One, no response after the boot
Power indicator does not light, the motor does not run. This failure should be in the power supply part. At this time, you should first check the fuse, and then check the other parts, such as the power cord, transformer and so on.
Example 1, a YB-LX-3 gynecological suction device, the manual switch and foot switch are connected to no response, the two switches at the same time the possibility of failure is unlikely to be considered. Check the fuse, power cord and transformer in turn. In the case of not turning on the power supply, and open the attractor power switch, use a multimeter to measure the resistance between the power plug L and N, such as infinity, indicating that the power supply circuit is not normal, because the power cord is connected to the transformer in the machine to the primary, and its resistance is about a few hundred ohms, in this case, the fault should be in the power cord or transformer. If you open the attractor panel, measure the transformer primary resistance to infinity, indicating that the primary disconnected.
Example 2, a JX820D first-aid attractor, after power on, no relay sound, indicator light, but the motor does not turn. Under normal circumstances, after the power on relay suction and can hear the suction sound, relay suction to the motor power supply, so that the motor running. Because the transformer secondary to the indicator and relay power supply, indicator light, indicating that the transformer secondary voltage is normal; no suction sound, indicating that the relay is not suction, the cause of the failure may be caused by the relay. Attractor power plug unplugged, will be disconnected from the manual switch and foot switch, measure the relay packet resistance to infinity, the relay failure, replace the relay, the attractor is normal.
Second, the motor runs after the boot, but the negative pressure gauge indicates zero
This fault is mostly caused by the machine rubber tube off, due to the aging of the rubber tube and make the joints loose, when encountering vibration is easy to fall off.
such as a YB-DX23D-type attractor, boot motor operation, but the negative pressure gauge indicates zero, after checking the outside of the machine hose connection is normal, open the panel, found that the negative pressure gauge hose off the machine, after replacing, the negative pressure is normal.
Three, negative pressure does not meet the requirements
The reason is due to the attraction of long-term use, prone to aging rupture of the rubber tube, the pump body oil cover lack of oil, the pump body oil cover fixing screws loose.
such as a suction device, after the start, the minimum negative pressure of 0.05MPa, check the outside of the machine hose no aging rupture, open the panel, found that the machine hose aging, joints loose, replace the new hose, suction device normal.
Again, such as attractor, after the boot, negative pressure is only 0.06MPa, after checking the machine inside and outside the hose without rupture, loose phenomenon, attract the pump oil cover oil, refueling to the normal line, negative pressure is still unchanged; for further inspection, remove the casing, found that the oil cover below the oil, suspected of oil cover fixing the sealing of the bad cause, after checking the oil cover fixing screws are loosening the screws, tighten the screws, the negative pressure is normal. The negative pressure is normal.