Check power voltage to see if normal before turn the motor on.
Check all the bolts are properly tighten before turn the motor on.
Check all the shaker screen are properly secure with wedge block.
Check if  there is any foreign objects on the shale shaker.
When the cleaner operate at normal condition , there should be minimum  noise and  the operation should be smooth and steady, if there is any unusual noise, stop and check the equipment immediately.
If the connection cable between vibration motor and the control panel has been changed because of maintenance or changing motor, the cleaner will not  work effectively. It needs take off the shield at the end of the vibration motor, connect the power and observe whether the rotation directions of the two vibration motors are opposite direction. If not, then it needs adjust to be opposite direction.
When change the vibration motor, adjust the rotate  blocks on the two vibration motors to be consistent.
After tighten the bolts of vibration motor, have a check every 8 hours, if there is any loosen, tighten it.
When the vibration used for about 500 hours, inject some of specific lubricant grease(about 80g).
The control switch is explosion-proof, do not open if not necessary. If need to check for issue,  it needs turn off the power first. When check the equipment for possible issue, do not be neglected details or wrong installed, to guarantee the explosion-proof.
The wedge of shaker screen should be checked each 8 hour, if there is any issue of loosen, tighten it on time.
With compact the shaker screen, the tension force of each bolt is 5KN.
When the cleaner is used for 1000 hours, some lubricating grease should be injected into the grease box.
If the springs damaged, change the springs as soon as possible. When changing the springs, the screen box should be raised, and put the springs on the spring bases, then ease-down the screen box.

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Recently, one of GN Solids America Singapore customer came to GN to inspect the mud system with a dosing system to flocculate small solids into larger ones for treatment in solids control. And in last essay, the whole system is generally introduced, and also GN solids America is introduced. In this essay, I will introduce the dosing system which plays an important role in this Drilling Waste Management, without which it may fail to separate solids in the use mud strictly in compliance with the customer’s requirements.

Dosing is define as the below in Wikipadia. Generally, dosing means to feed chemical or medicines into a process fluid in small quantity, or to living being at intervals , or to atmosphere at intervals to give sufficient time for the chemical or medicine to react or show the results. For this system, the first feeding to fluid is adopted, and show the final result of small solids being flocculated larger ones for easy separates.

The whole dosing system is divided into 2 tanks(www.watertanks.com). The flocculant in them is fed into the decanter centrifuge through a screw pump in turn, at the same time ,the mud after processed by desander is fed into the decanter centrifuge through the other screw pump. With the flocculant, the ultro fine solids become larger ones which are more easily to be separated out. This dosing system is totally automatic controlled. Once the required concentration is set by man, the dosing system will works with the automatic controlled chemical feeding and water feeding. After the one tank is filled, the valve will be closed automatic, and then the other tank will open.

With this dosing system, ultra fine solids will be consolidated larger ones, which can be removed out from the mud through a GN decanter centrifuge.