Hach-Lange POLYMETRON 9523 User Manual - Manual (Page 34)

6. Set the sample flow to the required rate (between 5 and 20 L/h).
7. Reset the resin options. Refer to
Resin option on page 28.
Figure 11 Resin replacement
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.
Battery replacement
The lithium ion backup battery is not user replaceable. Contact Technical Support for replacement.
Troubleshooting
Test and maintenance menu
1. Push the menu key and select TEST/MAINT.
Option Description
SCAN DEVICES Performs a scan for active and missing devices.
OUTPUT CAL
• OUTPUT 1
• OUTPUT 2
Lets the user calibrate the 4–20 mA outputs with a 250 ohm resistor in series to
the mA output terminals. The settings for each output are adjusted until the
correct value (4 mA or 20 mA) is supplied.
CAL 4 mA output (Min: 0 Max: 25000)
CAL 20 mA output (Min: 35000 Max: 65533)
32 English