Hubbell UE24 User Manual

Printed in USA

Bulletin No. 045394.a

®

®

P.O. Box 26 • 600 South Clark St.

Mayville, WI 53050–0026

Phone 920–387–4120 • Fax 920–387–4189

All units are provided with right hand rotation unless otherwise

specified.  This means that cable is pulled off spool top left or
bottom right (spool rotates clockwise to wind cable) when
viewing spring end of reel.  See diagram on parts page.

Clock-type springs provide power for automatic cable take-up.
Spring must be pretensioned at time of installation to
insure that tension is applied to cable at all times.  A tension
adjustment spanner wrench is provided with each reel. 

1.  Insure that machinery to be serviced by reel is at position 

closest to reel.

2.  Securely mount reel in desired position using 1/2"(M12)

bolts.  Be sure spool is aligned with cable run.

3.  Position optional cable guide, if reel is so equipped. 

See COMPONENT REFERENCE DRAWING.

4.  Connect free end of cable to junction box on machine or

adjust cable stop so that desired length of cable 
extends from reel.

5.  Remove cover plate on spring housing to expose

shaft and spring hub. (See Figure 1).

6.  Insert spanner wrench into holes in spring hub (Fig 2).

Rotate wrench counterclockwise (for standard rotation).
Number of 360

turns should match last digit in model 

number on serial plate. 

If model number includes an “R”,

reel is reverse rotation and wrench must be rotated 
clockwise. (See “TO DETERMINE ROTATION OF REEL” 
on parts drawing page.) 

NOTE:  On reels containing more than one spring, the hubs

are connected at the factory.  Therefore, by tightening the

outer spring, the inside spring(s) will be tightened.

7.  Remove collector cover and connect individual supply 

conductors to collector terminals.  See ELECTRICAL
CONNECTIONS diagram, on back page.

Do not attempt to relieve spring tension using span-

ner wrench.  Doing so may result in personal injury.

Some reels with large or multiple springs are equipped with

a ratcheted adjustment wrench.  Follow separate instruc-

tions for its use.  Failure to use ratcheted wrench, on reels

so equipped, could result in serious personal injury.

Do not exceed number of turns indicated on

serial plate.  Over-tensioning can cause a 

broken spring, sheared shaft or other damage.

COVER

PLATE

SPRING

HUB

SPRING

HOUSING

COUNTER-

CLOCKWISE

FOR STANDARD

ROTATION

SPANNER

WRENCH

Periodically: A.  Use compressed air to clean collector
assembly and inside of collector housing.  Inspect collector
assembly for brush wear and pitted slip rings.

B. Inspect cable for wear and check mounting bolts and

other hardware for tightness. 

C. Check for broken

springs by pulling about 2/3
cable off reel and observing
“Broken Spring Indicators” on
sides of spring canisters.  See
Fig. 3.
NOTE: Bearings and springs
are prelubricated and require
no periodic maintenance.

The unique SAFETYCHANGE® spring motor consists of a
spring and hub sealed within a housing.  A replacement spring
is supplied sealed in its housing and the old unit should be dis-
carded completely.
1.  Turn off all electric power.
2.  Disconnect cable from machine junction box.
3.  Wind all cable onto reel to relieve all spring tension.
4.  Remove inspection cover from face of spring housing.
5.  Rotate spool clockwise and observe inner shaft. Shaft

should rotate clockwise and hub (with spring attached)
should remain stationary.

Continue to rotate spool and strike end of shaft 

several sharp blows with a lead hammer or rubber mallet 

until shaft rotates freely and hub remains stationary.  

6.  Remove (4) nuts which secure spring motor(s) to frame.
7.  Slide spring motor(s) off shaft and discard. 

NOTE: On multi-spring reels, be sure to remove and save

dowel pins which connect one spring hub with another. Also

remove snap rings on shaft between reel housings. 

8.  Install replacement spring motor(s), pawls and pawl springs.

NOTE: Pawl springs must be located between the pawls
and the deepest section of the shaft grooves.  Make sure

that pawls and pawl springs are inserted  flush with ends of

shaft and hub or they may rub against inspection cover.

9. Tighten nuts (and extension bolts) securing spring

housing(s) to reel frame.

10. Connect free end of cable to junction box on machine or 

adjust cord stop so that desired length of cord extends from reel.

11.  Tension spring with spanner wrench. Refer to

INSTALLATION  section.

12.  Replace inspection cover.

Do not attempt to remove spring from its housing. Clock-

type springs can be dangerous to handle.  Removal of

spring from housing could result in personal injury.

“IN” with 2/3

cable off reel–

SPRING OK

“OUT” with 2/3

cable off reel–

SPRING 

BROKEN

PAWL

SPRING

Install 

against flat 

SPRING

HUB

(Spring not

shown)

SHAFT

GROOVE

SPOOL

SHAFT

Use the following procedure to remove worn or damaged cable
from reel prior to installation of new cable.

1. Move machine serviced by reel to a position closest to

reel.  Springs will still be under pre-tension at this point.

2.  Turn off all electric power.
3.  Lock spool to prevent turning using either a spool lock 

mechanism or by tying off.  

4.  Disconnect cable from machine junction box.
5.  Grip spool by hand and carefully release spool lock or 

tie.  Slowly unwind remaining tension.

6.  Again lock or tie spool to prevent rotation.
7.  Remove cable from spool.  Loosen cable clamp and 

water-tight connector.  Disconnect conductors from slip ring 
and remove cable.

8.  Install new cable following instruction at right.

Use the following procedure to replace cable or if reel was
ordered without cable. Refer to ELECTRICAL CONNECTIONS
DRAWING, below.
1.  Unspool new cable from shipping spool and lay out

to eliminate twist.

NOTE: This step is not essential, but will aid in winding 

operation of the reel and prolong cable life.

2.  Feed one end of the cable through water-tight connector on 

the spool hub inside the spool and into the slip ring. 
(See drawing below).

NOTE: This may require that jacket of cable be stripped 

to allow conductors to pass through shaft.

3.  Connect individual conductors to appropriate rings on 

collector using crimp fitting or similar connection method.

4.  Tighten water-tight connector.  Place cable clamp on cable 

and securely fasten to spool disk.

5.  Wind the cable onto the reel spool by hand rotating 

spool in direction it turns free of spring tension.

6.  Connect free end of cable to machine junction box.
7.  Pretension reel and complete installation as 

previously described.

1. Turn off all power to reel.  
2.  Remove collector cover and gasket.  
3.  Disconnect electric leads to and from collector.
4.  Remove button plug from hole in side of housing.  Insert 

long 1/8” Allen wrench through hole and loosen two set 
screws in collector locking collar  Set screws are at 90

O

to one another.. 

5.  Slide collector off shaft.
6.  Install new collector by reversing above steps.

Failure to relieve all spring tension prior to removing

cable could result in damage to equipment or personal

injury.  Follow instructions carefully.

SLIP-RING LEAD TO

MOVING CABLE

CONNECTIONS

SLIP-RING

LEADWIRES ARE

NUMBER TAGGED

LEADWIRE INPUT FIXED END

(CUSTOMER SUPPLIED)

CABLE LEADWIRES

MOVING END

CABLE

CABLE

CLAMP

SET

SCREW

COLLAR

WATER–TIGHT

CABLE CONNECTOR

BRUSH TERMINAL

CONNECTIONS

SLIP–RINGS

SPOOL

DISK

SPOOL

HUB

FRAME

•

600 VOLT AC.  250 VOLT DC.  WATERTIGHT, DUST TIGHT.

•

DO NOT EXCEED AMPERAGE RATING OF CABLE OR SLIP RING.

•

NUMBER OF CIRCUITS MAY VARY FROM TWO (MINIMUM) TO 36 (MAXIMUM).  FOUR CIRCUITS SHOWN.

NOTE:
Wire size, wire connectors, connection sequence,
and connection methods must comply with
National Electrical code and Local Electrical ordi-
nances.  If in doubt, contact a local electrical con-
tractor or electrical inspector.

COLOR SEQUENCE FOR TYPE SO CABLE
THREE CONDUCTOR CABLE

# 1 – BLACK
# 2 – WHITE
# 3 – GREEN  (ground)

FOUR THRU TWELVE CONDUCTOR CABLE

#  1 – BLACK  
#  2 – WHITE
#  3 – RED
#  4 – GREEN (ground)
#  5 – ORANGE
#  6 – BLUE
#  7 – WHITE W/ BLACK TRACER
#  8 – RED W/ BLACK TRACER
#  9 – GREEN W/ BLACK TRACER
#10 – ORANGE W/ BLACK TRACER
#11 – BLUE W/ BLACK TRACER
#12 – BLACK W/ WHITE TRACER