Hakko Air Pumps have a Safety Switch which is designed to turn off the motor if the rubber diaphragms wear out. The rubber diaphragms are attached to the magnet which vibrates back and forth. If the diaphragm wears out the magnet will start to vibrate excessively. You will hear the pump making a lot of noise. The safety switch senses the excess vibration and turns the motor off to prevent damaging the motor. Sometimes during shipping the pump will get bumped too hard and the safety switch will turn off. If your pump does not turn on brand new right from the box this may be what happened. You can reset the switch very easily. If your pump has been running with bad diaphragms for long periods the switch may shut off and you will have to turn it back on after you replace your diaphragms. The switch is easy to reset.
Please open pdf file for instructions on resetting your safety switch.
Koi & Pond Tip of the Day July 3rd, 2008
If you live in area with drastic temperature changes, be sure to build your pond deep. Deeper ponds will have more stable water temperatures. The temperature in shallow ponds can fluctuate radically in spring. These fluctuations can make it difficult for beneficial bacteria to colonize.
