SQDC Bulletin 9422 Flexible Cable Operating Mechanisms
Product Information
The Operator Adapter SQDC is designed for use with Square D
Bulletin 9422 Flexible Cable Operating Mechanisms. It is used in
conjunction with disconnect switches and circuit breakers mounted
in Hoffman disconnect enclosures. The adapter comes with a
comprehensive parts list, including the necessary screws, washers,
and other components.
Product Usage Instructions
- Step 1: Install the mounting plate (item 1)
and plate gasket (item 2) on the inside of the enclosure, behind
the rectangular opening provided. Make sure the gasket side with
PSA (Pressure Sensitive Adhesive) is attached to the adapter plate.
Secure in place using four screws (item 3) and four nylon washers
(item 14). - Step 2: Remove the Square D stiffener bracket
that is typically installed inside the enclosure flange, behind the
operating handle. - Step 3: Assemble the Square D operating handle
and cable handle mechanism to the mounting plate installed in step
1. Do not use the cap screw and lockwasher that fit into the bottom
hole of the Square D operating handle. - Step 4: Modify the slide arm (item 4) only if
it is being installed in an enclosure with a disconnect on the
centerpost. Cut 2.5 inches off the bottom end of the slide arm,
ensuring that only the bottom end with rectangular holes is
removed. - Step 6: 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 the adjustment is
complete (see step 7B). - Step 7: The handle safety lock release
mechanism is adjustable. Please refer to the detailed instructions
provided in the user manual for adjusting this mechanism.
Note: It is important to ensure that the function, fits, and
clearances of all equipment are checked both before and after
installation to guarantee proper and safe operation, as well as
compliance with applicable codes, standards, and regulations. In
case of any issues or non-compliance, do not attempt to make
alterations or operate the equipment. Contact Hoffman Customer
Service immediately for assistance.
OPERATOR ADAPTER SQDC
Installation Instructions for Square “D” Bulletin 9422 Flexible Cable Operating Mechanisms (For parts list, see Page 2)
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Rev. B
© 2018 Hoffman Enclosures Inc.
PH 763 422 2211 · nVent.com/HOFFMAN
P/N 89114661
89115501
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 SQDC, for Square “D” Bulletin 9422 Disconnects
Item No. Description
Part No.
Qty.
1
MOUNTING PLATE, SQ D CABLE OPERATOR
27206002
1
2
PLATE GASKET
89109613
1
3
SCREW, 1/4-20X1/2 PAN HEAD
99401031
4
4
SLIDE ARM
26250001
1
5
SHOULDER COLLAR
26149001
1
6
SCREW, 1/4-20X7/8, HEX HEAD
99401030
1
7
LOCKWASHER, 1/4 SPRING
99401318
1
8
WASHER, FLAT
22101003
2
9
LOCKWASHER, 1/4 INTERNAL TEETH
99401300
2
10
NUT, 1/4-20 HEX
99401406
2
11
DOOR CATCH
23101002
1
12
SCREW, 10-32X3/8 PAN HEAD
99401007
2
13
LOCKWASHER, #10 INTERNAL TEETH
99401307
2
14
NYLON WASHER
26132003
4
15
INSTALLATION INSTRUCTIONS
89114661
1
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© 2018 Hoffman Enclosures Inc.
PH 763 422 2211 · nVent.com/HOFFMAN
89115501
INTRODUCTION
This installation instruction is for Square “D” Bulletin 9422 (flexible cable) mechanisms. These mechanisms are for disconnect switches and circuit breakers mounted in Hoffman disconnect enclosures.
INSTALLATION STEPS
Step 1 Install mounting plate (item1) and plate gasket (item 2) on the inside of the enclosure, behind the rectangularopening 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 Discard the Square “D” stiffener bracket which is normally installed inside the enclosure flange, behind the operating handle.
Step 3 Assemble the Square “D” operating handle and cable handle mechanism to the mounting plate which was installed in the enclosure in step 1. Omit cap screw and lockwasher which fits into bottom hole of Square “D” operating handle.
Step 4 Modify slide arm (item 4) only if it is being installed in an enclosure with disconnect on centerpost. (cut 2.5 inches off the bottom end of slide arm. Bottom end has rectangular holes only)
Step 5 Install the slide arm (item 4) over the projecting part of the handle assembly (on Square “D” operating handle) with notch toward door opening, as shown. 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 Square “D” operating handle and tighten. The slide arm and interlock arm should move up and down smoothly. Install locking lever extension (Square “D” part) per Square “D” instructions.
Step 6 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 7B)
Step 7 The handle safety lock release mechanism is adjustable.
(A) Check the adjustment of the factory installed roller bracket on enclosures with disconnect on right flange. 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.
(B) Adjust the length of the slide arm assembly. With proper adjustment of the slide arm, the safety lock(on Square “D” handle operator) 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 8 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 lockwashers (item 13). The door catch prevents the door from being opened when the switch is in the “ON” position.
Step 9 Drill and tap holes in panel per Square “D” insructions. See Square “D” instructions for locating holes.
Step 10 Mount switch or circuit breaker using Square “D” instructions and parts.
89115501
© 2018 Hoffman Enclosures Inc.
PH 763 422 2211 · nVent.com/HOFFMAN
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For Floor-Mounted, Two-Door Enclosures with Disconnect on Right Flange For Floor-Mounted, Two-Door Enclosures with Disconnect on Centerpost For One- Through Six-Door, Free-Standing Enclosures with Disconnect on Right Flange
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© 2018 Hoffman Enclosures Inc.
PH 763 422 2211 · nVent.com/HOFFMAN
89115501
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