Hoffman 99401960 Instruction

Below you will find brief information for A21ABVA. This document provides instructions for installing the operator adapter for Allen-Bradley Bulletin 1494V, 1494C, 140G and 140U disconnects. It covers mounting the adapter on floor-mounted and free-standing enclosures with the disconnect on the right flange or centerpost. The manual includes detailed steps for both small and large handle installations, along with instructions for adjusting the safety lock release and door catch mechanisms.

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OPERATOR ADAPTER A21ABVA
Installation Instructions for Allen-Bradley Bulletin 1494V (variable depth),
1494C, 140G and 140U Cable Controlled
For floor-mounted enclosures with
disconnect on the right flange
Master
Door
For one through six door free-standing enclosures
with the disconnect on the right flange
Master
Door
For floor-mounted enclosures with the
disconnect on the centerpost
Master
Door
Rev. H
&copy; 2018 Hoffman Enclosures Inc.
PH 763 422 2211 • nVent.com/HOFFMAN
P/N 99401960
87569091
The functions, fits, and clearances of the installation described hereon are calculated from information
supplied by the manufactures 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 A21ABVA, for Allen-Bradley Bulletins 1494V, 1494C, 140G and 140U Disconnects
PARTS LIST
-2-
Item No.
Part Name
Part Number
Quantity
1
Adapter Plate, Small
87951268
1
2
Plate Gasket
26216011
1
3
Screw, 1/4-20x1/2 Pan Head
99401031
4
4
Slide Arm, Flat
26250001
1
5
Shoulder Collar, 5/8 Diameter
26149001
1
6
Screw, 1/4-20x7/8 Hex Head
99401030
1
7
Lock washer,1/4 Spring
99401318
1
8
Washer, Flat
22101003
2
9
Lock washer,1/4 Internal Teeth
99401300
2
10
Nut, Hex 1/4-20
99401406
2
11
Door Catch
23101002
1
12
Screw, 10-32x3/8 Pan Head
99401007
2
13
Lock washer, #10 Internal Teeth
99401307
2
14
Label, (Ectra)
26147001
1
15
Adapter Plate, Large
87932136
1
16
Slide Arm Assembly
27111002
1
17
Shoulder Collar, 3/4 Diameter
27112001
1
18
Screw, 5/16-18x1 Hex Head
99401081
1
19
Installation Instructions
99401960
1
&copy; 2018 Hoffman Enclosures Inc.
PH 763 422 2211 • nVent.com/HOFFMAN
87569091
INTRODUCTION
This installation instruction is for the Allen−Bradley Small Handle.
Bulletin 1494V (variable depth), 1494C and 140U (cable control) mechanisms.
These mechanisms are for disconnect switches and circuit breakers mounted in Hoffman two door, floor−mounted with cutout on
right hand flange or centerpost and one through six door, free−standing enclosures with the disconnect on the right flange
ALLEN-BRADLEY SMALL HANDLE INSTALLATION STEPS
See Figure 1 for 1494V or Figure 2 for 1494C, 140G and 140U Mounting.
Step 1 − Install adapter plate (item 1) and plate gasket (item 2) on the inside of the enclosure, behind the rectangular opening
provided. Secure in place with four screws (item 3).
Step 2 − Install Small Handle.
(1494V) Assemble the Allen-Bradley 1494F-M1, 1494F-P1 or 1494F-S1 operating handle and Allen−Bradley spring bracket to the
mounting plate which was installed in the enclosure in Step 1. Omit cap screw and lockwasher which fit into bottom hole of Allen−
Bradley operating handle.
(1494C) Assemble the Allen−Bradley 1494C CM and CMX operating mechanism and small handle to the mounting plate which
was installed in the enclosure in Step 1. Omit cap screw and lockwasher which fit into bottom hole of Allen−Bradley operating
handle.
(140G) Assemble the A-B 140G H, I, J, or K operating mechanism and small handle to the mounting plate which was installed in
the enclosure in Step 1. Omit cap screw and lockwasher which fit into bottom hole of Allen−Bradley operating handle.
(140U) Assemble the A-B 140U H, J, K, M, or N operating mechanism and small handle to the mounting plate which was installed
in the enclosure in Step 1. Omit cap screw and lockwasher which fit into bottom hole of Allen−Bradley operating handle.
Step 3 − Install Slide Arm.
Note: When mounting to centerpost, cut 2.50 inches off bottom of slide arm (item 4). Bottom of slide arm has three rectangular
slots.
(A) For 1494V install the slide arm (item 4) through the hole in bottom of Allen−Bradley spring bracket and over the defeater part
of the Allen−Bradley operating handle as shown.
(A) For the 1494C and 140U install the slide arm (item 4) over the defeater part of the Allen−Bradley operating handle as shown.
(B) Note that the notch in the slide arm is positioned toward the door opening. 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 Allen−Bradley operating handle and tighten. The slide arm should move up and down
smoothly. Install Allen−Bradley defeater bracket per Allen−Bradley instructions.
Step 4 − Attach the bottom of the slide arm (item 4) to the offset arm of the operator 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 operator 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 portion of the roller
bracket when the door is closed and latched. Adjust up or down if necessary. The mechanism will then provide the necessary up−
down motion required to operate the safety lock release in the Allen−Bradley operating handle.
(B) Adjust the length of the slide arm assembly with proper adjustment of the slide arm. The safety lock (in the Allen−Bradley
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 door catch (item 11) provided by Hoffman to the tapped spacer on the door using the bottom set of mounting
holes. Use two screws (item 12) and two lockwashers (item 13). The door catch prevents the door from being opened when
the Allen−Bradley operating handle is in the “ON” position. The door catch may be adjusted up or down to hook properly on the
defeater bracket. The door catch (item 11) must be positioned so it just clears the top of the defeater bracket when the Allen−
Bradley operating handle is in extreme “OFF” position (handle pushed down against the handle housing surface).
-3-
&copy; 2018 Hoffman Enclosures Inc.
PH 763 422 2211 • nVent.com/HOFFMAN
87569091
Small Handle Instructions
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&copy; 2018 Hoffman Enclosures Inc.
PH 763 422 2211 • nVent.com/HOFFMAN
87569091
Small Handle Instructions
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&copy; 2018 Hoffman Enclosures Inc.
PH 763 422 2211 • nVent.com/HOFFMAN
87569091
INTRODUCTION
This installation instruction is for the Allen−Bradley Large Handle.
Bulletin 1494V (variable depth) and 1494C (cable control) mechanisms.
These mechanisms are for disconnect switches and circuit breakers mounted in Hoffman two door, floor−mounted with cutout on
right hand flange or centerpost and one through six door, free−standing enclosures with the disconnect on the right flange
ALLEN-BRADLEY LARGE HANDLE INSTALLATION STEPS
See Figure 3 for 1494V or Figure 4 for 1494C and 140G Mounting.
Step 1 − Install adapter plate (item 15) and plate gasket (item 2) on the inside of the enclosure behind the rectangular opening
provided. Secure in place with four screws (item 3).
Step 2 − Install Large Handle
(1494V) Assemble the Allen−Bradley 1494F-M2 or 1494F-S2 operating mechanism and large handle to the adapter plate which
was installed in Step 1. Omit cap screw and lock washer which fit into bottom hole of Allen−Bradley operating handle.
(140G) Assemble the Allen−Bradley 140G, M and N operating mechanism and large handle to the adapter plate which was
installed in Step 1. Omit cap screw and lockwasher which fit into bottom hole of Allen−Bradley operating handle.
Step 3 − Install Slide Arm and Defeater Bracket
(1494V) Install slide arm (item 16) through the hole in bottom of Allen−Bradley spring bracket. Put Allen−Bradley defeater bracket
through slot in the end of the slide arm and mount per Allen−Bradley instructions. Place the smaller diameter end of 3/4 diameter
shoulder collar (item 17) through oval slot in slide arm. Install longer cap screw (item 18) with lockwasher through shoulder collar
into bottom mounting hole of Allen−Bradley operating handle and tighten. The slide arm should move up and down smoothly.
(1494C and 140G) Put Allen−Bradley defeater bracket through slide arm (item 16) end slot and mount defeater bracket per Allen−
Bradley instructions. Place the smaller diameter end of 3/4 diameter shoulder collar (item 17) through oval slot in slide arm. Install
longer cap screw (item 18) with lockwasher through shoulder collar into bottom mounting hole of Allen−Bradley operating handle
and tighten. The slide arm should move up and down smoothly.
Step 4 − Attach the bottom of the slide arm assembly (item 16) to the offset arm of the operator 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 operator 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 portion of the roller
bracket when the door is closed and latched. Adjust up or down if necessary. The mechanism will then provide the necessary up−
down motion required to operate the safety lock release in the Allen−Bradley operating handle.
(B) Adjust the length of the slide arm assembly with proper adjustment of the slide arm. The safety lock (in Allen−Bradley
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 door catch (item 11) provided by Hoffman to the tapped spacer on the door using the bottom set of mounting
holes. Use two screws (item 12) and two lockwashers (item 13). The door catch prevents the door from being opened when
the Allen−Bradley operating handle is in the “ON” position. The door catch may be adjusted up or down to hook properly on the
defeater bracket. The door catch (item 11) must be positioned so it just clears the top of the defeater bracket when the Allen−
Bradley operating handle is in extreme “OFF” position (handle pushed down against the handle housing surface).
-6-
&copy; 2018 Hoffman Enclosures Inc.
PH 763 422 2211 • nVent.com/HOFFMAN
87569091
Large Handle Instructions
-7-
&copy; 2018 Hoffman Enclosures Inc.
PH 763 422 2211 • nVent.com/HOFFMAN
87569091
Large Handle Instructions
-8-
&copy; 2018 Hoffman Enclosures Inc.
PH 763 422 2211 • nVent.com/HOFFMAN
87569091
Right Hand Flange Disconnect
Sub-Panel Instructions
Step 1 - Drill and tap holes in panel PER ALLEN-BRADLEY INSTRUCTIONS.
Step 2 - Install panel in enclosure.
Step 3 - Mount disconnect switch or circuit breaker on panel using Allen-Bradley instructions and parts.
For variable depth disconnects, find the enclosure depth dimension. See Allen−Bradley instructions to cut
the connecting rod to length required and install and adjust Allen−Bradley connecting rod per Allen−Bradley instructions.
Enclosure
Height Depth
A21
60.12
72.12
A28
1&amp;2
Door
A28
3-6
Door
A34
72.12
84.12
90.12
72.12
84.12
90.12
72.12
84.12
Small Handle
D
E
F
G
12.12
18.12
24.12
3.00
2.06
2.44
1.53
18.12
20.12
24.12
3.00
4.06
2.44
1.53
1,2
H
7.88
13.88
J
1.47
11.88
18.12
24.12
3.50
18.12
24.12
3.00
4.06
2.90
1.53
17.88
2.44
1.53
K
5.82
11.82
L
G
0.97
1.70
0.97
1.70
7.82
1.47
13.82
H
6.45
12.45
J
1.31
10.45
16.45
K
4.39
10.39
12.39
16.82
19.45
15.39
11.88
7.82
10.45
6.39
17.88
1.97
11.88
17.88
13.82
0.93
1.70
16.82
1.47
7.82
13.82
16.45
1.81
19.45
0.97
1.70
10.45
16.45
L
1.14
6.39
1.31
20.88
20.88
4.06
Large Handle
12.39
1.14
1.10
15.39
1.31
6.39
12.39
1.14
(1) This enclosure depth dimension is used to calculate the length of Allen-Bradley connecting rod(s). See Allen-Bradley instructions.
(2) This depth dimension exceeds maximum depth for 1494V-DS60, DS60, DS100,and DS200. A six-inch platform is provided with the 24.12
deep enclosure to position the disconnect within the depth range of the 1494V-RA4 connecting rods.
-9-
&copy; 2018 Hoffman Enclosures Inc.
PH 763 422 2211 • nVent.com/HOFFMAN
87569091
Centerpost Disconnect
Sub-Panel Instructions
Step 1 - Drill and tap holes in panel PER ALLEN-BRADLEY INSTRUCTIONS.
Step 2 - Install panel in enclosure.
Step 3 - Mount disconnect switch or circuit breaker on panel using Allen-Bradley instructions and parts.
For variable depth disconnects, find the enclosure depth dimension. See Allen−Bradley instructions to cut
the connecting rod to length required and install and adjust Allen−Bradley connecting rod per Allen−Bradley instructions.
Enclosure
A21
Small Handle
Height
Depth
G
60.12
12.12
18.12
1.53
72.12
1
H
7.88
13.88
J
0.22
Large Handle
K
5.82
11.82
G
1.70
H
6.45
12.45
J
0.05
K
4.39
10.39
(1) This enclosure depth dimension is used to calculate the length of Allen-Bradley connecting rod(s).
See Allen-Bradley instructions.
- 10 -
&copy; 2018 Hoffman Enclosures Inc.
PH 763 422 2211 • nVent.com/HOFFMAN
87569091
Rev. H
&copy; 2018 Hoffman Enclosures Inc.
PH 763 422 2211 • nVent.com/HOFFMAN
P/N 99401960
87569091
Rev. H
&copy; 2018 Hoffman Enclosures Inc.
PH 763 422 2211 • nVent.com/HOFFMAN
P/N 99401960
87569091
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Key features

Designed for Allen-Bradley disconnects
Supports both small and large handles
Installation on right flange or centerpost
Adjustable safety lock release
Door catch included

Frequently asked questions

This adapter is compatible with Allen-Bradley Bulletins 1494V, 1494C, 140G and 140U.

This adapter can be installed on floor-mounted enclosures with the disconnect on the right flange or centerpost, and on one through six door free-standing enclosures with the disconnect on the right flange.

The door catch prevents the door from being opened when the Allen-Bradley operating handle is in the 'ON' position.

What Allen-Bradley Bulletins are compatible with this adapter?

Where can this adapter be installed?

What does the door catch prevent?

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