WAMTF Operator Adapter

Product Information

Operator Adapter WAMTF

The Operator Adapter WAMTF is a component used for the
installation of Westinghouse Type AMT Flex Shaft Handle Mechanisms
for Circuit Breakers. It is designed to provide proper fits and
clearances for the equipment being installed.

Parts List

Adapter Plate, Catalog Number WAMTF (Part No. 27206002) – 1
piece
Plate Gasket (Part No. 89109613) – 1 piece
Screw, 1/4-20X1/2 Pan Head (Part No. 99401031) – 4 pieces
Slide Arm (Part No. 26250001) – 1 piece
Shoulder Collar (Part No. 26149001) – 1 piece
Screw, 1/4-20X7/8 Hex Head (Part No. 99401030) – 1 piece
Lockwasher, 1/4 Spring (Part No. 99401318) – 1 piece
Washer, Flat (Part No. 22101003) – 2 pieces
Lockwasher, 1/4 Internal Teeth (Part No. 99401300) – 2
pieces
Nut, 1/4-20 Hex (Part No. 99401406) – 2 pieces
Interlock Blade (Part No. 26199002) – 1 piece
Screw, 10-32X3/8 Pan Head (Part No. 99401007) – 2 pieces
Lockwasher, #10 Internal Teeth (Part No. 99401307) – 2
pieces
Nylon Washer (Part No. 26132003) – 4 pieces
Installation Instructions (Part No. 89114654) – 1 piece

Product Usage Instructions

Introduction

This installation instruction is for Westinghouse and Flex Shaft
AMT cable mechanisms for circuit breakers, excluding F-Frame
circuit breakers. These mechanisms are designed for use with
disconnect switches and circuit breakers mounted in Hoffman
two-door, floor-mounted enclosures with the disconnect on the right
flange.

Installation Steps

Step 1:

Install the adapter plate (item 1) and plate gasket (item 2) on
the inside of the enclosure, behind the rectangular opening
provided. Attach the gasket side with PSA to the adapter plate.
Secure the plate and gasket in place using four screws (item 3) and
four nylon washers (item 14).

Step 2:

Assemble the Westinghouse AMTOP operating handle to the mounting
plate installed in step 1. Omit the cap screw and lockwasher that
fit into the bottom hole of the AMTOP operating handle.

Step 4:

Attach the bottom of the slide arm (item 4) to the offset arm of
the lock release mechanism. Use two flat washers (item 8), two
lockwashers (item 9), and two hex nuts (item 10). Do not tighten
these parts until adjustments are made (see step 5B).

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OPERATOR ADAPTER WAMTF
Installation Instructions for Westinghouse Type AMT Flex Shaft Handle Mechanisms for Circuit Breakers (For parts list, see Page 2)
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Rev. B

PH 763 422 2211 · nVent.com/HOFFMAN

P/N 89114654

89115495

The functions, fits and clearances of the installation described hereon are calculated from information supplied by the manufacturers of the equipment to be installed. Be certain to check the function, fits and clearances of all equipment both before and after installation to assure that it operates properly and safely and meets all applicable codes, standards and regulations.
In the event the completed installation does not function properly or fails to meet any such codes, standards or regulations, do not attempt to make alterations or operate the equipment. Report such facts immediately to:
Hoffman Customer Service 2100 Hoffman Way Anoka, MN 55303 763.422.2211
http://hoffman.nvent.com/contact-us

Parts List
Operator Adapter, Catalog Number WAMTF, Westinghouse Type AMT Below-Handle Mechanisms and Flex Shaft Mechanisms

Item No. Description

Part No.

Qty.

ADAPTER PLATE, WEST AMT.

27206002

PLATE GASKET

89109613

SCREW, 1/4-20X1/2 PAN HEAD

99401031

SLIDE ARM

26250001

SHOULDER COLLAR

26149001

SCREW, 1/4-20X7/8 HEX HEAD

99401030

LOCKWASHER, 1/4 SPRING

99401318

WASHER, FLAT

22101003

LOCKWASHER, 1/4 INTERNAL TEETH

99401300

NUT, 1/4-20 HEX

99401406

INTERLOCK BLADE

26199002

SCREW, 10-32X3/8 PAN HEAD

99401007

LOCKWASHER, #10 INTERNAL TEETH

99401307

NYLON WASHER

26132003

INSTALLATION INSTRUCTIONS

89114654

Notes:

1. Adapter plate to be used for all Flex Shaft cable mechanisms.

2. Use slide arm (item 4) for all AMT Flex Shaft cable mechanisms and AMT Flex Shaft cable mechanisms. Use slide arm (item 14) only for AMT Flex Shaft mechanisms for circuit breakers except for F Frame circuit breakers.

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PH 763 422 2211 · nVent.com/HOFFMAN

89115495

INTRODUCTION
This installation instruction is for Westinghouse and Flex Shaft AMT cable mechanisms for circuit breakers except for F-Frame circuit breakers. These mechanisms are for disconnect switches and circuit breakers mounted in Hoffman two door, floor- mounted, enclosures with the disconnect on the right flange.
INSTALLATION STEPS
Step 1 Install adapter plate (item 1) and plate gasket (item 2) on the inside of the enclosure, behind the rectangular opening provided. Gasket side with PSA should be attached to adapter plate. Secure in place with four screws (item 3) and four nylon washers (item 14).
Step 2 Assemble the Westinghouse “AMTOP” operating handle to the mounting plate which was installed in the enclosure in step 1. Omit cap screw and lockwasher which fits into bottom hole of “AMTOP” operating handle.
Step 3 Install the slide arm (item 4) over the projecting part of the “AMTOP” operating handle as shown. Note that bottom holes in slide arm are not on center of slide arm. Place the smaller diameter end of the shoulder ollar (item 5) through the oval slot in the slide arm. Install long cap screw (item 6) with lockwasher (item 7) hrough shoulder collar into the bottom mounting hole of the “AMTOP” operating handle and tighten. The slide arm should move up and down smoothly. Install interlock lever extension per Westinghouse instructions.
Step 4 Attach the bottom of the slide arm (item 4) to the offset arm of the lock release mechanism. Use two flat washers (item 8), two lockwashers (item 9), and two hex nuts (item 10). Do not tighten until parts are adjusted (see step 5B)
Step 5 The handle safety lock release mechanism is adjustable in two places.
A) Check the adjustment of the factory installed roller bracket. The door latch should hit against the latch stop portion of the roller bracket when the door is closed and latched. Adjust up or down if necessary. The attached mechanism will then provide the necessary up-down motion required to operate the release mechanism in the “AMTOP” operating handle.
B) Adjust the length of the slide arm assembly. With proper adjustment of the slide arm, the safety lock (in “AMTOP” operating handle) should release just before the master door is fully latched. Lengthen slide arm if safety lock releases too soon. Shorten slide arm if safety lock releases too late.
Step 6 Attach the cover interblock blade (item 11), provided by Hoffman, to the tapped spacer on the door using the bottom set of mounting holes. Used the two screws (item 12) and lockwashers (item 13). The cover interlock blade prevents the door from being opened when the “AMTOP” operating handle is in the “ON” position. This blade may be adjusted up or down to hook properly on the interlock lever extension. The blade (item 11) must be positioned so the bottom edge of blade clears the interlock lever extension by 1/4 inch when “AMTOP” operating handle is in extreme “OFF” position.
Step 7 Drill and tap holes in panel for disconnect required per Westinghouse instructions. See Westinghouse instructions for location and size of mounting holes.
Step 8 Install panel in enclosure.
Step 9 Mount disconnect switch or circuit breaker on panel using Westinghouse instructions and parts.

89115495

PH 763 422 2211 · nVent.com/HOFFMAN

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For Two-Door, Floor-Mounted Enclosures with Disconnect on Right Flange

678’6)253,927 $66(0%/<

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(;7(16,21

OFFSET ARM
LOCK RELEASE MECHANISM

LOCATE SLIDE ARM SO HOLES ARE CLOSER TO THIS SIDE
ROLLER BRACKET
ROLLER BRACKET LATCH STOP

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PH 763 422 2211 · nVent.com/HOFFMAN

89115495

INTRODUCTION
This installation instruction is for Westinghouse Flex Shaft AMT cable mechanisms for circuit breakers, except for F-Frame circuit breakers. These mechanisms are for disconnect switches and circuit breakers mounted in Hoffman one through six door, free-standing, enclosures with the disconnect on the right flange.

INSTALLATION STEPS
Step 1 Install adapter plate (item 1) and plate gasket (item 2) on the inside of the enclosure, behind the rectangular opening provided. Gasket side with PSA should be attached to the adapter plate. Secure in place with four screws (item 3) and four nylon washers (item 14).

Step 2 Assemble the Westinghouse “AMTOP” operating handle to the mounting plate which was installed in the enclosure in step 1. Omit cap screw and lockwasher which fits into bottom hole of “AMTOP” operating handle.

Step 3 Install the slide arm (item 4) over the projecting part of the “AMTOP” operating handle as shown. Note that bottom holes in slide arm are not on center of slide arm. Place the smaller diameter end of the shoulder collar (item 5) through the oval slot in the slide arm. Install long cap screw (item 6) with lockwasher (item 7) through shoulder collar into the bottom mounting hole of the “AMTOP” operating handle and tighten. The slide arm should move up and down smoothly. Install interlock lever extension per Westinghouse instructions.

Step 4
Attach the bottom of the slide arm (item 4) to the offset arm of the lock release mechanism. Use two flat washers (item 8), two lockwashers (item 9), and two hex nuts (item 10). Do not tighten until parts are adjusted (see step 5B)

Step 5 The handle safety lock release mechanism is adjustable in two places.
A) Check the adjustment of the factory installed roller bracket. The door latch should hit against the latch stop portion of the roller bracket when the door is closed and latched. Adjust up or down if necessary. The attached mechanism will then provide the necessary up-down motion required to operate the release mechanism in the “AMTOP” operating handle.
B) Adjust the length of the slide arm assembly. With proper adjustment of the slide arm, the safety lock (in “AMTOP” operating handle) should release just before the master door is fully latched. Lengthen slide arm if safety lock releases too soon. Shorten slide arm if safety lock releases too late.

Step 6 Attach the cover interblock blade (item 11), provided by Hoffman, to the tapped spacer on the door using the bottom set of mounting holes. Used the two screws (item 12) and lockwashers (item 13). The cover interlock blade prevents the door from being opened when the “AMTOP” operating handle is in the “ON” position. This blade may be adjusted up or down to hook properly on the interlock lever extension. The blade (item 11) must be positioned so the bottom edge of blade clears the interlock lever extension by 1/4 inch when “AMTOP” operating handle is in extreme “OFF” position.

Step 7 Drill and tap holes in panel for disconnect required per Westinghouse instructions. See Westinghouse instructions for location and size of mounting holes.

Step 8 Install panel in enclosure.

Step 9 Mount disconnect switch or circuit breaker on panel using Westinghouse instructions and parts.

89115495

PH 763 422 2211 · nVent.com/HOFFMAN

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For One- Through Six-Door Free-Standing Enclosures with Disconnect on Right Flange

678’6)253,927 $66(0%/<

,17(5/2&./(9(5 ,17(5/2&./(9(5
(;7(16,21

OFFSET ARM

LOCATE SLIDE ARM SO HOLES ARE CLOSER TO THIS SIDE

– 6 –

PH 763 422 2211 · nVent.com/HOFFMAN

89115495

INTRODUCTION
This installation instruction is for Westinghouse Flex Shaft AMT cable mechanisms for circuit breakers, except for F Frame circuit breakers. These mechanisms are for disconnect switches and circuit breakers mounted in Hoffman two door, floor-mounted, enclosures with the disconnect on the centerpost.
INSTALLATION STEPS
Step 1 Install adapter plate (item 1) and plate gasket (item 2) on the inside of the enclosure, behind the rectangular opening provided. Gasekt side with PSA should be attached to the adapter plate. Secure in place with four screws (item 3) and four nylon washers (item 14).
Step 2 Assemble the Westinghouse “AMTOP” operating handle to the mounting plate which was installed in the enclosure in step 1. Omit cap screw and lockwasher which fits into bottom hole of “AMTOP” operating handle.
Step 3 Cut 2 1/2 inches off bottom end of slide arm (item 4). Bottom end of slide arm has rectangular holes only.
Step 4 Install the slide arm (item 4) over the projecting part of the “AMTOP” operating handle as shown. Note that bottom holes in slide arm are not on center of slide arm. Place the smaller diameter end of the shoulder collar (item 5) through the oval slot in the slide arm. Install long cap screw (item 6) with lockwasher (item 7) through shoulder collar into the bottom mounting hole of the “AMTOP” operating handle and tighten. The slide arm should move up and down smoothly. Install interlock lever extension per Westinghouse instructions.
Step 5 Attach the bottom of the slide arm (item 4) to the offset arm of the lock release mechanism. Use two flat washers (item 8), two lockwashers (item 9), and two hex nuts (item 10). Do not tighten until parts are adjusted.
Step 6 Adjust the length of the slide arm assembly. With proper adjustment of the slide arm, the safety lock (in “AMTOP” operating handle) should release just before the master door is fully latched. Lengthen slide arm if safety lock releases too soon. shorten slide arm if safety lock releases too late.
Step 7 Attach the cover interblock blade (item 11), provided by Hoffman, to the tapped spacer on the door using the bottom set of mounting holes. Used the two screws (item 12) and lockwashers (item 13). The cover interlock blade prevents the door from being opened when the “AMTOP” operating handle is in the “ON” position. This blade may be adjusted up or down to hook properly on the interlock lever extension. The blade (item 11) must be positioned so the bottom edge of blade clears the interlock lever extension by 1/4 inch when “AMTOP” operating handle is in extreme “OFF” position.
Step 8 Drill and tap holes in panel for disconnect required per Westinghouse instructions. See Westinghouse instructions for location and size of mounting holes.
Step 9 Install panel in enclosure.
Step 10 Mount disconnect switch or circuit breaker on panel using Westinghouse instructions and parts.

89115495

PH 763 422 2211 · nVent.com/HOFFMAN

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For Two-Door, Floor-Mounted Enclosures with Disconnect on Centerpost

678’6)253,927 $66(0%/<

,17(5/2&./(9(5 ,17(5/2&./(9(5
(;7(16,21

OFFSET ARM

LOCATE SLIDE ARM SO HOLES ARE CLOSER TO THIS SIDE

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PH 763 422 2211 · nVent.com/HOFFMAN

89115495