Pole pump failure and solution

Plane diagram of advection pump

1 - pump inlet connector, connected to the inlet and pump head
2 - check valve, a total of two, the liquid can only be a one-way through, pay attention to the installation direction, with arrows indicating flow direction
3 - one-way valve seat, a total of two, for the installation of one-way valve
4 - U-shaped tube for connecting the main pump head to the auxiliary pump head
5 - Pump head fixing screw for fixing the pump head
6 - flow path connector, connected to the pressure buffer inlet
7 - flow path connector, connected to the pressure buffer outlet
8 - Empty valve switch knob, clockwise rotation tight, counterclockwise rotation to open
9 - drain valve and pressure sensor
10 - flow joints, and six-way injection valve connected to the mouth of No. 2
11 - flow joints, waste discharge
Plane diagram of advection pump


1 A pump
1 After each analysis, rinse the pump head with ultrapure water. It is recommended to open the valve, the flow rate of 2ml / min, through the ultra-pure water, rinse for 10 minutes.
2 summer more than a week without the use of equipment, the pump head and into the water pipe into the alcohol preservation. It is recommended to open the discharge valve, the flow rate of 2ml / min, alcohol, rinse for 10 minutes, and then off the drain valve, the water pipe filter in the alcohol to save. Note that alcohol can not enter the column and suppressor.
3 winter room temperature below 0 degrees Celsius, the pump by 2 method into the alcohol preservation. Note that alcohol can not enter the column and suppressor.
4 eluent must be 0.22μm microporous membrane filter, or easy to pollution check valve.
B check valve.
Figure 1 dashed box that is the installation of one-way valve parts, first U-tube and pump inlet pipe removed, after the wrench to remove the upper and lower one-way valve seat, you can see the one-way valve, with clean tweezers will be one-way Remove the valve into a 50ml clean beaker, pour about 30ml of anhydrous ethanol, placed in an ultrasonic cleaner for 30 minutes.
Note: the check valve marked with small arrows (see Figure 2), the arrow direction is the direction of the flow, the installation should be installed in the correct direction
1. Phenomenon: After the advection pump is connected to the power supply, the rear power switch indicator does not light.
Possible cause: The fuse inside the advection pump power supply is broken.
Workaround: Replace the fuse
2. Phenomenon: After the pump is started, the inside of the pump head can not feel the vibration by hand touch.
Possible cause: The inside of the pump head is broken.
Solution: need to replace the precious stones recommended to contact manufacturers.
3. Phenomenon: start the pump, open the exhaust valve, the exhaust valve without liquid out.
Possible reasons: (1) the inlet filter is not inserted into the liquid
(2) The liquid is not filled with liquid
(3) Check valve is blocked by dirty things
Solution: (1) Insert the filter head into the bottom of the liquid
(2) unscrew the inlet tube, with the suction ear ball into the pump suction, so that the liquid tube filled with liquid.
(3) hold the pump head, the pump head up and down the two screws screwed out, remove the single-phase valve, into the ethanol, soak 1 to 2 hours, remove the first with the suction ear ball blowing, and then ultra-pure water Cleaning, single-phase valve can only blow in one direction, as it is loaded into the pump head, rinse with deionized water.
4. Phenomenon: After the pump is started, the two white tubes in the upper part of the pump head flow out.
Possible cause: The aging of the seal inside the pump head leads to a decrease in sealing
The solution: the need to replace the seal plug manufacturers and manufacturers.