DELTA M Corporation
3242-OM-04 3/27/02
20
5.0
OPERATION AND CALIBRATION OF THE microtuf
®
LS3200 SERIES SWITCH FOR
POINT LEVEL APPLICATIONS
5.1 Pre-Operational
Check
The switch is installed
and the product level is below sensor level (dry)
, the following
procedure can be used to verify preliminary operation.
1. Remove the instrument enclosure cover by turning counter clockwise to expose the
LS3200 Switch electronics.
2. Turn on power at its source.
3. Observe that either the red or green LED comes on.
4. If neither lamp illuminates refer to the trouble shooting Section, 6.2.
5.2
L.E.D. and Relay Status Logic (Fail-Safe)
5.2.1
The L.E.D.s (Red and Green) are an indication of the sensors status (ie. dry or wet) and are
not affected by the position of the fail-safe jumper J-2. The fail-safe jumper J-2 changes the
relay activation status allowing the user to select the fail-safe power off condition most
appropriate to the application. Refer to the tables below that show the logic conditions
between the sensors, L.E.D. lights, relay coil and contacts for each position of the fail-safe
jumper J-2.
5.2.2
Normal Operation (as set at factory)
The switch comes configured from the factory with the following operation with the J-2
jumper in the B (2-3) position. (Refer to Figure 8.0.)
RELAY
RED
GREEN
RELAY
CONTACT
SENSOR
STATUS
LED
LED
COIL
STATUS
STATUS
Dry, or Lower Thermal
o NC
Dispersion Fluid
ON
OFF
Activated
(ie.
hydrocarbons)
o
NO
Wet, or Higher Thermal
o NC
Dispersion
Fluid
OFF
ON
Deactivated
(ie. water)
o NO
