Hach SC4500 Manuel D'utilisation De Base page 23

8.2 Unlock the controller cover
Some outdoor conditions can cause a blockage in the controller cover. If necessary, use a flat
screwdriver to push at the hinge groove and unlock the controller cover. Refer to
Figure 13 Unlock the controller cover
8.3 Fuse replacement
Fuses are not user-serviceable items. The need for fuse replacement in controllers indicates severe
technical failure and is therefore considered to be a service activity. If a blown fuse is suspected,
contact Technical Support.
8.4 Battery replacement
The lithium ion backup battery is not user replaceable. Contact technical support for replacement.
Section 9 Troubleshooting
Problem
Controller will not
power up, or powers
up intermittently.
The controller shows
a sensor warning or
error.
Possible cause
Power is not supplied
to the controller.
A warning message is
reported by the
sensor.
There is an invalid
measurement due to a
sensor error.
Solution
Make sure that the power cable is connected to the
controller.
Make sure that the power connections are properly
terminated in the controller.
Make sure the power strip, line power, wall plug are
all properly plugged in.
Contact technical support
Refer to the sensor warning description shown in
the device detail screen and to the sensor user
manual.
Refer to the sensor warning description shown in
the device detail screen and to the sensor user
manual.
Figure 13.
English 23