LINC milton roy L471 Series, Instruction Manual, Page: 7 / 24

I N S T R U C T I O N M A N U A L
I N S T A L L A T I O N
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Page 6
Installation:
Before installing the level con-
trol, inspect the unit for any
damage. The float arm must
pivot freely. Thread the level
control into the desired connec-
tion. See Drawing 3 for
Suggested installations. The
float requires a minimum clear-
ance of 1 1/4" from the center
line of the unit for proper opera-
tion. For fail-safe operation as a
high level alarm, the conduit
connection must be positioned
to the highest possible location.
For operation as a low level
alarm, the conduit connection
must be positioned to the lowest
possible location. Wiring con-
nections may now be made. Do
not allow the wiring connections
to pull on the switch assembly.
Caution: Do not exceed switch
ratings.
LINC-L471, LINC-L471SC:
SPST, 100 VA AC with 3 AMP
inrush capability, maximum 250
volts.
Breakdown voltage is 300
volts. Electrical ratings are
given for resistive loads. For
inductive loads, de-rate the
switch rating by 50% and do not
exceed the VA ratings on the
inrush current. If the applied
load is inductive, such as a relay
or coil, then a protective device
should be used to prevent
"inductive kick," which may burn
the switch contacts. The protec-
tive device recommended is
dependent on the voltage used.
For DC operation, a diode simi-
lar to an IN34A should be wired
in parallel with the switch. See
Page 11 wiring schematic. For
AC operation, a Varistor should
be wired in parallel with the
switch.
For SPST Switch Cartridge
Wiring:
White
- Common
Black - Normally Open
For SPDT Switch Cartridge
Wiring:
White
- Common
Black - Normally Closed
Red - Normally Open