12.1.12 Gas Ll; 12.1.13 Hourtrend H; 12.1.14 Hourtrend Hh - GE Hydran 201 i Instruction Manual

Chapter 12 • Troubleshooting

12.1.12 Gas LL

• Alarm type: Fail alarm
• Non-abbreviated description: Gas level Low-Low
• Priority: Medium
• Parameter(s) involved:
– Gas LL; SysOK Relay;FaultTrig. submenu; Section 4.5.7 on page 4-23
– GasAlr LL (alarm set point); Gas;GasLevel submenu; Section 4.5.2.1 on page 4-16
– GasAlr Delay; Gas;GasLevel submenu; Section 4.5.2.1 on page 4-16
• Alarm cause(s): Gas level below the GasAlr LL alarm set point. Probably indicates a
gas level reading problem.
Perform steps 2 to 5 in Section 12.1.7 on page 12-5.

12.1.13 HourTrend H

• Alarm type: Gas alarm
• Non-abbreviated description: Hourly trend High
• Priority: Medium
• Parameter(s) involved:
– HourTrAlr H (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 H alarm set point
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 is probably set to a value that is too low.
2. Perform steps 2 to 5 in Section 12.1.5 on page 12-4.

12.1.14 HourTrend HH

• Alarm type: Gas alarm
• Non-abbreviated description: Hourly trend High-High
12-8 Rev. 6, March 2011 Part 17997