Installation; General Guidelines; Installation Steps - Hanna Instruments BL120 Instruction Manual

6. INSTALLATION

There are two available configurations:
• In-line, with the probe placed in saddle, mounted on pipe after the pool filter.
• Flow cell, with the probe mounted in the flow cell, close to the controller. The water sample is directed to the flow cell via
a small diameter sample line with appropriate connections (provided).
With flow cell configurations, the water circulation can be stopped by closing the valve on the inlet while maintenance or
calibration procedures are performed.

6.1. GENERAL GUIDELINES

Electrical connection, installation, start-up, operation and maintenance must be carried out by specialized personnel only.
• Select controller location so that it is shielded from direct sunlight, dripping water and excess vibrations.
• Keep flow rate as constant as possible for optimum sensor operation.
• Install cable gland fittings and plugs as needed, to properly seal the pump controller.
• For optimal operation, all tubing, cables, saddles and fittings must be properly connected.
• For in-line installation, the probe saddle should be positioned after the pool filter (within 2 m distance).
Caution! Use gloves, protective clothing and eye protection goggles when working with injectors and tubing.
Note: Determine if a flow detector, alarm relays or analog outputs (BL121, BL123) will be used before mounting flow
cell panel or pool controller, as access to rear sub panel is needed.

6.2. INSTALLATION STEPS

Note: Recirculation pump must be off.
1. Check the acid and chlorine reagent tank level.
2. Calibrate the probe before use in the system.
3. Mount the probe into saddle (in-line configuration) or in a flow cell.
4. Mount the injector saddles (see procedure).
5. Connect the flexible PVC aspiration tubing between filters in chemical tanks and inlet of pumps.
6. Connect the rigid PE dispensing tubing from the pump outlets to the injectors.
7. Check the level sensor's functionality (if used).
8. Check hold input functionality (if used).
BL12X controllers are shipped with two types of tubing, for both flow cell and in-line configurations:
• rigid tubing for outlet (dispensing) – connects the pump outputs to the injectors
• flexible tubing for inlet (aspiration) – connects the reagent filters to the pump inlets
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