Flowserve L120-190 through L120-2000 - Manual (Page 16)

Limitorque ® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11
16
Table 5.3 – Terminal Dimensions By Cable Size
AWG Screw Hole Insulation
Thomas &
Betts P/N
A B C
22-16 #10 Vinyl 18RA-10 .97 .31 .27
18-14 #10 Vinyl 14RB-10 .97 .31 .27
12-10 #10 Vinyl 14RC-10 1.06 .31 .27
Terminals are to be crimped using Thomas & Betts crimping tool WT111M.
5.5 Geared Limit Switch – Rotor Type
a CAUTION: The geared limit switch is not preset at the factory and must be adjusted after the
actuator has been mounted on associated equipment.
NOTE: Limit switch contacts are rated 600 volts, in accordance with NEMA ICS-2
• Disconnect all incoming power to the actuator prior to opening the limit switch compartment and
adjusting the switch.
• Consult the relevant wiring diagram for limit switch contact development. All L120 actuators are
supplied with 16-contact limit switches - four switches on each of the four rotors. Two rotors are
used for end-of-travel indication. The remaining two rotors may be adjusted for any intermediate
point-of-travel.
• Do not use abrasive cloth to clean the contacts on the limit switch.
• Do not attempt to repair gearing in the limit switch. Replace entire gear frame assembly if necessary.
5.5.1 Setting Limit Switch
The maximum number of drive sleeve turns available is a funtion of actuator size, worm gear ratio,
and type of switch. See Table 5.4. The Intermediate Shaft shown in Figure 5.5 may take a considerable
number of turns before rotor trip occurs.
c WARNING: Potential Explosion Hazard. Do not use a variable speed electric drill for setting the
limit switch in an explosive environment.
a CAUTION: When setting the limit switch rotor segments (cams) using a variable speed electric
drill, do not run drill at speeds higher than 200 RPM. Operating the drill at high speeds can
damage the gearing within the limit switch.