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Home My WebLink AboutGLSD - Organics to Energy Project - Miscellaneous - 240 CHARLES STREET 8/1/2018 (9) \S ALARM PROCEDURES Alarm Overview: In the event that the gas conditioning system registers an alarm, the condition causing the alarm should be identified and corrected immediately. When an alarm does occur, the WARNING or FAULT light will illuminate on the gas conditioning system control panel door and the NewAlarms page will automatically appear in the page display area of the HMI, see Section 2. There are two types of alarms, shutdown alarms (SD) and run-time alarms (RT). If a SD alarm is registered, it will cause the FAULT light on the gas conditioning system control panel door to illuminate, and the system will shutdown. If a RT alarm is registered the WARNING light will illuminate, but the system will continue to run. The System Status Indicator on the Control page of the HMI will indicate if the system has registered any alarms. Each alarm has a general alarm parameter and an alarm component parameter. The general alarm parameter and the component parameter must be paired together to generate the complete alarm description. The general alarm parameter describes the condition of the alarm as high, low, or feedback, and the characteristics of the alarm as condensate, motor,temperature, or pressure. The alarm component parameter describes the specific device which generated the alarm, such as switch v LSH-951 [Unison LS 721] or transmitter TIT-951 [Unison TIT 331]. The general alarm parameter is identified by two titles, the alarm name and the alarm code. The alarm name is a unique name associated with each general alarm parameter, and the alarm code is a unique number between 1 and 99 associated with each general alarm parameter. Each alarm name Section 5 Alarm Procedures Page 1 G�. can be directly cross-referenced to the alarm code for the same alarm and vice-versa. The alarm component parameters is a device identifier comprised of 2 or 3 characters followed by 2 or 3 digits and is generated directly from the device identifiers found on the P+ID drawing in Section 7 and/or the 4E electrical drawings in Section 8. The alarm code and the device identifier number are combined and are posted in the code column of the new alarm or alarm history page. HMI Alarms: On the HMI, alarm indicators can be found on the Sys tern Control page, the NewAlarms , page, and the Alarm History pages. In addition to the alarm name, alarm code, and alarm component parameters described above, the HMI shows a time and date stamp for each alarm. These stamps indicate the time and date at which the given alarm occurred. For a complete description of these display pages, refer to Section 2. GODS DESCRIPTION COMPONEAIT TIME DATE s s y s# 10 Alarm list: The alarm list shows the alarm name, alarm code, and alarm component as described above, as well as the alarm component category, alarm type, alarm duration, alarm set point, and alarm description for every alarm used in the control logic of the gas conditioning system PLC. The alarm component category gives a generic title to each group of alarm components sharing common alarm type, alarm duration, and alarm set point parameters. The alarm type column indicates whether the system will shutdown (SD) or keep running (RT) when the alarm occurs. The alarm duration indicates the length of time that the alarm input device must be out of range before the alarm is registered. The alarm set point indicates the limit at which the switch or transmitter is considered out of range, and the alarm description contains a detailed description of the alarm. Resetting Alarms: To reset an alarm; touch the Reset icon on the New Alarms page,touch the Reset icon on the System Control page, or press the Reset pushbutton on the control panel door. After the alarm is reset, the New Alarms page will disappear revealing the previous page selected before the alarm occurred. The Reset icon will reset any alarm present in the gas conditioning system, even if the Section 5 Alarm Procedures Page 2 :o �z �e condition causing the alarm still exists. The New Alarms page can also be hidden without resetting the alarm. To hide the NewAlarms page, touch the Hide icon on the New Alarms page. TROUBLESHOOTING GUIDE Below you will find a troubleshooting guide for a typical gas conditioning system. Note that not all alarms may be found on all systems, and not all troubleshooting steps may be applicable. Only trained personnel should troubleshoot the gas conditioning system, and only trained electricians should perform any electrical troubleshooting steps. Before performing any of the checks listed below, please read the System Safety section of this manual, and review any applicable site specific safety programs to identify any potential hazards and take any necessary precautions. Please reference the System Manual Valve Listing, Alarm List, MD, individual component IOM's, and electrical drawings in Sections 1, 5, 7, and 8 of this manual for greater detail. Condensate Alarms: 1. Condensate High Level a. Check drain line strainer b. Verify proper valve position c. Check condensate level and test level switch d. Jog pump and solenoid valve to verify proper operation of both e. Check for loose connections at all control wire terminations f. Check fuses for solenoid valve, condensate pump motor, etc. g. Open cleanout (if provided) and clean drain filter 2. Condensate Full Level Timeout, a. Check drain line strainer b. Verify proper valve position c. Check condensate level and test level switch d. Jog pump and solenoid valve to verify proper operation of both e. Check for loose connections at all control wire terminations f. Check fuses for solenoid valve, condensate pump motor, etc. g. Open cleanout (if provided) and clean drain filter 3. Condensate Empty Level Timeout o a. Check drain line strainer b. Check condensate level and test level switch c. Jog pump and solenoid valve to verify proper operation of both Section 5 Alarm Procedures Page 3 � � � � . . . . d. Checkf r loose connections at all control w,?terminations y e. Check fuses for solenoid valve, condensate pump motor, etc. t Open deanout (if provided) and clean drain filter 1 y ƒ / / / \ \ \ \ \ : \ \ Page 4 Section 5 alarm Procedures Temperature Alarms: 1. Glycol Temperature High o a. Verify set point on the glycol chiller b. Verify correct temperature measurement with local temperature gauge c. Verify glycol flow through the system d. Verify if any alarms are present on the glycol chiller e. Verify glycol chiller condenser is free from dirt and debris f. Check for loose connections at all control wire terminations g. Verify glycol pressures match normal readings from the Daily Log h. Check the freeze point of the glycol solution 2. Glycol Temperature Low ° a. Verify set point on the glycol chiller b. Verify correct temperature measurement with local temperature gauge c. Verify if any alarms are present on the glycol chiller 3. Glycol Temperature Time Out a. Verify set point on the glycol chiller b. Verify correct temperature measurement with local temperature gauge c. Verify if any alarms are present on the glycol chiller d. Verify glycol chiller condenser is free from dirt and debris 4. Gas Supply Temperature High I a. Verify correct temperature measurement with local temperature gauge b. Check for loose connections at all control wire terminations 5. Blower Discharge Gas Temperature High a. Check oil level b. Verify belt tension (check for belt slippage) c. Change lubricants d. Check for loose connections at all control wire terminations 6. Dew Point Gas Temperature High a. Verify set point on the glycol chiller b. Verify correct temperature measurement with local temperature gauge c. Verify glycol flow through the system d. Verify if any alarms are present on the glycol chiller e. Verify glycol chiller condenser is free from dirt and debris f. Check for loose connections at all control wire terminations g. Verify glycol pressures match normal readings from the Daily Log h. Check the freeze point of the glycol solution Section 5 Alarm Procedures Page 5 �i tea' 7. Dew Point Gas Temperature Low a. Verify set point on the glycol chiller b. Verify correct temperature measurement with local temperature gauge, e. Verify if any alarms are present on the glycol chiller 8. Reheat Gas Temperature High a. Adjust (by opening) bypass valve to reduce reheat temperature b. Verify correct temperature measurement with local temperature gauge c. Verify if any alarms are present on the glycol chiller d. Confirm incoming gas temperature is within the specification e. Check for loose connections at all control wire terminations f. Check for external sources of heat acting on the system `> 9. Reheat Gas Temperature Low a, Adjust (by closing) by pass valve to increase reheat temperature b. Verify correct temperature measurement with local temperature gauge c. Increase operating pressure set point d. Verify set point on the glycol chiller e. Verify system piping/vessels are adequately thermally protected from ambient temperatures 10. Gas Delivery Gas Temperature High a. Adjust (by opening) bypass valve to decrease reheat temperature b. Verify correct temperature measurement with local temperature gauge � c. Check for external sources of heat acting on the system d. Check for loose connections at all control wire terminations 11. Gas Delivery Temperature Low a. Adjust (by closing) bypass valve to increase reheat temperature b. Verify correct temperature measurement with local temperature gauge c. Increase operating pressure set point d. Verify system piping/vessels are adequately thermally protected from ambient temperatures 12. Control Panel Temperature High a. Verify proper operation of control panel air conditioner b. Verify proper operation of control panel ventilation fan c. Clean exhaust/intake filter screens d. Check control panel thermostat e. Check for loose connections at all control wire terminations Section 5 Alarm Procedures Page 6 �i L, 13. Control Panel Temperature Low a. Verify proper operation of control panel heater b. Check control panel thermostat Pressure Alarms: 1. Gas Supply Pressure Low a. Ensure all gas supply valves are in fully open position b. Verify sufficient gas production c. Confirm calibration of device d. Check for loose connections at all control wire terminations 2. Gas Supply Pressure High a. Confirm calibration of device : b. Verify proper operation of any raw gas supply pressure regulators 3. Blower Inlet Gas Pressure Low a. Verify all blower isolation valves are in fully open position b. Verify differential pressure across moisture/particulate filters c. Verify sufficient gas supply pressure d. Confirm calibration of deviceIlk e. Check for loose connections at all control wire terminations � . 4. Blower Discharge Gas Pressure High a. Verify proper operation of recirculation modulating valve b. Ensure all valves are in normal operating position c. Confirm calibration of device 5. Gas Delivery Pressure Low a. Ensure all valves are in normal operating p g position ` b. Check for excessive venting or leaks in gas path c. Verifyrecirculation modulating valve operation, respective operating g p p p g position, and adjustment d. Confirm calibration of device e. Confirm VFD is responding appropriately ` f. Check for loose connections at all control wire terminations 6. Gas Delivery Pressure High. a. Ensure all valves are in normal operating position b. Verifyrecirculation modulating valve operation, respective operating g p p p g position, and adjustment ; c. Confirm calibration of device Section 5 Alarm Procedures Page 7 ; IBM 7. Pressure Time Out Alarm (system cannot build pressure) . a. Ensure all flanged connections are tight and there are no leaks in the system b. Ensure all valves are in normal operating position c. Check VFD enable fuse d. Verify recirculation modulating valve operation, respective operating position, and adjustment e. Confirm calibration of device f. Check for loose connections at all control wire terminations Other: � 1. VM Feedback Differential Warning a. Check for loose terminal connections in feedback circuit b. Check for grounded or open wires in feedback circuit , c. Verify recirculation modulating valve operation, respective operating position, and adjustment 2. Motor Circuit Shutdown Alarm (Please refer to electrical prints for circuit configuration & design) a. Check motor starter auxiliary contact b. Verify adequate ventilation to motor, allow motor to cool IN, , c. Check motor starter overload state and set point. Reset tripped overload, or adjust amp setting to 115% of circuit FLA NI d. Check control relay and base 3. VFD Alarm a. Reset the alarm on the control panel HMI if there was a recent power outage b. Verify Ethernet cable is connected and functioning correctly c. Reset fault at specific VFD d. Cycle power to VFD " 4. Device Feedback Alarm a. Check for loose connections at all wire terminations b. Replace relay/contact 5. Chiller Warning a. See Glycol Chiller Troubleshooting in the glycol chiller IOM included in Section 7 of this manual Section 5 Alarm Procedures Page 8 6. Device Out of Range (for device XX-XXX) ° a. Verify calibration of the device b. Check fuses to the device c. Check for loose connections at all wire terminations 7. "End Use Device" -No Usage (End Use Device means the equipment consuming the gas. This being a Gen-set, Boiler, Flare, etc,) a. Verify user adjustable alarm set status and timer matches the desired operational scheme, adjust as necessary using the HMI �� b. Check for loose connections at all wire terminations c. Replace relay/contact Section 5 Alarm Procedures Page 9