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Series 5A and Series 5B I.S. Valve Status Monitor
Installation, Operation and Maintenance Manual
13. Position Adjustment
A single or doubled lobed cam is provided for every
independent/main switch. Double lobed cams are
provided when the switch configuration could
include an auxiliary switch. Double lobed cams
will activate both main and auxiliary switches at
the same time.
Cams are mounted to the indicator shaft, alternating
between red and yellow and are independently
adjustable by hand in 3.6° increments. No special
tools are needed for this adjustment. The self-locking
design ensures that cams will not slip position.
The bottom red cam is intended to indicate the close
position while the bottom yellow cam is intended
to indicate the open position. Both of the switches
associated with these cams are labeled accordingly.
An additional red and yellow cam may be installed
for most switches and can be used for mid-travel
position indication or to provide an additional
auxiliary open and close indication. Mid-travel
switches are unlabeled.
Closed Travel Indication Adjustment
1. Operate the quarter turn device until it
reaches the desired closed position.
2. Pull the bottom red close cam upwards
towards the yellow cam to disengage the
cam from the fixed cam holder.
3. While the cam is disengaged, rotate the cam
to the position that will activate the close
switch.
a. NOTE: Do not attempt to adjust cams
prior to disengaging the cam from the
fixed cam holder.
4. Release the cam and allow the locking spring
to re-engage the cam with the fixed cam
holder.
Open Travel Indication Adjustment
1. Operate the quarter turn device until it
reaches the desired open position.
2. Push the bottom yellow open cam towards
the bottom red cam to disengage the cam
from the fixed cam holder.
3. While the cam is disengaged, rotate the cam
to the position that will activate the open
switch.
a. NOTE: Do not attempt to adjust cams
prior to disengaging the cam from the
fixed cam holder.
4. Release the cam and allow the locking spring
to re-engage the cam with the fixed cam
holder.
Mid-Travel Indication Adjustment
1. Operate the quarter turn device until it
reaches the desired mid-travel position.
2. Disengage the cam from the cam holder.
a. NOTE: Mid-travel cams are disengaged
similarly to the open and close cams.
3. While the cam is disengaged, rotate the cam
to the position that will activate the mid-
travel switch.
a. NOTE: Do not attempt to adjust cams
prior to disengaging the cam from the
fixed cam holder.
4. Release the cam and allow the locking spring
to re-engage the cam with the fixed cam
holder.
Summary of Contents for 5A Series
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