19
Limitorque
®
L120-190 through L120-2000 FCD LMENIM1203-01-A4 – 05/15
flowserve.com
NOTE: The cross-slotted shafts A, B, C, and D have been designed for use with a No. 2 Phillips
screwdriver shank chucked into a variable speed reversible electrical drill. Do not run drill at speeds
higher than 200 RPM (see previous CAUTION on page 16).
a CAUTION: Do not operate the valve when the Clutch Screw is in a fully depressed position. Loss
of contact setting will occur and the setting rod will be damaged.
8. Operate the valve by handwheel to the fully “close” position; reverse direction by one turn of the
handwheel to remove backlash from gear components.
9. Set the other rotors by following steps 1 through 7.
10. Secure the Limit Switch Compartment Cover (piece #200-1 of Figure 7.3 for L120-190 and -420,
Figure 7.6 for L120-800, and Figure 7.7 for L120-2000).
NOTE: For actuators having captive bolts, pull-down torque must not exceed 30 ft lbs.
4.5.2 Combination of Contacts
Refer to Figure 4.5.
The rotor segments can be separated and rotated through 90° to give various combinations of normally
open or normally closed contacts to each rotor.
1. Remove Nuts (piece #8) and Fillister Head Machine Screws (piece #5) for a total of two fasteners on
each side of the switch.
2. Remove complete contact assembly from the back plate.
3. Rearrange cams on the camshaft to produce the required combination of contacts.
4. Replace contact assembly on back-plate (ensuring the registers fit correctly) and secure with the
machine screws and nuts.
4.6 Position Indication
4.6.1 Local Position Indication
The local dial position indicator is factory-built per the application. The position indicator can only be
adjusted when mounted on the valve.
Figure 4.6 – Position Indicators
NOTE: See the setting procedure on the following page.
MID-TRAVEL
CLOSE
OPEN
25
50
75
100
PERCENT
OPEN
0
To Next Page
Loading...
