GE Hydran 201i - Replacing the Battery; Resetting the Clock

MA-033 Rev. 14.0, 12-Nov-18
Hydran* 201i Instruction Manual
Page 40
10. If required, reinstall the keypad flat cable into its connector J2.
11. Reinstall the cover back in place.
12. Reinstall the CPU module back into place.
3.7.4 Replacing the Battery
The battery is used to keep the real-time clock functioning when the Hydran 201Ti
unit is not powered. Every five (5) years, it is recommended to replace the Lithium
battery used in the unit.
For the Hydran 201Ti, the set points for the battery alarms are adjusted to provide
warning lead times of nine months (Low Alarm = 2.75V) and three months (Low-Low
Alarm = 2.45V) when operating at 60˚C (140˚F). See Service; Battery submenu in Section
5.5.4.3.
Note: When the battery becomes too weak, an alarm message will be displayed and
broadcast. In this case, the battery has to be replaced as soon as possible.
The replacement of the battery must be executed by trained
service personnel only.
To replace the battery, proceed as follows:
1. Power off the H201Ti.
2. Disconnect the H201Ti’s power supply at the external switch or circuit
breaker.
3. Remove the cover of the H201Ti unit.
4. Remove the two screws holding the CPU module (see item 4 of Figure 3-2).
5. Pull out the CPU module with care from the H201Ti.
6. Remove the three remaining screws.
7. Carefully lift off the cover of the CPU module.
8. Remove the battery from its holder.
9. Install the new battery in the battery holder.
10. If required, reinstall the keypad flat cable into its connector J2.
11. Reinstall the cover back in place.
12. Reinstall the CPU module back into place.
3.7.5 Resetting the Clock
To reset the date and time, proceed as follows:
1. Reconnect the H201Ti’s power supply.
2. Power on the H201Ti. The H201Ti executes the self-test sequence as
described in Section 5.2.5.
3. When requested, use the H201Ti’s keypad to enter the Date and Time.
CAUTION