As the purity of hydrogen, flow and pressure on the normal operation of the chromatograph is very large, so the hydrogen generator failure should be promptly ruled out. Here are eight common faults.
1, the circuit is not connected; (2) hydrogen switching power supply damage; (3) in the pressure of 0 no-load operation when the electrolytic cell burned. Check the method: (1) check the circuit; (2) with a multimeter to measure the electrolytic cell voltage is about 2.3V. Remedy: (1) repair power; (2) replace the damaged hydrogen switching power supply; (3) replace the electrolytic cell.
Second, the hydrogen production can not reach the predetermined pressure, the number of hydrogen show at 500ml / min or more, that is, the instrument shows the amount of the actual use of larger. Failure reasons: (1) gas system leak; (2) filter or filter cover is not tightened; (3) hydrogen electrolytic cell leakage. Check the method: with the leak detection of gas connections. Exclusion method: (1) replace the leaky components; (2) tighten the leak point; (3) contact the manufacturer to replace the electrolytic cell.
Third, the hydrogen production exceeds the expected pressure of 0.1MPa Failure reasons: (1) automatic tracking device blocker dislocation or fall off; (2) photoelectric coupling damage. Check the method: (1) visual; (2) with a multimeter to measure the circuit. (1) When the pressure on the front panel reaches 0.3MPa, turn off the power, install the light-blocking board in a reasonable position, turn on the power switch and gently press the light-blocking plate; (2) replace the damaged photoelectric coupling element.
Four, the generator can start but the hydrogen display of the digital display is 0 or black. Cause: The digital display is damaged. Inspection method: Measure the circuit with a multimeter. Remedy: Replace the digital display.
5, after the boot, hydrogen production capacity of less than 300ml / min or take a long time to reach. Failure reasons: (1) electrolyte failure; (2) switch is not tight, there is leakage phenomenon. Check the method: (1) observe the electrolyte level is below the lower limit or electrolyte use more than six months; (2) leak test. Exclusion method: (1) Timely addition of secondary distilled water or deionized water. Or the new configuration of the cooling electrolyte (mother liquor) into the storage tank, and then add the secondary distilled water or deionized water, the water level in the water line between the lower limit (potassium hydroxide solution concentration of about 10%), Screw on the cover, 10min after use; (2) continue to tighten the switch, the instrument pressure and flow standards.
Six, after the use of power, hydrogen production can not be stable, has been a small range of fluctuations. Failure cause: electrolyte failure. Check the method: observe the electrolyte level is below the lower limit or electrolyte used more than six months. Remedy: The new configuration l0% potassium hydroxide electrolyte to replace or add water.
7, after the boot, the amount of hydrogen production from tens of ml / min slow growth, the pressure can not reach 5kg time to 0.3MPa. Cause: electrolytic cell leak. Inspection method: visual inspection. (3) can not repair the mechanical damage, to replace the electrolytic cell. (2) sealed with a flat seal adhesive; (3) can not repair the mechanical damage, to replace the electrolytic cell.
Eight, the instrument corrosion can not be used seriously. Cause: (1) the electrolyte does not remove the electrolyte with a suction ear ball; (2) did not screw the inner cover and the outer cover, so that the residual electrolyte spilled during transport. Inspection method: visual inspection. Remedy: Replace the instrument.