VSM100 SHALE SHAKER TROUBLESHOOTING

VSM100 Shale Shaker is well proven to meet the demands of the oilfield drilling industry and is purpose built to provide a more efficient primary solids removal system. The VSM100 Shale Shaker is designed on a modular basis thus enabling multi unit installations and flexible configurations to be achieved using standard equipment.

Here is VSM100linear motion shale shaker

Symptom:	Probable Cause:	Remedial Action:
Electrical:
Both motors fail to rotate	Main supply down	Check isolator; Check supply; Check fuses.
One motor fails to rotate	Thermal overload setting	Reset overload to correct setting
One motor fails after start-up	Fuses blown	Check fuses
One motor fails after start-up	Electric motor faulty	Change electric motor
Mechanical
Both drive shafts fail to rotate	Bearing failure	Replace bearings
	Broken belts	Replace belts
	Slack belts	Re-tension belts
One drive shaft fails to rotate	Bearing failure	Replace bearings
	Broken belts	Replace belts
	Slack belts	Re-tension belts
	Damage to outrigger assembly	Check assy. Replace if necessary
Bearing failure	Wrong grease	Use recommended grease
	Grease system/seal failure	Check grease passage
	Vent hole in head blocked	Ensure hole in head is clear
Belt failure	Wrong tension	Check belt tension
	Belt wear	Check pulley alignment
	Incorrect speed	Check pulley size
Pneumatic clamping failure	Incorrect pressure	Check air supply and pressure pressure is correct (80-90 psi)
	Incorrectly fitted screens	Check screens are properly located
	Incorrectly fitted wedge frames	Check wedge frames are properly located
Solid transportation limited	Shaft rotation	Check shaft rotation
	Belt damaged	Check tension
	Damaged screen	Replace shale shaker screen
	Angle of basket	Operate unit in horizontal position only.
Solid transportation limited	Hook strip screen tension	Check tension of hook strip bolts (35 - 40 ft. lb)
Solid transportation limited	Spray bars off (WBM)	Use spray bars
Short screen life	Too fine screen	Too fine screen Change to coarser mesh
	Premature damage	Check storage and handling
	Angle of basket	Check basket is operated in horizontal position
	Inadequate washdown facilities	High pressure clean with appropriate fluid.
	Incorrect fluid level	Adjust to 10 - 15” beach OBM
	Spray bars off (WBM)	Adjust to 6 - 8” beach WBM
Excessive noise	Loose bolts	Check torques on all bolted assys.
	Pneumatic clamping system	Check pressure
	Screen wedge frames	Locate properly
	Incorrect tension of hook strip	Check torque (35 - 40 ft. lb) on scalping screens
	Bearing failure	Replace bearings
	Noisy seals	Grease seals
Unusual vibrations	Weakened mounting spring	Change mounting spring
Unusual vibrations	Incorrect shaft rotation	Check belt tension
Additional Recommendations for Water Based Drilling Fluids
Symptom	Remedial Action
Lack of bottom screen transportation	Fit finer primary screens and ensure beach length is 6 - 8”
	Rotate screens allowing one set to be used as a back-up.
	Clean back-up screens from rear with high pressure wash gun.
	Ensure adequate washdown facilities are available
	High pressure wash gun
	Install spray bar system (Contact Thule Rigtech)
Lack of top screen Remove front gate in distribution chute and allow fluid to wash transportation	Remove front gate in distribution chute and allow fluid to wash over onto screen; Check screen tension (Recommended 35 - 40 ft. lb)

Aipu solids control can provide VSM100 spare parts and replacement screen: sculping deck screen, primary screen and secondary screen.

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