To Set Intermediate Switch (Lsa Or Lsb), If Included; Torque Seated Valves; Torque Switch Calibration - Emerson Bettis 2000 Series E796 M2CP Installation And Maintenance Manual

Section 4: Limit Switch Setting Instructions
September 2018
4.4

To set Intermediate Switch (LSA or LSB), if included

1.
NOTE:
"Jiggle" adjusting shafts.
4.5

Torque Seated Valves

If valve is a torque seated valve, and the geared limit contacts are used for indication only,
the LSC switch should be set several handwheel turns ahead of torque switch contact
action. This gives proper valve position Lamp indication in spite of minor position variations
which might occur due to torque seating.
4.6

Torque Switch Calibration

Figure 9
To set Close Torque Switch (TSC)
13
Open Valve to desired position, then repeat steps 2 thru 5 of LSO.
a. Close valve using handwheel. Set valve to the desired torque. Observe
rotating dial for number that corresponds to desired Close Torque.
b. Insert screwdriver in TSC slot. Press down to disengage and turn arrow to
setting determined in a). Release at this point and it will re-engage and
remain set.
c. Back the valve away from Close position and reseat by handwheel to
verify torque trip point is at desired setting. The trip point of switch is a
distinctive click as it breaks contact.
Installation and Maintenance Manual
E2K-402-0817 Rev. 3
Limit Switch Setting Instructions