side down and the opposite contactor should not go down when pressed Reverse to test the other conta...

Page 6: ...he buss pins into the contactor terminals and then gently press down until the locking clip on the upper left snaps into place see Figure 1 10 Before installing the right side of the overload check for the little spring again and ensure it is installed see Figure 1 10b Install the electronic overload see Figure 1 10a ...

Page 7: ...he lug screws onto the overload assembly see Figure 1 11 For specific torque specifications refer to the cut sheet included with the new contactor and reference to the line and load side torque specifications or see Table 1 1 ...

Page 8: ...e cover screws see Figure 1 12 If a plate was used re install the plate and secure with the two screws that were removed see Figure 1 12a There are multiple holes on the plate but only 2 of them will line up with the contactor assembly ...

Page 9: ... by removing the 4 screws on the bottom side see Figure 2 1 and Figure 2 1a 2 Remove the contactor covers by turning out the 4 cover screws 2 per cover until they are fully released from the contactor Carefully pull up on each cover and un seat from the contactor see Figure 2 2 and Figure 2 2a ...

Page 10: ... screws from falling out see Figure 2 3 For D Frame use 4mm For E Frame use 8mm 4 Pull up on the electronic overload right side of the overload section and remove Gently pull back the locking clip on top of the bus bar block and then lift up and remove the left side of the overload section see Figure 2 4 ...

Page 11: ...he small spring located at the foot of the right side contactor see Figure 2 5 5 Carefully separate each half of the contactors from the interlock The interlock is clipped into each contactor on the 4 corners of the interlock see Figure 2 6 ...

Page 12: ...up position on the side you are to insert into the contactor To hold it in that position use your thumb or fin ger to hold the opposite side interlock pin down this will engage the interlock from changing positions Carefully insert and snap the interlock onto the contac tor see Figure 2 7 9 To connect the other contactor to the installed interlock move the exposed inter lock pin to the up position...

Page 13: ...engage at a time and it shall en gage fully Press and hold one contactor side down and the opposite contactor should not go down when pressed Reverse to test the other contactor see Fig ure 2 9 11 Re install the remainder components in the reverse order ...

Page 14: ... terminals and then firmly press down until the locking clip on the upper left snaps into place see Figure 2 10 and Figure 2 10a 13 Before installing the right side of the overload check for the little spring again and insure it is installed see Figure 2 11 Install the electronic overload ...

Page 15: ...d with the new contactor and reference to the line and load side torque specifications or see Table 2 1 see Figure 2 12 15 Re install the covers and secure the cover screws see Figure 2 2 and Figure 2 2a If a plate was used re install the plate and secure with the two screws that were removed see Figure 2 1 and Figure 2 1a ...

Page 16: ...n 6 Option 1 Technical Sales Please contact your local sales representative or call the pre sale engineering support by email VFDPresale Eaton com or by phone 1 877 386 2273 Option 2 Option 6 Option 1 All other supporting documentation is located on the Eaton web site at www eaton com Drives Eaton 1000 Eaton Boulevard Cleveland OH 44122 USA Eaton com 2014 Eaton All Rights Reserved Printed in USA P...

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