Magnetic Wash Station Oil and Wash Solenoid Valve Removal and Replacement

Parts and Materials Required

• Proper PPE

• Hex wrench, 3 mm
• Tape for labels
• MAGWASH, WASH SOLENOID VALVES

Time Required

• 1–2 hours

Removal Procedure

1. Put on proper PPE.

2. Remove the Magnetic Wash module.

   Wear clean nitrile gloves while performing the following procedures.

3. Place the module on a properly protected work surface.

   

4. Label the injector lines so they can be re-installed in the correct order. The wash solenoid valve bank is located on the top of the assembly and the oil solenoid bank is on the bottom.

   

5. Insert an empty MTUMulti-tube unit—Container used to process tests in the instrument. An MTU contains five separate reaction tubes. The MTU is moved through the instrument by the linear distributor and includes five tiplets for pipettiing to be used in the mag wash station. under the injectors to collect the oil or wash that will leak out when the injector lines are disconnected.

   

6. Disconnect the solenoid valve connector by squeezing the two latches located on either side of the connector and pulling. The top connector is for the wash assembly and the lower connector is for the oil assembly.

   

7. Unscrew and remove the labeled injector lines from the solenoid valve.

   

8. Using a 3 mm hex wrench, remove the two 4 mm hex head screws that secure the solenoid valve to the Magnetic Wash frame.

   

9. Remove the valve assembly.

   

Replacement Procedure

Wear clean nitrile gloves while performing the following procedures.

1. Reverse the removal procedure.
2. Be sure that the valve assembly is installed in the proper orientation. The Oil 1 or Wash 1 outlet should be at the top of the assembly when installed correctly.
3. Check to ensure that the injector lines are installed to the correct solenoid valve outlets.
4. Remove the MTU that was stationed under the injectors to capture wash or oil leaking out of the injector lines. There will be a substantial quantity of fluid in the MTU and it should be disposed of properly.

   

5. Replace the Magnetic Wash module.

Alignment/Calibration

1. Align the Distributor to the Magnetic Wash modules.

Verification

1. Perform a Visual Dispense Verification Procedure.
2. Check for oil and wash fluid leaks at all connections.
3. Perform the Magnetic Wash Dispense and Process Control Verification procedure.
4. Perform a System Level Operational Qualification.
5. PrimeOperation of pumping fluid through tubing to ensure proper and consistent fluid delivery (remove air from the tubing, etc.). the system (see the Panther System Operator's Manual).