nVent HOFFMAN SQDC Bulletin 9422 Flexible Cable Operating Mechanisms Instruction Manual
- June 12, 2024
- nVent HOFFMAN
Table of Contents
OPERATOR ADAPTER SQDC
Installation Instructions for Square “D” Bulletin 9422 Flexible Cable
Operating Mechanisms
(For parts list, see Page 2)
For floor-mounted enclosures with the disconnect on the right flange For one- through six-door free-standing enclosures with the disconnect the the right flange For floor-mounted enclosures with the disconnect on the centerpost
WARNING
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 |
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.
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 * PARTS OF LOCK RELEASE MECHANISM
© 2018 Hoffman Enclosures Inc,
PH763422 2211
+ nVent.com/HOFFMAN
89115501