17
IOM-181 | MODEL: ECOSYSTEM™ WITH XLT CONTROLLER | REV: C
13839 West Bellfort Street, Sugar Land, TX 77498
welker.com
Service Department: 281.491.2331
Electrical Connections
Turn OFF the electrical supply prior to making electrical connections.
8.
Connect an appropriate electrical supply to the controller. Refer to industry standards for appropriate electrical
connections to interface with the PLC.
For systems used in hazardous locations, sealing compound is required to seal all fittings to restrict the passage of gases, vapors, or
flames.
9.
Connect the customer gas flow signal device to the termination block.
The controller can accept analog or pulse input.
10.
If the ECOsystem™ is not equipped with the optional flag tracker level indicator, installation is now complete; proceed to
Section 2.3, Start-Up Procedures
. If the ECOsystem™ is equipped with the optional flag tracker level indicator, continue to
step 11.
Flag Tracker Level Indicator (Optional)
The float and gasket must be installed to the flag tracker level indicator prior to filling the odorant supply tank.
The float and gasket are packaged separately for shipment.
11.
Remove the bottom drain flange from the base of the level indicator.
12.
Install the float to the spring on the bottom drain flange. The top of the float should point up.
The top of the float is marked to ensure proper orientation.
The spring attached to the bottom drain flange cushions the float when the odorant supply tank is empty.
13.
Replace the shipping gasket with the provided gasket.
14.
Install the bottom drain flange with float to the level indicator.
