14
INST
ALLA
TION
6. INSTALLATION
General Guidelines
• Select controller location so that it is shielded from direct sunlight, dripping water and excess
vibrations.
• Select the nutrient injector point away from the sampling point to prevent triggering an alarm.
• Keep flow rate as constant as possible for optimum sensor operation.
• Install cable gland fittings and plugs, to properly seal the pump controller.
• The probe is easily installed using
1/2
" NPT threads for in-line or flow cell installation, and
3/4
” NPT
thread for reservoir immersion installation.
• Ensure all tubing, cables, saddles and fittings are properly connected.
Note:
HI981413-10
and
HI981413-20
Groline Nutrient controllers are shipped with two types
of tubing, for both flow cell and in-line configurations:
-
rigid tubing for outlet (dispensing) - connects the pump output to the injector
-
flexible tubing for inlet (aspiration) - connects the filter to the pump inlet
Wiring Guidelines
Running cables through cable glands
• Unscrew the gland nut and remove the cap.
• Thread cable through outer opening of proper gland nut, through the seal, and into case.
• After connecting to terminal, reinsert seal and tighten nut on the threaded gland.
Connecting cables to the internal terminals
• Using a screwdriver, connect the cable leads to the appropriate terminal.
• Following the printed lead markings (L, PE, N for power supply; NO, COM, NC for relay; level sensor
if required) ensure the leads are wired to the correct position.
Installation Steps
1. Check the nutrient tank level.
2. Calibrate the EC probe before installing in the system.
3. Mount the probe into saddle or into a flow cell.
4. Connect the aspiration tubing between the chemical tank and the pump’s inlet.
5. Connect the dispensing tubing between the pump and injector.
6. Check the level sensor’s functionality (if used).
Содержание Groline HI981413
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