INSTALLATION and MAINTENANCE INSTRUCTIONS
SHO TWIN SPRING STACK ELECTRIC CABLE REELS
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.
MAINTENANCE
Periodically: A. Use compressed air to clean collector assembly and inside of collector housing. Inspect collector assembly for brush wear and pitted slip rings.
WARNING
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.
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.
“IN” with 2/3 | BROKEN SPRING | |
cable off reel– | INDICATORS | |
SPRING OK | ||
|
“OUT” with 2/3 cable off reel–
SPRING 
BROKEN
Figure 3
WARNING
Do not attempt to relieve spring tension using spanner
wrench. Doing so may result in personal injury.
INSTALLATION
1.Insure that machinery to be serviced by reel is at position closest to reel.
2.Securely mount reel in desired position using 3/8"(M10) bolts. Be sure spool is aligned with cable run.
3.Position optional cable guide, if reel is so equipped.
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 360º 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 EXPLANATION on parts list page.)
NOTE: If reel is equipped with ratcheted adjustment wrench, follow instructions on separate sheet.
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.
WARNING
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.
SPRING REPLACEMENT
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 discarded 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.
NOTE: Do not attempt to remove spring if resistance is met or hub tends to rotate with shaft.
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
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
| SPRING |
| HOUSING |
| COVER |
| PLATE |
| SPRING |
Figure 1 | HUB |
| COUNTER- |
| CLOCKWISE |
| FOR STANDARD |
| ROTATION |
Figure 2 | SPANNER |
WRENCH |
pawls and pawl springs are inserted flush with ends of shaft and
hub or they may rub against inspection cover.
| PAWL |
| SPRING | |
SPOOL |
| HUB | ||
|
| |||
SHAFT |
|
| (Spring not | |
|
|
| shown) | |
| SPRING |
| SHAFT | |
| Install |
| ||
SIDE VIEW | END VIEW | GROOVE | ||
against flat |
9. Tighten nuts (and extension bolts) securing spring |
housing(s) to reel frame. |
CAUTION
Do not exceed number of turns indicated on serial plate.
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. |
CONTINUED ON BACK PAGE 
