9
Installation
Wiring
The optical air eliminator requires a LectroCount LCR/
LCR-II Electronic Register with CPU board part number
81920 (LC³ with 81924). If the LectroCount does not
contain an 81920 CPU board (LC³ with 81924), this board
must be ordered as a replacement to the existing CPU
board.
The 81920 CPU board has an additional connector, con-
nector J15, not present on other board models. On the
LC³ 81924 CPU board it is connector J11.
To make the connection to a LectroCount Register, the
optical sensor comes supplied with a 24” cable. The cable
is potted in the optical sensor assembly at one end. A
threaded cord grip is included to fasten the other end of
the cable into the back of the LectroCount Register. The
solenoid requires a 12 AWG, two-wire, braided cable,
approximately 24 to 36” in length.
!
WARNING
For North American Installations, the installation must be fully in accordance with the National Elec-
trical Code (US) or the Canadian Electrical Code respectively to maintain the hazardous location
ratings on the product. This may involve using rigid conduit for all connections.
!
Caution
Incorrect wiring can damage the optical sensor.
Step 1 - Remove Cable Plug
Loosen and remove the screw from the cover of the S3
solenoid valve cable plug. Remove the cable plug from the
solenoid valve coil. Remove the cover from the cable plug
housing and then remove the terminal block. Be sure to note
its orientation in the housing. Leave the flat gasket in place
on the coil.
Step 2 - Connect Cable to Cable Plug
Route one end of the cable through the conduit fitting and
into the cable plug housing. Connect the cable wires to the
terminal block. Connect the BLACK wire to Terminal 2 and
the RED wire to Terminal 1. These indicators are marked on
the terminal block.
