12.1.15 Hourtrend L; 12.1.16 Hourtrend Ll - GE Hydran 201 i Instruction Manual

• Priority: High
• Parameter(s) involved:
– HourTrAlr HH (alarm set point); Gas;HourlyTrend submenu; Section 4.5.2.2 on
page 4-16
– HourTrAlr Delay; Gas;HourlyTrend submenu; Section 4.5.2.2 on page 4-16
• Alarm cause(s): Hourly trend above the HourTrAlr HH alarm set point
Perform step 1 in Section 12.1.13 on page 12-8, and then steps 2 to 5 in Section 12.1.5 on
page 12-4.

12.1.15 HourTrend L

• Alarm type: Fail alarm
• Non-abbreviated description: Hourly trend Low
• Priority: Medium
• Parameter(s) involved:
– HourTrend L; SysOK Relay;FaultTrig. submenu; Section 4.5.7 on page 4-23
– HourTrAlr L (alarm set point); Gas;HourlyTrend submenu; Section 4.5.2.2 on
page 4-16
– HourTrAlr Delay; Gas;HourlyTrend submenu; Section 4.5.2.2 on page 4-16
• Alarm cause(s): Hourly trend below the HourTrAlr L alarm set point. Probably
indicates a gas level reading problem.
Proceed as follows:
1. Verify the hourly trend calculated by the Hydran 201Ti. This value is displayed in the
Main Display mode (see Section 4.2.2 on page 4-4) and also in the HourlyTrend
screen in the Gas;HourlyTrend submenu (see Section 4.5.2.2 on page 4-16). If this
value seems normal, verify whether the value of the alarm set point is adequate. This
parameter was probably set to a value that is too high.
2. Perform steps 2 to 5 in Section 12.1.7 on page 12-5.

12.1.16 HourTrend LL

• Alarm type: Fail alarm
• Non-abbreviated description: Hourly trend Low-Low
• Priority: High
Part 17997
Alarm Messages on the Hydran 201Ti's Display
Rev. 6, March 2011 12-9