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1. Access Service > Sensor Test > H2 Sensor Test and press Enter.
2. Press Ok to start the test.
3. Wait for a few seconds; the Hydran M2-X's display should indicate the
message Good. If another message is displayed, see Section 8.1.
4.2.5 Verifying the Battery Voltage
1. Access Service > View Service Data.
2. Read the value of the parameter Battery. The value must exceed 2.85 V. If
not, contact the General Electric Customer Service (the coordinates can be
found at the bottom of page 9).
4.2.6 Verifying the Alarm Relays (If Used)
The steps described in this Section may be used during the Hydran M2-X
verification, maintenance and troubleshooting procedures.
Note: To verify the relays using the alarm contacts, connect an ohmmeter to the alarm
contacts terminal block (15 terminals). To identify each terminal, see Section D-8.
1. Access Test > Relay Test.
2. Simulate an alarm by setting parameter Relay #1 Mode to Force On. Make
sure:
• The NO contact of this relay is closed.
• The NC contact of this relay is open.
• The state of the other alarm contacts has not changed.
3. Perform the same test for relays #2, #3 and #4.
4. Simulate an alarm due to system fault conditions by setting parameter SysOK
Relay Mode to Force Off. Make sure:
• The NO contact of the system fault relay is open.
• The NC contact the system fault relay is closed.
5. Cancel the alarm due to system fault conditions by setting parameter SysOK
Relay Mode to Normal. Make sure:
• The NO contact of the system fault relay is closed.
• The NC contact of the system fault relay is open.
6. Cancel the other alarms by setting parameters Relay #1 Mode to Relay #4
Mode to Normal. Make sure:
• The NO contacts of relays #1 to #4 are open.
• The NC contacts of relays #1 to #4 are closed.
• The NO contact of the system fault relay is closed.
• The NC contact of the system fault relay is still open.
Page 70
Hydran* M2-X Instruction Manual
MA-029
Rev. 1.0, 30-Jul-18
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