Emerson OLS Installation Instructions

FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY
BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE
PERSONAL INJURY AND/OR PROPERTY DAMAGE.
NPT Tank Connection
4 Pin Din Electrical Connection
ELECTRICAL CONNECTIONS
JB - Junction Box
FL - 6" Free Leads (Stripped
for Conduit Fitting)
DN - 4 Pin Din Plug
CB - 6' Cable (in non-shielded Jacket)
SG - Sight Glass Only
TANK CONNECTIONS
P - ½" NPT
R - 1¼" - 12 Rotolock
S - ¾" - 16 UNF-2A
(Included O-Ring)
NOTE
Inspect glass in Switch body, if product looks cracked,
damaged or dropped, please do not use.
TANK CONNECTIONS
Glass nut is always to be installed into compressor on true
horizontal within +10°.
FOR ½" NPT (Option P) & ¾"-16 UNF (Option S):
1. Place thread sealant on Teflon tape on threads.
Rotolock Tank Connection
Free Lead Electrical Connection
OLS XXX - XXXNX
NOTE: OLSX (low-temp) versions function the same as OLS versions
emerson.com/white-rodgers
OLS Optical Level Switch
INSTALLATION INSTRUCTIONS
Junction Box Electrical Connection
2. (Option S only) Ensure o-ring
shape with no cuts.
3. Tighten 1½" to 3 turns past finger tight such that 3-6
threads are engaged.
For 1¼"-12 ROTOLOCK (Option R):
1. Hand tighten 2-3 turns.
2. Use double wrench (one to hold tank connection and one
to turn nut) to fully tighten onto tank.
INSTALLATION
Straight Thread (3/4"-16)
Tank Connection
SWITCH TYPE
NC - Normally Closed
NO - Normally Open
INPUT VOLTAGE
024 - 24 VAC
120 - 120 VAC
240 - 208/240 VAC
INSTALLATION
is in good
PART NO. 2000-1072/04
2023