SM3120-18D
Page 4 of 6
© Aero-Motive Company Jul-01
WARNING:
Failure to unwind the full length of cable and then padlock the spool to prevent its
inadvertent rewinding, in the event of a ground fault, will create an explosion hazard which
could result in property damage, personal injury, or death
WARNING:
Personnel should be kept at a safe distance from the Ground Fault Reel and Cable. In the
event of a ground fault, the sudden surge of power will cause the cable to move violently and
could cause property damage, personal injury, or death.
WARNING:
This reel is intended for use in a grounding circuit only. The electrical path is not insulated
from the reel frame. Property damage, personal injury, or death could result if retractor is
not used in accordance with this manual.
WARNING:
Check all electrical connections on retractor and ground cable terminations before use.
Failure to do so may result in shock hazard causing property damage, personal injury, or
death.
SERVICE
WARNING:
If ground fault condition has occurred, remove the reel from service immediately and return
it to Aero-Motive Company for inspection and, if necessary, repair. Failure to do so could
result in and electric shock hazard causing damage, personal injury, or death.
MAINSPRING REPLACEMENT
If the reel will not develop tension or retract cable, the spring assembly may need to be replaced.
To replace the mainspring:
1. Disconnect the input grounding connection.
2. Remove junction box cover (11) and connector (12).
3. Remove shaft retainer screw (1) and shaft retainer (2).
4. Remove drum and main shaft from base (3).
5. Remove cable guide (16), spring clip (20), both screws (19), extension spring (15), shoulder screw
(21), and ratchet pawl (22) from spring pocket assembly (14).
6. Remove spring pocket assembly (14) from base (3) and replace with new spring pocket assembly.
Assemble in reverse order.
WARNING:
Spring pocket assemblies are sealed to prevent disassembly. Don not attempt to remove
spring from its pocket. Uncontrolled release of spring tension may occur causing property
damage, personal injury, or death.
WARNING:
Carefully inspect all wire connections after any service work is conducted. Failure to do so
could result in property damage, personal injury, or death.
MAINTENANCE
ELECTRICAL
1. Inspect all cable connections at least monthly.
2. Resistance through the reel slip ring assembly should never exceed 0.001 ohms. If so, return to
Aero-Motive Company for inspection and repair.
NOTE: The slip ring assembly has been designed in such manner that it cannot be disassembled
