Aero-motive GR900 Series Service Manual - Page 3

Browse online or download pdf Service Manual for TV Cable Aero-motive GR900 Series. Aero-motive GR900 Series 6 pages. Aero ground fault cable retractor service manual

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SPRING TENSIONING

Failure to test for adequate spring revolutions can cause spring damage. Hazards or

CAUTION:

unsafe practices MAY result in minor personal injury or product or property damage.

NOTE: A minimum 2 pre-tension turns is required. Additional turns can added as long as one unused

spring turn remains when cable is completely extended. If entire cable cannot be pulled out,

decrease spring tension until full one turn remains.

All reels require pretensioning turns to spool assembly before connecting free end of working cable. Set

spring tension by turning fully wrapped reel through a specific number of revolutions or turns. Number of

pretension turns depends on application and desired tension. A minimum of 2 set up turns is needed

for most applications. Additional tension may be added by repeating above process. Failure to

pretension reel may result in insufficient tension to retract and may shorten spring life.

After cable is installed, apply the extra warning label (35) shipped with the reel, to the insulated cable that

protrudes beyond the cable stop.

Check to make sure that the cable can still be pulled out without winding the main spring to

CAUTION:

the end. If the cable can not be pulled out completely, too many prime turns have been

applied and some will have to be removed. Operating the reel with too many prime turns will

restrict the cable travel and shorten the life of the main spring.

CONNECTING GROUND

The ground connection cable should be as large or larger than the cable installed on the drum. It is

attached to the reel by connecting to the ½" diameter copper rod protruding beyond the junction box

cover

(11), on the base (3). Connection should be made with a commercial fitting specifically intended for

attaching this size cable to ½" diameter copper rod.

Failure to make mechanically and electrically sound connection at both ends of the cable will

WARNING:

create and electrical shock hazard and could result in property damage, personal injury, or

death.

ADJUSTING CABLE GUIDE

Cable guide position is set by rotating the spring pocket assembly. Loosen three clamps holding spring

pocket assembly in place by unscrewing three hex head bolts. Unless required, do not completely

remove bolts or clamps. Reposition guide as required, making sure clamps straddle ribs on outside

diameter of spring pocket assembly and retighten hex head bolts.

CAUTION:

Pulling the cable at sharp angles to the cable guide will shorten the cable life and retard

retraction speed.

OPERATION

RATCHET LOCK

All reels are supplied with a ratchet lock to hold drum at any of several positions per drum

revolution and prevent if from retracting. If ratchet lock is not required--constant tension--, move spring

clip and spring to adjacent cable guide screw. To release ratchet, pull cable out until ratchet pawl

disengages.

GROUND FAULT CONNECTION

When the cable is pulled out and connected to provide ground fault protection, all of the cable should be

fully extended to provide maximum current capacity and a padlock must be installed on the reel through

the hole provided in the flange of the spool. This padlock prevents drum rotation and assures that the

cable remains unwound should a ground fault occur.

SM3120-18D

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