Are you having high scrubber faults? Follow this help guide to solve your issue.

Follow the link for more information on the Wellmark Level Controller : Wellmark Level Controller W1200 DVO.pdf

Step 1: First you want to check the true level of the scrubber by opening the level control switch located on the inlet suction vessel. Verify that the switch is in the down position causing the high scrubber fault.

Is the switch in the down position or the up position? If its in the down position continue to step 2. If it is in the up position continue reading.

If the switch is in the up position when checking there are a few possibilities. First the system could have dumped during the time it was faulted. This means you need to make some adjustments to your dump delays, allowing the system to dump at a different rate. Second you want to verify that the switch is not sending a false alarm. Ensure the screws are tight in the switch and not allowing the switch to send a false alarm. If the switch is sending a false alarm check inside the LOGIX panel for loose wiring. The wire number can be found in the diagnostic page.

Step 2: Check the position of the motor valves for the automatic dump system. The system works automatically, fluid will build up in the blow case causing the float to rise and activate the DVO. If adjusted correctly, once the DVO activates bottom motor valve opens and the top closes, discharge pressure will enter the blow case allowing fluid to be pushed down the dump line while the top motor valve closes not allowing discharge pressure to enter the top section of the scrubber vessel. So during normal operation the top motor valve will be open and the bottom motor valve will be closed. If motor valves are not working correctly, check the delays for proper setting. Check delays by turning the delays out and checking for any trapped pressure or fluid in the supply lines to the motor valves will cause operational issues.

Step 3: If the motor valves are still not working properly the next step is to verify the supply gas regulator is working and supplying gas to the system. After verifying the supply gas is working the next step is to check the orifice setting inside of the level controller.

Step 4: To properly adjust the auto dump system the suction scrubber needs to be empty, allowing you to know the true level of the vessel. First you will need to remove the cap of the level controller. At the bottom of the stem is an adjustable orifice. After verifying the scrubber is completely empty you will need to turn the adjustable orifice all the way to the right. The system should start dumping when the orifice is released from the seat. Once the system starts to dump turn the adjustable screw the opposite way until the system reliefs. After the system reliefs test the function by manually moving the float indicator to the flat position. When the float is in the flat position the system will start to dump until the float is released into an angled position indicating that the float is down with no fluid.

Step 5:  If your float indicator is straight and has no adjustment then further diagnosis will be needed. You will need to remove the whole assembly to check for missing pins or if the float may have fell off completely. This will require to depressurize and apply the LOTO procedure.

Step 6: If none of the above allows the dump system to work properly replacing the DVO (Wellmark pilot assembly) would be the next step. After blowing down unit and following the correct procedures you can remove and replace the DVO. The stem will be re-usable when doing this, but you will need to make the proper adjustments as listed above in the previous steps.

Step 7: Ensure the pressure going to the blow case is enough to send the fluid down the line. By locating where the system is dumping to it will tell you how much pressure you are needing to push the fluid down the line. There is a pressure regulator on the discharge line allowing you to increase the pressure to the blow case.

If issues continue after using this diagnostic sheet, contact your area lead for further instruction.

Responsibilities

Management - Management is responsible for implementing, supporting, and enforcing the requirements of this procedure to their respective locations/area.

EHSS - Responsible to assist in the implementation of this procedure and to review for effectiveness.

Employees, Contractors, Vendors, ETC. - Are responsible to follow the following requirements outlined in this procedure and ask for assistance

Scope

Hazards

Employees should be aware that units could contain flammable and toxic gasses.  Potential for the possible hazards of gas ignition or fire, hot surfaces & fluids, rotating equipment.  Risk of possible concentration of H2S.  Hazardous gases could be in the units pressure vessels, cooler, or associated piping and risk of inhalation of hazardous gas fumes.  Environmental spill of compressor oil and possible production fluids 

Safety

All Personal Protective Equipment (PPE) for normal Field Mechanical duties apply for this procedure.  Four Gas Monitor, which is outlined in the Flogistix EHSS Manual, PPE Section 8, Procedure 8.3 This procedure applies to all units in service in the field, at a service shop, or in any storage yard.

Insure Flogistix personnel have proper safety certification as required by the Flogistix Customer.

Insure Flogistix personnel adhere to all Customers safety practices.

Proper use of required tools 

Spills and Disposal

All spills shall be handled immediately according to MSDS recommendations and the employee's level of training

Flogistix Service Technicians performing this task will properly dispose of any waste liquids or solids.  Disposal of any fluids or solid waste will be disposed of properly according to Flogistix policy.  Disposal of any fluids will be done at an approved or designed waste location.  Disposal of solid waste from a compressor shaft seal change such as, oily rags, ETC, will be disposed of according to the local regulations regarding the disposal of oil soaked rags.   

Training

All employees shall be initially trained on the following topics:

§   Employee Personal Protective Equipment (PPE)

§   Lock Out Tag Out (LOTO) procedure according to Flogistix policy

§   MSDS Online System

§   Emergency and First Aid procedures

§   Methods and Observations that may be used to detect the presence or release of a hazardous chemicals or gas in the work place

Tools & Equipment Required

All employees performing Preventative Maintenance shall be required to have the listed tools to perform job tasks:

§   All required PPE according to Flogistix Safety Policy

§   Lock Out Tag Out LOTO items to properly perform LOTO procedure according to Flogistix policy

§   Basic Hand Tools

Approvals

Field Service approved by:

Date:

Engineering approved by:

Date:

EHSS approved by:

Date: