C1 Pro Max - KoolStone Rock Tumbler

Troubleshooting – C1 Pro Max Rock Tumbler

If your tumbler fails to operate correctly, check the following table. You can search for related questions using keywords in the search box on the right side, such as: barrel, belt, stop, slow, leak, shuts down, etc.

If you need assistance, please contact KoolStone Customer Service: support@ikoolstone.com.

No.	SYMPTOM	THINGS TO CHECK	SOLUTION
1	The unit was working, but suddenly stopped. The numbers will not light up, and the pulley won't turn.	i.Check that the adapter is well connected and working properly; ii. Check that the socket is energized; iii. Take off the barrel and repeat turn the machine on and off a few times to check if the problem persists.	If the problem persists, please contact our customer service.
2	After running for a period of time, it stops working and the light blinks, the barrel does not turn.	n/a	Please contact our customer service.
3	Automatically shuts down before the set time and cannot be turned back on after shutdown.	n/a	Please contact our customer service.
4	It shuts down automatically before the set time, and after shutting down, it can be rebooted and run, but it still shuts down automatically before the set time.	n/a	Please contact our customer service.
5	Missing parts	Confirm which part is missing	Please contact our customer service.
6	Barrel does not rotate	i. Remove the barrel and turn on the machine. a. Check if you can hear the motor running. If not, that means the motor has reached the end of its lifespan or is damaged; please contact our customer service to replace the motor. b. If you can hear the sound of the motor running, check if the belt is properly installed on both the small and large drive pulleys, and check if the pulleys are missing or damaged. c. If the large and small belt drive pulleys are intact, manually rotate them to check for any noticeable resistance that makes rotation difficult. If there is resistance, please record a video and contact our customer service for assistance. ii. If everything above is fine, place the barrel back on, turn on the machine, check if you can hear the sound of the belt rubbing against the pulley; if so, replace the belt. iii. Rotate the two rollers to see if there is any noticeable resistance; if there is, please contact our customer service for assistance. iv. Inspect the base for any signs of melting ( especially the bearing cover above the upper right corner of the screen.); if there are signs, please contact our customer service for assistance.	Please refer to Things to Check.
7	Barrel turns too slow.	i. Manually rotate the large and small belt drive pulleys to check for any noticeable resistance that makes rotation difficult. If there is resistance, please record a video and contact our customer service for assistance. ii. Check if you can hear the sound of the belt rubbing against the pulley; if so, replace the belt. iii. Rotate the two rollers to see if there is any noticeable resistance; if there is, please contact our customer service for assistance.	Please refer to Things to Check.
8	Keeps beeping periodically	n/a	Please contact customer service for assistance.
9	Broken or damaged case.	n/a	Please contact customer service for a replacement part.
10	Barrel leaks	i. Check if the hand-tightened knot is loose; ii. Check if the barrel lid is tightly screwed on and level with the barrel body, without significant tilting; iii. Check if the metal threaded column is loose; iv. Check if the metal cover or barrel is deformed.	i. Ensure that the hand-tightened knot is securely fastened to the barrel lid. ii. Make sure the barrel lid is securely fastened and positioned level to avoid leaks. iii. Ensure that the metal threaded column is securely fastened. If it is found to be loose, please contact customer service for a replacement. iv. Inspect the metal cover or barrel for any deformation. If it is found to be deformed, please contact customer service for a replacement.
11	How to apply lubricant to the belt	n/a	1. Choose a high-quality lubricant; 2. Clean the belt: Before applying lubricant, ensure the belt surface is clean and free from dirt, dust, or other impurities. 3. Spray or apply the lubricant on the inner surface of the belt (the side that contacts the pulley) to reduce friction. Make sure not to overapply, as excessive lubricant can affect the belt's normal operation. 4. Rotate the Belt: Manually rotate the belt a few times to allow the lubricant to evenly distribute across the entire surface. 5. Check for Smooth Operation: After lubrication, observe whether the belt runs smoothly and without unusual noises. 6. Regular Maintenance: Periodically check and lubricate the belt based on usage to ensure its long-term proper functioning.
12	The barrel lid is difficult to open.	n/a	Use the included Flat-Head Screwdrive to pry it off (see the video instruction).
13	Burning smell / Motor became detached from the frame and the shaft is loose and hanging inside.	n/a	Please contact our customer service.
14	Motor speed is way too fast	n/a	If the speed is too fast, you can continue to use speed 1 for grinding; speed 1 is already the lowest setting and cannot be lowered further. If you need a rock tumbler with a lower speed, you can contact our customer service.