Lake Monitors Flow Alarms - Manual (Page 3)

The pointer indicates the set point for the alarm switch. In Illustration
1, the switch will be actuated at all flow rates below 4 GPM. To
change the set point, simply loosen the switch glide screw one (1)
turn and slide the switch to the desired position along the flow rate
scale. When the pointer is pointing to the desired flow rate, re-tighten
the switch glide screw.
Switches
The switch is a simulated roller, lever operated low force microswitch.
The specifications for this switch are listed on page 24. The switch is
actuated when movement of the follower causes the switch lever to
be lifted. In Illustration 2, the switch has not yet been actuated, and
the electrical circuit is through the normally closed (NC) contact.
Illustration 3 shows the switch af
ter it has been actuated. In this sce-
nario, the electrical circuit is through the normally open (NO) contact.
Precautions
Be certain to properly ground the unit via the ground (G) pin
located on the unit’s din connector.
In order to avoid accidentally removing the switch glide screw,
never loosen it by more than one or two turns. This screw can be
difficult to replace if accidentally removed.
Avoid over tightening the switch glide screw.
When the switch adjustments are complete, make certain that the
wires that are attached to the switch have not been moved into a
location that will interfere with the follower or the switch lever.
Do not make any modifications to the unit’s internal wiring.
Page 3 / Flow Alarms / Lake Manual
TRIGGER
COMMON
SWITCH LEVER
FOLLOWER
METER CASING
NO
NC
Illustration 2 Illustration 3
TRIGGER
COMMON
SWITCH LEVER
FOLLOWER
METER CASING
NO
NC