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Figure 23.
Types NR-NRV switches service parts.

12

Types NR, NRV Maintenance Instructions

SERVICE PARTS LIST

The service parts and hardware listed and illustrated include
only mose parts and assemblies usually fumished for repair or
involved in the maintenance procedures described in this manu-
al. Further breakdown of listed assemblies is not recommended.

Dimensions of all common hardware parts have been care-

fully checked so that they may be locally acquired. The suffix
letter of the 14 character catalog number of common hardware
parts code the plating of the part:

A - No plating; raw material
H - Silver
M - Black oxide
Q - C zinc + chromate
Y - Zinc + chromate
Z - Eiectro zinc + bronze irridite

A hardware kit, Catalog No. KAS49R1, contains an assort-

ment of roll pins, cotter pins, retaining rings, stop nuts, etc.—
common hardware parts used in Kyle switches that may not be
readily locally available.

To assure correct receipt of any part order, always include

switch type and serial number. Because of Cooper Power Sys-
tems’ continuous improvement policy, there may be instances
where the parts furnished may not look exactly the same as
the parts ordered. However, they will be completely inter-
changeable without any rework of the switch.

Summary of Contents for Kyle NR Series

Page 1: ...after Type NRV Serieal No 10500 and after Figure 2 Kyle Type NRV switch 89991KMA 89992KMA CONTENTS Safety Information 2 Introduction 2 General Description 2 Description of Operation 3 Ratings and Spec...

Page 2: ...ifting strap on the switch head casting Lift the load smoothly and do not allow the load to shift Improper lifting can result in equipment damage WARNING Do not operate this equipment out of oil Opera...

Page 3: ...ese functions A holding switch accessory installed in the actuator reduces to one second the minimum time the control must be ener gized to effect an opening or closing operation RATINGS AND SPECIFICA...

Page 4: ...w procedures in Shop Repair Procedures Contacts section NOTE The contacts should be replaced before the erosion of the load current transfer surfaces impairs their effectiveness 8 Manually close and t...

Page 5: ...tch is returned to service Therefore the switch should be filled with new oil or oil that has been restored to like new condition oil used in these switches conforms to ASTM Standard D3487 Type 2 its...

Page 6: ...ormal shop maintenance repair There fore if a bushing is in any way damaged the complete bushing assembly must be replaced Refer to Figure 8 and proceed as follows 1 Disconnect the appropriate bushing...

Page 7: ...mbly and contact roller from contact stud 3 Install contact roller within new contact assembly and mount on the contact stud Install following parts in order contact retainer flexible contact leads te...

Page 8: ...bed in Moving Contact Arm Assembly section Steps 1 and 2 2 Remove the hex nuts lockwashers and flatwashers that retain terminal leads to bushing rods 3 Remove four hex head machine screws with pre ass...

Page 9: ...e condition of the wiring motor and cams Components of a standard actuator mechanism are shown in Figure 16 Figure 17 shows the wiring diagram of the switch actuator with the various accessory connect...

Page 10: ...opening and clos ing operations to be sure switch adjustments hold 10 Types NR NRV Maintenance Instructions ACTUATOR ASSEMBLY REPLACEMENT To replace the actuator assembly proceed as follows 1 Pull ye...

Page 11: ...he bushings as described in Shop Repair Proce dures Bushings section NOTE This step is not mandatory but is suggested to simplify working on the head mechanism if a service rack is not available 3 Per...

Page 12: ...er of common hardware parts code the plating of the part A No plating raw material H Silver M Black oxide Q Cadmium zinc chromate Y Zinc chromate Z Eiectro zinc bronze irridite A hardware kit Catalog...

Page 13: ...ch lever pin KP3054A2 1 30 Pin retainer and spring anchor KP120NR 2 31 Machine screw rd hd with pre assembled split lockwasher 1 4 20 x 3 8 stl K831501125037Z 2 Type HR NRV Switches Service Parts Figu...

Page 14: ...Figure 24 Actuator and housing service parts 14 Types NR NRV Maintenance Instructions...

Page 15: ...olding and selector KA741NR3 1 Auxiliary SPDT KA745NR 1 8 Spacer KP324NR 1 9 Screw pan hd mach 10 24 x 1 1 2 sst K721715110150A 1 10 Terminal strip KP226NR 1 11 Screw self tapping phillips pan hd Type...

Page 16: ...KML 11 89 P O Box 2850 Pittsburgh WI 15230 1989 Cooper Industries Inc Kyle is a registered trademark of Cooper Industries Inc...

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