Section 4: Geared Rotary Limit Switch Setting Instructions; Before Making Any Switch Setting; To Set Open Limit Switch (Lso) - Emerson Bettis 2000 Series Installation And Maintenance Manual

Section 4: Geared Rotary Limit Switch Setting Instructions

September 2018
Section 4: Geared Rotary Limit Switch
4.1

Before making any switch setting:

1.
2.
DANGER
Improper power voltage phasing eliminates protection of both geared limit switch and
torque switch, risking valve damage.
4.2

To set Open Limit Switch (LSO)

1.
Figure 7
10
Setting Instructions
Move valve to mid-position using handwheel.
Phase the power (motor) voltage and make sure that open contactor moves valve
Open and Close contactor moves valve Closed.
Open valve — During handwheel operation note direction of rotation of LSO
Adjusting Shaft (1) Fig. 7. After the valve is fully Open, Close it three handwheel
turns to allow for coast.
(1)
Installation and Maintenance Manual
E2K-401-0918 Rev. 1
Geared Rotary Limit Switch Setting Instructions