Replacing Colorimetric Module; Module Software Update - Blue I HydroGuard HG-302 Manual De Uso

5.7.12 Replacing Colorimetric Module

Disconnect the power supply to the unit before opening the control unit.
Before replacing this card, first remove the pH, Redox and Temperature card as described in section
5.5.9.
Disconnect the flat cable plug from the colorimetric card. 1
1.
Unscrew the four (4) mounting screws. 2
2.
Put in the new colorimetric card and tighten the 4 mounting screws. 2
3.
Connect the flat cable plug to the colorimetric card. 3
4.
5. Replace and reconnect the pH, Redox and temperature sensors card as described in
section 5.5.9.

5.7.13 Module Software Update

Each electronic module has a microcontroller chip (IC) with its own unique software. Whenever a
module's software is updated, its chip must be replaced by a new version with the new software.
1. Turn OFF the power to HydroGuard.
2. Locate the chip that needs to be replaced
3. Remove the chip carefully by prying up each end a little at a time with a thin screwdriver.
4. Install the new chip in the same location. Please note in the figure that the chip and the
board each have a directional mark. The chip must be positioned so that these directional
marks are aligned.
Warning: Installing the chip in the wrong
direction will damage the system and can
create an electrical fire hazard.
J3
R30
R29
U1
Figure 23: Installing the new chip
53
R21 R21
R8 R8
Y1 Y1
J3
D3
R17 TP R17
R30
R29
R12 R12
C1 C1
U1
D3
TP
Directional Mark