Replacing Components; Replacing Sensors - Blue I HydroGuard HG-302 Manual De Uso

5.7

Replacing Components

The following procedures describe how to replace certain HydroGuard components.
Caution: The following procedures should only be performed by properly qualified and trained
HydroGuard controller technicians.
Warning: Disconnect all power supplies to the HydroGuard controller before opening the control unit door.
Replacing any parts of HydroGuard without the expressed written authorization of Blue I Technologies Ltd. or
the qualified representative who supplied the product may void the warranty.
Blue I Technologies Ltd. takes no responsibility, written or implied, for installation or
maintenance of HydroGuard that is not performed by a properly trained and certified
HydroGuard technician.

5.7.1 Replacing Sensors

Replacing the ph or ORP sensor
1. Turn off the inlet and outlet water to the flow cell and the power to the controller.
2. Open the doors of both the analyzing module and the control module.
3. Locate the sensor in the flow cell that is to be replaced. The specific
sensor may be identified by the label on the wire or by tracing the wire from the control
panel back to the sensor.
4. Remove old sensor from flow cell:
A. Unplug the sensor's wires from the sensor, by grabbing the connector at the top end of
the sensor and unscrewing the connector.
B. Unscrew the sensor from the flow cell
C. Pull the sensor up until its glass tube or metal probe clears the hole.
5. Prepare new sensor to be installed:
D. Open the replacement sensor's box, and remove the sensor by the metal connector.
E. If the sensor has a rubber or plastic plug at the tip of the glass tube, remove the plug
and shake the sensor. The protecting oil inside the glass tube may interfere with the
sensor's readings.
2. Install new sensor:
A. Hold the sensor by its metal connector, with the glass tube pointing down, and insert
the glass tube into a hole in flow cell.
B. Screw the probe into place. DO NOT OVERTIGHTEN
C. Screw the sensor wire onto the probe.
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