Sometimes, clients or users may contact GN Solids Control to ask for assistance on GN equipment operation.

Recently, a client show own GN Solids Control decanter centrifuge at their rigs sites contact GN and ask GN to help with some technical assistance. The VFD decanter centrifuge is used at their drilling mud solids control system. They said it is related to a small issue on GNLW363CG-VFD Decanter Centrifuge. They said their issue is that the set RPM Bowl speed is reached very slow, about 3 – 5 minutes to reach high speed RPM.

They want to know is that normal to take such time to achieve the set high speed? They want to know what is the reason to cause the slow speed-up? Is it caused by some safety settings? They also want to know is there any way to improve the VFD response?

GN Solids Control gave reply to the client that, the pre-setting of GN Solids Control on VFD control panel is 5 minutes to reach 3200rpm. The slow speed-up is to avoid trip off during running. In this case, it should take around 3 minutes to reach 2000RPM. If the time is too long, it is abnormal. The parameter can be set on the VFD drives. If clients want more assistance on the VFD drive parameters settings, they can send photos of the decanter centrifuge VFD panel nameplate. GN Solids Control will check the original parameter settings before delivery from GN Solids Control factory, and give clients instruction about how to process.

The clients give their thanks to GN Solids Control about the the prompt answer. They accept the time. They said all fine if everything is made to protect the system from overloading. They are just a little bit worry not to be some safe limitation caused by a failure or so.

Besides decanter centrifuge, GN Solids Control also make shale shaker, mud cleaner, desander, desilter, jet mud mixer, vertical cuttings dryer, etc…

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