Hayward OmniLogic HLEXPAND Owner's Manual page 17

External Input Interlock
Like the OmniLogic's External Input Interlock, the HLEXPAND's input provides a means to turn the filter pump or other component on/off when certain condi-
tions exists. A normally open or normally closed on/off external device must be connected to the HLEXPAND as shown below. After properly configuring the
OmniLogic (see Configuration Wizard in the HLBASE Installation Manual), the filter pump and/or desired pool component will be forced on or off when the device
is active. Record all connections using the table on page 8.
HL-CHEM ORP and pH Sensing Kit
Plug in the connector from the HL-CHEM into one of the Low Speed Bus connectors on the HLEXPAND'S Main Board as shown below. Refer to the HL-CHEM
manual for complete installation instructions.
Route cable
through
access hole
Route
though
knockout
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
Connect Probe Cell cable here
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