Replacing Reagent Pumps; Replacing Colorimeter Module - Blue I HydroGuard HG-302 Manual De Uso

5.7.6 Replacing Reagent Pumps

1. Turn the power off to the controller.
2. Disconnect both pipes from the reagent pump.
3. Remove the four (4) mounting screws.
4. Disconnect the Red and Blue wires from the Pumps connector on the colorimetric module.
5. Install the new pump and reconnect (in this order): the pipes, the 4 screws and the wires to the
colorimeter module.
6. Push the pump button until reagents are injected into the colorimeter cell
(approximately 90 Sec.).
Note:
reattached. See 5.5.1 Replacing Pump Head and Tubes 0.

5.7.7 Replacing Colorimeter Module

The HydroGuard water quality controller has a self-contained chlorine analyzing cell to determine the
chlorine concentration in the pool water.
Follow the procedure below to replace the colorimetric module.
1. Turn off the water inlet and outlet from the flow cell and turn off the controller power.
2. Open the doors of both the analyzing module and the control module.
3. Locate the colorimetric cell unit in the analyzing sets.
Note: There are no
serviceable parts in the
colorimeter units.
Warning:
Attempting to open the
colorimeter unit will void
the warranty.
4. Disconnect the existing Colorimeter:
A.
B.
C.
D.
E.
If only the motor is to be replaced, the pump head will need to be removed and
Colorimeter Top
Cap
Colorimeter Unit
Solenoid Valve
Figure 20: Colorimetric Unit
Remove the top cap from the colorimetric unit.
Make sure not to touch the reagent injection needles in the cap.
Disconnect the outlet tube from the colorimetric unit.
Unscrew the union between the solenoid valve and the Colorimeter.
Unscrew the four (4) mounting screws that hold the Colorimeter to the HydroGuard
housing.
Open the control module door.
50
Colorimeter
Water Outlet
Mounting Screws